CN218147266U

CN218147266U - Upper lever of sewing machine

Info

Publication number: CN218147266U
Application number: CN202222472333.7U
Authority: CN
Inventors: 马国锋
Original assignee: Taizhou Xinben Intelligent Technology Co ltd
Current assignee: Taizhou Xinben Intelligent Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-12-27
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a last lever of sewing machine, including the body of rod, be provided with articulated seat on the body of rod, articulated seat one side is the eccentric wheel section, and the opposite side is the needle bar section, and the distance of articulated seat to eccentric wheel section tip is less than the distance of articulated seat to needle bar section tip, and body of rod eccentric wheel section middle part is fixed with the balancing piece. The weight of this go up the articulated seat both sides of lever is roughly the same, can reduce vibrations and the noise that the during operation produced, makes work more stable.

Description

Upper lever of sewing machine

Technical Field

The utility model relates to a sewing machine technical field specifically is a sewing machine goes up lever.

Background

A sewing machine is a commonly used garment manufacturing apparatus, and sews a cloth by up-and-down swinging of a needle bar. Chinese patent No. 97108397.5, entitled sewing machine with needle thread take-up lever, discloses a structure for driving a needle bar to move up and down by an upper lever. The middle part of the upper lever is fixed on the frame in a swinging way, one end of the upper lever is connected with the needle rod through the needle rod holding slide block, the other end of the upper lever is connected through an eccentric wheel with a transmission rod, and when the eccentric wheel rotates, the upper lever is driven to swing through a connecting rod, so that the needle rod is driven to move up and down.

Although the structure is simpler, the connecting point of the upper lever and the rack is close to one side of the eccentric wheel, so that the weights of two sides of the hinge point are different, the weight close to one side of the needle rod is larger, and the weight close to one side of the cam is smaller, thereby enabling the upper lever to generate larger vibration and noise in the high-speed swinging process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, provide a last lever of sewing machine, the weight of articulated seat both sides is roughly the same, reduces vibrations and the noise that the during operation produced.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a last lever of sewing machine, includes the body of rod, is provided with articulated seat on the body of rod, and articulated seat one side is the eccentric wheel section, and the opposite side is the needle bar section, and the distance of articulated seat to eccentric wheel section tip is less than the distance of articulated seat to needle bar section tip, and body of rod eccentric wheel section middle part is fixed with the balancing piece.

Through above-mentioned technical scheme, set up the balancing piece and can adjust the weight at articulated seat both ends, make the weight at articulated seat both ends roughly the same to reduce the impact and the vibrations that the lever produced when the swing. The balance weight is fixed in the middle of the eccentric wheel section, so that interference on normal swinging of the upper lever is avoided, and transmission between the connecting rod and the upper lever is also not influenced. The balance weight is additionally fixed for adjustment, so that each sewing machine can be finely adjusted, and the best effect is achieved.

As a further scheme: the needle bar section is located the front end portion of articulated seat, and eccentric wheel section is located the rear end portion of articulated seat, and the balancing piece is fixed at the preceding terminal surface of eccentric wheel section.

Through the technical scheme, the whole gravity center position of the eccentric wheel section and the balance block is approximately in the same plane with the whole gravity center position of the needle rod section, so that the effects of reducing impact and vibration can be better achieved.

As a further scheme: the upper part of the rod body is provided with an oil guide pipe which guides lubricating oil from the end part of the eccentric wheel section to the end part of the needle bar section.

Through above-mentioned technical scheme, because the export setting of lubricating oil is in the eccentric wheel section, can draw the needle bar section at eccentric wheel section spun lubricating oil through the setting of drawing oil pipe, lubricate the needle bar section. If the oil guide pipe is not arranged, the upper lever swings quickly during working, lubricating oil sprayed from a lubricating oil outlet can be thrown out from the surface of the upper lever along with vibration, and the lubricating oil cannot flow to the needle rod section from the eccentric wheel section well.

As a further scheme: the oil guiding pipe is filled with an oil absorption core.

Through above-mentioned technical scheme, the wick can further adsorb lubricating oil to with lubricating oil from eccentric wheel section tip drainage to needle bar section tip. The oil absorption core can be made of cotton thread, yarn, felt and the like.

As a further scheme: the end of the oil suction core extends out of the oil guide pipe.

Through above-mentioned technical scheme, the wick sets up like this, can be not convenient for absorb oil-out spun lubricating oil, also be convenient for simultaneously draw lubricating oil to the position that takes place relative rotation, lubricate it.

As a further scheme: a counter bore is formed in the balance block, and a screw is installed in the counter bore to fix the eccentric wheel section and the eccentric wheel section.

Through the technical scheme, the end part of the screw cannot protrude out of the balance block due to the arrangement of the counter bore, interference is avoided when the screw moves, the screw and the eccentric wheel section are directly fixed through the screw, and the screw is convenient to fix.

As a further scheme: the needle rod section is provided with a through hole.

Through above-mentioned technical scheme, the weight of needle pole section can be reduced in the setting of through-hole to reduce the weight difference between the lever both ends.

Compared with the prior art, the beneficial effects of the utility model are that: the weights at the two ends of the hinged seat are basically in the same state by arranging the balance block, so that the impact and vibration generated when the rod body swings are reduced.

Drawings

FIG. 1 is a perspective view of a first embodiment;

FIG. 2 is a top view of the first embodiment;

FIG. 3 is a schematic top view of the oil drainage pipe according to the second embodiment;

fig. 4 is a schematic sectional structure view of the end of the oil absorption core and the oil guiding pipe.

Reference numerals are as follows: 1. a rod body; 2. a hinged seat; 3. an eccentric wheel section; 4. a needle bar section; 5. a counterbalance; 6. An oil guide pipe; 7. an oil absorbent core; 8. a counter bore; 9. a through hole; 10. a hinge hole; 11. binding a belt;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows: upper lever of sewing machine

As shown in fig. 1, an upper lever of a sewing machine comprises a strip-shaped rod body 1, wherein a hinged seat 2 used for being hinged with a rack is arranged on the rod body 1. One side of the hinged seat 2 is provided with an eccentric wheel section 3, and the other side is provided with a needle rod section 4. The end part of the needle bar section 4 is provided with a hinge hole 10, and the hinge hole 10 is used for being hinged with other parts, so that the needle bar is driven to move up and down. The distance from the hinged seat 2 to the end of the eccentric section 3 is less than the distance from the hinged seat 2 to the end of the shank section 4. The balance weight 5 is fixed in the middle of the eccentric wheel section 3 of the rod body 1 and used for balancing the weight at two ends of the hinged seat 2 and reducing impact and vibration generated during working.

Counter bores 8 are formed in the balance blocks 5, screws are installed in the counter bores 8, and the balance blocks 5 are fixed on the eccentric wheel sections 3 through the screws.

As shown in fig. 2, the shaft section 4 and the eccentric section 3 are located at the front and rear ends of the hinge base 2 in the axial direction, wherein the shaft section 4 is located near the front end and the eccentric section 3 is located near the rear end. The balance weight 5 is fixed on the front end surface of the eccentric wheel section 3. The arrangement enables the gravity center position of the eccentric wheel section 3 and the balance block 5 as a whole to be basically in the same plane with the gravity center position of the needle rod section 4, thereby further improving the stability of the upper lever during swinging, reducing impact and vibration and enabling the sewing machine to work more stably.

A plurality of through holes 9 are further formed in the needle bar section 4, and the weight of the needle bar section 4 can be reduced due to the through holes 9, so that the weight difference between the needle bar section 4 and the eccentric wheel section 3 is reduced.

Example two

As shown in fig. 3 and 4, the second embodiment is different from the first embodiment in that an oil guiding pipe 6 is fixed above the rod body 1 of the second embodiment, and the oil guiding pipe 6 extends from above the eccentric wheel section 3 to above the needle rod section 4 for guiding the lubricating oil sprayed from the eccentric wheel side to the needle rod section 4. The oil lead pipe 6 is directly bound on the rod body 1 through a binding belt 11, thereby fixing the rod body. The oil guiding pipe 6 is filled with an oil absorption core 7, and the oil absorption core 7 can be made of fiber with oil absorption capacity, such as cotton thread, cotton yarn, felt and the like.

The two ends of the oil suction core 7 extend out of the oil guide pipe 6, so that lubricating oil can be sucked more conveniently, and meanwhile, the end part of the oil suction core 7 of the needle rod section 4 can penetrate through the hinge hole 10 of the needle rod section 4, so that parts rotating in the hinge hole 10 are lubricated.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a last lever of sewing machine, includes the body of rod (1), is provided with articulated seat (2) on the body of rod (1), and articulated seat (2) one side is eccentric wheel section (3), and the opposite side is needle bar section (4), and articulated seat (2) are less than the distance of articulated seat (2) to needle bar section (4) tip to the distance of eccentric wheel section (3) tip, characterized by: a balance block (5) is fixed in the middle of the eccentric wheel section (3) of the rod body (1).

2. The upper lever of a sewing machine according to claim 1, wherein: the needle rod section (4) is located at the front end of the hinged seat (2), the eccentric wheel section (3) is located at the rear end of the hinged seat (2), and the balance block (5) is fixed on the front end face of the eccentric wheel section (3).

3. The upper lever of a sewing machine according to claim 1, wherein: the upper part of the rod body (1) is provided with an oil guide pipe (6) which guides lubricating oil from the end part of the eccentric wheel section (3) to the end part of the needle rod section (4).

4. A sewing machine upper lever according to claim 3, wherein: the oil guide pipe (6) is filled with an oil absorption core (7).

5. The upper lever of a sewing machine according to claim 4, wherein: the end part of the oil suction core (7) extends out of the oil guide pipe (6).

6. The upper lever of a sewing machine according to claim 1, wherein: a counter bore (8) is formed in the balance block (5), and a screw is installed in the counter bore (8) to fix the balance block (5) and the eccentric wheel section (3).

7. The upper lever of a sewing machine according to claim 1, wherein: the needle rod section (4) is provided with a through hole (9).