CN216864502U - Head of sewing machine - Google Patents
Head of sewing machine Download PDFInfo
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- CN216864502U CN216864502U CN202220407428.8U CN202220407428U CN216864502U CN 216864502 U CN216864502 U CN 216864502U CN 202220407428 U CN202220407428 U CN 202220407428U CN 216864502 U CN216864502 U CN 216864502U
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- piece
- presser foot
- head
- sewing machine
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Abstract
The utility model provides a head of a sewing machine, comprising: the lifting pressing assembly comprises a spanner, a toggle piece, a driven piece and a presser foot component; the wrench and the poking piece are rotationally connected to the machine shell, and the driven piece is rotationally connected to the machine shell; the spanner drives the stirring piece to rotate, the stirring piece stirs one end of the driven piece, and the other end of the driven piece is connected with a presser foot component; the piece to be detected is arranged on one side of the presser foot component, and the sensor is fixed on the shell; the wire hook assembly comprises a bracket, a pulling assembly and a pressing sheet assembly; the support is connected with the driving cabinet, a Y-shaped structure is formed at the lower edge of the support, a wire hook is arranged at one end of the Y-shaped structure, and a pressing piece assembly is arranged at the other end of the Y-shaped structure; the pulling assembly is arranged in the driving cabinet; the sensor and the wire hook component are electrically connected with the electric control component. According to the utility model, the height of the pressure lever is detected by the sensor, so that when the pressure lever is lifted, the driving cabinet controls the line hook to stop at the pressing sheet component by pulling the component, and the line hook is prevented from impacting the pressing foot when moving.
Description
Technical Field
The utility model relates to the technical field of sewing equipment, in particular to the technical field of a machine head of a sewing machine.
Background
The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material so as to interweave or sew one or more layers of the sewing material; the existing flat sewing machine has the phenomenon of bird nest when starting sewing, namely, redundant facial threads are brought into the bottom thread by a machine needle, and the phenomenon of thread ball appears at the sewing position; the existing solution is to adjust the angle and force of the wire clamping and the position of the wire hooking through the wire hooking device to reduce the occurrence of bird nest phenomenon.
However, the presser foot is not considered to be in a lifting state, and when the machine is continuously stepped on, the thread hooking device can continue to hook the thread, so that the thread hooking thread hooks the thread due to the fact that the presser foot is touched after the thread hooking, the phenomena of thread hooking damage, breakage and the like are caused, and the problem that the function of the little bird nest is damaged and the machine cannot be used is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a machine head of a sewing machine, which is used for solving the problem that when a presser foot is lifted, a thread hooking device can continue to hook a thread, so that the thread hooking thread is damaged and broken due to the fact that the thread hooking thread touches the presser foot after hooking the thread. To achieve the above and other related objects, the present invention provides a head of a sewing machine, comprising:
a lifting pressing assembly comprising a wrench, a toggle member, a follower, and a presser foot member; the wrench and the poking piece are rotatably connected to the machine shell, and the driven piece is hinged to the machine shell; the spanner drives the stirring piece to rotate, the stirring piece stirs one end of the driven piece, the other end of the driven piece is connected with a presser foot member, and the driven piece drives the presser foot member to reciprocate up and down;
the workpiece to be detected is arranged on one side of the presser foot component, and the sensor is fixed on the shell; the sensor detects the up-and-down movement of the piece to be detected;
the wire hook assembly comprises a bracket, a pulling assembly and a pressing piece assembly; the support is connected with the driving cabinet, a Y-shaped structure is formed on the lower edge of the support, a wire hook is arranged at one end of the Y-shaped structure, and the pressing piece assembly is arranged at the other end of the Y-shaped structure; the pulling assembly is arranged in the driving cabinet and drives the wire hook to rotate;
the sensor and the wire hook component are electrically connected with the electric control component.
Preferably: the toggle piece comprises a shaft part and a cam; the shaft portion is coaxially connected with one end of the wrench.
Preferably: one end of the driven piece is hinged to the shell, and the other end of the driven piece is provided with a curved surface matched with the cam; the follower is also connected with the presser foot member.
Preferably: the driven piece is provided with a limiting groove, and a positioning column is arranged in the limiting groove.
Preferably: the presser foot component comprises a pressure lever, a pressure lever guide frame and a presser foot lifting plate; the presser foot lifting plate is connected to the driven member and connected to the pressure lever guide frame, and the pressure lever is arranged in the pressure lever guide frame.
Preferably: the presser foot lifter plate is provided with a groove part, and one end of the pressure bar guide frame is embedded into the groove part.
Preferably: the piece to be detected is fixed outside the compression bar guide frame, and the sensor is close to the piece to be detected.
Preferably: the lower part of the pressure rod is connected with a pressure foot, and a needle plate is arranged below the pressure foot.
Preferably: the pressing piece assembly comprises a spring piece and a clamping piece seat; one end of the spring piece is fixed on the clamping piece seat, and the other end of the spring piece is tilted.
Preferably: the sensor is a Hall sensor, and the piece to be detected is a magnet.
As described above, the head of the sewing machine of the present invention has the following beneficial effects:
according to the utility model, the height of the pressure lever is detected by the sensor, so that when the pressure lever is lifted, the driving cabinet is prohibited from controlling the line hook to rotate, and the line hook is prevented from touching the pressure foot when moving.
Drawings
FIG. 1 is a perspective view of a sewing machine of the present invention;
FIG. 2 is a front view of a head of a sewing machine according to the present invention;
FIG. 3 is an exploded view of a head of a sewing machine according to the present invention;
FIG. 4 shows an enlarged view of A of FIG. 3;
fig. 5 is a perspective view showing a presser foot lifting plate, a presser bar guide, a presser bar and a sensor of a head of a sewing machine according to the present invention.
Description of the element reference numerals
11 spanner
12 toggle piece
121 shaft part
122 cam
13 driven member
131 spacing groove
132 positioning column
14 presser foot component
141 compression bar
141a presser foot
142 compression bar guide frame
143 presser foot lifter plate
143a groove part
144 needle board
2 drive cabinet
31 to be detected
32 sensor
41 bracket
411Y-shaped structure
412 wire hook
42 pulling assembly
43 sheeting assembly
431 spring leaf
432 clamping sheet seat
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, the present invention provides a head of a sewing machine, comprising:
the lifting pressing assembly comprises a spanner 11, a toggle piece 12, a driven piece 13 and a presser foot member 14; the wrench 11 and the toggle piece 12 are rotatably connected to a housing, and the driven piece 13 is rotatably connected to the housing (not shown); the wrench 11 drives the stirring piece 12 to rotate, the stirring piece 12 stirs one end of the driven piece 13, the other end of the driven piece 13 is connected with the presser foot member 14, and the driven piece 13 drives the presser foot member 14 to move up and down;
a piece 31 to be detected and a sensor 32, wherein the piece 32 to be detected is arranged on one side of the presser foot component 14, and the sensor 32 is fixed on the machine shell; the sensor 32 detects the up-and-down movement of the piece to be detected 31 and is electrically connected with the electric control component;
the wire hook assembly comprises a bracket 41, a pulling assembly 42 and a pressing plate assembly 43; the bracket 41 is connected to the front side of the drive cabinet 2, a Y-shaped structure 411 is formed at the lower edge of the bracket 41, a wire hook 412 is arranged at one end of the Y-shaped structure 411, and a pressing sheet assembly 43 is arranged at the other end of the Y-shaped structure 411; the pulling component 42 is arranged in the driving cabinet 2, and the pulling component 42 drives the wire hook 412 to rotate; the wire hook component is electrically connected with the electric control component.
According to the utility model, the wrench 11 is rotated to drive the stirring piece 12 to rotate, and the stirring piece 12 is used for stirring the driven piece 13, so that one end of the driven piece connected with the pressure foot member 14 can be lifted and lowered, and the pressure foot member 14 can move up and down finally. In addition, the piece to be detected 31 and the sensor 32 can realize the up-and-down movement of the presser foot component 14, and the control of the thread hook component is realized through the reminding driving cabinet 2. In addition, the utility model senses the movement of the piece to be detected 31 through the sensor 32, and the piece to be detected 31 is arranged at one side of the presser foot component 14, so that the sensor 32 actually senses the up-and-down movement of the presser foot component 14; the present invention determines the elevation height of the presser foot member 14 via the sensor 32 so that when the presser foot member 14 is in an elevated state, the stop wire hook 412 rotates.
In order to enable the dial 12 and the wrench 11 to rotate synchronously, the dial 12 is now provided with a shaft portion 121 and a cam 122; the shaft portion 121 and one end of the cam 122 are coaxially connected; when the wrench 11 rotates, the shaft portion 121 is driven to rotate synchronously, so that the cam 122 drives the follower 13 to rotate.
In order to raise and lower the presser foot member 14 by the rotation of the follower 13; one end (hinge point a) of the driven part 13 is hinged to the casing (specifically, the driven part is arranged in the casing, and the driving cabinet 2 is arranged outside the casing), and the other end of the driven part 13 is provided with a curved surface matched with the cam 122; when the wrench 11 rotates downward, the cam 122 presses against the curved surface to rotate the follower 13 downward around the hinge point a; similarly, when the wrench 11 is rotated upward, the cam 122 presses against the curved surface and causes the follower 13 to rotate upward about the hinge point a.
Meanwhile, in order to limit the rotation amplitude of driven member 13, limit groove 131 is formed in driven member 13, and positioning column 132 is arranged in limit groove 131; as shown in fig. 3, when the driven member 13 rotates downward around the hinge point a, the positioning column 132 will abut against the sidewall of the lower side of the limiting groove 131, so as to prevent the driven member 13 from driving the presser foot member 14 to strike the needle plate due to excessive downward movement. Similarly, when the driven member 13 rotates upward around the hinge point a, the positioning column 132 will abut against the sidewall of the upper side of the limiting groove 131, so as to prevent the driven member 13 from exceeding the designated range upward and interfering with other components.
In order to enable the connection of the strut 141 and the follower 13; the presser foot member 14 is now provided comprising a presser bar 141, a presser bar guide 142 and a presser foot lifting plate 143; the presser foot lifting plate 143 is attached to the follower 13 (at a point other than the hinge point a); the presser bar 141 is connected to a presser foot lifting plate 143 via a presser bar guide 142. Thus, when the driven member 13 rotates downward around the hinge point a, the pressing rod 141 descends; conversely, when the driven member 13 rotates upward around the hinge point a, the pressing rod 141 is lifted.
In order to fix the presser foot lifting plate 143 with the presser bar guide 142; now, the presser foot lifting plate 143 is provided with a groove portion 143a, and one end of the presser bar guide 142 is fixed to the groove portion 143 a.
In order to effectively fix the presser bar guide 142 to the presser foot lifting plate 143, a flange is provided on one side of the presser foot lifting plate 143, and the lower end surface of one end of the presser bar holder 142 is effectively supported by the upper end surface of the flange and the bottom of the groove 143 a.
In order to connect the pressing rod 141 to the pressing rod guide 142; the upper end of the press rod 141 is now secured in the through hole by providing the end of the press rod guide 142 facing away from the presser foot lifting plate 143 with a through hole.
In order to press the fabric by the pressing rod 141, a presser foot 141a is arranged at the lower end of the pressing rod 141, and a needle plate 144 is arranged below the presser foot, so that when the pressing rod 141 falls, the presser foot 141a can be matched with the needle plate 144; when the two are combined, the fabric can be clamped between the two.
In order to fix the element 31 to be detected on the strut guide 142; the member to be detected 31 is now arranged outside the pressure bar guide frame 142; the sensor 32 is adjacent to the item to be sensed. Preferably, the sensor 32 can be a hall sensor, and the member to be detected 31 is a magnet; when the positions of the magnet and the hall sensor are changed, the hall sensor can judge the specific height H of the pressing rod guide frame 142 according to the change of the magnetic field.
In order to realize less bird nests, the wire hook assembly is arranged in front of the driving cabinet 2; one end of the Y-shaped structure 411 of the wire hook component is provided with a wire hook 412, and the other end of the Y-shaped structure 411 is provided with a pressing component 43. Specifically, the thread hooking component hooks the upper thread on the needle by rotating the thread hook 412 and then clamps the upper thread by the pressing component 43, so that redundant upper threads are prevented from being brought into the bottom thread by the needle during starting sewing, and the bird nest phenomenon is reduced.
In order to clamp the wire when the wire hook 412 moves to the presser assembly 43; the sheeting assembly 43 is now provided to include a spring plate 431 and a cassette holder 432; one end of the spring 431 is fixed to the holder 432, and the other end of the spring 431 is tilted. The spring plate 431, the holder 432 and the wire hook 412 can clamp the wire when the wire hook 412 is rotated to the presser plate assembly 43.
In summary, the height of the pressing rod 141 is detected by the sensor 32, so that when the pressing rod 141 is lifted, the electric cabinet 2 controls the wire hook 412 to stop at the pressing component 43, and the wire hook 412 is prevented from touching the pressing component 141a when falling. In addition, the utility model realizes the rotation of the driven part 13 through manually rotating the wrench 11 and indirectly through the cam 12, thereby realizing the lifting or descending of the pressure lever 141.
Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A head for a sewing machine, comprising:
a lifting pressing assembly comprising a wrench, a toggle member, a follower, and a presser foot member; the wrench and the poking piece are rotationally connected to the machine shell, and the driven piece is hinged to the machine shell; the spanner drives the stirring piece to rotate, the stirring piece stirs one end of the driven piece, the other end of the driven piece is connected with the presser foot member, and the driven piece drives the presser foot member to reciprocate up and down;
the workpiece to be detected is arranged on one side of the presser foot component, and the sensor is fixed on the shell; the sensor detects the up-and-down movement of the piece to be detected;
the wire hook assembly comprises a bracket, a pulling assembly and a pressing piece assembly; the support is connected with the driving cabinet, a Y-shaped structure is formed on the lower edge of the support, a wire hook is arranged at one end of the Y-shaped structure, and the pressing piece assembly is arranged at the other end of the Y-shaped structure; the pulling assembly is arranged in the driving cabinet and drives the wire hook to rotate;
the sensor and the wire hook component are electrically connected with the electric control component.
2. The head of a sewing machine according to claim 1, characterized in that: the toggle piece comprises a shaft part and a cam; the shaft portion is coaxially connected with one end of the wrench.
3. The head of a sewing machine according to claim 2, characterized in that: one end of the driven piece is hinged to the shell, and the other end of the driven piece is provided with a curved surface matched with the cam; the follower is also connected to the presser foot member.
4. The head of a sewing machine according to claim 2, characterized in that: the driven piece is provided with a limiting groove, and a positioning column is arranged in the limiting groove.
5. The head of a sewing machine according to claim 3, wherein: the pressure foot component comprises a pressure rod, a pressure rod guide frame and a pressure foot lifting plate; the presser foot lifting plate is connected to the driven member and connected to the pressure lever guide frame, and the pressure lever is arranged in the pressure lever guide frame.
6. The head of a sewing machine according to claim 5, wherein: the presser foot lifting plate is provided with a groove part, and one end of the pressure bar guide frame is embedded into the groove part.
7. The head of a sewing machine according to claim 5, wherein: the piece to be detected is fixed outside the compression bar guide frame, and the sensor is close to the piece to be detected.
8. The head of a sewing machine according to claim 5, wherein: the lower part of the pressure rod is connected with a pressure foot, and a needle plate is arranged below the pressure foot.
9. The head of a sewing machine according to claim 1, characterized in that: the pressing piece assembly comprises a spring piece and a clamping piece seat; one end of the spring piece is fixed on the clamping piece seat, and the other end of the spring piece is tilted.
10. The head of a sewing machine according to claim 1, characterized in that: the sensor is a Hall sensor, and the piece to be detected is a magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407428.8U CN216864502U (en) | 2022-02-24 | 2022-02-24 | Head of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407428.8U CN216864502U (en) | 2022-02-24 | 2022-02-24 | Head of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216864502U true CN216864502U (en) | 2022-07-01 |
Family
ID=82161835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220407428.8U Active CN216864502U (en) | 2022-02-24 | 2022-02-24 | Head of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216864502U (en) |
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2022
- 2022-02-24 CN CN202220407428.8U patent/CN216864502U/en active Active
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