CN216891487U - Presser foot mounting structure in sewing machine - Google Patents
Presser foot mounting structure in sewing machine Download PDFInfo
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- CN216891487U CN216891487U CN202220530271.8U CN202220530271U CN216891487U CN 216891487 U CN216891487 U CN 216891487U CN 202220530271 U CN202220530271 U CN 202220530271U CN 216891487 U CN216891487 U CN 216891487U
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Abstract
The utility model provides a presser foot mounting structure in a sewing machine, and belongs to the technical field of sewing machines. It has solved the inconvenient scheduling technical problem of dismouting of presser foot change among the current sewing machine. The sewing machine comprises a presser foot rod and a presser foot, the lower end of the presser foot rod is provided with a through hole, the presser foot mounting structure comprises a knob nut and a connecting pin, the connecting pin comprises a large outer diameter section and a small outer diameter section, the end part of the large outer diameter section is provided with a presser foot clamping position and a cover cap, a clamping groove is formed in the presser foot, the diameter of the small outer diameter section of the connecting pin and the diameter of the large outer diameter section are both smaller than the bayonet caliber of the clamping groove, the outer diameter of the presser foot clamping position is larger than the bayonet caliber of the clamping groove, the connecting pin penetrates through the clamping groove in the presser foot and the through hole in the presser foot rod, the knob nut is screwed at the end part of the small outer diameter section, and an elastic piece is further arranged on the connecting pin. The presser foot mounting structure is very convenient to assemble and replace the presser foot, improves the convenience of replacing the presser foot, is easy to manufacture each part, reduces the cost of replacing the presser foot, and is stable and reliable in connection.
Description
Technical Field
The utility model belongs to the technical field of sewing machines, and relates to a presser foot mounting structure in a sewing machine.
Background
A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a work material to interlace or stitch one or more layers of the work material. The presser foot is one of the important components of the sewing machine and is used for pressing sewing materials to ensure the sewing effect. The phenomenon of wearing and tearing will appear after the presser foot uses a period, in order to guarantee the sewing effect, need change the presser foot often, changes the presser foot and usually has two kinds of modes: firstly, the integral replacement of the presser foot handle and the presser foot bottom plate is realized by dismounting the presser foot screw, and the frequent dismounting of the presser foot screw can cause the thread sliding of the screw hole of the presser foot rod, so that the connection between the presser foot and the presser foot rod is not firm, and the replacement cost is very high; secondly, the presser foot bottom plate is replaced by disassembling the presser foot pin, the method is very troublesome to operate, the presser foot can be replaced by screwing a screw by a screwdriver, the method is very inconvenient, and the presser foot replacing efficiency is low.
Chinese patent (publication number: CN 205803781U; publication date: 2016-12-14) discloses a quickly detachable presser foot of a sewing machine, wherein the presser foot is made of plastic materials, the top of a pin hole of a connecting part at the top of the presser foot is provided with an opening, and the detachment between a hinge hole of the presser foot and a pin shaft of a presser foot handle can be conveniently realized through the opening.
Although the presser foot base plate can be replaced quickly, the presser foot base plate disclosed in the above patent documents still has the technical problems of troublesome processing of parts, inconvenient assembly, unstable and firm use and the like.
Disclosure of Invention
The utility model provides a presser foot mounting structure in a sewing machine according to the problems in the prior art, and the technical problems to be solved by the utility model are as follows: how to improve the convenience of presser foot dismouting in the sewing machine reduces the technology degree of difficulty of spare part processing and equipment simultaneously.
The purpose of the utility model can be realized by the following technical scheme:
the presser foot mounting structure in the sewing machine is characterized in that the presser foot mounting structure comprises a knob nut and a connecting pin which is a stepped shaft, the connecting pin comprises a large outer diameter section and a small outer diameter section, a presser foot clamping position and a cover cap are arranged at the end part of the large outer diameter section, a clamping groove is formed in the presser foot, the diameter of the small outer diameter section and the diameter of the large outer diameter section of the connecting pin are smaller than the bayonet caliber of the clamping groove, the outer diameter of the presser foot clamping position is larger than the bayonet caliber of the clamping groove, the connecting pin sequentially penetrates through the clamping groove in the presser foot and the through hole in the presser foot rod, the knob nut is screwed at the end part of the small outer diameter section, and an elastic piece capable of enabling the presser foot clamping position to be kept in the clamping groove is further arranged on the connecting pin.
The working principle is as follows: during installation, the cover cap of the connecting pin is positioned on one side of the presser foot and is limited with the presser foot, one end of the connecting pin penetrates through the clamping groove on the presser foot and the through hole at the lower end of the presser foot rod, the elastic piece is sleeved on the connecting pin, the knob nut is rotated to be in threaded connection with the end part of the small outer diameter section of the connecting pin, and the elastic piece is pressed by the knob nut. When the presser foot is disassembled and assembled, the knob nut is pushed to push the connecting pin out, the large outer diameter section or the small outer diameter section of the connecting pin is aligned to the clamping groove of the presser foot, and the presser foot can be taken down; after the thrust to the knob nut is removed, the knob nut drives the connecting pin to move backwards under the action of the elastic piece, so that the connecting pin returns, the clamping position of the presser foot is aligned to the clamping groove of the presser foot, and the presser foot cannot be separated from the connecting pin. The presser foot mounting structure is very convenient to assemble and replace, improves the convenience of replacing the presser foot, is easy to manufacture each part, reduces the replacement cost of the presser foot, and is stable and reliable in connection.
In the presser foot mounting structure in the sewing machine, the clamping groove is located at one side of the presser foot, and the bayonet of the clamping groove extends to the upper end face of the presser foot; a groove is formed in the other side of the presser foot, the groove is communicated with the clamping groove, and the upper side of the groove penetrates through the upper end face of the presser foot; the peripheral side of the lower end of the presser bar is a plane, and the lower end of the presser bar is inserted into the groove. Furthermore, the bayonet of draw-in groove is the throat, and the stable reliability that can further guarantee presser bar and presser foot to be connected like this prevents both relative circumferential direction.
In the presser foot mounting structure in the sewing machine, the two side surfaces of the groove are obliquely arranged so that the notch of the groove on the side surface of the presser foot is open, and the two side surfaces of the presser foot rod are matched with the two side surfaces of the groove in shape. Like this under the effect of elastic component, the lower extreme of presser bar has a trend to the recess in all the time, and the lower extreme both sides of presser bar are leaned on with the lateral wall of recess, have guaranteed the firm reliability of being connected between the two.
In the presser foot mounting structure in the sewing machine, the small outer diameter section of the connecting pin is further sleeved with a press block in a hollow cylinder shape, the connecting pin penetrates through a center hole of the press block in a sliding mode, one end of the press block abuts against the side face of the lower end of the presser foot rod, and two ends of the elastic piece act on the press block and the knob nut respectively.
In the presser foot mounting structure in the sewing machine, a gap is formed between the inner wall of the pressing block and the surface of the connecting pin, one end of the pressing block, which is close to the presser bar, is provided with an inward annular convex edge, the end of the small outer diameter section of the connecting pin is provided with an external thread, one end of the knob nut is screwed on the external thread, the other end of the knob nut is a hollow cylinder and is sleeved on the connecting pin, and the inner diameter of the hollow cylinder of the knob nut is larger than the outer diameter of the pressing block.
In the presser foot mounting structure in the sewing machine, the elastic member is a coil spring, the elastic member is sleeved on the small outer diameter section of the connecting pin, and the elastic member is located in the hollow cylinder of the knob nut and the presser foot; one end of the elastic piece is abutted against the side face of the annular convex edge, and the other end of the elastic piece is abutted against the end part of the knob nut.
In the presser foot mounting structure in the sewing machine, the presser foot clamp is located between the end of the large outer diameter section and the cap, and the side surface of one side of the presser foot clamp has a yielding plane. The connecting pin can be separated from the clamping groove by rotating the connecting pin and the clamping position of the presser foot.
Compared with the prior art, the presser foot mounting structure is very convenient to assemble and replace the presser foot, improves the convenience of replacing the presser foot, is easy to manufacture all parts, reduces the cost of replacing the presser foot, and is stable and reliable in connection.
Drawings
Fig. 1 is a schematic perspective view of the mounting and connection of the presser foot and the presser foot rod.
Fig. 2 is a schematic perspective view of the presser foot when detached from the presser foot bar.
Fig. 3 is an exploded view of the present presser foot mounting arrangement.
Fig. 4 is a partial sectional structural schematic view of the present presser foot mounting structure.
In the figure, 1, a presser foot rod; 1a, a through hole; 2. a presser foot; 2a, a clamping groove; 2b, a groove; 3. a knob nut; 4. a connecting pin; 4a, a large outer diameter section; 4b, a small outer diameter section; 4c, a cap; 4d, clamping the presser foot; 5. an elastic member; 6. briquetting; 6a, and an annular convex edge.
Detailed Description
The following is a detailed description of the present invention and is further described with reference to the accompanying drawings, but the present invention is not limited to these examples.
As shown in fig. 1 to 4, the sewing machine includes a presser bar 1 and a presser foot 2, a through hole 1a is provided at the lower end of the presser bar 1, the presser foot mounting structure includes a knob nut 3 and a connecting pin 4 which is a stepped shaft, the connecting pin 4 includes a large outer diameter section 4a and a small outer diameter section 4b, a presser foot clamping position 4d and a cap 4c are provided at the end of the large outer diameter section 4a, a clamping groove 2a is provided on the presser foot 2, the diameter of the small outer diameter section 4b of the connecting pin 4 is smaller than the bayonet caliber of the clamping groove 2a, the diameter of the large outer diameter section 4a of the connecting pin 4 is smaller than the bayonet caliber of the clamping groove 2a, the outer diameter of the presser foot clamping position 4d is larger than the bayonet caliber of the clamping groove 2a, the connecting pin 4 sequentially passes through the clamping groove 2a on the presser foot 2 and the through hole 1a on the presser bar 1, the knob nut 3 is screwed at the end of the small outer diameter section 4b, the bayonet of the clamping groove 2a is a, an elastic member 5 capable of keeping the clamping position 4d in the clamping groove 2a is further provided on the connecting pin 4. During installation, the cap 4c of the connecting pin 4 is positioned at one side of the presser foot 2 and limited with the presser foot 2, one end of the connecting pin 4 penetrates through the clamping groove 2a on the presser foot 2 and the through hole 1a at the lower end of the presser foot rod 1, the elastic piece 5 is sleeved on the connecting pin, the knob nut 3 is rotated and is screwed at the end part of the small outer diameter section 4b of the connecting pin 4, and the knob nut 3 presses the elastic piece 5. When the presser foot 2 is disassembled and assembled, the knob nut 3 is pushed to push the connecting pin 4 out, the large outer diameter section 4a or the small outer diameter section 4b of the connecting pin 4 is aligned to the clamping groove 2a of the presser foot 2, and the presser foot 2 can be taken down; after the pushing force on the knob nut 3 is removed, the knob nut 3 drives the connecting pin 4 to move backwards under the action of the elastic piece 5, so that the connecting pin 4 returns, the presser foot clamping position 4d of the connecting pin aligns to the clamping groove 2a of the presser foot 2, and the presser foot 2 cannot be separated from the connecting pin 4. This presser foot mounting structure equipment and change presser foot 2 are very convenient, have improved the convenience of changing presser foot 2, and each spare part is made easily, has reduced the cost that presser foot 2 was changed, connects reliable and stable moreover.
Further, as shown in fig. 3 and 4, the clamping groove 2a is located at one side of the presser foot 2 and the bayonet of the clamping groove 2a extends to the upper end surface of the presser foot 2; a groove 2b is formed in the other side of the presser foot 2, the groove 2b is communicated with the clamping groove 2a, and the upper side of the groove 2b penetrates through the upper end face of the presser foot 2; the side all around of the lower extreme of presser bar 1 is the plane and in the lower extreme of presser bar 1 inserted groove 2b, the stability and reliability that assurance presser bar 1 that can be further is connected with presser foot 2 like this prevents both relative circumferential direction. The two side surfaces of the groove 2b are obliquely arranged, so that the notch of the groove 2b on the side surface of the presser foot 2 is open, and the two side surfaces of the presser foot rod 1 are matched with the two side surfaces of the groove 2b in shape. Like this under the effect of elastic component 5, the lower extreme of presser bar 1 has a trend to in the recess 2b all the time, and the lower extreme both sides of presser bar 1 are leaned on with the lateral wall of recess 2b, have guaranteed the firm reliability of being connected between the two.
As shown in fig. 3 and 4, a pressing block 6 in the form of a hollow cylinder is further sleeved on the small outer diameter section 4b of the connecting pin 4, the connecting pin 4 slides through a central hole of the pressing block 6, one end of the pressing block 6 abuts against the side surface of the lower end of the presser foot rod 1, and two ends of the elastic element 5 respectively act on the pressing block 6 and the knob nut 3; the clearance has between 4 faces of inner wall and the connecting pin of briquetting 6, and briquetting 6 is close to the one end of presser bar pole 1 and has inside annular protruding edge 6a, and the little external diameter section 4b tip of connecting pin 4 has the external screw thread, and the one end spiro union of knob nut 3 is on the external screw thread, and the other end of knob nut 3 is the cavity barrel and overlaps and establish on connecting pin 4, and the cavity barrel internal diameter of knob nut 3 is greater than the external diameter of briquetting 6.
In the embodiment, the elastic part 5 is a spiral spring, the elastic part 5 is sleeved on the small outer diameter section 4b of the connecting pin 4, and the elastic part 5 is positioned in the hollow cylinder body of the knob nut 3 and the pressing block 6; one end of the elastic member 5 abuts against the side surface of the annular flange 6a, and the other end abuts against the end of the knob nut 3.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (6)
1. A presser foot mounting structure in a sewing machine, the sewing machine comprises a presser foot rod (1) and a presser foot (2), the lower end of the presser foot rod (1) is provided with a through hole (1a), the presser foot mounting structure is characterized in that the presser foot mounting structure comprises a knob nut (3) and a connecting pin (4) which is a stepped shaft, the connecting pin (4) comprises a large outer diameter section (4a) and a small outer diameter section (4b), the end part of the large outer diameter section (4a) is provided with a presser foot clamping position (4d) and a cover cap (4c), the presser foot (2) is provided with a clamping groove (2a), the diameter of the small outer diameter section (4b) and the diameter of the large outer diameter section (4a) of the connecting pin (4) are both smaller than the bayonet caliber of the clamping groove (2a), the outer diameter of the presser foot clamping position (4d) is larger than the bayonet of the clamping groove (2a), and the connecting pin (4) sequentially passes through the clamping groove (2a) on the presser foot rod (2) and the through hole (1a) on the presser foot rod (1), the knob nut (3) is screwed at the end part of the small outer diameter section (4b), and the connecting pin (4) is also provided with an elastic piece (5) which can keep the presser foot clamping position (4d) in the clamping groove (2 a).
2. The presser foot mounting structure in a sewing machine according to claim 1, wherein said catch groove (2a) is located at one side of said presser foot (2) and a bayonet of said catch groove (2a) extends to an upper end face of said presser foot (2); a groove (2b) is formed in the other side of the presser foot (2), the groove (2b) is communicated with the clamping groove (2a), and the upper side of the groove (2b) penetrates through the upper end face of the presser foot (2); the peripheral side surface of the lower end of the presser bar (1) is a plane, and the lower end of the presser bar (1) is inserted into the groove (2 b).
3. Presser foot mounting structure in sewing machine according to claim 2, characterized in that both side faces of the groove (2b) are provided obliquely so that the notch of the groove (2b) at the side face of the presser foot (2) is open-ended, and both side faces of the presser bar (1) are matched with both side face shapes of the groove (2 b).
4. The presser foot mounting structure in a sewing machine according to claim 2 or 3, wherein a press block (6) in a hollow cylindrical shape is further sleeved on the small outer diameter section (4b) of the connecting pin (4), the connecting pin (4) is slidably passed through a central hole of the press block (6), one end of the press block (6) abuts against the lower end side of the presser bar (1), and both ends of the elastic member (5) respectively act on the press block (6) and the knob nut (3).
5. The presser foot mounting structure in a sewing machine according to claim 4, wherein a gap is provided between an inner wall of the presser block (6) and a surface of the connecting pin (4), one end of the presser block (6) close to the presser bar (1) has an inward annular flange (6a), an end of the small outer diameter section (4b) of the connecting pin (4) has an external thread, one end of the knob nut (3) is screwed on the external thread, the other end of the knob nut (3) is a hollow cylinder and is sleeved on the connecting pin (4), and an inner diameter of the hollow cylinder of the knob nut (3) is larger than an outer diameter of the presser block (6).
6. The presser foot mounting structure in a sewing machine according to claim 5, wherein said elastic member (5) is a coil spring, said elastic member (5) is fitted over a small outer diameter section (4b) of said connecting pin (4), said elastic member (5) is located in a hollow cylinder of said knob nut (3) and said presser piece (6); one end of the elastic piece (5) is abutted against the side surface of the annular convex edge (6a), and the other end of the elastic piece is abutted against the end part of the knob nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220530271.8U CN216891487U (en) | 2022-03-11 | 2022-03-11 | Presser foot mounting structure in sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220530271.8U CN216891487U (en) | 2022-03-11 | 2022-03-11 | Presser foot mounting structure in sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216891487U true CN216891487U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220530271.8U Active CN216891487U (en) | 2022-03-11 | 2022-03-11 | Presser foot mounting structure in sewing machine |
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| Country | Link |
|---|---|
| CN (1) | CN216891487U (en) |
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- 2022-03-11 CN CN202220530271.8U patent/CN216891487U/en active Active
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Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |