JP2005334030A - Embroidery frame mounting mechanism of embroidery sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect a half insertion state in the case of mounting an embroidery frame on the connection receiving part of a carriage connected to the driving mechanism of an embroidery sewing machine and to prevent sewing deviations. <P>SOLUTION: The embroidery frame mounting mechanism of the embroidery sewing machine is provided with the connection receiving parts 48 and 49 formed on an X direction carriage 40 for moving the embroidery frame for detachably mounting the connection engaging part of the embroidery frame and lock mechanisms 46 and 47 for locking the connection engaging part in the state of mounting the connection engaging part of the embroidery frame on the connection receiving parts 48 and 49, and the state that the lock mechanisms 46 and 7 lock the connection engaging part to the connection receiving parts 48 and 49 is detected by a lock state detection switch 71. The respective lock mechanisms 46 and 47 are provided with lock members 54b and 64b for locking the connection engaging part, coil springs 56 and 66 for elastically energizing the lock members 54b and 64b to a lock position, and operation levers 54c and 64c integrally formed on the lock members 54b and 64b for operating the lock members 54b and 64b from the lock position to an unlock position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an embroidery frame mounting mechanism of an embroidery sewing machine, and more particularly to a mechanism capable of detecting a locked state at a normal position when an embroidery frame holding a work cloth is mounted on a carriage.

  Conventionally, various embroidery sewing machines have been proposed and put into practical use in which various embroidery patterns can be applied to a flat cloth held by an embroidery frame by mounting a rectangular embroidery frame. For example, a sewing device described in Japanese Patent Application Laid-Open No. 2002-315982 is provided with a lock mechanism for releasably locking a connecting portion of an embroidery frame (embroidery frame) on a carriage provided in the embroidery frame transfer device. When three detection switches are attached to the lock member of the mechanism and the embroidery frame is mounted on the embroidery frame transfer device via the lock mechanism, the type of the embroidery frame depends on the arrangement pattern of the detected portion provided on the embroidery frame. Is detected (see, for example, Patent Document 1).

JP 2002-315982 A (pages 3 to 5, FIGS. 2 and 10)

  In the sewing device described in Patent Document 1 described above, the type of the embroidery frame is detected by the detection switch when the embroidery frame is mounted on the sewing machine embroidery frame transfer device via the lock mechanism. The lock mechanism does not detect whether the embroidery frame is securely locked in the locked state. Therefore, for example, when the embroidery sewing is performed in a state where the embroidery frame is not securely locked, that is, in a so-called half-insertion state, there is a problem that the embroidery frame rattles and sewing deviation occurs.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 1 is an embroidery frame mounting mechanism for an embroidery sewing machine that is mounted on a carriage that moves an embroidery frame that holds a work cloth to be embroidered in a stretched manner. A connection receiving portion for detachably mounting the joint portion is provided, and a detecting means for detecting a state in which the connection engaging portion of the embroidery frame is mounted at a normal position is provided in the connection receiving portion.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 2 is the lock mechanism for locking the connection engaging portion with respect to the connection receiving portion according to the invention of claim 1, wherein the connection engagement portion is in a normal position. And a detecting means for detecting that the coupling engaging portion is mounted at a normal position based on the locking mechanism being positioned at the locking position. is there.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to a third aspect of the present invention is the embroidery frame mounting mechanism according to the second aspect, wherein the connection engaging portion has a plurality of connection engagement portions spaced from each other, and the connection receiving portion has a plurality of connection engagement portions. A plurality of connection receiving portions that receive the corresponding connection receiving portions, and the lock mechanism moves to the lock position in a state in which any of the plurality of connection engaging portions is attached to the corresponding connection receiving portions. Is.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to a fourth aspect is the invention according to the third aspect, wherein two sets of the connection engaging portion and the connection receiving portion corresponding to the connection engagement portion are provided. .

  An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 5 is an embroidery frame mounting mechanism for an embroidery sewing machine that is mounted on a carriage that moves an embroidery frame that holds a work cloth to be embroidered in a stretched state. A connection receiving portion for detachably mounting the connection engagement portion, a lock mechanism for locking the connection engagement portion in a state where the connection engagement portion of the embroidery frame is mounted on the connection reception portion, and a lock mechanism is the connection reception portion And a detecting means for detecting a state where the coupling engaging portion is locked.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to a sixth aspect of the present invention is the embroidery frame mounting mechanism according to the fifth aspect, wherein the lock mechanism includes a lock member that locks the coupling engagement portion and an elastic member that elastically biases the lock member to the lock position. And an operation lever that is integrally formed with the lock member and operates the lock member from the locked position to the unlocked position.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to a seventh aspect of the present invention is the embroidery frame mounting mechanism according to the sixth aspect, wherein the embroidery frame has a pair of connection engaging portions spaced apart from each other, and the carriage corresponds to the pair of connection engagement portions. It has a pair of connection receiving portions, a pair of lock mechanisms, and a pair of operation levers.

  An embroidery frame mounting mechanism for an embroidery sewing machine according to an eighth aspect of the present invention is the embroidery frame mounting mechanism according to the seventh aspect, wherein the detection means includes a detection interlocking member operatively connected to a pair of lock members, and the detection interlocking member. A switch operation unit provided and a detection switch operated by the switch operation unit are provided.

  The embroidery frame mounting mechanism of the embroidery sewing machine according to claim 9 is the invention according to claim 6 or 7, wherein the operation lever is held in a predetermined posture when the lock mechanism is in the locked state, and the lock mechanism is in the locked state. If not, the posture is different from the predetermined posture.

  According to the first aspect of the present invention, in the embroidery frame mounting mechanism of the embroidery sewing machine that is mounted on the carriage that moves the embroidery frame that holds the work cloth to be embroidered in a stretched form, the connecting and engaging portion of the embroidery frame can be attached to and detached from the carriage. Since the connection receiving portion for attaching the embroidery frame is provided, and the detection means for detecting the state in which the connection engaging portion of the embroidery frame is mounted at a normal position is provided in the connection receiving portion. When the connection receiving portion is attached to the connection receiving portion, it is possible to detect the attachment state in which the connection engaging portion is attached at a normal position, and the state in which the embroidery frame is not sufficiently attached to the connection receiving portion, so-called half-inserted state. This can be prevented in advance, and embroidery stitching misalignment can be reliably prevented.

  According to a second aspect of the present invention, there is provided a lock mechanism for locking the connection engaging portion with respect to the connection receiving portion, wherein the lock is moved to the lock position in a state where the connection engagement portion is mounted in a normal position. And the detecting means detects that the coupling engagement portion is mounted at a normal position based on the locking mechanism being positioned at the lock position, so that the connection engagement portion is mounted at the normal position. Can be reliably detected based on the movement of the lock mechanism to the lock position. Other effects similar to those of the first aspect are obtained.

  According to a third aspect of the present invention, the connection engagement portion has a plurality of connection engagement portions spaced from each other, and the connection receiving portion corresponds to each of the plurality of connection engagement portions and receives a plurality of connection engagement portions. The locking mechanism includes a connection receiving portion, and the lock mechanism moves to the lock position in a state where all of the plurality of connection engaging portions are attached to the corresponding connection receiving portions. The embroidery frame can be mounted in a stable posture, and the lock mechanism moves to the lock position, thereby reliably detecting that all of the connection engaging portions are mounted on the corresponding connection receiving portions. Can do. Other effects similar to those of the second aspect are achieved.

  According to the invention of claim 4, since the two sets of the coupling engaging portion and the coupling receiving portion corresponding to the coupling engaging portion are provided, even if the embroidery frame is relatively large, these By combining the two sets of connection engaging portions and the connection receiving portions, the embroidery frame can be easily mounted on the connection receiving portions through these connection engaging portions in a stable posture and only by two sets of mounting operations. Other effects similar to those of the third aspect are achieved.

  According to the fifth aspect of the present invention, in the embroidery frame mounting mechanism of the embroidery sewing machine that is mounted on the carriage that moves the embroidery frame that holds the work cloth to be embroidered in a stretched form, the connecting engagement portion of the embroidery frame formed on the carriage is provided. A connection receiving portion for detachably mounting, a lock mechanism for locking the connection engagement portion in a state where the connection engagement portion of the embroidery frame is mounted on the connection reception portion, and the lock mechanism connected to the connection reception portion Since the detecting means for detecting the locked state is provided, the locked state by the locking mechanism can be detected when the connection engaging portion of the embroidery frame is mounted on the connection receiving portion of the carriage. Has the same effect as.

  According to the invention of claim 6, the lock mechanism includes a lock member that locks the coupling engagement portion, an elastic member that elastically biases the lock member to the lock position, and a lock member that is integrally formed with the lock member. Since the operation lever for operating from the position to the unlocking position is provided, when the connection engagement portion of the embroidery frame is mounted on the connection receiving portion of the carriage, the lock member is elastically biased to the lock position by the elastic member, The lock member can be locked and held at the lock position, and the locked state of the lock member can be easily released simply by operating the operation lever as necessary. Other effects similar to those of the fifth aspect are obtained.

  According to a seventh aspect of the present invention, the embroidery frame has a pair of connection engaging portions spaced apart from each other, and the carriage has a pair of connection receiving portions corresponding to the pair of connection engagement portions and a pair of lock mechanisms. And a pair of operation levers, when the embroidery frame has a pair of connection engagement portions, a pair of connection reception portions corresponding to the pair of connection engagement portions by a pair of lock mechanisms. The pair of connection engaging portions can be easily unlocked by releasing the pair of operation levers. Other effects similar to those of the sixth aspect are achieved.

  According to an eighth aspect of the present invention, the detection means includes a detection interlocking member operatively connected to a pair of lock members, a switch operating portion provided on the detection interlocking member, and the switch operating portion. Since the detection switch to be operated is provided, when a pair of connection engaging portions are mounted and locked to a corresponding pair of connection receiving portions, the detection interlocking member and the switch operation portion provided on the detection connection member are provided. Since it does not operate, the detection switch does not operate.

  However, if one of the pair of connection engaging parts cannot be attached to the corresponding connection receiving part and is not locked, the detection interlocking member and the switch operating part provided on it are activated, and the detection Since the switch cannot detect the locked state, the so-called half-insertion state of the embroidery frame can be detected. Other effects similar to those of the seventh aspect are achieved.

  According to a ninth aspect of the present invention, the operation lever is held in a predetermined posture when the lock mechanism is in a locked state, and is in a posture different from the predetermined posture when the lock mechanism is not in a locked state. Therefore, the user can visually check the position of the control lever and confirm the lock state of the lock mechanism in the predetermined position, while the lock mechanism is locked when the position is different from the predetermined position. It can be confirmed that it is not in a state. Other effects similar to those of the sixth or seventh aspect are achieved.

  The embroidery frame mounting mechanism of the embroidery sewing machine according to the present embodiment is configured to detect the locked state of the coupling engagement portion by the lock mechanism when the coupling engagement portion of the embroidery frame is mounted on the coupling receiving portion of the X direction carriage. is there.

  As shown in FIG. 1, the embroidery sewing machine 1 is placed on a work table 9 or the like, and has a horizontal base portion 2 and a pedestal portion 3 erected in the vertical direction at the rear end portion of the base portion 2. A cylinder bed 4 horizontally extending forward from the pedestal 3 and an arm 5 extending forward from the upper end of the pedestal 3 are provided. Here, let the horizontal direction orthogonal to the length direction of a cylinder bed part be X direction (left-right direction), and let the length direction of a cylinder bed part be Y direction (front-back direction).

  Although not shown, the arm portion 5 is provided with a main shaft driven by a sewing machine motor, a needle bar vertical drive mechanism for moving the sewing needle 7 up and down via the needle bar 6, a scale drive mechanism, and the like. Although not shown in the drawings, the cylinder bed 4 is provided with a thread catcher that forms a seam in cooperation with the sewing needle 7, a thread trimming mechanism that cuts the upper thread and the lower thread at the end of sewing, and the like. Yes. Further, the pedestal 3 is provided with a hand pulley 8 for rotating the main shaft by an operator's manual operation to move the sewing needle 7 up and down.

  Next, a Y-direction carriage 21 that is mounted with an embroidery frame 11 that holds a flat cloth and rotatably supports a cylindrical frame that holds a cylindrical cloth such as a sleeve will be described with reference to FIGS. To do. However, the Y-direction drive mechanism for moving the Y-direction carriage 21 on which the embroidery frame 11 and the cylindrical frame are mounted in the Y direction is arranged from the pedestal portion 3 to the base portion 2, but the Y direction Since the drive mechanism is not directly related to the present invention, the description thereof is omitted.

  As shown in FIGS. 2 to 3, the Y-direction carriage 21 includes a base plate 22 that is wide in the left-right direction and is vertically oriented, and a substantially L-shaped carriage support plate 23 that is fixed to the upper end of the base plate 22. And is driven to move in the Y direction by the Y direction driving mechanism. The base plate 22 of the Y-direction carriage 21 is equipped with an X-direction carriage 40 (this corresponds to a carriage that moves the embroidery frame).

  First, a drive mechanism for moving and driving the X-direction carriage 40 in the X-direction will be described. As shown in FIGS. 2 to 4, a carriage support plate 23 having a substantially L shape in side view is formed on the upper end portion of the base plate 22. The vertical wall portion 23a is fixed, the left and right end portions of the horizontal wall portion 23b of the carriage support plate 23 are partially bent downward, and both end portions of the guide shaft 24 extending in the left-right direction are supported. In the vertical wall portion 23a, a guide rail portion 23c extending in the left-right direction, which is formed by cutting a part of the vertical wall portion 23a forward, is formed to project forward.

  A guide support portion 41a that is one step higher in a crank shape when viewed from the side is integrally formed at the rear end portion of the center portion in the left-right direction of a carriage base plate 41, which will be described later. Moreover, the rail groove formed in the guide block 43 fixed to the upper surface of the guide support portion 41a is supported so as to be movable in the left-right direction by engaging the guide rail portion 23c from the front.

  Pulleys 25 and 27 are rotatably supported by pivot shafts 26 and 28 at both left and right ends of the carriage support plate 23, and a timing belt 29 is stretched over the pulleys 25 and 27. Here, the front end of the guide block 43 is connected to a part of the timing belt 29. Here, a large-diameter second driven gear 30 is integrally formed on the right pulley 25, and a first driven gear 31 that meshes with the second driven gear 30 is pivotally supported on the carriage support plate 23. ing. A carriage drive motor 32, which is a stepping motor, is attached to the rear surface of the base plate 22, and a drive gear 33 fixed to the drive shaft is engaged with the first driven gear 31.

  Therefore, when the carriage drive motor 32 is driven to rotate, the X-direction carriage 40 is supported by the guide shaft 24 and the guide rail portion 23 c via the first and second driven gears 30 and 31 and the timing belt 29. It is designed to move left and right.

  The X-direction carriage 40 includes a horizontal flat carriage base plate 41 and a substantially U-shaped support member 42 fixed to the upper surface of the carriage base plate 41. The embroidery frame holds a work cloth to be embroidered in a stretched shape. 11 is provided with an embroidery frame mounting mechanism 45 or the like for moving 11 in two orthogonal directions, that is, in the X and Y directions.

  The embroidery frame mounting mechanism 45 provided on the X direction carriage 40 will be described. The embroidery frame mounting mechanism 45 includes a pair of left and right lock mechanisms 46 and 47 formed on the X-direction carriage 40, a pair of left and right connection receiving portions 48 and 49, and a mounting state detection mechanism that detects the mounting state of the embroidery frame 11. 50 etc.

  First, the left and right pair of lock mechanisms 46 and 47 will be described. However, since the pair of lock mechanisms 46 and 47 are the left and right objects and have the same configuration, the right lock mechanism 46 will be described. Here, the lock mechanisms 46 and 47 lock the connection engaging portions 14 and 15 in a state where the connection engaging portions 14 and 15 of the embroidery frame 11 are mounted on the connection receiving portions 48 and 49.

  Here, as shown in FIG. 5, the embroidery frame 11 is parallel to the outer frame 12, a rectangular frame-shaped outer frame 12, an inner frame 13 in which a work cloth is nipped in the outer frame 12, and the outer frame 12. It has a pair of left and right connecting engagement parts 14, 15 etc., which are fixedly spaced apart. Each of the coupling engaging portions 14 and 15 is a metal plate member, and each of the coupling engaging portions 14 and 15 has rectangular engagement holes 14a and 15a into which the engaging portions 54d of the frame holding lever 54 can be fitted. Is formed.

  A gate-shaped frame holding member 52 having a predetermined width and height into which the right connection engaging portion 15 of the embroidery frame 11 can be inserted is fixed to the right end portion of the upper surface of the carriage base plate 41. A rectangular cutout hole 52a is formed on the upper surface. Here, a right-side connection receiving portion 48 is formed which is a passage formed by the carriage base plate 41 and the frame holding member 52 and for detachably mounting the connection engagement portion 14 of the embroidery frame 11. .

  A frame holding lever 54 is pivotally supported via a pivot pin 55 in the front-rear direction on an L-shaped support fitting 53 fixed to the upper surface of the carriage base plate 41 in a side view. 2 and 4, the frame holding lever 54 includes a fulcrum part 54a near the pivot pin 55, a lock member 54b on the left side including the fulcrum part 54a, and the lock member 54b. And an outer operation lever 54c.

  An engaging portion 54d projecting downward is integrally formed at the left end portion of the lock member 54b, and is fitted into the notch hole 52a. Therefore, the frame holding lever 54 (lock member 54b) can be rotated around the axis in the front-rear direction (around the axis parallel to the mounting direction of the embroidery frame 11) by the fulcrum portion 54a.

  The lock member 54b of the frame holding lever 54 is a coil spring 56 wound around a left and right spring receiving pin 55 fixed to the support fitting 53 on the immediate rear side thereof (this elastically biases the lock member 54b to the lock position). The lock member 54b is biased to the lower lock position by a spring force (corresponding to an elastic member).

  In addition, an inclined guide surface is formed on the lower end portion of the front portion of the engaging portion 54d so that the coupling engaging portion 15 can be easily inserted from the front. A release operation portion 54f for releasing the locked state of the coupling engagement portion of the embroidery frame 11 is integrally formed at the right end portion of the operation lever 54c formed integrally with the lock member 54b.

  In a normal case where the release operation portion 54 f is not operated, the frame holding lever 54 is held by the coil spring 56 at a substantially horizontal lock position where the lower end surface of the lock member 54 b is in contact with the upper surface of the frame holding member 52. However, when the release operation portion 54f is pushed downward against the spring force of the coil spring 56, the lock member 54b can swing from the substantially horizontal lock position to the upper lock release position via the fulcrum portion 54a. Yes.

  As described above, when the lock member 54b swings to the unlock position, the locked state of the coupling engagement portion 14 can be released. Incidentally, an inverted U-shaped position regulating spring body 57 is screwed to the frame holding member 52 so as to be positioned at the rear end of the frame holding member 52. By the way, when the coupling engaging portion 14 of the embroidery frame 11 is mounted at the normal position of the right coupling receiving portion 48, the position regulating spring body 57 is pressed backward at the rear end of the coupling engaging portion 14, so that the position regulating spring The connecting engagement portion 14 is elastically biased forward by the spring force of the position restricting spring body 57 by the body 57.

  The left lock mechanism 47 is also provided on the left and right sides of the right lock mechanism 46, and has a notch hole 62a and a frame holding member 62 that forms an engagement receiving portion 49, and a support fitting 63 via a pivot pin 65. A lock holding member 64b having an engaging portion 64d and a fulcrum portion 64a and an operation lever 64c are integrally formed, and a frame holding lever 64 elastically urged by a coil spring 66 is provided.

  Further, the position regulating spring body 67 is screwed to the frame holding member 62 so as to be positioned at the rear end of the frame holding member 62. Here, the carriage base plate 41 and the frame holding member 62 form a left connection receiving portion 49 that is a passage in which the connection engaging portion 15 of the embroidery frame 11 can be detachably mounted.

  Next, the mounting state detection mechanism 50 will be described. The mounting state detection mechanism 50 is operated by the detection interlocking member 70 operatively connected to the pair of lock members 54b, the switch operation unit 70a provided in the detection interlocking member 70, and the switch operation unit 70a. The detection switch 71 is provided.

  First, the detection interlocking member 70 operatively connected to the pair of left and right lock members 54b and 64b will be described.

  As shown in FIGS. 2, 4, and 7, the detection interlocking member 70 is made of synthetic resin, and is formed into a right-and-left target crank shape in which the right connecting portion 70b and the left connecting portion 70c are integrally connected. In the pivot wall 70d at the center, it is pivotally supported by pivot shafts 72 supported on the front end portions of the support member 42, and the horizontal lock detection position and the lock non-detection that swings upward are detected. It is possible to switch to the position.

  The detection interlocking member 70 is further biased downward at the rear end portions of the right and left connecting portions 70b and 70c by the spring force of the coil spring 73 wound around the pivot shaft 72, and the right connecting portion 70b. The rear end portion contacts the left end portion of the right lock member 54b from above, and the rear end portion of the left connecting portion 70c contacts the right end portion of the left lock member 64b from above.

  A switch operating portion 70a is integrally formed in a rearward projecting manner at the rear end of the interlocking member 70 for detection on the left side with respect to the left side. When the switch operating portion 70a is in the horizontal position on the right side of the switch operating portion 70a. A lock state detection switch 71 that outputs an “L” level signal and outputs an “H” level signal at the swinging position swinging upward is fixed to the support member 42 by a mounting bracket.

  Here, the control system of the lock state detection control using the lock state detection signal output from the lock state detection switch 71 will be briefly described. As shown in FIG. 6, the CPU, ROM, RAM, input / output port, etc. A lock state detection switch 71 is connected to a control unit (microcomputer) 75 having a switch group 76a composed of a plurality of switches and an operation panel 76 having a display 76b.

  The control unit 75 controls the entire embroidery sewing machine 1 while executing lock state detection control according to the present invention. In the lock state detection control, as shown in FIG. 7, the output of the lock state detection switch 71 changes from “L” level signal when the embroidery frame 11 is not mounted to “H” during the embroidery frame 11 mounting operation. Instead of the level signal, the embroidery frame 11 is securely mounted at the normal position, and the coupling engaging portions 14 and 15 are securely locked by the lock members 54b and 64b, and the signal is changed to the “L” level signal again. Thus, the locked state in which the coupling engaging portions 14 and 15 are locked is detected.

  Incidentally, a cylindrical frame driving body 78 is rotatably supported by the Y-direction carriage 21, and a cylindrical frame (not shown) can be detachably attached to the cylindrical frame driving body 78, but this is not directly related to the present invention. Therefore, the description is omitted.

  Next, the operation and effect of the embroidery frame mounting mechanism 45 configured as described above will be described.

  When the embroidery frame 11 is mounted, as shown in FIG. 4, the left and right connection engaging portions 14 and 15 of the embroidery frame 11 are simultaneously pushed into the corresponding connection receiving portions 48 and 49, respectively. At this time, the rear ends of the coupling engaging portions 14 and 15 move backward while abutting against the inclined surfaces 64e (only the left side is shown) of the engaging portions of the lock members 54b and 64b. As described above, the locking members 54b and 64b are swung to the upper unlocking position (see FIG. 9) with the fulcrum portions 54a and 64a as the rotation centers by the inclined surfaces 64e of the engaging portions, and the operation levers 54c and 64c are moved downward. Rocks.

  In this state, the detection interlocking member 70 has the connecting portions 70b and 70c on both the left and right sides thereof responding to the upward swinging of the distal end portions of the lock members 54b and 64b, and the pivot shaft 72 as the center of rotation. As shown in FIG. 9, the lock position is switched to the lock non-detection position where the rear side swings upward. At this time, the lock state detection switch 71 outputs an “H” level lock state detection signal instead of the “L” level signal by the operation of the switch operation unit 70a.

  Thereafter, when the left and right engaging portions 54d and 64d correspond to the engaging holes 14a and 15a of the connecting engaging portions 14 and 15, as shown in FIGS. 10 to 12, the engaging portions 54d and 64d are connected to each other. Since the left and right lock members 54b and 64b are returned to the horizontal lock detection position because they are fitted in the engagement holes 14a and 15a of the joint portions 14 and 15, respectively, the detection interlocking member 70 is also in the original lock position. To turn.

  As a result, since the lock state detection switch 71 is not operated by the switch operation unit 70a, the lock state detection switch 71 outputs an “L” level lock state detection signal instead of the “H” level signal. At this time, as shown in FIG. 12, each position regulating spring body 57, 67 elastically biases the rear end of the corresponding coupling engagement portion 14, 15 forward by a spring force.

  Therefore, as shown in FIG. 11, the left lock member 64b will be described. The front end of the engagement portion 15b between the engagement hole 15a and the rear end of the connection engagement portion 15 is the spring of the position regulating spring body 67. The force is pressed against the rear end of the lock member 64d and positioned in the front-rear direction. Similarly, on the right side, the engagement portion 14b between the engagement hole 14a and the rear end of the connection engagement portion 14 is used. The front end of the embroidery frame 11 is pressed and brought into contact with the rear end of the lock member 54d by the spring force of the position restricting spring body 57 to position the front / rear direction, so that the backlash in the front / rear direction of the embroidery frame 11 can be eliminated.

  As described above, when the coupling engaging portions 14 and 15 of the embroidery frame 11 are securely locked to the coupling receiving portions 48 and 49 by the locking members 54b and 64b via the engagement holes 14a and 15a, respectively, Each of the members 54b and 64b returns to the horizontal lock position, the detection interlocking member 70 rotates to the original lock detection position, and the lock state detection signal from the lock state detection switch 71 changes from “L” level to “ Since it is switched from the “H” level to the “L” level, the control unit detects a locked state in which the embroidery frame 11 is mounted and locked at a normal position.

  On the other hand, as shown in FIG. 13, the right side lock member 54b is normally locked and switched to the locked position, but the left side lock member 64b is not locked (see FIG. 9), so-called half-inserted state. When this occurs, since the left connecting portion 70c is rocked and held in response to the upward rocking of the tip of the left lock member 64b, the detection interlocking member 70 is switched to the lock non-detection position. It is in the state.

  In this case, since the lock state detection signal from the lock state detection switch 71 is switched from the “L” level to the “H” level, the control unit 75 does not switch to the “L” level. The half-inserted state of the frame 11 is detected, and an error is displayed on the display 76b.

  On the contrary, the left lock member 64b is normally locked and switched to the locked position, but when the right lock member 54b is not locked, a so-called half-insertion state occurs in the same manner. The detection interlocking member 70 is switched to the lock non-detection position. Also in this case, since the lock state detection signal from the lock state detection switch 71 is at “H” level, the control unit 75 similarly displays an error on the display 76b.

  Therefore, referring to the error display displayed on the display 76b, the user notices the half-insertion state of the embroidery frame 11, and makes sure that the embroidery frame 11 is fully pushed into the back to realize a normal lock state. Can do. As described above, since the half-insertion state of the embroidery frame 11 can be reliably detected, it is possible to prevent misalignment.

  By the way, the fulcrum portions 54a and 64a of the lock members 54b and 64b are pivots parallel to the mounting direction when the connection engaging portions 14 and 15 of the embroidery frame 11 are mounted to the connection receiving portions 48 and 49, that is, the front-rear direction. The portions that can be rotated by the support pins 55 and 65 and are in contact with the lock members 54d and 64d in the engaging portions 14b and 15b of the coupling engaging portions 14 and 15 from the rear are driven by the spring force of the position restricting spring body 57. The spring force of the position restricting spring body 57 does not act on the lock members 54d and 64d in the unlocking direction because they are pressed forward in parallel with the pivot pins 55 and 65.

  When the embroidery frame 11 is to be removed, by operating the operation lever 54c of the frame holding lever 54 downward, the engagement between the engagement portion 54d and the engagement holes 14a and 15a is released. Since 15 is pushed forward by the position regulating spring body 57, the embroidery frame 11 can be pulled out and removed.

  The embroidery frame 11 has a pair of connection engaging portions 14 and 15 spaced apart from each other, and the X-direction carriage 40 has a pair of connection receiving portions 48 and 49 corresponding to the pair of connection engagement portions 14 and 15. Since the pair of locking mechanisms 46 and 47 and the pair of operation levers 54c and 64c are provided, the pair of coupling engaging portions 14 and 15 are connected to the corresponding pair of coupling mechanisms 46 and 47 by a pair of coupling receiving portions. The pair 48 and 49 can be mounted and locked, and the 14 and 15 locked states of the pair of coupling engagement portions can be easily released by releasing the pair of operation levers 54c and 64c.

  Further, as detection means, a detection interlocking member 70 operatively connected to the pair of lock members 54b and 64b, a switch operating portion 70a provided on the detection interlocking member 70, and 70a operation by the switch operating portion. Since the lock state detection switch 71 is provided, when the pair of connection engaging portions 14 and 15 are attached to the corresponding pair of connection receiving portions 48 and 49 and can be locked, the interlocking member for detection is used. 70 and the switch operating portion 70a provided on the switch 70 do not operate, so that the lock state detection switch 71 does not operate.

  However, if any one of the pair of connection engaging portions 14 and 15 cannot be securely attached to the corresponding pair of connection receiving portions 48 and 49 and is not locked, the detection interlocking member 70 and Since the provided switch operation unit 70a is activated and the lock state detection switch 71 cannot detect the lock state, the so-called half-inserted state of the embroidery frame 11 can be reliably detected.

  Further, the coupling engaging portions 14 and 15 have a pair of coupling engaging portions 14 and 15 spaced apart from each other, and the coupling receiving portions 48 and 49 also receive the corresponding ones of the coupling engaging portions 14 and 15. A pair of connection receiving portions 48 and 49, and the lock mechanisms 46 and 47 are mounted on the corresponding pair of connection receiving portions 48 and 49, respectively. Therefore, even a relatively large embroidery frame 11 can be mounted in a stable posture and with a simple mounting operation via a pair of connecting engagement portions 14 and 15 spaced apart from each other, and a locking mechanism. By moving 46 and 47 to the lock position, it is possible to reliably detect that all of the coupling engaging portions 14 and 15 are attached to the corresponding coupling receiving portions 48 and 49.

  The operation levers 54c and 64c are held in a horizontal posture (lock detection position) when the lock mechanisms 46 and 47 are in the locked state, and are in a horizontal posture when the lock mechanisms 46 and 47 are not in the locked state. Are configured to have different swinging postures (lock non-detection positions), the user visually observes the postures of the operation levers 54c and 64c, and in the horizontal posture, locks the lock mechanisms 46 and 47. On the other hand, in the swinging posture, it can be confirmed that the lock mechanisms 46 and 47 are not in the locked state.

  Next, a modified form of the embodiment will be described.

  1] The embroidery frame mounting mechanism 45 is configured to mount the embroidery frame 11 having a pair of left and right connection engaging portions 14a and 15a. However, the embroidery frame mounting mechanism 45 is not a flat frame such as a hat frame having a pair of connection engagement portions. You may comprise so that an embroidery frame may be mounted | worn.

  2] The number of connecting and engaging portions of the embroidery frame 11 may be three or more depending on the size. In this case, three or more connection receiving portions and lock mechanisms provided in the X direction carriage 40 may be provided.

  3) The lock mechanism may be provided with a lock mechanism that employs various lock methods such as a slide method that slides in the front-rear direction or the left-right direction, instead of the lock method that switches the lock member to the lock position. .

  4] The present invention is not limited to the embodiments described above, and those skilled in the art can implement the present invention with various modifications without departing from the spirit of the present invention. The present invention includes such modifications.

1 is a side view of an embroidery sewing machine according to an embodiment of the present invention. It is a perspective view of a X direction carriage. It is a side view of a X direction carriage. It is a top view of a X direction carriage. It is a top view of an embroidery frame. It is a block diagram of a control system of lock state detection control. It is a figure which shows the output signal of a lock state detection switch. FIG. 5 is a vertical front view taken along the line HH in FIG. 4. It is the II sectional view vertical side view of FIG. It is the JJ line vertical front view of FIG. It is a KK line vertical side view of FIG. FIG. 5 is a view corresponding to FIG. 4 with an embroidery frame attached. It is the MM line vertical front view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Embroidery sewing machine 11 Embroidery frame 14, 15 Connection engaging part 40 X direction carriage 45 Embroidery frame mounting mechanism 46, 47 Lock mechanism 48, 49 Connection receiving part 54b, 64b Lock member 54c, 64c Operation lever 56, 66 Coil spring 70 For detection Interlocking member 70a Switch operation unit 71 Lock state detection switch

Claims (9)

In an embroidery frame mounting mechanism of an embroidery sewing machine that is mounted on a carriage that moves an embroidery frame that holds a work cloth to be embroidered in a stretch shape,
A connection receiving portion for detachably mounting the connection engagement portion of the embroidery frame on the carriage is provided,
An embroidery frame mounting mechanism for an embroidery sewing machine, wherein the connection receiving portion is provided with detecting means for detecting a state in which the connection engaging portion of the embroidery frame is mounted at a normal position. A locking mechanism that locks the coupling engaging portion with respect to the coupling receiving portion, the locking mechanism moving to a locking position in a state where the coupling engaging portion is mounted in a normal position;
2. The embroidery sewing machine according to claim 1, wherein the detection unit detects that the coupling engagement portion is mounted at a normal position based on the lock mechanism being located at the lock position. Embroidery frame mounting mechanism. The connection engagement portion has a plurality of connection engagement portions spaced apart from each other.
The connection receiving portion includes a plurality of connection receiving portions corresponding to each of the plurality of connection engaging portions, and receiving the connection receiving portions.
3. The embroidery sewing machine according to claim 2, wherein the lock mechanism moves to the lock position in a state in which all of the plurality of connection engaging portions are attached to the plurality of connection receiving portions corresponding thereto. Embroidery frame mounting mechanism.   4. An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 3, wherein two sets of the connection engaging portion and the connection receiving portion corresponding to the connection engagement portion are provided. In an embroidery frame mounting mechanism of an embroidery sewing machine that is mounted on a carriage that moves an embroidery frame that holds a work cloth to be embroidered in a stretch shape,
A connection receiving portion for detachably mounting a connection engagement portion of the embroidery frame formed on the carriage;
A locking mechanism that locks the coupling engagement portion in a state where the coupling engagement portion of the embroidery frame is mounted on the coupling receiving portion;
Detection means for detecting a state in which the locking mechanism locks the coupling engaging portion to the coupling receiving portion;
An embroidery frame mounting mechanism for an embroidery sewing machine, characterized in that   The lock mechanism includes a lock member that locks the coupling engagement portion, an elastic member that elastically biases the lock member to the lock position, and an operation that is integrally formed with the lock member and operates the lock member from the lock position to the lock release position. An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 5, further comprising a lever.   The embroidery frame has a pair of connection engagement portions spaced apart from each other, and the carriage has a pair of connection reception portions corresponding to the pair of connection engagement portions, a pair of lock mechanisms, and a pair of operation levers. An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 6.   The detection means includes a detection interlocking member operatively connected to a pair of lock members, a switch operation unit provided in the detection interlocking member, and a detection switch operated by the switch operation unit. An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 7.   The operation lever is configured to be held in a predetermined posture when the lock mechanism is in a locked state, and to be in a posture different from the predetermined posture when the lock mechanism is not in a locked state. An embroidery frame mounting mechanism for an embroidery sewing machine according to claim 6 or 7.