CN213708701U - Upper differential adjusting device of sewing machine - Google Patents
Upper differential adjusting device of sewing machine Download PDFInfo
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- CN213708701U CN213708701U CN202022482399.5U CN202022482399U CN213708701U CN 213708701 U CN213708701 U CN 213708701U CN 202022482399 U CN202022482399 U CN 202022482399U CN 213708701 U CN213708701 U CN 213708701U
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Abstract
The utility model provides a last differential adjusting device of sewing machine belongs to sewing machine technical field. The problem of how to enable the differential adjusting shaft to rotate and adjust more easily is solved. The utility model provides a sewing machine goes up differential adjusting device, sewing machine includes the casing, be provided with differential regulating spindle on the casing, this differential adjusting device includes differential regulating plate, differential regulating plate links firmly with differential regulating spindle one end, differential regulating plate is perpendicular setting and differential regulating plate's operation end with differential regulating spindle and wears out the casing, the operation of differential regulating plate is served and is had the board of grabbing of outside bending type one-tenth, be connected with the adjustment sheet on the casing, sliding connection has adjust knob on the adjustment sheet, adjust knob and differential regulating plate pass through threaded connection and can be near differential regulating plate and adjustment sheet mutually. The upper differential adjusting device of the sewing machine enables the sewing machine to be adjusted more easily.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, a last differential adjusting device of sewing machine is related to.
Background
The sewing machine is used for sewing fabrics, leather and the like, and the front and back amount of the reciprocating motion of the upper feed dog of the sewing machine is generally required to be adjusted according to the sewing requirement of the sewing machine in the using process of the sewing machine.
The front-back reciprocating transmission mechanism of the upper feed dog of the existing sewing machine generally comprises an upper feed rack driving shaft, an upper feed driving shaft and a differential adjusting shaft, wherein an adjusting shifting fork is fixed on the differential adjusting shaft, a first sliding part is connected in the adjusting shifting fork in a sliding manner, an arc-shaped guide groove is fixed on the upper feed driving shaft, a second sliding part is connected in the arc-shaped guide groove in a sliding manner, the first sliding part is connected with the second sliding part through a pin shaft, and the pin shaft is connected with the upper feed rack driving shaft through a connecting rod. The upper feeding driving shaft is driven by a sewing machine main shaft through a crank connecting rod to drive the arc-shaped guide groove to circumferentially swing back and forth, and then under the sliding action of the first sliding piece and the second sliding piece, the pin shaft drives the upper cloth feeding frame driving shaft to rotate back and forth through the connecting rod, so that the back and forth reciprocating motion of the upper feeding tooth is realized. The differential adjusting shaft is rotated to drive the adjusting shifting fork to rotate, so that the sliding stroke of the first sliding part can be expanded or reduced, and the adjustment of the front and rear amount of the upper feeding teeth is realized.
The existing adjusting device for rotating the differential adjusting shaft is simple in structure, is usually connected with the differential adjusting shaft through an adjusting rod, adjusts the rotation of the differential adjusting shaft through the adjusting rod, is usually provided with only one force application part for holding by one hand on the existing adjusting rod, and realizes the force application of the rotation of the differential adjusting shaft by holding the force application part with one hand and adjusting the adjusting rod.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned problem that prior art exists, provide a last differential adjusting device of sewing machine, the utility model aims to solve the technical problem that: how to make the differential adjusting shaft more easily rotate and adjust.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a sewing machine goes up differential adjusting device, sewing machine includes the casing, be provided with differential regulating spindle on the casing, this differential adjusting device includes differential regulating plate, differential regulating plate links firmly with differential regulating spindle one end, differential regulating plate is perpendicular setting and differential regulating plate's operation end with differential regulating spindle and wears out the casing, the operation of differential regulating plate is served and is had the board of grabbing of outside bending type one-tenth, be connected with the adjustment sheet on the casing, sliding connection has adjust knob on the adjustment sheet, adjust knob and differential regulating plate pass through threaded connection and can be near differential regulating plate and adjustment sheet mutually.
The adjusting knob is adjusted to be in threaded connection with the differential adjusting plate, the differential adjusting plate and the adjusting sheet are loosened, the grabbing plate is held by one hand, the adjusting knob is held by the other hand to slide on the adjusting sheet, the adjusting knob drives the differential adjusting plate to move, a differential adjusting shaft connected with the differential adjusting plate is rotated, adjustment of the front and rear quantity of the upper feeding teeth of the differential adjusting shaft is achieved, after adjustment is completed, the adjusting knob is adjusted to be in threaded connection with the differential adjusting plate again, the differential adjusting plate abuts against the adjusting sheet, the differential adjusting plate can be driven to rotate by the movement of the differential adjusting plate when small force is applied by two hands, adjustment is easier, the differential adjusting plate and the differential adjusting shaft are arranged vertically, the force capable of rotating the differential adjusting shaft is small, and the operating end of the differential adjusting plate penetrates out of the shell, and operation is convenient.
In the above-mentioned differential adjusting device on the sewing machine, one end of the differential adjusting shaft is provided with a connecting column, the outer side surface of the connecting column is provided with a clamping groove penetrating through the connecting column, and one end of the differential adjusting plate is clamped in the clamping groove and fixedly connected with the connecting column through a screw. The connecting column enables the differential adjusting plate to be conveniently connected with the differential adjusting shaft, the clamping groove facilitates the connection of the differential adjusting plate, the contact surface between the differential adjusting plate and the connecting column is large, the connection is firm, and the adjusting plate is more labor-saving in adjusting the differential adjusting shaft.
In the above differential adjusting device of the sewing machine, the adjusting sheet is opposite to the differential adjusting plate, the adjusting sheet is provided with an arc-shaped chute horizontally arranged in the length direction, and one end of the adjusting knob passes through the arc-shaped chute and is connected with the differential adjusting plate. The arc-shaped sliding groove enables the rotating tracks of the differential adjusting plate around the differential adjusting shaft to be consistent, and the adjustment is smoother.
In the above differential adjusting device for a sewing machine, the connecting end of the adjusting knob has a threaded post, the differential adjusting plate has a threaded hole, and the threaded post is in threaded connection with the threaded hole. The threaded column is in threaded connection with the threaded hole, the differential adjusting plate can be abutted against or loosened from the adjusting sheet through the threaded connection position, and the position of the differential adjusting plate is fixed or loosened for adjustment.
In the above differential adjusting device of the sewing machine, the adjusting piece is provided with two connecting plates which are bent outwards, and the two connecting plates are respectively fixed on the top of the machine shell through screws.
In the above differential adjusting device of the sewing machine, the differential adjusting shaft penetrates through the end of the machine shell and is provided with the torsion spring in a penetrating way, the machine shell is provided with the mounting hole, and one end of the torsion spring is arranged in the mounting hole. The torsion spring has smaller adjusting resistance, so that the adjusting hand feeling is better, and the adjusting precision is improved.
In the above differential adjusting device of the sewing machine, a scale matched with the arc chute is arranged on one edge of the adjusting sheet. The actual adjustment amount can be observed according to the scales, so that the differential adjusting plate is close to the position of the corresponding scale on the corresponding adjusting sheet.
In the above-mentioned differential adjusting device on a sewing machine, the differential adjusting plate has a groove thereon, and the groove is located at the bent edge of the gripping plate. The groove enables the grabbing plate to be bent more easily, and the grabbing plate is convenient to bend.
Compared with the prior art, the utility model has the advantages as follows:
the grabbing plate is held by one hand, the adjusting knob is held by the other hand to slide on the adjusting plate, the adjusting knob drives the differential adjusting plate to move, the differential adjusting shaft connected with the differential adjusting plate rotates, the adjustment of the front and rear quantity of the upper feeding teeth by the differential adjusting shaft is realized, after the adjustment is finished, the threaded connection position of the adjusting knob and the differential adjusting plate is adjusted again, the differential adjusting plate is abutted against the adjusting plate, the differential adjusting plate can be driven to rotate by the movement of the differential adjusting plate by applying small force to the two hands through the operation of the two hands, and the adjustment is easier.
Drawings
FIG. 1 is a schematic view of a sewing machine;
FIG. 2 is a schematic view of the sewing machine in another orientation;
FIG. 3 is an exploded view of the sewing machine;
FIG. 4 is a schematic diagram of a differential adjustment plate;
fig. 5 is an enlarged view of a portion a of fig. 3.
In the figure, 1, a housing; 1a, a strip-shaped through hole; 1b, mounting holes; 2. a differential adjustment shaft; 2a, connecting columns; 2a1, card slot; 3. a differential adjustment plate; 3a, a threaded hole; 3b, a groove; 4. grabbing a plate; 5. a regulating sheet; 5a, an arc-shaped chute; 5b, a connecting plate; 6. adjusting a knob; 6a, a threaded column; 7. a torsion spring; 8. and (4) calibration.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-5, the utility model discloses a sewing machine goes up differential adjusting device, sewing machine includes casing 1, be provided with differential regulating shaft 2 on the casing 1, this differential adjusting device includes differential regulating plate 3, differential regulating shaft 2 one end has spliced pole 2a, spliced pole 2a lateral surface has a draw-in groove 2a1 that runs through spliced pole 2a, differential regulating plate 3 one end card is located in draw-in groove 2a1 and makes differential regulating plate 3 and spliced pole 2a link firmly through the screw, differential regulating shaft 2 wears to be equipped with torsional spring 7 on wearing out casing 1 end, casing 1 has mounting hole 1b, one end of torsional spring 7 sets up in mounting hole 1b, torsional spring 7 has a less regulation resistance, make the regulation smooth and easy, improve the regulation precision, casing 1 has rectangular shape through-hole 1a, the other end of differential regulating plate 3 passes rectangular shape through-hole 1a, differential regulating plate 3 is perpendicular setting and differential regulating plate 3's operation end wears out casing 1 with differential regulating shaft 2, has the board 4 of grabbing that outside bending type formed on differential regulating plate 3's the operation end, has recess 3b on the differential regulating plate 3, and recess 3b is located the board 4 edge of buckling of grabbing, and recess 3b makes the board 4 of grabbing buckle more light, is convenient for grab board 4 and buckles.
The shell 1 is connected with an adjusting sheet 5, the adjusting sheet 5 and the differential adjusting plate 3 are opposite to the adjusting sheet 5 and are provided with two connecting plates 5b which are formed by bending outwards, the two connecting plates 5b are respectively fixed at the top of the shell 1 through screws, the adjusting sheet 5 is provided with an arc-shaped chute 5a which is horizontally arranged in the length direction, the arc-shaped chute 5a enables the rotating tracks of the differential adjusting plate 3 around the differential adjusting shaft 2 to be consistent, the adjustment is smoother, one end of an adjusting knob 6 is provided with a threaded column 6a, the differential adjusting plate 3 is provided with a threaded hole 3a, one end of the adjusting knob 6 passes through the arc-shaped chute 5a to be in threaded connection with the differential adjusting plate 3 through the threaded column 6a and the threaded hole 3a, and the threaded, the differential adjusting plate 3 can be abutted against or loosened from the adjusting sheet 5 through the threaded connection position, so that the position of the differential adjusting plate 3 can be fixed or loosened for adjustment.
The edge of the adjusting sheet 5 is provided with a scale 8 matched with the arc chute 5a, and the actual adjusting amount can be observed according to the scale 8, so that the differential adjusting plate 3 is abutted against the position, corresponding to the scale 8, of the corresponding adjusting sheet 5.
Adjusting the connecting position of the threaded column 6a on the adjusting knob 6 and the threaded hole 3a to loosen the differential adjusting plate 3 and the adjusting sheet 5, grasping the grasping plate 4 with one hand, grasping the adjusting knob 6 with the other hand to slide the adjusting knob 6 on the arc-shaped chute 5a, the adjusting knob 6 driving the differential adjusting plate 3 to move, rotating the connecting column 2a connected with the differential adjusting plate 3, the connecting column 2a driving the differential adjusting shaft 2 to rotate, thereby realizing the adjustment of the front and rear amount of the upper feed screw by the differential adjusting shaft 2, after the adjustment is completed, adjusting the connecting position of the threaded column 6a on the adjusting knob 6 and the threaded hole 3a until the differential adjusting plate 3 and the adjusting sheet 5 abut against each other, and the operation of two hands can apply small force to enable the two hands to move the differential adjusting plate 3 to drive the differential adjusting shaft 2 to rotate, thereby enabling the adjustment to be easier.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. A sewing machine upper differential adjusting device comprises a machine shell (1), a differential adjusting shaft (2) is arranged on the machine shell (1), the differential adjusting device comprises a differential adjusting plate (3), the differential adjusting plate (3) is fixedly connected with one end of the differential adjusting shaft (2), it is characterized in that the differential adjusting plate (3) is perpendicular to the differential adjusting shaft (2) and the operating end of the differential adjusting plate (3) penetrates out of the shell (1), the operating end of the differential adjusting plate (3) is provided with a grabbing plate (4) which is bent outwards, the shell (1) is connected with an adjusting sheet (5), the adjusting sheet (5) is connected with an adjusting knob (6) in a sliding way, the adjusting knob (6) is in threaded connection with the differential adjusting plate (3) and can enable the differential adjusting plate (3) to be abutted against the adjusting sheet (5).
2. The sewing machine upper differential adjusting device according to claim 1, characterized in that the end of the differential adjusting shaft (2) penetrating out of the machine shell (1) is provided with a connecting column (2a), the outer side surface of the connecting column (2a) is provided with a clamping groove (2a1) penetrating through the connecting column (2a), one end of the differential adjusting plate (3) is clamped in the clamping groove (2a1) and the differential adjusting plate (3) is fixedly connected with the connecting column (2a) through a screw.
3. The sewing machine upper differential adjusting device according to claim 1 or 2, characterized in that the adjusting sheet (5) is opposite to the differential adjusting plate (3), the adjusting sheet (5) is provided with an arc-shaped sliding groove (5a) horizontally arranged in the length direction, and one end of the adjusting knob (6) passes through the arc-shaped sliding groove (5a) to be connected with the differential adjusting plate (3).
4. Differential adjustment device on sewing machines according to claim 3, characterized in that the connecting end of the adjustment knob (6) has a threaded post (6a), the differential adjustment plate (3) has a threaded hole (3a), the threaded post (6a) is in threaded connection with the threaded hole (3 a).
5. The sewing machine upper differential adjusting device according to claim 3, characterized in that the adjusting sheet (5) is provided with two connecting plates (5b) which are bent outwards, and the two connecting plates (5b) are respectively fixed on the top of the machine shell (1) through screws.
6. The sewing machine upper differential adjusting device according to claim 1 or 2, characterized in that the end of the differential adjusting shaft (2) penetrating out of the machine shell (1) is provided with a torsion spring (7), the machine shell (1) is provided with a mounting hole (1b), and one end of the torsion spring (7) is arranged in the mounting hole (1 b).
7. Differential adjustment device on a sewing machine according to claim 1 or 2, characterized in that the adjustment flap (5) is provided with a scale (8) on one edge adapted to the curved sliding groove (5 a).
8. Differential adjustment device on sewing machines according to claim 1 or 2, characterized in that the differential adjustment plate (3) has a groove (3b) on it, the groove (3b) being located at the bent edge of the grip plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022482399.5U CN213708701U (en) | 2020-10-31 | 2020-10-31 | Upper differential adjusting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022482399.5U CN213708701U (en) | 2020-10-31 | 2020-10-31 | Upper differential adjusting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213708701U true CN213708701U (en) | 2021-07-16 |
Family
ID=76801967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022482399.5U Active CN213708701U (en) | 2020-10-31 | 2020-10-31 | Upper differential adjusting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213708701U (en) |
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2020
- 2020-10-31 CN CN202022482399.5U patent/CN213708701U/en active Active
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