JP2015134065A - Device for preventing scattering of sewing needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for preventing the scattering of a sewing needle which does not require detachment/attachment work or the like, and on which a sewing object is not caught when the device is not used.SOLUTION: A device 20 for preventing the scattering of a sewing needle includes: a transparent plate-shaped cover member 30 (a main cover part 31 and a sub-cover part 32) including an upper end surface and a lower end surface; a guide member 40 which is connected to the cover member 30 and guides the movement of the cover member 30 so that the cover member 30 is selectively movable between a storage position of being stored in a head part 5 of a sewing machine 1 with a needle bar 6 arranged therein and a shielding position provided below the storage position with respect to a vertical direction; and a light-emitting unit 50 including a plurality of LEDs 51 placed on the upper end surface of the cover member 30 so that light travels from the upper end surface to the lower end surface of the cover member 30.

Description

  The present invention relates to a scattering prevention device for sewing needles of a sewing machine.

  When the sewing needle of the sewing machine breaks, broken pieces of the sewing needle scatter. In order to prevent the sewing needles from scattering, a sewing needle scattering prevention device is attached to the sewing machine. Patent document 1 discloses the scattering prevention device of the sewing needle inserted and inserted into the presser bar. Patent Document 2 discloses a sewing needle scattering prevention device having a holder rotatably attached to an arm portion of a sewing machine and a cover member rotatably connected to the holder.

JP-A-11-267388 JP-A-8-173675

(Problems to be solved by the invention)
Since the sewing needle scattering prevention device described in Patent Document 1 is fitted into the presser bar, when the scattering prevention device is removed from the presser bar, the presser member provided at the tip of the presser bar must be removed. . For this reason, the removal | desorption operation | work of a scattering prevention apparatus is troublesome. Furthermore, since it is necessary to store the removed scattering prevention device separately, it is necessary to secure a storage place and there is a possibility that the scattering prevention device may be lost.

  Further, since the sewing needle scattering prevention device described in Patent Document 2 is fixed to the arm portion of the sewing machine by a bolt, it cannot be easily removed. Therefore, even when the anti-scattering device is not used, the sewing work is often performed with the anti-scattering device attached to the sewing machine. For this reason, there is a possibility that the sewn product may be caught by the scattering prevention device during the sewing work and hinder the sewing work.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sewing needle scattering prevention device that does not require a detaching operation or the like and that does not cause the sewn product to be caught by the scattering prevention device when not in use.

(Means for solving the problem)
The present invention includes a transparent cover member having an upper end surface and a lower end surface, a storage position where the cover member is stored in the head of the sewing machine in which the needle bar is disposed, and a vertical position. A guide member that guides the movement of the cover member so as to be selectively movable between a shielding position provided below the storage position with respect to the direction, There is provided a sewing needle scattering prevention device, comprising: a light emitting device placed on an upper end surface of a cover member so as to advance from the end surface toward the lower end surface.

  According to the present invention, the cover member is disposed at the front position of the sewing needle by moving the cover member to the shielding position when the scattering prevention device is used. For this reason, when the sewing needle is broken, it is possible to prevent the broken pieces of the sewing needle from scattering to the front side of the sewing machine. Further, when the anti-scattering device is not used, the cover member only needs to be stored in the head of the sewing machine, so that the work of detaching the anti-scattering device from the sewing machine can be abolished and the sewn product is caught by the cover member. The occurrence of problems such as these can be prevented.

  In addition, according to the present invention, light emitted from the light emitting device enters the cover member from the upper end surface of the cover member, travels in the cover member from the upper end surface of the cover member toward the lower end surface, and The light is emitted from the lower end surface. For this reason, when the scattering prevention device is used, the light emitted from the lower end surface of the cover member close to the needle base of the sewing needle is irradiated near the needle base of the sewing needle. Therefore, the visibility near the needle base is improved. Furthermore, when the light emitted from the light emitting device passes through the inside of the cover member, the cover member itself emits light from the inside. Since the cover member emits light in this way, the visibility when the sewing person views the sewing needle and the vicinity of the needle base through the cover member is further improved.

  In the above invention, when the cover member is in the shielding position, the sewer can visually recognize the sewing needle through the transparent cover member. Further, the cover member prevents the broken pieces of the sewing needle from being scattered toward the sewer when the sewing needle is broken.

  In the above invention, the “storage position” of the cover member is basically a position where all of the cover member is stored in the head of the sewing machine. On the other hand, the “shielding position” of the cover member may be a position where all of the cover member is disposed below the head of the sewing machine, or a part of the cover member is disposed below the head of the sewing machine. It may be a position.

  The cover member may include a sub-cover portion that is disposed on the side of the sewing needle that is attached to the lower portion of the needle bar when in the shield position. According to this, the sub-cover portion prevents the broken pieces of the sewing needle from being scattered to the side of the sewing machine when the sewing needle is broken. Here, “the side of the sewing needle” means the side direction of the sewing machine.

  Further, it is preferable that an unevenness is formed on the lower end surface of the cover member. According to this, since diffused light is emitted from the lower end surface of the cover member, the sewing needle and the vicinity of the needle base are illuminated in a wide range. For this reason, the visibility of the sewing needle and the vicinity of the needle base is further improved. Note that the size of the unevenness can be arbitrarily set as long as the diffused light can be sufficiently emitted.

  The cover member is preferably made of resin. The cover member may be formed of glass or the like, but since the glass is heavy, the use of glass hinders weight reduction of the sewing machine. In addition, since the end face of the glass is greenish due to the influence of impurities, when the cover member is formed of glass, light emitted from the lower end face is weakened. On the other hand, the transparent resin is lightweight, and light emitted from the end face is not weakened by the influence of impurities. Furthermore, it is possible to easily form irregularities on the lower end surface of the cover member by subjecting the end surface to embossing or the like. Therefore, the cover member is preferably formed of a transparent resin such as an acrylic resin or a polycarbonate resin.

  The guide member may be configured such that the cover member can be stopped at an arbitrary position between the storage position and the shielding position. According to this, the shielding position can be adjusted according to the thickness of the sewing product.

  The guide member is provided in the head of the sewing machine and has a rail member that extends along the vertical direction, and a fitting portion that is connected to the upper end surface of the cover member and fits to the rail member. And a fixing member movable along the extending direction of the rail member. The light emitting device is preferably held by the fixing member. According to this, the movement of the cover member is guided by the cover member moving on the rail member via the fixing member. Further, the light emitting device is reliably placed on the upper end surface of the cover member by the fixing member.

  In addition, a convex lens may be provided on the cover member. According to this, since the sewing person can enlarge and visually recognize the sewing needle and the needle base by the convex lens, the visibility of the sewing needle and the vicinity of the needle base through the cover member is further improved.

  In addition, the sewing needle scattering prevention device according to the present invention preferably includes an operation member that is connected to the fixed portion within the head of the sewing machine and protrudes from the head of the sewing machine. According to this, the sewing member can move the operation member to move the position of the cover member from the storage position to the shielding position, or from the shielding position to the storage position.

It is a perspective view of a sewing machine to which a sewing needle scattering prevention device according to the present embodiment is attached. It is a figure which shows structures other than the structure (1st rail member, 2nd rail member) provided in the head of a sewing machine among the scattering prevention apparatuses shown by FIG. It is a figure which shows a cover member. It is the figure which looked at the structure shown in FIG. 2 from the downward direction. It is the front view and side view of a sewing machine when a cover member exists in a storing position. It is the perspective view which looked at the sewing machine when a cover member exists in a storing position from the front and diagonally downward. It is the front view and side view of a sewing machine when a cover member exists in a shielding position. It is a perspective view which shows the other example of a cover member.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a sewing machine 1 to which a sewing needle scattering prevention device according to this embodiment is attached. In FIG. 1, the needle bar cover that covers the front surface of the head 5 of the sewing machine 1 is removed. Here, when the sewing machine 1 is correctly placed on a certain plane (for example, a horizontal plane), a direction parallel to the plane and from the back surface to the front surface of the sewing machine 1 is defined as a front direction, and is opposite to the front direction. Is defined as the rear direction, and the axial direction represented by the front direction and the rear direction is defined as the depth direction. Further, the direction parallel to the plane and extending from the right side to the left side of the sewing machine 1 when viewed from the sewing machine 1 is defined as the left direction, the opposite direction of the left direction is defined as the right direction, and is represented by the left direction and the right direction. The axial direction is defined as the lateral direction. Furthermore, the direction perpendicular to the plane and extending from the bottom surface to the top surface of the sewing machine 1 is defined as the upward direction, the opposite direction of the upward direction is defined as the downward direction, and the axial direction represented by the upward direction and the downward direction is defined as the vertical direction. Defined as direction. That is, each direction is defined by the direction seen from the sewing machine 1.

  As shown in FIG. 1, the sewing machine 1 includes a bed portion 2 that extends in the lateral direction and is placed on a work table and the like, and a main body portion that extends upward from a portion closer to the left side of the bed portion 2. 3, an arm portion 4 extending rightward from the upper end portion of the main body portion 3, and a head portion 5 connected to the right end portion of the arm portion 4. The sewing machine 1 has a U-shape when viewed from the front side so that the arm part 4 and the head part 5 face the bed part 2 in the vertical direction, and the right side surface is open.

  A needle bar 6 is disposed in the head 5. The needle bar 6 is extended along the vertical direction. A lower portion of the needle bar 6 protrudes downward from the head 5, and a sewing needle 7 is attached to the protruding portion. The sewing needle 7 is located below the head 5 and extends along the vertical direction. The needle bar 6 and the sewing needle 7 move up and down by a driving force of a driving means (not shown).

  In the present embodiment, the needle bar 6 and the sewing needle 7 are moved up and down by an electric drive component such as an electric motor. The electric motor is disposed in the bed portion 2, for example. A main shaft is disposed in the arm portion 4 so as to be rotatable about the axis along the lateral direction. The electric motor and the main shaft are connected by a power transmission mechanism arranged in the main body 3. The rotation of the main shaft is transmitted to the needle bar 6 through a conversion mechanism that converts the rotation operation into a vertical reciprocation operation. Therefore, when the electric motor is driven, the main shaft rotates through the power transmission mechanism, and the needle bar 6 and the sewing needle 7 reciprocate (up and down) through the conversion mechanism.

  A needle plate 8 is provided on a portion of the upper surface of the bed portion 2 that faces the head portion 5. A needle hole 8 a is formed in the needle plate 8. When the sewing needle 7 moves up and down, the tip portion of the sewing needle 7 enters the bed portion 2 via the needle hole 8a. A pot (not shown) is disposed in the bed portion 2. A bobbin (not shown) is rotatably disposed in the hook, and a bobbin thread is wound around the bobbin. Then, the bobbin rotates in synchronization with the vertical movement of the sewing needle 7. At this time, the upper thread passed through the tip of the sewing needle 7 and the lower thread in the bobbin are joined by the cooperative operation of the vertical movement of the sewing needle 7 and the rotational movement of the bobbin, whereby the sewing product on the needle plate 8 ( For example, a cloth) is sewn. Since the sewing operation by such a sewing machine is publicly known, further explanation is omitted.

  A presser bar 9 is disposed in the head 5. The presser bar 9 extends in the vertical direction, and its lower part projects downward from the head 5. And the pressing member 10 is attached to the front-end | tip (lower end). Further, the presser bar 9 moves up and down between an upper position and a lower position by manual operation of a presser lifting operation lever (not shown). When the presser bar 9 is moved to the lower position, the sewing product is held between the presser member 10 and the needle plate 8. When the presser bar 9 is moved to the upper position, the clamping of the sewing product is canceled. At the time of sewing, the presser bar 9 is positioned at the lower position. After the sewing is completed, the presser bar 9 is positioned at the upper position in order to take out the sewing product.

  A sewing needle scattering prevention device 20 is attached to the sewing machine 1. The scattering prevention device 20 includes a cover member 30, a guide member 40, and a light emitting device 50. The guide member 40 includes a first rail member 41, a second rail member 42, a first fixing member 43, and a second fixing member 44. The first rail member 41 and the second rail member 42 are provided in the head 5 of the sewing machine 1. The first fixing member 43 is fitted to the first rail member 41 so as to be vertically movable, and the second fixing member 44 is fitted to the second rail member 42 so as to be vertically movable.

  The 1st rail member 41 and the 2nd rail member 42 are fixed to components (for example, presser bar 9 grade | etc.,) Provided in the head 5 with fastening members, such as a volt | bolt. The first rail member 41 is a long member extending in the vertical direction, and is disposed in the head 5 so that one surface faces the front direction. A slit 41 a is formed on the one surface of the first rail member 41 along the longitudinal direction. The second rail member 42 is also a long member extending in the vertical direction. On the second rail member 42, a protrusion 42a protruding in the right direction is formed over the longitudinal direction. The protrusion 42a is formed so that the width on the distal end side is larger than the width on the proximal end side.

  FIG. 2 is a diagram showing a configuration other than the configurations (first rail member 41, second rail member 42) provided in the head 5 of the sewing machine 1 in the scattering prevention device 20 shown in FIG. The direction shown in FIG. 2 is the same as the direction defined in FIG. In the following, the configuration of the scattering prevention device 20 other than the first rail member 41 and the second rail member 42 may be referred to as a “moving member”.

  As shown in FIG. 2, the cover member 30 is a plate-like member having a rectangular plane, and has a shape that is bent substantially at a right angle from a substantially central portion of a pair of opposed long sides. Therefore, two orthogonal plane portions are formed on the cover member 30. Of these two flat portions, one flat portion constitutes the main cover portion 31 and the other flat portion constitutes the sub cover portion 32. Then, one side of the main cover portion 31 and one side of the sub cover portion 32 are connected by the connection portion 33. Since the cover member 30 has such a shape, the cross-sectional shape when the cover member 30 is cut by a plane perpendicular to the vertical direction is substantially L-shaped. The cover member 30 is transparent. In the present embodiment, the cover member 30 is formed of a transparent acrylic resin. The cover member 30 may be made of transparent glass or transparent polycarbonate resin.

  FIG. 3 shows only the cover member 30 shown in FIG. As shown in FIG. 3, the main cover portion 31 has an upper end surface 31a, a lower end surface 31b, a front surface 31c, and a rear surface 31d, and the sub cover portion 32 has an upper end surface 32a, a lower end surface 32b, a right side surface 32c, and It has a left side 32d. When the cover member 30 is assembled to the sewing machine 1, the upper end surfaces 31a and 32a face upward, the lower end surfaces 31b and 32b face downward, the front surface 31c faces forward, and the rear surface 31d faces rearward. The right side 32c faces right and the left side 32d faces left.

  As shown in FIG. 1, the main cover portion 31 is disposed so as to face the depth direction. Therefore, the main cover part 31 is arrange | positioned on the plane parallel to a perpendicular direction and a side direction. The sub cover portion 32 is connected to the right side of the main cover portion 31 so as to extend rearward from the right end of the main cover portion 31 via the connection portion 33. The sub cover part 32 is arrange | positioned so that it may face a side direction. Therefore, the sub cover part 32 is arrange | positioned on the plane parallel to a perpendicular direction and a depth direction.

  As shown in FIG. 3, the vertical length H of the main cover part 31 and the sub cover part 32 is equal. The vertical length H of the main cover portion 31 and the sub cover portion 32 is shorter than the vertical length of the head 5 of the sewing machine 1. The lateral length of the main cover portion 31 is shorter than the lateral length of the head 5 of the sewing machine 1. The length in the depth direction of the sub cover portion 32 is shorter than the length in the depth direction of the head 5 of the sewing machine 1. That is, the cover member 30 is formed in a size that can be stored in the head 5.

  As shown in FIG. 2, the first fixing member 43 includes a first grip portion 431 and a first fitting portion 432. The first grip portion 431 is connected (fixed) to the upper end portion of the main cover portion 31 so as to grip the upper end surface 31a of the main cover portion 31 from above in the lateral direction. Therefore, almost the entire upper end surface 31 a of the main cover portion 31 is covered with the first grip portion 431. The first fitting portion 432 is connected to the first grip portion 431. The second fixing member 44 includes a second grip 441 and a second fitting part 442. The second grip portion 441 is connected (fixed) to the upper end portion of the sub cover portion 32 so as to grip the upper end surface 32a of the sub cover portion 32 from above over the depth direction. Therefore, almost the entire upper end surface 32 a of the sub cover portion 32 is covered with the second grip portion 441. The second fitting portion 442 is connected to the second grip portion 441.

  4 is a view of the configuration shown in FIG. 2 as viewed from below. In FIG. 4, the cover member 30 is omitted. As shown in FIG. 4, the first grip portion 431 includes an inner portion 431 a that faces the rear surface 31 d of the main cover portion 31, an outer portion 431 b that faces the front surface 31 c of the main cover portion 31, and the main cover portion 31. The upper end portion 431c facing the upper end surface 31a of the main cover portion 31 is gripped by these portions. The first fitting portion 432 is connected to the inner portion 431a of the first grip portion 431. The first fitting portion 432 extends in the vertical direction as shown in FIG. Further, the first fitting portion 432 is formed with a protrusion 432a as shown in FIG. The protrusion 432 a has a shape that can be fitted into the slit 41 a of the first rail member 41.

  The second grip 441 faces the inner side 441 a facing the left side 32 d of the sub cover part 32, the outer side 441 b facing the right side 32 c of the sub cover part 32, and the upper end face 32 a of the sub cover part 32. And the upper end portion of the sub cover portion 32 is gripped by these portions. The second fitting portion 442 is connected to the inner side surface 441 a of the second grip portion 441. The second fitting portion 442 extends in the vertical direction as shown in FIG. Further, the second fitting portion 442 has a recess 442a as shown in FIG. The recess 442a is formed in a shape that allows the protrusion 42a of the second rail member 42 to be fitted therein.

  The first fixing member 43 is assembled to the head 5 of the sewing machine 1 by fitting the protrusion 432 a of the first fitting portion 432 into the slit 41 a of the first rail member 41. Further, the protrusion 42 a of the second rail member 42 is fitted into the recess of the second fitting portion 442, whereby the second fixing member 44 is assembled to the head 5 of the sewing machine 1. Thus, by attaching the first fixing member 43 and the second fixing member 44 to the head 5 of the sewing machine 1, the cover member 30 connected (fixed) thereto is also assembled to the head 5 of the sewing machine 1.

  In addition, as described above, the slit 41a of the first rail member 41 and the protrusion 42a of the second rail member 42 are formed along the vertical direction. Accordingly, the moving member including the cover member 30 is assembled to the head portion 5 of the sewing machine 1 so as to be movable in the vertical direction, and the fitting between the first rail member 41 and the first fitting portion 432 and the second rail member. The vertical movement (movement along the vertical direction) is guided (guided) by the fitting of 42 and the second fitting portion 442. That is, the guide member 40 guides the movement of the cover member 30 in the vertical direction.

  As well shown in FIG. 2, a connection bracket 443 is formed in the second fitting portion 442. An operation knob 45 is connected to the tip of the connection bracket 443 as shown in FIG. The operation knob 45 protrudes rightward from the housing 5 a that covers the head 5 of the sewing machine 1. The housing 5a is formed with a slit for allowing the operation knob 45 to move in the vertical direction.

  The light emitting device 50 is a device that emits light, and is configured by a plurality of LEDs in the present embodiment. The plurality of LEDs are held by the first fixing member 43 and the second fixing member 44. As shown in FIG. 4, there are a plurality of upper portions 431 c of the first holding portion 431 of the first fixing member 43 and upper portions 441 c of the second holding portion 441 of the second fixing member 44 respectively along the longitudinal direction. The circular holes H are formed, and a plurality of LEDs 51 are inserted and held in these circular holes H, respectively. Accordingly, the plurality of LEDs 51 are arranged along the lateral direction on the upper end surface 31a of the main cover portion 31 covered by the upper portion 431c of the first grip portion 431 and covered by the upper portion 441c of the second grip portion 441. A plurality of LEDs 51 are aligned and arranged along the depth direction on the upper end surface 32 a of the sub cover portion 32. Each LED 51 is connected to an energization line. The energization line is connected to, for example, a power supply line for supplying power to the sewing machine 1. In addition, each LED51 has the light emitted from them inside the main cover part 31 and the inside of the sub cover part 32 from the upper end surfaces 31a, 32a of the main cover part 31 and the sub cover part 32 toward the lower end faces 31b, 32b. Are placed on the upper end surfaces 31a, 32a of the main cover portion 31 and the sub cover portion 32.

  In the sewing machine 1 having such a configuration, the second fixing member 44 connected to the operation knob 45 via the connection bracket 443 is moved when the operator moves the operation knob 45 protruding rightward from the head 5 up and down. Move up and down. As the second fixing member 44 moves up and down, the cover member 30 including the sub cover portion 32 held by the second fixing member 44 moves up and down. At this time, the movement of the cover member 30 in the vertical direction is guided by the guide member 40. Further, as the cover member 30 moves in the vertical direction, the plurality of LEDs 51 placed on the upper end surfaces 31 a and 32 a of the cover member 30 move up and down together with the cover member 30. As shown in FIG. 1, an upper end stopper member 42 b is formed on the second rail member 42. Accordingly, the upward movement of the cover member 30 is restricted by the second fixing member 44 (second fitting portion 442) coming into contact with the upper end stopper member 42b. Similarly, when the second fixing member 44 (second fitting portion 442) comes into contact with a lower end stopper member (not shown) provided on the second rail member 42, the downward movement of the cover member 30 is restricted.

  Although not specifically shown in FIG. 1, in this embodiment, the cover member 30 is within a range between an upper limit position regulated by the upper end stopper member and a lower limit position regulated by the lower end stopper member. It is comprised so that it can stop at arbitrary vertical positions. For example, a latch-type slide mechanism is provided between the second fitting portion 442 and the second rail member 42 of the second fixing member 44 or between the first fitting portion 432 of the first fixing member 43 and the first rail member 41. By interposing them, the cover member 30 can be stopped at an arbitrary vertical position. In addition, along with the vertical movement of the cover member 30 and the plurality of LEDs 51, the energization lines connected to the plurality of LEDs 51 also move. In this case, the length of the energization line is given a margin so that the cover member 30 can move between the upper limit position and the lower limit position.

  5A and 5B are diagrams showing the sewing machine 1 when the cover member 30 is at the upper limit position. FIG. 5A is a right side view and FIG. 5B is a front view. When the cover member 30 is in the upper limit position, the cover member 30 is completely stored in the head 5 as shown in FIG. Such a vertical position of the cover member 30 is referred to as a “storage position”.

  FIG. 6 is a perspective view of the sewing machine 1 when the cover member 30 is in the retracted position as viewed from the front and slightly from below. As shown in FIG. 6, the cover member 30 is stored in the head 5 so as to be along the front wall and the inner wall of the right side surface of the housing 5 a that forms the outline of the head 5 of the sewing machine 1 in the storage position. Since the cover member 30 is stored in the head 5 in such a manner, the space in the head 5 is not extremely reduced by the cover member 30.

  By the way, when sewing a sewing product with a sewing machine, when the thickness of the sewing product is small (the sewing product is thin), or when the sewing product is soft, the force acting on the sewing needle from the sewing product during sewing is relatively small. Therefore, the possibility that the sewing needle breaks is small. In such a case, it is not necessary to use a sewing needle scattering prevention device. In the present embodiment, when the scattering prevention device 20 is not used, the sewer moves the operation knob 45 upward to position the cover member 30 at the retracted position. For this reason, the sewer can directly view the sewing needle and the needle base at the time of sewing. Moreover, since the cover member 30 is stored in the head portion 5, it is possible to prevent the occurrence of a problem that the cover member 30 is caught by the sewing product. Furthermore, since it is not necessary to remove the anti-scattering device 20 from the sewing machine 1 when not in use, the work of detaching the anti-scattering device 20 can be abolished and the loss of the anti-scattering device 20 resulting from the removal of the anti-scattering device 20 can be prevented. Can do.

  On the other hand, when the thickness of the sewn product is large (the sewn product is thick) or when the sewn product is hard, the force acting on the sewing needle from the sewn product during sewing is relatively large. Therefore, the possibility that the sewing needle breaks is high. In such a case, the sewing needle scattering prevention device 20 is used. When using the scattering prevention device 20, the sewer moves the operation knob 45 of the sewing machine 1 in the state shown in FIGS. 4 and 5 downward. Thereby, the cover member 30 moves downward from the storage position. When the cover member 30 moves downward from the storage position, the cover member 30 protrudes downward from the head 5 and at least a part of the cover member 30 is disposed below the head 5. The position of the cover member 30 when the cover member 30 moves downward from the storage position and is disposed below the head 5 is referred to as a “shielding position”. Thus, in this embodiment, the cover member 30 is guided by the guide member 40 so that the cover member 30 can be selectively moved between the “storage position” and the “shielding position”. The “shielding position” may be the “lower limit position”, but may be a position above the lower limit position.

  7A and 7B are diagrams illustrating the sewing machine 1 when the cover member 30 is in the shielding position, in which FIG. 7A is a right side view and FIG. 7B is a front view. FIG. 1 also shows the sewing machine 1 when the cover member 30 is in the shielding position. As shown in FIGS. 1 and 7, the main cover portion 31 is disposed forward of the sewing needle 7 and the sub cover portion 32 is disposed rightward of the sewing needle 7 in the cover member 30 in the shielding position. To do. That is, the “shielding position” is a position where at least a part of the cover member 30 (main cover portion 31) is located below the head 5 of the sewing machine 1 and ahead of the sewing needle 7. Further, when the cover member 30 is in the shielding position, the sub cover portion 32 is disposed on the side (right side) of the sewing needle 7.

  When the cover member 30 is disposed at the shielding position, the main cover portion 31 is interposed between the sewing needle 7 and the sewer. For this reason, the sewer can visually recognize the sewing needle 7 through the transparent main cover portion 31. Further, when the sewing needle 7 is broken during sewing and the fragments are scattered forward, the scattered fragments collide with the main cover portion 31. For this reason, it can prevent that a fragment scatters ahead toward a sewing person. Further, when the sewing needle 7 is broken and the fragments are scattered to the right of the sewing machine 1, the scattered fragments collide with the sub cover portion 32. For this reason, it is possible to prevent the fragments from scattering to the right of the sewing machine 1.

  In the present embodiment, even when the cover member 30 is in the lower limit position, the sewing product enters between the lower end of the cover member 30 and the upper surface of the bed portion 2 (or the needle plate 8) of the sewing machine 1. A gap is formed. Therefore, even when the cover member 30 is at the lower limit position, the sewing work is not hindered by the sewn product sandwiched between the cover member 30 and the bed portion 2. Furthermore, the main cover part 31 is arrange | positioned perpendicularly | vertically to the depth direction which is the advancing direction of the sewing product during a sewing operation | work. That is, the main cover portion 31 is disposed perpendicular to the traveling direction of the sewing product. For this reason, even when the sewn product contacts the main cover portion 31 during the sewing operation, the main cover portion 31 comes into contact with the sewn product, so that the sewn product is less likely to be caught by the main cover portion 31. Therefore, even when the scattering prevention device 20 is used, it is possible to reduce the occurrence of problems such as the sewn product being caught on the scattering prevention device 20.

  Further, when the plurality of LEDs 51 placed on the upper end surface 31 a of the main cover portion 31 and the upper end surface 32 a of the sub cover portion 32 are energized, the plurality of LEDs 51 emit light. Light emitted from the LED 51 placed on the upper end portion of the main cover portion 31 enters the main cover portion 31 from the upper end surface 31a of the main cover portion 31, and passes through the main cover portion 31 from the upper end surface 31a to the lower end surface. It advances toward 31b and is emitted from the lower end surface 31b of the main cover portion 31. Further, light emitted from the LED 51 placed on the upper end portion of the sub cover portion 32 enters the sub cover portion 32 from the upper end surface 32a of the sub cover portion 32, and enters the sub cover portion 32 from the upper end surface 32a. The light travels toward the lower end surface 32 b and is emitted from the lower end surface 32 b of the sub cover portion 32.

  Here, as can be seen from FIGS. 1 and 7, when the cover member 30 is in the shielding position, the lower end surface 31 b of the main cover portion 31 and the lower end surface 32 b of the sub cover portion 32 are located near the sewing needle 7 and its needle base. Proximity. By irradiating light to the sewing needle 7 and the vicinity of the needle base from such a proximity position, the visibility of the sewing needle 7 and the vicinity of the needle base is improved. Further, since there is no interference between the lower end surfaces 31b and 32b and the sewing needle 7 and its vicinity, the irradiated light illuminates the sewing needle 7 and its vicinity without being blocked by the interference. Therefore, it is possible to prevent the visibility of the sewing needle 7 and the vicinity of the needle base from being deteriorated due to the occurrence of the shadow of the interference object.

  Incidentally, as shown in FIG. 6, since the lower portion of the head 5 of the sewing machine 1 is open, even when the cover member 30 is in the “retracted position”, the light emitted from the LED 51 is emitted from the main cover portion. The light is emitted from the lower end surface 31 b of 31 and the lower end surface 32 b of the sub cover portion 32. Therefore, even when the scattering prevention device 20 is not used, the sewing needle 7 and the vicinity of the needle base are illuminated by light emitted from the lower end surface 31b of the main cover portion 31 and the lower end surface 32b of the sub cover portion 32. Can do.

  In the present embodiment, the light of the LED that emits light from the upper end surface 31 a of the main cover portion 31 passes through the main cover portion 31. For this reason, the main cover part 31 emits light from the inside, and the light of the LED is not reflected from the outside of the main cover part 31 to deteriorate visibility. Accordingly, the visibility of the sewing needle 7 and the vicinity of the needle base through the main cover portion 31 is improved. Furthermore, since the sewing needle 7 and its vicinity are also illuminated by the internal light emission, the visibility of the sewing needle 7 and its vicinity through the main cover portion 31 is further enhanced. In addition, in the present embodiment, since the LED light emitted from the upper end surface 32a of the sub cover portion 32 also passes through the sub cover portion 32, the sub cover portion 32 also emits light internally. Since the internal light emission of the sub cover portion 32 illuminates the sewing needle 7 and the vicinity of the needle base, the visibility of the sewing needle 7 and the vicinity of the needle base is further enhanced.

  In the present embodiment, the guide member 40 is configured such that the cover member 30 can stop at an arbitrary position between the storage position and the shielding position. For this reason, the optimal shielding position can be adjusted according to the thickness of the sewing product.

  In the present embodiment, fine irregularities are formed on the lower end surface 31 b of the main cover portion 31 and the lower end surface 32 b of the sub cover portion 32. Therefore, the light emitted from the lower end surfaces 31b and 32b of the main cover portion 31 and the sub cover portion 32 is diffused by fine unevenness. That is, diffused light is emitted from the lower end surfaces 31 b and 32 b of the main cover portion 31 and the sub cover portion 32. For this reason, the vicinity of the needle base of the sewing needle 7 is illuminated over a wide area. As a result, the visibility of the sewing needle 7 and the vicinity of the needle base is further enhanced.

  As described above, the sewing needle scattering prevention device 20 according to the present embodiment includes the transparent plate-like cover member 30 (the main cover portion 31 and the sub cover portion) having the upper end surfaces 31a and 32a and the lower end surfaces 31b and 32b. 32), a storage position that is connected to the cover member 30 and the cover member 30 is stored in the head 5 of the sewing machine 1 where the needle bar 6 is disposed, and a storage position with respect to the vertical direction. A guide that guides the movement of the cover member 30 so that the cover member 30 can move to a shielding position that is lower than the head 5, that is, lower than the head 5 and forward of the sewing needle 7 attached to the lower portion of the needle bar 6. The upper end surface of the cover member 30 such that the member 40 emits light and the emitted light travels inside the cover member 30 from the upper end surfaces 31a, 32a of the cover member 30 toward the lower end surfaces 31b, 32b. Comprising 1a, the light emitting device 50 comprising a plurality of LED51 placed in 32a, the.

  According to the present embodiment, the cover member 30 (main cover portion 31) is arranged at the front position of the sewing needle 7 by moving the cover member 30 to the shielding position when the scattering prevention device 20 is used. For this reason, when the sewing needle 7 is broken, it is possible to prevent the broken pieces of the sewing needle from scattering to the front side of the sewing machine 1. Further, since the cover member 30 only needs to be stored in the head 5 of the sewing machine 1 when the anti-scattering device 20 is not used, the work of detaching the anti-scattering device 20 from the sewing machine 1 can be abolished, and Generation | occurrence | production of malfunctions, such as a sewing material being caught by the cover member 30 at the time of non-use, can be prevented.

  In addition, light emitted from the light emitting device 50 (the plurality of LEDs 51) travels in the cover member 30 from the upper end surfaces 31a and 32a of the cover member 30 toward the lower end surfaces 31b and 32b. For this reason, when the scattering prevention device 20 is used, light is irradiated from the lower end surfaces 31b and 32b of the cover member 30 close to the needle base of the sewing needle 7 to the vicinity of the needle base of the sewing needle. Therefore, the visibility near the needle base is improved. Furthermore, when the light emitted from the plurality of LEDs 51 travels inside the cover member 30, the cover member 30 itself emits light from the inside. Thus, since the cover member 30 emits light internally, the visibility when the sewing person views the sewing needle 7 and the vicinity of the needle base through the cover member 30 is further enhanced.

  Further, since the cover member 30 includes the sub cover portion 32 that is disposed on the side (right side) of the sewing needle 7 when it is in the shielding position, the broken pieces of the sewing needle 7 that are broken when the sewing needle 7 is broken. It is possible to prevent scattering to the side (right side). Further, since the cover member 30 is formed of a transparent acrylic resin, the cover member 30 can be formed at low cost and a sufficient amount of light can be emitted from the lower end surfaces 31b and 32b.

  As mentioned above, although embodiment of this invention was described, this invention should not be limited and limited to the said embodiment. For example, as shown in FIG. 8, a convex lens 35 may be provided on the main cover portion 31 of the cover member 30. By comprising in this way, the sewing needle visually recognized through the main cover part 31 and the needle vicinity vicinity are expanded. Therefore, visibility can be further improved. Moreover, in the said embodiment, although the cover member 30 provided with the main cover part 31 and the sub cover part 32 was shown, the cover member 30 may be comprised only by the main cover part 31. FIG. Further, the vertical movement of the cover unit 30 is manually performed in the present embodiment, but the cover member 30 may be automatically moved up and down by using, for example, an electric motor. Thus, the present invention can be modified without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 1 ... Sewing machine, 2 ... Bed part, 3 ... Main part, 4 ... Arm part, 5 ... Head, 6 ... Needle bar, 7 ... Sewing needle, 8 ... Needle plate, 9 ... Presser bar, 10 ... Presser member, 20 ... scattering device, 30 ... cover member, 31 ... main cover part, 31a ... upper end face, 31b ... lower end face, 31c ... front face, 31d ... rear face, 32 ... sub cover part, 32a ... upper end face, 32b ... lower End surface, 32c ... right side, 32d ... left side, 35 ... convex lens, 40 ... guide member, 41 ... first rail member, 42 ... second rail member, 43 ... first fixing member, 431 ... gripping part, 431c ... top surface 432 ... fitting part, 44 ... second fixing member, 441 ... gripping part, 441c ... upper surface, 442 ... fitting part, 45 ... operation knob (operation member), 50 ... light emitting device, 51 ... LED, H ... circle Hole

Claims (7)

A transparent cover member having an upper end surface and a lower end surface;
The cover member is connected to the cover member, and the cover member includes a storage position stored in a head of a sewing machine on which the needle bar is disposed, and a shielding position provided below the storage position in the vertical direction. A guide member for guiding the movement of the cover member so as to be selectively movable between,
A light emitting device mounted on the upper end surface of the cover member so that the emitted light travels through the inside of the cover member from the upper end surface of the cover member toward the lower end surface;
A device for preventing scattering of sewing needles. In the sewing needle scattering prevention device according to claim 1,
The said cover member is a scattering prevention apparatus of a sewing needle provided with the sub cover part arrange | positioned in the side of the sewing needle attached to the lower part of the said needle bar when it exists in the said shielding position. In the sewing needle scattering prevention device according to claim 1 or 2,
An apparatus for preventing scattering of sewing needles, wherein an unevenness is formed on a lower end surface of the cover member. In the sewing needle scattering prevention device according to any one of claims 1 to 3,
A sewing needle scattering prevention device, wherein the cover member is made of resin. In the sewing needle scattering prevention device according to any one of claims 1 to 4,
The guide member is a sewing needle scattering prevention device in which the cover member can be stopped at an arbitrary position between the storage position and the shielding position. In the sewing needle scattering prevention device according to any one of claims 1 to 5,
The guide member includes a rail member provided in the head and extending along the vertical direction, and a fitting portion that is connected to the upper end surface of the cover member and is fitted to the rail member. A fixing member movable along the extending direction of the rail member,
A sewing needle scattering prevention device, wherein the light emitting device is held by the fixing member. The device for preventing scattering of a sewing needle according to any one of claims 1 to 6,
A sewing needle scattering prevention device, wherein the cover member is provided with a convex lens.

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