CN210657418U - Driving mechanism for swing seat of sewing machine - Google Patents
Driving mechanism for swing seat of sewing machine Download PDFInfo
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- CN210657418U CN210657418U CN201921274534.8U CN201921274534U CN210657418U CN 210657418 U CN210657418 U CN 210657418U CN 201921274534 U CN201921274534 U CN 201921274534U CN 210657418 U CN210657418 U CN 210657418U
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/14—Devices for changing speed or for reversing direction of rotation
- D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The utility model belongs to the technical field of sewing machines, in particular to a driving mechanism of a swing seat of a sewing machine; the sewing machine comprises a sewing machine shell, a driving motor, a driving crank, a connecting rod and a swinging seat, wherein a backstitch wrench hole is formed in the sewing machine shell, the aperture is 21.35mm-21.65mm, the driving motor is fixed on the sewing machine shell, a rotating shaft of the driving motor penetrates through the backstitch wrench hole to be connected with the driving crank, the driving crank is also connected with the swinging seat through the connecting rod, an oil sealing piece is arranged between the backstitch wrench hole and the rotating shaft of the driving motor to seal oil or/and an end face sealing piece is arranged between an end face, used for mounting the driving motor, of the sewing machine shell and a mounting end face of the driving motor to seal oil; the utility model discloses utilize the backstitch spanner hole that possesses on traditional aircraft nose, install driving motor's axis of rotation and be connected the action that realizes the gauge needle and adjust and the backstitch in the backstitch spanner hole and with gauge needle adjustment mechanism's swing seat, the suitability is strong, simple structure, improve for a short time, with low costs.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, refer in particular to a sewing machine swing seat actuating mechanism.
Background
At present, a swinging seat on a sewing machine is generally driven by a backstitch electromagnet, a backstitch wrench and a stitch gauge wheel disc on a mechanism, when the position of the swinging seat needs to be adjusted, the stitch gauge needs to be adjusted firstly, and then the backstitch wrench or the electromagnet drives the swinging seat through a crank, a connecting rod and the like so as to finally realize the adjustment of the stitch gauge. As disclosed in the patent application of the chinese utility model, an adjustable backstitch wrench assembly (application publication No. CN 104562474U, application publication No. 2015.04.29) drives the backstitch shaft to rotate and then realizes the backstitch or the movement of adjusting the needle pitch by manually pulling the backstitch wrench body of the backstitch wrench assembly. However, the driving mode of the backstitch wrench needs manual operation, so that the efficiency is low; the electromagnet driving mode only has two states of attraction and separation, which can not continuously adjust the needle pitch and generate larger noise and shake in the process. Therefore, some sewing machines adopt motors to replace electromagnets for backstitch. However, the existing methods have large changes to the machine shell, the installation position of the motor needs to be redesigned, and the cost is high. Therefore, the market urgently needs a driving mechanism of the swing seat of the sewing machine, which can realize the action of driving the swing seat by the motor and further realize the action of needle pitch adjustment or backstitch through simple transformation without redesigning a machine head.
The invention content is as follows:
the utility model aims to solve the technical problem that a sewing machine swing seat actuating mechanism is provided, need redesign aircraft nose structure among the solution prior art and redesign motor mounted position realize motor drive and realize that gauge needle adjusts the action and lead to problem with high costs.
The utility model discloses a realize like this:
the utility model provides a sewing machine swing seat actuating mechanism, includes sewing machine casing, driving motor, drive crank, connecting rod and swing seat, be equipped with backstitch wrench hole on the sewing machine casing, the aperture in backstitch wrench hole is 21.35mm-21.65mm, driving motor fixes on the sewing machine casing, and driving motor's axis of rotation passes backstitch wrench hole and is connected with drive crank, drive crank still is connected with swing seat through the connecting rod, be equipped with between backstitch wrench hole and driving motor's the axis of rotation and seal oil or/and be used for installing on the sewing machine casing and be provided with end face seal between driving motor's the terminal surface and the mounting end face and seal oil.
In the driving mechanism of the swing seat of the sewing machine, the oil sealing piece is a framework oil seal, the outer diameter of the framework oil seal is 21.35mm-21.65mm, the outer side wall of the framework oil seal is in sealing connection with the inner hole wall of the backstitch wrench hole, and the inner side wall of the framework oil seal is in sealing connection with the rotating shaft of the driving motor.
In above-mentioned sewing machine swing seat actuating mechanism, still be equipped with the axle sleeve between driving motor's the axis of rotation and the backstitch spanner hole, the axle sleeve sets up along the axial with the skeleton oil blanket, and the lateral wall of axle sleeve is connected with the interior pore wall tight fit of backstitch spanner hole, and driving motor's axis of rotation is worn to locate in the hole of axle sleeve.
In the sewing machine swing seat driving mechanism, a groove is formed in the inner hole wall of the backstitch wrench hole or the outer side wall of the shaft sleeve, the groove is an oil return groove, one end of the oil return groove is communicated with the end face, close to the shaft sleeve, of the framework oil seal, and the other end of the oil return groove is communicated with the inner cavity of the sewing machine shell.
In the sewing machine swing seat driving mechanism, a bearing is further arranged between the rotating shaft of the motor and the backstitch wrench hole, the inner ring of the bearing is tightly matched and connected with the rotating shaft of the driving motor, the outer ring of the bearing is tightly matched and connected with the backstitch wrench hole, and the bearing is located at the inner end of the backstitch wrench hole.
In the sewing machine swing seat driving mechanism, the oil sealing piece is a shaft sleeve and a framework oil seal or a shaft sleeve and an O-shaped ring, the outer side wall of the shaft sleeve is tightly matched and connected with the hole wall of the backstitch wrench hole, and the rotating shaft of the driving motor is hermetically connected with the inner hole wall of the shaft sleeve through the framework oil seal or the O-shaped ring.
In the driving mechanism of the swing seat of the sewing machine, an annular groove is arranged on the inner hole wall of the shaft sleeve at the rear side of the framework oil seal or the O-shaped ring, an oil return hole is arranged on the side wall of the shaft sleeve along the axial direction of the shaft sleeve, one end of the oil return hole is communicated with the annular groove, and the other end of the oil return hole is communicated with the inner cavity of the machine shell; or an oil return channel is arranged on the shaft sleeve at the rear side of the framework oil seal or the O-shaped ring along the radial direction of the shaft sleeve, an oil guide groove is arranged on the outer side wall of the shaft sleeve, and one end of the oil guide groove is communicated with the oil return channel and the other end of the oil guide groove is communicated with the inner cavity of the sewing machine shell.
In above-mentioned sewing machine swing seat actuating mechanism, the oil seal spare is axle sleeve and skeleton oil blanket, and the lateral wall of axle sleeve is connected with the pore wall tight fit in backstitch wrench hole, and driving motor's axis of rotation is worn to establish in the hole of axle sleeve, the rear end in backstitch wrench hole is reaming portion, and the skeleton oil blanket sets up in reaming portion, the lateral wall of skeleton oil blanket and the pore wall sealing connection of reaming portion, inside wall and driving motor's axis of rotation sealing connection.
In the driving mechanism of the swing seat of the sewing machine, an oil return hole is arranged in the machine shell, one end of the oil return hole is communicated with the end face, close to the shaft sleeve, of the framework oil seal, and the other end of the oil return hole is communicated with the inner cavity of the machine shell of the sewing machine.
In the sewing machine swing seat driving mechanism, the end face sealing piece and the mounting end face of the driving motor are separately arranged or the end face sealing piece and the mounting end face of the driving motor are in an integrated structure.
In the above sewing machine swing seat driving mechanism, the end face sealing member is a gasket or a sealing ring.
In the sewing machine swing seat driving mechanism, the aperture of the backstitch wrench hole is enlarged or reduced to be the same as the diameter of the rotating shaft of the driving motor, the rotating shaft of the driving motor is arranged in the backstitch wrench hole in a penetrating mode, a groove used for installing an oil sealing piece is formed in the inner hole wall of the backstitch wrench hole or the rotating shaft of the driving motor, and the oil sealing piece is arranged in the groove to seal the backstitch wrench hole and the rotating shaft of the driving motor.
In the above sewing machine swing seat driving mechanism, the oil seal member is a skeleton oil seal or an O-ring.
In the sewing machine swing seat driving mechanism, an oil return hole for returning oil on a rotating shaft of the driving motor to an inner cavity of the sewing machine shell is arranged in the sewing machine shell.
Compared with the prior art, the utility model outstanding advantage is:
1. the utility model discloses need not redesign aircraft nose structure, the backstitch wrench hole that possesses on utilizing traditional aircraft nose, install driving motor's axis of rotation in the backstitch wrench hole and be connected the action that realizes the gauge needle and adjust and the backstitch with gauge needle adjustment mechanism's swing seat, to sealing oil between backstitch wrench hole and driving motor's the axis of rotation, have multiple oil sealing mode, the suitability is strong, simple structure, improve for a short time, with low costs.
2. The utility model discloses a driving motor is step motor, and the precision is high, can adjust the gauge needle by oneself.
Description of the drawings:
fig. 1 is an exploded view of the first embodiment.
FIG. 2 is a schematic partial cross-sectional view of a first embodiment.
Fig. 3 is an enlarged schematic view of a portion a of fig. 2.
FIG. 4 is a schematic partial sectional view of a second embodiment.
FIG. 5 is a schematic partial sectional view of a third embodiment.
FIG. 6 is a schematic partial sectional view of a fourth embodiment.
Fig. 7 is an exploded view of the fifth embodiment.
FIG. 8 is a schematic partial sectional view of a fifth embodiment.
Fig. 9 is an enlarged schematic view of a portion B of fig. 8.
FIG. 10 is a schematic partial cross-sectional view of a sixth embodiment.
Fig. 11 is an enlarged schematic view of the portion C of fig. 10.
FIG. 12 is a schematic sectional view of the second embodiment.
Fig. 13 is an enlarged schematic view of a portion D of fig. 12.
FIG. 14 is a schematic partial sectional view of a seventh embodiment.
FIG. 15 is a schematic partial sectional view of an eighth embodiment.
FIG. 16 is a schematic, partially cross-sectional view of a face seal of the ninth embodiment in the form of a flat gasket.
Fig. 17 is an enlarged schematic view of a portion E of fig. 16.
FIG. 18 is a schematic, partially cross-sectional view of a face seal of the ninth embodiment in which the face seal is embedded.
Fig. 19 is an enlarged schematic view of portion F of fig. 18.
FIG. 20 is a schematic partial cross-sectional view of a seal ring as an end face seal in the ninth embodiment.
In the figure: 1. a sewing machine housing; 2. a drive motor; 3. a drive crank; 4. a connecting rod; 5. a swing seat; 6. Backstitch wrench holes; 7. a rotating shaft; 8. a pin shaft; 9. a clamp spring; 10. framework oil seal; 11. a shaft sleeve; 12. An O-shaped ring; 13. a bearing; 14. an annular groove; 15. an oil return hole; 16. an oil return passage; 17. an oil guide groove; 18. a gasket; 19. a seal ring; 20. an oil return groove.
The specific implementation mode is as follows:
the invention is further described below with reference to specific embodiments:
the first embodiment is as follows: referring to fig. 1-3:
the utility model provides a sewing machine swing seat actuating mechanism, includes sewing machine casing 1, driving motor 2, drive crank 3, connecting rod 4 and swing seat 5, swing seat 5 is the drive part of gauge needle regulation and backstitch mechanism, and gauge needle regulation and backstitch mechanism are conventional structure on the sewing machine, the utility model discloses do not do detailed description. The sewing machine shell 1 is provided with a backstitch wrench hole 6, the backstitch wrench hole 6 is used for installing a backstitch wrench on the sewing machine and is a characteristic of the flat sewing machine shell on the current market. The diameter of the backstitch wrench hole 6 is 21.35mm-21.65mm, the diameter of the hole is 21.5mm, but errors can exist in processing. The utility model discloses traditional backstitch spanner's structure has been cancelled. Based on backstitch spanner hole 6 that possesses on traditional sewing machine casing 1, the action that actuating mechanism realized sewing machine gauge needle regulation, backstitch is designed and is installed for backstitch, gauge needle are adjusted more accurately, fast, and stability is high, and need not redesign aircraft nose mechanism, and the commonality is good, and the improvement is little, and is with low costs. Driving motor 2 passes through the fastener to be fixed on sewing machine casing 1, and driving motor 2's axis of rotation 7 passes backstitch wrench hole 6 and is connected with drive crank 3, drive crank 3 still is connected with swing seat 5 through connecting rod 4, and connecting rod 4 and drive crank 3, swing seat 5 between be connected all realize through round pin axle 8 and jump ring 9. And an oil sealing piece is arranged between the backstitch wrench hole 6 and the rotating shaft 7 of the driving motor 2 for sealing oil.
The oil seal piece of this embodiment adopts skeleton oil blanket 10, and concrete structure is:
the outer diameter of the framework oil seal 10 is 21.35mm-21.65mm, and the outer diameter of the framework oil seal 10 is preferably 21.5 mm. The outer side wall of the framework oil seal 10 is hermetically connected with the inner hole wall of the backstitch wrench hole 6, and the inner side wall of the framework oil seal is hermetically connected with the rotating shaft 7 of the driving motor 2.
The present embodiment is an outer diameter size of the skeleton oil seal 10 designed according to a general size of the backstitch wrench hole 6, and an inner diameter of the skeleton oil seal 10 is designed according to the rotation shaft 7 of the driving motor 2.
For convenient control, the utility model discloses a step motor is preferred to driving motor 2.
The installation steps of this embodiment are:
firstly, the framework oil seal 10 is sleeved on the rotating shaft 7 of the driving motor 2, and then the pin shaft 8 is inserted into a hole of the driving crank 3 and is tightly supported by a screw. The upper end of the connecting rod 4 is sleeved into the pin shaft 8, the lower end of the connecting rod is sleeved into the corresponding pin on the swinging seat 5, and the clamp springs 9 are respectively clamped into the corresponding clamping grooves. Then, a rotating shaft 7 of a driving motor 2 with a framework oil seal 10 is inserted into the backstitch wrench hole 6 and then sleeved into the driving crank 3, and the driving motor is fixed to the corresponding position of the sewing machine shell 1 through screws. The driving motor 2 (stepping motor) is electrified to search the zero position of the rotating shaft 7, the position of the swinging seat 5 is adjusted to be at the zero position, the driving crank 3 is locked by a screw, and thus the driving motor 2 rotates clockwise or anticlockwise to drive the swinging seat 5 to swing up and down to realize the purpose of backward or forward sewing.
Example two: referring to fig. 4:
the embodiment is further designed on the basis of the structure of the first embodiment, and the specific structure is as follows:
still set up axle sleeve 11 between driving motor 2's axis of rotation 7 and backstitch spanner hole, axle sleeve 11 sets up along the axial with skeleton oil blanket 10, and the lateral wall of axle sleeve 11 is connected with the interior pore wall tight fit in backstitch spanner hole, and driving motor 2's axis of rotation 7 is worn to locate in the hole of axle sleeve 11. The shaft sleeve 11 can be made of cast iron, copper sleeve, plastic sleeve and the like.
Example three: referring to fig. 5:
the present embodiment is further designed based on the structure of the second embodiment, and the specific structure is as follows:
an oil return groove 12 is formed in the inner hole wall of the backstitch wrench hole or the outer side wall of the shaft sleeve 11, one end of the oil return groove 12 is communicated with the end face, close to the shaft sleeve 11, of the framework oil seal 10, and the other end of the oil return groove is communicated with the inner cavity of the sewing machine shell 1. The oil return groove 12 can make the lubricating oil on the rotating shaft 7 of the driving motor 2 flow back to the inner cavity of the sewing machine shell 1, and prevent the lubricating oil from leaking outside.
Example four: referring to fig. 6:
the embodiment is further designed on the basis of the structure of the first embodiment, and the specific structure is as follows:
still set up bearing 13 between driving motor 2's axis of rotation 7 and the backstitch spanner hole, the inner circle of bearing 13 is connected with driving motor 2's axis of rotation 7 close-fitting, and the outer lane of bearing 13 is connected with the interior pore wall close-fitting in backstitch spanner hole, bearing 13 is located the inner in the backstitch spanner hole, and bearing 13, skeleton oil blanket 10 set up along driving motor 2's axis of rotation 7 axial.
Example five: see fig. 7, 8, 9:
in this embodiment, the oil seal member is a shaft sleeve 11 and a skeleton oil seal or a shaft sleeve 11 and an O-ring 12, the outer side wall of the shaft sleeve 11 is tightly matched and connected with the hole wall of the backstitch wrench hole 6, and the rotating shaft 7 of the driving motor 2 is hermetically connected with the inner hole wall of the shaft sleeve 11 through the skeleton oil seal or the O-ring 12.
The installation steps of this embodiment are:
first, the O-ring 12 is fitted over the rotary shaft 7 of the drive motor 2, and then the pin 8 is inserted into the hole of the drive crank 3 and screwed tightly. The upper end of the connecting rod 4 is sleeved into the pin shaft 8, the lower end of the connecting rod is sleeved into the corresponding pin on the swinging seat 5, and the clamp springs 9 are respectively clamped into the corresponding clamping grooves. The shaft sleeve 11 is knocked into a corresponding position of a sewing machine shell 1, then the driving motor 2 matched with the O-shaped ring 12 is inserted into the sewing machine shell 1 through the shaft sleeve 11 and sleeved into the driving crank 3, the driving motor 2 is fixed to the corresponding position of the sewing machine shell 1 through screws, the driving motor 2 is electrified to find a zero position of a motor shaft, the position of the swinging seat 5 is adjusted to be the zero position, the driving crank 3 is locked through the screws, and therefore the driving motor 2 rotates clockwise or anticlockwise to drive the swinging seat 5 to swing up and down to achieve the purpose of reverse sewing or sequential sewing.
Example six: see fig. 10-13:
in this embodiment, an oil return structure is provided on the basis of the fifth embodiment:
an annular groove 14 (shown in fig. 10 and 11) is formed in the inner hole wall of the shaft sleeve 11 on the rear side of the framework oil seal or the O-ring 12, an oil return hole 15 is formed in the side wall of the shaft sleeve 11 along the axial direction of the shaft sleeve 11, one end of the oil return hole 15 is communicated with the annular groove 14, and the other end of the oil return hole 15 is communicated with the inner cavity of the sewing machine shell 1; or as shown in fig. 12 and 13, an oil return channel 16 is arranged on the shaft sleeve at the rear side of the framework oil seal or the O-ring 12 along the radial direction of the shaft sleeve 11, an oil guide groove 17 is arranged on the outer side wall of the shaft sleeve 11, one end of the oil guide groove 17 is communicated with the oil return channel 16, and the other end is communicated with the inner cavity of the sewing machine shell 1.
Example seven: referring to fig. 14:
the structure of this embodiment is substantially the same as that of the first embodiment, and the difference is that:
as shown in fig. 14, in this embodiment, the oil sealing member is a shaft sleeve 11 and a framework oil seal 10, the outer side wall of the shaft sleeve 11 is tightly fitted and connected with the hole wall of the backstitch wrench hole, the rotation shaft 7 of the driving motor 2 is arranged in the inner hole of the shaft sleeve 11 in a penetrating manner, the rear end of the backstitch wrench hole is a hole expanding portion, the framework oil seal 10 is arranged in the hole expanding portion, and the outer side wall of the framework oil seal 10 is connected with the hole wall of the hole expanding portion in a sealing manner, and the inner side wall is connected with the rotation shaft.
This embodiment still includes oil return structure:
an oil return hole 15 is formed in the sewing machine shell 1, one end of the oil return hole 15 is communicated with the end face, close to the shaft sleeve 11, of the framework oil seal 10, and the other end of the oil return hole is communicated with the inner cavity of the sewing machine shell 1.
Example eight: referring to fig. 15:
in the present embodiment, the hole diameter is enlarged or reduced at the original position of the backstitch wrench hole, so that the inner diameter of the backstitch wrench hole is the same as the diameter of the rotating shaft 7 of the driving motor 2. The axis of rotation 7 of driving motor 2 is worn to establish in the backstitch spanner hole, is provided with the recess that is used for installing the oil seal piece on the interior pore wall in backstitch spanner hole or on driving motor 2's the axis of rotation 7, and the oil seal piece setting is sealed oil to backstitch spanner hole and driving motor 2's axis of rotation 7 in the recess. The oil sealing part is a framework oil seal or an O-shaped ring 11.
This embodiment can also increase oil return structure:
an oil return hole 15 for returning oil on the rotating shaft 7 of the driving motor 2 to the inner cavity of the sewing machine shell 1 is arranged in the sewing machine shell 1.
Example nine: see fig. 16-20:
the present embodiment is different from the first to the ninth embodiments, and the structure for sealing oil is provided with the oil sealing member between the backstitch wrench hole and the rotating shaft 7 of the driving motor 2, and the end face sealing member is provided between the end face for mounting the driving motor 2 and the mounting end face of the driving motor 2 on the sewing machine housing 1 for sealing oil, and the specific structure is as follows:
the end face seal is arranged separately from the mounting end face of the driving motor 2 or the end face seal is integrated with the mounting end face of the driving motor 2 (as shown in fig. 16, 17, 18 and 19). The end face sealing element is a sealing gasket 18 or a sealing ring 19.
Wherein: the end face sealing element and the installation end face of the driving motor 2 are separately arranged and can be divided into a flat cushion type and an embedded type, for example, fig. 16 and 17 are flat cushion type, for example, fig. 18 and 19 are embedded type, the material of the sealing gasket 18 is more, and the rubber type, the saw dust pressing rubber type, the asbestos type and the like are mainly adopted in the industry at present. The specific operation is that the sealing gasket 18 is firstly placed at the corresponding position of the mounting end surface of the driving motor 2, and then the rotating shaft 7 of the driving motor 2 is placed into the sewing machine shell 1 through the backstitch wrench hole.
Example ten:
in the embodiment, an oil seal member is arranged between the backstitch wrench hole and the rotating shaft 7 of the driving motor 2 for sealing oil, and an end face seal member is arranged between the end face of the sewing machine shell 1 for mounting the driving motor 2 and the mounting end face of the driving motor 2 for sealing oil.
It is possible to combine the structure of embodiment ten with the structures of embodiments one to nine, respectively. The oil seal and face seal structure is used simultaneously as shown in the embodiment nine.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.
Claims (14)
1. A driving mechanism of a swing seat of a sewing machine comprises a sewing machine shell (1), a driving motor (2), a driving crank (3), a connecting rod (4) and a swing seat (5), the sewing machine shell (1) is provided with a backstitch wrench hole (6), the aperture of the backstitch wrench hole (6) is 21.35mm-21.65mm, it is characterized in that the driving motor (2) is fixed on the sewing machine shell (1), a rotating shaft (7) of the driving motor (2) passes through the backstitch wrench hole (6) to be connected with the driving crank (3), the driving crank (3) is also connected with a swinging seat (5) through a connecting rod (4), an oil sealing piece is arranged between the backstitch wrench hole (6) and the rotating shaft (7) of the driving motor (2) for sealing oil or/and an end face sealing piece is arranged between the end face of the sewing machine shell (1) used for installing the driving motor (2) and the installation end face of the driving motor (2) for sealing oil.
2. The driving mechanism of the oscillating seat of the sewing machine according to claim 1, wherein the oil sealing member is a framework oil seal (10), the outer diameter of the framework oil seal (10) is 21.35mm-21.65mm, the outer side wall of the framework oil seal (10) is in sealing connection with the inner hole wall of the backstitch wrench hole (6), and the inner side wall of the framework oil seal is in sealing connection with the rotating shaft (7) of the driving motor (2).
3. The driving mechanism of the oscillating seat of the sewing machine according to claim 2, characterized in that a shaft sleeve (11) is further arranged between the rotating shaft (7) of the driving motor (2) and the backstitch wrench hole (6), the shaft sleeve (11) and the framework oil seal (10) are axially arranged, the outer side wall of the shaft sleeve (11) is tightly matched and connected with the inner hole wall of the backstitch wrench hole (6), and the rotating shaft (7) of the driving motor (2) is arranged in the inner hole of the shaft sleeve (11) in a penetrating manner.
4. The driving mechanism of the oscillating seat of the sewing machine according to claim 3, characterized in that an oil return groove (20) is arranged on the inner hole wall of the backstitch wrench hole (6) or on the outer side wall of the shaft sleeve (11), one end of the oil return groove (20) is communicated with the end surface of the framework oil seal (10) close to the shaft sleeve (11), and the other end is communicated with the inner cavity of the sewing machine shell (1).
5. The driving mechanism of the oscillating seat of the sewing machine according to claim 2, characterized in that a bearing (13) is further arranged between the rotating shaft (7) of the motor and the backstitch wrench hole (6), the inner ring of the bearing (13) is tightly connected with the rotating shaft (7) of the driving motor (2), the outer ring of the bearing (13) is tightly connected with the backstitch wrench hole (6), the bearing (13) is positioned at the inner end of the backstitch wrench hole (6), and the bearing (13) and the framework oil seal (10) are axially arranged along the rotating shaft (7) of the driving motor (2).
6. The driving mechanism of the oscillating seat of the sewing machine according to claim 1, wherein the oil sealing member is a shaft sleeve (11) and a framework oil seal (10) or a shaft sleeve (11) and an O-shaped ring (12), the outer side wall of the shaft sleeve (11) is tightly matched and connected with the hole wall of the backstitch wrench hole (6), and the rotating shaft (7) of the driving motor (2) is hermetically connected with the inner hole wall of the shaft sleeve (11) through the framework oil seal (10) or the O-shaped ring (12).
7. The driving mechanism of the oscillating base of the sewing machine according to claim 6, characterized in that an annular groove (14) is arranged on the inner hole wall of the shaft sleeve (11) at the rear side of the framework oil seal (10) or the O-shaped ring (12), an oil return hole (15) is arranged on the side wall of the shaft sleeve (11) along the axial direction of the shaft sleeve (11), one end of the oil return hole (15) is communicated with the annular groove, and the other end is communicated with the inner cavity of the machine shell; or an oil return channel (16) is arranged on the shaft sleeve (11) at the rear side of the framework oil seal (10) or the O-shaped ring (12) along the radial direction of the shaft sleeve (11), an oil guide groove (17) is arranged on the outer side wall of the shaft sleeve (11), one end of the oil guide groove (17) is communicated with the oil return channel (16), and the other end of the oil guide groove is communicated with the inner cavity of the sewing machine shell (1).
8. The driving mechanism of the oscillating seat of the sewing machine according to claim 1, wherein the oil sealing member is a shaft sleeve (11) and a framework oil seal (10), the outer side wall of the shaft sleeve (11) is tightly matched and connected with the hole wall of the backstitch wrench hole (6), the rotating shaft (7) of the driving motor (2) is arranged in the inner hole of the shaft sleeve (11) in a penetrating manner, the rear end of the backstitch wrench hole (6) is an expanding part, the framework oil seal (10) is arranged in the expanding part, the outer side wall of the framework oil seal (10) is connected with the hole wall of the expanding part in a sealing manner, and the inner side wall of the framework oil seal is connected with the rotating shaft (7) of the driving motor (2.
9. The driving mechanism of the oscillating seat of the sewing machine according to claim 8, characterized in that an oil return hole (15) is arranged in the machine shell, one end of the oil return hole (15) is communicated with the end surface of the framework oil seal (10) close to the shaft sleeve (11), and the other end is communicated with the inner cavity of the machine shell (1) of the sewing machine.
10. The sewing machine oscillating seat driving mechanism according to claim 1, characterized in that the end face sealing piece is separately arranged from the installation end face of the driving motor (2) or the end face sealing piece and the installation end face of the driving motor (2) are in an integrated structure.
11. The sewing machine oscillating seat drive mechanism according to claim 1 or 10, characterized in that the end face seal is a gasket (18) or a sealing ring (19).
12. The driving mechanism of the oscillating seat of the sewing machine according to claim 1, characterized in that the diameter of the backstitch wrench hole (6) is enlarged or reduced to be the same as the diameter of the rotating shaft (7) of the driving motor (2), the rotating shaft (7) of the driving motor (2) is arranged in the backstitch wrench hole (6) in a penetrating way, a groove for installing an oil sealing piece is arranged on the inner hole wall of the backstitch wrench hole (6) or the rotating shaft (7) of the driving motor (2), and the oil sealing piece is arranged in the groove to seal the backstitch wrench hole (6) and the rotating shaft (7) of the driving motor (2) with oil.
13. The sewing machine swing seat drive mechanism according to claim 12, wherein the oil seal is a skeleton oil seal (10) or an O-ring (12).
14. The sewing machine oscillating seat driving mechanism according to claim 12, characterized in that an oil return hole (15) for returning oil on the rotating shaft (7) of the driving motor (2) to the inner cavity of the sewing machine housing (1) is provided in the housing.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781050 | 2019-05-28 | ||
| CN201920781059 | 2019-05-28 | ||
| CN2019207810506 | 2019-05-28 | ||
| CN2019207815849 | 2019-05-28 | ||
| CN2019207810597 | 2019-05-28 | ||
| CN201920781584 | 2019-05-28 | ||
| CN201920851008 | 2019-06-06 | ||
| CN2019208510087 | 2019-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210657418U true CN210657418U (en) | 2020-06-02 |
Family
ID=68148765
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921274534.8U Active CN210657418U (en) | 2019-05-28 | 2019-08-07 | Driving mechanism for swing seat of sewing machine |
| CN201910724226.9A Pending CN110331528A (en) | 2019-05-28 | 2019-08-07 | A kind of sewing machine swing seat driving mechanism |
Family Applications After (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331528A (en) * | 2019-05-28 | 2019-10-15 | 浙江沪龙科技股份有限公司 | A kind of sewing machine swing seat driving mechanism |
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| CN113026222B (en) * | 2021-03-24 | 2022-06-24 | 浙江沪龙科技股份有限公司 | Sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105040297A (en) * | 2015-07-21 | 2015-11-11 | 西安标准工业股份有限公司 | Industrial sewing machine with electronic stitch length adjusting mechanism |
| CN205474364U (en) * | 2016-03-23 | 2016-08-17 | 浙江美机缝纫机有限公司 | Backstitch operating mechanism's backstitch position of axle in sewing machine of stand front side |
| CN107780060B (en) * | 2016-08-25 | 2022-12-23 | 浙江美机缝纫机有限公司 | Needle gauge dial plate locking device of lockstitch sewing machine |
| CN208685188U (en) * | 2018-01-29 | 2019-04-02 | 上海标准海菱缝制机械有限公司 | A kind of feed length regulating mechanism of sewing machine |
| CN210657418U (en) * | 2019-05-28 | 2020-06-02 | 浙江沪龙科技股份有限公司 | Driving mechanism for swing seat of sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331528A (en) * | 2019-05-28 | 2019-10-15 | 浙江沪龙科技股份有限公司 | A kind of sewing machine swing seat driving mechanism |
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