CN106192229B - Presser foot height adjusting device of sewing machine - Google Patents
Presser foot height adjusting device of sewing machine Download PDFInfo
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- CN106192229B CN106192229B CN201610850296.5A CN201610850296A CN106192229B CN 106192229 B CN106192229 B CN 106192229B CN 201610850296 A CN201610850296 A CN 201610850296A CN 106192229 B CN106192229 B CN 106192229B
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- presser foot
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a device for adjusting the height of a presser foot of a sewing machine, and belongs to the technical field of machinery. It has solved the current device of adjusting presser foot height and has adjusted more troublesome problem. It is including all setting up the regulation pole in the fuselage, the connecting pin, connecting rod one, connecting rod two and the elastic component with connecting rod one parallel arrangement, the one end of connecting rod one and the one end of connecting rod two cup joint respectively on the connecting pin, convex spacing portion has on the other end of connecting rod one, the outer end of adjusting the pole stretches out outside the fuselage, the inner of adjusting the pole has the regulating block, the regulating block is located connecting rod one and has the below of spacing portion one end, the driving medium includes the eccentric setting in the epaxial transmission cover of upper shaft, the transfer line and with be fixed in the epaxial transmission piece of transmission, the one end of wearing to be equipped with pivot and transfer line on the transmission cover is fixed mutually with the pivot, the other end and the transmission piece of transfer line are fixed mutually, connecting rod two cup joints mutually with the pivot with the other end that the connecting pin cup jointed mutually. It has the advantages of more convenient adjustment, time saving, labor saving and the like.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to an adjusting device of a sewing machine, in particular to a device for adjusting the height of a presser foot of the sewing machine.
Background
At present, in order to prevent interference in sewing caused by the fact that cloth material rises together with a needle due to friction with the needle, a presser foot assembly is arranged on each industrial sewing machine, when a needle rod leaves the cloth material to rise, the cloth material is pressed downwards by the presser foot assembly, the cloth material is prevented from being lifted upwards by the sewing needle, and after the sewing needle completely leaves the cloth material to rise, the presser foot assembly rises together with the needle rod. The lifting height of the presser foot assembly in the early industrial sewing machine is a fixed value and cannot be adjusted, but along with the continuous improvement of the technology of the industrial sewing machine, the adjustability of the lifting height of the presser foot assembly is also required.
In order to solve the above problems, chinese patent has proposed a sewing machine [ application No.: 200710148211.X ], when the presser foot is lifted, an eccentric cam on a main shaft drives a ring-shaped component to move back and forth and drives a rod component to swing back and forth by taking the rotating shaft as a fulcrum through the rotation of the main shaft, and finally the rotating shaft is rotated to drive the presser foot to lift or press down, so that the lifting height of the presser foot in the sewing machine is determined by the swinging amplitude of the rod component. In order to realize the adjustment of the lifting height of the presser foot, the rod member is provided with an arc hole in an arc shape, the front end of the annular member is connected with the arc hole through a pin, when the lifting height of the presser foot is adjusted, the pin slides along the arc hole to change the connecting position of the front end of the annular member and the arc hole, and the swinging amplitude of the rod member is determined by the position of the front end of the annular member on the rod member, so that the lifting height of the presser foot is changed after the connecting position of the front end of the annular member and the arc hole is changed.
Although this sewing machine allows the presser foot lift height to be adjusted, it has some disadvantages: the presser foot lifting height is adjusted by changing the connecting position of the front end of the annular member and the arc hole by sliding the pin along the arc hole, but the annular member is arranged in the shell of the sewing machine, the whole shell of the sewing machine needs to be removed firstly to adjust, and simultaneously, in order to ensure the stability of the presser foot lifting process, the pin is definitely locked relatively in the normal swinging process of the rod member, so when adjusting, the shell of the sewing machine needs to be removed firstly, the pin also needs to be loosened, and then the pin is controlled by a user to move along the arc hole to adjust, so that the adjustment of the lifting height of the whole presser foot is very complicated and laborious, and a large amount of time can be spent on the user to remove and reinstall the shell of the sewing machine.
Disclosure of Invention
The invention aims to provide a presser foot height adjusting device of a sewing machine aiming at the problems in the prior art, and the technical problem to be solved is how to more conveniently adjust the lifting height of a presser foot.
The purpose of the invention can be realized by the following technical scheme:
a presser foot height adjusting device of a sewing machine is characterized in that the presser foot height adjusting device comprises an adjusting rod, a connecting pin, a first connecting rod, a second connecting rod and an elastic piece, wherein the adjusting rod, the connecting pin, the first connecting rod, the second connecting rod and the elastic piece are all arranged in the machine body, one end of the first connecting rod and one end of the second connecting rod are respectively sleeved on the connecting pin, a convex limiting part is arranged at the other end of the first connecting rod, the outer end of the adjusting rod extends out of the machine body, an adjusting block which is eccentrically arranged relative to the axis of the adjusting rod is arranged at the inner end of the adjusting rod, and the adjusting block is positioned below one end of the first connecting rod, which is provided with the limiting part, the elastic piece acts on the first connecting rod and enables the limiting portion to have a trend of acting on the outer side face of the adjusting block all the time, the transmission piece comprises a transmission sleeve eccentrically arranged on the upper shaft, a transmission rod and a transmission block fixed on the transmission shaft, a pivot is arranged on the transmission sleeve in a penetrating mode, one end of the transmission rod is fixed with the pivot, the other end of the transmission rod is fixed with the transmission block, and the other end, connected with the connecting pin in a sleeved mode, of the second connecting rod is connected with the pivot in a sleeved mode.
When the presser foot component works normally, the upper shaft is driven to rotate by the motor arranged in the machine body of the machine shell, and the transmission sleeve is eccentrically arranged on the upper shaft, so that the first connecting rod is kept static in the state, when the upper shaft rotates, the transmission sleeve is driven to swing forwards or backwards, and the pivot moves forwards or backwards by taking the connecting pin as a fulcrum. Because one end of the transmission rod is fixed with the pivot, the transmission rod can move forwards or backwards along with the pivot, the other end of the transmission rod is fixed with the transmission block, and the transmission block is fixed with one end of the transmission shaft, so that the transmission block can swing forwards or backwards by taking the transmission shaft as a fulcrum, and finally the transmission shaft is driven to transmit, and the transmission shaft can drive the presser foot assembly to lift or descend through the transmission mechanism.
When the device for adjusting the height of the presser foot is used for adjusting the lifting height of the presser foot, the upper shaft stops rotating. The user rotates the outer end of the adjusting rod, the inner end of the adjusting rod is provided with the adjusting block which is eccentrically arranged relative to the axis of the adjusting rod, the outer side surface of the adjusting block is separated from the limiting part on the first connecting rod, thus the blocking effect of the adjusting block is lost, the limiting part on the first connecting rod swings downwards under the action of the elastic piece by taking the positioning pin as a fulcrum, the other end of the first connecting rod swings upwards, as the other end of the first connecting rod and one end of the second connecting rod are respectively sleeved on the connecting pin and the other end of the second connecting rod is fixed with the pivot, one end of the second connecting rod sleeved on the connecting pin swings upwards along with the other end of the first connecting rod sleeved with the positioning pin by taking the pivot as the fulcrum, thus the position of the connecting pin is changed, and as the lifting height of the presser foot component is determined by the moving distance of the pivot by taking the connecting pin as the fulcrum, therefore, when the position of the connecting pin is changed, the moving distance of the pivot taking the connecting pin as a fulcrum is also changed, so that the purpose of adjusting the lifting height of the presser foot assembly is achieved, and the lifting height of the presser foot assembly is changed when the upper shaft rotates again. The whole adjusting process can be realized only by rotating the outer end of the adjusting rod outside the machine shell by a user, the step that the adjusting can be carried out only by detaching the machine shell in the prior art is omitted, and the operation is very convenient, time-saving and labor-saving.
In the presser foot height adjusting device of the sewing machine, the outer side surface of the adjusting block is an arc-shaped surface.
The outer side surface of the adjusting block is set to be the arc-shaped surface, and the position change on the arc-shaped surface is obvious, so that when a user rotates the outer end of the adjusting rod from the outside of the machine body of the machine shell, the outer side surface of the adjusting block can be separated from the limiting part on the first connecting rod at once, the position of the connecting pin can be changed smoothly, and the purpose of conveniently adjusting the lifting height of the presser foot assembly is achieved.
In the presser foot height adjusting device of the sewing machine, the outer end of the adjusting rod is connected with the adjusting wheel, and the surface of the adjusting wheel is provided with scale marks along the circumferential direction.
The outer end of the adjusting rod extends out of the machine body of the sewing machine shell, the outer end of the adjusting rod is connected with the adjusting wheel, the adjusting rod can be conveniently driven to rotate directly by rotating the adjusting wheel outside the machine body of the machine shell, so that the adjusting block on the adjusting rod can be matched with the limiting head to finally realize position change of the positioning pin, and the lifting height of the presser foot assembly can be adjusted.
In addition, scale marks are arranged on the surface of the adjusting wheel along the circumferential direction, so that a user can clearly master the adjusting amount, and the lifting height of the presser foot is adjusted more accurately.
In the presser foot height adjusting device of the sewing machine, the machine body of the machine shell is internally provided with the positioning pin parallel to the upper shaft, one end of the first connecting rod with the limiting part is sleeved on the positioning pin, one side of one end of the first connecting rod, which is sleeved with the positioning pin, is provided with the sleeved part protruding in an annular shape, the elastic part is a torsion spring sleeved on the sleeved part, one end of the torsion spring acts on the side wall of the installation part, and the other end of the torsion spring acts on the other end of the first connecting rod, which is sleeved with the positioning pin, and enables the limiting part on the first connecting rod to always have the tendency of downwards swinging and contacting with the adjusting block.
The torsion spring is used as an elastic piece, the torsion spring is sleeved outside the sleeving part of the first connecting rod, one end of the torsion spring is enabled to act on the side wall of the installing part, the other end of the torsion spring acts on the other ends of the first connecting rod and the positioning pin, when a user rotates the adjusting rod outside the machine body of the sewing machine shell to enable the outer side face of the adjusting block to be far away from the lower side of the limiting head, the first connecting rod can rotate relative to the positioning pin and enables the limiting part to swing downwards under the action of torsion force of the torsion spring, in this way, the other end of the first connecting rod can swing upwards and drive one end of the second connecting rod to swing upwards together through the connecting pin, the position of the connecting pin is enabled to change, the position of the connecting pin determines the moving distance of the pivot taking the connecting pin as a fulcrum, and the purpose of conveniently adjusting the lifting height of the presser foot assembly is achieved.
In the presser foot height adjusting device of the sewing machine, the inner wall of the machine body of the machine shell of the sewing machine is provided with the mounting part protruding in a block shape, one end of the positioning pin is fixed in the mounting part, the other end of the positioning pin extends out of the mounting part, and one end of the first connecting rod is sleeved on the end of the positioning pin.
Because the locating pin is extra setting, be cubic convex installation department through extra setting on the fuselage inner wall of sewing machine's casing, the one end of locating pin is fixed in the installation department, the other end of locating pin stretches out outside the installation department to make the locating pin form the location in the fuselage of sewing machine's casing, so connecting rod one just can form the location in the fuselage of sewing machine's casing with connecting rod two just so, thereby just guarantee that this sewing machine's regulation presser foot high device can realize conveniently carrying out the function adjusted to the lifting height of presser foot subassembly.
In the above presser foot height adjusting device of sewing machine, as another technical solution, the elastic member is a spring connected in the machine body of the machine shell, one end of the spring is connected on the top inner wall of the machine body, and the other end of the spring acts on the upper side of the limiting part.
When a user rotates the adjusting rod outside the machine body of the sewing machine shell to enable the outer side face of the adjusting block to be far away from the lower side of the limiting head, the connecting rod rotates relative to the positioning pin under the action of the elastic force of the spring and enables the limiting portion to swing downwards, in this way, the other end of the connecting rod I swings upwards and drives one end of the connecting rod II to swing upwards together through the connecting pin, the position of the connecting pin changes, the moving distance of the pivot taking the connecting pin as a fulcrum is determined by the position of the connecting pin, and the elastic piece adopting the mode can achieve the purpose of conveniently adjusting the lifting height of the presser foot assembly.
In the presser foot height adjusting device of the sewing machine, the limiting part is provided with a screwing hole, the screwing hole is in threaded connection with a limiting head, and the outer side surface of the adjusting block abuts against the lower side of the limiting head.
Through threaded connection spacing head on spacing portion, the downside through the spacing head supports and leans on the lateral surface of regulating block, can make to form more stable cooperation between regulating block and the connecting rod one, can make the corresponding action change of connecting rod one smoothly when the user rotates the regulation pole.
In the presser foot height adjusting device of the sewing machine, a pressing rod penetrating from the right upper part of the machine body of the machine shell is further arranged in the machine body of the machine shell of the sewing machine, and the inner end of the pressing rod is propped against the upper side of the limiting head.
The inner end of the pressing rod penetrates into the machine body of the machine shell from the right above the machine body of the machine shell, the inner end of the pressing rod is abutted to the upper side of the limiting head, and meanwhile, the elastic action of the upper torsion spring is combined, so that the trend that the connecting rod rotates relative to the positioning pin and the lower side of the limiting head is firmly abutted to the outer side face of the adjusting block is guaranteed, and the lifting height of the presser foot assembly can be conveniently adjusted when a user rotates the adjusting rod.
In the presser foot height adjusting device of the sewing machine, the transmission sleeve is provided with a protruding connecting part, the connecting part is provided with a connecting groove, one end of the transmission rod is positioned in the connecting groove, the pivot passes through the connecting part and one end of the transmission rod, and the pivot and the transmission rod are fixed through a locking piece penetrating from one end of the transmission rod and abutting against the side part of the pivot.
Set up convex connecting portion on the transmission cover, set up the spread groove on the connecting portion, the one end of transfer line is located the spread groove, and the pivot passes the one end of connecting portion and transfer line to utilize the retaining member to form the pivot with the transfer line fixedly, can realize moving forward of transfer line through the cooperation of pivot and transfer line when the transmission cover swings, just also make the transmission shaft can rotate and drive the presser foot subassembly and promote.
Compared with the prior art, the presser foot height adjusting device of the sewing machine realizes the adjustment of the lifting height of the presser foot assembly only by rotating the adjusting rod from the outside of the machine body of the machine shell of the sewing machine through the connecting relation between the adjusting rod and the connecting rod I, the connecting relation between the connecting rod I and the connecting rod II, the connecting relation between the connecting rod II and the transmission rod and the connecting relation between the transmission rod and the transmission shaft, so that the adjustment of the lifting height of the presser foot assembly is more convenient, time and labor are saved, and the problem that the lifting height of the presser foot assembly can be adjusted only by detaching the machine body of the machine shell of the sewing machine in the prior art is well solved.
Drawings
Fig. 1 is a schematic view of the presser foot height adjusting device of the sewing machine when applied to the sewing machine.
Fig. 2 is a schematic view from another angle of fig. 1.
Fig. 3 is a schematic view of fig. 1 without the cabinet.
Fig. 4 is a schematic view from another angle of fig. 3.
Fig. 5 is a sectional view of the presser foot height adjusting device of the sewing machine applied to the sewing machine.
Fig. 6 is an exploded view of the presser foot height adjusting device of the present sewing machine.
Fig. 7 is an exploded view of the presser foot height adjusting device of the sewing machine at another angle.
FIG. 8 is a schematic view showing the connection between the adjusting rod and the first connecting rod in the presser foot height adjusting device of the present sewing machine.
FIG. 9 is a schematic structural view of an adjusting lever and a first connecting rod in the presser foot height adjusting device of the sewing machine.
In the figure, 1, a housing; 1a, a positioning part; 1b, an installation part; 2. a presser foot assembly; 3. an upper shaft; 4. a drive shaft; 5. a transmission mechanism; 6. a transmission member; 6a, a transmission sleeve; 6a1, connecting part; 6a2, connecting groove; 6b, a transmission rod; 6c, a transmission block; 7. a pivot; 8. a locking member; 9. adjusting a rod; 9a, a regulating block; 10. positioning pins; 11. a connecting pin; 12. a first connecting rod; 12a, a limiting part; 12b, a screw hole; 12c, a socket joint part; 13. a second connecting rod; 14. a limiting head; 15. an adjustment wheel; 15a, scale marking; 16. a torsion spring; 17. a compression bar.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, 2, 3 and 4, a presser foot height adjusting device for a sewing machine is provided, wherein a presser foot assembly 2 is arranged at a machine head of a machine shell 1 of the sewing machine, an upper shaft 3 is arranged in the machine body of the machine shell 1 of the sewing machine along an axial direction, a plurality of protruding positioning parts 1a are arranged at the outer side of the machine head of the machine shell 1 of the sewing machine, a rotatable transmission shaft 4 penetrates through the positioning parts 1a, and the transmission shaft 4 is arranged in parallel with the upper shaft 3. A transmission mechanism 5 is arranged between one end of the transmission shaft 4 and the presser foot component 2, and a transmission part 6 is arranged between the upper shaft 3 and the transmission shaft 4.
As shown in fig. 3, 4, 6 and 7, the transmission member 6 includes a transmission sleeve 6a and a transmission rod 6b, the transmission sleeve 6a is sleeved on the upper shaft 3, the transmission sleeve 6a is eccentrically disposed with respect to the upper shaft 3, the transmission sleeve 6a has a protruding connection portion 6a1, the connection portion 6a1 has a connection groove 6a2, one end of the transmission rod 6b is located in the connection groove 6a2, a pivot 7 passes through the end of the transmission rod 6b and the connection portion 6a1, and the pivot 7 and the transmission rod 6b are fixed by a locking member 8 penetrating through the end of the transmission rod 6b and abutting against the side of the pivot 7. The other end of the transmission shaft 4 is fixed with a transmission block 6c, and the other end of the transmission rod 6b extends out of the machine body of the machine shell 1 of the sewing machine and is fixed with the transmission block 6 c. In this embodiment, the locking member 8 may be a locking screw, a locking pin, or the like.
As shown in fig. 3, 4, 5, 6 and 7, the device for adjusting the height of the presser foot of the sewing machine comprises an adjusting rod 9, a positioning pin 10, a connecting pin 11, a first connecting rod 12, a second connecting rod 13 and an elastic piece, wherein the adjusting rod 9, the positioning pin 10, the connecting pin 11, the first connecting rod 12, the second connecting rod 13 and the elastic piece are arranged in the machine body of the machine shell 1 of the sewing machine, and the first connecting rod 12 and the second connecting rod 13 are arranged in parallel. The inner wall of the body of the shell 1 of the sewing machine is provided with a mounting part 1b which is in a block shape and protrudes, one end of a positioning pin 10 is fixed in the mounting part 1b, and the other end of the positioning pin 10 extends out of the mounting part 1 b. One end of the first connecting rod 12 is sleeved on the positioning pin 10, one end of the second connecting rod 13 is sleeved with the pivot 7, and one end of the first connecting rod 12 and the other end of the second connecting rod 13 are respectively sleeved on the connecting pin 11.
As shown in fig. 3, 4, 6 and 7, the end of the first connecting rod 12 that is sleeved with the positioning pin 10 has a protruding position-limiting portion 12a, the position-limiting portion 12a has a threaded hole 12b, and the threaded hole 12b is connected with a positioning head 14 through a thread. The inner of adjusting pole 9 penetrates the fuselage of sewing machine's casing 1 from the fuselage outside of sewing machine's casing 1 in, and has the regulating block 9a for adjusting the eccentric setting of pole 9's axis in the inner of adjusting pole 9, and regulating block 9a is located connecting rod 12 and the below that locating pin 10 cup jointed one end mutually, and the outside of regulating block 9a is the arcwall face, and the outer end of adjusting pole 9 is connected with regulating wheel 15, and the regulating wheel 15 is equipped with scale along circumference on the surface and marks 15 a.
As shown in fig. 8 and 9, one side of the end, which is in sleeve connection with the positioning pin 10, of the first connecting rod 12 is provided with a sleeve connection part 12c protruding in an annular shape, the positioning pin 10 penetrates through the sleeve connection part 12c, the elastic member is a torsion spring 16 sleeved on the sleeve connection part 12c, one end of the torsion spring 16 acts on the side wall of the installation part 1b, the other end of the torsion spring 16 acts on the other end, which is in sleeve connection with the positioning pin 10, of the first connecting rod 12, and the torsion force of the torsion spring 16 always has a tendency that the limiting part 12a on the first connecting rod 12 swings downwards and the lower side of the limiting head 14 abuts against the outer side surface of the adjusting block 9 a. In this embodiment, a presser bar 17 is further provided in the body of the housing 1 of the sewing machine so as to penetrate from the right above the body of the housing 1, and the inner end of the presser bar 17 abuts against the upper side of the stopper 14.
Instead of using the torsion spring 16 as the elastic member, a spring-acting elastic member may be selected, one end of which is connected to the top inner wall of the body of the housing 1 and the other end of which acts perpendicularly to the upper side of the stopper portion 12 a.
When the presser foot assembly 2 is in normal operation, the upper shaft 3 is driven to rotate by a motor arranged in the machine body of the machine shell 1 of the sewing machine, and since the transmission sleeve 6a is sleeved on the upper shaft 3 and is eccentrically arranged relative to the upper shaft 3, the first connecting rod 12 is kept static in the state, when the upper shaft 3 rotates, the connecting part 6a1 on the transmission sleeve 6a is driven to swing forwards or backwards, and the pivot 7 moves forwards or backwards by taking the connecting pin 11 as a fulcrum.
One end of the transmission rod 6b is fixed with the pivot 7, so that the transmission rod 6b moves forwards or backwards along with the pivot 7, the other end of the transmission rod 6b is fixed with the transmission block 6c, the transmission block 6c is fixed with one end of the transmission shaft 4, the transmission shaft 4 penetrates through the positioning parts 1a on the outer side of the machine head of the machine shell 1, the transmission block 6c swings forwards or backwards by taking the transmission shaft 4 as a fulcrum, the transmission shaft 4 is finally driven to transmit, and the transmission shaft 4 can drive the presser foot assembly 2 to lift or descend through the transmission mechanism 5.
When the lifting height of the presser foot is adjusted by the presser foot height adjusting device, the upper shaft 3 stops rotating. The user is through rotating the regulating wheel 15 that is located the fuselage outside of sewing machine's casing 1, because regulating wheel 15 fixes the outer end at regulation pole 9, the inner of regulation pole 9 has the regulating block 9a that sets up for the axis off-centre of regulation pole 9, the stopper 14 downside that connects on connecting rod one 12 supports and leans on the lateral surface of regulating block 9a under the torsional force effect of torsional spring 16, consequently rotate regulation pole 9 and can make the lateral surface of regulating block 9a and the downside phase separation of stopper 14, lost the regulating block 9a after to the restriction of stopper 14, the one end that connecting rod one 12 cup jointed with locating pin 10 can produce for locating pin 10 and rotate and make stopper 14 swing downwards, the other end of connecting rod one 12 produces upwards swing from this.
Because the other end of the first connecting rod 12 sleeved with the positioning pin 10 and one end of the second connecting rod 13 are both sleeved on the connecting pin 11, and the other end of the second connecting rod 13 is sleeved with the pivot 7, one end of the second connecting rod 13 sleeved on the connecting pin 11 swings upwards along with the other end of the first connecting rod 12 sleeved with the positioning pin 10 by taking the pivot 7 as a fulcrum, so that the position of the connecting pin 11 is changed, and because the lifting height of the presser foot assembly 2 is determined by the moving distance of the pivot 7 by taking the connecting pin 11 as the fulcrum, after the position of the connecting pin 11 is changed, the moving distance of the pivot 7 by taking the connecting pin 11 as the fulcrum is also changed, so that the lifting height of the presser foot assembly 2 is adjusted, and when the upper shaft 3 rotates again, the lifting height of the presser foot assembly 2 is changed.
The presser foot height adjusting device of the sewing machine realizes the adjustment of the lifting height of the presser foot assembly 2 only by rotating the adjusting rod 9 from the outside of the machine body of the machine shell 1 of the sewing machine through the connection relation between the adjusting rod 9 and the connecting rod one 12, the connection relation between the connecting rod one 12 and the connecting rod two 13, the connection relation between the connecting rod two 13 and the transmission rod 6b and the connection relation between the transmission rod 6b and the transmission shaft 4, so that the adjustment of the lifting height of the presser foot assembly becomes more convenient, time and labor are saved, and the problem that the lifting height of the presser foot assembly 2 can be adjusted only by detaching the machine body of the machine shell 1 of the sewing machine in the prior art is well solved. Furthermore, the scale marks 15a are arranged on the surface of the adjusting wheel 15 along the circumferential direction, so that a user can clearly master the adjustment amount of the lifting height of the presser foot assembly 2, and the lifting height of the presser foot assembly 2 can be accurately controlled.
The specific embodiments described herein are merely illustrative of the spirit of the invention. 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 invention as defined in the appended claims.
Claims (9)
1. A presser foot height adjusting device of a sewing machine is characterized in that one end of a first connecting rod (12) and one end of a second connecting rod (13) are respectively sleeved on the connecting pin (11), the other end of the first connecting rod (12) is sleeved on the positioning pin (10), the connecting rod I (12) is sleeved on the edge of one end of the positioning pin (10) and provided with a convex limiting part (12a), the outer end of the adjusting rod (9) extends out of the machine body, the inner end of the adjusting rod (9) is provided with an adjusting block (9a) which is eccentrically arranged relative to the axis of the adjusting rod (9), the adjusting block (9a) is positioned below one end of the connecting rod I (12) provided with the limiting part (12a), the elastic part acts on the connecting rod I (12) and enables the limiting part (12a) to always have a trend of acting on the outer side surface of the adjusting block (9a), the transmission part (6) comprises a transmission sleeve (6a) and a transmission rod (6b) which are eccentrically arranged on the upper shaft (3) and a transmission block (6c) which is fixed on the transmission shaft (4), a pivot (7) is arranged on the transmission sleeve (6a) in a penetrating manner, and one end of the transmission rod (6b) is fixed with the pivot (7), the other end of the transmission rod (6b) is fixed with the transmission block (6c), and the other end of the second connecting rod (13) which is sleeved with the connecting pin (11) is sleeved with the pivot (7).
2. The presser foot height adjusting device of a sewing machine according to claim 1, wherein an outer side surface of the adjusting block (9a) is an arc-shaped surface.
3. The presser foot height adjusting device of a sewing machine according to claim 1, wherein an adjusting wheel (15) is connected to an outer end of the adjusting rod (9), and a scale mark (15a) is provided on a surface of the adjusting wheel (15) along a circumferential direction.
4. The presser foot height adjusting device of a sewing machine according to claim 1, 2 or 3, characterized in that the inner wall of the machine body of the machine shell (1) of the sewing machine is provided with a mounting part (1b) protruding in a block shape, one end of the positioning pin (10) is fixed in the mounting part (1b), the other end of the positioning pin (10) extends out of the mounting part (1b) and one end of the first connecting rod (12) is sleeved on the end of the positioning pin (10).
5. The presser foot height adjusting device of a sewing machine according to claim 1, characterized in that one side of one end of the first connecting rod (12) sleeved with the positioning pin (10) is provided with a sleeved part (12c) protruding in a ring shape, the sleeved part (12c) is sleeved on the positioning pin (10), the elastic member is a torsion spring (16) sleeved on the sleeved part (12c), one end of the torsion spring (16) acts on the side wall of the mounting part (1b), and the other end of the torsion spring (16) acts on the other end of the first connecting rod (12) sleeved with the positioning pin (10) and enables the limiting part (12a) on the first connecting rod (12) to always have a tendency of contacting with the adjusting block (9a) in a downward swinging manner.
6. The presser foot height adjusting device of sewing machine according to claim 1, wherein the elastic member is a spring attached to the inside of the body of the housing (1), one end of the spring is attached to the top inner wall of the body, and the other end of the spring acts on the upper side of the stopper portion (12 a).
7. The presser foot height adjusting device of sewing machine according to claim 1, 2 or 3, characterized in that the stopper (12a) has a screw hole (12b), the screw hole (12b) is connected with a stopper head (14) through a screw thread, and the outer side surface of the adjusting block (9a) abuts against the lower side of the stopper head (14).
8. The presser foot height adjusting device of sewing machine according to claim 1, 2 or 3, characterized in that a presser bar (17) penetrating from the right above the body of the machine shell (1) is further provided in the body of the machine shell (1), and the inner end of the presser bar (17) is pressed against the upper side of the stopper (14).
9. The presser foot height adjusting device of a sewing machine according to claim 1, 2 or 3, wherein the driving sleeve (6a) has a protruding connecting portion (6a1), the connecting portion (6a1) has a connecting groove (6a2), one end of the driving rod (6b) is located in the connecting groove (6a2), the pivot (7) passes through the connecting portion (6a1) and one end of the driving rod (6b), and the pivot (7) and the driving rod (6b) are fixed by a locking member (8) penetrating from one end of the driving rod (6b) and abutting against the side of the pivot (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850296.5A CN106192229B (en) | 2016-09-26 | 2016-09-26 | Presser foot height adjusting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850296.5A CN106192229B (en) | 2016-09-26 | 2016-09-26 | Presser foot height adjusting device of sewing machine |
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| CN106192229A CN106192229A (en) | 2016-12-07 |
| CN106192229B true CN106192229B (en) | 2022-06-28 |
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| CN101929041A (en) * | 2009-06-25 | 2010-12-29 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Presser foot height adjusting mechanism for sewing machine |
| CN103352331A (en) * | 2013-08-07 | 2013-10-16 | 台州斯诺克电子科技有限公司 | Transmission device for sewing machine presser foot |
| JP5353338B2 (en) * | 2009-03-16 | 2013-11-27 | 株式会社鈴木製作所 | 1 thread lock sewing hand stitch sewing machine |
| CN104131420A (en) * | 2014-08-08 | 2014-11-05 | 上海富山精密机械科技有限公司 | Automatic variable presser foot mechanism of sewing machine |
| CN204644612U (en) * | 2015-04-27 | 2015-09-16 | 新通宇缝纫机股份有限公司 | A kind of height adjusting mechanism of presser foot of Sewing machines |
| CN204803528U (en) * | 2015-07-10 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot mechanism |
| CN206070129U (en) * | 2016-09-26 | 2017-04-05 | 浙江中捷缝纫科技有限公司 | A kind of regulation presser feet height devices of sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5353338B2 (en) * | 2009-03-16 | 2013-11-27 | 株式会社鈴木製作所 | 1 thread lock sewing hand stitch sewing machine |
| CN101929041A (en) * | 2009-06-25 | 2010-12-29 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Presser foot height adjusting mechanism for sewing machine |
| CN103352331A (en) * | 2013-08-07 | 2013-10-16 | 台州斯诺克电子科技有限公司 | Transmission device for sewing machine presser foot |
| CN104131420A (en) * | 2014-08-08 | 2014-11-05 | 上海富山精密机械科技有限公司 | Automatic variable presser foot mechanism of sewing machine |
| CN204644612U (en) * | 2015-04-27 | 2015-09-16 | 新通宇缝纫机股份有限公司 | A kind of height adjusting mechanism of presser foot of Sewing machines |
| CN204803528U (en) * | 2015-07-10 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot mechanism |
| CN206070129U (en) * | 2016-09-26 | 2017-04-05 | 浙江中捷缝纫科技有限公司 | A kind of regulation presser feet height devices of sewing machine |
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|---|---|
| CN106192229A (en) | 2016-12-07 |
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Effective date of registration: 20200927 Address after: 198 Xinggang East Road, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province Applicant after: ZOJE SEWING MACHINE Co.,Ltd. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Applicant before: ZOJE SEWING MACHINE Co.,Ltd. Applicant before: ZHEJIANG JOYEE SEWING MACHINE Co.,Ltd. Applicant before: ZHEJIANG BSM SEWING MACHINE Co.,Ltd. |
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Denomination of invention: A device for adjusting presser foot height of sewing machine Effective date of registration: 20221211 Granted publication date: 20220628 Pledgee: Bank of China Limited Yuhuan sub branch Pledgor: ZOJE SEWING MACHINE Co.,Ltd. Registration number: Y2022330003545 |
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