JP2006175005A - Switch mounting structure of sewing machine and sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch mounting structure of a sewing machine for improving operability when in use of a switch and preventing erroneous operation when not in use of the switch. <P>SOLUTION: The mounting structure of a switch 11 has a mounting plate 21 and a mounting mechanism 22. The mounting plate 21 has a switch part and an operating part 12 of the switch 11 assembled on it. The mounting mechanism 22 is provided for mounting the mounting plate 21 to a machine frame 8 so as to switch at least between a first position 21A and a second position 21B. In the first position 21A, the operating part 12 is placed on a front face of the sewing machine M near a needle bar 5 in a position near a jaw part 6 of an arm part. In the second position 21B, the operating part 12 is separated from the needle bar 5 in the position near the jaw part 6 of the arm part with respect to the first position 21A. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a switch mounting structure for inputting a command to perform a predetermined operation via an electric actuator connected to an operation mechanism of a sewing machine, and in particular, the position of a mounting plate in which a switch unit and an operation unit of the switch are assembled can be switched. About what you did.

  Conventionally, it has been desired that various switches provided on the sewing machine be provided at positions that are easy for an operator to operate. For example, the touchback switch is used when manual reverse stitching is performed to prevent fraying at the beginning and end of sewing. Therefore, the touchback switch should be provided at a position where it can be easily operated. Therefore, it is desired to improve the operability of the touch back switch at the time of reverse stitching.

Patent Document 1 discloses a sewing machine in which a touchback switch is fixed to a jaw portion of an arm portion. As described above, since the touchback switch is provided on the jaw portion of the arm portion, when performing reverse stitching, the touchback switch can be operated with little movement of the hand, and the operability of the touchback switch during reverse stitching. Can be increased.
JP 2001-321590 A

  When performing a sewing operation that does not involve reverse stitching, if the touch-back switch is provided on the jaw, it is easy for the hand to touch the touch-back switch operation part accidentally during the sewing operation, and the touch-back switch may be operated incorrectly. There is. For this reason, when performing a sewing operation that does not involve reverse stitching, it is desirable to provide a touchback switch at a higher position so as not to interfere with the hand.

  On the other hand, when performing a sewing operation involving reverse stitching, there is a demand for improving the operability of the touchback switch by allowing the touchback switch to be operated with little movement of the hand. In that case, it is desirable to provide the touchback switch at a position closer to the needle bar. Therefore, it is conceivable to provide a switching mechanism that can switch the position of the touchback switch. In this case, new parts are required, and the installation takes time.

  The purpose of the present invention is to improve the operability when using the switch in the switch mounting structure of the sewing machine, to prevent erroneous operation when not in use, and to realize a switch mounting structure with a simple structure without increasing the number of parts. It can be done.

  The switch mounting structure for a sewing machine according to claim 1 is a switch mounting structure for inputting a command for performing a predetermined operation via an electric actuator connected to an operation mechanism of the sewing machine, wherein the switch part and the operation part of the switch are assembled. An attachment plate; and the attachment plate, at least a first position where the operation portion is located in front of the sewing machine near the needle bar near the jaw portion of the arm portion; And an attachment mechanism for attaching to the sewing machine frame so as to be switchable over a second position which is a position away from the needle bar in the vicinity of the jaw.

  A first position in which the operating portion is positioned in front of the sewing machine in the vicinity of the needle bar near the jaw portion of the arm portion, and the operating portion is located near the jaw portion of the arm portion with respect to the first position. Since it has an attachment mechanism that is attached to the sewing machine frame so that it can be switched over to the second position, which is a position separated from the bar, the switch part and the operation part of the switch assembled to the attachment plate are moved from the first position to the second position. Switching between two positions is possible. For example, when the switch is used, the mounting plate can be switched to the first position, and when the switch is not used, the mounting plate can be switched to the second position.

  A switch mounting structure for a sewing machine according to a second aspect is the invention according to the first aspect, wherein the mounting plate is formed in a substantially L shape in a side view, and the mounting mechanism includes a screw member for mounting the mounting plate to a sewing machine frame. A flange portion in a vertical position at a rear end of the mounting plate, and a cam hole formed in the flange portion, and the mounting plate is stretched between the first position and the second position with the screw member inserted therethrough. And a cam hole that is position-switchable.

  The switch mounting structure for a sewing machine according to claim 3 is the invention according to claim 2, wherein the cam hole includes at least one of a curved portion and a bent portion so that the direction of the cam hole changes from one end to the other end. It is characterized by being formed.

  The switch mounting structure for a sewing machine according to a fourth aspect of the invention is the invention of the second aspect, wherein the cam hole has a straight hole portion and two arc cam hole portions branched from the straight hole portion. It is formed in a shape.

  The switch mounting structure of the sewing machine according to claim 5 is the invention according to claim 1 or 2, wherein the mounting mechanism can fix the mounting plate at any intermediate position during the transition from the first position to the second position. It is characterized by being configured.

  The switch mounting structure for a sewing machine according to a sixth aspect is the invention according to any one of the first to fifth aspects, wherein the operating mechanism is a cloth feeding mechanism, and the switch issues a command to reverse the cloth feeding direction as the predetermined operation. It is a touchback switch for inputting.

  A sewing machine according to a seventh aspect is provided with the sewing machine switch mounting structure according to any one of the first to sixth aspects.

  Since the switch portion and the operation portion of the switch assembled on the mounting plate can be switched from the first position to the second position, for example, when the switch is used, the mounting plate is switched to the first position. If the switch is not used, the mounting plate can be switched to the second position.

  According to the first aspect of the present invention, the mounting plate and the mounting plate are arranged such that the operating portion is located on the front surface of the sewing machine near the needle bar near the jaw portion of the arm portion, and the operating portion with respect to the first position. Has a mounting mechanism that is mounted on the sewing machine frame so that it can be switched over to the second position, which is a position separated from the needle bar in the vicinity of the jaw portion of the arm portion, so that the switch portion of the switch assembled on the mounting plate The operation unit can be switched from the first position to the second position. For example, when the switch is not used, if the mounting plate is switched to the second position, the operating part is located at a position away from the needle bar, so that it is possible to prevent the hand from interfering with the operating part during sewing work. Can prevent misoperation.

  On the other hand, when using a switch, if the mounting plate is switched to the first position, the operating part is located on the front of the sewing machine in the vicinity of the needle bar, so that the switch can be operated with almost no movement of the hand. Will improve.

  According to the invention of claim 2, the mounting plate is formed in a substantially L shape in side view, and the mounting mechanism includes a screw member for mounting the mounting plate to the sewing machine frame, and a flange portion in a vertical posture at the rear end of the mounting plate. And a cam hole formed in the flange portion, wherein the mounting plate can be switched between the first position and the second position in a state where the screw member is inserted. The position of the mounting plate can be easily switched by moving the mounting plate with the screw member inserted through the cam hole. Moreover, since position switching can be realized with a simple structure, the number of parts is not increased, which is advantageous in terms of cost.

  According to the invention of claim 3, the cam hole is formed in a shape including at least one of the curved portion and the bent portion so that the direction changes from one end to the other end. Simplify. In addition, since the position of the mounting plate can be switched simply by moving the mounting plate along the cam hole formed in a shape including at least one of the curved portion and the bent portion, the switch position switching operation is simplified.

  According to the fourth aspect of the present invention, the cam hole is formed in a substantially “字” shape having a straight hole part and two arc cam hole parts branched from the straight hole part. Simplify. Moreover, since the position of the mounting plate can be switched simply by moving the mounting plate along the straight hole and the arc cam hole, the switch position switching operation is simplified.

  According to the invention of claim 5, the attachment mechanism is configured to be able to fix the attachment plate to an arbitrary intermediate position in the middle of the transition from the first position to the second position. It can also be fixed at a desired intermediate position between the second positions, and the touchback switch can be switched to a position where the operator can easily work.

  According to the invention of claim 6, since the operation mechanism is a cloth feed mechanism, and the switch is a touchback switch for inputting a command for reversing the cloth feed direction as the predetermined operation, the sewing work without reverse stitching is performed. In the case where the mounting plate is switched to the second position, it is possible to prevent the hand from interfering with the operation unit during the sewing operation and to prevent erroneous operation of the touchback switch. On the other hand, when sewing work involving reverse stitching is performed, the touchback switch can be operated with little movement of the hand by switching the mounting plate to the first position, and the operability of the touchback switch during reverse stitching is improved.

  According to the invention of claim 7, when the sewing machine has the switch mounting structure of the sewing machine of claim 1, the switch part and the operating part of the switch assembled to the mounting plate are moved from the first position to the second position. For example, when the switch is not used, when the mounting plate is switched to the second position, the operation unit is located at a position separated from the needle bar, and the hand is moved to the operation unit during sewing work. Interference can be prevented and erroneous operation of the switch can be prevented. On the other hand, when the switch is used, when the mounting plate is switched to the first position, the operation unit is located on the front surface of the sewing machine in the vicinity of the needle bar, so that the switch can be operated with almost no movement of the hand.

  In the touchback switch mounting structure of the present invention, the mounting plate in which the switch portion of the touchback switch and the operation portion are assembled is located at the first position where the operation portion is located near the needle bar and near the needle bar of the arm portion. And an attachment mechanism for attaching to the sewing machine frame so that the operation part can be switched over to a second position located on the front surface of the sewing machine and spaced apart from the needle bar in the vicinity of the jaw part of the arm part.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the staggered sewing machine M includes a bed portion 1, a leg column portion 2 erected on the right side portion of the bed portion 1, and a leg column portion 2 so as to face the bed portion 1. The arm portion 3 extends leftward from the upper portion of the arm portion 3 and the head portion 4 provided on the left portion of the arm portion 3. The bed 1 is provided with a thread trimming mechanism (not shown), a rotary hook (not shown), and the like, and a bobbin around which a lower thread is wound is detachably mounted on the rotary hook.

  Although not shown in the figure, a main shaft that is driven by a sewing machine motor 43 (see FIG. 3) is provided inside the arm portion 3, and a needle bar drive that drives the needle bar 5 up and down by the main shaft is provided on the head 4. A mechanism (not shown) and a needle bar swinging mechanism (not shown) that swings the needle bar 5 from side to side are provided. Near the jaw 6 of the arm 3, a touchback switch 11 (switch) assembled to the mounting plate 21 is attached to the machine frame 8 so as to protrude forward from the rear of the staggered sewing machine M.

  Inside the bed portion 1, there is provided a cloth feed mechanism 45 (see FIG. 3) that drives a feed dog (not shown) in the front-rear direction (cloth feed direction) and drives the feed dog in the vertical direction. The reverse feed solenoid 44 (see FIG. 3) is activated by a command for reversing the cloth feed direction input from the touch back switch 11. Thereby, the cloth feed mechanism 45 reverses the cloth feed direction and performs reverse stitching. Here, the cloth feed mechanism 45 corresponds to an operation mechanism, and the reverse feed solenoid 44 corresponds to an electric actuator.

  Here, the control system of the staggered sewing machine M will be briefly described. As shown in FIG. 3, the control device 31 includes an input interface 34, a CPU 35, a ROM 36 and a RAM 37, an electrically rewritable nonvolatile flash memory 38, an output interface 39, and a data bus that interconnects them. Etc., and a drive circuit 41, 42 and the like.

  Connected to the input interface 34 are a start / stop switch 32, a rotational position detection sensor 33 that detects the rotational position of the sewing machine motor 43 (rotational position of the main spindle of the sewing machine) and the rotational speed, and the touchback switch 11. A drive circuit 41 for the sewing machine motor 43 and a drive circuit 42 for driving the reverse feed solenoid 44 are connected to the output interface 39.

  The ROM 36 stores in advance a drive control program for driving and controlling motors for driving various drive mechanisms, a display data creation control program, pattern sewing data for a plurality of types of pattern patterns, and the like.

  The RAM 37 is provided with a sewing data memory for storing sewing data to be used for sewing, various memories for storing calculation results calculated by the CPU 35, pointers, counters, and the like as necessary.

  Next, the attachment structure of the touchback switch 11 will be described with reference to FIGS. The attachment structure of the touchback switch 11 includes a substantially L-shaped attachment plate 21 in which the reverse stitching operation body 12 (operation portion) of the touchback switch 11 and the limit switch 13 (switch portion) are assembled, and the attachment plate 21. It is comprised from the attachment mechanism 22 which attaches to the machine frame 8 (refer FIG. 2).

  The touch back switch 11 includes a reverse stitching operation body 12, a limit switch 13, a return spring plate 14, a cord 15, a case member 16, and the like. As shown in FIG. 6, the reverse stitching operation body 12 includes a knob portion 12a, a shaft portion 12b formed integrally with the knob portion 12a, and a cylindrical member 12c externally fitted to the shaft portion 12b.

  The cylindrical member 12c is formed with a curved elongated hole 12e in the circumferential direction of the axially middle step portion thereof, and a protrusion 12d formed in the axially middle portion of the axial portion 12b is movable along the elongated hole 12e. Therefore, the knob portion 12a can be rotated about 90 ° clockwise from the horizontal posture to the vertical posture. Here, in FIG. 4, when the knob part 12a is in a horizontal posture, it is indicated by a solid line, and when it is in a vertical posture, it is indicated by a two-dot chain line. Further, in the state where the reverse stitching operation body 12 is positioned in the front, the peripheral wall 12f before and after the elongated hole 12e comes into contact with the protrusion 12d, so that the reverse stitching operation body 12 can be prevented from falling off.

  A return spring plate 14 bent in a U-shape is provided between the reverse stitching operation body 12 and the limit switch 13. When the knob portion 12a of the reverse stitching operation body 12 is pressed with a finger, the return spring plate 14 comes into contact with the operating portion 13a of the limit switch 13, and the limit switch 13 is turned on. As a result, the reverse feed solenoid 44 is operated to reverse the cloth feed direction and perform reverse feed stitching. When the finger is released from the knob 12a, the reverse stitching operation body 12 is moved forward by the elastic force of the return spring plate 14. As a result, the return spring plate 14 is separated from the operating portion 13a of the limit switch 13, so that the limit switch 13 is turned off. As a result, the reverse feed solenoid 44 stops and the cloth is fed forward.

  The case member 16 is provided with a reverse stitching operation body 12, a limit switch 13, a return spring plate 14, a cord 15, and the like. The case member 16 and the attachment plate 21 are assembled to the attachment plate 21 of the touch back switch 11. The nut 18 is screwed into the bolt 17 inserted into the connecting hole formed in each of the above.

Next, the attachment mechanism 22 will be described.
The attachment mechanism 22 includes a first position 21A where the reverse stitching operation body 12 is located in front of the staggered sewing machine M near the needle bar 5 near the jaw 6 of the arm portion 4, and the reverse stitching operation body 12 with respect to the first position 21A. Is provided so that the position of the mounting plate 21 can be switched over the second position 21B, which is a position away from the needle bar 5 in the vicinity of the jaw 6 of the arm 4.

  As shown in FIGS. 4 and 9, the attachment mechanism 22 includes two screw members 24 for attaching the attachment plate 21 to the machine frame 8, a flange portion 21a in a vertical posture at the rear end of the attachment plate 21, and a flange portion 21a. And a cam hole 21b formed in a substantially “ヲ” shape. The cam hole 21b includes a straight hole portion 21c and two arc cam hole portions 21d (curved portions) branched from the bent portion 21h of the straight hole portion 21c. The direction is changed.

  The cam hole 21b is formed so that the position of the mounting plate 21 can be switched over the first position 21A and the second position 21B. The touchback switch is attached by screwing the two plate members 24 into the two connecting holes formed in the machine casing 8 with the washers 25 inserted through the cam holes 21b. Fix to the machine frame 8 of the staggered sewing machine M.

  The screw member 24 has a head portion 24a having a diameter larger than that of the cam hole 21b and a shaft portion 24b having a shaft diameter substantially the same as that of the cam hole 21b, and the mounting plate 21 is fixed to the machine frame 8 by the screw member 24. In this case, the mounting plate 21 is prevented from rattling and the mounting plate 21 is prevented from falling off from the head 24a of the screw member 24.

  When the position of the mounting plate 21 is switched, the mounting plate 21 is moved along the cam hole 21b in a state where the two screw members 24 are loosened, and the two screw members 24 are tightened and attached at an arbitrary position. The plate 21 is fixed. When fixed to the position 21e in the cam hole 21b, the mounting plate 21 is switched to the first position 21A, and when fixed to the position 21f, it is switched to the second position 21B (see FIGS. 8 and 9). Further, the mounting plate 21 can be fixed not only at the positions 21e and 21f but also at an arbitrary position (for example, the position 21g), and at any intermediate position during the transition from the first position 21A to the second position 21B. The mounting plate 21 can be switched to the position. Here, in FIG. 4, the position 21e of the screw member 24 when the mounting plate 21 is at the first position 21A is indicated by a solid line, the position 21f of the screw member 24 when the attachment plate 21 is at the second position 21B is indicated by a two-dot chain line, A position 21g of the screw member 24 at an intermediate position between the first position 21A and the second position 21B is indicated by a three-dot chain line.

Next, the operation and effect of the mounting structure of the touchback switch 11 described above will be described.
When performing a sewing operation involving reverse stitching, the mounting plate 21 is moved so that the screw member 24 is positioned at the position 21e shown in FIG. 4 along the cam hole 21b with the two screw members 24 loosened. Thereafter, the screw member 24 is fastened and fixed to the machine casing 8. Then, as shown by a solid line in FIGS. 8 and 9, the mounting plate 21 is switched to the first position 21A. As a result, the reverse stitching operation body 12 is positioned in front of the staggered sewing machine M in the vicinity of the needle bar, so that it can be operated with little movement of the hand, and the operability of the touchback switch 11 during reverse stitching is improved.

  On the other hand, when performing a sewing operation not involving reverse stitching, the mounting plate 21 is placed so that the screw member 24 is positioned along the cam hole 21b at the position 21f shown in FIG. 4 with the two screw members 24 loosened. After the transition, the screw member 24 is fastened and fixed to the machine frame 8. Then, in FIGS. 8 and 9, the mounting plate 21 is switched to the second position 21 </ b> B as indicated by a two-dot chain line. Accordingly, since the reverse stitching operation body 12 is located at a position away from the needle bar 5 with respect to the first position 21A, it is possible to prevent the hand from interfering with the reverse stitching operation body 12 during the sewing operation, and the touchback switch 11 Incorrect operation can be prevented. In addition, the mounting plate 21 can be fixed not only at the first position 21A and the second position 21B but also so that the screw member 24 is positioned at an arbitrary position such as the position 21g shown in FIG. be able to. That is, since the mounting plate 21 can be fixed at a desired intermediate position between the first position 21A and the second position 21B, the touchback switch 11 can be switched to a position where the operator can easily work.

  Moreover, the attachment mechanism 22 includes two screw members 24 for attaching the attachment plate 21 to the sewing machine frame 8, a flange portion 21a in a vertical posture at the rear end of the attachment plate 21, and a cam hole 21b formed in the flange portion 21a. The cam 21 of the mounting plate 21 has the cam hole 21b that allows the mounting plate 21 to be switched over the first position 21A and the second position 21B in a state where the two screw members 24 are inserted. The mounting plate 21 can be moved in a state where the two screw members 24 are inserted into the holes 21b, and the position of the mounting plate 21 can be easily switched. Moreover, since position switching can be realized with a simple structure, the number of parts is not increased, which is advantageous in terms of cost.

  Further, the cam hole 21b is formed in a substantially “「 ”shape having a straight hole portion 21c and two arc cam hole portions 21d branched from the bent portion 21h of the straight hole portion 21c. Hole machining is simplified. In addition, since the position of the mounting plate 21 can be switched simply by moving the mounting plate 21 along the straight hole 21c and the arc cam hole 21d, the position switching operation of the touchback switch 11 is simplified.

Next, a modified example in which the above embodiment is partially modified will be described.
1) In the embodiment, the switch for inputting a command for performing a predetermined operation is the touchback switch 11 for inputting a command for reversing the cloth feeding direction, but other switches provided in the sewing machine M may be used. Often, a mirror reversing switch that inputs a command for reversing the embroidery pattern, a thread trimming switch that inputs a command for thread trimming operation, a start switch for inputting a command to automatically start sewing, or automatic sewing is stopped It may be a stop switch for inputting a command to be executed.

  2) In the embodiment, the cam hole 21b of the mounting mechanism 22 is composed of the straight hole portion 21c and the two arc cam hole portions 21d. For example, as shown in FIG. Alternatively, as shown in FIG. 11 and FIG. 12, cam holes 21k and 21m made only of the bent portions 21l and 21n may be used. As described above, even when the cam holes 21b, 21k, and 21m are formed in the shape of the curved portion 21j or the bent portions 21l and 21n so that the direction changes from one end to the other end, Hole drilling is simplified, and the switch position switching operation is simplified. The position of the screw member 24 when the mounting plates 21C to 21E are at the first position 21A is indicated by a solid line, and the position of the screw member 24 when the attachment plate 21C to 21E is at the second position 21B is indicated by a two-dot chain line.

  3) The mounting mechanism 22 may be configured such that the mounting plate 21 can be rotated about one of the two screw members 24 inserted through the cam hole 21b as a fulcrum. In this case, the position of the mounting plate 21 can be switched by simply rotating the mounting plate 21 to a desired position. Therefore, after loosening the screw member 24 and moving the mounting plate 21, the screw member 24 is tightened. A series of operations can be omitted.

4) In the embodiment, the two screw members 24 of the attachment mechanism 22 are provided. However, one or three screw members 24 may be provided, and the number of the screw members 24 can be changed. Accordingly, the number of arc cam hole portions 21d can be changed.
5) In addition, those skilled in the art can implement the present invention in a form in which various modifications are added, and the present invention includes such various modified forms.

It is a front view of the staggered sewing machine which attached the touchback switch by the switch attachment structure of the sewing machine of this invention. It is a left view of the zigzag stitch sewing machine to which the touchback switch is attached. It is a block diagram which shows the control system of the staggered sewing machine which attached the touchback switch. It is a front view of a switch mounting structure. It is a left view of a switch mounting structure. FIG. 6 is a view on arrow VI in FIG. 5. It is a VII arrow line view of FIG. It is a front view of the principal part of the zigzag stitch sewing machine which attached the touch back switch. It is a rear view of the principal part of the zigzag stitch sewing machine which attached the touch back switch. It is a front view of the principal part of the switch mounting structure which concerns on the example of a change. It is a front view of the principal part of the switch mounting structure which concerns on the example of a change. It is a front view of the principal part of the switch mounting structure which concerns on the example of a change.

Explanation of symbols

M Staggered sewing machine 3 Arm part 5 Needle bar 6 Jaw part 8 Sewing machine frame 11 Touch back switch (switch)
12 Reverse stitching operation body (operation unit)
13 Limit switch (switch part)
21, 21C, 21D, 21E Mounting plate 21A First position 21B Second position 21a Flange 21b, 21i, 21k, 21m Cam hole 21c Straight hole 21d, 21j Arc cam part (curved part)
21h, 21l, 21n Bending part 22, 22A, 22B, 22C Mounting mechanism 24 Screw member 44 Reverse feed solenoid (electric actuator)
45 Cloth feed mechanism (motion mechanism)

Claims (7)

In a switch mounting structure for inputting a command to perform a predetermined operation via an electric actuator connected to an operation mechanism of the sewing machine,
A mounting plate in which the switch part and the operation part of the switch are assembled;
The mounting plate includes at least a first position where the operation portion is located near the jaw portion of the arm portion and in front of the sewing machine near the needle bar, and the operation portion is located near the jaw portion of the arm portion with respect to the first position. An attachment mechanism which is attached to the sewing machine frame so as to be switchable over a second position which is a position separated from the needle bar;
A switch mounting structure for a sewing machine characterized by comprising: The mounting plate is formed in a substantially L shape in a side view,
The attachment mechanism is
A screw member for attaching the mounting plate to a sewing machine frame;
A flange portion in a vertical posture at the rear end of the mounting plate;
A cam hole formed in the flange portion, wherein the mounting plate can be switched between the first position and the second position in a state where the screw member is inserted;
The switch mounting structure for a sewing machine according to claim 1, comprising:   3. The sewing machine switch according to claim 2, wherein the cam hole is formed in a shape including at least one of a curved portion and a bent portion so that the direction of the cam hole changes from one end to the other end. Mounting structure.   3. The sewing machine according to claim 2, wherein the cam hole is formed in a substantially “ヲ” shape having a straight hole portion and two arc cam hole portions branched from the straight hole portion. Switch mounting structure.   The sewing machine switch according to claim 1 or 2, wherein the attachment mechanism is configured to be able to fix the attachment plate to an arbitrary intermediate position in the middle of the transition from the first position to the second position. Mounting structure.   The said operation | movement mechanism is a cloth feed mechanism, Comprising: The switch is a touchback switch which inputs the command which reverses a cloth feed direction as the said predetermined | prescribed operation | movement. Sewing machine switch mounting structure.   A sewing machine comprising the switch mounting structure for a sewing machine according to any one of claims 1 to 6.

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