Sewing machine and button clamp lifting plate device thereof

Abstract

The utility model discloses a sewing machine and a button clamp lifting plate device thereof, the button clamp lifting plate device comprises a first lifting plate assembly and a second lifting plate assembly, the first lifting plate assembly comprises a first grabbing foot lifting plate and a rolling piece, and the rolling piece comprises an outer rolling body and an inner rolling body which can rotate relatively; the first grabbing foot lifting plate is provided with a first mounting position for assembling the outer rolling body, so that the outer rolling body is fixedly connected to the first grabbing foot lifting plate; the second lifting plate assembly comprises a second grabbing foot lifting plate and a connecting piece which are fixedly connected, and the connecting piece is fixedly connected to the inner rolling body, so that the first grabbing foot lifting plate and the second grabbing foot lifting plate can rotate relatively, contact abrasion between the first grabbing foot lifting plate and the second grabbing foot lifting plate can be relieved or even avoided, and a gap is avoided; and the working precision and the service life of the button clamp lifting plate device of the sewing machine are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field, especially a sewing machine and button forceps lifting plate device thereof. BACKGROUND

[0002] The button forceps lifting plate device of the existing sewing machine is limited by the contact between parts, adopts connecting rod transmission, and the connecting rods are relatively rotated by the connecting shaft, which aggravates the wear of the connecting rod and easily causes gap, affecting the transmission accuracy of the connecting rod, especially the back and forth rotating action of the lifting plate of the button forceps clamping device around the rotating center shaft, which accelerates the wear between the lifting plate and the rotating shaft, resulting in needle breakage during button sewing.

[0003] Therefore, how to slow down or even avoid the contact wear between parts to improve the working accuracy and service life of the button forceps lifting plate device of the sewing machine is a technical problem to be solved by the person skilled in the art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sewing machine and button forceps lifting plate device, which can slow down or even avoid the contact wear between parts to improve the working accuracy and service life of the button forceps lifting plate device of the sewing machine.

[0005] To achieve the above-mentioned purpose, the utility model provides a button forceps lifting plate device, which comprises:

[0006] The first lifting plate assembly comprises a first toe lifting plate and a rolling part, the rolling part comprises an outer rolling body and an inner rolling body capable of relative rotation, the first toe lifting plate is provided with a first mounting position for assembling the outer rolling body, so that the outer rolling body is fixedly connected to the first toe lifting plate;

[0007] The second lifting plate assembly comprises a second toe lifting plate and a connecting part fixedly connected, the connecting part is fixedly connected to the inner rolling body, so that the first toe lifting plate and the second toe lifting plate can relatively rotate.

[0008] Preferably, the first toe lifting plate comprises a first plate body and two supporting ears, the two supporting ears are spaced apart and connected to the same side of the first plate body, a first through hole is formed on each supporting ear to form a first mounting position, and each supporting ear is provided with an abutting end face on the side away from the other;

[0009] The outer periphery of the outer rolling body is provided with a first stop ring, the outer rolling body is in interference fit with the corresponding first through hole, and the first stop ring abuts against the abutting end face.

[0010] Preferably, the second gripper lifting plate comprises a second plate body and a fixing seat arranged on one side of the second plate body, and the fixing seat is provided with a second through hole, the connecting piece is arranged in the second through hole, and the connecting piece comprises a connecting piece body in the second through hole and an extension part extending out of the second through hole to be connected with the inner rolling body, and the fixing seat is provided with a first fixing part capable of abutting against the connecting piece body to limit rotation of the connecting piece body relative to the second through hole.

[0011] Preferably, the inner rolling body comprises a first boss protruding from the support ear, the first boss is located on a side away from the two support ears, and a second fixing part is arranged in the circumferential direction of the first boss to fixedly connect the extension part arranged in the inner rolling body with the inner rolling body.

[0012] Preferably, the inner rolling body further comprises a second boss protruding from the support ear, the second boss is located between the two support ears, and the second boss abuts against a side of the fixing seat facing the support ear, so that the support ear and the fixing seat are arranged in a gap.

[0013] Preferably, the axis of the first through hole is parallel to the first plate body, the axis of the second through hole is parallel to the second plate body, and the axes of the first through hole and the second through hole are collinear after the first gripper lifting plate and the second gripper lifting plate are connected.

[0014] Preferably, a first threaded hole is arranged on the fixing seat and is communicated with the second through hole, and the first fixing part is screwed into the second through hole to abut against the connecting piece body.

[0015] A second threaded hole is arranged in the circumferential direction of the first boss and is communicated with the inside of the first boss, and the second fixing part is screwed into the inside of the first boss to abut against the extension part.

[0016] Preferably, the first fixing part is provided with a first abutting plane capable of abutting against the connecting piece body, and / or the second fixing part is provided with a second abutting plane capable of abutting against the extension part; and / or,

[0017] The connecting piece body is provided with a first groove for clamping the end part of the first fixing part, and / or the extension part is provided with a second groove for clamping the end part of the second fixing part.

[0018] Preferably, the rolling piece is of an integrated structure.

[0019] A sewing machine comprising the above button clamp lifting plate device.

[0020] With respect to the above background art, the button forceps lifting plate device provided by the utility model, comprising a first lifting plate assembly and a second lifting plate assembly, the first lifting plate assembly comprises a first claw foot lifting plate and a rolling piece, the rolling piece comprises an outer rolling body and an inner rolling body capable of relative rotation, the first claw foot lifting plate is provided with a first mounting position for assembling the outer rolling body, so that the outer rolling body is fixedly connected to the first claw foot lifting plate; the second lifting plate assembly comprises a second claw foot lifting plate and a connecting piece fixedly connected, the connecting piece is fixedly connected to the inner rolling body, so that the first claw foot lifting plate and the second claw foot lifting plate can relatively rotate.

[0021] The rolling piece is arranged between the first claw foot lifting plate and the second claw foot lifting plate, the rolling piece comprises an outer rolling body and an inner rolling body capable of relative rotation, the first claw foot lifting plate is fixedly connected with the outer rolling body, and the second claw foot lifting plate is fixedly connected with the inner rolling body through the connecting piece, so that only the outer rolling body and the inner rolling body are relatively rotated and rubbed when the first claw foot lifting plate and the second claw foot lifting plate relatively rotate, the friction loss caused by the relative rotation between the first claw foot lifting plate and the second claw foot lifting plate, between the first claw foot lifting plate and the outer rolling body and between the second claw foot lifting plate and the inner rolling body is avoided, the contact abrasion between the first claw foot lifting plate and the second claw foot lifting plate can be slowed down or even avoided, the gap is avoided, and therefore the working precision and service life of the button forceps lifting plate device of the sewing machine are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and other drawings can be obtained by the provided drawings without creative labor for the ordinary skilled in the art.

[0023] Figure 1 The structural schematic diagram of the button forceps lifting plate device provided by the embodiments of the utility model;

[0024] Figure 2 The button forceps lifting plate device provided by the embodiments of the utility model is an explosion diagram.

[0025] Among them:

[0026] 100-first claw foot lifting plate, 110-first plate body, 120-supporting ear, 121-first through hole;

[0027] 200-rolling piece, 210-outer rolling body, 211-first stop ring, 221-first boss, 222-second boss, 223-second threaded hole;

[0028] 300 - second gripper lifting plate, 310 - second plate body, 320 - fixing seat, 321 - second through hole, 322 - first threaded hole;

[0029] 400 - adapter;

[0030] 500 - first fixing member;

[0031] 600 - second fixing member. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0034] In the description of the present application, it should be understood that the positions or location relationships indicated by the terms "inner", "outer" and the like are based on the positions or location relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the positions or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0035] The purpose of the present application is to provide a sewing machine and a button clamp lifting plate device, which can slow down or even avoid the contact wear between parts and parts, so as to improve the working precision and service life of the button clamp lifting plate device of the sewing machine.

[0036] Please refer to Figure 1 and Figure 2 In order to achieve the above purpose, the present application provides a button clamp lifting plate device, which comprises a first lifting plate assembly and a second lifting plate assembly.

[0037] The first lifting plate assembly comprises a first gripper lifting plate 100 and a rolling member 200, and the rolling member 200 comprises an outer rolling body 210 and an inner rolling body capable of relative rotation. The first gripper lifting plate 100 is provided with a first mounting position for assembling the outer rolling body 210, so that the outer rolling body 210 is fixedly connected to the first gripper lifting plate 100. The first gripper lifting plate 100 and the outer rolling body 210 can be regarded as a whole synchronous movement.

[0038] The rolling member 200 is of an integrated structure, for example, the rolling member 200 can be an integrated bearing, the outer rolling body 210 is a bearing outer ring, and the inner rolling body is a bearing inner ring. The integrated bearing has a simple structure, reduces the difficulty of manufacturing and maintenance, and only needs to be installed once without the need for disassembly and assembly, thereby reducing the installation time.

[0039] The second lifting plate assembly includes a second toe lifting plate 300 and a connecting piece 400 fixedly connected to the inner rolling body. The first toe lifting plate 100 and the second toe lifting plate 300 can rotate relative to each other. The second toe lifting plate 300 and the inner rolling body can be regarded as a whole that moves synchronously.

[0040] The rolling member 200 is arranged between the first toe lifting plate 100 and the second toe lifting plate 300. The rolling member 200 includes an outer rolling body 210 and an inner rolling body that can rotate relative to each other. The first toe lifting plate 100 is fixedly connected to the outer rolling body 210, and the second toe lifting plate 300 is fixedly connected to the inner rolling body through the connecting piece 400. When the first toe lifting plate 100 and the second toe lifting plate 300 rotate relative to each other, only the outer rolling body 210 and the inner rolling body rotate relative to each other and rub, thereby avoiding the friction loss caused by the relative rotation between the first toe lifting plate 100 and the second toe lifting plate 300, the relative rotation between the first toe lifting plate 100 and the outer rolling body 210, and the relative rotation between the second toe lifting plate 300 and the inner rolling body. The contact wear between the first toe lifting plate 100 and the second toe lifting plate 300 can be slowed down or even avoided, the gap can be avoided, and the working precision and service life of the thimble lifting plate device of the sewing machine can be improved.

[0041] In some embodiments, the first toe lifting plate 100 includes a first plate body 110 and two support ears 120. The two support ears 120 are arranged at intervals and connected to the same side of the first plate body 110. The two support ears 120 are parallel to each other, and each of the support ears 120 is provided with a first through hole 121 to form a first mounting position. The two support ears 120 are each provided with an abutting end face on the side opposite to each other. The outer rolling body 210 is provided with a first blocking ring 211 at one end thereof. The outer rolling body 210 is in interference fit with the corresponding first through hole 121, and the first blocking ring 211 abuts against the abutting end face.

[0042] The outer rolling body 210 can be press-fitted into the first through hole 121 through the first blocking ring 211, and whether the outer rolling body 210 is installed in place can be known through the fit of the first blocking ring 211 and the abutting end face. The thickness of the first blocking ring 211 on the axis of the outer rolling body 210 is 0.1 to 0.3 times the thickness of the outer rolling body 210 on its own axis, so as to ensure that the first blocking ring 211 has a certain structural strength, facilitating the installation process, and at the same time, the fit of the first blocking ring 211 and the abutting end face can increase the friction when the outer rolling body 210 and the abutting end face have a relative movement tendency, and increase the stability of the interference fit of the outer rolling body 210 and the first through hole 121. The length of the outer rolling body 210 in the axial direction should be greater than or equal to the length of the first through hole 121 in the axial direction of the outer rolling body 210.

[0043] In some embodiments, the second grip foot lifting plate 300 comprises a second plate body 310 and a fixing seat 320, the fixing seat 320 is arranged on one side of the second plate body 310, and the fixing seat 320 is provided with a second through hole 321, the adapter 400 is arranged in the second through hole 321, and the adapter 400 comprises an adapter body located in the second through hole 321 and an extension part extending out of the second through hole 321 to connect the inner rolling body, and the fixing seat 320 is provided with a first fixing part 500 capable of abutting against the adapter body to limit the rotation of the adapter body relative to the second through hole 321.

[0044] The adapter 400 can adopt a columnar structure or a rod-like structure capable of being arranged in the second through hole 321. Taking the second through hole 321 as a circular through hole, when the adapter 400 is in a rod-like structure, the adapter 400 is arranged in the second through hole 321 and then fixed, the circumferential surface of the adapter 400 is locked by the first fixing part 500 connected to the fixing seat 320 to limit the rotation of the adapter body relative to the second through hole 321, so that the adapter 400 and the second grip foot lifting plate 300 are fixed firmly.

[0045] The adapter 400 comprises an adapter body located in the second through hole 321 and an extension part extending out of the second through hole 321 to connect the inner rolling body, the adapter body is adapted to the second through hole 321, and the extension part is adapted to the inner rolling body, the cross-sectional shape and cross-sectional area of the adapter body and the extension part can also be different from each other, for example, the cross section of the adapter body perpendicular to the axis of the second through hole 321 is square, the cross section of the extension part perpendicular to the axis of the second through hole 321 is circular, and the cross-sectional area of the adapter body is greater than that of the extension part, which can facilitate the fixing between the first fixing part 500 and the adapter body. In addition, the adapter 400 can also adopt a cylindrical shaft structure, and the position of the adapter 400 installed in the second through hole 321 is marked in advance according to the size of the fixing seat 320, so that the lengths of the extension parts at both ends of the mounting seat are consistent, facilitating subsequent assembly.

[0046] It can be understood that the inner rolling body includes a first boss 221 protruding from the support lug 120, the first boss 221 is located on the side away from the two support lugs 120, and the circumference of the first boss 221 is provided with a second fixing member 600 for fixedly connecting the extension of the inner rolling body, specifically, the rolling member 200 is assembled with the first grab foot lifting plate 100, so that the rolling member 200 is located at a predetermined position, then the second grab foot lifting plate 300 is placed corresponding to the first grab foot lifting plate 100, the adapter 400 is threaded through one inner rolling body and then threaded into the second through hole 321 of the fixed seat 320, and then threaded into the other inner rolling body, the adapter body of the adapter 400 is fixed by the first fixing member 500, the extension is fixed by the second fixing member 600, and the inner rolling body and the second grab foot lifting plate 300 are fixed as a synchronous motion whole through the adaptation of the adapter 400.

[0047] It should be noted that the inner rolling body further includes a second boss 222 protruding from the support lug 120, the second boss 222 is located between the two support lugs 120, and the second boss 222 abuts against the side of the fixed seat 320 facing the support lug 120, so that the support lug 120 and the fixed seat 320 are gap arranged, and at the same time, the second boss 222 makes the inner rolling body directly contact with the second grab foot lifting plate 300, limits the movement of the second grab foot lifting plate 300 along the axial direction of the adapter 400, and enhances the stability of the connection between the second grab foot lifting plate 300 and the inner rolling body.

[0048] The axis of the first through hole 121 is parallel to the first plate body 110, the axis of the second through hole 321 is parallel to the second plate body 310, and the axes of the first through hole 121 and the second through hole 321 are collinear after the first grab foot lifting plate 100 and the second grab foot lifting plate 300 are connected, and the axes of the first through hole 121 and the second through hole 321 are consistent with the axis of the adapter 400, so that the first grab foot lifting plate 100 can be rotated around the axis subsequently, and the second plate body 310 is provided with a avoiding position to ensure that the support lug 120 does not directly contact with the second plate body 310 during the rotation of the first grab foot lifting plate 100.

[0049] In addition, the fixed seat 320 is provided with a first threaded hole 322, the first threaded hole 322 is communicated with the second through hole 321, and the first threaded hole 322 is used for rotating the first fixing member 500 into the second through hole 321 to abut against the adapter body; the circumference of the first boss 221 is provided with a second threaded hole 223, the second threaded hole 223 is communicated with the inside of the first boss 221, and the second threaded hole 223 is used for rotating the second fixing member 600 into the inside of the first boss 221 to abut against the extension.

[0050] The first fixing member 500 and the second fixing member 600 can be screws, etc., and the first fixing member 500 and the second fixing member 600 are screwed into the corresponding threaded holes at the same torque, so that the adapter 400 is in force balance, the first threaded hole 322 on the fixing seat 320 is uniformly arranged along the axial direction of the adapter 400, and the second threaded hole 223 is uniformly arranged along the circumferential direction of the first boss 221.

[0051] In some other embodiments, the first fixing member 500 is provided with a first abutting plane capable of abutting against the adapter body, and / or the second fixing member 600 is provided with a second abutting plane capable of abutting against the extension, and / or the adapter body is provided with a first groove for clamping the end of the first fixing member 500, and / or the extension is provided with a second groove for clamping the end of the second fixing member 600.

[0052] The first groove and the first threaded hole 322 correspond one-to-one, and the second groove and the second threaded hole 223 correspond one-to-one, so that when the first fixing member 500 is screwed into the first threaded hole 322, it is clamped into the first groove, and when the second fixing member 600 is screwed into the second threaded hole 223, it is clamped into the second groove, so as to fix the adapter 400.

[0053] In addition, a sewing machine comprising the above-mentioned buttonhole lifter device also has the beneficial effects of the above-mentioned buttonhole lifter device, which will not be described here.

[0054] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.

[0055] The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between various embodiments can be referred to each other.

[0056] The principle and implementation mode of the present application are described by using specific examples in the present specification, and the above description of the embodiments is only used to help understand the method and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A button elevator plate device, characterized by, The button forceps lifting plate device comprises a first lifting plate assembly and a second lifting plate assembly. The first lifting plate assembly comprises a first foot lifting plate (100) and a rolling member (200), the rolling member (200) comprises an outer rolling body (210) and an inner rolling body capable of relative rotation, and the first foot lifting plate (100) is provided with a first mounting position for assembling the outer rolling body (210) so that the outer rolling body (210) is fixedly connected to the first foot lifting plate (100). The second lifting plate assembly comprises a second foot lifting plate (300) and a connecting member (400) fixedly connected, and the connecting member (400) is fixedly connected to the inner rolling body so that the first foot lifting plate (100) and the second foot lifting plate (300) can rotate relative to each other.

2. The button forceps lifting plate device according to claim 1, wherein the first foot lifting plate (100) comprises a first plate body (110) and two support ears (120), the two support ears (120) are spaced apart and connected to the same side of the first plate body (110), the support ears (120) are each provided with a first through hole (121) to form the first mounting position, and the support ears (120) are each provided with an abutting end face on the side away from each other. The outer periphery of the outer rolling body (210) is provided with a first blocking ring (211), the outer rolling body (210) is in interference fit with the corresponding first through hole (121), and the first blocking ring (211) abuts against the abutting end face.

3. The button forceps lifting plate device according to claim 2, wherein the second foot lifting plate (300) comprises a second plate body (310) and a fixing seat (320), the fixing seat (320) is arranged on one side of the second plate body (310), the fixing seat (320) is provided with a second through hole (321), the connecting member (400) is arranged in the second through hole (321), the connecting member (400) comprises a connecting member body located in the second through hole (321) and an extension part extending out of the second through hole (321) to connect the inner rolling body, and the fixing seat (320) is provided with a first fixing member (500) capable of abutting against the connecting member body to limit the rotation of the connecting member body relative to the second through hole (321).

4. The button forceps lifting plate device according to claim 3, wherein the inner rolling body comprises a first boss (221) protruding from the support ear (120), the first boss (221) is located on the side away from each other of the two support ears (120), and the circumferential direction of the first boss (221) is provided with a second fixing member (600) for fixedly connecting the extension part arranged in the inner rolling body with the inner rolling body.

5. The button forceps lifting plate device according to claim 4, wherein ​ ​ ​ The inner rolling body further comprises a second boss (222) protruding from the support ear (120), the second boss (222) is located between the two support ears (120), and the second boss (222) abuts one side of the fixed seat (320) towards the support ear (120), so that the support ear (120) and the fixed seat (320) are arranged in a gap.

6. The button elevator as claimed in claim 4, wherein, The axis of the first through hole (121) is parallel to the first plate body (110), the axis of the second through hole (321) is parallel to the second plate body (310), and the axes of the first through hole (121) and the second through hole (321) are collinear after the first and second lifting plates (100, 300) are connected.

7. The button elevator as claimed in claim 4, wherein, The fixed seat (320) is provided with a first threaded hole (322) that is in communication with the second through hole (321) and is used for the first fixing member (500) to be screwed into the second through hole (321) to abut the connecting member body; The first boss (221) is provided with a second threaded hole (223) in the circumferential direction, the second threaded hole (223) is in communication with the inside of the first boss (221), and the second fixing member (600) is screwed into the inside of the first boss (221) to abut the extension.

8. The button elevator as claimed in claim 7, wherein, The first fixing member (500) is provided with a first abutting plane that can abut the connecting member body, and / or the second fixing member (600) is provided with a second abutting plane that can abut the extension; and / or The connecting member body is provided with a first groove for the end of the first fixing member (500) to be clamped into, and / or the extension is provided with a second groove for the end of the second fixing member (600) to be clamped into.

9. The button elevator as claimed in any one of claims 1-8, wherein, The rolling member (200) is of an integrated structure.

10. A sewing machine characterized by comprising: The button elevator as claimed in any one of claims 1-9.

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