Rotating actuator and utilize the OPC drum core gear of this mechanism
Technical field
The present invention relates to a kind of driving mechanism, relate in particular to a kind of rotating actuator and utilize the OPC of this mechanism to rouse core gear.
Background technique
Toner cartridge is the vitals of printer or duplicating machine, and toner cartridge one end is equipped with bulging core gear, and the side face of drum core gear is provided with helical teeth; Rouse core one end relatively and be provided with the transmission convexity, correspondingly printer or duplicating machine are provided with and drive the connecting piece that toner cartridge rotates, and this connecting piece is provided with the transmission groove that matches with the transmission convexity; As shown in Figure 1; The side face of this transmission groove is parallel with rotatingshaft, and the protruding general shape of cross section of existing transmission is consistent with transmission groove, but stretches into transmission groove or withdraw from from transmission groove for the ease of the transmission convexity; Leave the gap between transmission convexity and the transmission groove inwall; Again because the transmission convex cross section is roughly triangular in shape, cause in the transmission process that this transmission is protruding rotates with transmission groove no longer synchronously, in the twisting process the protruding applying with transmission groove of transmission to locate be a basic Line of contact along the axle setting; Cause the protruding serious wear of transmission, noise is bigger during work.
Summary of the invention
The invention provides a kind of rotating actuator, solved between transmission convexity and the transmission groove of conventional drives and have the gap, the protruding serious wear of transmission when causing transmission, the problem that noise is big.
A kind of rotating actuator, comprising can be around the transmission convexity and the transmission groove of same rotational, and the protruding periphery of described transmission is provided with the driving face that parallels to the axis; Driving face is close to the line of contact at transmission groove oral area edge; Make transmission convexity and transmission groove mesh, the protruding periphery of described transmission also is provided with the inclined-plane, location, and the spacing of inclined-plane, location and axis increases from the top to the bottom gradually; The transmission convex portion stretches into transmission groove during transmission, and middle part, inclined-plane, location is near passing groove oral area edge.
To stretch into the length of transmission groove be 1~5mm to described transmission convexity during transmission.
Inclined-plane, described location reduces from the top to bottom width gradually.
Described transmission convex top is provided with the junction of taper, is convenient to the transmission convexity and stretches in the transmission groove.
Between described transmission convex top and the transmission groove bottom surface is 0.5~5mm, prevents that both from conflicting and influence engagement driving.
Described driving face and transmission groove inner peripheral surface reduce wear along engagement.
The present invention also provides a kind of OPC drum core gear; Comprise that transmission is protruding, the transmission groove on the connecting piece that this transmission is protruding and actuation gear rotates constitutes rotating actuator, and the protruding periphery of described transmission is provided with the driving face of parallel shaft; Driving face is close to the line of contact at transmission groove oral area edge; Make transmission convexity and transmission groove mesh, the protruding periphery of described transmission also is provided with the inclined-plane, location, and the spacing of inclined-plane, location and axis increases from the top to the bottom gradually; The transmission convex portion stretches into transmission groove during transmission, and middle part, inclined-plane, location is near the edge of transmission groove oral area.
The drum core gear is a kind of easily-consumed products, and link generally be installed in print or copier on, generally need not change, so the structure of transmission groove is for fixing, and transmission is raised with more variation.
The transmission convexity of driving mechanism of the present invention is provided with the inclined-plane, location; Stretch in the process of transmission groove in the transmission convexity, the inclined-plane, location is gradually near transmission groove oral area edge, when being close to this edge; Because driving face meshes with transmission groove oral area edge always; Make the transmission convexity in transmission groove, realize the location, even there is not the gap in line of contact on driving face and the transmission groove, transmission convexity and transmission groove also can be easily separated and combined; Therefore the protruding wearing and tearing of transmission can be less, and noise also can be corresponding lower.
Description of drawings
Fig. 1 is the structural representation of driving mechanism of the present invention;
Fig. 2 is the protruding structural representation of first embodiment's transmission;
Fig. 3 is the structural representation with the protruding transmission groove that cooperates of transmission shown in Figure 2;
Fig. 4 is a transmission groove plan view shown in Figure 3;
Fig. 5 is the protruding and unassembled structural representation of transmission groove shown in Figure 3 of transmission shown in Figure 2;
Fig. 6 is a driving mechanism side view shown in Figure 5;
Fig. 7 is a driving mechanism plan view shown in Figure 5;
Fig. 8 is that transmission shown in Figure 2 transmission groove protruding and shown in Figure 3 engages 50% structural representation;
Fig. 9 is a driving mechanism side view shown in Figure 8;
Figure 10 is a driving mechanism plan view shown in Figure 8;
The structural representation that Figure 11 is protruding for transmission shown in Figure 2 and transmission groove shown in Figure 3 engages fully.
Figure 12 is a driving mechanism side view shown in Figure 11;
Figure 13 is a driving mechanism plan view shown in Figure 11;
Figure 14 is the protruding structural representation of second embodiment's transmission;
Figure 15 is the protruding plan view of transmission shown in Figure 14;
Figure 16 is the protruding structural representation of the 3rd embodiment's transmission.
Embodiment
As shown in Figure 1; A kind of driving mechanism; Comprise the transmission that is arranged on two pedestals 3,4 protruding 1 and transmission groove 2, protruding 1 part of transmission stretch in the transmission groove 2 and with its in the engagement of oral area edge, one of them pedestal will drive another one pedestal coaxial rotation thereupon when rotating.
As shown in Figure 2, transmission protruding 1 is all roughly triangular in shape with the cross section of transmission groove 2.The side face of transmission protruding 1 is decided to be inclined-plane 11, three secondary surfaces 13 and three driving faces 12 by three and surrounds, and it is equivalent to formed through cutting by a regular triangular prism.Wherein be decided to be corner angle that inclined-plane 11 is equivalent to regular triangular prism prune from the top with being tilted form, make the width at top greater than the width of its bottom.And driving face 12 is equivalent to the original side of tri-prism; Be parallel to described rotation axis; Secondary surface 13 is equivalent to the tri-prism side by the formation of partly pruning, and continuous with inclined-plane 11, location, and its main purpose is to avoid in the engagement process; Transmission protruding 1 is stuck, and transmission protruding 1 has formed irregular cone after cutting.
Can find out from Fig. 3 and 4, the equilateral triangle that the sectional shape of transmission groove 2 such as each angle are cut by the screens line 2a of broken line type, and also this equilateral triangle is consistent with the cross section size of above-mentioned tri-prism.Every limit of this equilateral triangle all is not a straight line, but is formed by connecting the line of contact 2b at camber line 2c and two ends, and the purpose that camber line is set also is to prevent that transmission protruding 1 can be stuck.Therefore, transmission groove 3 inner peripheral surface shapes do not have specific (special) requirements in fact, only need to satisfy to be large enough to hold the part that transmission protruding 1 is stretched into.
Shown in Fig. 5~7; When transmission convexity 1 did not engage with transmission groove 2, driving face 12 was close to engagement limit 2b, through three engagement limit 2b and three driving faces 12 pairings; Both have just realized engagement; Axially relative movement, and can not radially relatively rotate, be decided to be and leave big gap between inclined-plane 11 and the screens line 2a.
Along with transmission protruding 1 is constantly stretched into, shown in Fig. 8~10, when degree of engagement reached 50%, driving face 12 still was close to engagement limit 2b, dwindles half the and be decided to be inclined-plane 11 with screens line 2a gap.Because driving face 12 top width are little, and bottom width is big, make it and engagement limit 2b contact length increase.
Shown in Figure 11~13; Transmission protruding 1 and transmission groove 2 engage fully, and driving face 12 still is close to engagement limit 2b, only depends on screens line 2a and be decided to be inclined-plane 11; At this moment; The transmission convexity can not continue to stretch into toward in, and is not in place for fear of engaging, and leaves the gap of 0.5~5mm between protruding 1 top of transmission and groove 2 bottom surfaces.
Shown in 14~15; Protruding 1 side face of this transmission is decided to be inclined-plane 11, secondary surface 13 except a driving face 12, one, also has a cambered surface 14, these cambered surface 14 parallel rotation axis; Be mainly used in transmission groove 2 oral area edges and cooperate, stop transmission protruding 1 to relatively rotate with transmission groove 2.Shown in figure 16; The side face of this transmission protruding 1 is decided to be inclined-plane 11 by two driving faces 12 and two, also comprises a cambered surface 14, and the effect of this cambered surface 14 is similar; Be provided with according to transmission groove 2 oral area shapes; Avoid transmission protruding 1 to cooperate, three driving faces 12 are set certainly have bigger transmission torsion with transmission groove 2, and simple in structure.
On printer or copier; Be equipped with and order about the connecting piece that OPC drum core gear rotates, generally be provided with on this connecting piece like Fig. 3 and transmission groove 2 shown in Figure 4, because connecting piece is fixedly mounted on the equipment; Generally can not change, and OPC drum core gear is a kind of easily-consumed products.
A kind of OPC drum core gear comprises the gear body, and this gear body one end end face is provided with transmission convexity 1 as shown in Figure 2, in order to make connecting piece and gear matched tight, is provided with the protruding end of transmission relatively at the gear body coaxial stage clip is set.
OPC drum core gear adopts the said structure transmission protruding, can cooperate with the line of contact at transmission groove oral area edge on the connecting piece, and is very close to each other between the two; During transmission, though both also are the contacts of line face, the Line of contact vertical rotation axis; Make torsion increase, wearing and tearing reduce, and noise reduces.