Synchronous belt tensioning adjusting structure of cloth dragging wheel device and cloth dragging wheel device

Abstract

The utility model provides a synchronous belt tension adjusting structure of a cloth dragging wheel device and the cloth dragging wheel device, and belongs to the technical field of sewing machine parts. The first motor is provided with a second connecting part and a rotatable driving wheel, and the second connecting part is movably connected with the first connecting part, so that the position of the first motor relative to the base is adjustable; the two ends of the synchronous belt are arranged on the driven wheel and the driving wheel in a sleeving mode respectively, and the first motor can drive the driving wheel to rotate so as to drive the driven wheel to rotate through the synchronous belt. The synchronous belt tensioning device has the beneficial effects that the second connecting part of the motor is movably connected with the first connecting part of the base, so that the position of the first motor relative to the base is adjustable, the synchronous adjustment of the tensioning state of the synchronous belt is realized by changing the center distance between the driven wheel and the driving wheel, and an additional structure is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machine parts and relates to a synchronous belt tensioning adjustment structure of a cloth-pulling wheel device and a cloth-pulling wheel device. Background Art

[0002] The (rear drag mechanism) drag wheel drive mechanism currently used in sewing machines usually includes a motor, a first synchronous pulley, a synchronous belt, a second synchronous pulley and a drag wheel assembly. The center distance between the two synchronous pulleys is fixed, and the tension of the synchronous belt is guaranteed by the center distance between the two synchronous pulleys.

[0003] For example, a utility model patent with application number CN201320369128.6 provides a synchronous belt tensioning mechanism for controlling the lifting of a mop wheel. This is to overcome the problems of complex structure, high precision of parts processing and high production cost in the prior art. The technical solution of the utility model is: it includes a motor, a first synchronous pulley, a synchronous belt, a second synchronous pulley, a synchronous belt tensioning mechanism and a mop wheel assembly, the mop wheel assembly includes a mop wheel frame, the synchronous belt tensioning mechanism includes a swing rod, a pair of needle roller bearing assemblies, a connecting rod and a swing rod seat, one end of the swing rod is a double fork structure, a pair of needle roller bearing assemblies are arranged between the ends of the double fork structure, and the pair of needle roller bearing assemblies are respectively pressed on the synchronous belt, the other end of the swing rod is hinged on the swing rod seat, and a connecting rod is hinged between the middle part of the swing rod and the mop wheel frame.

[0004] In summary, although some existing technical solutions can control the tension and swing angle of the synchronous belt by rotating the needle bearing on the pin shaft, other components need to be added and the structure is relatively complex, leaving much room for improvement. Summary of the invention

[0005] The utility model aims to solve the above problems in the prior art and proposes a synchronous belt tensioning adjustment structure of a mopping wheel device and a mopping wheel device.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a synchronous belt tensioning and adjusting structure of a mopping wheel device, comprising:

[0007] A base, which is provided with a first connecting portion and a rotatable driven wheel;

[0008] A first motor is provided with a second connecting portion and a rotatable driving wheel, wherein the second connecting portion is movably connected to the first connecting portion so that the position of the first motor relative to the base is adjustable;

[0009] The two ends of the synchronous belt are respectively mounted on the driven wheel and the driving wheel. The first motor can drive the driving wheel to rotate, thereby driving the driven wheel to rotate through the synchronous belt. When the position of the first motor relative to the base is adjusted, the tension state of the synchronous belt is synchronously adjusted.

[0010] In the above-mentioned synchronous belt tensioning adjustment structure of a mop wheel device, it also includes a first connecting screw, the first connecting part is a connecting waist hole, the second connecting part is a first connecting screw hole, the first connecting screw can move along the length direction of the connecting waist hole and can pass through the connecting waist hole to connect with the first connecting screw hole.

[0011] In the above-mentioned synchronous belt tensioning and adjusting structure of the mopping wheel device, the connecting waist holes are distributed along the height direction of the base.

[0012] In the above-mentioned synchronous belt tensioning adjustment structure of a mop wheel device, the first motor is also provided with a connecting plate, the connecting plate is located between the base and the first motor, the first motor is connected to the base through the connecting plate, and the second connecting part is located on the connecting plate.

[0013] In the above-mentioned synchronous belt tensioning adjustment structure of a mop wheel device, it also includes a second connecting screw, the first motor is also provided with a connecting through hole, the connecting plate is provided with a second connecting screw hole, and the second connecting screw can pass through the connecting through hole and connect with the second connecting screw hole.

[0014] In the above-mentioned synchronous belt tensioning adjustment structure of a mop wheel device, it also includes a second motor and a connecting component, the second motor is connected to the base, the second motor is provided with an eccentric wheel, the base is also provided with a rotatable adjusting arm, the two ends of the connecting component are eccentrically connected to the eccentric wheel and the adjusting arm respectively, the driven wheel is provided on the adjusting arm, the second motor can drive the eccentric wheel to rotate, thereby driving the adjusting arm to rotate through the connecting component, and the driven wheel is provided on the adjusting arm.

[0015] In the above-mentioned synchronous belt tensioning adjustment structure of a mop wheel device, the connecting assembly includes a first connecting member, a second connecting member and a connecting rod, the first connecting member is rotatably connected to one of the eccentric wheel and the adjusting arm, the first connecting member is rotatably connected to the other of the eccentric wheel and the adjusting arm, one end of the connecting rod is rotatably connected to the first connecting member, and the other end of the connecting rod is threadedly connected to the second connecting member.

[0016] In the above-mentioned synchronous belt tensioning and adjusting structure of the mopping wheel device, the connecting assembly further comprises a spring, the spring is sleeved on the connecting rod, and two ends of the spring are respectively in contact with the first connecting member and the second connecting member.

[0017] Secondly, a mop wheel device includes the synchronous belt tensioning and adjusting structure of the mop wheel device.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The second connecting part of the motor can be movably connected to the first connecting part of the base so that the position of the first motor relative to the base can be adjusted, and then the tension state of the synchronous belt can be synchronously adjusted by changing the center distance between the driven wheel and the driving wheel, without the need for additional structure, which is simple and convenient.

[0020] 2. The first connecting screw can move along the length direction of the connecting waist hole when not tightened, and can pass through the connecting waist hole to connect with the first connecting screw hole when tightened, thereby easily changing the center distance between the driven wheel and the driving wheel.

[0021] 3. The first motor is connected to the base through a connecting plate and the first connecting screw hole is located on the connecting plate. When the first connecting screw hole is damaged due to frequent adjustment, only the connecting plate connected to the first motor needs to be replaced without replacing the first motor, thereby increasing the service life of the synchronous belt tensioning adjustment structure of the mop wheel device.

[0022] 4. The second connecting screw can pass through the connecting through hole and connect with the second connecting screw hole so that the first motor and the connecting plate can be detachably connected.

[0023] 5. The second motor can drive the eccentric wheel to rotate, thereby driving the adjusting arm to rotate through the connecting assembly, so that the rotation of the second motor can drive the adjusting arm to be lifted or lowered relative to the base.

[0024] 6. One end of the connecting rod is rotatably connected to the first connecting member, and the other end of the connecting rod is threadedly connected to the second connecting member, so that the initial angular position of the adjusting arm relative to the base can be changed.

[0025] 7. Both ends of the spring are in contact with the first connecting member and the second connecting member respectively, thereby pushing the first connecting member and the second connecting member away from each other, so that the connecting assembly is in a taut state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the synchronous belt tensioning and adjusting structure of the mopping wheel device of the utility model.

[0027] Figure 2 It is an exploded view of the synchronous belt tensioning and adjusting structure of the mopping wheel device of the utility model.

[0028] Figure 3 It is a left view of the synchronous belt tensioning and adjusting structure of the mopping wheel device of the utility model.

[0029] Figure 4 It is a front view of the synchronous belt tensioning and adjusting structure of the mopping wheel device of the utility model.

[0030] Figure 5 for Figure 4 Cross-sectional view from AA perspective.

[0031] In the figure, 100, base; 110; connecting waist hole; 120, driven wheel; 130, adjusting arm; 200, first motor; 210, connecting plate; 211, first connecting screw hole; 212, second connecting screw hole; 220, driving wheel; 230, connecting through hole; 300, synchronous belt; 400, second motor; 410, eccentric wheel; 500, connecting assembly; 510, first connecting member; 520, second connecting member; 530, connecting rod; 540, spring. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] like Figure 1-Figure 5 As shown, a synchronous belt tensioning and adjusting structure of a mopping wheel device includes: a base 100, a first motor 200 and a synchronous belt 300.

[0039] The base 100 is provided with a first connecting portion and a rotatable driven wheel 120 .

[0040] The first motor 200 is provided with a second connection portion and a rotatable driving wheel 220 , and the second connection portion is movably connected to the first connection portion so that the position of the first motor 200 relative to the base 100 is adjustable.

[0041] Among them, the two ends of the synchronous belt 300 are respectively mounted on the driven wheel 120 and the driving wheel 220, and the first motor 200 can drive the driving wheel 220 to rotate, thereby driving the driven wheel 120 to rotate through the synchronous belt 300. When the position of the first motor 200 relative to the base 100 is adjusted, the tension state of the synchronous belt 300 is synchronously adjusted.

[0042] In this embodiment, the second connecting portion of the motor can be movably connected to the first connecting portion of the base 100 so that the position of the first motor 200 relative to the base 100 can be adjusted, and then the tensioning state of the synchronous belt 300 can be synchronously adjusted by changing the center distance between the driven wheel 120 and the driving wheel 220, without the need for additional structures, which is simple and convenient.

[0043] like Figure 1-Figure 5 As shown, on the basis of the above embodiment, it also includes a first connecting screw, the first connecting part is a connecting waist hole 110, the second connecting part is a first connecting screw hole 211, the first connecting screw can move along the length direction of the connecting waist hole 110 and can pass through the connecting waist hole 110 to connect with the first connecting screw hole 211.

[0044] In this embodiment, the first connecting screw can move along the length direction of the connecting waist hole 110 when not tightened, and can pass through the connecting waist hole 110 and connect with the first connecting screw hole 211 when tightened, thereby easily changing the center distance between the driven wheel 120 and the driving wheel 220.

[0045] Specifically, the connecting waist holes 110 are distributed along the height direction of the base 100 .

[0046] like Figure 1-Figure 5 As shown, based on the above embodiment, the first motor 200 is also provided with a connecting plate 210, and the connecting plate 210 is located between the base 100 and the first motor 200, the first motor 200 is connected to the base 100 through the connecting plate 210, and the second connecting part is located on the connecting plate 210.

[0047] In this embodiment, the first motor 200 is connected to the base 100 through the connecting plate 210 and the first connecting screw hole 211 is located on the connecting plate 210. When frequent adjustment is required and the first connecting screw hole 211 is damaged, only the connecting plate 210 connected to the first motor 200 needs to be replaced without replacing the first motor 200, thereby increasing the service life of the synchronous belt tensioning adjustment structure of the mop wheel device.

[0048] like Figure 1-Figure 5 As shown, based on the above embodiment, it also includes a second connecting screw, the first motor 200 is also provided with a connecting through hole 230, the connecting plate 210 is provided with a second connecting screw hole 212, and the second connecting screw can pass through the connecting through hole 230 and connect with the second connecting screw hole 212.

[0049] In this embodiment, the second connecting screw can pass through the connecting through hole 230 and connect with the second connecting screw hole 212 so that the first motor 200 and the connecting plate 210 can be detachably connected.

[0050] like Figure 1-Figure 5 As shown, on the basis of the above embodiment, it also includes a second motor 400 and a connecting component 500, the second motor 400 is connected to the base 100, the second motor 400 is provided with an eccentric wheel 410, the base 100 is also provided with a rotatable adjusting arm 130, the two ends of the connecting component 500 are eccentrically connected to the eccentric wheel 410 and the adjusting arm 130 respectively, the driven wheel 120 is provided on the adjusting arm 130, the second motor 400 can drive the eccentric wheel 410 to rotate, thereby driving the adjusting arm 130 to rotate through the connecting component 500, and the driven wheel 120 is provided on the adjusting arm 130.

[0051] In this embodiment, the second motor 400 can drive the eccentric wheel 410 to rotate, thereby driving the adjustment arm 130 to rotate through the connecting assembly 500, so that the rotation of the second motor 400 can drive the adjustment arm 130 to be lifted or lowered relative to the base 100.

[0052] like Figure 1-Figure 5 As shown, based on the above embodiment, the connecting assembly 500 includes a first connecting member 510, a second connecting member 520 and a connecting rod 530, the first connecting member 510 is rotatably connected to one of the eccentric wheel 410 and the adjusting arm 130, the first connecting member 510 is rotatably connected to the other of the eccentric wheel 410 and the adjusting arm 130, one end of the connecting rod 530 is rotatably connected to the first connecting member 510, and the other end of the connecting rod 530 is threadedly connected to the second connecting member 520.

[0053] In this embodiment, one end of the connecting rod 530 is rotatably connected to the first connecting member 510 , and the other end of the connecting rod 530 is threadedly connected to the second connecting member 520 , so that the initial angular position of the adjusting arm 130 relative to the base 100 can be changed.

[0054] like Figure 1-Figure 5 As shown, based on the above embodiment, the connecting assembly 500 further includes a spring 540 , and the spring 540 is sleeved on the connecting rod 530 , and two ends of the spring 540 are in contact with the first connecting member 510 and the second connecting member 520 respectively.

[0055] In this embodiment, two ends of the spring 540 are in contact with the first connecting member 510 and the second connecting member 520 respectively, thereby pushing the first connecting member 510 and the second connecting member 520 away from each other, so that the connecting assembly 500 is in a tightened state.

[0056] Secondly, a mop wheel device includes the synchronous belt tensioning and adjusting structure of the mop wheel device.

Claims

1. A synchronous belt tensioning and adjusting structure of a mopping wheel device, characterized in that: include: A base, which is provided with a first connecting portion and a rotatable driven wheel; A first motor is provided with a second connecting portion and a rotatable driving wheel, wherein the second connecting portion is movably connected to the first connecting portion so that the position of the first motor relative to the base is adjustable; The two ends of the synchronous belt are respectively mounted on the driven wheel and the driving wheel. The first motor can drive the driving wheel to rotate, thereby driving the driven wheel to rotate through the synchronous belt. When the position of the first motor relative to the base is adjusted, the tension state of the synchronous belt is synchronously adjusted.

2. The synchronous belt tensioning adjustment structure of the mopping wheel device according to claim 1, characterized in that: It also includes a first connecting screw, the first connecting part is a connecting waist hole, the second connecting part is a first connecting screw hole, the first connecting screw can move along the length direction of the connecting waist hole and can pass through the connecting waist hole to connect with the first connecting screw hole.

3. The synchronous belt tensioning adjustment structure of the mopping wheel device according to claim 2, characterized in that: The connecting waist holes are distributed along the height direction of the base.

4. The synchronous belt tensioning adjustment structure of the mopping wheel device according to claim 1, characterized in that: The first motor is further provided with a connecting plate, and the connecting plate is located between the base and the first motor. The first motor is connected to the base via the connecting plate, and the second connecting portion is located on the connecting plate.

5. The synchronous belt tensioning adjustment structure of the mopping wheel device according to claim 4, characterized in that: It also includes a second connecting screw, the first motor is also provided with a connecting through hole, the connecting plate is provided with a second connecting screw hole, and the second connecting screw can pass through the connecting through hole and connect with the second connecting screw hole.

6. The synchronous belt tensioning and adjusting structure of the mopping wheel device according to claim 1, characterized in that: It also includes a second motor and a connecting component, the second motor is connected to the base, the second motor is provided with an eccentric wheel, the base is also provided with a rotatable adjusting arm, the two ends of the connecting component are eccentrically connected to the eccentric wheel and the adjusting arm respectively, the driven wheel is provided on the adjusting arm, the second motor can drive the eccentric wheel to rotate, thereby driving the adjusting arm to rotate through the connecting component, and the driven wheel is provided on the adjusting arm.

7. The synchronous belt tensioning adjustment structure of the mopping wheel device according to claim 6, characterized in that: The connecting assembly includes a first connecting member, a second connecting member and a connecting rod, the first connecting member is rotatably connected to one of the eccentric wheel and the adjusting arm, the first connecting member is rotatably connected to the other of the eccentric wheel and the adjusting arm, one end of the connecting rod is rotatably connected to the first connecting member, and the other end of the connecting rod is threadedly connected to the second connecting member.

8. The synchronous belt tensioning and adjusting structure of the mopping wheel device according to claim 7, characterized in that: The connecting assembly further comprises a spring, wherein the spring is sleeved on the connecting rod, and two ends of the spring are respectively in contact with the first connecting member and the second connecting member.

9. A mop wheel device, characterized in that: It comprises a synchronous belt tensioning and adjusting structure of a mopping wheel device as claimed in any one of claims 1 to 8.

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