KR810001398Y1 - Auxiliary table device in free-arm sewing machine - Google Patents

Abstract

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Description

Auxiliary table apparatus in free arm sewing machines

1 is a perspective view showing a state in which a sewing machine embodying the present invention is set in a flat bed shape.

2 is a perspective view showing a state in which the free arm is set.

Fig. 3 is a side view of the main portion broken in enlarged view of the sewing machine in Fig. 1;

Fig. 4 is a cutaway side view showing the state in which the connecting plate and the auxiliary plate are rotated in the state shown in Fig. 3;

5 is an enlarged side view showing the main part of the sewing machine in the state of FIG.

6 is a cross-sectional view taken along line 6-6 of FIG. 3;

FIG. 7 is a perspective view of the upper side of the sewing machine attached to the sewing machine in the state shown in FIG.

The present invention relates to an auxiliary table device in a free arm sewing machine, and its purpose is a free arm sewing machine which can be conveniently used by changing to a flat bed type sewing machine with a very simple operation as necessary. To provide an auxiliary table device in the.

Next, an example of means embodying the present invention will be described with reference to the drawings. ), The lower arm 12 which has the workpiece | work support surface 12a protrudes in the horizontal direction at the rear end side of the left side surface. (13) is a half moon zip cover attached to the front end of the lower arm (12) so that it can be opened and closed ( By opening and closing this half moon house cover 13, the bobbin case in which the bobbin for a bobbin thread was accommodated can be attached and detached in the said lower arm 12. As shown in FIG. (14) is a footnote formed following the base 11 to the rear end of the upper surface, and the upper arm 15 having the head 15a at the tip is protruded in the horizontal direction at the upper left side thereof. . (16) is a support plate fixed to the lower end of the base (11), and extends roughly parallel to the bottom of the lower arm (12) at regular intervals, the trailing edges and the left edges. 2 and 3, the lower arms 12 are positioned vertically below the rear edge and the left edge of the lower arm. Reference numeral 17 denotes a plurality of rubber support angles attached to a lower surface of the support plate 16, and the sewing machine configured as described above is shown in FIG. It is possible to mount on the surface S stably.

18 is a ridge formed in the upper surface of the support plate 16 below the lower arm 12, and as shown in FIG. 3, the inclination increases toward the front of the support plate 16. As shown in FIG. have. 19 is a recess formed in the upper front edge of the support plate 16 in front of the raised part 18, and is substantially the same height as the upper rear end of the support plate 16, as shown in FIG. It is formed lower than the shear edge of 18). 20 is a pair of through-holes formed through the left and right sides of the recessed portion 19 of the support plate 16 in the vertical direction. As shown in FIG. 6, the support shafts 22 are fixed to each other in the left and right directions by the pair of screws 21 as shown in FIG. (23) is a side crank-shaped clasp decoration which is rotatably supported around the said support shaft 22 in a pair of each leg 23a, As shown in FIGS. 3 and 6 at the tip of one corner portion 23a, a projection piece 23b extending roughly in the through hole 20 toward the other corner portion 23a in the horizontal direction. Each of these is bent.

(24) is a connecting plate fixed to the distal end of the two fasteners (23) by a pair of screws (25) on the inner surface of the proximal end, as is apparent from FIGS. 3 and 6, and the support shaft (22) is It is rotated about the center, and the position where the worker stands up vertically from the front edge of the support plate 16 as shown in FIGS. 1 and 3, and the front edge of the support plate 16 as shown in FIGS. 2 and 5 It is possible to take the fall position which extends roughly horizontally toward the worker side.

Reference numeral 26 is a pair of waves having a toggle action fixed to the rear surface of the support plate 16 by screws 27 at the lower end opening of the through hole 20 of the support plate 16. ) Springs, and as is apparent from FIGS. 3 to 6, the projections 23b of the attachable decoration 23 on the upper surfaces thereof are connected to each other, and the connecting plate 24 is When the rotational position shown in Fig. 4 is rotated beyond the rotational position shown in Fig. 4 to the side of the fallen position shown in Fig. 5, the connecting plate 24 is given a turning force toward the fallen position, and the connecting plate 24 is When it is rotated to the position position which rose beyond the rotation position shown in FIG. 4 at the fall position, it is made to provide the rotational force which goes to the position which rose to the connecting plate 24 in contrast to the case mentioned above. Reference numeral 28 is a rib formed in the outer periphery of the connecting plate 24 except for the proximal end of the connecting plate 24, and as shown in FIG. 6, a pair of penetrating through the left and right sides of the leading edge. At the same time, the holes 28a are formed, respectively, and a pair of attachment angles 28b are formed at the left and right ends of the leading edge, respectively.

Reference numeral 29 is an auxiliary plate formed in a roughly L-shaped plane by a long auxiliary plate portion 29a extending in the left and right directions and a short auxiliary plate portion 29b extending in the front and rear directions, and a pair of attachment angle portions protruding from the left and right sides of the front end of the back plate. As shown in Fig. 6, support pins 31, which are regrettable, are attached to the angle of attachment 28b at the tip of the connecting plate 24, as shown in FIG. Therefore, this auxiliary plate 29 is rotated about the support pin 31, and when the connecting plate 24 is placed in the upright position as shown in FIGS. 1 and 3, the lower arm 12 In the upper position approaching the front end and the left end of the upper part of the lower part, and as shown in Figs. 2 and 5, when the connecting plate 24 is placed in the fallen position, the lower part overlapped on the connecting plate 24 Take a position.

Denoted at 32 is a position correction recess formed in the upper left of the lower arm 12, and is open toward the upper side and the left side as shown in FIG. 2 and FIG.

Reference numeral 33 denotes a crystal pin protruding from the right side of the short subplate portion 29b of the subplate 29 so as to fit into the positioning recess 32. As shown, when the auxiliary plate 29 is placed in the upper position, the auxiliary plate 29 fits into the positioning recess 32 so that the upper surface of the auxiliary plate 29 is placed on the workpiece support surface 12a of the lower arm 12 and on the front and left sides thereof. Therefore, it is supposed to maintain the same plane.

(34) is a positioning end projecting to the proximal front surface of the lower arm 12 as evident in FIG. 2, and as shown in FIGS. 1 and 3, when the auxiliary plate 29 is placed in the upper position, The right end of the auxiliary plate portion 29a is supported. Therefore, when the connecting plate 24 is placed in the upright position and the auxiliary plate 29 is in the upper position as shown in FIGS. 1 and 3, the upper surface of the auxiliary plate 29 is the lower arm 12. It is held on the same plane as the work piece support surface 12a of), and can be conveniently used as an ordinary flat bed sewing machine by the cooperation of both 29 and 12. In this state, since the auxiliary plate 29 is pressed downward toward the rear side by the action of the pair of leaf springs 26 provided in the support plate 16, the auxiliary plate 29 and the lower arm 12 A gap does not arise in a joining part, and the auxiliary board 29 does not move freely during operation of a sewing machine.

35 is a positioning recess formed in the left side of the support plate 16, corresponding to the positioning pin 23 on the auxiliary plate 29, and the auxiliary plate 29 as shown in FIGS. The positioning pin 33 fits into this positioning recess 35 when it is placed in this lower position and the rear edge of the long auxiliary plate portion 29a is supported on the recess 19 in front of the support plate 16. In addition, the upper surface of the auxiliary plate 29 is cooperatively formed with the recess 19 to hold the upper surface of the support plate 16 in a state substantially constituting the same surface. Therefore, as shown in Figs. 2 and 5, when the connecting plate 24 is in a fallen state and the auxiliary plate 29 is placed in a lower position, the both plates 24 and 29 are piled up toward the worker side. It is kept folded and can be used conveniently as a free arm type sewing machine. In this state, since the auxiliary plate 29 is pressed downward by the action of the pair of leaf springs 26 provided in the support plate 16, the auxiliary plate 29 moves freely during the operation of the sewing machine. It can be used in a stable state.

Reference numeral 36 denotes a plurality of rubber support angles protruding from the rear corners of the auxiliary plate 29, and the two support angles 36 provided at the proximal end are ribs on the rear surface of the connecting plate 24 as shown in FIG. Corresponding to the pair of through holes 28a formed on the 28, respectively, and can pass through the through hole 28 during the relative rotation of the connecting plate 24 and the auxiliary plate 29. At the same time, the connecting plate 24 and the auxiliary plate 29 are connected to the support surface S, such as a table, as shown in FIG. It can be stably mounted on the support surface S.

Reference numeral 37 is a cover in which the lower surface mounted from the upper side of the sewing machine constructed as described above is open, and as shown in FIG. 7, the auxiliary plate 29 is in the state of the flatbed sewing machine held in the upper position. It is to cover roughly the entire sewing machine except the support plate 16. 38 is a portable handle rotatably attached to the upper arm 15 of the sewing machine. When the sewing machine is operated, the handle 38 is folded rearward of the upper arm 15 as indicated by the solid line in FIG. When transporting the sewing machine, as shown by the dashed line in FIG. 7, the upper machine 15 stands on the upper arm 15 through the through hole 37 formed in a part of the cover 37, and covers the entire sewing machine. ) Can be transported with.

The operation of the sewing machine constructed in this way will be described next.

1 and 3 show the state of use of the flatbed sewing machine in which the connecting plate 24 is placed in the upright position and the auxiliary plate 29 is in the up position. In this state, in particular, as is apparent from FIG. 3, the fitting recess 32 is formed on the lower arm of the positioning pin 33 protruding from the auxiliary plate 29, and the right rear end of the auxiliary plate 29 is provided. Since it is supported on the additional positioning end 34, the upper surface of the auxiliary plate 29 is maintained to be flush with the workpiece support surface 12a of the lower arm 12 and in the front and left sides thereof. Since the 29 is crimped by the action of the pair of leaf springs 26 provided in the support plate 16, the rear lower part is pressed, so that a gap does not occur at the junction between the auxiliary plate 29 and the lower arm 12. During operation of the sewing machine, the auxiliary plate 29 does not move freely. Therefore, in the state of the flatbed sewing machine, a part of the worker's hand or the workpiece is not caught at the junction between the auxiliary plate 29 and the lower arm 12, and the workpiece support surface 12a of the lower arm 12 and Using a large working area of the entire upper surface of the flat roughly L-shaped auxiliary plate 29, sewing can be performed safely and conveniently.

Next, in the case of changing from the state of the flatbed sewing machine to the state of the free arm sewing machine, as shown in FIGS. 1 and 3, the left rear end of the auxiliary plate 29 in the upper position is lifted upward and connected. When the plate 24 falls and rotates to the worker side in response to the action of the plate spring 26, when the connecting plate 24 exceeds the rotation position shown in FIG. The direction of action of 26 is reversed, and the connecting plate 24 is automatically rotated to the fallen position shown in FIG. 5 by the action of the leaf spring 26. Thereafter, when the auxiliary plate 29 is rotated and folded to overlap with the connecting plate 24 in the fallen position as shown in FIGS. 2 and 5, the positioning pin 33 protruding from the auxiliary plate 29 While fitting to the positioning recesses 35 formed on the support plate 16, the trailing edge of the long auxiliary plate portion 29a of the auxiliary plate 29 is supported on the recessed portion 19 in front of the support plate 16, and the auxiliary plate 29 is provided. The upper surface of is maintained to be roughly the same surface as the upper surface of the support plate (16). In this state, therefore, the upper side of the supporting plate 16 of the auxiliary plate 29 does not stand upward and does not interfere with the sewing operation, and can be conveniently used as a pre-arm sewing machine. There is no fear that a worker's hand or a part of a workpiece may be caught in the junction part with the support plate 16, and sewing can be performed safely. In this state, the auxiliary plate 29 is pressed downward by the action of the leaf spring 26 and a plurality of rubber supporting angles 36 protruding from the lower surface of the auxiliary plate 29. Is attached to supporting surfaces S such as a table, so that the auxiliary plate 29 does not move freely during the operation of the sewing machine, and can be used stably.

Moreover, when changing from the state of this free arm type sewing machine to the state of the flatbed sewing machine, as shown in FIG. 2 and FIG. 5, the left rear part of the auxiliary plate 29 located in the lower position is lifted upwards, When 24 is rotated by standing against the action of the leaf spring 26, the direction of action of the leaf spring 26 is reversed when the connecting plate 24 is beyond the rotational position shown in FIG. The connecting plate 24 is automatically rotated to the rising position shown in FIGS. 1 and 3 by the action of the leaf spring 26. Then, the auxiliary plate 29 is rotated to fit the positioning pin 33 protruding from the auxiliary plate 29 into the positioning recess 32 formed in the lower arm 12 as shown in FIGS. 1 and 3. , The upper surface of the auxiliary plate 29 is disposed on the same surface as the workpiece support surface 12a of the lower arm 12 to be in the state of the flatbed sewing machine described above.

The lower thread may be In order to replace the book for), as shown in FIG. 2 and FIG. 5, the connecting plate 24 and the auxiliary plate 29 are folded to the operator's side to form a free arm type sewing machine, and the front left end of the lower arm 12 By opening the half moon house cover 13, the drum can be easily taken out together with the north house. Moreover, after using the sewing machine, the state of the flatbed sewing machine is set as shown in FIG. 7, and the cover 37 is mounted on the upper part of the sewing machine, and the entire sewing machine is covered by the cover 37. As indicated by the dashed lines, the handle 38 on the upper arm 15 can be raised to easily transport the sewing machine together with the cover 37. And in this embodiment, the lower arm 12 protrudes toward the rear end of the left side of the base 11, and the rear end edge is comprised so that it may be located in the vertical upper part of the rear end edge of the support plate 16, and at the same time flat bed type Since the front surface of the auxiliary plate 29 is configured to be flush with the front surface of the base 11 in the state of the sewing machine, the entire sewing machine can be completely covered by using a relatively small cover 37.

As is clear from the above description, the present invention has various excellent effects as follows.

(1) In the present invention, when the connecting plate pivotably connected to the end of the support tube is rotated to the upright position and the auxiliary plate pivotably attached to the distal end of the connecting plate is set at the upper position approaching the lower arm, When the arm and the auxiliary plate cooperate with each other to form a flatbed sewing machine and rotate the connecting plate to the fallen position, the auxiliary plate is set in a lower position so as to overlap the connecting plate, and the two arms are folded. Since it is configured to be in the state of the type sewing machine, unlike the configuration of attaching and detaching the auxiliary plate in front of the lower arm of the free arm type sewing machine, there is no fear that the auxiliary plate will be lost, and by a very simple one-handed operation as necessary. It can be used conveniently by changing to a flat bed type or a free arm type.

(2) The present invention is designed such that the upper surface of the auxiliary plate is disposed on the same plane as the work piece supporting surface of the lower arm when set in the state of the flatbed sewing machine by the positioning means provided between the auxiliary plate and the lower arm. As a result, the auxiliary plate is safely maintained in that state, and a part of the worker's hand or the workpiece can be safely used at the junction between the auxiliary plate and the lower arm, and can be used safely.

(3) In the present invention, since the tip is supported by the recess formed in the support plate in the state of the free-ear type sewing machine, the upper surface of the auxiliary plate is configured to be disposed on substantially the same surface as the upper surface of the support plate. Although it is always attached to a part of the sewing machine, it does not interfere with the sewing worker, and there is no fear of catching a part of the worker's hand or the workpiece at the joint between the auxiliary plate and the support plate, and can be used safely.

In addition, the present invention is not limited to the above-described embodiment, but can also be configured as follows.

(1) The connecting plate of the present invention does not necessarily need to be composed of one plate-like one, and for example, the pair of mounting brackets 23 in the above-described embodiment is extended upward to form the connecting plate. And attaching the auxiliary plate 29 to the upper end of the connecting plate portion so as to be rotatable.

In addition, in the case where the connecting plate 24 is configured as a single plate like the above embodiment and attached to the front end of the supporting plate 16, as shown in FIG. 1, the connecting plate 24 is set in the state of a flat bed sewing machine. At that time, the front side of the sewing machine is covered by the connecting plate 24, showing the elegant appearance of the box-shaped flat bed,

(2) In addition to the positioning pin 33 and the position connecting recess 32 of the above-described embodiment, the positioning means in the present invention may be configured in various ways, or on the side of the auxiliary plate 29 as opposed to the above-described embodiment. And forming a position connecting recess and projecting the position connecting pin on the lower arm 12 side.

(3) In the present invention, the connecting plate and the auxiliary plate need not be configured to fold forward of the support plate 16, and for example, constitute the left side of the support plate 16.

Claims (1)

A base having a lower arm which extends in the horizontal direction and constitutes the workpiece support surface as shown in the drawings and described above in the text. ), An upper arm extending in the horizontal direction and having a head formed at an end thereof, a footnote extending upwardly following the base, and a lower part of the lower arm installed below the base. In a pre-arm sewing machine composed of a support plate extending in the form, a proximal end is rotatably connected to an end of the support plate, at least in a fallen position positioned in an extension direction of the support plate, and a position rising from the end of the support plate. A connecting plate which is rotatable between and a lower position which is pivotably attached to the distal end of the connecting plate and overlaps on the connecting plate in the fallen position, and an upper position approaching the lower arm in the rising position. And an upper plate of the auxiliary plate, wherein the upper surface of the auxiliary plate and the workpiece support surface of the lower arm Positioning means provided between the auxiliary plate and the lower arm so as to maintain one surface, and at the lower position of the auxiliary plate, the upper surface is formed on the support plate such that the upper surface is roughly the same as the upper surface of the support plate. An auxiliary table device in a free arm sewing machine comprising a recess.