CN207919105U - A kind of sewing machine rocker structure - Google PatentsA kind of sewing machine rocker structure Download PDF
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- CN207919105U CN207919105U CN201820034958.6U CN201820034958U CN207919105U CN 207919105 U CN207919105 U CN 207919105U CN 201820034958 U CN201820034958 U CN 201820034958U CN 207919105 U CN207919105 U CN 207919105U
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- 238000009958 sewing Methods 0.000 title claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000004301 light adaptation Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000001131 transforming Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 230000037250 Clearance Effects 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000005035 ginseng Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
The utility model discloses a kind of sewing machine rocker structures,Belong to sewing machine field,Solve the problems, such as that caused needle platform stroke variation complicated for operation is inconvenient,Its key points of the technical solution are that including frame,It is rotationally connected with the upper axis of frame,And it is arranged in the needle platform of frame vertically,Needle platform coordinates with frame in sliding,It is fixedly connected with crank on upper axis,Crank is equipped with connecting shaft,When the driving crank rotation of upper axis, the above axis of connecting shaft is that pivot center revolves round the sun,Needle platform upper end is hinged with connecting rod,Small end is placed in connecting shaft and the two is in rotation connection,Turntable is rotatably connected on crank,Connecting shaft is vertical setting with turntable and the two is fixedly connected,Connecting shaft is in eccentric setting with turntable,It is equipped with adjustment axis on upper axis,The other end of adjustment axis is fixedly and coaxially connected the adjustment gear of driving disc rotation,The utility model is reasonable for structure,Rotation adjustment axis can reach transformation stroke to have achieved the purpose that not having to dismounting,It is easy to operate and easy to use.
The utility model is related to a kind of sewing machines, more specifically, it relates to a kind of sewing machine rocker structure.
Sewing machine is formed one or more stitchings on sewing, is made one or more layers seam with one or more sewing thread The machine that material interweaves or unites by a seam.It is producing and a kind of mechanical equipment common in life.Sewing such as leather equal thickness is thicker The stroke of thick object sewing machine machine syringe needle of sewing piece used compared to the thin object of the sewing pieces such as cloth of sewing thinner thickness The stroke of syringe needle in sewing machine machine is longer.Moreover, the shift motion that line jumps device can be set as benchmark.Also thick object is used The length that the toggle-action lever and line of sewing machine jump device is longer compared with thin object sewing machine, and it is that will reach the standard grade to lead to before penetrating needle that line, which jumps device, The ring crossed has the function of adjusting the pulling force of line, but the driving principle of Liang Zhong mechanisms is identical with running not to have difference, so two Kind machine can be combined into a sewing machine, be allowed to that the thicker sewing piece of thickness can be sewed or sew thinner thickness seam It threads object.
Currently, to disclose a kind of sewing machine machine changeable and turn for the Chinese invention patent of Publication No. CN106471172A Changing device, it includes the toggle-action lever on the upper axis of sewing machine by replacement, the replacement for making the lifting track of needle platform change Toggle-action lever；The replacement line for the travel path that can be changed with the interaction of lifting track and generation for substituting toggle-action lever jumps device, to pass through tune Markingoff pin platform lifts track and line jumps the motion track of device stroke, can be changed or convert the machine of sewing machine.
But above-mentioned technical proposal needs, by after disassembling shell, original toggle-action lever and line to be jumped device dismounting, will be substituted later bent Shank and replacement line jump device and are installed on sewing machine, put in back shell, complete the variation of sewing machine machine, reach its needle platform stroke Change.Such operation needs artificial dismounting, complicated for operation, and the variation of needle platform stroke is inconvenient.
Utility model content
In view of the deficienciess of the prior art, the utility model lies in that providing a kind of sewing machine rocker structure, rotation is adjusted Axis can reach transformation stroke to have achieved the purpose that not having to dismounting, easy to operate and easy to use.
To achieve the above object, the utility model provides following technical solution：A kind of sewing machine rocker structure, including frame Frame, the upper axis for being rotationally connected with frame and the vertical needle platform for being arranged in frame, the needle platform coordinate with frame in sliding, institute It states and is fixedly connected with crank on axis, the crank is equipped with connecting shaft, the connection when the upper axis driving crank rotation The above axis of axis is that pivot center revolves round the sun, and needle platform upper end is hinged with connecting rod, and the small end is placed in connecting shaft And the two is rotatably connected to turntable in rotation connection, on the crank, and the connecting shaft is vertical setting and two with turntable Person is fixedly connected, and the connecting shaft is in eccentric setting with turntable, and when the turntable rotates, the connecting shaft is with the center of turntable It revolves round the sun for center of rotation, adjustment axis is equipped on the upper axis, described adjustment axis one end extends to outside frame, the adjusting The other end of axis is fixedly and coaxially connected the adjustment gear of driving disc rotation.
By using above-mentioned technical proposal, when driven by rotary disc connecting shaft turns to crank close to one end of upper axis, connection The radius of axis revolution reduces, and reduces from the stroke for causing connecting rod to push the reciprocating motion of needle platform；When driven by rotary disc connecting shaft rotates When to one end far from upper axis of crank, the radius of connecting shaft revolution increases, from cause connecting rod push needle platform reciprocating motion row Cheng Zeng great, to achieve the purpose that adjust sewing machine stroke；When needing to adjust stroke, rotation connection axis drives adjustment gear, To make adjustment gear driving disc rotate, and then the position of axis is controlled to adjust, can reach change to have reached not having to dismantle The purpose for the journey that enters a new line, it is easy to operate and easy to use.
The utility model is further arranged to：The connection gear engaged with adjustment gear is rotatably connected on the crank, The connection gear is fixedly connected with turntable in coaxial arrangement and the two.
By using above-mentioned technical proposal, engaged with connection gear using adjustment gear, it can be with when adjustment gear rotates So that turntable is rotated, and fixed connection gear using adjustment gear, prevents connecting shaft stress from turntable being made to rotate.
The utility model is further arranged to：Mounting groove, the connection gear and adjustment gear are offered on the crank It is rotationally connected in mounting groove, the opening being connected to mounting groove, the turntable closing opening is offered on the crank.
By using above-mentioned technical proposal, reduces dust and impurity enters between connection gear and adjustment gear, reach Dust-proof effect, keeps the transmission between connection gear and adjustment gear more smooth, and increase service life.
The utility model is further arranged to：Rolling bearing is equipped between the turntable and opening sidewalls.
By using above-mentioned technical proposal, reduce the frictional force between turntable and opening sidewalls, makes turntable rotation more It is smooth, and turntable is installed on crank using rolling bearing, keep turntable more firm with winch connecting structure.
The utility model is further arranged to：The one end of the adjustment axis far from adjustment gear is arranged with adjusting block, described Adjustment axis is equipped with spline, and the adjusting block is equipped with the keyway being adapted to spline, and the adjusting block is in slide axially with adjustment axis Radially fixed connection, the upper axis offer several card slots on one end end face far from crank, the adjusting block is equipped with and card The fixture block of slot adaptation.
By using above-mentioned technical proposal, when fixture block is placed in card slot, adjustment axis is fixedly connected with upper axis, is prevented Upper axis is relatively rotated with adjustment axis, and the relative position of connecting shaft and crank is fixed；It is sliding when needing metering needle platform stroke Movable slider makes fixture block be detached from from card slot, then rotates adjusting block and drives adjustment axis, reaches adjustment effect.
The utility model is further arranged to：The adjustment axis is fixedly connected with conflict block close to one end of adjusting block, institute The diameter for stating conflict block is more than the diameter of adjustment axis.
By using above-mentioned technical proposal, the axial position of adjusting block is defined using conflict block, prevents adjusting block It is slid from adjustment axis.
The utility model is further arranged to：Jumper wire device is hinged on the frame, the other end of the jumper wire device extends To outside frame, wire jumper bar is hinged in the middle part of the jumper wire device, the wire jumper bar is hinged with connecting rod.
By using above-mentioned technical proposal, when connecting rod pumps under the drive of connecting shaft, wire jumper bar is driven It reciprocatingly slides in the vertical direction, makes wire jumper bar that jumper wire device be driven up and down reciprocatingly to swing and have the function that bracing wire；Connecting rod is needle platform Different trips are provided and provide different amplitudes of fluctuation simultaneously for jumper wire device, to provide the line of different length.
The utility model is further arranged to：The lower end of the wire jumper bar is sheathed in connecting shaft, the wire jumper bar and company Spindle is in rotation connection.
By using above-mentioned technical proposal, achieve the effect that wire jumper bar and connecting rod are hinged, and simplify connection structure, Keep the connection structure between wire jumper bar and connecting rod more firm.
In conclusion the utility model has the advantages that：The stroke of needle platform is adjustable, user easy to operate Just, connection structure is stablized, and adjusting is smooth, and service life is long.
Description of the drawings
Fig. 1 is the stereogram of the present embodiment；
Fig. 2 is the structural schematic diagram that the present embodiment is used to show brace and connecting rod framework；
Fig. 3 is the sectional view that the present embodiment is used to show brace and connecting rod framework；
Fig. 4 is the structural schematic diagram that the present embodiment is used to show adjusting block.
Reference numeral：1, frame；11, wire jumper slot；2, brace and connecting rod framework；21, crank；211, connecting shaft；212, turntable； 213, connection gear；214, rolling bearing；215, mounting groove；216, it is open；22, connecting rod；23, needle platform；3, jumper wire construction；31、 Wire jumper bar；32, supporting rod；33, jumper wire device；4, upper axis；41, adjustment axis；411, adjustment gear；412, adjusting block；413, fixture block； 414, keyway；415, spline；42, card slot；43, conflict block.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；In this practicality In novel description, it is to be understood that if there is the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" to be It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore retouched in attached drawing The term for stating position relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
A kind of sewing machine rocker structure, as shown in Figure 1, including upper axis 4, brace and connecting rod framework 2, frame 1 and jumper wire construction 3, wherein upper axis 4 is rotationally connected on frame 1 provides power for rocker structure, brace and connecting rod framework 2 provides up and down for sewing needle Shift motion, jumper wire construction 3 provide sewing thread for sewing needle.
As shown in Fig. 2, brace and connecting rod framework 2 includes crank 21, connecting rod 22 and needle platform 23, wherein crank 21 is fixedly connected on On upper axis 4,21 one end of crank is rotatably connected to turntable 212, but when the drive rotation of crank 21 of upper axis 4,212 or more axis 4 of turntable is Pivot center and revolve round the sun, 212 edge of turntable is fixedly connected with connecting shaft 211, when turntable 212 drive connecting shaft 211 rotate when, Connecting shaft 211 is revolved round the sun using the center line of turntable 212 as pivot center, one end of connecting rod 22 be placed in connecting shaft 211 and The two is rotatablely connected, and the other end of connecting rod 22 is hinged with the upper end of needle platform 23, and needle platform 23 is presented lower sliding with frame 1 and coordinated.When Line revolves round the sun centered on 211 or more axis 4 of connecting shaft when upper axis 4 is rotated with crank 21, and connecting shaft 211 is by connecting rod 22 to needle Platform 23 applies the power moved back and forth, makes needle platform 23 is different to move up and down.When turntable 212 drives connecting shaft 211 to rotate, change The distance between connecting shaft 211 and upper axis 4, to change radius when connecting shaft 211 or more axis 4 is center of circle rotation, from Connecting rod 22 is caused to push the change of the stroke of the reciprocating motion of needle platform 23.
As shown in figure 3, offering mounting groove 215 on crank 21, the opening being connected to mounting groove 215 is offered on crank 21 216, the closing of turntable 212 opening 216 is equipped with rolling bearing 214, to reduce turntable between turntable 212 and 216 side wall that is open Frictional force between 212 and 216 side walls of opening, turntable 212 are more firm with brace and connecting rod framework 2；It is coaxially fixed on turntable 212 It is connected with connection gear 213, connection gear 213 is rotationally connected in mounting groove 215, is rotatably connected to and is connected in mounting groove 215 The adjustment gear 411 of the engagement of gear 213 is connect, adjustment gear 411 is with upper axis 4 in coaxial arrangement.Adjusting is coaxially equipped on upper axis 4 Axis 41 is fixedly and coaxially connected between adjustment axis 41 and upper axis 4 in rotation connection, one end and the adjustment gear 411 of adjustment axis 41, is adjusted The one end of nodal axisn 41 far from adjustment gear 411 extends to outside frame 1.When needing to adjust stroke, rotation adjustment axis 41, which drives, to be adjusted Gear 411 to make 411 driving disc 212 of adjustment gear rotate, and then controls the position of connecting shaft 211, is not had to having reached Dismounting can achieve the purpose that convert stroke, easy to operate and easy to use.
As shown in figure 4, adjustment axis 41, which extends to one end outside frame 1, is equipped with spline 415, adjustment axis 41 is far from adjustment gear 411 one end is arranged with adjusting block 412, and adjusting block 412 is equipped with the keyway 414 being adapted to spline 415, spline 415 and keyway 414 be in clearance fit, and to which adjusting block 412 and adjustment axis 41 are in the radially fixed connection that slides axially, upper axis 4 is far from crank 21 Multiple card slots 42 are circumferentially offered on the end face of one end, adjusting block 412 is equipped with the fixture block 413 that card slot 42 is adapted to, when fixture block 413 blocks When being placed in card slot 42, adjustment axis 41 is fixedly connected with upper axis 4, prevents axis 4 from being relatively rotated with adjustment axis 41, by connecting shaft 211 are fixed with the relative position of crank 21；When needing metering needle 23 stroke of platform, slidable adjustment block 412 make fixture block 413 from It is detached from card slot 42, then rotates adjusting block 412 and adjustment axis 41 is driven to rotate, reach adjustment effect.Adjusting block 412 in order to prevent Sliding is fixedly connected with circular conflict block 43, conflict block in adjustment axis 41 close to one end of adjusting block 412 from adjustment axis 41 43 diameter is more than the diameter of adjustment axis 41.
As shown in Fig. 2, jumper wire construction 3 includes jumper wire device 33, wire jumper bar 31 and supporting rod 32, wherein 32 one end of supporting rod is solid Surely it is connected to frame 1（Referring to Fig. 1）, jumper wire device 33 is sheathed on the one end of supporting rod 32 far from frame 1 and the two is rotatablely connected, The one end of jumper wire device 33 far from supporting rod 32 extends to outside frame 1, and frame 1 opens up the wire jumper slot 11 passed through for jumper wire device 33（Ginseng See Fig. 1）, wire jumper slot 11 is in the strip being vertically arranged, and the space for determining rotation is provided for jumper wire device 33；31 upper end of wire jumper bar with The middle part of jumper wire device 33 is hinged, and the lower end of wire jumper bar 31 is placed in connecting shaft 211.When connecting rod 22 erects under the action of crank 21 When straight reciprocating motion, 33 reciprocally swinging of jumper wire device is driven by wire jumper bar 31, and amplitude of fluctuation is with the sliding of connecting shaft 211 And change, keep the stroke of wire jumper connecting rod 22 also larger, the amplitude of fluctuation of jumper wire device 33 is also larger, and the seam added is provided for sewing needle It threads line；When 23 stroke of needle platform is smaller, keep the stroke of wire jumper connecting rod 22 also smaller, the amplitude of fluctuation of jumper wire device 33 is also smaller, is Sewing needle provides plus few sewing thread, and the sewing thread of appropriate amount is provided for sewing needle.
Specific working mode：When needing to reduce the stroke of needle platform 23, slidable adjustment block 412 makes fixture block 413 from card slot 42 It is detached from, then rotation adjusting block 412 drives adjustment axis 41 to rotate, and adjustment axis 41 drives adjustment gear 411 to rotate, and utilizes adjusting tooth Wheel 411 is drivingly connected gear 213 and rotates, and to drive turntable 212 to rotate, and then changes connecting shaft 211 relative to upper axis 4 Position can reach transformation stroke to have achieved the purpose that not having to dismounting, easy to operate and easy to use.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.
1. a kind of sewing machine rocker structure, including frame（1）, be rotationally connected with frame（1）Upper axis（4）And it wears vertically In frame（1）Needle platform（23）, the needle platform（23）With frame（1）Coordinate in sliding, the upper axis（4）On be fixedly connected with song Handle（21）, the crank（21）It is equipped with connecting shaft（211）, when the upper axis（4）Drive crank（21）Connection when rotation Axis（211）The above axis（4）It revolves round the sun for pivot center, the needle platform（23）Upper end is hinged with connecting rod（22）, the connecting rod （22）Upper end is placed on connecting shaft（211）Upper and the two is in rotation connection, it is characterized in that：The crank（21）Upper rotation connection There is turntable（212）, the connecting shaft（211）With turntable（212）It is vertical setting and the two is fixedly connected, the connecting shaft （211）With turntable（212）In eccentric setting, when the turntable（212）Connecting shaft when rotation（211）With turntable（212）'s Center is that center of rotation revolves round the sun, the upper axis（4）On be equipped with adjustment axis（41）, the adjustment axis（41）One end extends to Frame（1）Outside, the adjustment axis（41）The other end be fixedly and coaxially connected driving disc（212）The adjustment gear of rotation （411）.
2. a kind of sewing machine rocker structure according to claim 1, it is characterized in that：The crank（21）On be rotatably connected to With adjustment gear（411）The connection gear of engagement（213）, the connection gear（213）With turntable（212）In coaxial arrangement and The two is fixedly connected.
3. a kind of sewing machine rocker structure according to claim 2, it is characterized in that：The crank（21）On offer installation Slot（215）, the connection gear（213）And adjustment gear（411）It is rotationally connected with mounting groove（215）It is interior, the crank （21）On offer and mounting groove（215）The opening of connection（216）, the turntable（212）Closing opening（216）.
4. a kind of sewing machine rocker structure according to claim 3, it is characterized in that：The turntable（212）With opening （216）Rolling bearing is equipped between side wall（214）.
5. a kind of sewing machine rocker structure according to claim 4, it is characterized in that：The adjustment axis（41）Far from adjusting tooth Wheel（411）One end be arranged with adjusting block（412）, the adjustment axis（41）Equipped with spline（415）, the adjusting block（412）On It is equipped with and spline（415）The keyway of adaptation（414）, the adjusting block（412）With adjustment axis（41）It is radially fixed in sliding axially Connection, the upper axis（4）Far from crank（21）One end end face on offer several card slots（42）, the adjusting block（412）On It is equipped with and card slot（42）The fixture block of adaptation（413）.
6. a kind of sewing machine rocker structure according to claim 5, it is characterized in that：The adjustment axis（41）Close to adjusting block （412）One end be fixedly connected with conflict block（43）, the conflict block（43）Diameter be more than adjustment axis（41）Diameter.
7. a kind of sewing machine rocker structure according to claim 6, it is characterized in that：The frame（1）On be hinged with wire jumper Device（33）, the jumper wire device（33）The other end extend to frame（1）Outside, the jumper wire device（33）Middle part is hinged with wire jumper bar （31）, the wire jumper bar（31）With connecting rod（22）It is hinged.
8. a kind of sewing machine rocker structure according to claim 7, it is characterized in that：The wire jumper bar（31）Lower end be arranged In connecting shaft（211）On, the wire jumper bar（31）With connecting shaft（211）In rotation connection.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|CN201820034958.6U CN207919105U (en)||2018-01-09||2018-01-09||A kind of sewing machine rocker structure|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|CN201820034958.6U CN207919105U (en)||2018-01-09||2018-01-09||A kind of sewing machine rocker structure|
|Publication Number||Publication Date|
|CN207919105U true CN207919105U (en)||2018-09-28|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CN201820034958.6U Expired - Fee Related CN207919105U (en)||2018-01-09||2018-01-09||A kind of sewing machine rocker structure|
Country Status (1)
|CN (1)||CN207919105U (en)|
- 2018-01-09 CN CN201820034958.6U patent/CN207919105U/en not_active Expired - Fee Related
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|CF01||Termination of patent right due to non-payment of annual fee|
|CF01||Termination of patent right due to non-payment of annual fee||
Granted publication date: 20180928
Termination date: 20190109