JP3116803B2 - Extra length cutting device for band clamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band clamp extra length cutting device.

[0002]

2. Description of the Related Art In general, a band clamp is composed of a band portion wound around a linear soft body such as a wire bundle such as a wire harness or a subassembly constituting the wire harness, and the linear soft body via a band portion. It is a resin molded product integrally having a clamp portion for attaching an object to the main body device.

[0003] The band portion is formed in a band shape extending from the back surface of the clamp portion and capable of forming a loop for binding a soft object, and a locking tooth is formed in a portion which becomes an outer peripheral surface of the loop. ing. In addition, an insertion portion having a detent pawl for retaining the locking tooth is provided on the back surface of the clamp portion. The detent pawl allows the band portion to be displaced in the direction in which the insertion portion is inserted, and in the reverse direction, locks with the locking teeth to prevent the band portion from being displaced. Then, it is introduced into the insertion portion through which the band portion forming the loop is inserted, and the linear soft object is tightened in the loop, and the hand portion introduced into the insertion portion is moved in the anti-introduction direction by the fixing claw. It is configured to lock to the locking teeth so as not to come off.

When the band clamp is mounted on the linear soft object, the band portion is manually wound around the outer periphery of the linear soft object, and after passing through the insertion portion, the band is clamped by a tool such as a nipper. The extra length of the band portion that passed through the insertion portion was cut.

[0005]

In the above-described method of mounting the band clamp, since the operator exclusively cuts off the extra length of the band portion by a complete manual operation, after tightening work, the tool is changed by holding the tool. Work had to be performed, and workability was poor. In addition, when the cutting operation is performed manually, there is a large variation in the cutting dimension of the extra length portion, and it has been difficult to precisely control the length of the hand portion protruding from the insertion portion.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a band clamp extra length cutting apparatus which has good workability and can be finished to a fine cutting dimension.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a band portion capable of forming a loop for winding a linear soft object, and the linear soft object via a band portion. A band clamp provided on the back surface of the clamp unit for attaching the band unit to the main body device, and a band clamp integrally having an insertion portion for inserting the band unit only in the direction of tightening the loop of the band unit. a surplus length portion cutting apparatus of band clamp for use in mounting at the object, the fabric
The band , which is fixed to the upper end of the erected portion that is erected on the wire plate and is wound around a linear soft body, can be inserted through the insertion portion.
A holding portion for holding the clamp portion of the band clamp, and positioning means formed integrally with the holding portion and positioning the extra length of the band portion through which the insertion portion is inserted so as to be cuttable and defining a cutting margin of the extra length portion. Cutting means attached to the holding portion so as to be relatively displaceable and cutting the extra length portion of the band portion that has been positioned; and evacuation allowing the extra length portion of the band portion to be positioned by the positioning means. An apparatus for cutting an excess length portion of a band clamp, comprising an operation means for displacing the cutting means in a posture and a cutting posture for cutting the positioned extra length portion.

According to the present invention, the cutting means is set in the retracted position in advance, and the extra length of the band clamp in which the clamp is held by the holding portion is positioned so as to be cut by the positioning means, and the cutting means is operated. By displacing to the cutting posture by means, the cutting margin of the extra length portion,
It will be cut in a state where it is precisely positioned. In many cases, the band portion of the band clamp is first wound around a linear soft object with the clamp portion held by the holding portion, and then fixed to the linear soft object by being inserted through the insertion portion. Is done. In this case, since the clamp portion is held by the holding portion, the operation of winding the linear soft object by the band portion becomes easy. However, a linear soft body may be wound in advance, and the holding portion may hold the band clamp having the band portion inserted through the insertion portion, and then the excess length portion may be cut.

In a preferred embodiment, the present invention provides
The apparatus further includes a band clamp detecting unit that is attached to the holding unit and detects a band clamp held by the holding unit. In the invention including this specific matter, it is possible to detect the presence or absence of the band clamp.

In another preferred aspect, the present invention further comprises a cutting detecting means for detecting the displacement when the cutting means is displaced to the extra length portion cutting position of the band portion. In the invention including this specific matter, it is possible to detect whether or not the cutting operation of the excess length portion has been performed.

Further, as a preferred embodiment, it is preferable to include the band clamp detecting means and the cutting detecting means described above. In this aspect, the band clamp can be detected and the cutting can be detected separately, and the displacement of the cutting means can be individually detected. For this reason, when the cutting means is displaced to the cutting position, it is possible to confirm whether or not the band clamp is actually cut.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a sectional view showing a retreating posture of the extra length cutting device 10 according to an embodiment of the present invention, FIG. 2 is a perspective view showing an appearance of the embodiment of FIG. 1, and FIG. FIG. 2 is an exploded perspective view showing the embodiment.

First, referring to FIG. 1, a band clamp C, which is an object of the illustrated embodiment, includes a band portion C1 capable of forming a loop for winding a wire bundle WA, and a band portion C1. And a clamp portion C2 for attaching the wire bundle WA to a main body device (not shown), and a band portion C1 provided on a back surface of the clamp portion C2 (a surface opposite to a surface facing the main body device). Is integrally formed with an insertion portion C3 through which the band portion C1 is inserted only in the loop tightening direction A1. In the drawing, C4 is a locking tooth of the band portion C1, and C5 is a detent claw formed on the insertion portion C3, and the band portion C1 tightening the wire bundle WA does not separate from the insertion portion C3 in the anti-insertion direction. Like that. Further, the electric wire bundle W, which is an example of a linear soft body,
A is, for example, a main line of a wire harness or a subassembly constituting the wire harness, and a part thereof is shown by a virtual line in FIG. The wire bundle WA is wired on a wiring board (not shown).

Referring to FIG. 2, in a surplus length cutting device 10 according to this embodiment, an upright portion 11 erected on a wiring board (not shown) and an upper end portion of the upright portion 11 are fixed. Holding unit 20 and cutter unit 30 attached to holding unit 20
And Further, in the specific example of FIG.
And a limit switch 40 built therein. In the following description, it is assumed that the direction in which the extra length cutting device 10 faces the linear soft object WH is assumed to be the extra length cutting device 10.
In front of

The upright portion 11 is embodied by a shaft having screw portions threaded at both upper and lower ends, and a wiring plate (not shown) formed by a pair of nuts (only one is shown) 11C screwed to the lower end side. And the upper end side is screwed into the holding portion 20 to support the holding portion 20 at a fixed position. With reference to FIGS. 1 and 3, the holding unit 20 includes a main body 21 and a cover 22 mounted on the main body 21.

The main body 21 has a rectangular mounting portion 21A into which the screw portion of the standing portion 11 is screwed, and a mounting portion 21A.
A and a block 21B extending at a right angle from the front end of A are integrally partitioned. As shown in FIG. 1, the block portion 21B defines a holder housing portion 21C that opens downward and forward, and also defines a switch housing portion 21E that opens rearward via a partition plate portion 21D. ing. And the block part 21 </ b> B
C, 21E are configured integrally with a top plate 21F that covers the upper part. The front end 21G of the top plate 21F is the block 2
It protrudes forward from 1B.

Referring to FIG. 1 and FIG.
Is a sheet metal member formed in a substantially U-shape in plan view, and includes a front plate portion 22A and a pair of mounting portions 22B and 22C extending rearward at right angles from both sides of the front plate portion 22A.
A pair of vertically opposed insertion holes 22E are formed in each of the mounting portions 22B and 22C, and are fixed to the block portion 12B via screws 22F (see FIG. 3) inserted through the insertion holes 22E. I have. In the illustrated example, each of the mounting portions 22B, 22B is attached to the block portion 12B.
A concave portion 21J for fitting C is defined in front of the outer portion, and a screw hole 21K into which the screw 22F is screwed is provided in the concave portion 21J.

A notch 22D is formed in the front plate portion 22A, and the clamp portion C2 of the band clamp C can be detached by a frictional force generated by press-fitting the clamp portion C2 of the band clamp C into the notch 22D. It can be held. As shown in FIG. 1, when the clamp portion C2 is mounted, the front plate portion 22A is set to a thickness such that the band portion C1 of the band clamp C can pass through the insertion portion C3. Further, in the illustrated example, the front plate portion 22A is set so that the clamp portion C2 can be positioned so that the band portion C1 is inserted from the lower side to the upper side. As a result, the distal end portion of the band portion C1
3 from the bottom to the top to form a loop, and the wire bundle WA
It is wound around.

The front end 21G of the top plate 21F has an insertion hole 21H through which the band C1 inserted through the insertion part C3 is inserted. This insertion hole 21H is an example of the positioning means of the present invention, and is formed integrally with the holding portion 20 and has an extra length C of the band portion C1 inserted through the insertion portion C3.
11 is cutably positioned to define a cutting margin L (see FIG. 1) of the extra length C11. The cutting margin L is a dimension set in advance so that the free end of the hand unit C1 does not interfere with the main unit (not shown) when the wire bundle WA is mounted on the main unit (not shown). The insertion hole 21H, together with a cutter unit 30 described later, constitutes a main part of the cutting means in the present invention.

The cutter unit 30 constitutes a main part of the cutting means and the operating means in the present invention, and includes a slider part 31 mounted on the top plate 21F of the holding part 20.
And an operating portion 32 connected to the rear end of the slider portion 31. In the illustrated example, the cutting means is:
This is constituted by the insertion hole 21H serving as a fixed cutter, and a cutter unit 35 described later serving as a movable cutter.

The slider portion 31 is a plate-like member having a rectangular shape in a plan view.
Is connected to the top plate 21F. Here, the insertion hole 34 through which the stud bolt 33 is inserted is formed by a long hole extending long in the front and rear direction, and is configured to be relatively displaceable in the front and rear direction along the insertion hole 34 with respect to the holding portion 20. I have. Further, a cutter section 35 partitioned into a trapezoidal shape in a plan view is formed at a front portion of the slider section 31.

The cutter portion 35 is partitioned so that the band portion C1 inserted through the insertion hole 21H of the top plate portion 21F can be inserted in the retracted position shown in FIG. Further, a cutter blade 35A is formed at a rear end portion of the cutter portion 35, and when the cutter portion 35 is displaced to the cutting posture shown in FIG.
The extra length C11 of the band portion C1 through which is inserted can be cut. In the illustrated example, the cutter blade 35
In A, the left and right sides extend obliquely with respect to the front-rear direction (see FIGS. 2 and 3). It is being cut.

The operating section 32 is a plate-shaped member orthogonal to the slider section 31. The operating section 32 is adapted to move the cutter section 35 into the retracted position shown in FIG. This is for performing a displacement operation to a posture allowing the positioning and a cutting posture shown in FIG. 4, that is, a posture for cutting the positioned extra-length portion C11.

The operating portion 32 comprises a connecting portion 32A extending below the slider portion 31 and facing the rear end face of the block portion 21B of the holding portion 20, and a handle portion 32B extending above the slider portion 31. . The connection site 32A
Are formed with a pair of insertion holes 32C arranged side by side, and are connected to the block portion 21B of the holding portion 20 by bolts 32D inserted through the insertion holes 32C. Each of the bolts 32D is fixed by protruding rearward from the block portion 21D by a predetermined length, and a compression coil spring 32E contracted between the connecting portion 32A and the block portion 21D is disposed on the outer periphery thereof. . The connecting portion 32A is constantly urged rearward by the urging force of the compression coil spring 32E. As a result, the cutter unit 35 is normally retracted to the retracted posture. On the other hand, handle part 3
2B is for the operator to manually perform the displacement operation of the slider portion 31.

Next, a limit switch 40 as cutting detection means is attached to the block 21B. The limit switch 40 has its lever 41 opposed to the connection portion 32A of the operation portion 32, and the operator grips the handle portion 32B of the operation portion 32 and
5 is displaced from the evacuation position to the cutting position, the projection 32F protruding from the front surface of the connecting portion 32A is
Is pressed, and the operating piece 42 of the limit switch 40 is pressed, so that a contact inside the limit switch 40 is connected. This makes it possible to detect whether or not the cutting operation of the extra length portion C11 of the band clamp C has been performed.

The limit switch 40 is connected to a well-known inspection device 50. By giving a signal at the time of connection to the inspection device 50, the inspection device 50 indicates to the operator that cutting work has been performed. It is supposed to. In the illustrated example, a large number of hand clamps C are to be connected to the linear soft object W, and a plurality of extra-length portion cutting devices 10 are also installed on a drawing board (not shown). Thus, the inspection device 50 also has a function of identifying which surplus portion cutting device 10 has given the signal.

In the above configuration, the cutter 35 constituting the cutting means is set in the retracted position shown in FIG. 1 in advance, and the extra length C11 of the band clamp C, in which the clamp C2 is held by the holder 20, is set. The cutting portion 3 is positioned so that it can be cut by the insertion hole 21H as a positioning means.
5 is displaced to the cutting posture shown in FIG. 4 by the operating unit 32 as the operating means, so that the cutting margin L of the surplus length C11 is precisely cut and the surplus length C11 is cut. Become.

In many cases, the band portion C1 of the band clamp C is first wound around the wire bundle WA with the clamp portion C2 held by the holding portion 20, and then inserted into the insertion portion C3. Is fixed to a soft body. In this case, since the clamp portion C2 is held by the holding portion 20, the winding operation of the wire bundle WA by the band portion C1 becomes easy. However, the excess length portion C11 may be cut after the wire bundle WA is previously wound and the holding portion 20 holds the band clamp C in which the band portion C1 is inserted through the insertion portion C3.

As described above, in the embodiment of the present invention, the cover portion 22 of the holding portion 20 is allowed in a state where the band portion C1 of the band clamp C is allowed to wind the wire bundle WA.
Can hold the band clamp C,
Insert the extra length C11 of the held band clamp C into the insertion hole 2
Since the cutting can be performed by the 1H and the cutter unit 35, the operator can smoothly perform the cutting work without performing the work of holding the tool. Moreover, since the extra length C11 in which the cutting allowance L is precisely defined by the insertion hole 21H can be cut, the projected dimension of the cut band portion C1 becomes uniform, and the outer dimension accuracy of the band clamp C is improved. Will be higher. Therefore, workability is good, and
This has a remarkable effect that a fine cut size can be obtained.

Further, by providing the limit switch 40, when the insertion hole 21H and the cutter 35 are displaced to cut the extra length C11 of the band C1, the displacement is detected. As a result, it is possible to detect whether or not the cutting operation has been performed, so that it is possible to prevent forgetting to cut. The above-described embodiment is merely a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment. For example, another form shown in FIGS. 5 and 6 can be adopted.
FIG. 5 is a cross-sectional view showing a retracted posture of the extra-length portion cutting device 60 according to another embodiment of the present invention. Also, FIG.
FIG. 6A is a cross-sectional view illustrating a cutting process performed by the extra length cutting device 60 in the embodiment of FIG. 5, and FIG.
(B) is a sectional view showing a cutting posture. 5 and 6 are the same as the embodiment of FIG. 1 except that the shape of the cutter unit 30 and the arrangement of the limit switch 40 and the shape of the corresponding main body 20 are slightly different. Corresponding members have the same reference characters allotted, and description thereof will not be repeated.

As shown in these figures, the cutter 35
Is displaced from the front to the rear, so that the extra length C11
May be cut. 5 and 6
In the example, the limit switch 70 accommodated in the holder accommodating portion 21C is employed instead of the limit switch 40. The limit switch 70 includes a lever 71 that is pushed into the clamp portion C2 of the band clamp C held by the cover portion 22, and an operating piece 72 that is pushed into the lever 71 when the lever 71 is pushed. When the piece 72 is pushed in and the internal contact is connected, the clamp portion C2 is directly detected. In this case, although it is not possible to detect whether or not the cutting operation has been performed, since the clamp portion C2 is directly detected, it is possible to reliably prevent forgetting to attach.

However, when the limit switch 40 for detecting the cutting operation is provided together with the limit switch 70, it is possible to prevent the user from forgetting to attach the switch. In that case, when the limit switch 40 detects the cutting operation, it can be detected by the limit switch 70 whether or not the band clamp C is actually mounted, so that the cutting operation can be more reliably confirmed. It becomes possible.

Further, the linear soft object which is an object of the present invention includes all the objects wound by the clamp band, such as a bundle of electric wires and a single product, a bundle of cables and a single product of a cable, and the like. I have. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0034]

As described above, in the present invention, the holding portion can hold the band clamp in a state where the band portion of the band clamp allows the linear soft object to be wound. Since the retained extra length of the band clamp can be cut by the cutting means, the operator can smoothly perform the cutting work without having to change tools. In addition, since the extra length portion in which the cutting margin is precisely defined by the positioning means can be cut, the projected dimension of the cut band portion becomes uniform, and the outer dimension accuracy of the band clamp increases.
Therefore, according to the present invention, there is a remarkable effect that the workability is good and the cutting size can be finished to a precise one.

Further, in the invention provided with the band clamp detecting means for detecting the band clamp held by the holding portion, which is provided alongside the holding portion, the presence / absence of the band clamp can be detected. There is an advantage that forgetting to attach the clamp can be prevented. Further, in the invention further provided with a cutting detecting means for detecting a cutting operation, it is possible to detect whether or not the cutting operation of the band portion has been performed, so that forgetting to cut can be prevented. There are advantages.

Further, when both band clamp detecting means and cutting detecting means are provided, the band clamp detecting means detects whether or not the band clamp is actually mounted when the cutting work is detected. Since it is possible to confirm the cutting operation, there is an advantage that it is possible to confirm the cutting operation more reliably.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a retreating posture of an extra length cutting device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of the embodiment of FIG.

FIG. 3 is an exploded perspective view showing the embodiment of FIG.

FIG. 4 is a cross-sectional view of the embodiment of FIG. 1 in a cutting posture.

FIG. 5 is a cross-sectional view showing a retreating posture of the extra length cutting device according to another embodiment of the present invention.

FIGS. 6A and 6B show a cutting process by the extra length cutting device in the embodiment of FIG. 5, in which FIG. 6A is a cross-sectional view showing a retracted posture, and FIG. 6B is a cross-sectional view showing a cutting posture.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 extra length cutting device 20 main body portion 30 slide portion 40 limit switch 60 extra length cutting device 70 limit switch C band clamp C1 band portion C2 clamp portion C3 insertion portion

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B26D 3/00 H02G 3/26 F16B 2/08

Claims (4)

(57) [Claims] 1. A band capable of forming a loop for winding a linear soft object, a clamp for attaching the linear soft object to a main body device via the band, and a back surface of the clamp. A band clamp extra length cutting device which is used when attaching a band clamp to the linear soft object, the band clamp being provided and integrally having an insertion portion that allows the band portion to be inserted only in the loop tightening direction of the band portion. And a holding portion fixed to an upper end of an upright portion erected on the wiring board and holding the clamp portion of the band clamp in a state where a band portion wound with a linear soft body can be inserted into the insertion portion. Positioning means formed integrally with the holding portion and positioning the extra length of the band portion through which the insertion portion is inserted so as to be cuttable and defining a cutting margin of the extra length portion; and a relative displacement with respect to the holding portion. Can be mounted, Cutting means for cutting the set extra length of the band portion; a retracting posture for allowing the extra length portion of the band portion to be positioned by the positioning means; and a cutting attitude for cutting the positioned extra length portion. And an operating means for displacing the cutting means. 2. The band clamp extra length cutting apparatus according to claim 1, further comprising: a band clamp detecting means attached to said holding portion for detecting the band clamp held by said holding portion . Extra length cutting device . 3. The apparatus according to claim 1, further comprising cutting detection means for detecting the displacement when the cutting means is displaced to the extra length cutting position of the band portion. Extra length cutting device for band clamp . 4. A band clamp extra length cutting device according to claim 1, wherein said detecting means is provided alongside said holding portion and detects the band clamp held by said holding portion, and said cutting means comprises an extra length of the band portion. Extra length portion of the band clamp further comprising cutting detection means for detecting the displacement when displaced to the part cutting position.
Cutting device .