CN210420452U - Upper differential knob adjusting mechanism and sewing machine - Google Patents
Upper differential knob adjusting mechanism and sewing machine Download PDFInfo
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- CN210420452U CN210420452U CN201921126205.9U CN201921126205U CN210420452U CN 210420452 U CN210420452 U CN 210420452U CN 201921126205 U CN201921126205 U CN 201921126205U CN 210420452 U CN210420452 U CN 210420452U
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- adjusting
- sewing machine
- shell
- knob
- crank
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Abstract
The utility model provides an go up differential knob adjustment mechanism and sewing machine, it includes: the adjusting column is fixedly connected with the knob, a thread section connected with the shell thread of the sewing machine is arranged on the adjusting column, and a spherical section with a spherical surface on the outer surface is arranged at the end part of the adjusting column; the adjusting crank is fixedly connected with an adjusting shaft for adjusting and controlling the front and rear cloth feeding amount of the upper cloth feeding teeth in the sewing machine, a plane part is arranged on the adjusting crank, and the spherical surface section of the adjusting column is abutted against the plane part; the knob is rotated to drive the adjusting column to move up and down relative to the sewing machine shell, and the adjusting column acts on the adjusting crank to drive the adjusting shaft to rotate. The utility model discloses simple structure, the installation is easily dismantled, and need not to occupy the right-hand member space of casing, and it can make automatically controlled subassembly dress at the right-hand member of casing.
Description
Technical Field
The utility model relates to a sewing machine technical field especially relates to an go up differential knob adjustment mechanism.
Background
The overedger is provided with an upper feeding structure and a lower feeding structure, the upper feeding structure is driven by a main shaft, and an oscillating shaft, an adjusting shaft and the like are arranged between the upper feeding shaft and the main shaft. Generally, the amplitude of the front-back swing of the upper feed dog in the upper feeding mechanism is set by an upper differential adjusting part positioned in the inner cavity of the machine shell and above the main shaft.
As shown in fig. 1, the sewing machine includes a housing 1, a main shaft 2, an upper differential adjusting part 3, an upper differential feeding part 4, and an upper feeding driving part 5. Wherein the upper feeding driving part 5 comprises a connecting rod 52 which is matched with the main shaft 1 to rotate, and the connecting rod 52 is hinged with the crank 51 through a pin. The crank 51 and the crank 53 are relatively fixed through a shaft, the crank 53 and the feeding connecting rod 54 are matched through a pin, a slide block and the like to drive the crank 54 to swing, and the crank 54 is relatively fixed with the upper differential feeding part 4. The upper differential adjustment refers to the forward and backward movement of the upper differential feeding part 4. The upper differential adjusting section 3 includes a lock plate 31, a lock nut 32, an adjusting plate 33, an adjusting shaft 34, and an adjusting crank 35. Wherein the locking plate 31 is fixed on the casing 1 and the locking nut 32 is fixed opposite to the adjusting plate 33. The adjusting plate 33 is fixed with the adjusting shaft 34, the locking nut 32 needs to be loosened during adjustment, the locking nut 32 needs to be locked after the position is adjusted, and the adjusting process is relatively complicated. The adjusting plate 33 is fixed with the adjusting shaft 34, as shown in fig. 2, the adjusting shaft 34 is generally configured to be a special-shaped structure, so as to ensure the fixing strength of the adjusting plate 33.
The upper differential adjustment mode is realized by extending the adjusting shaft 34 to the outside of the casing and by arranging the locking plate 31, the adjusting plate 33 and other structures outside the casing for matching adjustment, so that the whole structure is complex and the adjustment process is relatively complicated. And the electric control of the sewing machine can not be arranged at the right end part of the machine due to the adjustment of the extension section outside the shell.
Therefore, there is a need for an upper differential adjustment structure that is simple in structure and easy to adjust.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an upper differential knob adjusting mechanism and a sewing machine, which are used for solving the problems of the prior art that the upper differential knob adjusting mechanism is complex in structure and is not easy to adjust.
To achieve the above and other related objects, the present invention provides an upper differential knob adjusting mechanism, which includes: the adjusting column is fixedly connected with the knob, a thread section connected with the shell thread of the sewing machine is arranged on the adjusting column, and a spherical section with a spherical surface on the outer surface is arranged at the end part of the adjusting column; the adjusting crank is fixedly connected with an adjusting shaft for adjusting and controlling the front and rear cloth feeding amount of the upper cloth feeding teeth in the sewing machine, a plane part is arranged on the adjusting crank, and the spherical surface section of the adjusting column is abutted against the plane part; the knob is rotated to drive the adjusting column to move up and down relative to the sewing machine shell, and the adjusting column acts on the adjusting crank to drive the adjusting shaft to rotate.
Preferably, the adjusting device further comprises a spring connected with the adjusting crank and used for keeping the spherical section and the plane part in contact with each other.
Preferably, the sewing machine shell comprises a shell and an upper cover fixed on the shell, the knob is located above the upper cover, and the adjusting column is in threaded connection with the upper cover.
Preferably, the sewing machine shell comprises a shell and an upper cover fixed on the shell, the knob is positioned on the shell, and the adjusting column is in threaded connection with the shell.
Preferably, the adjusting crank is provided with a limit pin for limiting the swing range of the adjusting crank.
Preferably, the adjusting device further comprises a pre-tightening component for pre-tightening the adjusting column in the sewing machine shell.
Preferably, the pre-tightening assembly comprises a pre-tightening spring, one end of the pre-tightening spring is connected with a locking piece for locking the adjusting column and the shell of the sewing machine, and the other end of the pre-tightening spring abuts against a groove in the shell of the sewing machine.
Preferably, the sewing machine shell is provided with a scale plate, and the knob is provided with an indicating part matched with the scale plate.
The utility model also provides a sewing machine, sewing machine have as above go up differential knob adjustment mechanism.
As above, the utility model discloses an go up differential knob adjustment mechanism and sewing machine has following beneficial effect: the fixing mode of the adjusting crank and the adjusting shaft is easy to realize, the adjusting shaft does not need to be specially processed, and only a cylindrical shaft structure is needed; in addition, the utility model changes the rotation of the adjusting shaft through the up-and-down movement of the adjusting column, so the upper differential knob adjusting mechanism does not need to occupy the right end space of the casing, and the electric control component can be arranged at the right end part of the casing; the whole upper differential knob adjusting mechanism can be modularized and is easy to install and use.
Drawings
Fig. 1 is a schematic view of a feeding mechanism of a sewing machine in the prior art.
Fig. 2 shows a schematic view of an adjusting shaft in the prior art.
Fig. 3 is a schematic view of the feeding mechanism of the sewing machine according to the present invention.
Fig. 4 shows the installation schematic diagram of the upper differential knob adjusting mechanism of the present invention.
Fig. 5 is a schematic view of the upper differential knob adjusting mechanism of the present invention.
Description of the element reference numerals
1 case
2 spindle
3 upper differential adjusting part
31 locking plate
32 lock nut
33 regulating plate
34 adjusting shaft
35 adjusting crank
4 upper differential feeding part
5 upper feeding driving part
52 connecting rod
51. 53 crank
54 feeding connecting rod
6 casing
7 electric control assembly
8 go up differential knob adjustment mechanism
81 knob
82 adjusting column
821 threaded section
822 spherical segment
83 adjusting crank
831 plane part
832 spacing pin
84 adjusting shaft
85 regulating arm fork
9 Upper cover
91 graduated plate
92 locking member
93 groove
100 upper feed dog assembly
201 drive shaft
203 transmission rod
204 crank
205 slide block
300 front and back cloth feeding shafts
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
In the present invention, the "front-back" means the front-back direction in the cloth feeding direction, and the "left-right" means the left-right direction when the sewing machine is viewed from the front. The term "up and down" refers to the up and down direction of the sewing machine.
The utility model provides a sewing machine, it has the drive and goes up feed dog subassembly 100 and make the fore-and-aft volume actuating mechanism of seesaw, still has the drive and goes up feed dog subassembly 100 and make the up-and-down volume actuating mechanism of up-and-down motion, and swing through last feed dog fore-and-aft direction forms the work feed orbit with the feed lifting teeth combined action of upper and lower direction. As shown in fig. 5, the front and rear drive mechanism includes an upper feed dog group 100, a front and rear amount adjustment mechanism, and a front and rear feed shaft 300 drivingly connected to a main shaft (not shown), the upper feed dog assembly 100 includes an upper feed dog and an upper feed dog holder, the upper feed dog assembly 100 is connected to the front and rear feed shaft 300, the main shaft drives the front and rear feed shaft 300 to rotate so as to realize front and rear movement of the upper feed dog in the upper feed dog assembly 100, and the adjustment shaft 84 in the front and rear amount adjustment mechanism is connected to the front and rear feed shaft 300 so as to adjust a swing angle of the front and rear feed shaft 300.
The front and rear feed shafts 300, the adjusting shaft 84, and the main shaft in this embodiment are rotatably supported in the left and right directions in the housing of the sewing machine, and the main shaft is a main driving shaft in the sewing machine and serves as a power source for the front and rear swinging and the up and down swinging of the upper feed dog assembly 100. In the embodiment, the main shaft rotates through the connecting rod driving shaft 201 to drive the transmission rod 203 to swing, the connecting rod 203 drives the front and back cloth feeding shafts 300 to swing through the crank 204, and the swing amplitude of the front and back cloth feeding shafts 300 determines the front and back swing amount of the upper cloth feeding tooth frame, so that the upper cloth feeding teeth are driven to feed cloth.
The front and rear amount adjusting mechanism in this embodiment includes an adjusting shaft 84 for adjusting the swing amplitude of the front and rear cloth feeding shafts 300, which may be specifically: the adjusting shaft 84 is provided with an adjusting arm fork 85, the transmission rod 203 is provided with a sliding block 205 in a sliding manner, another sliding block (not shown) connected with the sliding block 205 is positioned in the adjusting arm fork 85, when the adjusting shaft 84 rotates, the adjusting arm fork 85 is driven to rotate so as to change the angle of the adjusting arm fork 85 relative to the horizontal plane, the adjusting arm fork 85 drives the sliding block 205 to slide along the transmission rod 203, the distance between the sliding block 205 and the center of the main shaft is changed, and the swinging amplitude of the front and rear cloth feeding shafts 300 is changed according to the transmission relation.
In order to adjust above-mentioned regulating spindle and rotate, and then change the angle of the relative horizontal plane of regulating arm fork 85, the utility model discloses mainly adjust the regulating spindle through last differential knob adjustment mechanism and rotate, it is shown in fig. 3 to 5 to see, goes up differential knob adjustment mechanism 8 and includes: a knob 81, an adjusting column 82 fixedly connected with the knob 81, wherein the adjusting column 82 is provided with a thread section 821 in thread connection with a sewing machine shell (in the embodiment, the outer contour of the sewing machine formed by the machine shell 6 and an outer cover 9 fixed on the machine shell 6 is called as the shell), and the end part of the adjusting column 82 is provided with a spherical section 822 with a spherical surface on the outer surface; the adjusting crank 83 is fixedly connected with the adjusting shaft 84 (namely, the adjusting shaft 84 is used for adjusting and controlling the front and rear cloth feeding amount of the upper cloth feeding teeth in the sewing machine), the adjusting crank 83 is provided with a plane part 831, and the spherical section 822 of the adjusting column 82 is abutted against the plane part 831 and can move on the plane part 831; the knob 81 is rotated to drive the adjusting post 82 to move up and down relative to the sewing machine housing, and the adjusting post 82 acts on the adjusting crank 83 to drive the adjusting shaft 84 to rotate.
The utility model drives the adjusting column 82 to move up and down by rotating the knob 81, and then the adjusting column moves on the plane part 831 of the adjusting crank 83, so as to drive the adjusting shaft 84 to rotate, change the angle of the adjusting arm fork 85 fixed on the adjusting shaft 84 relative to the horizontal plane, realize the change of the swing amplitude of the front and back cloth feeding shafts 300, and achieve the change of the front and back cloth feeding amount; the fixing mode of the adjusting crank 83 and the adjusting shaft 84 in the utility model is easy to realize, the adjusting shaft does not need to be specially processed, and the adjusting crank only needs to be a cylindrical shaft structure; in addition, the utility model changes the rotation of the adjusting shaft 84 through the up-and-down movement of the adjusting column 82, so that the upper differential knob adjusting mechanism does not occupy the right end space of the casing 6, as shown in fig. 4, the electric control component 7 can be arranged at the right end part of the casing 6; the whole upper differential knob adjusting mechanism 8 is modularized and easy to install and use.
To ensure that the adjusting post 82 is always in contact with the adjusting crank 83, a spring (not shown) is further included in connection with the adjusting crank 83 for keeping the spherical segment 822 in contact with the plane 831. The adjusting crank 83 is kept in contact with the adjusting column 82 by a pretightening force given by the spring, so that the adjustment of the upper differential knob adjusting mechanism is more stable. In this embodiment, the adjusting crank 83 is provided with a limit pin 832 for limiting the swing range of the adjusting crank 83. The swing amplitude of the adjusting crank 83 can be limited by the arrangement of the limiting pin 832, and when the adjusting column 82 is removed, the limiting pin 832 swings along with the adjusting crank 83 and contacts with the protruding part on the machine shell to realize the limiting.
The adjusting crank 83 is prevented from exceeding the limit position by the spring action after the removal of the adjusting post.
In order to facilitate installation and fixation, the sewing machine housing in this embodiment comprises a housing 6 and an upper cover 9 fixed on the housing 6, the knob 81 is positioned above the upper cover 9, and the adjusting column 82 is connected with the upper cover 9 in a threaded manner. In the embodiment, the upper differential knob adjusting mechanism 8 and the upper cover 9 are integrated together, so that the disassembly and the assembly are convenient.
The upper differential knob adjusting mechanism 8 can also be arranged on the shell of the sewing machine, and only the up-and-down movement of the adjusting column 82 is needed. The adjustment post 82 may be threadably connected to the housing.
The embodiment also includes a pre-tightening assembly for pre-tightening the adjustment post 22 in the sewing machine housing. The pretightning force of this embodiment pretension subassembly is ensured to carry out the precision with the screw hole of adjusting post 82 and sewing machine shell and is laminated, has certain frictional resistance for at normal sewing in-process, prevent that shake or not hard up condition from appearing in knob 81.
In this embodiment, the upper cover 9 is provided with a locking member 92, and the locking member 92 is fixed relative to the adjusting column 82. The pre-tightening assembly comprises a pre-tightening spring (not shown), a groove 93 is further formed in the position, used for installing the adjusting column 82, of the upper cover 9, one end of the pre-tightening spring abuts against the bottom of the groove 93, the other end of the pre-tightening spring abuts against the locking piece 92, the locking piece 92 drives the adjusting column 82 to have certain pre-tightening force, the adjusting column 82 is precisely attached to a threaded hole of the upper cover 9 under the action of the pre-tightening force, certain friction resistance exists, and the knob 81 is prevented from shaking or loosening in the normal sewing process.
In this embodiment, the top cover 9 and the knob adjusting portion 8 further include a scale plate 91 for indicating the magnitude of the differential quantity in cooperation with an indicating portion (the indicating portion may be a mark or a pointer) on the knob 81.
In the embodiment, the adjusting column 82 is driven by rotating the knob 81 to move up and down, so that the adjusting column moves on the plane 831 of the adjusting crank 83, thereby driving the adjusting shaft 84 to rotate, changing the angle of the adjusting arm fork 85 fixed on the adjusting shaft 84 relative to the horizontal plane, the adjusting arm fork 85 driving the sliding block 205 to slide along the transmission rod 203, changing the distance between the sliding block 205 and the center of the main shaft, and changing the swing amplitude of the front and rear cloth feeding shafts 300 according to the transmission relationship.
In summary, the upper differential knob adjusting mechanism of the utility model has simple structure, and can be installed in a module-divided manner (i.e. the adjusting column and the knob can be installed on the upper cover, and the adjusting crank is installed on the adjusting shaft), so that the installation is convenient and fast; the shape of the adjusting shaft is simple. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may 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 (9)
1. An upper differential knob adjustment mechanism, comprising:
the adjusting column is fixedly connected with the knob, a thread section connected with the shell thread of the sewing machine is arranged on the adjusting column, and a spherical section with a spherical surface on the outer surface is arranged at the end part of the adjusting column;
the adjusting crank is fixedly connected with an adjusting shaft for adjusting and controlling the front and rear cloth feeding amount of the upper cloth feeding teeth in the sewing machine, a plane part is arranged on the adjusting crank, and the spherical surface section of the adjusting column is abutted against the plane part;
the knob is rotated to drive the adjusting column to move up and down relative to the sewing machine shell, and the adjusting column acts on the adjusting crank to drive the adjusting shaft to rotate.
2. The upper differential knob adjustment mechanism according to claim 1, characterized in that: the spring is connected with the adjusting crank and used for keeping the spherical section to be abutted to the plane part.
3. The upper differential knob adjustment mechanism according to claim 1, characterized in that: the sewing machine shell comprises a shell and an upper cover fixed on the shell, the knob is located above the upper cover, and the adjusting column is connected with the upper cover in a threaded mode.
4. The upper differential knob adjustment mechanism according to claim 1, characterized in that: the sewing machine shell comprises a shell and an upper cover fixed on the shell, the knob is located on the shell, and the adjusting column is in threaded connection with the shell.
5. The upper differential knob adjustment mechanism according to claim 1, characterized in that: and the adjusting crank is provided with a limiting pin for limiting the swinging range of the adjusting crank.
6. The upper differential knob adjustment mechanism according to claim 1, characterized in that: the pre-tightening assembly is used for pre-tightening the adjusting column in the sewing machine shell.
7. The upper differential knob adjustment mechanism according to claim 6, wherein: the pre-tightening assembly comprises a pre-tightening spring, one end of the pre-tightening spring is connected with a locking piece which locks the adjusting column and the shell of the sewing machine, and the other end of the pre-tightening spring abuts against the inside of a groove in the shell of the sewing machine.
8. The upper differential knob adjustment mechanism according to claim 1, characterized in that: the sewing machine is characterized in that a scale plate is arranged on the shell of the sewing machine, and an indicating part matched with the scale plate is arranged on the knob.
9. A sewing machine characterized by: the sewing machine has an upper differential knob adjusting mechanism as set forth in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921126205.9U CN210420452U (en) | 2019-07-17 | 2019-07-17 | Upper differential knob adjusting mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921126205.9U CN210420452U (en) | 2019-07-17 | 2019-07-17 | Upper differential knob adjusting mechanism and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210420452U true CN210420452U (en) | 2020-04-28 |
Family
ID=70381399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921126205.9U Active CN210420452U (en) | 2019-07-17 | 2019-07-17 | Upper differential knob adjusting mechanism and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210420452U (en) |
-
2019
- 2019-07-17 CN CN201921126205.9U patent/CN210420452U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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| CP03 | Change of name, title or address |