CN222100315U - Sewing machine presser foot and sewing machine with same - Google Patents
Sewing machine presser foot and sewing machine with same Download PDFInfo
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- CN222100315U CN222100315U CN202420285506.0U CN202420285506U CN222100315U CN 222100315 U CN222100315 U CN 222100315U CN 202420285506 U CN202420285506 U CN 202420285506U CN 222100315 U CN222100315 U CN 222100315U
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- 238000009958 sewing Methods 0.000 title claims abstract description 138
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 description 3
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Abstract
本实用新型提供一种能够抑制在布料的切换部等布料厚的部分处拉头的滑动变得费力的缝纫机压脚及具备该缝纫机压脚的缝纫机。缝纫机压脚(10)安装于用于将拉链(91)缝制到布料(95)上的缝纫机，具备：柄(11)，所述柄安装于缝纫机的压杆(A)；链牙导向件(20)，所述链牙导向件相对于柄以能够向上下方向且左右方向移动的方式安装，具有在缝纫机的缝制方向上引导拉链链牙列(93)的导向槽(21a、21b)；以及导向件位置变更机构(30)，所述导向件位置变更机构与缝制过程中的链牙导向件相对于柄的高度对应地变更链牙导向件的左右位置。
The utility model provides a sewing machine presser foot capable of preventing the slider from sliding strenuously at a thick portion of fabric such as a fabric switching portion, and a sewing machine equipped with the sewing machine presser foot. The sewing machine presser foot (10) is installed on a sewing machine for sewing a zipper (91) onto fabric (95), and comprises: a handle (11), the handle being installed on a pressure rod (A) of the sewing machine; a chain tooth guide (20), the chain tooth guide being installed relative to the handle in a manner capable of moving in the up-down direction and in the left-right direction, and having guide grooves (21a, 21b) for guiding a zipper chain tooth array (93) in the sewing direction of the sewing machine; and a guide position changing mechanism (30), the guide position changing mechanism changing the left-right position of the chain tooth guide in accordance with the height of the chain tooth guide relative to the handle during sewing.
Description
Technical Field
The present utility model relates to a sewing machine presser foot attached to a sewing machine for sewing a slide fastener to a cloth, and a sewing machine provided with the sewing machine presser foot.
Background
Patent document 1 describes that a sewing machine presser foot for pressing a cloth, which is a sewn article mounted on a sewing machine table, and a concealed slide fastener from above is used as one of the constituent members of the sewing machine. Patent document 1 describes a presser foot for a sewing machine, in which a presser foot attached to a presser foot body is moved in a direction substantially orthogonal to a feed direction of a workpiece, and a fastener of a slide fastener is sewn and guided to a position close to and apart from a needle falling position at a predetermined interval in accordance with a thickness of the workpiece.
Patent document 2 describes that by rotating a fixed shaft that is movably fitted into an attachment hole of a fixed member, the fixed shaft is frictionally engaged, and thereby, a pressing member is coupled to the fixed member so as to be swingable in the up-down direction and movable in the left-right direction, and even if the thickness of cloth fluctuates during sewing, excessive force is prevented from being applied by the swing in the up-down direction of the pressing member.
Prior art literature
Patent literature
Patent document 1 Japanese patent application laid-open No. 2004-33514
Patent document 2 Japanese Kokai publication Sho-56-45577
Disclosure of utility model
Problems to be solved by the utility model
In addition, the cloth sewn with the slide fastener may have a switching portion having a thicker thickness than other portions. In the switching portion, particularly in the concealed slide fastener, since the gap through which the slider passes is limited according to the thickness of the cloth, the contact area between the cloth and the slider becomes large, and the sliding resistance becomes large. Therefore, a larger force is required than other portions in order to slide the slider. That is, the sliding of the slider becomes laborious at the switching portion. In the sewing machine presser foot described in patent document 1 and patent document 2, the left and right positions of the sewing element can be adjusted before sewing, but cannot be adjusted during sewing. Therefore, the above problems cannot be solved.
The present utility model has been made in view of the above-described circumstances, and an object thereof is to provide a sewing machine presser foot capable of suppressing a slider from becoming laborious to slide at a portion where a cloth is thick, such as a switching portion of the cloth, and a sewing machine provided with the sewing machine presser foot.
Means for solving the problems
The above object of the present utility model is achieved by the following structure.
(1) A sewing machine presser foot mounted to a sewing machine for sewing a slide fastener to a cloth, the sewing machine presser foot comprising:
A handle mounted to a presser bar of the sewing machine;
A fastener element guide mounted to the handle so as to be movable in the up-down direction and the right-left direction, the fastener element guide having a guide groove for guiding the fastener element row in the sewing direction of the sewing machine, and
And a guide position changing mechanism that changes a left-right position of the element guide in accordance with a height of the element guide relative to the handle during sewing.
(2) In the sewing machine presser foot according to (1), the guide position changing mechanism includes a cam mechanism that moves the element guide only in the up-down direction with respect to the shank up to a predetermined height range, and moves the element guide to one side in the left-right direction according to the height of the element guide when the element guide moves upward beyond the predetermined height range with respect to the shank.
(3) The sewing machine presser foot according to (2), wherein the cam mechanism includes:
A cam block mounted on either one of the handle and the element guide and having a cam groove, and
And a pin holding block attached to the other side of the handle and the element guide, the pin holding block holding a cam pin that moves in the cam groove.
(4) The presser foot of the sewing machine according to (3), wherein the cam groove in the cam block has a first groove portion extending in the vertical direction and a second groove portion inclined or curved from an upper end portion of the first groove portion toward one side in the horizontal direction.
(5) The sewing machine presser foot according to (3), wherein the cam block is attached to the shank side, and the pin holding block is attached to the element guide side.
(6) The sewing machine presser foot according to (3), wherein the guide position changing mechanism includes:
A fixed shaft, one end of which is fixed to the pin holding block, and which extends in the left-right direction, and which supports the element guide by a shaft and positions and fixes the element guide;
A guide holding part pivotally supported by the fixed shaft so as not to be pivotable about the fixed shaft and relatively movable in a left-right direction with respect to the fixed shaft, and to which a support shaft penetrating the handle and extending in a vertical direction is fixed, and
And a biasing member disposed between the handle and the guide holder and configured to bias the guide holder downward with respect to the handle.
(7) In the sewing machine presser foot according to (6), the guide holding portion is guided in the left-right direction by a first guide shaft that is attached between facing surfaces of the guide holding portion and the pin holding block so as to allow relative movement between the guide holding portion and the pin holding block in the left-right direction and is provided so as not to be swingable about the fixed shaft.
(8) In the sewing machine presser foot according to (7), the guide holding portion is guided by a second guide shaft attached to the shank so as to allow the guide holding portion to move in the up-down direction with respect to the shank.
(9) The sewing machine presser foot according to (3) further includes a timing adjustment unit provided on the shank side for adjusting a height of the cam block or the pin holding block provided on the shank side with respect to the shank, and setting a start timing of movement of the element guide with respect to the shank in one of left and right directions.
(10) A sewing machine comprising the sewing machine presser foot according to any one of (1) to (9).
ADVANTAGEOUS EFFECTS OF INVENTION
According to the sewing machine presser foot and the sewing machine provided with the sewing machine presser foot of the present utility model, the sewing position of the slide fastener with respect to the cloth can be changed in the left-right direction according to the thickness of the cloth in the middle of sewing the slide fastener to the cloth, and the slide of the slider at the thick portion of the cloth such as the switching portion of the cloth can be suppressed from becoming laborious.
Drawings
Fig. 1 is a perspective view showing a presser foot of a sewing machine according to an embodiment of the present utility model.
Fig. 2 is a front view of the main part of the presser foot of the sewing machine.
Fig. 3 is a front view of a main portion of the presser foot of the sewing machine of fig. 2, showing the inside of the guide holding portion and the pin holding block in perspective.
Fig. 4 is a cross-sectional view along line IV-IV of fig. 5 showing the inside of the guide holder and the pin holder block.
Fig. 5 is a left side view of the presser foot of the sewing machine of fig. 2.
Fig. 6 is a left side view of the sewing machine presser foot of fig. 5, showing the inside of the guide holder in perspective.
Fig. 7 is a right side view of the presser foot of the sewing machine of fig. 2.
Fig. 8 is a right side view of the sewing machine presser foot of fig. 7, showing the inside of the pin holding block in perspective.
Fig. 9 is a perspective view of the cam block.
Fig. 10 is a front view of a main part of the presser foot of the sewing machine showing the positional relationship between the cam groove and the cam pin when the fastener element rows other than the switching portion are guided.
Fig. 11 is a front view of a main part of a sewing machine presser foot showing an example of a positional relationship between a cam groove and a cam pin when guiding a fastener element row of a switching portion.
Fig. 12 is a cross-sectional view showing a sewn product formed by sewing a slide fastener and a cloth.
Fig. 13 is a plan view showing a sewn product of a cloth with a zipper sewn thereto, as seen from the cloth side.
Detailed Description
Hereinafter, a sewing machine presser foot according to an embodiment of the present utility model and a sewing machine provided with the sewing machine presser foot will be described in detail with reference to the drawings.
First, referring to fig. 12, an example of an object to be sewn, that is, an example of a sewn object, by a sewing machine provided with the sewing machine presser foot of the present utility model is shown. The sewn article 9 is an article formed by sewing the slide fastener 91 and the cloth 95 with the sewing thread 94. The slide fastener 91 is, for example, a concealed slide fastener.
The slide fastener 91 includes a pair of fastener tapes 92, 92 having a longitudinal direction and a width direction, fastener element rows 93 sewn along the longitudinal direction at one end in the width direction on one main surface of each fastener tape 92, and a slider (not shown) sliding along the pair of fastener element rows 93, 93. The fastener element row 93 is constituted by a screw element. Each fastener tape 92 is folded and overlapped such that one end portion in the width direction of each fastener element row 93 is disposed so as to face the other main surface of the fastener tape 92. The slide fastener 91 has a pair of surfaces (butt surfaces) on which the fastener tapes 92, 92 are folded and brought into contact, and the fastener element row 93 is hidden by the fastener tape 92 when viewed from the upper side in fig. 12. When the concealed slide fastener is pulled open, the slider slides with the surface (butt surface) of one fastener tape 92 and the other fastener tape 92 folded over and brought into contact with each other. The sewing machine presser foot of the present embodiment can be used when sewing the fastener tapes 92 and the cloth 95 along the longitudinal direction of the slide fastener 91 by the sewing thread 94.
As shown in fig. 1 to 9, the sewing machine presser foot 10 of the present embodiment includes a handle 11 attached to a presser bar a of a sewing machine (not shown), a fastener guide 20 attached to the handle 11 so as to be movable in the up-down direction and the left-right direction, and having a guide groove 21a for guiding a fastener element row 93 in the sewing direction of the sewing machine, and a guide position changing mechanism 30 for changing the left-right position of the fastener element guide 20 in accordance with the height of the fastener element guide 20 relative to the handle 11 during sewing, the guide position changing mechanism 30 being provided.
In the description of the directivity later, the feeding direction of the sewn article 9 or the slide fastener 91 is referred to as the front direction, and the direction parallel to the front direction is referred to as the longitudinal direction or the front-rear direction. The vertical direction means the direction in which a needle (not shown) of the sewing machine reciprocates, and the upper side means the upper side in fig. 2 and the lower side means the lower side in fig. 2. The direction orthogonal to the front-rear direction and the up-down direction is also referred to as the width direction or the left-right direction, and the left side refers to the left side in fig. 2 and the right side refers to the right side in fig. 2. In fig. 12, the width direction of the slide fastener 91 is the right-left direction in fig. 12. In fig. 1, a region B indicated by a single-dot chain line is provided with a needle of a sewing machine that reciprocates up and down.
As also shown in fig. 5, the handle 11 has an insertion hole 12 at the front-rear direction center portion of the upper surface, and the insertion hole 12 is inserted by a presser bar a of the sewing machine extending in the up-down direction. The insertion hole 12 is formed to extend downward to the bottom surface 12a at the right side portion (portion other than the left end portion) of the shank 11 and open upward, rightward, and rearward, and is formed to be U-shaped at the left end portion of the shank 11. In other words, the handle 11 includes a front portion 13 and a rear portion 14, the front portion 13 and the rear portion 14 being disposed so as to face each other in the front-rear direction, and an intermediate portion 15, the intermediate portion 15 connecting left end portions of the front portion 13 and the rear portion 14 to each other and extending from the front portion 13 to form a bottom surface 12a. The front portion 13 is connected to one side of the intermediate portion 15 in the front-rear direction, and the rear portion 14 is connected to the other side of the intermediate portion 15 opposite to the one side in the front-rear direction. The front portion 13, the intermediate portion 15, and the rear portion 14 are connected so that the upper ends thereof are flush, and the distances between the lower ends thereof and the upper ends thereof are formed in the order of the rear portion 14, the intermediate portion 15, and the front portion 13 from short to long. The lower ends of the front portion 13, the rear portion 14, and the intermediate portion 15 are each disposed at a position above the guide groove 21a of the element guide 20 in the up-down direction.
As shown in fig. 1 and 2, the element guide 20 has a guide groove 21a for guiding the fastener element row 93 of the slide fastener 91 in the front-rear direction as described above. The guide groove 21a is a groove in the shape of a figure コ opened downward, and is formed at an angle with respect to the vertical direction. The guide groove 21a is formed so as to be inclined to the left as going upward. The angle of the guide groove 21a is, for example, 45 ° or more and less than 90 °. In the element guide 20, below the region B where the needle of the sewing machine reciprocates, a needle passing hole 22 penetrating in the up-down direction is formed in an oblong shape long in the left-right direction. Further, an attachment portion 23 is provided on the upper surface of the element guide 20 located forward of the needle hole 22.
In the element guide 20 of the present embodiment, not only the guide groove 21a formed obliquely leftward as going upward but also another guide groove 21b formed obliquely rightward as going upward are formed, but also another guide groove 21b may not be formed. The guide position changing mechanism 30 of the present embodiment is configured to use the left guide groove 21a, that is, the shape of the cam groove 66 described later. When the other guide groove 21b is used, the guide position changing mechanism 30 having a cam groove of a different shape is applied.
Further, a protrusion 24 extending rearward is provided between the left and right guide grooves 21a, 21b at the rear end portion of the element guide 20. The protrusion 24 presses the vicinity of the boundary between the portion where the fastener element row 93 is sewn and the other portion where the fastener element row 93 is not sewn, and bends the fastener tape 92 to raise the fastener element row 93, thereby facilitating entry into the left guide groove 21a.
The guide position changing mechanism 30 mechanically couples the element guide 20 to the handle 11, and changes the left and right positions of the element guide 20 in accordance with the height of the element guide 20 relative to the handle 11 during sewing as described above.
The guide position changing mechanism 30 includes a support mechanism 31 that supports the element guide 20, a biasing member 50 that biases the element guide 20 downward via the support mechanism 31, a cam mechanism 60 disposed between the handle 11 and the support mechanism 31, and a timing adjusting unit 80 that adjusts the timing of operation of the cam mechanism 60.
As shown in fig. 2 to 7, the support mechanism 31 includes a fixed shaft 32, a guide holder 35, a first guide shaft 41, and a second guide shaft 45.
Referring to fig. 2 to 4, the fixed shaft 32 penetrates through a through hole 23a formed in the mounting portion 23 of the element guide 20 and penetrates in the left-right direction, and is positioned and fixed to the element guide 20 by a stopper screw 33. The fixed shaft 32 is inserted through a hole 70a formed in a pin holding block 70 of the cam mechanism 60, which will be described later, and is also fixed to the pin holding block 70 by a stopper screw 72. The fixed shaft 32 is inserted into bearings 34a and 34b, and is provided so as to be movable relative to the guide holder 35 in the left-right direction, and the bearings 34a and 34b are fitted into support holes 37a and 38a formed in a pair of left and right shaft support portions 37 and 38 of the guide holder 35.
The guide holding portion 35 is formed with a recess 36 wider than the mounting portion 23 in the left-right direction at the lower side so that the mounting portion 23 of the element guide 20 fixed to the fixed shaft 32 can relatively move in the left-right direction. The guide holder 35 has a pair of shaft support portions 37 and 38 on both sides in the left-right direction of the recess 36, and the shaft support portions 37 and 38 are provided with support holes 37a and 38a for supporting the bearings 34a and 34 b. The guide holder 35 has a plate-like portion 39 extending forward from the lower surfaces of the pair of shaft support portions 37 and 38 and extending in the left-right direction, and a support hole (not shown) for supporting the bearing 40 through which the second guide shaft 45 passes is formed in the plate-like portion 39 so as to penetrate in the up-down direction.
As shown in fig. 3 and 4, the first guide shaft 41 penetrates a hole 35a formed in the guide holder 35 in the left-right direction, and is fixed in position by a stopper screw 42. The first guide shaft 41 extends in the left-right direction above the fixed shaft 32 and parallel to the fixed shaft 32. In addition, one end (right end) of the first guide shaft 41 is inserted into a bearing 43, and the bearing 43 is provided in a hole 70b formed in the pin holding block 70. The guide holding portion 35 is not swingable about the fixed shaft 32 by the first guide shaft 41 and is relatively movable in the left-right direction with respect to the pin holding block 70.
As shown in fig. 6, the second guide shaft 45 penetrates the hole 11a formed in the lower surface of the intermediate portion 15 of the handle 11, is fixed in position by the stopper screw 46, and penetrates the bearing 40 of the plate portion 39 of the guide holding portion 35 in a movable manner. Thereby, the guide holding portion 35 and the element guide 20 are guided in the up-down direction with respect to the stem 11 via the second guide shaft 46.
The biasing member 50 is a coil spring, and is disposed on the upper surface of the guide holder 35 around a support shaft 52 extending in the up-down direction. The support shaft 52 penetrates the hole 35b formed in the guide holder 35, and is fixed in position by the set screw 51, and the upper portion of the support shaft 52 penetrates the through hole 14a formed in the rear portion 14 of the handle 11 so as to be movable in the up-down direction. The urging member 50 is disposed so as to be extendable and retractable between the lower surface of the rear portion 14 of the lever 11 and the upper surface of the guide holding portion 35.
As shown in fig. 1 to 3, the cam mechanism 60 includes a base member 61 fixed to the lever 11, a cam block 65 mounted so as to be movable in the up-down direction with respect to the base member 61, a cam groove 66, a pin holding block 70 for holding a cam pin 71 that moves in the cam groove 66, and a substantially L-shaped block cover 75 fixed to the cam block 65.
Specifically, the base member 61 is fixed to the right side surface of the front portion 13 of the handle 11, and a slit 62 having a T-shape in plan view extending in the up-down direction is formed in a middle portion in the left-right direction of the base member 61. A table portion 63 is provided on the right upper portion of the base member 61, and extends through an adjustment shaft 82 extending downward from a timing adjustment knob 81 described later.
As also shown in fig. 9, the cam block 65 includes a block main body 67 formed in a substantially rectangular parallelepiped shape, and a protruding portion 68 protruding forward from the block main body 67 and fitted in the slit 62 of the base member 61 to be guided in a T-shape in plan view. The cam groove 66 includes a first groove portion 66a extending in the vertical direction and a second groove portion 66b inclined or bent (inclined in the present embodiment) from the upper end portion of the first groove portion 66a toward one side in the horizontal direction. The cam groove 66 may be formed as a through hole penetrating the block body 67 of the cam block 65 in the front-rear direction. The inclination angle of the second groove portion 66b is, for example, 45 ° or more and less than 90 °, more preferably 45 ° or more and less than 60 °. Further, an internal thread portion 67a that is screwed with the external thread of the adjustment shaft 82 is formed on the upper surface of the cam block 65.
As shown in fig. 8, the pin holding block 70 includes a cam pin 71, and the cam pin 71 is inserted through a hole 70c (see fig. 2) penetrating in the front-rear direction and fixed in position by a stopper screw 76, and a bearing 77 is attached around the cam pin 71. As shown in fig. 3 and 4, holes 70a and 70b penetrating the fixed shaft 32 and the first guide shaft 41 in the left-right direction are formed in the pin holding block 70, and the bearing 43 is disposed in the hole 70b penetrating the first guide shaft 41. The fixed shaft 32 penetrating the hole 70a of the pin holding block 70 is fixed to the pin holding block 70 by the stopper screw 72.
The operation of the sewing machine presser foot 10 of the present embodiment will be described in detail below. Fig. 10 is a front view of a main portion of the sewing machine presser foot 10 showing a positional relationship between the cam groove 66 and the cam pin 71 when the fastener element row 93 other than the switching portion C (X point in fig. 13) is guided. In fig. 10, for example, a piece of cloth 95 and a fastener tape 92 are sewn. Fig. 11 is a front view of a main portion of the sewing machine presser foot 10 showing a positional relationship between the cam groove 66 and the cam pin 71 when the fastener element row 93 of the switching portion C (Y point in fig. 13) is guided. In fig. 11, a plurality (e.g., 3) of cloth pieces 95, 95 and a fastener tape 92 are sewn. As shown in fig. 10, the position of the element guide 20 in the left-right direction is maintained at the initial position by the urging force of the urging member 50 except for the switching portion C. The initial position of the element guide 20 in the left-right direction means a state in which the element guide 20 is located at the right end in the movable left-right direction.
As shown in fig. 10, when the element guide 20 moves upward against the urging force of the urging member 50 due to the total thickness of the fastener tape 92 and the cloth 95 disposed on the sewing machine table M, the pin holding block 70 moves upward with the movement of the element guide 20. At this time, the element guide 20 moves upward only by the pin holding block 70, the fixed shaft 32, and the guide holding portion 35 until the element guide 20 reaches a predetermined height range with respect to the stem 11, that is, while the cam pin 71 and the bearing 77 are positioned in the first groove portion 66a of the cam groove 66, the position of the element guide 20 in the left-right direction is the initial position.
On the other hand, when the element guide 20 moves further upward beyond the predetermined height range, as shown in fig. 11, the cam pin 71 and the bearing 77 move obliquely upward along the inside of the second groove portion 66b of the cam groove 66, the pin holding block 70 moves upward and leftward with respect to the cam block 65, and the element guide 20 also moves upward and leftward via the fixed shaft 32. That is, the position of the element guide 20 in the left-right direction is located to the left of the initial position.
The diameter of the cam pin 71 is smaller than the diameter of the cam groove 66, and the cam pin 71 is movably fitted into the cam groove 66. The cam pin 71 moves counterclockwise rotationally along the inclined surface of the cam groove 66. That is, in fig. 10, the cam pin 71 moves in contact with the right end surface of the cam groove 66 when moving upward, and the cam pin 71 moves in contact with the left end surface of the cam groove 66 when moving downward. In fig. 11, the cam pin 71 moves in contact with the upper right inclined surface of the cam groove 66 when moving upward, and the cam pin 71 moves in contact with the lower left inclined surface of the cam groove 66 when moving downward.
Returning to fig. 1, the block cover 75 is fixed to the right side surface of the cam block 65, and is bent to abut against the rear surface of the pin holding block 70. Thereby, the restricting pin holding block 70 is displaced in the front-rear direction when moving in the up-down direction or the left-right direction.
The timing adjustment unit 80 rotates the timing adjustment knob 81, and moves the cam block 65 up and down via the adjustment shaft 82 while guiding the cam block 65 via the base member 61 fixed to the lever 11. Thereby, the timing adjustment unit 80 adjusts the height of the cam block 65 with respect to the stem 11 and the base member 61, and sets the start timing of the movement of the element guide 20 with respect to one side of the stem 11 in the lateral direction.
A fixing screw 84 is provided on the right side surface of the base member 61, and the fixing screw 84 is used to fix the cam block 65 to the base member 61 after the height adjustment of the base member 61 by the timing adjustment knob 81.
Further, a height display portion 85 is attached to the rear surface of the base member 61, and the height display portion 85 displays a scale for confirming the height position of the cam block 65.
Thus, in a plan view of the sewn product 9 in which the spiral elements of the pair of fastener element rows 93, 93 are engaged with each other, as shown in fig. 13, the position of the sewing line 94 at the switching portion C is farther from the abutting surface 96 of the facing cloth materials 95 than the portions other than the switching portion C. Since the switching portion C is sewn at a position that is longer than the portion other than the switching portion C from the abutting surface 96, the abutting surface 96 at the switching portion C is positioned slightly closer to the sewing line 94 than the abutting surface 96 other than the switching portion C by the tension of the sewing line 94. That is, by positioning the abutting surface 96 at the switching portion C on the sewing line 94 side, the contact area between the cloth of the sewn article 9 and the slider can be reduced, and the sliding resistance can be reduced. Therefore, when the slider, not shown, passes through the switching portion C, it is possible to prevent the slider from being laborious to slide at a thick portion of the cloth, such as the switching portion of the cloth, and it is possible to prevent the slide fastener 91 and the cloth 95 from being broken by repeating the sliding of the slider.
Further, the timing adjustment unit 80 can adjust the height of the cam block 65 with respect to the stem 11 and set the start timing of the movement of the element guide 20 with respect to the stem 11 in one lateral direction, and therefore, can easily set the start timing of the movement of the element guide 20 with respect to the stem 11 in one lateral direction in advance according to the thicknesses of the fastener tape 92 and the cloth 95.
The present utility model is not limited to the above-described embodiments, and can be appropriately modified and improved.
For example, in the present embodiment, the cam block 65 is attached to the shank 11 side, and the pin holding block 70 is provided to the element guide 20 side, but the present utility model is not limited thereto.
That is, in the present utility model, the cam block 65 may be attached to one side of the stem 11 and the element guide 20, and the pin holding block 70 may be attached to the other side of the stem 11 and the element guide 20.
The fact that the cam block 65 or the pin holding block 70 is attached to the shank 11 side means that it may be attached to the base member 61 fixed to the shank 11 as in the present embodiment, or may be directly attached to the shank 11 in a case where the base member 61 is integrally formed with the shank 11.
The fact that the cam block 65 or the pin holding block 70 is attached to the element guide 20 means that it may be attached to the fixed shaft 32 fixed to the element guide 20 as in the present embodiment, or may be another structure that integrally operates with the element guide 20.
In the present embodiment, a single mounting portion 23 is provided at the center in the lateral direction of the upper surface of the element guide 20, and a pair of shaft support portions 37, 38 of the guide holding portion 35 are disposed with a gap in the lateral direction from the mounting portion 23 by the recess 36. The fixed shaft 32 is fixedly attached to the attachment portion 23, and penetrates a pair of shaft support portions 37 and 38 through bearings 34a and 34b so as to be movable in the left-right direction.
However, the present utility model is not limited to this, and for example, a single shaft support portion may be provided on the lower surface of the guide holder 35, and a pair of attachment portions may be disposed on both sides in the left-right direction of the upper surface of the element guide 20 with a left-right direction gap between the attachment portions and the shaft support portion through the recess. The fixed shaft 32 may be fixedly attached to the pair of attachment portions, and may extend through the shaft support portion via a bearing so as to be movable in the left-right direction.
In the present embodiment, the cam mechanism is used as the guide position changing mechanism for changing the left and right positions of the element guide in accordance with the height of the element guide relative to the handle during sewing, but the guide position changing mechanism of the present utility model may be configured using a gear mechanism or a link mechanism.
As described above, the following matters are disclosed in the present specification.
(1) A sewing machine presser foot mounted to a sewing machine for sewing a slide fastener to a cloth, the sewing machine presser foot comprising:
A handle mounted to a presser bar of the sewing machine;
A fastener element guide mounted to the handle so as to be movable in the up-down direction and the right-left direction, the fastener element guide having a guide groove for guiding the fastener element row in the sewing direction of the sewing machine, and
And a guide position changing mechanism that changes a left-right position of the element guide in accordance with a height of the element guide relative to the handle during sewing.
According to this structure, it is possible to suppress the slider from becoming laborious to slide at the thick portion of the cloth such as the switching portion of the cloth.
(2) In the sewing machine presser foot according to (1), the guide position changing mechanism includes a cam mechanism that moves the element guide only in the up-down direction with respect to the shank up to a predetermined height range, and moves the element guide to one side in the left-right direction according to the height of the element guide when the element guide moves upward beyond the predetermined height range with respect to the shank.
According to this configuration, the cam mechanism can constitute a guide position changing mechanism that changes the left and right positions of the element guide in accordance with the height of the element guide relative to the handle during sewing.
(3) The sewing machine presser foot according to (2), wherein the cam mechanism includes:
A cam block mounted on either one of the handle and the element guide and having a cam groove, and
And a pin holding block attached to the other side of the handle and the element guide, the pin holding block holding a cam pin that moves in the cam groove.
According to this structure, the cam mechanism can be compactly constituted by the cam block having the cam groove and the pin holding block holding the cam pin.
(4) The presser foot of the sewing machine according to (3), wherein the cam groove in the cam block has a first groove portion extending in the vertical direction and a second groove portion inclined or curved from an upper end portion of the first groove portion toward one side in the horizontal direction.
According to this configuration, the cam groove for imparting the above-described operation to the element guide can be simply constituted by the first groove portion and the second groove portion.
(5) In the sewing machine presser foot (10) of (3), the cam block is mounted on the shank side, and the pin holding block is mounted on the element guide side.
According to this structure, the sewing machine presser foot can be compactly constructed.
(6) The sewing machine presser foot according to (3), wherein the guide position changing mechanism includes:
A fixed shaft, one end of which is fixed to the pin holding block, and which extends in the left-right direction, and which supports the element guide by a shaft and positions and fixes the element guide;
A guide holding part pivotally supported by the fixed shaft so as not to be pivotable about the fixed shaft and relatively movable in a left-right direction with respect to the fixed shaft, and to which a support shaft penetrating the handle and extending in a vertical direction is fixed, and
And a biasing member disposed between the handle and the guide holder and configured to bias the guide holder downward with respect to the handle.
According to this configuration, the relative movement of the fixed shaft and the element guide in the lateral direction and the biasing force of the biasing member on the element guide can be simultaneously achieved via the guide holding portion.
(7) In the sewing machine presser foot according to (6), the guide holding portion is guided in the left-right direction by a first guide shaft that is attached between facing surfaces of the guide holding portion and the pin holding block so as to allow relative movement between the guide holding portion and the pin holding block in the left-right direction and is provided so as not to be swingable about the fixed shaft.
According to this configuration, the relative movement between the guide holding portion and the pin holding block in the lateral direction can be stably guided, and the guide holding portion can be prevented from swinging about the fixed shaft.
(8) In the sewing machine presser foot according to (7), the guide holding portion is guided by a second guide shaft attached to the shank so as to allow the guide holding portion to move in the up-down direction with respect to the shank.
According to this structure, the movement of the element guide and the guide holder in the up-down direction can be stably guided.
(9) The sewing machine presser foot according to (3) further includes a timing adjustment unit provided on the shank side for adjusting a height of the cam block or the pin holding block provided on the shank side with respect to the shank, and setting a start timing of movement of the element guide with respect to the shank in one of left and right directions.
According to this configuration, the start timing of the movement of the element guide to one side in the right-left direction with respect to the handle can be easily set in advance according to the thicknesses of the fastener tape and the cloth.
(10) A sewing machine comprising the sewing machine presser foot according to any one of (1) to (9).
According to this configuration, it is possible to provide a sewing machine including a sewing machine presser foot capable of suppressing a laborious sliding of a slider at a portion of a cloth thickness such as a switching portion of the cloth.
Description of the reference numerals
10 Presser foot of sewing machine
11 Handles
12 Insert holes
20-Tooth guide piece
21A, 21b guide groove
30 Guide position changing mechanism
31 Support mechanism
32 Fixed axle
35 Guide holder
41 First guide shaft
45 Second guide shaft
50 Force applying member
52 Supporting axle
60 Cam mechanism
65 Cam block
66 Cam groove
66A first groove portion
66B second groove portion
70 Pin holding block
71 Cam pin
80 Timing adjustment part
9 Sewed article
91 Zipper
92 Zipper tape
93 Zipper teeth row
94 Sewing thread
95 Cloth
A compression bar
Movable range of needle of B sewing machine capable of moving left and right relative to element guide
C switching part
M sewing machine bench.
Claims (10)
1. A sewing machine presser foot (10), the sewing machine presser foot (10) being mounted to a sewing machine for sewing a slide fastener (91) to a cloth (95), wherein the sewing machine presser foot (10) comprises:
a handle (11), wherein the handle (11) is installed on a compression bar (A) of the sewing machine;
A fastener element guide (20), wherein the fastener element guide (20) is mounted on the handle (11) in a manner capable of moving in the up-down direction and the left-right direction, and is provided with guide grooves (21 a, 21 b) for guiding the fastener element row (93) in the sewing direction of the sewing machine, and
And a guide position changing mechanism (30), wherein the guide position changing mechanism (30) changes the left and right positions of the element guide (20) according to the height of the element guide (20) relative to the handle (11) during sewing.
2. The sewing machine presser foot (10) of claim 1, wherein,
The guide position changing mechanism (30) has a cam mechanism (60), wherein the element guide (20) moves only in the up-down direction with respect to the stem (11) up to a predetermined height range, and when the element guide (20) moves upward with respect to the stem (11) beyond the predetermined height range, the cam mechanism (60) moves the element guide (20) to one side in the left-right direction according to the height of the element guide (20).
3. The sewing machine presser foot (10) of claim 2, wherein,
The cam mechanism (60) has:
A cam block (65), wherein the cam block (65) is mounted on either one side of the handle (11) and the element guide (20) and is provided with a cam groove (66), and
And a pin holding block (70), wherein the pin holding block (70) is mounted on the other side of the handle (11) and the element guide (20) and holds a cam pin (71) that moves in the cam groove (66).
4. The sewing machine presser foot (10) of claim 3, wherein,
The cam groove (66) in the cam block (65) has a first groove (66 a) along the up-down direction and a second groove (66 b) inclined or bent from the upper end of the first groove (66 a) to one side in the left-right direction.
5. The sewing machine presser foot (10) of claim 3, wherein,
The cam block (65) is mounted on the shank (11) side, and the pin holding block (70) is mounted on the element guide (20) side.
6. The sewing machine presser foot (10) of claim 3, wherein,
The guide position changing mechanism (30) is provided with:
A fixed shaft (32), wherein one end of the fixed shaft (32) is fixed to the pin holding block (70), and the fixed shaft (32) extends in the left-right direction, and the element guide (20) is axially supported, positioned and fixed;
A guide holding part (35), wherein the guide holding part (35) is axially supported on the fixed shaft (32) in a manner of being capable of relatively moving in a left-right direction relative to the fixed shaft (32) and is not capable of swinging around the fixed shaft (32), and is fixedly provided with a supporting shaft (52) penetrating the handle (11) and extending in an up-down direction, and
And a biasing member (50), wherein the biasing member (50) is disposed between the handle (11) and the guide holder (35) and biases the guide holder (35) downward with respect to the handle (11).
7. The sewing machine presser foot (10) of claim 6, wherein,
The guide holding portion (35) is guided in the left-right direction by a first guide shaft (41) and is provided so as not to be swingable about the fixed shaft (32), and the first guide shaft (41) is mounted between facing surfaces of the guide holding portion (35) and the pin holding block (70) so as to allow relative movement in the left-right direction of the guide holding portion (35) and the pin holding block (70).
8. The sewing machine presser foot (10) of claim 7, wherein,
The guide holding part (35) is guided by a second guide shaft (45) attached to the handle (11) so as to allow the guide holding part (35) to move in the up-down direction relative to the handle (11).
9. The sewing machine presser foot (10) of claim 3, wherein,
The device is further provided with a timing adjustment unit (80), wherein the timing adjustment unit (80) is provided on the side of the shank (11), adjusts the height of the cam block (65) or the pin holding block (70) provided on the side of the shank (11) relative to the shank (11), and sets the start timing of the movement of the element guide (20) relative to the shank (11) in one of the lateral directions.
10. A sewing machine provided with the sewing machine presser foot according to any one of claims 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023045367A JP2024134918A (en) | 2023-03-22 | 2023-03-22 | Sewing machine foot and sewing machine equipped with same |
| JP2023-045367 | 2023-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222100315U true CN222100315U (en) | 2024-12-03 |
Family
ID=92912584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420285506.0U Active CN222100315U (en) | 2023-03-22 | 2024-02-06 | Sewing machine presser foot and sewing machine with same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2024134918A (en) |
| CN (1) | CN222100315U (en) |
-
2023
- 2023-03-22 JP JP2023045367A patent/JP2024134918A/en active Pending
-
2024
- 2024-02-06 CN CN202420285506.0U patent/CN222100315U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024134918A (en) | 2024-10-04 |
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