JP2002061776A - Harness wrapping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate trouble of sticking a protective tape to a place to wire a harness H3 on a corner 2a of a sewing machine frame to protect the coating of the harness H3, in a harness wrapping device for wiring the harness H3 such as an electric wire and a cable on a given mounting place on the sewing machine frame. SOLUTION: The harness wrapping device, comprises a harness holder 22 of synthetic resin for gripping the harness H3, and bolts 28 for fixing the harness holder 22 to a given mounting place. A fin element 26 to be interposed between the harness H3 gripped by the harness holder 22 and the mounting place is integrally formed an the harness holder 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harness holding device for wiring a harness such as an electric wire or a cable to a predetermined mounting portion such as a frame or a bracket.

[0002]

2. Description of the Related Art Along with recent advances in electronic engineering technology, an electronic control device such as a microcomputer has been mounted on a sewing machine, thereby achieving a high-performance sewing machine. Such an electronic control device includes a central processing unit (CPU) for executing various arithmetic processes and controls, and a read-only memory (RO) for storing each control program.
M), a random-access memory (RAM) for temporarily storing various data and the like, and the like, and the electronic control device, various sensors, actuators, a liquid crystal display device with a touch panel, and the like; Control boards such as various sensors and actuators are connected via harnesses.

Conventionally, when wiring a harness to a predetermined mounting location such as a frame or a bracket, a plurality of locations in the wiring direction of the harness are enclosed by a metal or synthetic resin harness holder, and The holder is fixed to the mounting portion by a fixing means such as a bolt.

[0004]

FIG. 12 shows, as a conventional example, a case where a harness H 'is bent at a corner of a sewing machine frame F' and wired. Generally, the sewing machine frame F ′ is formed by die-casting using aluminum or the like as a raw material.
In some cases, burrs and the like may be formed at the joining portions of the molds such as the corners of the mold.

[0005] While the harness H 'is held and fixed by the harness holder H0 in the vicinity of such a corner, when it is bent and wired at the corner, the vibration during the operation of the sewing machine or the like causes
The harness H 'and the corners rub against each other, so that the coating of the harness H' is damaged, and there is a risk that electric leakage (dielectric breakdown) may occur therefrom.

Therefore, conventionally, as shown in FIG.
A protective tape T 'is attached to the wiring portion of the harness H' in the corners of the sewing machine frame F 'to prevent the harness H' from directly contacting the corners. Protected from breaking.

However, in this case, since the protective tape T 'must be attached to all of the wiring portions of the harness H' in the corners of the sewing machine frame F ', the wiring work of the harness H' is troublesome. There was a problem. Further, there is also a problem that the protective tape T 'is peeled off due to adhesion of mechanical oil or the like during the operation.

Therefore, it is a technical object of the present invention to provide a harness holding device which solves such a problem.

[0009]

In order to achieve this technical object, a harness holding device according to a first aspect of the present invention includes a harness holder made of a synthetic resin for holding a harness, and a predetermined attachment of the harness holder. Fixing means for fixing to the location, wherein a fin piece interposed between the harness held by the harness holder and the attachment location is formed integrally with the harness holder.

[0010] The harness holding device according to the second aspect is the first aspect.
In the above description, the harness holder is configured by a base fixed to the mounting portion, a holder for enclosing the harness, and a connecting piece, and is held by the holder among the side edges of the base. The fin pieces are formed so as to extend substantially parallel to the wiring direction of the harness from at least one of both side edges crossing the wiring direction of the harness.

According to a third aspect of the present invention, in the harness holding device according to the first aspect, the harness holder includes a base fixed to the mounting portion and a connecting piece connected to the base. Loop adjusting means for adjusting the size of the loop portion, wherein the loop portion is formed by inserting a free end of the connecting piece through a slot formed in the base portion so as to enclose the harness. It is provided.

According to a fourth aspect of the present invention, there is provided the harness holding device.
In the above description, the loop adjusting means is configured to be capable of adjusting the size of the loop portion by changing a length of the connection piece drawn out from the slot.

According to a fifth aspect of the present invention, there is provided the harness holding device according to the third aspect.
Or the description of 4, wherein at least one of the side edges of the base portion that intersect with the wiring direction of the harness held by the holder portion, the fin pieces are disposed in the wiring direction of the harness. Are formed so as to extend substantially in parallel.

Further, the harness holding device according to claim 6 is
The conductive filler such as carbon black or metal fiber is added to at least one of the fin pieces and the harness holder according to any one of claims 1 to 5.

[0015]

According to the first aspect of the present invention, for example,
When wiring by bending the harness at the corners of the frame, bracket, etc.
If it is set in the vicinity of the corner portion so that the corner portion can be covered with a fin piece, the harness and the corner can be fixed only by fixing the harness holder that holds the harness to the attachment portion. Since the fin pieces can be interposed between the portion and the wiring portion of the harness, the harness can be prevented from directly contacting the corner portion, and the covering of the harness can be protected. Further, it is not necessary to attach a conventional protection tape to the wiring portion of the harness in the corner portion, and the wiring work of the harness is extremely simplified.

According to a second aspect of the present invention, there is provided a harness holding device.
Wherein the harness holder is composed of a base fixed to a predetermined mounting portion, a holder for enclosing the harness, and a connecting piece.

In this configuration, at least one of the side edges of the base that intersect with the wiring direction of the harness held by the holder portion, the fin pieces are moved in the wiring direction of the harness. Since it is formed so as to extend substantially in parallel to the harness, it is preferable that the fin piece can be formed so as to extend in the wiring direction of the harness to be protected.

According to a third aspect of the present invention, there is provided a harness holding device.
Wherein the harness holder is composed of a base fixed to a predetermined mounting portion and a connecting piece connected to the base.

In this configuration, the size of the loop portion formed by inserting the free end of the connecting piece into the slot formed in the base portion depends on the size (thickness) of the outer peripheral portion of the harness. Since the harness can be adjusted by the loop adjusting means, the harness can be firmly held by the loop portion.

In particular, according to the structure of the fourth aspect, the size of the loop portion can be easily adjusted by changing the length of the connecting piece drawn out from the slot. Further, the configuration according to claim 5 is preferable because, similarly to the case of claim 2, the fin pieces can be formed so as to extend in the wiring direction of the harness to be protected.

Further, according to the present invention, it is possible to prevent the harness from being subjected to electromagnetic interference (noise) by the conductive filler such as carbon black or metal fiber added to at least one of the fin pieces and the harness holder. It can be suppressed.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings when applied to a sewing machine with an embroidery function. Note that the present invention is not limited to such a case, and it goes without saying that the present invention can be widely applied to a case where a harness of an OA device such as a home electric appliance, a facsimile device, a printer, or the like is fixed to a mounting member such as a frame.

FIGS. 1 to 6 show a first embodiment of the present invention. The sewing machine shown in FIG.
Sewing machine frame 1 comprising:
And a housing 4 that covers the One end of the main shaft 5 arranged in the arm portion 2 projects from the right end of the sewing machine frame 1 as viewed from an operator. As shown in FIG. 2, a belt 7 wound around a pulley 6 attached to one end thereof is driven by a drive pulley (not shown) of a sewing machine motor 8 installed below the bed portion 3.
The main shaft 5 is rotated in a fixed direction by driving the sewing machine motor 8.

A balance crank, a needle bar crank rod and the like (not shown) are provided at the other end of the main shaft 5 in the arm portion 2.
And the balance 9 and the needle bar 10 are reciprocated in the vertical direction through these.

The arm unit 2 has a thread gripping actuator 13 for stopping the feeding by holding the needle thread 11 coming out of the thread top 12 installed on the upper part thereof, an encoder 14 for detecting a thread feeding amount, An upper thread feeding motor 15 that rotates in a certain direction in accordance with a control signal of an electronic control device 20 described later, a driving roller 16 attached to the upper thread feeding motor 15, and a driven roller 17 that is constantly pressed against the driving roller 16; It has.

As shown in FIG. 2, the upper thread 11 coming out of the thread top 12 passes through a thread gripping actuator 13 and an encoder 14 for detecting the amount of thread discharged, and is held between a driving roller 16 and a driven roller 17. Then, it is supplied to the sewing needle 18 at the lower end of the needle bar 10 through the balance 9.

The driven roller 17 is pressed against the circumferential surface of the drive roller 16 by a spring (not shown) to hold the upper thread 11 between the driven roller 16 and the driven roller 16. The pinching force between the driving roller 16 and the driven roller 17 is controlled by the yarn gripping actuator 1.
In a state where the upper thread 11 is gripped by the thread gripping actuator 13, the upper thread 11 is weaker than the gripping force of the upper thread 3, and the upper thread 11 is set so as not to be unwound by continuous rotation of the rollers 16 and 17. .

In the encoder 14 for detecting the amount of needle thread unreeling, the needle thread 11 is wound once around a pulley attached to its rotary shaft. In addition, near the one end of the arm 2, there is provided an upper thread feeding start phase detection sensor 19 for detecting the timing of starting feeding of the upper thread 11 based on the rotation angle of the main shaft 5.

In the first embodiment, a photo interrupter or an opto-isolator as the needle thread feeding start phase detecting sensor 19 has a slit formed in a disk (not shown) which rotates integrally with the main shaft 5. Is detected, the timing of the start of feeding of the upper thread 11 is detected.

Further, as shown in FIG. 3, an electronic control device 20 to be described later is installed at a position on the right side of the front surface of the arm 2 as viewed from the operator, and is located at a position on the right side of the rear surface of the arm 2. Is provided with a sewing machine operation request signal generation circuit 21 described later.

In the first embodiment, leg mounting holes 36 are formed at four corners and the like of the bottom plate of the sewing machine. As shown in FIG. The male pin 39 is fitted into the leg mounting hole 36, and is fitted into a pin mounting hole 38 formed substantially at the center of the rubber leg 37 from above. In order to stabilize the installation state of the sewing machine, an adjusting screw 40 attached to the rubber leg 37 is screwed into a leg attachment hole 36 at one corner of the bottom plate of the sewing machine, as shown in FIG. I have.

Next, a configuration for executing the automatic supply control of the upper thread 11 will be described. FIG. 4 is a functional block diagram of an electronic control device 20 such as a microcomputer that executes this control. Although not shown, the electronic control device 20 temporarily stores a central processing unit (CPU) for executing various arithmetic processing and control, a read-only memory (ROM) for storing each control program, and various data. It has a read / write memory (RAM) as needed, and an input / output interface connected to various input / output units for transmitting data and the like.

The input interface of the electronic control unit 20 includes an encoder 14 for detecting the amount of needle thread feeding, a phase detection sensor 19 for starting the needle thread feeding, and a sewing machine operation request signal generating circuit 21, and harnesses H1, H with connectors.
2 and H3. On the other hand, the sewing machine motor 8, the thread gripping actuator 13, and the upper thread feeding motor 15 are connected to the output interface via harnesses H4, H5, H6 with connectors.

Here, the thread gripping actuator 13 is driven and controlled based on an output signal from an encoder 14 for detecting a needle thread feeding amount and an output signal from a needle thread feeding start phase detecting sensor 19, and controls the sewing machine motor 8 and The upper thread feeding motor 15 is configured to be driven and controlled based on an output signal from the sewing machine operation request signal generation circuit 21.

Next, the configuration of the harness holder 22 according to the present invention will be described. The harness holder 22 is formed by integrally molding a synthetic resin material having electrical insulation properties such as a polypropylene resin by injection molding, and as shown in FIG. 5, a base 23 fixed to a predetermined mounting portion of the sewing machine frame 1. , A holder 24 for holding the harness, and a connecting piece 25 connected to the holder 24.

One of the side edges of the base 23 extending in a direction intersecting with the wiring direction W of the harness held by the holder 24 has a thin-walled flexibility. The fin pieces 26 are integrally formed so as to extend substantially parallel to the wiring direction W.

As shown in FIG. 5B, a bolt insertion hole 27 is formed in the base 23 and the connecting piece 25, respectively.
And the connecting piece 25 are overlapped with each other (in the first embodiment, four places in total).

In order to fix the harness holder 22 to a predetermined mounting position, first, the harnesses H1 to H
6, the bolt 28 as a fixing means is inserted into the bolt insertion hole 27 in a state where the base 23 and the connecting piece 25 are overlapped. Then, the bolt 28 is screwed into a screw hole (not shown) for drilling at the mounting location.

In the first embodiment, a portion near the corner 2a located above the front surface of the arm portion 2 as viewed from the operator, where the corner 2a can be covered with the fin 26, A corner 2b also located above the rear surface of the arm 2
The harness holders 22 and 22 are fastened by bolts 28 to a location near the corner 2b where the corner 2b can be covered with the fin piece 26 (FIGS. 2, 3, and 6).
And a harness H3 connecting the electronic control device 20 and the sewing machine operation request signal generation circuit 21 to the two corners 2
The wiring is made so as to be bent at a and 2b.

With the above configuration, for example, the corner 2
a when the wiring is performed by bending the harness H3 at the corner 2a.
The harness H3 can be covered with the fin pieces 26 only by fastening the harness holder 22 holding the harness H3 with the bolt 28 (see FIG. 6). The fin piece 26 can be interposed between the wiring portion of the harness H3 and the corner portion 2a.

Therefore, it is possible to prevent the harness H3 from directly contacting the corner 2a, and to protect the harness H3 from being broken. Further, it is not necessary to attach a conventional protection tape to the wiring portion of the harness H3 in the corner 2a, and the wiring work of the harness H3 is extremely simplified.

In the first embodiment, one of the side edges of the base portion 23 of the harness holder 22 that intersects the wiring direction W of the harness H3 held by the holder portion 24 is provided with a fin piece. 26 are integrally formed so as to extend substantially parallel to the wiring direction W, but the invention is not limited to this, and a fin 26 may be formed on the other side edge 23b. As in the second embodiment shown in FIG. 8 and the fourth embodiment (details will be described later) shown in FIG. 9, they may be formed on both side edges 23a and 23b. That is, the fin pieces 26 extend in the wiring direction W of the harness H3 to be protected.
Is preferably formed.

Here, in the embodiments after the second embodiment, those having the same structure and operation as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed description thereof will be given. Is omitted.

As shown in FIG. 7, both side edges 23a,
When the fin pieces 26, 26 are respectively formed on the arm 23b, the harness holder 29 of the second embodiment is disposed on the upper surface of the arm portion 2 and is substantially parallel to the wiring direction W from one side edge 23a. Corners 2b with fin pieces 26
The corner 2a can be covered with a fin piece 26 extending substantially parallel to the wiring direction W from the other side edge 23b (see FIG. 8).

The fixing means for fixing the harness holder 22 is not limited to the bolt 28. For example, as in the third embodiment shown in FIG. 9, the fitting pins 31 are integrally formed with the connecting pieces 25 of the harness holder 30 (two in the third embodiment), and the harness is passed through the holder portion 24. Then, the fitting pin 29 may be fitted and fixed in the insertion hole 41 of the base 23 and the hole formed in a predetermined mounting position in a state where the base 23 and the connecting piece 25 are overlapped.

FIG. 10 shows a fourth embodiment which is another example of the form of the holder 24 in the first to third embodiments. The harness holder 32 according to the fourth embodiment includes a base 23 fixed to a predetermined mounting portion of the sewing machine frame 1 and a connecting piece 25 connected to the base 23, and a slot 33 formed in the base 23. The harness is configured to be held by a loop portion 34 formed by inserting the free end of the connecting piece 25 into the harness. On the free end side of the connecting piece 25, as a loop adjusting means for adjusting the size of the loop portion 34,
A long slot 35 is formed along the insertion direction of the connecting piece 25.

In this case, in order to fix the harness holder 32 at a predetermined mounting position, first, the loop portion 34
After passing through the harnesses H1 to H6, a bolt (not shown) as a fixing means is inserted into the bolt insertion hole 27 of the base 23 and the long hole 35 in a state where the base 23 and the connecting piece 25 are overlapped. Insert. Then, the bolt (not shown) is screwed into a screw hole (not shown) for drilling at the mounting location.

The size of the loop portion 34 is adjusted by moving the free end of the connecting piece 25 along the direction of arrow P shown in FIG. This is done by changing the length.

With the above configuration, the size of the loop portion 34 can be easily adjusted by moving the free end of the connecting piece 25 along the direction of the arrow P shown in FIG. 10B. According to the size (thickness) of the outer peripheral portion of the harness, the harness can be firmly held by the loop portion 34.

The loop adjusting means according to the present invention comprises:
The present invention is not limited to the above-described elongated hole 35, and may be, for example, a plurality of insertion holes formed at appropriate intervals along the insertion direction of the connecting piece 25. In this case, according to the size (thickness) of the outer peripheral portion of the harness, one of the plurality of insertion holes in the connection piece 25 is matched with the bolt insertion hole 27 of the base 23, and the bolt is fastened.

In any of the embodiments, when the harness holders 22, 29, 30, 32 are injection-molded, at least the fin pieces 26 (preferably as a whole) are formed.
By adding carbon black as a conductive filler, the harness H3 can be prevented from receiving electromagnetic interference (noise). The conductive filler is not limited to carbon black, and may be any conductive material such as nickel powder, metal fibers such as copper and stainless steel.

[Brief description of the drawings]

FIG. 1 is a front view of a sewing machine according to a first embodiment.

FIG. 2 is a schematic configuration diagram of a sewing machine.

FIG. 3 is a right side view of the sewing machine frame showing an arrangement relationship with a harness holder, a harness, an electronic control device, and the like.

FIG. 4 is a functional block diagram of the electronic control device.

FIG. 5A is a schematic perspective view of a harness holder in a state where a base and a connecting piece are separated, and FIG. 5B is a schematic perspective view of a harness holder in a state where the base and the connecting piece are overlapped.

FIG. 6 is a schematic perspective view showing an operation state of the harness holding device of the first embodiment.

FIG. 7 is a schematic perspective view showing a harness holder according to a second embodiment.

FIG. 8 is a schematic perspective view showing an operation state of the harness holding device of the second embodiment.

FIG. 9 is a schematic perspective view showing a harness holder according to a third embodiment.

FIGS. 10A and 10B are views showing a fourth embodiment, in which FIG. 10A is a schematic perspective view of a harness holder in a state where a base and a connecting piece are separated, and FIG. It is a schematic perspective view of the harness holder in the state where the edge was penetrated and the loop part was formed.

11A is a cross-sectional view illustrating a configuration of rubber legs and the like that support the sewing machine, and FIG. 11B is a cross-sectional view illustrating a configuration for stabilizing the installation state of the sewing machine.

FIG. 12 is a schematic perspective view showing an operation state of a conventional harness holding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sewing machine frame 2 arm section 3 bed section 8 sewing machine motor 13 thread gripping actuator 14 needle thread feeding amount detection encoder 15 needle thread feeding roller 19 needle thread feeding start phase detection sensor 20 electronic control device 21 sewing machine operation request signal generation circuit 22, 29, 30, 32 Harness holder 23 Base part 24 Holder part 25 Connecting piece 26 Fin piece 33 Slot hole 34 Loop part 35 Slotted hole as loop adjusting means

Claims (6)

[Claims] 1. A harness holder made of a synthetic resin for enclosing a harness, and fixing means for fixing the harness holder to a predetermined mounting location, wherein the harness held by the harness holder and the harness A harness holding device, wherein a fin piece interposed between the harness holder and the attachment portion is formed integrally with the harness holder. 2. A base for fixing the harness holder to the attachment location, a holder for holding the harness,
A connecting piece, and at least one of the side edges of the base that intersect the wiring direction of the harness held by the holder portion, the fin piece is moved in the wiring direction of the harness. The harness holding device according to claim 1, wherein the harness holding device is formed so as to extend substantially parallel to the harness. 3. The harness holder comprises a base fixed to the mounting portion, and a connecting piece connected to the base, and a free end of the connecting piece is inserted into a slot formed in the base. 2. The harness holding device according to claim 1, wherein the harness is held by a loop portion formed by the loop, and a loop adjusting unit for adjusting a size of the loop portion is provided. 3. . 4. The loop adjusting means changes a drawing length of the connecting piece from the slot,
The harness holding device according to claim 3, wherein the size of the loop portion is adjustable. 5. The fin piece is displaced from at least one of the side edges of the base portion intersecting with the wiring direction of the harness held by the holder portion with respect to the wiring direction of the harness. The harness holding device according to claim 3, wherein the harness holding device is formed so as to extend substantially in parallel. 6. A conductive filler such as carbon black or metal fiber is added to at least one of the fin pieces and the harness holder.
The harness holding device according to any one of the above.