CN205062413U - Sewing machine - Google Patents
Sewing machine Download PDFInfo
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- CN205062413U CN205062413U CN201520757276.4U CN201520757276U CN205062413U CN 205062413 U CN205062413 U CN 205062413U CN 201520757276 U CN201520757276 U CN 201520757276U CN 205062413 U CN205062413 U CN 205062413U
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Abstract
The utility model provides a sewing machine, its durability that can improve the double rack belt of a messenger's upper shaft and a lower interlock to the double rack belt be can restrain and tooth and shake are taken place to jump. Internal tooth and upper shaft band pulley, left band pulley and the meshing of right band pulley of double rack belt, external tooth and a lower band pulley and counter wheel meshing. The tooth portion upper end of left side band pulley is located the position of leaning on the top than the tooth troops under one's command end of a lower band pulley. Consequently, the outer gear mesh's of tooth portion and the double rack belt of a lower band pulley the number of teeth increases. The load that acts on on each tooth that forms the external tooth reduces, therefore the durability of double rack belt obtains improving. The counter wheel meshes with the double rack belt mutually, consequently, and in the advancing direction's for counter wheel double rack belt upstream side and the downstream side formation sharp portion shorter than the imaginary line. The imaginary line is the extending direction's at the position that extends along the double rack belt in straight line between an upper shaft band pulley and a lower band pulley. Consequently, double rack belt also difficult emergence shake when advancing.
Description
Technical field
The utility model relates to a kind of Sewing machines.
Background technology
Sewing machines comprises axle and lower shaft.Upper axle extends on internal water level land, horn portion, and it can make eedle move up and down.Lower shaft extends on internal water level land, support portion, and it can make rotating shuttle rotate.The Japanese Unexamined Patent Publication Sewing machines of No. 245984 in 2000 comprises rotary hook drive device.Rotary hook drive device comprises axle, lower shaft, upper shaft pulley, lower shaft belt wheel, double cog belt and two idle pulleys.Upper axle and lower shaft extend in the mode be parallel to each other.Upper shaft pulley is fixed on an end of axle, and lower shaft belt wheel is fixed on an end of lower shaft.Two idle pulleys are configured on the downside of lower shaft belt wheel respectively.An idle pulley in two idle pulleys is configured on front side of lower shaft belt wheel, and another idle pulley is configured on rear side of lower shaft belt wheel.The internal tooth of double cog belt is meshed with upper shaft pulley, two idle pulleys, and the idler side of external tooth in two idle pulleys is meshed with lower shaft belt wheel.When upper axle and upper shaft pulley rotate, lower shaft belt wheel is by double cog belt, two idle pulleys and rotating.Thus, lower shaft and upper axle rotate linkedly.
Sometimes Sewing machines can be made the such as thicker cloth such as seat harness, air bag cloth.When eedle runs through cloth along with the making action of Sewing machines, load acts on axle.Load also can act on lower shaft belt wheel via double cog belt.But in above-mentioned Sewing machines, the number of teeth that double cog belt is meshed with lower shaft belt wheel is less.Therefore, likely occur to jump tooth (Japanese: Dentistry Fly び) between lower shaft belt wheel and double cog belt, cause Sewing machines cannot tailoring cloth.Jump tooth and refer to that belt is not meshed with belt wheel and skids.When the number of teeth that lower shaft belt wheel is meshed with double cog belt is less, the load acting on each tooth of the external tooth of double cog belt becomes large.Therefore, may crack at the tooth root place of double cog belt.Position in double cog belt between each idle pulley and upper shaft pulley is longer, and therefore, this position may be shaken along with advancing of double cog belt.Other parts of Sewing machines may be touched during the shake of double cog belt.Therefore, double cog belt may be caused breakage to occur, cracks.
Utility model content
The purpose of this utility model is to provide a kind of Sewing machines, and this Sewing machines can improve the durability of the double cog belt making axle and lower shaft interlock, and double cog belt can be suppressed to occur to jump tooth and shake.
The Sewing machines of technical scheme 1 comprises: upper shaft pulley, and it is fixed on the upper axle extended in the horizontal direction, first belt wheel, it is supported by the first axle part, and this first axle part extends in the mode parallel with above-mentioned upper axle, above-mentioned first belt wheel be located at above-mentioned upper shaft pulley below and with above-mentioned on the side in the orthogonal direction of axle, second belt wheel, it is supported by the second axle part, this the second axle part is parallel with above-mentioned the first axle part and be positioned at the position identical with above-mentioned the first axle part height, and above-mentioned second belt wheel is located at the position by the opposite side in the direction orthogonal with above-mentioned upper axle for above-mentioned first belt wheel, lower shaft belt wheel, it is fixed on lower shaft, the downside of this lower shaft axle on above-mentioned with above-mentioned on the parallel mode of axle extend, above-mentioned lower shaft belt wheel is between above-mentioned first belt wheel and above-mentioned second belt wheel, and double cog belt, it is annular, and comprise internal tooth and external tooth, above-mentioned internal tooth and above-mentioned upper shaft pulley, above-mentioned first belt wheel and above-mentioned second belt wheel are meshed, aforementioned external teeth is meshed with above-mentioned lower shaft belt wheel, the feature of this Sewing machines is, above-mentioned double cog belt is according to above-mentioned upper shaft pulley, above-mentioned lower shaft belt wheel, the order of above-mentioned first belt wheel and above-mentioned second belt wheel carries out establishing, this Sewing machines comprises the 3rd belt wheel, 3rd belt wheel is meshed with the arbitrary position in the first position in above-mentioned double cog belt and these two positions, the second position, above-mentioned first position refers to the position extended between shaft pulley and above-mentioned lower shaft belt wheel on above-mentioned in above-mentioned double cog belt, above-mentioned second position refers to the position extended between shaft pulley and above-mentioned second belt wheel on above-mentioned in above-mentioned double cog belt, the position by the top, lower end than the position be meshed with aforementioned external teeth in above-mentioned lower shaft belt wheel is located in the upper end at the position be meshed with above-mentioned internal tooth in above-mentioned first belt wheel.The upper end at the position be meshed with internal tooth in the first belt wheel is arranged in the position by the top, lower end at the position be meshed with external tooth than lower shaft belt wheel, and therefore, the number of teeth that lower shaft belt wheel is meshed with double cog belt increases.Therefore, double cog belt not easily occurs to jump tooth between lower shaft belt wheel and double cog belt.The number of teeth that lower shaft belt wheel is meshed with double cog belt increases, and therefore, when double cog belt is advanced, the load acted on each tooth forming external tooth reduces.Therefore, the durability of double cog belt is improved.3rd belt wheel is meshed with double cog belt, and therefore, when double cog belt is advanced, the position of in double cog belt, lay respectively at the direct of travel of double cog belt for the 3rd belt wheel upstream side and downstream is also not easily shaken.Therefore, the double cog belt of advancing not easily touches other parts of Sewing machines.Therefore, not easily there is breakage, crack in double cog belt.Therefore, Sewing machines can improve the durability of the double cog belt making axle and lower shaft interlock, and double cog belt can be suppressed to occur to jump tooth and shake.
The feature of the Sewing machines of technical scheme 2 is, above-mentioned 3rd belt wheel is meshed with the aforementioned external teeth at the above-mentioned arbitrary position in above-mentioned first position and these two positions, above-mentioned second position, the position be meshed with aforementioned external teeth in above-mentioned 3rd belt wheel at least partially, be positioned at for the imaginary line of the bearing of trend along above-mentioned arbitrary position, by the position of that side residing for another position in above-mentioned first position and these two positions, above-mentioned second position.The position be meshed with the 3rd belt wheel in double cog belt bends to the inside, and therefore, the number of teeth that upper shaft pulley is meshed with double cog belt increases.Not easily occur to jump tooth between upper shaft pulley and double cog belt.Therefore, Sewing machines can suppress double cog belt to occur to jump tooth further.
The feature of the Sewing machines of technical scheme 3 is, this Sewing machines comprises position adjusting mechanism, this position adjusting mechanism supports above-mentioned 3rd belt wheel in the mode that above-mentioned 3rd belt wheel can rotate, and can near or direction away from above-mentioned double cog belt on change the allocation position of above-mentioned 3rd belt wheel.The allocation position of the 3rd belt wheel can be adjusted to the 3rd belt wheel applies suitable tension force position to double cog belt by position adjusting mechanism.Therefore, Sewing machines can suppress double cog belt to occur to jump tooth further.
The feature of the Sewing machines of technical scheme 4 is, above-mentioned position adjusting mechanism comprises: shaft component, and it extends in the mode parallel with above-mentioned lower shaft, and supports above-mentioned 3rd belt wheel in the mode that above-mentioned 3rd belt wheel can rotate; Supporting member, it is for supporting above-mentioned shaft component; Contact site, the direction that its edge and above-mentioned shaft component intersect extends, and has the plane contacted with above-mentioned supporting member; Multiple elongated hole, the plurality of elongated hole runs through above-mentioned supporting member along the bearing of trend of above-mentioned shaft component, and longer on the direction parallel with the bearing of trend of above-mentioned contact site; Multiple fastener hole, the plurality of fastener hole is formed in the position relative with above-mentioned multiple elongated hole of above-mentioned contact site, and the internal diameter of above-mentioned fastener hole is less than the minor axis of above-mentioned elongated hole; And multiple screw member, the plurality of screw member has bar portion and head respectively, the end of that this head is located at above-mentioned bar portion, contrary with that side residing for above-mentioned contact site for above-mentioned supporting member side, the diameter of this head is greater than the minor axis of above-mentioned elongated hole, and the above-mentioned bar portion of above-mentioned multiple screw member runs through above-mentioned multiple elongated hole respectively and is anchored on above-mentioned multiple fastener hole.As long as multiple screw member is unscrewed by operator respectively and supporting member is moved in major diameter direction along elongated hole, the allocation position of the 3rd belt wheel just can be adjusted.Supporting member is remained on the 3rd belt wheel applies suitable tension force position to double cog belt by operator, then by fastening for multiple screw member and supporting member is fixed on contact site.Operator unscrews by means of only by multiple screw member, just can change the allocation position of the 3rd belt wheel.Therefore, Sewing machines can make the adjustment of the allocation position to the 3rd belt wheel comparatively easy.
Accompanying drawing explanation
Fig. 1 is the stereogram obtained from right front observation Sewing machines 1.
Fig. 2 observes the stereogram that obtains of Sewing machines 1 after eliminating upper cover 10, motor cover 13 from left back.
Fig. 3 is the stereogram obtained from observation column sections 3 inside, left front.
Fig. 4 observes the stereogram that obtains of Sewing machines 1 after eliminating column sections 3, horn portion 4 from right front.
Fig. 5 observes the stereogram that Poewr transmission mechanism 70 obtains from left front.
Fig. 6 is the front view of Poewr transmission mechanism 70.
Fig. 7 is the enlarged drawing in the W1 region in Fig. 2.
The front view of the Poewr transmission mechanism 70 when Fig. 8 is the allocation position of adjustment counter wheel 73.
Fig. 9 is the front view of the Poewr transmission mechanism 170 of the first variation.
Figure 10 is the front view of the Poewr transmission mechanism 270 of the second variation.
Figure 11 is the front view of the Poewr transmission mechanism 370 of the 3rd variation.
Detailed description of the invention
Below the Sewing machines 1 of an embodiment of the present utility model is described.The top to bottom, left and right, front and rear represented with arrow in accompanying drawing will be used in the following description.X-direction is the left and right directions of Sewing machines 1.Y direction is the fore-and-aft direction of Sewing machines 1.
Be described with reference to the structure of Fig. 1 ~ Fig. 4 to Sewing machines 1.The diagram of workbench 5, upper cover 10, motor cover 13, cloth presser 93 is eliminated in Fig. 2.As shown in Figure 1 and Figure 2, Sewing machines 1 comprises support portion 2, column sections 3 and horn portion 4.Upper cover 10 is arranged on column sections 3 upper end and upper end, horn portion 4.Support portion 2 extends along the longitudinal direction, and it comprises the first support portion 8 and the second support portion 9.First support portion 8 is in roughly cuboid box like, and the second support portion 9 is positioned at the first front, support portion 8.First support portion 8 is formed with opening portion 8A (with reference to Fig. 3) in upper wall portions.
As shown in Figure 3, the second support portion 9 comprises incorporating section 92 and needle plate support 91.Incorporating section 92, in roughly cuboid box like, is positioned at the first front, support portion 8.Incorporating section 92 length is in the lateral direction greater than the first support portion 8 length in the lateral direction.Incorporating section 92 length in the vertical direction and the first support portion 8 same length in the vertical direction.Incorporating section 92 has lower shaft 7 in inside.Lower shaft 7 extends in straight line shape along the longitudinal direction at the left and right directions substantial middle place of incorporating section 92.Coupling part between first support portion 8 front surface and rear surface, incorporating section 92 forms wall portion 96.Wall portion 96 is spaced apart by the first support portion 8 and incorporating section 92.Wall portion 96 has axis hole 97.Axis hole 97 runs through wall portion 96.Lower shaft 7 is inserted in axis hole 97, and to extend across the mode in the first support portion 8 and the second support portion 9 (needle plate support 91, incorporating section 92).
The shape of needle plate support 91 is roughly cuboids but downside there occurs bending box like, and needle plate support 91 is forwards given prominence to from front surface left and right directions substantial middle place, incorporating section 92.Needle plate support 91 length is in the vertical direction roughly the half of incorporating section 92 length in the vertical direction.Needle plate support 91 upper end is positioned at than the position of upper end, incorporating section 92 slightly by top.Be connected between needle plate support 91 with incorporating section 92.Tangential knife, lower shaft 7 leading section and rotating shuttle 11 is accommodated with in needle plate support 91.Rotating shuttle 11 is connected with lower shaft 7 front end.Workbench 5 (with reference to Fig. 1) is set in needle plate support 91 upper end.Workbench 5 has needle plate 12 (with reference to Fig. 1) at substantial middle place, needle plate 12 has appearance pin hole at substantial middle place.
As shown in Figure 2, column sections 3 extends upward from the first top, support portion 8.Column sections 3 inside is connected with the first inside, support portion 8 by opening portion 8A (with reference to Fig. 3).On the top of column sections 3 rear wall parts, motor of sewing machine 19 is installed.It is inner that motor of sewing machine 19 is positioned at motor cover 13 (with reference to Fig. 1).The driving shaft 19A (with reference to Fig. 4) of motor of sewing machine 19 runs through the rear wall parts of column sections 3 and enters column sections 3 inside.Column sections 3 has opening portion 31 at the above-below direction central portion of left wall.Opening portion 31 is connected with column sections 3 inside.Column sections 3 has opening portion 32 below opening portion 31.Opening portion 32 is connected with column sections 3 inside.Opening portion 32 is greater than opening portion 31.Horn portion 4 forwards extends in the mode relative with support portion 2 from column sections 3 upper end.Upper axle 6 extends along the longitudinal direction in inside, horn portion 4 and column sections 3 inside.As shown in Figure 4, upper axle 6 is located on same axis with driving shaft 19A.Upper axle 6 rear end is connected with driving shaft 19A by joint 18.When motor of sewing machine 19 drives, upper axle 6 rotates integrally with driving shaft 19A.As shown in Figure 2, horn portion 4 has top ends 111 in leading section.Top ends 111 bottom is relative with needle plate 12 (with reference to Fig. 1).Top ends 111 comprises needle bar drive device 61 (with reference to Fig. 3), shank 62 and depression bar etc.Eedle 63 is arranged on shank 62 lower end.Eedle 63 has the pinprick run through for upper thread in top ends.Presser feet is connected with depression bar top.Needle bar drive device 61 is connected with upper axle 6 front end.Upper axle 6 drives needle bar drive device 61, thus shank 62 is moved up and down.
As Figure 1 and Figure 4, above support portion 2, cloth presser 93 is provided with.Cloth presser 93 is connected with cloth feeding mechanism 20.Cloth feeding mechanism 20 supports this cloth presser 93 can make cloth presser 93 along the mode of X-direction and Y direction movement.Cloth clamp can pressed between press box 94 and gripper frame 95 by cloth presser 93, and is remained on workbench 5 by this cloth.Cloth feeding mechanism 20 comprises X-axis travel mechanism and Y-axis moving mechanism 40.It is inner that X-axis travel mechanism is located at incorporating section 92, moves along X-direction for making cloth presser 93.X-axis travel mechanism has Y-axis mobile member up.Y-axis mobile member can move along Y direction, and this y-axis shift moves member supporting cloth presser 93.
Y-axis moving mechanism 40 comprises coupling member 41, leading axle 42, y-axis shift move motor 44 and rack shaft 43.Coupling member 41 is the tabular component extended in left-right direction, and its both ends, left and right forwards bend.Leading axle 42 is fixed at coupling member about 41 both ends.Leading axle 42 extends in left-right direction, and embeds arm 931 rearward end of cloth presser 93, and this leading axle 42 can guide cloth presser 93 to move along X-direction.Y-axis shift move motor 44 on the left of the first support portion 8 above to be located at opening portion 32 (with reference to Fig. 2) inner.The output shaft that y-axis shift moves motor 44 extends in left-right direction, and it is provided with pinion in right part.Pinion is meshed with the teeth portion 45 of rack shaft 43.Rack shaft 43 extends along the longitudinal direction, and its leading section is connected with the rear surface of coupling member 41.This rack shaft 43 can be supported along the mode of Y direction movement with rack shaft 43 in roughly columned support 51,52.Rack shaft 43 and support 51,52 are positioned at the left side of the left part position 99D of double cog belt 99.Rack shaft 43 and support 51,52 position in the lateral direction identical with lower shaft 7 position in the lateral direction with upper axle 6.Rack shaft 43 and support 51,52 are between upper shaft pulley 75 and lower shaft belt wheel 85.
When y-axis shift move motor 44 drive time, be located at y-axis shift and move pinion on the output shaft of motor 44 and rotate, rack shaft 43 moves along Y direction.Rack shaft 43 makes the arm 931 of cloth presser 93 move along Y direction by coupling member 41.
Cloth presser 93 comprise arm 931, frame support 932, linking part 933, by press box 94 and gripper frame 95.Arm 931 rearward end is enclosed within leading axle 42, and is fixed on Y-axis mobile member.Arm 931 bootstrap axle 42 is arc-shaped bend upward and forwards extends.Frame support 932 is fixed on arm 931 leading section.The board member of linking part 933 for during side-looking being word master L-shape, can be elevated along frame support 932.When overlooking for having by press box 94, the frame component of opening in the form of a substantially rectangular, is fixed on linking part 933 by the rearward end of press box 94.By press box 94 can with linking part 933 1 lifting.Gripper frame 95 is positioned at by below press box 94, and have shape with by the roughly the same opening of the opening shape of press box 94.The rearward end of gripper frame 95 is fixed on Y-axis mobile member.Cloth clamp can be held in by being remained on workbench 5 by this cloth between press box 94 and gripper frame 95 by cloth presser 93.
As shown in Figure 5, Figure 6, Sewing machines 1 comprises Poewr transmission mechanism 70.Poewr transmission mechanism 70 be for by the power transmission of motor of sewing machine 19 to the mechanism of lower shaft 7.The diagram of aftermentioned contact site 102 (with reference to Fig. 7) is eliminated in Fig. 5, Fig. 6.Poewr transmission mechanism 70 comprises shaft pulley 75, left shaft component 74, left belt wheel 71, right shaft component 78, right belt wheel 72, lower shaft belt wheel 85, counter wheel 73, supporting device 100 and double cog belt 99.It is inner that upper shaft pulley 75 is located at column sections 3 (with reference to Fig. 3) upper end.It is inner that left shaft component 74, left belt wheel 71, right shaft component 78, right belt wheel 72 and lower shaft belt wheel 85 are located at the first support portion 8 (with reference to Fig. 3).It is inner that counter wheel 73 and supporting device 100 are located at column sections 3.
Upper shaft pulley 75 is fixed on axle 6 rearward end on front side of joint 18.Upper shaft pulley 75 has the teeth portion 75A circumferentially formed at outer peripheral face.Left shaft component 74 is fixed on the first support portion 8 in lower shaft 7 left.Left shaft component 74 extends along the longitudinal direction, and the mode that can rotate with left belt wheel 71 supports this left belt wheel 71.Left shaft component 74 is parallel with lower shaft 7 with upper axle 6.Left belt wheel 71 is positioned at below on the left of shaft pulley 75.Left belt wheel 71 has the teeth portion 71A (with reference to Fig. 6) circumferentially formed at outer peripheral face.
Right shaft component 78 is fixed on the first support portion 8 in lower shaft 7 right.Right shaft component 78 extends along the longitudinal direction, and the mode that can rotate with right belt wheel 72 supports this right belt wheel 72.Right shaft component 78 is parallel with left shaft component 74, and is positioned at highly roughly the same position.Right belt wheel 72 is positioned on the right side of left belt wheel 71.Right belt wheel 72 has at outer peripheral face the teeth portion 72A circumferentially formed.Right belt wheel 72 is roughly the same with the size of left belt wheel 71.Lower shaft belt wheel 85 is fixed on lower shaft 7 rearward end.Lower shaft belt wheel 85 is taken turns between 72 at left belt wheel 71 and right belt.Lower shaft belt wheel 85 has the teeth portion 85A circumferentially formed at outer peripheral face.The number of teeth of teeth portion 85A is the half of the number of teeth of teeth portion 75A.That is, the diameter of lower shaft belt wheel 85 is the half of the diameter of upper shaft pulley 75, and two speeds of the rotating speed of lower shaft belt wheel more than 85 shaft pulley 75 rotate.As shown in Figure 6, teeth portion 85A lower end is positioned at the below of teeth portion 71A upper end.In other words, teeth portion 71A upper end is positioned at the top of teeth portion 85A lower end.
Counter wheel 73 is located between shaft pulley 75 and lower shaft belt wheel 85.Counter wheel 73 has the teeth portion 73A circumferentially formed at outer peripheral face.Supporting device 100 supports this counter wheel 73 in the mode that counter wheel 73 can rotate.Supporting device 100 can adjust the allocation position of counter wheel 73 in left-right direction.The detailed content of the structure of supporting device 100 sees below.
Double cog belt 99 is endless-belt.Double cog belt 99 comprises internal tooth 99A and external tooth 99B.Internal tooth 99A is the teeth portion of the inner surface being formed in double cog belt 99.External tooth 99B is the teeth portion of the outer surface being formed in double cog belt 99.A part of internal tooth 99A and external tooth 99B is illustrated in Fig. 6, Fig. 8.Double cog belt 99 to be meshed with teeth portion 71A, 72A, 75A with internal tooth 99A and the mode that is meshed with teeth portion 73A, 85A of external tooth 99B carries out establishing according to the order that upper shaft pulley 75, lower shaft belt wheel 85, left belt wheel 71, right belt take turns 72.Because teeth portion 71A upper end is positioned at than position by the top, teeth portion 85A lower end, therefore, increase to some extent compared with when the number of teeth that external tooth 99B and teeth portion 85A are meshed and teeth portion 71A upper end are positioned at the below of teeth portion 85A lower end.
Below, the position extended between the teeth portion 72A taking turns 72 in double cog belt 99 at the teeth portion 75A of upper shaft pulley 75 and right belt is called right part position 99C, the position extended between the teeth portion 75A of upper the shaft pulley 75 and teeth portion 85A of lower shaft belt wheel 85 in double cog belt 99 is called left part position 99D.The linearly extension of right part position 99C.Left part position 99D is meshed with the teeth portion 73A of counter wheel 73.The left end of teeth portion 73A is positioned at the side of the position 99C that keeps right of imaginary line 77.Imaginary line 77 is the imaginary line of the bearing of trend along left part position 99D.Therefore, left part position 99D becomes the mode of top ends to lateral bend in double cog belt 99 with the part be meshed with teeth portion 73A.Because left part position 99D is to lateral bend in double cog belt 99, therefore, it is possible to the number of teeth that increase teeth portion 75A is meshed with internal tooth 99A.Length on the bearing of trend of right part position 99C is greater than the length on the bearing of trend of left part position 99D.Left end due to teeth portion 73A is positioned at the side of the position 99C that keeps right of imaginary line 77, therefore, left part position 99D can not and rack shaft 43 between upper shaft pulley 75 and lower shaft belt wheel 85 and support 51,52 interfere with each other.
Be described with reference to Fig. 6, Fig. 7 structure to supporting device 100.Supporting device 100 comprises contact site 102, supporting member 104, shaft component 88 and two screw members 108.Contact site 102 is located at column sections 3 inside and is positioned at double cog belt 99 left back (with reference to Fig. 3).Contact site 102 is main apparent time tabular component in the form of a substantially rectangular, extends to the right from leading section, opening portion 31.Contact site 102 and leading section, opening portion 31 form as one.The rear surface 102A of contact site 102 is plane.Contact site 102 has two fastener holes 115 (with reference to Fig. 3).Two fastener holes 115 are rounded, run through contact site 102 along the longitudinal direction.One in two fastener holes 115 is formed in contact site 102 upper right quarter, and another one is formed in contact site 102 lower left quarter.
Supporting member 104 is that main apparent time extends and the right part bending tabular component extended to the right in left-right direction.Supporting member 104 left part is positioned at the rear of contact site 102 left part.Supporting member 104 right part is positioned at the right of contact site 102 right part.As shown in Figure 6, supporting member 104 has two elongated holes 105.Two elongated holes 105 are formed in the position relative with two of contact site 102 fastener holes 115 (with reference to Fig. 3).Two elongated holes 105 have major diameter in the lateral direction, and run through supporting member 104 along the longitudinal direction.The minor axis of each elongated hole 105 is a bit larger tham the internal diameter of each fastener hole 115.Shaft component 88 forwards extends from supporting member 104 right part.This counter wheel 73 is supported in the mode that counter wheel 73 can rotate in shaft component 88 leading section.As shown in Figure 6, Figure 7, two screw members 108 all have bar portion 108A and head 108B.Bar portion 108A runs through spring washer 112 and plain washer 114.Plain washer 114 is configured in spring washer 112 front.The external diameter of bar portion 108A is slightly smaller than the minor axis of elongated hole 105.Bar portion 108A runs through elongated hole 105 and is anchored on fastener hole 115 (with reference to Fig. 3).Head 108B is located at bar portion 108A rearward end.In other words, head 108B be located at bar portion 108A, for supporting member 104 end of the side that side residing with contact site 102 is contrary.The diameter of head 108B is greater than the minor axis of elongated hole 105.Be anchored in fastener hole 115 by operator by screw member 108, thus, supporting member 104 is fixed on the rear surface 102A of contact site 102.Now, head 108B forwards presses supporting member 104 rear surface across spring washer 112 and plain washer 114.Because plain washer 114 is between head 108B and supporting member 104, therefore, even if screw member 108 is firmly fastened to by operator, also not easily damage is produced by supporting member 104 rear surface that head 108B presses.Because spring washer 112 is between head 108B and supporting member 104, therefore, the screw member 108 after fastening not easily loosens.And, spring washer 112 and plain washer 114 also can not be set.
Be described with reference to the overview of Fig. 3 ~ Fig. 5 to the action of Sewing machines 1.When motor of sewing machine 19 drives, driving shaft 19A and upper axle 6 rotate to the clockwise direction of main apparent time (the arrow A direction in Fig. 5) integratedly.Upper axle 6 rotates, thus needle bar drive device 61 action, shank 62 moves up and down.Meanwhile, upper shaft pulley 75 action of axle 6 is fixed on.Double cog belt 99 is advanced to the clockwise direction of main apparent time (the arrow B direction in Fig. 5), thus left belt wheel 71, right belt wheel 72, lower shaft belt wheel 85 and counter wheel 73 rotate.That is, upper shaft pulley 75 is driving side belt wheel, and left belt wheel 71, right belt wheel 72, lower shaft belt wheel 85 and counter wheel 73 are slave end belt wheel.
Teeth portion 75A is meshed with internal tooth 99A (with reference to Fig. 6), and teeth portion 85A is meshed with external tooth 99B (with reference to Fig. 6).Therefore, lower shaft belt wheel 85 rotates to the direction contrary with the direction of rotation of upper shaft pulley 75.The number of teeth due to teeth portion 85A is the half of the number of teeth of teeth portion 75A, and therefore, two speeds of the rotating speed of lower shaft belt wheel more than 85 shaft pulley 75 rotate.Thus, double cog belt 99 makes shaft pulley 75 and lower shaft belt wheel 85 interlock.Lower shaft 7 rotates to the direction (the arrow C direction in Fig. 5) that main apparent time is counterclockwise.That is, motor of sewing machine 19 by upper axle 6 and Poewr transmission mechanism 70 by power transmission to lower shaft 7.Lower shaft 7 rotates, thus rotating shuttle 11 rotates.Eedle 63 runs through the cloth clamped by press box 94 and gripper frame 95 by cloth presser 93.Rotating shuttle 11 catches the upper thread ring near the pinprick being formed in eedle 63 in the below of cloth.After rotating shuttle 11 capture surface wire loop, eedle 63 moves to the top of cloth, and mentions upper thread.Therefore, eedle 63 mutually cooperates with rotating shuttle 11 and form needle tracking on cloth.Cloth feeding mechanism 20 makes the cloth kept by cloth presser 93 intermittently move along X-direction and Y direction in the mode synchronous with the driving of motor of sewing machine 19.Therefore, Sewing machines 1 can make the pattern of regulation on cloth.
Teeth portion 71A upper end is positioned at the top of teeth portion 85A lower end, thus the number of teeth that external tooth 99B is meshed with teeth portion 85A increases.Compared with when being positioned at below teeth portion 85A with teeth portion 71A upper end, double cog belt 99 can be allowed to be wound on teeth portion 85A.When to such as the thicker cloth such as seat harness, air bag cloth is made, when eedle 63 runs through cloth, have larger load and act on axle 6.Load via on shaft pulley 75 and double cog belt 99 be delivered to lower shaft belt wheel 85 time, double cog belt 99 also not easily occurs to jump tooth between teeth portion 85A and external tooth 99B.By increasing the number of teeth that external tooth 99B is meshed with teeth portion 85A, the load of each tooth acting on external tooth 99B can be reduced.Therefore, Sewing machines 1 not easily cracks at the tooth root place of external tooth 99B.
Because left part position 99D is to lateral bend in double cog belt 99, therefore, the number of teeth that the teeth portion 75A of upper shaft pulley 75 is meshed with internal tooth 99A increases.With left part position 99D not to lateral bend phase ratio in double cog belt 99, double cog belt 99 can be allowed to be wound on teeth portion 75A.Therefore, double cog belt 99 also not easily occurs to jump tooth between teeth portion 75A and internal tooth 99A.
The part (hereinafter referred to as line part) of linearly extension in the 99D of left part position, for counter wheel 73, is formed in upstream side and the downstream of the direct of travel of double cog belt 99.Line part between upper shaft pulley 75 and counter wheel 73 and the line part between counter wheel 73 and lower shaft belt wheel 85 are all short than imaginary line 77 (with reference to Fig. 6).Therefore, at double cog belt 99 when advancing, left part position 99D also not easily shakes.
Be described with reference to the method for adjustment of Fig. 8 to the allocation position of counter wheel 73.Operator by adjusting the allocation position of counter wheel 73 in left-right direction, can carry out corrective action in the tension force of double cog belt 99.Counter wheel 73 is illustrated briefly in Fig. 8.
Two screw members 108 are unscrewed by operator respectively.Each head 108B rearward leaves each spring washer 112 (with reference to Fig. 7).Two bar portion 108A support by two elongated holes, 105 pairs of supporting members 104.Supporting member 104 can move along the major diameter direction of elongated hole 105 and left and right directions.When operator makes supporting member 104 to time mobile near the direction (the arrow D direction in Fig. 8) of double cog belt 99, shaft component 88 moves to the right, counter wheel 73 residing that side pressing of position 99C to the right left part position 99D.Therefore, the tension force acting on double cog belt 99 increases.When operator makes supporting member 104 move to the direction (the arrow E direction in Fig. 8) away from double cog belt 99, shaft component 88 moves to the left.The power of counter wheel 73 residing that side pressing of position 99C to the right left part position 99D weakens.Therefore, the tension force acting on double cog belt 99 reduces.
Operator can by make supporting member 104 to the right or left move, increase or reduce to act on the tension force of double cog belt 99.Supporting member 104 is remained on the position that counter wheel 73 pairs of double cog belts 99 apply suitable tension force by operator, and respectively by fastening for two screw members 108.Thus, supporting member 104 is fixed on contact site 102.The double cog belt 99 being subject to the effect of suitable tension force normally can be advanced when there is jumping tooth.
As mentioned above, double cog belt 99 by making upper shaft pulley 75 and lower shaft belt wheel 85 interlock, thus makes axle 6 and lower shaft 7 interlock.The teeth portion 71A upper end of the left belt wheel 71 be meshed with double cog belt 99 is positioned at the top of the teeth portion 85A lower end of lower shaft belt wheel 85.Therefore, increase to some extent compared with when the number of teeth that is meshed of teeth portion 85A and external tooth 99B and teeth portion 71A upper end are positioned at the below of teeth portion 85A lower end.Compared with when being positioned at the below of teeth portion 85A lower end with teeth portion 71A upper end, double cog belt 99 can be allowed to be wound on teeth portion 85A.Therefore, when double cog belt 99 is advanced, double cog belt 99 not easily occurs to jump tooth between lower shaft belt wheel 85 and double cog belt 99.By increasing the number of teeth that is meshed with external tooth 99B of teeth portion 85A, can reducing effect in the load of each tooth of external tooth 99B, thus not easily to crack at the tooth root place of external tooth 99B.Therefore, it is possible to improve the durability of double cog belt 99.In the left part position 99D of double cog belt 99, the line part of linearly extension is formed in upstream side and the downstream of the direct of travel of double cog belt 99 for counter wheel 73.Because each line part is all short than imaginary line 77, therefore, double cog belt 99 is also not easily shaken when advancing.The double cog belt 99 of advancing not easily touches other parts (such as support 51, rack shaft 43 etc.) of Sewing machines 1.Therefore, not easily there is breakage, crack in double cog belt 99.Therefore, Sewing machines 1 can improve the durability of the double cog belt 99 making axle 6 and lower shaft 7 interlock, and double cog belt 99 can be suppressed to occur to jump tooth and shake.
The position that the teeth portion 73A of counter wheel 73 is meshed with the external tooth 99B of double cog belt 99 is in the side of the position 99C that keeps right of imaginary line 77.Therefore, left part position 99D is to lateral bend in double cog belt 99, therefore, it is possible to the number of teeth that increase internal tooth 99A is meshed with teeth portion 75A.Not easily occur to jump tooth between teeth portion 75A and internal tooth 99A.Therefore, Sewing machines 1 can suppress double cog belt 99 to occur to jump tooth further.
Motor of sewing machine 19 makes axle 6 and upper shaft pulley 75 rotate integrally, thus drives upper shaft pulley 75 to rotate.Drive left belt wheel 71 with motor of sewing machine 19, right belt is taken turns in 72 and counter wheel 73 any one time compared with, power transmission is easily given upper axle 6 and lower shaft 7 by motor of sewing machine 19.Therefore, Sewing machines 1 can make axle 6 and lower shaft 7 high-efficiency rotating.
Sewing machines 1 has supporting device 100, thus operator can adjust the allocation position of counter wheel 73 in left-right direction.In other words, operator can near or adjust upward the allocation position of counter wheel 73 away from the side of double cog belt 99.The allocation position of counter wheel 73 can be adjusted to the position that counter wheel 73 pairs of double cog belts 99 apply suitable tension force by operator.Therefore, Sewing machines 1 can suppress double cog belt 99 to occur to jump tooth further.
As long as two screw members 108 are unscrewed and moved supporting member 104 along the major diameter direction of elongated hole 105 and left and right directions by operator, the allocation position of counter wheel 73 just can be adjusted.Operator unscrews by means of only by two screw members 108, just can change the allocation position of counter wheel 73.Therefore, Sewing machines 1 can make the adjustment of the allocation position of counter wheel 73 comparatively easy.
In superincumbent explanation, motor of sewing machine 19 is equivalent to motor of the present utility model.Left shaft component 74 is equivalent to the first axle part of the present utility model.Left belt wheel 71 is equivalent to the first belt wheel of the present utility model.Right shaft component 78 is equivalent to the second axle part of the present utility model.Right belt wheel 72 is equivalent to the second belt wheel of the present utility model.Counter wheel 73 is equivalent to the 3rd belt wheel of the present utility model.Left part position 99D is equivalent to the first position of the present utility model, arbitrary position.Right part position 99C is equivalent to the second position of the present utility model, another position.Supporting device 100 is equivalent to position adjusting mechanism of the present utility model.Rear surface 102A is equivalent to plane of the present utility model.Teeth portion 71A is equivalent to the position be meshed with internal tooth of the present utility model.Teeth portion 85A is equivalent to the position be meshed with external tooth in lower shaft belt wheel of the present utility model.Teeth portion 73A is equivalent to the position be meshed with external tooth in the 3rd belt wheel of the present utility model.
The utility model is not limited to above-mentioned embodiment, can carry out various change.In the above-described embodiment, the left end of the teeth portion 73A of counter wheel 73 is configured in the side of the position 99C that keeps right of imaginary line 77, but, as long as a part for the right-hand member side of teeth portion 73A is configured in the side of the position 99C that keeps right of imaginary line 77.Now, as long as external tooth 99B is meshed in the side of the position 99C that keeps right of imaginary line 77 with teeth portion 73A, then left part position 99D is also to lateral bend in double cog belt 99.Therefore, the number of teeth that teeth portion 75A is meshed with internal tooth 99A increases.Sewing machines 1 can suppress double cog belt 99 to occur to jump tooth.
Also can be that motor of sewing machine 19 drives lower shaft belt wheel 85 to replace driving shaft pulley 75.Now, the driving shaft 19A of motor of sewing machine 19 is connected with lower shaft 7 by joint.Because motor of sewing machine 19 makes lower shaft 7 and lower shaft belt wheel 85 rotate integrally, therefore easily give upper axle 6 and lower shaft 7 by power transmission.Therefore, Sewing machines 1 can make axle 6 and lower shaft 7 high-efficiency rotating.
Also can be that Sewing machines 1 does not have supporting device 100.Now, it is inner that shaft component 88 is fixed on column sections 3, and support this counter wheel 73 in the mode that counter wheel 73 can rotate.Also can be, Sewing machines 1 have can near or direction away from double cog belt 99 on change the mechanism of the allocation position of any one in left belt wheel 71 and right belt wheel 72, replace supporting device 100.Now, as long as arrange the mechanism of the allocation position that can change left shaft component 74 or right shaft component 78.
Also can be that supporting member 104 is fixed on contact site 102 by the screw member 108 of more than three, replace being fixed on contact site 102 by two screw members 108.Now, as long as arrange the elongated hole 105 of supporting member 104 and the fastener hole 115 of contact site 102 accordingly with the screw member 108 of more than three.
Also can be that the counter wheel 73 of Poewr transmission mechanism 70 is not meshed with the external tooth 99B of left part position 99D.Be described with reference to the Poewr transmission mechanism 170 of Fig. 9 to the first variation of Poewr transmission mechanism 70.Poewr transmission mechanism 170 except have be different from contact site 102 contact site this point except, other structures are identical with the structure of Poewr transmission mechanism 70.In Poewr transmission mechanism 170, counter wheel 73 is meshed with internal tooth 99A.The left side being positioned at imaginary line 77 at least partially of the teeth portion 73A of counter wheel 73.Therefore, left part position 99D becomes the mode of top ends to the outer lateral bend of double cog belt 99 with the part be meshed with teeth portion 73A.Because left part position 99D is to the outer lateral bend of double cog belt 99, therefore, the number of teeth that teeth portion 85A is meshed with external tooth 99B increases.Counter wheel 73 is meshed with the internal tooth 99A of left part position 99D, thus the line part of left part position 99D is formed in upstream side and the downstream of the direct of travel of double cog belt 99 for counter wheel 73.Because each line part is all short than imaginary line 77, therefore, double cog belt 99 is also not easily shaken when advancing.And the fastener hole of the contact site of Poewr transmission mechanism 170 is positioned at the position of the side that to keep left than the fastener hole 115 of contact site 102.The supporting member 104 of Poewr transmission mechanism 170 is fixed on contact site by two screw members 108.Operator by being unscrewed by two screw members 108 and moving supporting member 104 in left-right direction, can carry out corrective action in the tension force of the double cog belt 99 of Poewr transmission mechanism 170.
Be described with reference to the Poewr transmission mechanism 270 of Figure 10 to the second variation of Poewr transmission mechanism 70.Poewr transmission mechanism 270 except have be different from contact site 102 contact site this point except, other structures are identical with the structure of Poewr transmission mechanism 70.In Poewr transmission mechanism 270, counter wheel 73 is meshed with the external tooth 99B of right part position 99C.The right-hand member of the teeth portion 73A of counter wheel 73 is positioned at the side of the position 99D that keeps left of imaginary line 277.Imaginary line 277 is the imaginary line of the bearing of trend along right part position 99C.Therefore, right part position 99C becomes the mode of top ends to lateral bend in double cog belt 99 with the part be meshed with teeth portion 73A.Because right part position 99C is to lateral bend in double cog belt 99, therefore, the number of teeth that teeth portion 75A is meshed with internal tooth 99A increases.In the 99C of right part position, the part of linearly extension is formed in upstream side and the downstream of the direct of travel of double cog belt 99 for counter wheel 73.Because each several part of linearly extension is all short than imaginary line 277, therefore, when double cog belt 99 is advanced, right part position 99C also not easily shakes.Right part position 99C is longer than left part position 99D.When not arranging counter wheel 73, when double cog belt 99 is advanced, right part position 99C easy shake compared with the 99D of left part position.But, be meshed by the external tooth 99B of counter wheel 73 with right part position 99C, thus right part position 99C not easily shakes.And the fastener hole of the contact site of Poewr transmission mechanism 270 is positioned at fastener hole 115 position on the right side than contact site 102.The supporting member 104 of Poewr transmission mechanism 270 is fixed on contact site by two screw members 108.Operator by being unscrewed by two screw members 108 and moving supporting member 104 in left-right direction, can carry out corrective action in the tension force of the double cog belt 99 of Poewr transmission mechanism 270.
Be described with reference to the Poewr transmission mechanism 370 of Figure 11 to the 3rd variation of Poewr transmission mechanism 70.Poewr transmission mechanism 370 except have be different from contact site 102 contact site this point except, other structures are identical with the structure of Poewr transmission mechanism 70.In Poewr transmission mechanism 370, counter wheel 73 is meshed with the internal tooth 99A of right part position 99C.The right side being positioned at imaginary line 277 at least partially of the teeth portion 73A of counter wheel 73.Therefore, right part position 99C becomes the mode of top ends to the outer lateral bend of double cog belt 99 with the part be meshed with teeth portion 73A.In the 99C of right part position, the part of linearly extension is formed in upstream side and the downstream of the direct of travel of double cog belt 99 for counter wheel 73.The each several part of linearly extension is all short than imaginary line 277, and therefore, when double cog belt 99 is advanced, right part position 99C also not easily shakes.And the fastener hole of the contact site of Poewr transmission mechanism 370 is positioned at fastener hole 115 position on the right side than contact site 102.The supporting member 104 of Poewr transmission mechanism 370 is fixed on contact site by two screw members 108.
Claims (4)
1. a Sewing machines, it comprises:
Upper shaft pulley (75), it is fixed on the upper axle (6) extended in the horizontal direction;
First belt wheel (71), it is supported by the first axle part (74), and this first axle part extends in the mode parallel with above-mentioned upper axle, above-mentioned first belt wheel be located at above-mentioned upper shaft pulley below and with above-mentioned on the side in the orthogonal direction of axle;
Second belt wheel (72), it is supported by the second axle part (78), this the second axle part is parallel with above-mentioned the first axle part and be positioned at the position identical with above-mentioned the first axle part height, and above-mentioned second belt wheel is located at the position by the opposite side in the direction orthogonal with above-mentioned upper axle for above-mentioned first belt wheel;
Lower shaft belt wheel (85), it is fixed on lower shaft (7), the downside of this lower shaft axle on above-mentioned with above-mentioned on the parallel mode of axle extend, above-mentioned lower shaft belt wheel is between above-mentioned first belt wheel and above-mentioned second belt wheel; And
Double cog belt (99), it is annular, and comprises internal tooth (99A) and external tooth (99B), and above-mentioned internal tooth is meshed with above-mentioned upper shaft pulley, above-mentioned first belt wheel and above-mentioned second belt wheel, aforementioned external teeth is meshed with above-mentioned lower shaft belt wheel
The feature of this Sewing machines (1) is,
Above-mentioned double cog belt carries out opening according to the order of above-mentioned upper shaft pulley, above-mentioned lower shaft belt wheel, above-mentioned first belt wheel and above-mentioned second belt wheel to be established,
This Sewing machines comprises the 3rd belt wheel (73), 3rd belt wheel is meshed with the arbitrary position in the first position (99D) in above-mentioned double cog belt and the second position (99C) these two positions, above-mentioned first position refers to the position extended between shaft pulley and above-mentioned lower shaft belt wheel on above-mentioned in above-mentioned double cog belt, above-mentioned second position refers to the position extended between shaft pulley and above-mentioned second belt wheel on above-mentioned in above-mentioned double cog belt
The position by the top, lower end than the position (85A) be meshed with aforementioned external teeth in above-mentioned lower shaft belt wheel is located in the upper end at the position (71A) be meshed with above-mentioned internal tooth in above-mentioned first belt wheel.
2. Sewing machines according to claim 1, is characterized in that,
Above-mentioned 3rd belt wheel is meshed with the aforementioned external teeth at the above-mentioned arbitrary position in above-mentioned first position and these two positions, above-mentioned second position,
The position be meshed with aforementioned external teeth in above-mentioned 3rd belt wheel at least partially, be positioned at for the imaginary line of the bearing of trend along above-mentioned arbitrary position, by the position of that side residing for another position in above-mentioned first position and these two positions, above-mentioned second position.
3. Sewing machines according to claim 1 and 2, is characterized in that,
This Sewing machines comprises position adjusting mechanism (100), this position adjusting mechanism supports above-mentioned 3rd belt wheel in the mode that above-mentioned 3rd belt wheel can rotate, and can near or direction away from above-mentioned double cog belt on change the allocation position of above-mentioned 3rd belt wheel.
4. Sewing machines according to claim 3, is characterized in that,
Above-mentioned position adjusting mechanism comprises:
Shaft component (88), it extends in the mode parallel with above-mentioned lower shaft, and supports above-mentioned 3rd belt wheel in the mode that above-mentioned 3rd belt wheel can rotate;
Supporting member (104), it is for supporting above-mentioned shaft component;
Contact site (102), the direction that its edge and above-mentioned shaft component intersect extends, and has the plane (102A) contacted with above-mentioned supporting member;
Multiple elongated hole (105), the plurality of elongated hole runs through above-mentioned supporting member along the bearing of trend of above-mentioned shaft component, and longer on the direction parallel with the bearing of trend of above-mentioned contact site;
Multiple fastener hole (115), the plurality of fastener hole is formed in the position relative with above-mentioned multiple elongated hole of above-mentioned contact site, and the internal diameter of above-mentioned fastener hole is less than the minor axis of above-mentioned elongated hole; And
Multiple screw member (108), the plurality of screw member has bar portion (108A) and head (108B) respectively, the end of that this head is located at above-mentioned bar portion, contrary with that side residing for above-mentioned contact site for above-mentioned supporting member side, the diameter of this head is greater than the minor axis of above-mentioned elongated hole, and the above-mentioned bar portion of above-mentioned multiple screw member runs through above-mentioned multiple elongated hole respectively and is anchored on above-mentioned multiple fastener hole.
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| JP2014-202449 | 2014-09-30 | ||
| JP2014202449A JP2016067758A (en) | 2014-09-30 | 2014-09-30 | sewing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774584A (en) * | 2021-10-27 | 2021-12-10 | 上海马钧智能科技有限公司 | Sewing machine and connecting piece thereof |
| CN114059240A (en) * | 2021-11-30 | 2022-02-18 | 湖南中锦服饰有限公司 | Garment processing device with sewing template |
| CN115142206A (en) * | 2021-03-31 | 2022-10-04 | 本田技研工业株式会社 | Sewing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7015095B2 (en) * | 2018-03-07 | 2022-02-02 | 株式会社ジャガーインターナショナルコーポレーション | Sewing machine needle hook timing adjustment device |
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2014
- 2014-09-30 JP JP2014202449A patent/JP2016067758A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142206A (en) * | 2021-03-31 | 2022-10-04 | 本田技研工业株式会社 | Sewing device |
| US11851794B2 (en) | 2021-03-31 | 2023-12-26 | Honda Motor Co., Ltd. | Sewing device |
| CN113774584A (en) * | 2021-10-27 | 2021-12-10 | 上海马钧智能科技有限公司 | Sewing machine and connecting piece thereof |
| CN114059240A (en) * | 2021-11-30 | 2022-02-18 | 湖南中锦服饰有限公司 | Garment processing device with sewing template |
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