CN219637466U - Presser foot lifting device and sewing machine - Google Patents
Presser foot lifting device and sewing machine Download PDFInfo
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- CN219637466U CN219637466U CN202320342471.5U CN202320342471U CN219637466U CN 219637466 U CN219637466 U CN 219637466U CN 202320342471 U CN202320342471 U CN 202320342471U CN 219637466 U CN219637466 U CN 219637466U
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Abstract
The utility model relates to a presser foot lifting device and a sewing machine, wherein the presser foot lifting device comprises a driving motor, a first transmission mechanism, a transmission lever, a second transmission mechanism and a pressing rod, wherein the driving motor is in transmission connection with the first transmission mechanism; the presser foot lifting device can conveniently adjust the length of a transmission path between the driving motor and the presser foot, not only can adjust the position of the presser foot, but also can correct deviation caused by factors such as manufacturing errors, assembly errors, abrasion in the running process and the like, ensures that the sewing machine can accurately execute preset presser foot lifting/releasing actions, and is beneficial to realizing high-precision sewing work.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a presser foot lifting device and a sewing machine.
Background
Sewing machines are commonly used sewing devices that typically utilize one or more sewing threads to form one or more stitches on a material to interweave or stitch one or more layers of material; the sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastics, paper and the like, and the sewn stitch is neat, beautiful, flat and firm, has high sewing speed, is simple and convenient to use, and has wide application in the sewing industry.
The presser foot lifting device on the sewing machine is mainly used for lifting or putting down the presser foot, and in the running process, the sewing thread can be arranged on the cloth in a penetrating way through the lifting and the falling of the presser foot lifting device so as to realize sewing. The existing presser foot lifting device generally comprises a driving motor, a first transmission mechanism, a transmission lever, a connecting rod, a second transmission mechanism, a pressing rod (the pressing rod of the sewing machine is generally provided with a reset spring) and a presser foot connected to the lower end of the pressing rod, wherein the driving motor is in transmission connection with the first transmission mechanism, the first transmission mechanism is mainly used for converting rotary power output by the driving motor into linear power, the first transmission mechanism is in transmission connection with the transmission lever, the transmission lever is in transmission connection with one end of the connecting rod, the connecting rod is generally horizontally arranged or inclined at a certain angle, the transmission lever is mainly used for changing the direction of the linear power so as to convert the power transmitted by the first transmission mechanism into push/pull power for driving the connecting rod to move along the length direction of the connecting rod, the connecting rod can reciprocate along the length direction of the connecting rod under the action of the push/pull force, the other end of the connecting rod is in transmission connection with the second transmission mechanism, and the second transmission mechanism is mainly used for converting the reciprocating movement of the connecting rod into power for lifting/lowering along the vertical direction so as to drive the pressing rod to lift/lower the presser foot along the vertical direction, and accordingly the purpose of lifting or lowering the presser foot is achieved. In the prior art sewing machine, the first transmission mechanism and the second transmission mechanism have various embodiments, for example, a sewing machine thread loosening presser foot lifting and presser foot pressure adjusting device and sewing machine disclosed in Chinese patent CN 110983646B, a presser foot lifting device and sewing machine disclosed in Chinese patent CN111379083A, a sewing machine presser foot lifting structure and sewing machine disclosed in Chinese patent CN 107345341B, and the like, and have various structures.
In practice, due to manufacturing errors, assembly errors, abrasion in the running process and the like, deviation (such as initial height deviation) of the position of the presser foot in the existing presser foot lifting device is very easy to occur, and the deviation of the position of the presser foot can directly influence the pressure of the presser foot, the time of lifting/lowering action, the cooperation with other mechanisms in the sewing machine and the like, so that the sewing machine is not beneficial to accurately executing preset presser foot lifting/releasing action and is also not beneficial to realizing high-precision sewing work. However, the inconvenience of the existing presser foot lifting device is to adjust and correct the position of the presser foot, and the problem is to be solved.
Disclosure of Invention
The utility model provides a presser foot lifting device convenient for adjusting and correcting the position of a presser foot, which aims to solve the problems that the position of the presser foot in the existing presser foot lifting device is easy to deviate but is inconvenient to adjust and correct, and has the main conception that:
the presser foot lifting device comprises a driving motor, a first transmission mechanism, a transmission lever, a second transmission mechanism and a pressing rod, wherein the driving motor is in transmission connection with the first transmission mechanism, the second transmission mechanism is in transmission connection with the pressing rod, the lower end of the pressing rod is connected with a presser foot,
the device also comprises a length adjusting mechanism capable of adjusting the length, wherein the first transmission mechanism is in transmission connection with the transmission lever through the length adjusting mechanism, and/or the transmission lever is in transmission connection with the second transmission mechanism through the length adjusting mechanism. In the scheme, the length adjusting mechanism capable of adjusting the length is arranged in the presser foot lifting device, so that the length of a transmission path between the driving motor and the presser foot can be conveniently adjusted, the position of the presser foot can be adjusted and corrected, the sewing machine can accurately execute preset presser foot lifting/releasing actions, and high-precision sewing work is facilitated. The length adjusting mechanism is various in arrangement position, can be arranged between the first transmission mechanism and the transmission lever and between the transmission lever and the second transmission mechanism, can play a role in adjusting local length, and can effectively adjust and correct the position of the presser foot.
In order to solve the problem of adjusting the length of the length adjusting mechanism, preferably, the length adjusting mechanism comprises a connecting rod and a transmission member, and the connecting rod is in threaded connection with the transmission member. The connecting rod is connected with the transmission piece through threads, and the meshing length of the connecting rod and the transmission piece can be adjusted in a relative rotation mode, so that the length of the whole length adjusting mechanism can be effectively adjusted, and the purposes of adjusting and correcting the position of the presser foot are achieved.
Preferably, one end of the connecting rod is provided with an external thread, and one end of the transmission member is provided with a threaded hole which is matched with the external thread. So that the transmission piece and the connecting rod can be in threaded connection.
For ease of assembly, it is preferable that the other end of the link is configured with a connection hole and/or the other end of the transmission member is configured with a connection hole. So as to connect adjacent transmission parts by using the connecting holes.
In order to solve the problem of avoiding interference in the transmission process, further, a joint bearing is arranged in the connecting hole. Not only can realize rotatable connection, but also the connecting rod or the transmission piece has more degrees of freedom, is more flexible and convenient, and does not have the problem of motion interference.
In some embodiments, the first transmission mechanism is connected to a transmission member, the connecting rod is connected to a transmission lever, and the transmission member is in threaded connection with the connecting rod.
In some embodiments, one end of the connecting rod is connected to the second transmission mechanism, the other end is connected to the transmission member in a threaded manner, and the transmission member is connected to the transmission lever.
In some embodiments, the length adjusting mechanism includes two transmission members, where the two transmission members are respectively screwed on two ends of the connecting rod, and the two transmission members are respectively connected to the transmission lever and the second transmission mechanism, or the two transmission members are respectively connected to the first transmission mechanism and the transmission lever.
In order to solve the problem of being convenient for adjust the length adjustment mechanism length, further, the transmission piece detachable is connected in transmission lever, first drive mechanism or second drive mechanism, or, the connecting rod detachable is connected in transmission lever, first drive mechanism or second drive mechanism. So that the length adjusting mechanism can be detached from one side or two sides, the length of the length adjusting mechanism can be effectively adjusted, and the length adjusting mechanism can be reinstalled after the adjustment is finished, thereby being very convenient and efficient.
Preferably, the transmission member is connected to the transmission lever, the first transmission mechanism or the second transmission mechanism through a bolt pair, or the connecting rod is connected to the transmission lever, the first transmission mechanism or the second transmission mechanism through a bolt pair.
Further, the device also comprises a frame, the driving motor is arranged on the frame, the transmission lever comprises two transmission arms which form an included angle with each other, the transmission lever is rotatably connected to the frame, and the compression bar is vertically restrained on the frame in a movable mode.
A sewing machine comprises the presser foot lifting device.
Compared with the prior art, the presser foot lifting device and the sewing machine provided by the utility model can be used for conveniently adjusting the length of the transmission path between the driving motor and the presser foot, not only can adjust the position of the presser foot, but also can correct deviation caused by factors such as manufacturing errors, assembly errors, abrasion in the running process and the like, ensure that the sewing machine can accurately execute preset presser foot lifting/releasing actions, and are beneficial to realizing high-precision sewing work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a presser foot lifting device according to embodiment 1 of the present utility model.
Fig. 2 is a partial front view of fig. 1.
Fig. 3 is a schematic structural view of a transmission member in the presser foot lifting device provided in embodiment 1 of the present utility model.
Fig. 4 is a schematic structural view of a connecting rod in the presser foot lifting device provided in embodiment 1 of the present utility model.
Fig. 5 is a schematic structural diagram of a presser foot lifting device according to embodiment 2 of the present utility model.
Fig. 6 is a partial front view of fig. 5.
Fig. 7 is a partial schematic view of fig. 5.
Fig. 8 is a schematic structural diagram of a presser foot lifting device according to embodiment 2 of the present utility model.
Fig. 9 is a schematic structural diagram of a presser foot lifting device according to embodiment 3 of the present utility model.
Description of the drawings
Drive motor 101, first drive mechanism 102, drive rod 103, drive lever 104, connecting rod 105, second drive mechanism 106, pressure lever 107, roller 108, restraint 109
Length adjusting mechanism 200, connecting rod 201, transmission member 202, external thread 203, threaded hole 204, connecting hole 205, and knuckle bearing 206
Bolt pair 300.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
Example 1
In this embodiment, a presser foot lifting device is provided, which includes a frame, a driving motor 101, a first transmission mechanism 102, a transmission lever 104, a second transmission mechanism 106, and a pressing rod 107, wherein,
the frame mainly plays a supporting role, and when the device is implemented, the driving motor 101 can be fixedly arranged on the frame, an output shaft of the driving motor 101 is in transmission connection with the first transmission mechanism 102, and the first transmission mechanism 102 is mainly used for converting rotary power output by the driving motor 101 into linear power, in particular to linear power along the vertical direction. The first transmission 102 has various embodiments, and in practice, the first transmission 102 may be a combination of one or more of the existing transmission lever 103, cam mechanism, gear mechanism, link 201 mechanism, and the like.
The transmission lever 104 may be an existing lever, for example, a lever in chinese patent CN 110983646B, and specifically, in one embodiment, the transmission lever 104 includes two transmission arms that are angled with respect to each other, as shown in fig. 1 and 2, and the transmission lever 104 is rotatably connected to the frame, and has a degree of freedom of rotation with respect to the frame. In addition, in another embodiment, the transmission lever 104 includes two transmission arms with an included angle, and the included angle of the two transmission arms is adjustable, and the position of the presser foot can be adjusted by locking the bolt pair.
The pressing rod 107 is vertically restrained on the frame in a movable way, has the freedom degree of moving along the vertical direction, and the lower end of the pressing rod 107 is connected with a pressing foot; the second transmission mechanism 106 is in transmission connection with the pressing rod 107, so that the pressing rod 107 is driven by the second transmission mechanism 106 to lift/lower along the vertical direction, and the purpose of lifting or lowering the presser foot is achieved. In implementation, the second transmission mechanism 106 may be a transmission mechanism between the connecting rod 201 and the pressing rod 107 in the existing presser foot lifting device, for example, a transmission structure between the third connecting rod and the pressing rod in chinese patent CN111379083a may be adopted, or a transmission structure between the driving connecting rod and the pressing rod of the presser foot in chinese patent CN 110983646B may be adopted, which is not illustrated here.
The presser foot lifting device provided in this embodiment further includes a connecting rod 105, where the connecting rod 105 may be disposed horizontally or inclined to a certain angle in a horizontal direction, as shown in fig. 1 and fig. 2, two ends of the connecting rod 105 are respectively connected to one of the transmission arms of the transmission lever 104 and the second transmission mechanism 106, so as to play a role in transmission between the transmission lever 104 and the second transmission mechanism 106.
The presser foot lifting device provided by the embodiment further comprises a length adjusting mechanism 200 capable of adjusting the length, the first transmission mechanism 102 is in transmission connection with the other transmission arm of the transmission lever 104 through the length adjusting mechanism 200, as shown in fig. 1 and 2, the length adjusting mechanism 200 not only can play a role in transmitting power in the presser foot lifting device, but also can adjust the length of the presser foot lifting device, so that the length of a transmission path between the driving motor 101 and the presser foot can be conveniently adjusted, the position of the presser foot, such as the height of the presser foot, can be effectively adjusted and corrected, the preset presser foot lifting/releasing action of the sewing machine can be ensured to be accurately executed, and the high-precision sewing work can be realized.
In one implementation, the length adjustment mechanism 200 includes a link 201 and a transmission 202, wherein the link 201 is threadably coupled to the transmission 202. By connecting the connecting rod 201 with the transmission member 202 through threads, the meshing length of the connecting rod 201 and the transmission member 202 can be adjusted in a relative rotation mode, so that the length of the whole length adjusting mechanism 200 can be effectively adjusted, and the purposes of adjusting and correcting the position of the presser foot are achieved.
The length adjustment mechanism 200 has various embodiments, for example, one end of the connecting rod 201 is configured with an external thread 203, and one end of the transmission member 202 is configured with a threaded hole 204 adapted to the external thread 203, so that a threaded connection between the transmission member 202 and the connecting rod 201 can be achieved, as shown in fig. 2. For another example, one end of the connecting rod 201 is configured with a threaded hole 204, and one end of the transmission member 202 is configured with an external thread 203 adapted to the threaded hole 204, so that a threaded connection between the transmission member 202 and the connecting rod 201 is also possible.
In assembly, the first transmission mechanism 102 may be connected to the transmission member 202, for example, in this embodiment, the first transmission mechanism 102 is a cam mechanism, where the cam mechanism includes a cam in driving connection with an output shaft of the driving motor 101, a roller 108 adapted to the cam, and a constraint member 109, as shown in fig. 1, the roller 108 is mounted on the constraint member 109 and cooperates with the cam, one end of the constraint member 109 is movably connected to the frame, the other end is connected to the transmission member 202, the connecting rod 201 is connected to the transmission lever 104, and at the same time, the transmission member 202 is in threaded connection with the connecting rod 201, so that a space between the first transmission mechanism 102 and the transmission lever 104 can be adjusted according to practical situations through threaded connection. Of course, the same technical effect can be achieved by connecting the link 201 in the length adjustment mechanism 200 to the first transmission mechanism 102 and connecting the transmission member 202 in the length adjustment mechanism 200 to the transmission lever 104.
To facilitate assembly of the length adjustment mechanism 200, in one embodiment, one end of the link 201 is configured with a connection hole 205, as shown in fig. 4, to facilitate connection of the first transmission 102 or the transmission lever 104 using the connection hole 205. Meanwhile, in the preferred embodiment, the connecting rod 201 is detachably connected to the first transmission mechanism 102 or the transmission lever 104, for example, the connecting rod 201 may be connected to the first transmission mechanism 102 or the transmission lever 104 through the bolt pair 300, or may be connected to the first transmission mechanism 102 or the transmission lever 104 through a pin, a rivet, or the like. Similarly, one end of the transmission member 202 may be configured with a connection hole 205, as shown in fig. 3, which also plays a role in facilitating assembly; accordingly, the transmission member 202 may be detachably connected to the transmission lever 104 or the first transmission mechanism 102, for example, the transmission member 202 may be connected to the first transmission mechanism 102 or the transmission lever 104 through the bolt pair 300, or may be connected to the first transmission mechanism 102 or the transmission lever 104 through a pin, a rivet, or the like, so that the installation, the detachment, and the adjustment may be performed conveniently.
In order to avoid interference in the transmission process, in a more perfect scheme, a joint bearing 206 is further arranged in the connecting hole 205, as shown in fig. 3 or fig. 4, the joint bearing 206 is a spherical sliding bearing, the sliding contact surface of the joint bearing is an inner spherical surface and an outer spherical surface, the joint bearing 206 can rotate and swing at any angle during movement, and the joint bearing 206 has the characteristics of high load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, good lubrication and the like. By configuring the knuckle bearing 206, not only can rotatable connection be realized, but also the connecting rod 201 or the transmission member 202 has more degrees of freedom, is more flexible and convenient, and does not have the problem of motion interference. Specifically, as shown in fig. 3 or 4, the knuckle bearing 206 is fixed to the connection hole 205, and the connection hole 205 may be configured on the link 201 or on the transmission member 202; in actual assembly, the bolt pair 300 can be used to restrain the knuckle bearing 206 to the first drive mechanism 102 or the drive lever 104, which is very convenient. In practice, the length adjustment mechanism 200 may preferably employ a rod end bearing assembly, such as a PHS model rod end bearing assembly.
In one embodiment, the length adjustment mechanism 200 may include a connecting rod 201 and a transmission member 202, as shown in fig. 1 and 2, where the transmission member 202 is screwed to one end of the screw. In another embodiment, the length adjusting mechanism 200 may include a connecting rod 201 and two transmission members 202, where the two transmission members 202 are respectively screwed on two ends of the connecting rod 201, and the two transmission members 202 are respectively connected to the first transmission mechanism 102 or the transmission lever 104, so as to form two adjusting positions, which is beneficial to more convenient adjustment.
Example 2
In this embodiment, a presser foot lifting device is provided, which includes a frame, a driving motor 101, a first transmission mechanism 102, a transmission lever 104, a second transmission mechanism 106, and a pressing rod 107, wherein,
the frame mainly plays a supporting role, and when in implementation, the driving motor 101 can be fixedly arranged on the frame, an output shaft of the driving motor 101 is in transmission connection with the first transmission mechanism 102, and the first transmission mechanism 102 is mainly used for converting rotary power output by the driving motor 101 into linear power. The first transmission 102 has various embodiments, and in practice, the first transmission 102 may be a combination of one or more of the existing transmission lever 103, cam mechanism, gear mechanism, link 201 mechanism, and the like.
The transmission lever 104 may be an existing lever, for example, a lever in chinese patent CN 110983646B, and specifically, in one embodiment, the transmission lever 104 includes two transmission arms that are angled with respect to each other, and the transmission lever 104 is rotatably connected to the frame, with a degree of freedom of rotation with respect to the frame.
The pressing rod 107 is vertically restrained on the frame in a movable way, has the freedom degree of moving along the vertical direction, and the lower end of the pressing rod 107 is connected with a pressing foot; the second transmission mechanism 106 is in transmission connection with the pressing rod 107, so that the pressing rod 107 is driven by the second transmission mechanism 106 to lift/lower along the vertical direction, and the purpose of lifting or lowering the presser foot is achieved.
In the presser foot lifting device provided in this embodiment, the first transmission mechanism 102 may be directly connected to the transmission lever 104, or may be connected to the transmission lever 104 through the transmission rod 103, as shown in fig. 5 and 6, the transmission rod 103 may be vertically disposed and rotatably connected to the transmission lever 104, so that the transmission lever 104 is driven to rotate by using the first transmission mechanism 102, and thus the transmission direction of power can be changed by using the transmission lever 104.
The presser foot lifting device provided by the embodiment further comprises a length adjusting mechanism 200 capable of adjusting the length, the transmission lever 104 is connected with the second transmission mechanism 106 through the transmission of the length adjusting mechanism 200, the length adjusting mechanism 200 not only can play a role in transmitting power in the presser foot lifting device, but also can adjust the length of the presser foot lifting device, so that the length of a transmission path between the driving motor 101 and the presser foot can be conveniently adjusted, the position of the presser foot can be effectively adjusted and corrected, the sewing machine can accurately execute preset presser foot lifting/releasing actions, and high-precision sewing work is facilitated.
In one implementation, the length adjustment mechanism 200 includes a link 201 and a transmission 202, wherein the link 201 is threadably coupled to the transmission 202. By connecting the connecting rod 201 with the transmission member 202 through threads, the meshing length of the connecting rod 201 and the transmission member 202 can be adjusted in a relative rotation mode, so that the length of the whole length adjusting mechanism 200 can be effectively adjusted, and the purposes of adjusting and correcting the position of the presser foot are achieved.
The length adjustment mechanism 200 has various embodiments, for example, one end of the connecting rod 201 is configured with an external thread 203, and one end of the transmission member 202 is configured with a threaded hole 204 adapted to the external thread 203, so that a threaded connection between the transmission member 202 and the connecting rod 201 can be achieved, as shown in fig. 5 and 6. For another example, one end of the connecting rod 201 is configured with a threaded hole 204, and one end of the transmission member 202 is configured with an external thread 203 that is adapted to the threaded hole 204, so that a threaded connection between the transmission member 202 and the connecting rod 201 can also be achieved.
In assembly, the transmission lever 104 may be connected to the transmission member 202, the connecting rod 201 is connected to the second transmission mechanism 106, and at the same time, the transmission member 202 is screwed with the connecting rod 201, so that the distance between the transmission lever 104 and the second transmission mechanism 106 can be adjusted according to the actual situation through the screwed connection. Of course, the same technical effect can be achieved by connecting the link 201 in the length adjustment mechanism 200 to the transmission lever 104 and connecting the transmission member 202 in the length adjustment mechanism 200 to the second transmission mechanism 106.
To facilitate assembly of the length adjustment mechanism 200, in one embodiment, one end of the link 201 is configured with a connection hole 205 to facilitate connection of the second transmission mechanism 106 or the transmission lever 104 using the connection hole 205. Meanwhile, in the preferred embodiment, the connecting rod 201 is detachably connected to the second transmission mechanism 106 or the transmission lever 104, for example, the connecting rod 201 may be connected to the second transmission mechanism 106 or the transmission lever 104 through the bolt pair 300, or may be connected to the second transmission mechanism 106 or the transmission lever 104 through a pin, a rivet, or the like. Similarly, one end of the transmission member 202 may be configured with a connection hole 205, which also plays a role in facilitating assembly; accordingly, the transmission member 202 may be detachably connected to the transmission lever 104 or the second transmission mechanism 106, for example, the transmission member 202 may be connected to the second transmission mechanism 106 or the transmission lever 104 through the bolt pair 300, or may be connected to the second transmission mechanism 106 or the transmission lever 104 through a fastener such as a pin, a rivet, or the like, so that the installation, the detachment, and the adjustment may be performed conveniently.
In order to avoid interference in the transmission process, in a more perfect scheme, the joint bearing 206 is further disposed in the connecting hole 205, as shown in fig. 5 and 6, not only can rotatable connection be realized, but also the connecting rod 201 or the transmission member 202 has more degrees of freedom, and is more flexible and convenient, and no problem of motion interference exists. Specifically, as shown in fig. 5 and 6, the knuckle bearing 206 is fixed to the connection hole 205, and the connection hole 205 may be configured in the link 201 or in the transmission member 202; in actual assembly, bolt pair 300 may be used to constrain knuckle bearing 206 to either second drive mechanism 106 or drive lever 104, which is convenient.
In one embodiment, the length adjustment mechanism 200 may include a connecting rod 201 and a driving member 202, as shown in fig. 6 or 7, where the driving member 202 is screwed to one end of the screw. In another embodiment, the length adjusting mechanism 200 may include a connecting rod 201 and two transmission members 202, where the two transmission members 202 are respectively screwed on two ends of the connecting rod 201, as shown in fig. 8, and the two transmission members 202 are respectively connected to the transmission lever 104 and the second transmission mechanism 106, so as to form two adjusting positions, which is beneficial for more convenient adjustment.
In the present embodiment, the link 201 in the length adjustment mechanism 200 may be disposed horizontally or at an angle to the horizontal as shown in fig. 5 or 8, and the link 201 should have a suitable length in order to meet the transmission requirement, for example, the requirement of transmitting power from the rear end to the front end of the cantilever of the sewing machine.
Example 3
The main difference between the presser foot lifting device provided in this embodiment and the above embodiments 1 and 2 is that two sets of length adjusting mechanisms 200 are configured in the presser foot lifting device, as shown in fig. 9, the first transmission mechanism 102 is in transmission connection with the transmission lever 104 through one set of length adjusting mechanisms 200, so that the distance between the first transmission mechanism 102 and the transmission lever 104 is adjusted and corrected through the set of length adjusting mechanisms 200; the specific configuration of the length adjustment mechanism 200 is as shown in embodiment 1, and will not be described here again.
Meanwhile, the transmission lever 104 is in transmission connection with the second transmission mechanism 106 through another set of length adjustment mechanisms 200, as shown in fig. 9, so that the distance between the transmission lever 104 and the second transmission mechanism 106 is adjusted and corrected through the set of length adjustment mechanisms 200; the specific configuration of the length adjustment mechanism 200 is as shown in embodiment 2, and will not be described here again; by matching the two sets of length adjusting mechanisms 200, the position of the presser foot can be adjusted more conveniently and accurately.
Example 3
The embodiment provides a sewing machine, which comprises the presser foot lifting device. In practice, the frame may be a housing of the sewing machine or a stand provided in the housing of the sewing machine.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.
Claims (10)
1. The utility model provides a lift presser foot device, includes driving motor, first drive mechanism, transmission lever, second drive mechanism and depression bar, driving motor and first drive mechanism transmission are connected, and second drive mechanism is connected with the depression bar transmission, and the lower extreme of depression bar is connected with the presser foot, and its characterized in that still includes the length adjustment mechanism of adjustable length, and first drive mechanism passes through length adjustment mechanism transmission connection transmission lever, and/or transmission lever passes through length adjustment mechanism transmission connection second drive mechanism.
2. The presser foot lifting device of claim 1 wherein the length adjustment mechanism comprises a connecting rod and a transmission member, the connecting rod being threadably connected to the transmission member.
3. The presser foot lifting device as claimed in claim 2, wherein one end of the link is configured with an external thread, and one end of the transmission member is configured with a threaded hole adapted to the external thread.
4. A presser foot lifting device as claimed in claim 3, wherein the other end of the link is configured with a connecting hole and/or the other end of the transmission member is configured with a connecting hole.
5. The presser foot lifting device as claimed in claim 4, wherein a knuckle bearing is provided in the connection hole.
6. The presser foot lifting device as claimed in any one of claims 2 to 5, wherein said first transmission mechanism is connected to a transmission member, said link is connected to a transmission lever, and the transmission member is screwed with the link.
7. The presser foot lifting device as claimed in any one of claims 2 to 5, wherein one end of the link is connected to the second transmission mechanism, and the other end is screwed to the transmission member, and the transmission member is connected to the transmission lever.
8. The presser foot lifting device as claimed in any one of claims 2 to 5, wherein the length adjusting mechanism comprises two transmission members, the two transmission members are respectively screwed to two ends of the connecting rod, and the two transmission members are respectively connected to the transmission lever and the second transmission mechanism, or the two transmission members are respectively connected to the first transmission mechanism and the transmission lever.
9. The presser foot lifting device as claimed in any one of claims 2 to 5, wherein the transmission member is detachably connected to the transmission lever, the first transmission mechanism or the second transmission mechanism, or the link is detachably connected to the transmission lever, the first transmission mechanism or the second transmission mechanism;
and/or, still include the frame, driving motor install in the frame, the transmission lever includes two transmission arms that become the contained angle each other, and the rotatable connection of transmission lever is in the frame, the movable vertical constraint in the frame of depression bar.
10. A sewing machine comprising a presser foot lifting device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342471.5U CN219637466U (en) | 2023-02-28 | 2023-02-28 | Presser foot lifting device and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320342471.5U CN219637466U (en) | 2023-02-28 | 2023-02-28 | Presser foot lifting device and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219637466U true CN219637466U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320342471.5U Active CN219637466U (en) | 2023-02-28 | 2023-02-28 | Presser foot lifting device and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219637466U (en) |
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2023
- 2023-02-28 CN CN202320342471.5U patent/CN219637466U/en active Active
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