Sewing machine and wide table attached to sewing machine

Abstract

To provide a sewing machine and a wide table attached to the sewing machine which improve convenience in sewing an object to be sewn larger than a bed surface.SOLUTION: The bed 10 of the sewing machine 1 is provided with the bed surface 110, the first side plates 111 and 113, the second side plate 121, the first mount portion 130, and the second mount portion 131. The first side plates 111 and 113 extend downward from the outer periphery 19 of the bed surface 110 and intersect the longitudinal direction D2 portion of the bed surface 110. The second side plate 121 extends downward from the outer periphery 19 of the bed surface 110, and intersects the D1 portion in the short direction of the bed surface 110. The first attachment portions 130 are provided on the first side plates 111 and 113, and an auxiliary device having a first extension surface that extends in the horizontal direction can be attached to the first attachment portions 111. The second attachment portion 131 is a wide table that has a second extension surface that extends in the horizontal direction, can be attached to a wide table that has a different shape from the auxiliary device, and is provided on the second side plate 121.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a sewing machine and a wide table attached to the sewing machine. [Background technology]

[0002] A conventional embroidery device cover includes a flat surface, an engaging portion, support legs, a peripheral wall portion, and a locking portion. The flat surface, when attached to the sewing machine, is integrated with the bed and free arm to form a substantially horizontal surface. The engaging portion engages with the sewing machine. The support legs are movable between a substantially vertical position and a substantially horizontal position, supporting the main body in the substantially vertical position and covering the embroidery device in the substantially horizontal position. The peripheral wall portion, when attached to the embroidery device, covers the transfer mechanism and slits to protect them from dust and the like. The locking portion locks onto the embroidery device. The embroidery device cover can be used as an auxiliary table when attached to the sewing machine, and can also be used as an embroidery device cover when attached to the embroidery device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-011750 A Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for sewing various sizes of workpieces even when an embroidery device or an auxiliary table is attached, as with conventional sewing machines. However, conventional sewing machines may be inconvenient when sewing workpieces that are larger than the bed surface.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing machine and a wide table to be attached to the sewing machine which are more convenient than conventional sewing machines when sewing an item that is larger than the bed surface. [Means for solving the problem]

[0006] A sewing machine according to a first aspect of the present invention includes a bed having a bed surface extending horizontally perpendicular to the up-down direction, a first side panel extending downward from the outer periphery of the bed surface and intersecting the longitudinal direction of the bed surface, a second side panel extending downward from the outer periphery of the bed surface and intersecting the lateral direction of the bed surface, a first mounting portion provided on the first side panel to which an auxiliary device having a first expansion surface extending horizontally can be attached, and a second mounting portion provided on the second side panel to which a wide table having a second expansion surface extending horizontally and having a shape different from that of the auxiliary device can be attached. The sewing machine of the first aspect contributes to attaching the auxiliary device to the first mounting portion and the wide table to the second mounting portion. In other words, the wide table can be attached to the sewing machine with the auxiliary device attached, contributing to expanding the bed surface using the second expansion surface of the wide table. Therefore, the second attachment portion of the sewing machine allows the user to freely expand the surface on which the sewing item is placed when sewing an item that is larger than the bed surface, thereby contributing to improved convenience when sewing an item that is larger than the bed surface.

[0007] A wide table according to a second aspect of the present invention is a wide table attached to a sewing machine, and includes a table board having a table surface extending in a horizontal direction perpendicular to the up-down direction, legs connected to the table board, and a lever protruding in an insertion direction, which is one of the shorter sides of a bed surface of the sewing machine extending in the horizontal direction, and when one of the longer sides of the bed surface is defined as a first direction and the other as a second direction, the lever has a hook protruding in the first direction, and is supported by the table board so as to be rotatable between a normal position and a detachable position in which the hook is positioned in the second direction from the normal position. The sewing machine includes a lever extending downward from the outer periphery of the bed surface, inserted in the insertion direction through an opening formed in a side panel intersecting the short direction, and then pivoting from the detachable position to the normal position so that the hook engages with a mounting portion including an engaging edge that defines the opening of the sewing machine; and an unlocking member connected to the lever and supported on the table plate so as to be movable from a first position to a second position, the unlocking member pivoting the lever from the normal position to the detachable position when moved from the first position to the second position to release the engagement between the hook and the mounting portion. The wide table attached to the sewing machine can be attached to the bed when sewing a workpiece larger than the bed surface, allowing the workpiece to be supported by both the bed and the wide table, thereby contributing to easier sewing than conventional sewing machines. The wide table is detachably attached to the bed, contributing to the ability to switch between using the wide table and not using it depending on the size of the workpiece. Therefore, compared to a wide table that is not detachable from the bed of the sewing machine, the wide table contributes to achieving both a more compact sewing machine and improved ease of sewing relatively large items.The lever of the wide table contributes to making the operation of engaging the lever with the opening a relatively simple operation of rotating the lever from the detachable position to the normal position.The unlocking member of the wide table contributes to making the operation of rotating the lever from the normal position to the detachable position a relatively simple operation of moving the unlocking member from the first position to the second position. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the sewing machine 1 to which the wide tables 3 and 7 and the embroidery device 140 are attached. [Figure 2] FIG. 2 is a perspective view of the sewing machine 1 to which the wide tables 3 and 7 and the embroidery device 140 are attached. [Figure 3] FIG. 2 is a perspective view of the sewing machine 1 with the wide tables 3, 7 and the embroidery device 140 removed. [Figure 4] FIG. 2 is a left side view of the sewing machine 1 with the wide tables 3, 7 and the embroidery device 140 removed. [Figure 5] FIG. 2 is a perspective view of an embroidery device 140. [Figure 6] 2 is a perspective view of the machine frame 50 on the rear side of the sewing machine 1. FIG. [Figure 7] 2 is a perspective view of the machine frame 50 on the rear side of the sewing machine 1. FIG. [Figure 8] 7A is an enlarged cross-sectional view taken along line 8-8 in FIG. 7 when cover 62 is in a blocking position blocking opening 65, and FIG. 7B is an enlarged cross-sectional view taken along line 8-8 in FIG. 7 when cover 62 is in an opening position opening opening 65. [Figure 9] FIG. [Figure 10] (A) is a bottom view of the wide table 3 when the unlocking member 45 is in the first position, the first lever 35 is in the first normal position, and the second lever 34 is in the second normal position, and (B) is a bottom view of the wide table 3 when the unlocking member 45 is in the second position, the first lever 35 is in the first detachable position, and the second lever 34 is in the second detachable position. [Figure 11] 1 is a rear view of the sewing machine 1 with the wide table 3 attached to the machine frame 50 on the rear side thereof. [Figure 12](A) is a bottom view of the wide table 3 when the unlocking member 45 is in the first position, the first lever 35 is in the first normal position, and the second lever 34 is in the second normal position, corresponding to the cross-sectional view taken along the line 12-12 in Figure 11, and (B) is a bottom view of the wide table 3 when the unlocking member 45 is in the second position, the first lever 35 is in the first detachable position, and the second lever 34 is in the second detachable position, corresponding to the cross-sectional view taken along the line 12-12 in Figure 11. [Figure 13] FIG. [Figure 14] (A) is a bottom view of the wide table 7 when the unlocking member 90 is in the first position, the lever 84 is in the normal position, and the legs 81, 82 are in the storage position, (B) is a bottom view of the wide table 7 when the unlocking member 90 is in the first position, the lever 84 is in the normal position, and the legs 81, 82 are in the use position, and (C) is a bottom view of the wide table 7 when the unlocking member 90 is in the second position, the lever 84 is in the detachable position, and the legs 81, 82 are in the use position. [Figure 15] FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. 14(B). [Figure 16] (A) is an oblique view of the sewing machine 1 equipped with the wide table 3 and the auxiliary device 170, (B) is an oblique view of the sewing machine 1 equipped with the wide table 3 and the embroidery device 140, and (C) is an oblique view of the sewing machine 1 equipped with the wide table 3 and the auxiliary device 200. [Figure 17] FIG. 1 is a perspective view of an auxiliary device 170. [Figure 18] FIG. 2 is a perspective view of the auxiliary device 200. [Figure 19] 2 is a block diagram showing the electrical configuration of the sewing machine 1 to which the embroidery device 140 is attached. FIG. [Figure 20] 10 is a flowchart of a main process. [Figure 21] FIG. 10 is a perspective view of a wide table 500 according to a first modified example. [Figure 22](A) is a bottom view of the wide table 500 when the unlocking member 58 is in the first position, the lever 59 is in the normal position, and the legs 541, 542 are in the storage position, (B) is a bottom view of the wide table 500 when the unlocking member 58 is in the first position, the lever 59 is in the normal position, and the legs 541, 542 are in the use position, and (C) is a bottom view of the wide table 500 when the unlocking member 58 is in the second position, the lever 59 is in the detachable position, and the legs 541, 542 are in the use position. [Figure 23] 23(B) is a cross-sectional view taken along line 23-23 in FIG. 22(B). [Figure 24] FIG. 10 is a perspective view of the sewing machine 1 to which a wide table 600 of a second modified example is attached. DETAILED DESCRIPTION OF THE INVENTION

[0009] A sewing machine 1 according to an embodiment of the present invention will be described in order with reference to the drawings. The physical configuration of the sewing machine 1 equipped with an embroidery device 140 will be described with reference to FIGS. 1 to 18. The up-down direction, the lower right side, the upper left side, the lower left side, and the upper right side in FIG. 1 correspond to the up-down direction, the front, the rear, the left, and the right, respectively, of the sewing machine 1 equipped with the embroidery device 140. The longitudinal direction D2 of the bed 10 and the arm 13 corresponds to the left-right direction of the sewing machine 1. The lateral direction D1 of the bed 10 and the arm 13 corresponds to the front-to-rear direction of the sewing machine 1. The side on which the leg column 11 is located is the right side. The extension direction of the leg column 11 corresponds to the up-down direction of the sewing machine 1. One of the longitudinal directions D2 is defined as a first direction N1, and the other as a second direction N2. In this embodiment, the first direction N1 is the right side, and the second direction N2 is the left side. One of the lateral directions D1 corresponds to the insertion direction K1 of the wide table 3. The other of the short sides D1 is the removal direction K2 of the wide table 3. One of the short sides D1 is the insertion direction J1 of the wide table 7. The other of the short sides D1 is the removal direction J2 of the wide table 7. In this embodiment, the removal direction K2 of the wide table 3 and the insertion direction J1 of the wide table 7 are rearward. In this embodiment, the insertion direction K1 of the wide table 3 and the removal direction J2 of the wide table 7 are forward.

[0010] As shown in Figures 1 and 2, the sewing machine 1 includes a bed 10, a leg post 11, an arm 13, a head 14, an embroidery device 140, and wide tables 3 and 7. The bed 10 is a base of the sewing machine 1 that extends in the left-right direction. The leg post 11 stands upright from the right end of the bed 10. The arm 13 extends leftward from the upper end of the leg post 11, facing the bed 10. The head 14 is connected to the left end of the arm 13.

[0011] The bed 10 has a needle plate 28 on the bed surface 110. The needle plate 28 has a needle eye 18 formed therein, through which a sewing needle 4 (described later) can be inserted. The sewing machine 1 has, within the bed 10, a feed dog 17, a feed mechanism (not shown), a shuttle mechanism, etc. The feed dog 17 is driven by the feed mechanism during normal sewing, not embroidery sewing, to move the workpiece a predetermined distance in a forward feed direction or a reverse feed direction. In this example, the forward feed direction is backward, and the reverse feed direction is forward. The shuttle mechanism entangles the upper thread (not shown) with the bobbin thread below the needle plate 28.

[0012] 2 to 4, the bed 10 comprises a base 101 connected to the leg post 11, and a free arm 102 extending leftward from approximately the center of the left end of the base 101. The length of the free arm 102 in the front-to-rear direction is shorter than the length of the base 101 in the front-to-rear direction. The height of the top surface of the base 101 and the height of the top surface of the free arm 102 are the same.

[0013] The bed 10 includes a bed surface 110, first side plates 111 and 113, plates 112, 114 to 116, second side plates 121 and 122, a first mounting portion 130, a connecting portion 133, and second mounting portions 131 and 132. The bed surface 110 is the top surface of the bed 10 and extends horizontally, perpendicular to the up-down direction. The bed surface 110 is composed of the top surface of the base 101 and the top surface of the free arm 102. The needle plate 28 is disposed on the top surface of the free arm 102. The first side plates 111 and 113 extend downward from the outer periphery 19 of the bed surface 110 and intersect with the longitudinal direction D2 of the bed surface 110. In this example, the first side plates 111 and 113 are perpendicular to the longitudinal direction D2 of the bed surface 110. The first side plate 111 is U-shaped when viewed from the left side and forms the left surface of the base 101. The first side plate 113 has a rectangular shape when viewed from the left side, and constitutes the left surface of the free arm 102. The first side plate 111 is located between the first side plate 113 and the leg post 11 in the longitudinal direction D2.

[0014] The first mounting portion 130 is provided on the first side plate 111, 113 and is adapted to mount an auxiliary device having a first expanding surface that extends horizontally. The auxiliary device is, for example, an embroidery device 140 having a first expanding surface 139. The first mounting portion 130 includes edges 159, 160, 156, and 162. The edge 159 defines an engagement hole 119. The edge 160 defines an engagement hole 120. The edges 159, 160 are aligned in the front-to-rear direction behind the free arm 102 of the first side plate 111 and above the center of the first side plate 111 in the up-down direction. The edge 156 defines an engagement hole 155. The edge 156 is provided on the first side plate 111 forward of the free arm 102. The edge 156 is located below the connecting portion 133. The edge 162 defines an engagement hole 161 formed in the left surface of the free arm 102 .

[0015] The connection portion 133 is provided on the first side plate 111, forward of the free arm 102 and above the edge 156. The connection portion 133 has a connector therein that electrically connects with the connector 49 of the embroidery device 140 shown in FIG. 5. The connector is provided to control the operation of the embroidery device 140. The connection portion 133 includes an edge 157 and a cover 118. The edge 157 defines an opening 117 provided in front of the free arm 102. The cover 118 closes the opening 117 when the embroidery device 140 is not attached to the bed 10.

[0016] Plate 112 forms the front surface of free arm 102. Plate 114 forms the back surface of free arm 102. Plate 115 forms the lower surface of free arm 102. Plate 116 extends horizontally below free arm 102.

[0017] The second side plates 121, 122 extend downward from the outer periphery 19 of the bed surface 110 and intersect with the short-side direction D1 of the bed surface 110. The second side plates 121, 122 have curved surfaces that are approximately perpendicular to the short-side direction D1 of the bed surface 110. The second side plate 121 forms the front surface of the base 101. The second side plate 122 forms the back surface of the base 101.

[0018] 2, the second mounting portion 132 can mount a wide table 3 having a different shape from the auxiliary device mounted on the first mounting portion 130. As will be described in detail later, the wide table 3 has a second expansion surface 32 that expands in the horizontal direction. The second mounting portion 132 is provided on the second side panel 122.

[0019] 6 and 7 show the machine frame 50 on the rear side of the sewing machine 1, and includes an arm plate 51, leg pillar plates 52 and 56, a head plate 53, a second side plate 122, a portion of the first side plate 111, and plates 114 and 115. The arm plate 51 forms the rear and bottom surface of the arm 13. The leg pillar plate 52 forms the rear surface of the leg pillar 11. The leg pillar plate 56 forms the left surface of the leg pillar 11. The head plate 53 forms the rear and bottom surface of the head 14.

[0020] As shown in FIGS. 6 to 8(B), the second mounting portion 132 is provided between the first mounting portion 130 and the leg post 11 in the longitudinal direction D2. The second mounting portion 132 includes an engagement edge 66, a mounting plate 61, a cover 62, and a spring 64. The engagement edge 66 defines an opening 65 formed in the second side plate 122. The engagement edge 66 has a rectangular shape that is elongated in the left-right direction when viewed from behind. The engagement edge 66 is located in the center of the second side plate 122 in the left-right direction. The mounting plate 61 is an inverted U-shaped plate when viewed from the front, and is fixed to the front surface of the second side plate 122 around the engagement edge 66 with screws 611 and 612. The cover 62 closes the opening 65 when the wide table 3 is not attached to the bed 10. The cover 62 is supported by the bed 10 so as to be rotatable about a pivot shaft 63 provided at the lower end of the cover 62 between a closed position shown in FIG. 8(A) where the opening 65 is closed and an open position shown in FIG. 8(B) where the opening 65 is open. As shown in FIG. 8(A), when the cover 62 is in the closed position, the cover 62 extends upward from the pivot shaft 63, and the back surface of the cover 62 abuts against an engagement edge 66. As shown in FIG. 8(B), when the cover 62 is in the open position, the cover 62 extends obliquely upward and forward from the pivot shaft 63 and is positioned below the lower end of the engagement edge 66. The spring 64 is a wire-shaped finely worked spring. One end of the spring 64 is fixed to the second side panel 122 below the cover 62. The other end of the spring 64 abuts against the front surface of the cover 62. The spring 64 biases the cover 62 in a direction from the open position toward the closed position, that is, counterclockwise when viewed from the left side.

[0021] 1, the second mounting portion 131 can mount a wide table 7 that has a different shape from the auxiliary device mounted on the first mounting portion 130. As will be described in detail later, the wide table 7 has a second expansion surface 72 that expands in the horizontal direction.

[0022] As shown in FIG. 3 , the second mounting portion 131 is provided on the second side panel 121. The second mounting portion 131 includes an engagement edge 68 that defines an opening 67 formed in the second side panel 121. The engagement edge 68 has a rectangular shape that is elongated in the left-right direction when viewed from the front. The engagement edge 68 is located in the left-right central portion of the second side panel 121. The second mounting portion 131 is provided between the first mounting portion 130 and the leg post 11 in the longitudinal direction D2. The second mounting portion 131 has a configuration similar to that of the second mounting portion 132 and includes a mounting plate, a cover 69, and a spring (not shown). The cover 69 covers the opening 67 when the wide table 7 is not attached to the bed 10. The cover 69 is supported on the bed 10 so as to be rotatable about a rotation axis provided at the bottom of the cover 69 between a closed position that covers the opening 67 and an open position that opens the opening 67. The spring biases the cover 69 in a direction from the open position toward the closed position, that is, clockwise when viewed from the left side.

[0023] As shown in FIG. 1, the leg pillar 11 extends vertically and is connected to the right end of the bed 10. The leg pillar 11 includes a sewing machine motor 25 (shown in FIG. 19) inside. An LCD 21 is provided on the front of the leg pillar 11. The LCD 21 displays images containing various items such as commands, illustrations, setting values, and messages. A touch screen 26 capable of detecting a pressed position is provided on the front side of the LCD 21. When a user presses the touch screen 26 with a pointing device such as a finger or a stylus pen, the touch screen 26 detects the pressed position. The control unit 2 of the sewing machine 1 shown in FIG. 19 recognizes the selected item in the image based on the detected pressed position. Hereinafter, the user's pressing operation on the touch screen 26 will be referred to as a panel operation. By operating the panel, the user can select a sewing pattern to be sewn, commands to be executed, and the like.

[0024] An openable and closable cover 16 is provided on the upper part of the arm 13. FIG. 1 shows the state in which the cover 16 is closed. A main shaft (not shown) is provided inside the arm 13. The main shaft extends in the left-right direction and is driven to rotate by a sewing machine motor 25. Various switches including a start / stop switch 29 are provided on the lower left front side of the arm 13. The start / stop switch 29 is used by the user to start or stop the operation of the sewing machine 1, i.e., to input a command to start or stop sewing.

[0025] The head 14 is provided with a needle bar 6, a presser bar 5, etc. The needle bar 6 extends in the vertical direction. The needle bar 6 is located above the needle eye 18. A sewing needle 4 is removably attached to the lower end of the needle bar 6. The needle bar 6 is driven in the vertical direction by the rotation of the main shaft. A presser foot 9 is removably attached to the lower end of the presser bar 5. The presser foot 9, together with the presser bar 5, is movable between a lowered position where it presses down on the material to be sewn, and an elevated position where it is retracted upward from the lowered position, i.e., away from the material to be sewn. The presser foot 9 intermittently presses down on the material to be sewn in conjunction with the up and down movement of the needle bar 6.

[0026] The embroidery device 140 is an auxiliary device that can be attached to the first attachment portion 130 of the bed 10, and has a holder 143 that can move horizontally and that can accommodate an embroidery frame 150. The embroidery device 140 has the holder 143 to which the embroidery frame 150, which holds the workpiece, can be detachably attached, and is configured to move the holder 143 back and forth and left and right relative to the needle bar 6. The embroidery device 140 can be attached with one embroidery frame selected from a plurality of embroidery frames including the embroidery frame 150. The embroidery frame 150 has a first frame 151 and a second frame 152, and the first frame 151 and the second frame 152 can sandwich the sheet-like workpiece. The workpiece is, for example, a workpiece cloth.

[0027] As shown in FIG. 5 , the embroidery device 140 includes a main body 141, engaging claws 46 and 47, a connector 49, a carriage 142, and a holder 143. The main body 141 is rectangular with its longitudinal direction extending in the left-right direction. The front-rear length of the main body 141 is longer than the front-rear length of the bed 10. The left-rear length of the main body 141 is longer than the left-rear length of the free arm 102 of the bed 10. The main body 141 has a recess 148 recessed leftward from the center in the front-rear direction on a right surface 149 of the main body 141. A cylindrical engaging protrusion 138 protruding rightward is provided on a left surface 137 of the recess 148. When the embroidery device 140 is attached to the bed 10, the engaging protrusion 138 is inserted into an engaging hole 161 of the bed 10 and removably engages with the first attachment portion 130, more specifically, the first side panel 113. When the embroidery device 140 is attached to the first attachment portion 130 , the free arm 102 of the bed 10 is disposed in the recess 148 .

[0028] The main body 141 has a first expansion surface 139 that extends horizontally. The first expansion surface 139 is the upper surface of the main body 141. When the embroidery device 140 is attached to the first attachment portion 130, the first expansion surface 139 is flush with the bed surface 110. The main body 141 includes an X-movement mechanism 146 and an X-motor 144 therein, as shown in FIG. 19. The X-movement mechanism 146 moves the carriage 142 left and right, i.e., in the X-direction. The X-motor 144 drives the X-movement mechanism 146.

[0029] The engagement claws 46, 47 protrude rightward from a right surface 149 of the main body 141, rearward of the recess 148. The engagement claws 46, 47 are aligned in the front-to-rear direction. When the embroidery device 140 is attached to the bed 10, the engagement claw 46 is inserted into the engagement hole 119 and removably engages with the first attachment portion 130, more specifically, the first side plate 111. The engagement claw 47 of the embroidery device 140 is inserted into the engagement hole 120 and removably engages with the first attachment portion 130, more specifically, the first side plate 111.

[0030] The connector 49 protrudes rightward from the right surface 149, forward of the recess 148. When the embroidery device 140 is attached to the bed 10, the connector 49 electrically connects to a connector provided inside the connection portion 133.

[0031] The carriage 142 includes a holder 143, a Y movement mechanism 147 shown in FIG. 19, and a Y motor 145. The holder 143 is provided on the right side of the carriage 142. The Y movement mechanism 147 moves the holder 143 in the front-to-rear direction, that is, in the Y direction. The Y motor 145 drives the Y movement mechanism 147.

[0032] The wide table 3 will be described with reference to Fig. 2 and Fig. 9 to Fig. 12(B). As shown in Fig. 2, the wide table 3 is removably attached to the second attachment portion 132 of the bed 10. When the wide table 3 is attached to the bed 10, the wide table 3 is disposed behind the bed 10.

[0033] As shown in FIGS. 9 to 12B, the wide table 3 includes a table top 31, legs 41 to 43, a first lever 35, a second lever 34, and an unlocking member 45. The table top 31 is a plate-like member that is elongated in the left-right direction in a plan view. When the wide table 3 is attached to the bed 10, the table top 31 has a second extension surface 32 that extends horizontally, perpendicular to the up-down direction. The second extension surface 32 is the upper surface of the table top 31. When the wide table 3 is attached to the bed 10, the second extension surface 32 is flush with the bed surface 110 or located several millimeters below the bed surface 110. When the embroidery device 140 is attached to the bed 10, the second extension surface 32 in this example is set 2 mm below the bed surface 110. By positioning the second extension surface 32 below the bed surface 110, it is possible to avoid interfering with the horizontal movement of the embroidery frame 150. Even in this case, the second extension surface 32 can support the embroidery frame 150 when it bends downward due to the weight of the sewing material. When the bed 10 is equipped with an auxiliary device 170 or 200 (described later) for sewing practical stitches, the second extension surface 32 may be flush with the bed surface 110. The height of the second extension surface 32 when the wide table 3 is attached to the bed 10 may be variable depending on the auxiliary device attached to the bed 10. The difference in height between the bed surface 110 and the second extension surface 32 when the wide table 3 is attached to the bed 10 is preferably within 3 mm, and particularly preferably within 2 mm. Marks 321 and 322 are provided on the second extension surface 32. The marks 321 and 322 indicate the left-right positions of the first lever 35 and the second lever 34, respectively. The table top 31 is provided with a protrusion 311 that protrudes downward from the underside 310 of the table top 31. The protrusion 311 is disposed to the right of the center of the lower surface 310 .

[0034] Legs 41 to 43 are connected to the underside 310 of the table top 31. Each of legs 41 to 43 is connected to the table top 31 so as to be rotatable about a horizontally extending rotation axis between a vertically extending use position and a horizontally extending storage position. Leg 41 is supported at the front end and left-right center of the underside 310 of the table top 31 so as to be rotatable about a rotation axis 411 extending left-right. Leg 42 is supported at the rear right end of the underside 310 of the table top 31 so as to be rotatable about a rotation axis 421 extending left-right. Leg 43 is supported at the rear left end of the underside 310 of the table top 31 so as to be rotatable about a rotation axis 431 extending left-right.

[0035] The first lever 35 and the second lever 34 protrude further forward than a notch 331 formed in the front surface 33 of the table plate 31 in an insertion direction K1, which is one of the lateral directions D1 of the bed surface 110 extending horizontally of the sewing machine 1. The notch 331 is recessed upward from the lower end of the front surface 33. The first lever 35 and the second lever 34 are disposed in the first direction N1 further from the center of the table plate 31 in the longitudinal direction D2. The first lever 35 and the second lever 34 are shaped like plates that are long in the front-to-rear direction parallel to the bed surface 110. The second lever 34 is disposed to the left of the first lever 35.

[0036] The first lever 35 is provided symmetrically to the second lever 34. The first lever 35 includes a rotation shaft 351, a first hook 37, a first inclined portion 39, a first detachment end portion 352, and a spring support portion 353. The rotation shaft 351 extends in the up-down direction near the center of the first lever 35 in the front-to-rear direction. The first lever 35 is supported by the table plate 31 so as to be rotatable about the rotation shaft 351 between a first normal position shown in FIGS. 10(A) and 12(A) and a first detachment position shown in FIGS. 10(B) and 12(B). In the first detachment position, the first hook 37 is positioned in the second direction N2, i.e., to the left, from the first normal position.

[0037] The first hook 37 protrudes in the first direction N1, i.e., to the right, from the front end of the first lever 35. The first inclined portion 39 is inclined in the longitudinal direction D2, more specifically, to the left as it approaches the front, between the first hook 37 and an end 350 of the first lever 35 in the insertion direction J1, i.e., the front end of the first lever 35. The first removal end 352 is the end of the first lever 35 in the removal direction K2. A left portion of the first removal end 352 protrudes leftward and abuts against a protrusion 456 of the lock release member 45, which will be described later. The spring support portion 353 is a hook provided at the end of the first lever 35 in the removal direction K2. The spring support portion 353 supports the right end of the spring 30. The spring 30 is a coil spring. The first lever 35 is biased by the spring 30 in a clockwise direction around the pivot shaft 351, as viewed from the bottom. After being inserted into the opening 65 , the first lever 35 is rotated from the first attachment / detachment position to the first normal position, whereby the first hook 37 engages with the second attachment portion 132 .

[0038] The second lever 34 includes a pivot shaft 341, a second hook 36, a second inclined portion 38, a second detachment end portion 342, and a spring support portion 343. The pivot shaft 341 extends in the up-down direction near the center of the second lever 34 in the front-to-rear direction. The second lever 34 is supported by the table plate 31 so as to be pivotable about the pivot shaft 341 between a second normal position shown in FIGS. 10(A) and 12(A) and a second detachment position shown in FIGS. 10(B) and 12(B). In the second detachment position, the second hook 36 is positioned in the second direction N2, i.e., to the right, relative to the second normal position.

[0039] The second hook 36 protrudes in the second direction N2, i.e., leftward, from the front end of the second lever 34. The second inclined portion 38 is inclined in the longitudinal direction D2, more specifically, rightward as it extends forward, between the second hook 36 and an end 340 of the second lever 34 in the insertion direction J1, i.e., the front end of the second lever 34. The second removal end 342 is the end of the second lever 34 in the removal direction K2. A right portion of the second removal end 342 protrudes rightward and abuts against a protrusion 456 of the lock release member 45, which will be described later. The spring support portion 343 is a hook provided at the end of the second lever 34 in the removal direction K2, i.e., the rear end. The spring support portion 343 supports the left end of the spring 30. The second lever 34 is biased by the spring 30 in a counterclockwise direction as viewed from the bottom, centered on the pivot shaft 341. After the second lever 34 is inserted into the opening 65 of the second mounting portion 132 , the second lever 34 rotates from the second mounting / detaching position to the second normal position, whereby the second hook 36 engages with the second mounting portion 132 .

[0040] The unlocking member 45 is connected to the first lever 35 and the second lever 34 and is supported on the underside 310 of the table top 31 so as to be movable from a first position shown in FIGS. 10(A) and 12(A) to a second position shown in FIGS. 10(B) and 12(B). The unlocking member 45 is plate-shaped and parallel to the bed surface 110 of the table top 31. The unlocking member 45, together with the table top 31, vertically sandwiches the first lever 35 and the second lever 34. The unlocking member 45 includes a base plate 451 and a protrusion 456. The protrusion 456 protrudes upward in a cylindrical shape from the upper surface of the front part of the base plate 451. The protrusion 456 abuts against the first removal end 352 of the first lever 35 and the second removal end 342 of the second lever 34. A hole 455 is formed in the rear part of the base plate 451, penetrating in the vertical direction. The base plate 451 functions as a handle that the user operates by placing his or her finger in a hole 455 .

[0041] The base plate 451 has elongated holes 452 to 454 formed in the front-rear direction. The elongated hole 452 is formed in the front right portion of the base plate 451, and the pivot shaft 351 is inserted through the elongated hole 452. The elongated hole 453 is formed in the front left portion of the base plate 451, and the pivot shaft 341 is inserted through the elongated hole 453. The elongated hole 453 is formed in the center of the base plate 451, and the protrusion 311 is inserted through the elongated hole 452 to 454. The elongated holes 452 to 454 guide the movement of the unlocking member 45 between the first position and the second position. As shown in FIG. 10(A), when the unlocking member 45 is in the first position, the pivot shaft 351 is located at the rear end of the elongated hole 452, the pivot shaft 341 is located at the rear end of the elongated hole 453, and the protrusion 311 is located at the rear end of the elongated hole 454. 10(B), when the unlocking member 45 is in the second position, the position of the unlocking member 45 relative to the table plate 31 is further rearward than the position of the unlocking member 45 relative to the table plate 31 when the unlocking member 45 is in the first position. When the unlocking member 45 is in the second position, the pivot shaft 351 is located at the front end of the elongated hole 452, the pivot shaft 341 is located at the front end of the elongated hole 453, and the protrusion 311 is located at the front end of the elongated hole 454.

[0042] As shown in FIG. 12(A), the wide table 3 has a first protrusion 462 and a second protrusion 461. In this embodiment, the first protrusion 462 and the second protrusion 461 protrude upward from the upper surface of the lock release member 45. When the first lever 35 is in the first normal position and the wide table 3 is moved in the first direction N1 relative to the bed 10, the first protrusion 462 abuts against the first removal end 352 of the first lever 35 in the removal direction K2. The first protrusion 462 is provided further in the first direction N1 than the first removal end 352. When the second lever 34 is in the second normal position and the wide table 3 is moved in the second direction N2 relative to the bed 10, the second protrusion 461 abuts against the second removal end 342 of the second lever 34 in the removal direction K2. The second protrusion 461 is provided further in the second direction N2 than the second removal end 342. When a force is applied to the wide table 3 in the left-right direction while the wide table 3 is attached to the bed 10, the second convex portion 461 and the first convex portion 462 prevent the second lever 34 and the first lever 35 from rotating against the biasing force of the spring 30 and causing rattling. Furthermore, the second convex portion 461 and the first convex portion 462 are configured to prevent the wide table 3 from accidentally coming off by restricting the rotation of the second lever 34 and the first lever 35.

[0043] When attaching the wide table 3 to the bed 10, the user places the legs 41 to 43 in the use position and inserts the second lever 34 and the first lever 35 of the wide table 3 into the opening 65 while using the marks 321, 322 on the second expansion surface 32 as guides. When the wide table 3 is attached to the bed 10, the cover 62 of the second attachment portion 132 is pushed in the insertion direction K1 by the first lever 35 and the second lever 34, thereby rotating from the closed position to the open position. The first lever 35 is inserted into the opening 65 with the first inclined portion 39 abutting against the engagement edge 66, thereby rotating from the normal position to the detachable position against the biasing force of the spring 30. The second lever 34 is inserted into the opening 65 with the second inclined portion 38 abutting against the engagement edge 66, thereby rotating from the normal position to the detachable position against the biasing force of the spring 30. After the first hook 37 of the first lever 35 and the second hook 36 of the second lever 34 are inserted through the opening 65 in the insertion direction K1, the first lever 35 and the second lever 34 are rotated from the detachable position to the normal position by the biasing force of the spring 30. This causes the first hook 37 and the second hook 36 to engage with the second mounting portion 132. The lock release member 45 is pushed in the insertion direction K1 by the first detachable end portion 352 of the first lever 35 and the second detachable end portion 342 of the second lever 34, and moves from the second position to the first position.

[0044] As shown in FIG. 2, when the wide table 3 is attached to the bed 10, the end of the wide table 3 in the first direction N1 is located further in the second direction N2 than the leg post 11 in the longitudinal direction D2. That is, the right end of the wide table 3 is located between the leg post 11 and the first side plate 111 in the longitudinal direction D2. In other words, the end of the wide table 3 in the second direction N2 is located further in the second direction N2 than the first side plate 111 in the longitudinal direction D2. That is, the left end of the wide table 3 is located between the first side plate 111 and the first side plate 113 in the longitudinal direction D2. The wide table 3 is disposed only at the rear of the bed 10, and is not disposed at the front of the bed 10. The front surface 33 of the wide table 3 abuts the second side plate 122, and the second extension surface 32 forms a plane that is continuous with the bed surface 110 and the second extension surface 32. When the legs 41 to 43 are in their use positions, the table plate 31, first lever 35, and second lever 34 are positioned above the vertical center M1 of the wide table 3. Because the first lever 35 and the second lever 34 engage with the second mounting portion 132 of the bed 10 above the vertical center M1 of the wide table 3, a gap is less likely to form between the second expansion surface 32 and the bed surface 110 than when the first lever 35 and the second lever 34 engage with the second mounting portion 132 of the bed 10 below the vertical center of the wide table 3. The wide table 3 is positioned below the rear right portion of the embroidery frame 150 and can support the rear right portion of the embroidery frame 150 if the embroidery frame 150 bends downward due to the weight of the sewing material. Scissors and other tools can be placed in the space below the table plate 31.

[0045] When removing the wide table 3 from the bed 10, the user places his / her finger in the hole 455 of the unlocking member 45 of the wide table 3 and moves the unlocking member 45 backward. The unlocking member 45 is guided by the elongated holes 452 to 454 and moves from the first position to the second position. As the unlocking member 45 moves from the first position to the second position, the convex portion 456 rotates the first lever 35 counterclockwise as viewed from the bottom against the bias of the spring 30. The convex portion 456 rotates the second lever 34 clockwise as viewed from the bottom against the bias of the spring 30. As a result, the convex portion 456 of the unlocking member 45 rotates the first lever 35 from the first normal position to the first detachable position and rotates the second lever 34 from the second normal position to the second detachable position, thereby releasing the engagement between the first hook 37 and the second hook 36 and the second attachment portion 132. The user moves the wide table 3 from the bed 10 in the removal direction K2, pulls the first lever 35 and the second lever 34 of the wide table 3 out of the opening 65, and then releases the lock release member 45. The first lever 35 and the second lever 34 rotate from the attached / detached position to the normal position due to the biasing force of the spring 30. The lock release member 45 is pushed in the insertion direction K1 by the first removal end 352 of the first lever 35 and the second removal end 342 of the second lever 34, and moves from the second position to the first position. The user can store the wide table 3 compactly with the legs 41 to 43 in the storage position.

[0046] The wide table 7 will be described with reference to Fig. 1 and Fig. 13 to Fig. 15. As shown in Fig. 1, the wide table 7 is removably attached to the second attachment portion 131 of the bed 10. When the wide table 7 is attached to the bed 10, the wide table 7 is disposed in front of the bed 10.

[0047] As shown in Figures 13 to 15, the wide table 7 includes a table top 71, legs 81 and 82, a lever 84, a protrusion 74, an unlocking member 90, and a spring 80. The table top 71 is rectangular and elongated in the left-right direction when viewed from above. The left rear portion of the table top 71 is recessed forward. The table top 71 has a second expansion surface 72 that expands in the horizontal direction perpendicular to the up-down direction. When the wide table 7 is attached to the bed 10, the second expansion surface 72 is flush with the bed surface 110 or several millimeters below the bed surface 110. The underside 710 of the table top 71 has protrusions 87 and 88 that protrude downward. The protrusion 87 is provided at the left rear portion of the underside 710. The protrusion 88 is provided at the rear portion of the underside 710 and in the center in the left-right direction.

[0048] As shown in FIGS. 14A to 14C, the lever 84 is formed integrally with the unlocking member 90. The lever 84 has a protrusion 841 that protrudes rightward from the rear end of a base plate 843 of the unlocking member 90. The lever 84 protrudes rearward in the first direction N1 from the center of the table top 71 in the longitudinal direction D2 and further rearward than the back surface 73 of the table top 71. The lever 84 has a hook 85 that protrudes in the first direction N1 from the right rear portion of the protrusion 841, rearward of the back surface 73 of the table top 71. In the wide table 7, the lever 84 has an inclined portion 86 that is inclined in the longitudinal direction D2 between the hook 85 and the end 83 of the lever 84 in the insertion direction J1, i.e., the rear end of the lever 84. An elongated hole 842 that extends in an arc shape in the left-right direction is formed at the right end of the protrusion 841. A convex portion 87 is inserted into the elongated hole 842. The protrusion 74 protrudes rearward from the rear surface 73 of the table plate 71 in the second direction N2 further than the lever 84.

[0049] The unlocking member 90 is connected to the lever 84 and is supported by the table plate 71 so as to be movable from a first position to a second position. The unlocking member 90 includes a base plate 843, a support arm 846, and a protrusion 847. The base plate 843 is formed with a hole 845 penetrating in the vertical direction and an elongated hole 844. The hole 845 is rectangular in bottom view. The elongated hole 844 is formed to the left rear of the hole 845 and has an arc shape that slopes rightward as it extends rearward. A protrusion 88 is inserted into the elongated hole 844. The support arm 846 extends rightward from the front right of the base plate 843. A boss 712 extending cylindrically downward from the underside 710 of the table plate 71 is inserted into the right end of the support arm 846. The support arm 846 is fixed to the table plate 71 by a screw 89 so as to be rotatable around the boss 712. That is, the lever 84 and the lock release member 90 are fixed to the table plate 71 so as to be rotatable around the boss 712 while being guided by the elongated holes 842 and 844. The protrusion 847 extends leftward from the left end of the base plate 843.

[0050] 15, spring 80 is disposed between the underside 710 of table plate 71 and protrusion 841, and urges unlocking member 90 in the direction from the second position toward the first position. Spring 80 is a coil spring. One end of spring 80 is fixed to flange 711 extending downward from the underside 710 of table plate 71. The other end of spring 80 is fixed to convex portion 848 protruding upward from the upper surface of protrusion 841.

[0051] The leg 81 is connected to the left part of the underside 710 of the table top 71 so as to be rotatable about a horizontally extending pivot shaft 811 between a vertically extending use position and a horizontally extending storage position. The leg 82 is connected to the right part of the underside 710 of the table top 71 so as to be rotatable about a horizontally extending pivot shaft 821 between a vertically extending use position and a horizontally extending storage position. As shown in FIG. 14(A), when the leg 81 is in the storage position, the leg 81 abuts against a protrusion 847 of the unlocking member 90, preventing the unlocking member 90 from moving from the first position to the second position. When the leg 82 is in the storage position, the leg 82 abuts against a protrusion 841 of the lever 84, preventing the unlocking member 90 from moving from the first position to the second position.

[0052] When attaching the wide table 7 to the bed 10, the user moves the legs 81, 82 from the storage position shown in FIG. 14(A) to the use position shown in FIG. 14(B), and then inserts the lever 84 and the protrusion 74 of the wide table 7 into the opening 67 of the second attachment portion 131. When the wide table 7 is attached to the bed 10, the cover 69 of the second attachment portion 131 is pushed in the insertion direction J1 by the lever 84, thereby rotating from the closed position to the open position. The lever 84 is inserted into the opening 67 with the inclined portion 86 and the protrusion 74 abutting against the engagement edge 68, thereby rotating about the screw 89 from the normal position shown in FIG. 14(B) to the attachment / detachment position shown in FIG. 14(C). After the hook 85 of the lever 84 is inserted in the insertion direction J1 beyond the opening 67, the lever 84 rotates from the attachment / detachment position to the normal position due to the biasing force of the spring 80, and the lock release member 90 rotates from the second position to the first position. As a result, the hook 85 engages with the second mounting portion 131 .

[0053] As shown in FIG. 1 , when the wide table 7 is attached to the bed 10, the end of the wide table 7 in the first direction N1 is located further in the second direction N2 than the leg post 11 in the longitudinal direction D2. That is, the right end of the wide table 7 is located between the leg post 11 and the left end of the bed 10 in the longitudinal direction D2. In the longitudinal direction D2, the end of the wide table 7 in the second direction N2 is located further in the second direction N2 than the first side panel 111. That is, the left end of the wide table 7 is located between the first side panel 111 and the first side panel 113 in the longitudinal direction D2. The wide table 7 is disposed only in front of the bed 10, and is not disposed in the rear of the bed 10. The back surface 73 of the wide table 7 abuts the second side panel 121, and the second extension surface 72 forms a plane that is continuous with the bed surface 110 and the second extension surface 72. Because the lever 84 engages with the second mounting portion 131 of the bed 10 above the vertical center M2 of the wide table 7 when the legs 81, 82 are in the use position, a gap is less likely to be formed between the second expansion surface 72 and the bed surface 110 compared to when the lever 84 engages with the second mounting portion 131 of the bed 10 below the vertical center of the wide table 7 when the legs 81, 82 are in the use position. The wide table 7 is positioned below the front right portion of the embroidery frame 150, and can support the front right portion of the embroidery frame 150 if the embroidery frame 150 bends downward due to the weight of the item being sewn.

[0054] To remove the wide table 7 from the bed 10, the user places his / her finger in the hole 845 of the unlocking member 90 of the wide table 7 and moves the unlocking member 90 in the removal direction J2, i.e., forward. The unlocking member 90 moves from the first position shown in FIG. 14(B) to the second position shown in FIG. 14(C) around the screw 89. The lever 84 rotates from the normal position shown in FIG. 14(B) to the detachable position shown in FIG. 14(C), disengaging the hook 85 from the second mounting portion 131. After moving the wide table 7 from the bed 10 in the removal direction J2, the user releases the unlocking member 90. The lever 84 rotates from the detachable position to the normal position due to the biasing force of the spring 80, and the unlocking member 90 rotates from the second position to the first position. The user can store the wide table 7 compactly with the legs 81 and 82 in the storage position.

[0055] 16 to 18, the auxiliary devices 170 and 200 configured to be removably attached to the bed 10 of the sewing machine 1 will be described. As shown in FIGS. 16(A) to 16(C), a device selected from the auxiliary device 170, the embroidery device 140, and the auxiliary device 200 can be removably attached to the bed 10 of the sewing machine 1. A wide table 3 can be removably attached to the bed 10 of the sewing machine 1 in each state in which a device selected from the auxiliary device 170, the embroidery device 140, and the auxiliary device 200 is attached. Although not shown, a wide table 7 can be removably attached to the bed 10 of the sewing machine 1 in a state in which the auxiliary device 170 is attached.

[0056] As shown in FIGS. 16(A) and 17 , the auxiliary device 170 is attached to the bed 10 when the user is performing normal sewing work other than embroidery sewing. The auxiliary device 170 has a rectangular shape in a plan view, with the longitudinal direction being the left-right direction. The left-right length of the auxiliary device 170 is longer than the left-right length of the free arm 102. The auxiliary device 170 has a recess 178 recessed to the left from the center in the front-rear direction of a right surface 179 of the auxiliary device 170. The auxiliary device 170 has a first expansion surface 171 that expands horizontally. The first expansion surface 171 is the upper surface of the auxiliary device 170. The auxiliary device 170 is attached to the first mounting portion 130. When the auxiliary device 170 is attached to the first mounting portion 130, the free arm 102 of the bed 10 is positioned in the recess 178. When the auxiliary device 170 is attached to the first mounting portion 130, the first expansion surface 171 is flush with the bed surface 110. The engagement claws 176 and 177 protrude rightward from the right surface 179 rearward of the recessed portion 178. The engagement protrusion 175 protrudes rightward from the right surface 179 in a cylindrical shape forward of the recessed portion 178. The engagement protrusion 173 protrudes rightward from the left surface 172 of the recessed portion 178 in a cylindrical shape. When the auxiliary device 170 is attached to the first attachment portion 130, the engagement claws 176 and 177 are inserted into the engagement holes 119 and 120, respectively, and removably engage with the first side plate 111 of the first attachment portion 130. The engagement protrusion 173 is inserted into the engagement hole 161 and removably engages with the first side plate 113 of the first attachment portion 130. The engagement protrusion 175 is inserted into the engagement hole 155 and removably engages with the first side plate 111 of the first attachment portion 130.

[0057] As shown in FIGS. 16(C) and 18, the auxiliary device 200 is attached to the bed 10 when the user is performing normal sewing work other than embroidery sewing. The left-right length of the auxiliary device 200 is longer than the left-right length of the free arm 102. The auxiliary device 200 includes an extension plate 201 and legs 211 to 214. The extension plate 201 is a C-shaped plate in a plan view. A recess 208 is formed on the right surface 209 of the extension plate 201, recessed leftward from the center in the front-rear direction. The extension plate 201 has a first extension surface 202 that extends horizontally. The first extension surface 202 is the upper surface of the auxiliary device 200. The first extension surface 202 is wider than the first extension surface 171 of the auxiliary device 170. The auxiliary device 200 is attached to the first mounting portion 130. When the auxiliary device 200 is attached to the first mounting portion 130, the free arm 102 of the bed 10 is positioned in the recess 208. When the auxiliary device 200 is attached to the first attachment portion 130 , the first expansion surface 202 is flush with the bed surface 110 .

[0058] The engagement claws 206 and 207 protrude rightward from a right surface 209 behind the recessed portion 208. The engagement protrusion 204 protrudes rightward from a left surface 203 of the recessed portion 208. When the auxiliary device 200 is attached to the first attachment portion 130, the engagement claws 206 and 207 are inserted into the engagement holes 119 and 120, respectively, and removably engage with the first side plate 111 of the first attachment portion 130. The engagement protrusion 204 is inserted into the engagement hole 161 and removably engages with the first side plate 113 of the first attachment portion 130.

[0059] The legs 211 to 214 are connected to the underside 210 of the extension plate 201. The legs 211 to 214 are each connected to the extension plate 201 so as to be rotatable about a horizontally extending pivot axis between a vertically extending use position and a horizontally extending storage position. The leg 211 is supported at the front left end of the extension plate 201. The leg 212 is supported at the front right end of the extension plate 201. The leg 213 is supported at the rear of the extension plate 201 and in the center in the left-right direction. The leg 214 is supported at the rear left end of the extension plate 201.

[0060] The electrical configuration of the sewing machine 1 will be described with reference to Figure 19. The control unit 2 of the sewing machine 1 includes a CPU 75, a ROM 76, a RAM 77, a storage device 78, and an input / output (I / O) interface 70. The CPU 75 is connected to the ROM 76, the RAM 77, the storage device 78, and the I / O interface 70 via a bus 79.

[0061] The CPU 75 is responsible for main control of the sewing machine 1 and executes various calculations and processes related to sewing in accordance with various programs stored in the ROM 76. The ROM 76 has a plurality of storage areas, including a program storage area (not shown). The program storage areas store various programs for operating the sewing machine 1, including a program for executing the main processing described below.

[0062] The RAM 77 has a storage area for storing the results of calculations performed by the CPU 75. The storage device 78 stores various parameters and other data for the sewing machine 1 to execute various processes. The storage device 78 stores, for each of a plurality of sewing patterns, sewing data for sewing various sewing patterns that can be sewn by the sewing machine 1. The sewing data includes coordinate data. The coordinate data is data that indicates the formation positions of stitches included in the sewing pattern, i.e., the positions of needle points, using coordinates in an embroidery coordinate system. In other words, the coordinate data includes data that represents multiple coordinates for each needle point. The storage device 78 stores, as frame type information, the correspondence between the types of embroidery frames that can be attached to the holder 143 and the sewing area. The sewing area is a sewable area set inside the embroidery frame attached to the holder 143 of the sewing machine 1. The storage device 78 stores embroidery frames that are larger than a predetermined size as large frames.

[0063] The I / O interface 70 is connected to the drive circuits 91 to 94, the touch screen 26, the start / stop switch 29, the frame sensor 22, and the table sensors 20 and 24. The frame sensor 22 is configured to detect that an embroidery frame has been attached to the embroidery device 140 and output a detection result corresponding to the type of embroidery frame. In this example, the frame sensor 22 detects the type of embroidery frame according to a combination of ON and OFF states of multiple mechanical switches. The table sensor 20 is configured to mechanically detect whether the wide table 7 is attached to the second attachment portion 131 of the bed 10 and output the detection result. The table sensor 24 is configured to mechanically detect whether the wide table 3 is attached to the second attachment portion 132 of the bed 10 and output the detection result.

[0064] The drive circuit 91 is connected to the sewing machine motor 25. The drive circuit 91 drives the sewing machine motor 25 in accordance with control signals from the CPU 75. As the sewing machine motor 25 is driven, the needle bar 6 swings up and down via the main shaft. The drive circuit 92 drives the LCD 21 in accordance with control signals from the CPU 75, thereby displaying an image on the LCD 21. The drive circuit 93 is connected to an X motor 144. The drive circuit 94 is connected to a Y motor 145. The drive circuits 93 and 94 respectively drive the X motor 144 and the Y motor 145 in accordance with control signals from the CPU 75. As the X motor 144 and the Y motor 145 are driven, the embroidery frame 150 attached to the embroidery device 140 moves in the X and Y directions by amounts corresponding to the control signals.

[0065] A brief description of the operation of the sewing machine 1 will be given below. When sewing embroidery using the embroidery frame 150, the embroidery frame 150 is moved in the X and Y directions by the embroidery device 140, and the needle bar 6 is also swung up and down. This causes the sewing needle 4 attached to the needle bar 6 to sew a sewing pattern onto the sewing workpiece held in the embroidery frame 150.

[0066] The main processing will be described with reference to Figure 20. When the CPU 75 of the sewing machine 1 receives a selection instruction to select a sewing pattern to be embroidered, it reads and runs a program to execute the main processing. The selection instruction may be input to the sewing machine 1 from an external device or may be input via the touch screen 26. The program includes instructions to cause the CPU 75 to execute the following processes. Various data obtained during the main processing is stored in the RAM 77 as appropriate. Hereinafter, steps are abbreviated as S.

[0067] As shown in FIG. 20, the CPU 75 acquires sewing data for the sewing pattern included in the selection instruction (S1). The CPU 75 acquires the type of embroidery frame 150 attached to the holder 143 based on the detection result of the frame sensor 22 (S2). The CPU 75 determines whether the embroidery frame 150 attached to the holder 143 is a large frame (S3) based on whether the type of embroidery frame 150 acquired in S2 is stored as a large frame in the storage device 78. If the embroidery frame attached to the holder 143 is not a large frame (S3: NO), the CPU 75 determines whether a sewing instruction has been detected (S11). If a sewing instruction has not been detected (S11: NO), the CPU 75 returns the process to S11. If a sewing instruction has been detected (S11: YES), the CPU 75 performs normal embroidery sewing in accordance with the sewing data acquired in S1 (S12).

[0068] In this specific example, the embroidery frame 150 attached to the holder 143 is determined to be a large frame (S3: NO), and the CPU 75, when it determines based on the detection result of the frame sensor 22 that an embroidery frame 150 of a predetermined size is attached, performs notification processing to notify the user that it is necessary to attach the wide table 7 to the second attachment portion 131 and the wide table 3 to the second attachment portion 132 (S4). Specifically, the CPU 75 displays on the LCD 21 a message urging the user to attach the wide table 7 to the second attachment portion 131 and the wide table 3 to the second attachment portion 132.

[0069] The CPU 75 determines whether a sewing instruction has been detected (S5). If a sewing instruction has not been detected (S5: NO), the CPU 75 returns the process to S5. If a sewing instruction has been detected (S5: YES), the CPU 75 determines whether wide table 7 is attached to second mounting portion 131 and wide table 3 is attached to second mounting portion 132 based on the detection results of table sensors 20, 24 (S6). If wide table 7 is attached to second mounting portion 131 and wide table 3 is attached to second mounting portion 132 (S6: YES), the CPU 75 drives needle bar 6 in the vertical direction at a second speed that is faster than the first speed, and performs embroidery sewing in accordance with the sewing data acquired in S1 (S7).

[0070] If a wide table is not attached to at least one of the second attachment portions 131 and 132 (S6: NO), the CPU 75 performs warning processing to output a warning (S8). Specifically, the CPU 75 displays a message on the LCD 21 warning that sewing will be performed without a wide table attached to at least one of the second attachment portions 131 and 132. The CPU 75 drives the needle bar 6 vertically at a first speed in accordance with the sewing data acquired in S1, and performs embroidery sewing in accordance with the sewing data acquired in S1 (S9). Following any of S7, S9, and S12, the CPU 75 then ends the main processing.

[0071] 21 to 23, a wide table 500 of a first modified example will be described. Although not shown, the wide table 500 is removably attached to the second attachment portion 132 of the bed 10. When the wide table 500 is attached to the bed 10, the wide table 500 is disposed behind the bed 10. The wide table 500 includes a table plate 531, legs 541 and 542, a lever 59, a protrusion 540, an unlocking member 58, and a spring 550.

[0072] The table plate 531 is rectangular in shape and is elongated in the left-right direction when viewed from above. The table plate 531 has a second extension surface 532 that extends in the horizontal direction, which is perpendicular to the up-down direction. When the wide table 500 is attached to the bed 10, the second extension surface 532 is on the same plane as the bed surface 110 or several mm below the bed surface 110. The underside 571 of the table plate 531 has protrusions 537 and 538 that protrude downward. The protrusion 537 is located slightly left of the center of the underside 571. The protrusion 538 is located right of the center of the underside 571.

[0073] As shown in Figures 22(A) to 22(C), the lever 59 is formed integrally with the unlocking member 58. The lever 59 has a protruding portion 551 protruding rightward from the front end of the base plate 553 of the unlocking member 58. The lever 59 has a hook 535 protruding in the first direction N1 at its front end, which protrudes in the insertion direction K1 further than the front surface 533 of the table plate 531. The lever 59 has an inclined portion 536 inclined in the second direction N2 as far as the insertion direction K1 between the hook 535 and an end 557 of the lever 59 in the insertion direction J1. An elongated hole 552 extending in an arc shape in the left-right direction is formed at the right end of the lever 59. A protruding portion 538 is inserted into the elongated hole 552. The protruding portion 540 protrudes forward from the front surface 533 of the table plate 531 in the second direction N2 further than the lever 59.

[0074] The unlocking member 58 is connected to a lever 59 and is supported by the table plate 531 so as to be movable from a first position to a second position. The unlocking member 58 includes a base plate 553, a support arm 556, and a protrusion 558. The base plate 553 is formed with a hole 555 that penetrates in the vertical direction and an elongated hole 554. The hole 555 is rectangular in bottom view. The elongated hole 554 is formed in an arc shape, inclined rightward toward the front, at the front left of the hole 555. The protrusion 537 is inserted into the elongated hole 554. The support arm 556 extends rightward from the right rear part of the base plate 553. A boss 560 is inserted into the right end of the support arm 556, and the support arm 556 is fixed to the table plate 531 with a screw 539 so as to be rotatable about the boss 560. That is, the lever 59 and the lock release member 58 are fixed to the table plate 531 so as to be rotatable around the boss 560 while being guided by the elongated holes 552 and 554. The protrusion 558 extends leftward from the left end of the base plate 553.

[0075] Spring 550 is disposed between table plate 531 and base plate 553 in the vertical direction, and biases unlocking member 58 in a direction from the second position toward the first position. Spring 550 is a coil spring. One end of spring 550 is fixed to flange 572 extending downward from lower surface 571 of table plate 531. The other end of spring 550 is fixed to protrusion 559 protruding upward from the upper surface of protrusion 558.

[0076] Leg 541 is connected to the right portion of underside 571 of table plate 531 so as to be rotatable about rotation shaft 543 extending horizontally between a use position extending in the vertical direction and a storage position extending horizontally. Leg 542 is connected to the left portion of underside 571 of table plate 531 so as to be rotatable about rotation shaft 544 extending horizontally between a use position extending in the vertical direction and a storage position extending horizontally. As shown in FIG. 22(A), when leg 541 is in the storage position, leg 541 and lever 59 abut against each other, and unlocking member 58 cannot be moved from the first position to the second position.

[0077] When attaching the wide table 500 to the bed 10, the user moves the legs 541, 542 from the storage position shown in FIG. 22(A) to the use position shown in FIG. 22(B), and then inserts the lever 59 and the protrusion 540 of the wide table 500 into the opening 65. When the wide table 500 is attached to the bed 10, the cover 62 of the second attachment portion 132 is pushed in the insertion direction K1 by the lever 59, thereby rotating from the closed position to the open position. The lever 59 is inserted into the opening 65 with the inclined portion 536 and the protrusion 540 abutting against the engagement edge 66, thereby rotating from the normal position shown in FIG. 22(B) to the attachment / detachment position shown in FIG. 22(C). After the hook 535 of the lever 59 is inserted into the opening 65 in the insertion direction K1, the lever 59 rotates around the boss 560 from the attachment / detachment position to the normal position due to the biasing force of the spring 550. As a result, the hook 535 engages with the second mounting portion 132. When the legs 541, 542 are in the use position, the table plate 531 and the lever 59 are positioned above the center M3 of the wide table 500 in the up-down direction.

[0078] When removing the wide table 500 from the bed 10, the user places his / her finger in the hole 555 of the unlocking member 58 of the wide table 500 and moves the unlocking member 58 backward. The unlocking member 58 moves around the boss 560 from the first position shown in FIG. 22(B) to the second position shown in FIG. 22(C). The lever 59 rotates from the normal position shown in FIG. 22(B) to the detachable position shown in FIG. 22(C), thereby releasing the engagement between the hook 535 and the second mounting portion 132. After moving the wide table 500 from the bed 10 in the removal direction K2, the user releases his / her hand from the unlocking member 58. The lever 59 rotates from the detachable position to the normal position due to the biasing force of the spring 550. The user can store the wide table 500 compactly with the legs 541 and 542 in the storage position.

[0079] A wide table 600 of a second modified example will be described with reference to Fig. 24. As shown in Fig. 24, the wide table 600 is removably attached to the second attachment portion 131 of the bed 10. When the wide table 600 is attached to the bed 10, the wide table 600 is disposed in front of the bed 10. The wide table 600 includes a table top 601, legs 604, 605, and second magnets 606, 607.

[0080] The table top 601 has a rectangular shape that is elongated in the left-right direction when viewed from above. The left rear part of the table top 601 is recessed forward. The table top 601 has a second expansion surface 602 that extends in the horizontal direction perpendicular to the up-down direction. When the wide table 7 is attached to the bed 10, the second expansion surface 602 is on the same plane as the bed surface 110 or several mm below the bed surface 110. The second magnets 606 and 607 are fixed to the back surface 603 of the table top 601. The second magnets 606 and 607 are aligned in the left-right direction. The second magnet 606 has the same magnetic field direction as the first magnet 631. The second magnet 607 has the same magnetic field direction as the first magnet 632. The magnetic fields of the second magnets 606 and 607 are different in direction. Furthermore, the magnetic fields of the first magnets 631 and 632 are different in direction. For example, if the back surface of second magnet 606 is an S pole, first magnet 631 is positioned relative to sewing machine 1 so that the front surface of first magnet 631 is an N pole. In this case, first magnet 632 is positioned relative to sewing machine 1 so that the back surface of second magnet 607 is an N pole and the front surface of first magnet 632 is an S pole. In this manner, adjacently positioned second magnets 606 and 607 are positioned so that they generate different magnetic fields. Also, adjacently positioned first magnets 631 and 632 are positioned so that they generate different magnetic fields. That is, first magnet 631 and second magnet 606 attract each other with a magnetic force, and first magnet 632 and second magnet 607 attract each other with a magnetic force. Meanwhile, first magnet 631 and second magnet 607 repel each other with a repulsive force, and first magnet 632 and second magnet 606 repel each other with a repulsive force. Therefore, second magnets 606 and 607 contribute to wide table 600 being attached to bed 10 in an appropriate position.

[0081] Leg 604 is connected to the right part of the underside of table plate 601 so as to be rotatable about a horizontally extending axis between a use position extending in the vertical direction and a storage position extending in the horizontal direction. Leg 605 is connected to the left part of the underside of table plate 601 so as to be rotatable about a horizontally extending axis between a use position extending in the vertical direction and a storage position extending in the horizontal direction.

[0082] When attaching the wide table 600 to the bed 10, the user moves the legs 604, 605 to the use position shown in FIG. 24 and brings the second magnets 606, 607 of the wide table 600 into contact with the first magnets 631, 632 provided on the second side panel 121 of the sewing machine 1. The wide table 600 is attached to the bed 10 by the magnetic force between the first magnets 631, 632 and the second magnets 606, 607. When detaching the wide table 600 from the bed 10, the user moves the wide table 600 from the bed 10 in the removal direction J2 against the magnetic force between the first magnets 631, 632 and the second magnets 606, 607. With the legs 604, 605 in the storage position, the user can store the wide table 600 compactly.

[0083] In the above embodiment, the sewing machine 1, needle bar 6, bed 10, leg post 11, outer periphery 19, and bed surface 110 are examples of the sewing machine, needle bar, leg post, outer periphery, and bed surface of the present invention. The wide tables 3, 7, 500, and 600 are examples of the wide table of the present invention. The table sensors 20 and 24 are examples of the table sensor of the present invention. The frame sensor 22 is an example of the frame sensor of the present invention. The springs 30, 80, and 550 are examples of the spring of the present invention. The table boards 31, 71, 531, and 601 are examples of the table board of the present invention. The first lever 35, the second lever 34, and the levers 59 and 84 are examples of the levers of the present invention. The second expansion surfaces 32, 72, 532, and 602 are examples of the second expansion surfaces of the present invention. The first lever 35 and the second lever 34 are examples of the first lever and the second lever of the present invention, respectively. The first hook 37 and the second hook 36 are examples of the first hook and the second hook of the present invention, respectively. The first inclined portion 39, the second inclined portion 38, and the inclined portions 86 and 536 are examples of inclined portions of the present invention. The unlocking members 45, 58, and 90 are examples of unlocking members of the present invention. The covers 62 and 69 are examples of covers of the present invention. The openings 65 and 67 are examples of openings of the present invention. The engaging edges 66 and 68 are examples of engaging edges of the present invention. The CPU 75 is an example of a processor of the present invention. The legs 41 to 43, 81, 82, 541, 542, 604, and 605 are examples of legs of the present invention. The ends 83, 340, 350, and 557 are examples of ends of the present invention. The hooks 85 and 535, the first hook 37, and the second hook 36 are examples of hooks of the present invention. The first side plates 111 and 113 are examples of first side plates of the present invention. The second side plates 121 and 122 are examples of second side plates of the present invention. The first mounting portion 130 is an example of a first mounting portion of the present invention. The second mounting portions 131, 132, and 630 are examples of second mounting portions of the present invention. The embroidery device 140 and the auxiliary devices 170 and 200 are examples of auxiliary devices of the present invention. The embroidery device 140, the holder 143, and the embroidery frame 150 are examples of an embroidery device, a holder, and an embroidery frame of the present invention, respectively. The first detachment end 352, the second detachment end 342, the second convex portion 461, and the first convex portion 462 are examples of a first detachment end, a second detachment end, a second convex portion, and a first convex portion of the present invention, respectively. The second magnets 606 and 607 are examples of second magnets of the present invention.The first magnets 631, 632 are examples of first magnets of the present invention. The rotation axes 811, 821 are examples of rotation axes of the present invention. The short-side direction D1, the long-side direction D2, the first direction N1, and the second direction N2 are examples of the short-side direction, the long-side direction, the first direction, and the second direction of the present invention, respectively. The insertion directions J1, K1 are examples of the insertion direction of the present invention. The removal directions J2, K2 are examples of the removal direction of the present invention.

[0084] The sewing machine 1 of the above embodiment includes a bed 10. The bed 10 includes a bed surface 110, first side panels 111 and 113, a second side panel 122, a first mounting portion 130, and a second mounting portion 132. The bed surface 110 extends horizontally, perpendicular to the up-down direction. The first side panels 111 and 113 extend downward from the outer periphery 19 of the bed surface 110 and intersect with the longitudinal direction D2 of the bed surface 110. The second side panel 122 extends downward from the outer periphery 19 of the bed surface 110 and intersects with the lateral direction D1 of the bed surface 110. The first mounting portion 130 is capable of mounting an auxiliary device having a first expansion surface that expands horizontally, and is provided on the first side panels 111 and 113. The second mounting portion 132 is a wide table 3 having a second expansion surface 32 that expands horizontally. The wide table 3 has a different shape from the auxiliary device, and is capable of mounting the wide table 3. The second mounting portion 132 is provided on the second side panel 122. The sewing machine 1 can have an auxiliary device attached to the first attachment portion 130 and a wide table 3 attached to the second attachment portion 132. That is, the wide table 3 can be attached with the auxiliary device attached to the bed 10, and the bed surface 110 can be expanded by the second expansion surface 32. Therefore, the second attachment portion 132 of the sewing machine 1 allows the user to optionally expand the surface on which the sewing object is placed when sewing an object that is larger than the bed surface 110, thereby contributing to improved convenience when sewing an object that is larger than the bed surface 110. The second attachment portions 131, 630 of the sewing machine 1 also contribute to achieving the same effect as the second attachment portion 132.

[0085] The sewing machine 1 includes a wide table 3 that is removably attached to the second attachment portion 132 of the bed 10 and has a table plate 31 with a second expansion surface 32. By attaching the wide table 3 to the bed 10 when sewing a large item, the item can be supported by the bed 10 and the wide table 3, thereby contributing to improved convenience during sewing compared to conventional sewing machines 1. The wide tables 7, 500, and 600 also contribute to achieving the same effect as the wide table 3.

[0086] The second mounting portion 132 includes an engagement edge 66 that defines an opening 65 formed in the second side panel 122. When one of the short-side directions D1 is defined as an insertion direction K1, the wide table 3 has levers 34, 35 that protrude further in the insertion direction K1 than the table top 31 and are supported by the table top 31. The levers 34, 35 are inserted into the opening 65 in the insertion direction K1, and the levers 34, 35 engage with the second mounting portion 132, thereby mounting the wide table 3 to the bed 10. Compared to a configuration in which the levers 34, 35 are provided on the bed 10 of the sewing machine 1 and the opening 65 is provided on the wide table 3, the engagement edge 66 of the sewing machine 1 contributes to preventing the levers 34, 35 protruding from the bed 10 from interfering with sewing when the wide table 3 is not mounted on the sewing machine 1. The engagement edge 68 of the sewing machine 1 also contributes to achieving the same effect as the engagement edge 66 of the sewing machine 1.

[0087] The sewing machine 1 includes a leg post 11 that extends in the vertical direction and is connected to the bed 10. The second mounting portion 132 is provided between the first mounting portion 130 and the leg post 11 in the longitudinal direction D2. The second mounting portion 132 contributes to the attachment of the wide table 3 to the sewing machine 1 without interfering with auxiliary devices such as the embroidery device 140. The second mounting portions 131, 630 of the sewing machine 1 also contribute to achieving the same effect as the second mounting portion 132.

[0088] The bed 10 is provided with a cover 62 that covers the opening 65 when the wide table 3 is not attached to the bed 10. The cover 62 of the sewing machine 1 contributes to preventing dust and the like from entering the inside of the bed 10 through the opening 65. The cover 69 of the second attachment part 131 also contributes to achieving the same effect as the cover 62 of the second attachment part 132.

[0089] The cover 62 of the second mounting portion 132 is supported by the bed 10 so as to be rotatable between a closed position where the opening 65 is closed and an open position where the opening 65 is open. When the wide table 3 is mounted on the bed 10, the cover 62 is pushed in the insertion direction K1 by the levers 34, 35, thereby rotating from the closed position to the open position. The cover 62 of the sewing machine 1 contributes to reducing the risk of loss of the cover 62 compared to a case where the cover 62 is removable. The cover 62 of the sewing machine 1 contributes to making the operation of switching whether the cover 62 is placed in the open position a simple operation of rotating the cover 62 between the closed position and the open position by inserting the levers 34, 35. The cover 69 of the second mounting portion 131 also contributes to achieving the same effect as the cover 62 of the second mounting portion 132.

[0090] In the wide table 7, the lever 84 has a hook 85 that protrudes in a first direction N1. When one side of the longitudinal direction D2 is defined as the first direction N1 and the other side is defined as a second direction N2, the lever 84 is supported on the table plate 71 so as to be rotatable between a normal position and a detachable position where the hook 85 is positioned in the second direction N2 from the normal position. After the lever 84 is inserted through the opening 67 in the insertion direction J1, the lever 84 rotates from the detachable position to the normal position, causing the hook 85 to engage with the second mounting portion 132. The lever 84 of the sewing machine 1 contributes to making the operation of engaging the lever 84 with the second mounting portion 132 a relatively simple operation of rotating the lever 84 from the detachable position to the normal position. The lever 59 having the hook 535 of the sewing machine 1 also contributes to achieving the same effect as the lever 84 of the sewing machine 1.

[0091] In the wide table 7, the lever 84 has an inclined portion 86 inclined in the longitudinal direction D2 between the hook 85 and the end 83 of the lever 84 in the insertion direction J1. The lever 84 is rotated from the normal position to the detachable position by being inserted into the opening 67 while the inclined portion 86 abuts against the engagement edge 68. After the hook 85 of the lever 84 is inserted in the insertion direction J1 beyond the opening 67, the lever 84 rotates from the detachable position to the normal position, whereby the hook 85 engages with the second attachment portion 132. The inclined portion 86 of the sewing machine 1 contributes to making the operation of rotating the lever 84 from the normal position to the detachable position a relatively simple operation of inserting the lever 84 into the opening 67 while the inclined portion 86 abuts against the engagement edge 68. The inclined portion 536, the first inclined portion 39, and the second inclined portion 38 of the sewing machine 1 also contribute to achieving the same effect as the inclined portion 86 of the sewing machine 1.

[0092] The wide table 7 of the sewing machine 1 is equipped with an unlocking member 90. The unlocking member 90 is connected to the lever 84 and supported on the table plate 71 so as to be movable from a first position to a second position. When the wide table 7 is attached to the bed 10, moving the unlocking member 90 from the first position to the second position causes the lever 84 to rotate from the normal position to the detachable position, thereby releasing the engagement between the hook 85 and the second attachment portion 132. The unlocking member 90 of the wide table 7 of the sewing machine 1 contributes to making the operation of rotating the lever 84 from the normal position to the detachable position a relatively simple operation of moving the unlocking member 90 from the first position to the second position. The unlocking members 45, 58 of the sewing machine 1 also contribute to achieving the same effect as the unlocking member 90.

[0093] The wide table 7 of the sewing machine 1 is provided with a spring 80 that biases the unlocking member 90 in a direction from the second position toward the first position. After an operation to move the unlocking member 90 from the first position to the second position is performed, the biasing force of the spring 80 contributes to moving the unlocking member 90 from the second position to the first position. The springs 30 and 550 of the sewing machine 1 also contribute to achieving the same effect.

[0094] The second mounting portion 132 includes an engagement edge 66 that defines an opening 65 formed in the second side panel 122. One of the short-side directions D1 is defined as an insertion direction K1. One of the long-side directions D2 is defined as a first direction N1, and the other is defined as a second direction N2. The levers of the wide table 3 of the sewing machine 1 include a second lever 34 and a first lever 35 that protrude in the insertion direction K1 from the table top 31. The second lever 34 has a second hook 36 that protrudes in the second direction N2. The second lever 34 is supported by the table top 31 so as to be rotatable between a second normal position and a second detachable position where the second hook 36 is positioned in the first direction N1 relative to the second normal position. After the second lever 34 is inserted into the opening 65, the second lever 34 rotates from the second detachable position to the second normal position, causing the second hook 36 to engage with the second mounting portion 132. The first lever 35 has a first hook 37 that protrudes in the first direction N1. The first lever 35 is supported by the table plate 31 so as to be rotatable between a first normal position and a first detachable position where the first hook 37 is positioned further in the second direction N2 than the first normal position. After being inserted into the opening 65, the first lever 35 rotates from the first detachable position to the first normal position, causing the first hook 37 to engage with the second attachment portion 132. The second lever 34 and the first lever 35 of the sewing machine 1 contribute to more reliably attaching the wide table 3 to the second attachment portion 132 of the bed 10 than when a single lever is used to engage with the second attachment portion 132.

[0095] The other side of the short-side direction D1 of the wide table 3 is defined as the removal direction K2. The wide table 3 has a second protrusion 461 and a first protrusion 462. When the second lever 34 is in the second normal position and the wide table 3 is moved in the second direction N2 relative to the bed 10, the second protrusion 461 abuts against the second removal end 342 of the second lever 34 in the removal direction K2. The second protrusion 461 is provided further in the second direction N2 than the second removal end 342. When the first lever 35 is in the first normal position and the wide table 3 is moved in the first direction N1 relative to the bed 10, the first protrusion 462 abuts against the first removal end 352 of the first lever 35 in the removal direction K2. The first protrusion 462 is provided further in the first direction N1 than the first removal end 352. The second convex portion 461 of the sewing machine 1 prevents the second lever 34 from rotating beyond the second normal position in the direction from the second detachment position toward the second normal position, and the first convex portion 462 contributes to preventing the first lever 35 from rotating beyond the first normal position in the direction from the first detachment position toward the first normal position.

[0096] The wide table 7 has legs 81 and 82. The leg 81 is connected to the table top 71 so as to be rotatable about a horizontally extending pivot shaft 811 between a vertically extending use position and a horizontally extending storage position. The leg 82 is connected to the table top 71 so as to be rotatable about a horizontally extending pivot shaft 821 between a vertically extending use position and a horizontally extending storage position. When the legs 81 and 82 are in the storage position, the legs 81 and 82 abut against the lever 84 or the unlocking member 90, preventing the unlocking member 90 from moving from the first position to the second position. The legs 81 and 82 of the sewing machine 1 contribute to preventing the wide table 7 from being attached to the second attachment portion 131 of the bed 10 when the legs 81 and 82 are in the storage position. The wide table 500 of the first modified example also achieves the same effect. The legs 541 and 542 of the wide table 500 also contribute to achieving the same effect as the legs 81 and 82 of the wide table 7.

[0097] Sewing machine 1 includes table sensor 20 that detects whether wide table 7 is attached to second mounting portion 131, table sensor 24 that detects whether wide table 3 is attached to second mounting portion 132, needle bar 6, and CPU 75. When it is determined based on the detection results of table sensors 20 and 24 that wide table 7 is attached to second mounting portion 131 and wide table 3 is attached to second mounting portion 132 (S6: YES), CPU 75 drives needle bar 6 in the vertical direction at a second speed that is faster than the first speed when no wide table is attached to second mounting portions 131, 132 (S7, S9). CPU 75 of sewing machine 1 contributes to automatically switching the sewing speed, taking into account that when wide table 3 is attached, the workpiece can be supported more stably than when wide table 3 is not attached.

[0098] The sewing machine 1 includes table sensors 20 and 24, an embroidery device 140, a frame sensor 22, a needle bar 6, and a CPU 75. The table sensor 20 detects whether the wide table 7 is attached to the second mounting portion 131. The table sensor 24 detects whether the wide table 3 is attached to the second mounting portion 132. The embroidery device 140 is an auxiliary device that can attach an embroidery frame 150 and has a horizontally movable holder 143, and is attached to the first mounting portion 130 of the bed 10. The frame sensor 22 detects the type of embroidery frame attached to the holder 143. When the wide table 3 is attached to the second mounting portion 132, the second extension surfaces 32 and 72, the bed surface 110, and the first extension surface 139 are located below the embroidery frame 150. If the CPU 75 determines based on the detection result of the frame sensor 22 that an embroidery frame 150 of a predetermined size is attached (S3: YES), it performs a notification process to notify the user that the wide table 7 needs to be attached to the second attachment portion 131 and that the wide table 3 needs to be attached to the second attachment portion 132 (S4). If the CPU 75 determines based on the detection result of the frame sensor 22 that an embroidery frame 150 of a predetermined size is attached, and if the CPU 75 determines based on the detection results of the table sensors 20, 24 that the wide tables 7, 3 corresponding to the second attachment portions 131, 132 are not attached (S6: NO), it performs a warning process to output a warning (S8). The CPU 75 of the sewing machine 1 contributes to increasing the likelihood that sewing will be performed under conditions in which the wide table 3 can support the embroidery frame 150 when a relatively large embroidery frame 150 is attached to the holder 143 and the embroidery frame 150 bends due to the weight of the sewing material.

[0099] The sewing machine 1 further includes an embroidery device 140, which is an auxiliary device that can be attached to the first attachment portion 130 of the bed 10 and has a holder 143 that can move horizontally and that can attach an embroidery frame 150. When the wide table 3 is attached to the second attachment portion 132, the second extension surface 32, the bed surface 110, and the first extension surface 139 are located below the embroidery frame 150. When the embroidery device 140 is attached to the sewing machine 1 and an item to be sewn that is larger than the bed surface 110 is sewn, the wide table 3 of the sewing machine 1 can support the embroidery frame that holds the item to be sewn with the bed 10 and the wide table 3, thereby contributing to easier sewing than conventional sewing machines 1.

[0100] The second mounting portion 630 of the sewing machine 1 of the second modified example is made up of first magnets 631 and 632. The table top 601 of the wide table 600 has second magnets 606 and 607, and the wide table 600 is mounted to the bed 10 by the magnetic force between the first magnets 631 and 632 and the second magnets 606 and 607. The second mounting portion 630 of the sewing machine 1 contributes to simplifying the configuration and operation for mounting the wide table 600.

[0101] The wide table 7 attached to the sewing machine 1 includes a table plate 71, legs 81 and 82, a lever 84, a hook 85, and an unlocking member 90. The table plate 71 has a second expansion surface 72, which is a table surface that extends horizontally perpendicular to the up-down direction. The legs 81 and 82 are connected to the table plate 71. The lever 84 protrudes beyond the table plate 71 in an insertion direction J1, which is one of the short directions D1 of the bed surface 110 that extends horizontally of the sewing machine 1. If one of the long directions D2 of the bed surface 110 is defined as a first direction N1 and the other as a second direction N2, the hook 85 protrudes in the first direction N1. The lever 84 is supported by the table plate 71 so as to be rotatable between a normal position and a detachable position in which the hook 85 is positioned in the second direction N2 from the normal position. The lever 84 extends downward from the outer periphery 19 of the bed surface 110 and is inserted in the insertion direction J1 through an opening 67 formed in a second side plate 121 intersecting the short-side direction D1. When the lever 84 is rotated from the detachable position to the normal position, the hook 85 engages with a second mounting portion 131 including an engagement edge 68 that defines the opening 67 of the sewing machine 1. The unlocking member 90 is connected to the lever 84 and is supported on the table plate 71 so as to be movable from a first position to a second position. When the unlocking member 90 is moved from the first position to the second position, the lever 84 rotates from the normal position to the detachable position, thereby releasing the engagement between the hook 85 and the second mounting portion 131 of the sewing machine 1. When sewing an item larger than the bed surface 110, the wide table 7 of the sewing machine 1 can be attached to the bed 10. This allows the item to be supported by the bed 10 and the wide table 7, thereby contributing to easier sewing than with conventional sewing machines. The wide table 7 of the sewing machine 1 is removably attached to the bed 10, so it is possible to switch between using the wide table 7 and not using it depending on the size of the sewing material. Therefore, compared to a case where the wide table 7 is not detachable from the bed 10, the wide table 7 of the sewing machine 1 can make the sewing machine 1 more compact and improve the ease of sewing relatively large materials. The lever 84 of the sewing machine 1 contributes to making the operation of engaging the lever 84 with the second attachment portion 131 a relatively simple operation of rotating the lever 84 from the attachment / detachment position to the normal position.The unlocking member 90 of the sewing machine 1 contributes to making the operation of rotating the lever 84 from the normal position to the detachable position a relatively simple operation of moving the unlocking member 90 from the first position to the second position. The wide table 3, 500 also contributes to achieving the same effect.

[0102] The present invention is not limited to the above-described embodiment and various modifications are possible. The present invention can be implemented in various forms, including a sewing machine system, a sewing machine program, a non-transitory computer-readable medium storing the sewing machine program, and a sewing machine control method. The sewing machine 1 may include at least one of the embroidery device 140, which can move the embroidery frame in the front-to-back and left-to-right directions, the auxiliary devices 170, 200, and the wide tables 3, 7, 500, and 600, or these may be omitted. The sewing machine 1 may be capable of mounting at least one wide table, and the wide table may be mounted on only one side of the bed 10 in the short direction D1. The sewing machine 1 may be capable of mounting at least one auxiliary device, and the configuration of the auxiliary device may be modified as appropriate. The sewing machine 1 may not include the holder 143 to which the embroidery frame 150 can be mounted and the embroidery device 140, but may instead move the sewing material using the feed dog 17 to perform sewing. The sewing machine 1 may be a dedicated embroidery sewing machine without the feed dog 17. The LCD 21 may be any display device capable of displaying an image, such as an organic EL display, a plasma display, a plasma tube array display, or an electronic paper display using electrophoresis, etc. The LCD 21 may be omitted as appropriate.

[0103] The shape and configuration of the bed 10 may be modified as appropriate. The sewing machine 1 may have the first attachment portion 130 on only one of the first side panels 111 and 113. The first attachment portion 130 may have an engaging protrusion that engages with an engaging hole of an auxiliary device. The sewing machine 1 may have only one of the second attachment portion 131 on the second side panel 121 and the second attachment portion 132 on the second side panel 122. The configuration of the wide tables 3, 7, 500, and 600 may be modified as appropriate. For example, the configuration, shape, number, and arrangement of the legs may be modified as appropriate, or may be omitted. The sewing machine 1 may have a second attachment portion that attaches the wide table to the back of the bed 10 using a magnet configuration similar to that of the wide table 600. The wide table may be box-shaped, and the legs may be omitted. The legs do not need to be supported so as to be rotatable between the storage position and the use position. The legs may be removably fixed to the table top. At least one of the second mounting portions 131, 132 may have an engaging protrusion that engages with an engaging hole in the wide table. At least one of the cover 69 of the second mounting portion 131 and the cover 62 of the second mounting portion 132 may be omitted, or may be rotatably supported above, to the left, or to the right of the corresponding engaging edge. At least one of the cover 69 of the second mounting portion 131 and the cover 62 of the second mounting portion 132 may not be biased by a spring. The cover 69 of the second mounting portion 131 and the cover 62 of the second mounting portion 132 may be removably attached to the corresponding engaging edge.

[0104] At least one of the second mounting portions 131, 132 may be disposed to the left of the first mounting portion 130 in the longitudinal direction D2. The shapes, arrangements, etc. of the first lever 35, the second lever 34, and the levers 59, 84 of the present invention may be modified as appropriate. For example, they may be disposed in the second direction N2 away from the center of the corresponding table top in the longitudinal direction D2. The shapes, arrangements, etc. of the hook 85, the first hook 37, and the second hook 36 may be modified as appropriate, or may be omitted as appropriate. The first lever 35 and the second lever 34 may not be bilaterally symmetrical to each other. The shapes of the first inclined portion 39, the second inclined portion 38, and the inclined portions 86, 536 may be modified as appropriate, or may be omitted as appropriate. The shapes and arrangements of the second protrusion 461 and the first protrusion 462 may be modified as appropriate, or may be omitted as appropriate. The wide table 7 may have a protrusion that abuts against the end of the lever 84 in the removal direction J2 and protrudes downward in the second direction N2 when the lever 84 is in the normal position and the wide table 7 is moved in the second direction N2 relative to the bed 10. The wide table 500 may also have a similar protrusion.

[0105] The shape, number, and arrangement of the second magnets 606, 607 may be changed as appropriate. The shape, number, and arrangement of the first magnets 631, 632 may be changed as appropriate. For example, there may be one second magnet, or three or more second magnets. When the wide table is equipped with multiple second magnets, the magnetic fields generated by adjacent second magnets may be different from each other or the same as each other. The same applies to the first magnets equipped in the sewing machine 1. The short-side direction D1, the long-side direction D2, the first direction N1, and the second direction N2 may each be changed depending on the configuration of the sewing machine 1.

[0106] The program including the instructions for executing the main processing of Fig. 20 may be stored in the storage device of each device before the CPU 75 executes the program. Therefore, the program acquisition method, acquisition path, and device storing the program may each be changed as appropriate. The program executed by the CPU 75 may be received from another device via a cable or wireless communication and stored in a storage device such as a memory unit. The other device may include, for example, a PC and a server connected via a network.

[0107] The steps of the main processing are not limited to being executed by the CPU 75, and some or all of them may be executed by other electronic devices (e.g., ASIC). The steps of the main processing may be distributed among multiple electronic devices (e.g., multiple CPUs). The order of the steps of the main processing may be changed, and steps may be omitted or added as necessary. The following modifications may be made to the main processing as appropriate.

[0108] The sewing machine 1 may omit some or all of the main processing. The sewing machine 1 may acquire the type of embroidery frame attached to the holder 143 based on the user's input in S2. The CPU 75 of the sewing machine 1 may output a message to an external device in at least one of S4 and S8, and the message may be notified by the external device. The CPU 75 may issue an audio notification in at least one of S4 and S8. At least one of S4 and S8 may be omitted, or sewing may be stopped after processing of S8. The CPU 75 may not issue a warning when it detects that at least one of the wide tables 3 and 7 is attached. The CPU 75 may omit processing of S3 and sew at the second speed when it detects that at least one of the wide tables 3 and 7 is attached, regardless of the size of the embroidery frame attached to the holder 143. The CPU 75 may change the sewing speed so that the sewing speed increases as the area on which the sewing workpiece is placed increases, depending on whether only the wide table 3 is attached, only the wide table 7 is attached, or both the wide tables 3 and 7 are attached.

[0109] The above-mentioned modifications may be combined as appropriate within the scope of the claims. The applicant intends to obtain patent rights for not only the combinations exemplified in the claims, but also for other combinations that do not deviate from the gist of the present invention and do not cause any contradictions. [Explanation of symbols]

[0110] 1: sewing machine, 6: needle bar, 10: bed, 11: leg column, 19: outer periphery, 110: bed surface, 3, 7, 500, 600: wide table, 20, 24: table sensor, 22: frame sensor, 30, 80, 550: spring, 31, 71, 531, 601: table board, 59, 84: lever, 32, 72, 532, 602: second extension surface, 35: first lever, 34: second lever, 37: first hook, 36: second hook, 39: first inclined portion, 38: second inclined portion, 86, 536: inclined portion, 45, 58, 90: unlocking member, 62, 69: cover, 65, 67: opening, 66, 68: engagement edge, 75: CPU, 41 to 43, 81, 82 , 541, 542, 604, 605: legs, 83, 340, 350, 557: ends, 85, 535: hooks, first side plates 111, 113: first side plates, 121, 122: second side plates, 130: first mounting portion, 131, 132, 630: second mounting portion, 140: embroidery device, 170, 200: auxiliary device, 143: holder, 150: embroidery frame, 352: first detachment end, 342: second detachment end, 461: second convex portion, 462: first convex portion, 606, 607: second magnet, 631, 632: first magnet, 811, 821: pivot shaft, D1: short direction, D2: long direction, N1: first direction, N2: second direction, J1: insertion direction, K1: insertion direction, J2, K2: detachment direction

Claims

1. bed Equipped with The bed is The bed surface extends horizontally, perpendicular to the vertical direction. a first side plate extending downward from the outer periphery of the bed surface and intersecting the longitudinal direction of the bed surface; a second side plate extending downward from the outer periphery of the bed surface and intersecting the short side direction of the bed surface; a first mounting portion provided on the first side plate, capable of mounting an auxiliary device having a first expansion surface that extends in the horizontal direction; a second mounting portion provided on the second side plate, to which a wide table having a second expansion surface that extends in the horizontal direction and a shape different from that of the auxiliary device can be mounted; A sewing machine comprising:

2. 2. The sewing machine according to claim 1, further comprising a wide table removably attached to the second attachment portion of the bed, the wide table having a table plate with the second extension surface.

3. the second mounting portion includes an engagement edge that defines an opening formed in the second side panel; When one of the short-side directions is defined as the insertion direction, the wide table has a lever that protrudes beyond the table board in the insertion direction and is supported by the table board, The sewing machine according to claim 2, wherein the lever is inserted into the opening in the insertion direction, and the wide table is attached to the bed by engaging the lever with the second attachment portion.

4. Further, a leg pillar extending in the vertical direction and connected to the bed is provided, The sewing machine according to claim 1 or 2, wherein the second attachment portion is provided between the first attachment portion and the leg post in the longitudinal direction.

5. 4. The sewing machine according to claim 3, wherein the bed includes a cover that closes the opening when the wide table is not attached to the bed.

6. the cover is supported by the bed so as to be rotatable between a closed position that closes the opening and an open position that opens the opening; When the wide table is attached to the bed, the cover is pushed in the insertion direction by the lever, and thereby rotates from the closed position to the open position.

6. The sewing machine according to claim 5.

7. When one of the longitudinal directions is a first direction and the other is a second direction, The lever has a hook that protrudes in the first direction, the lever is supported by the table plate so as to be rotatable between a normal position and a detachable position where the hook is positioned in the second direction from the normal position; The sewing machine according to claim 3, wherein after the lever is inserted from the opening in the insertion direction, the lever rotates from the detachable position to the normal position, thereby causing the hook to engage with the second attachment portion.

8. the lever has an inclined portion inclined in the longitudinal direction between the hook and an end of the lever in the insertion direction, The sewing machine of claim 7, characterized in that the lever rotates from the normal position to the detachable position by being inserted into the opening while the inclined portion abuts against the engagement edge, and after the hook of the lever is inserted in the insertion direction further than the opening, the lever rotates from the detachable position to the normal position, causing the hook to engage with the second attachment portion.

9. The sewing machine according to claim 7, further comprising an unlocking member connected to the lever and supported on the table plate so as to be movable from a first position to a second position, wherein when the wide table is attached to the bed, the unlocking member is moved from the first position to the second position, causing the lever to rotate from the normal position to the detachable position and releasing the engagement between the hook and the second attachment portion.

10. The sewing machine according to claim 9, further comprising a spring that biases the unlocking member in a direction from the second position toward the first position.

11. the second mounting portion includes an engagement edge that defines an opening formed in the second side panel; One of the short-side directions is defined as an insertion direction, When one of the longitudinal directions is a first direction and the other is a second direction, the wide table has a first lever and a second lever that protrude in the insertion direction beyond the table board, the first lever has a first hook protruding in the first direction, and is supported by the table plate so as to be rotatable between a first normal position and a first detachable position where the first hook is positioned in the second direction relative to the first normal position; the second lever has a second hook protruding in the second direction, and is supported by the table plate so as to be rotatable between a second normal position and a second detachable position where the second hook is positioned in the first direction relative to the second normal position; After the first lever is inserted into the opening, the first lever rotates from the first attachment / detachment position to the first normal position, whereby the first hook engages with the second attachment portion; After the second lever is inserted into the opening, the second lever rotates from the second attachment / detachment position to the second normal position, causing the second hook to engage with the second attachment portion.

3. The sewing machine according to claim 2.

12. When the other of the short-side directions is the removal direction, a first protrusion that abuts against a first removal end portion of the first lever in the removal direction when the first lever is in the first normal position and the wide table is moved in the first direction relative to the bed, and that protrudes downward in the first direction beyond the first removal end portion; a second protrusion that abuts against a second removal end portion of the second lever in the removal direction when the second lever is in the second normal position and the wide table is moved in the second direction relative to the bed, and that protrudes downward in the second direction beyond the second removal end portion; The sewing machine according to claim 11, further comprising:

13. the wide table has legs connected to the table board at a use position extending in the vertical direction and at a storage position extending in the horizontal direction, the legs being rotatable about a rotation axis extending in the horizontal direction; 10. The sewing machine according to claim 9, wherein when the leg is in the storage position, the leg and the lever abut against each other, preventing the unlocking member from moving from the first position to the second position.

14. a table sensor that detects whether the wide table is attached to the second attachment portion; and Needle stick and Control unit and Equipped with The control unit 2. The sewing machine according to claim 1, wherein, when it is determined based on the detection result of the table sensor that the wide table is attached to the second attachment section, the needle bar is driven in the up and down direction at a second speed that is faster than a first speed when the wide table is not attached to the second attachment section.

15. a table sensor that detects whether the wide table is attached to the second attachment portion; and an embroidery device as the auxiliary device, the auxiliary device having a holder to which an embroidery frame can be attached and which is movable in the horizontal direction, the embroidery device being attached to the first attachment portion of the bed; a frame sensor that detects the type of the embroidery frame attached to the holder; Needle stick and Control unit and Equipped with When the wide table is attached to the second attachment portion, the second extension surface, the bed surface, and the first extension surface are located below the embroidery frame, The control unit a notification process that notifies the user that the wide table needs to be attached to the second attachment section when the embroidery frame of a predetermined size is attached based on the detection result of the frame sensor; a warning process that outputs a warning when it is determined based on the detection result of the frame sensor that the embroidery frame of the predetermined size is attached and when it is determined based on the detection result of the table sensor that the wide table is not attached to the second attachment portion; 2. The sewing machine according to claim 1, wherein the sewing machine executes the following steps.

16. an embroidery device as the auxiliary device, the embroidery device having a holder to which an embroidery frame can be attached and which is movable in the horizontal direction, the embroidery device being attached to the first attachment portion of the bed; 2. The sewing machine according to claim 1, wherein when the wide table is attached to the second attachment portion, the second extension surface, the bed surface, and the first extension surface are located below the embroidery frame.

17. the second mounting portion is a first magnet, the table top of the wide table has a second magnet; 3. The sewing machine according to claim 2, wherein the wide table is attached to the bed by a magnetic force between the first magnet and the second magnet.

18. A wide table attached to a sewing machine, a table board having a table surface extending in a horizontal direction perpendicular to the up-down direction; legs connected to the table top; a lever protruding from the table plate in an insertion direction, which is one of the short sides of the bed surface of the sewing machine that extends in the horizontal direction, When one of the longitudinal directions of the bed surface is defined as a first direction and the other is defined as a second direction, a hook protruding in the first direction; the hook is supported by the table plate so as to be rotatable between a normal position and a detachable position in which the hook is positioned in the second direction from the normal position, The hook extends downward from the outer periphery of the bed surface and is inserted in the insertion direction through an opening formed in a side plate that intersects with the short direction. Then, the hook rotates from the attachment / detachment position to the normal position, whereby the hook engages with a mounting portion that includes an engagement edge that defines the opening of the sewing machine. The lever; an unlocking member connected to the lever and supported on the table plate so as to be movable from a first position to a second position, the unlocking member rotating the lever from the normal position to the detachable position when moved from the first position to the second position, thereby releasing the engagement between the hook and the mounting portion; A wide table characterized by comprising:

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