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CN-224201073-U - Transmission mechanism, clutch and printer

CN224201073UCN 224201073 UCN224201073 UCN 224201073UCN-224201073-U

Abstract

The transmission mechanism comprises a first shaft body and a second shaft body which are coaxially arranged, wherein the first shaft body is connected with the second shaft body through a connecting structure, a first gear and a second gear are respectively arranged on the first shaft body and the second shaft body, the first gear comprises a first end face and a second end face in the axial direction of the first shaft body, the second gear comprises a third end face and a fourth end face, the first end face, the second end face, the third end face and the fourth end face are sequentially arranged, a part of the second end face protrudes to form a first friction part, and the first friction part is in butt joint with the third end face. According to the application, the first friction part is formed by protruding the part of the second end surface of the first gear and is used for abutting against the third end surface of the second gear, so that the contact area between the first gear and the second gear is effectively reduced, and the problem of failure of clutch operation caused by penetration of lubricating oil from the teeth of the first gear or the second gear between the second end surface and the third end surface is solved.

Inventors

  • FAN ZHIGUO

Assignees

  • 宁波像芯信息科技有限公司

Dates

Publication Date
20260505
Application Date
20250702

Claims (10)

  1. 1. A transmission mechanism, comprising: The first shaft body and the second shaft body are coaxially arranged, the first shaft body is connected with the second shaft body through a connecting structure, and a first gear and a second gear are respectively arranged on the first shaft body and the second shaft body; In the axial direction of the first shaft body, the first gear comprises a first end face and a second end face, the second gear comprises a third end face and a fourth end face, the first end face, the second end face, the third end face and the fourth end face are sequentially arranged, part of the second end face protrudes to form a first friction part, and the first friction part is in butt joint with the third end face.
  2. 2. The transmission mechanism according to claim 1, wherein the first friction portion is an arc-shaped protrusion, and the first friction portion is disposed around a circumference of the first shaft body.
  3. 3. The transmission mechanism according to claim 1, wherein the first friction portion includes a plurality of dot-like projections, the plurality of dot-like projections being spaced apart in a circumferential direction and/or a radial direction of the first shaft body.
  4. 4. A transmission according to any one of claims 1 to 3, wherein part of the third end face projection forms a second friction portion which abuts against the first friction portion, the first friction portion having the same structure as the second friction portion.
  5. 5. The transmission mechanism according to claim 1, wherein the connection structure includes a clamping groove and a buckle, the clamping groove penetrates through the first end face and the second end face, the buckle is arranged on the third end face, and the buckle penetrates through the clamping groove to be clamped on the first end face.
  6. 6. The transmission mechanism according to claim 5, wherein in the circumferential direction of the first shaft body, the clamping groove comprises a first groove wall and a second groove wall at both ends, the buckle is movably arranged between the first groove wall and the second groove wall, and the buckle can be abutted with the first groove wall or the second groove wall.
  7. 7. The transmission mechanism of claim 1, further comprising an elastic member respectively connected to the first gear and the second gear, the elastic member being in an elastically deformed state having a movement tendency to urge the second shaft body to rotate relative to the first shaft body.
  8. 8. The transmission mechanism according to claim 7, wherein a first connecting portion and an arc-shaped groove are arranged on the first end face, a second connecting portion is arranged on the third end face, the second connecting portion penetrates through the arc-shaped groove to protrude out of the first end face, and two ends of the elastic piece are respectively connected to the first connecting portion and the second connecting portion; The elastic piece is in an elastic deformation state and has a movement tendency of pushing the first gear and the second gear to be close to each other.
  9. 9. A clutch comprising a drive gear and a transmission mechanism according to any one of claims 1 to 8, wherein the first gear is provided with a first undertooth portion and the second gear is provided with a second undertooth portion, the first undertooth portion and the second undertooth portion being each adapted to receive the drive gear.
  10. 10. A printer comprising a clutch according to claim 9, wherein the first shaft and/or the second shaft are/is connected to a load, respectively.

Description

Transmission mechanism, clutch and printer Technical Field The application relates to the technical field of mechanical transmission, in particular to a transmission mechanism, a clutch and a printer. Background With the continuous development of printer technology, the transmission mechanism inside the printer is also continuously improved and perfected. In addition to the gearing arrangement, many critical rotating component shafts or rollers in printers require a drive clutch because the number of motors cannot be too great due to space and cost constraints. In the related art, a clutch of a printer generally adopts a gear transmission structure, and power transmission and disconnection are realized through engagement and disengagement of gears. In the long-term use process, lubricating oil can permeate to the middle of the clutch part from the tooth of gear, leads to producing lubrication effect between two parts for unable normal action under the extension spring effect, thereby appear occasional clutch operation inefficacy situation. Disclosure of utility model The application aims to provide a transmission mechanism, a clutch and a printer, and solves the problem of transmission failure of the transmission mechanism. In order to achieve the purpose of the application, the application provides the following technical scheme: In a first aspect, the present application provides a transmission comprising: The first shaft body and the second shaft body are coaxially arranged, the first shaft body is connected with the second shaft body through a connecting structure, and a first gear and a second gear are respectively arranged on the first shaft body and the second shaft body; In the axial direction of the first shaft body, the first gear comprises a first end face and a second end face, the second gear comprises a third end face and a fourth end face, the first end face, the second end face, the third end face and the fourth end face are sequentially arranged, part of the second end face protrudes to form a first friction part, and the first friction part is in butt joint with the third end face. In one embodiment, the first friction portion is an arc-shaped protrusion, and the first friction portion is disposed around the circumference of the first shaft body. In one embodiment, the first friction part comprises a plurality of dot-shaped protrusions, and the plurality of dot-shaped protrusions are distributed at intervals in the circumferential direction and/or the radial direction of the first shaft body. In one embodiment, a part of the third end surface is convex to form a second friction part which is in contact with the first friction part, and the structure of the first friction part is the same as that of the second friction part. In one embodiment, the connection structure includes a clamping groove and a buckle, the clamping groove penetrates through the first end face and the second end face, the buckle is arranged on the third end face, and the buckle penetrates through the clamping groove to be clamped on the first end face. In one embodiment, in the circumferential direction of the first shaft body, the clamping groove comprises a first groove wall and a second groove wall at two ends, the buckle is movably arranged between the first groove wall and the second groove wall, and the buckle can be abutted with the first groove wall or the second groove wall. In one embodiment, the transmission mechanism further includes an elastic member, where the elastic member is connected to the first gear and the second gear respectively, and the elastic member is in an elastic deformation state and has a movement tendency of pushing the second shaft body to rotate relative to the first shaft body. In one embodiment, a first connecting portion and an arc-shaped groove are arranged on the first end face, a second connecting portion is arranged on the third end face, the second connecting portion penetrates through the arc-shaped groove to protrude out of the first end face, and two ends of the elastic piece are respectively connected to the first connecting portion and the second connecting portion; The elastic piece is in an elastic deformation state and has a movement tendency of pushing the first gear and the second gear to be close to each other. In a second aspect, the present application further provides a clutch, including a driving gear and a transmission mechanism according to any one of the various embodiments of the first aspect, where the first gear is provided with a first undertooth portion, and the second gear is provided with a second undertooth portion, and both the first undertooth portion and the second undertooth portion are used for accommodating the driving gear. In a third aspect, the present application further provides a printer, including the clutch according to the second aspect, where the first shaft and/or the second shaft are/is connected to a load, respectively. Compared with