Pedal device and sewing machine

Abstract

The utility model discloses a pedal device and a sewing machine, which comprises a fixing frame, a first pedal, a control switch and a second pedal, the first pedal is rotatably connected with the fixing frame, and the first pedal is provided with a treading surface; the control switch is arranged on the first pedal; the second pedal is movably connected with the first pedal, and the second pedal covers part of the treading surface; the second pedal is provided with a first position and a second position relative to the first pedal, and when the second pedal is located at the first position, the control switch is in an off state; when the pedal is located at the second position, the second pedal makes contact with the control switch, the control switch is in a closed state, different functions are started by stepping on different areas with feet, the two different functions can also be started at the same time, and the two hands of an operator are liberated.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field, concretely relates to a pedal device and have pedal device's sewing machine. BACKGROUND

[0002] The existing sewing machine needs the operating personnel to operate when starting some mechanism to open some functions, for example, when switching normal sewing and reverse sewing, the operating personnel needs to free one hand to operate, and the other hand of the operating personnel still needs to correct the sewing material, when the sewing process is simple, the operating personnel can still be taken care of, but when the sewing process is complex, the operating personnel often has difficulty in taking care of both ends. SUMMARY

[0003] The utility model discloses a new pedal device.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a pedal device, which comprises:

[0005] A fixed frame;

[0006] A first pedal is rotatably connected with the fixed frame, and the first pedal has a tread surface;

[0007] A control switch is arranged on the first pedal;

[0008] A second pedal is movably connected with the first pedal, and the second pedal covers part of the tread surface; the second pedal has a first position and a second position relative to the first pedal, when being in the first position, the control switch is in an open state; when being in the second position, the second pedal is in contact with the control switch, and the control switch is in a closed state.

[0009] In some embodiments, the second pedal can be arranged on the first pedal in a relative rotation manner.

[0010] In some embodiments, when the second pedal moves from the first position to the second position, the second pedal is closer to the first pedal.

[0011] In some embodiments, the second pedal has an abutting surface facing the first pedal, when the second pedal is in the first position, the abutting surface is arranged in a spaced manner with the tread surface; when the second pedal is in the second position, the abutting surface abuts against the tread surface.

[0012] In some embodiments, when the second pedal is in the first position, an angle A between the abutting surface and the tread surface is an acute angle, and the angle A is 1-10 degrees.

[0013] In some embodiments, the second pedal is provided with a limiting structure, and the first pedal is provided with a limiting surface facing away from the tread surface, and the limiting structure abuts against the limiting surface when the second pedal is in the first position.

[0014] In some embodiments, the second pedal comprises a plate body covering part of the tread surface, and the limiting structure extends downward from one side of the plate body and bends toward the first pedal.

[0015] In some embodiments, the first pedal is provided with a main body part and a mounting rack fixedly connected to one side of the main body part, the control switch is fixed on the mounting rack, and the limiting surface is arranged on the side of the mounting rack facing away from the tread surface, and the limiting structure abuts against the mounting rack when the second pedal is in the first position.

[0016] In some embodiments, the first pedal is provided with a limiting groove, one side groove wall of the limiting groove constitutes the limiting surface, and the limiting structure is movably inserted into the limiting groove.

[0017] In some embodiments, the pedal device is provided with an elastic member for providing the force required to drive the second pedal to move to the first position.

[0018] In some embodiments, the first pedal is rotatably connected to the fixed frame around a rotation center line, and the second pedal is rotatably connected to the first pedal around the rotation center line.

[0019] In some embodiments, the control switch comprises a control button, at least part of the control button extends above the tread surface, and the second pedal is folded relative to the tread surface when the second pedal is in the second position.

[0020] Another object of the present application is to provide a sewing machine.

[0021] To achieve the above object, the present application adopts the technical scheme of a sewing machine comprising the above pedal device.

[0022] In some embodiments, the sewing machine comprises a reverse sewing mechanism and a control system, the control switch and the control system are electrically connected, and the control system and the reverse sewing mechanism are electrically connected.

[0023] In some embodiments, the sewing machine includes a feed dog, the backstitching mechanism includes a motor and a linkage component, the motor is electrically connected to the control system, and the linkage component is disposed between the feed dog and the motor, so that the action of the motor can be transmitted to the feed dog through the linkage component.

[0024] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The sewing machine of this utility model has a pedal device including a first pedal and a second pedal. When the operator steps on the area of ​​the first pedal's tread surface not covered by the second pedal, the first pedal can be driven to rotate relative to the fixed frame without disturbing the second pedal, allowing the first pedal to work independently. Simultaneously, the operator can also use their foot to drive the second pedal from the first position to the second position, thereby turning the control switch into a closed state, thus activating some mechanisms and functions of the sewing machine. Even after the operator uses the second pedal to drive the control switch to close, the first pedal can still be driven to rotate, thus achieving synchronous operation of multiple mechanisms without requiring the operator to stop their work to free up one hand for operation, greatly reducing the difficulty and intensity of operation. Attached Figure Description

[0025] Appendix Figure 1 This is a schematic diagram of a sewing machine according to a specific embodiment of the present utility model;

[0026] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the middle section structure;

[0027] Appendix Figure 3 This is a schematic diagram of a pedal device according to a specific embodiment of the present invention;

[0028] Appendix Figure 4 For the appendix Figure 3 A diagram from another perspective;

[0029] Appendix Figure 5 For the appendix Figure 3 A diagram from a third-person perspective;

[0030] Appendix Figure 6 For the appendix Figure 5 A diagram showing the pedal after removal;

[0031] Appendix Figure 7 For the appendix Figure 6 Enlarged view of point A in the middle;

[0032] Appendix Figure 8 For the appendix Figure 5 Enlarged schematic diagram of the middle section structure;

[0033] Appendix Figure 9 This is a three-dimensional schematic diagram of the second pedal;

[0034] Appendix Figure 10 A three-dimensional schematic diagram of the mounting bracket;

[0035] The components are as follows: 100, pedal device; 1, fixing frame; 11, base frame; 12, support frame; 13, slide groove; 2, first pedal; 21, step surface; 22, main body; 23, mounting frame; 24, connecting part; 3, control switch; 31, control button; 4, second pedal; 41, plate body; 42, limiting structure; 43, abutting surface; 44, connecting piece; 441, first extension section; 442, second extension section; 443, third extension section; 5, elastic element; 6, shaft screw; 200, sewing machine body; 201, control system; 202, motor; 203, linkage assembly; 204, feed dog; 205, connecting piece. Detailed Implementation

[0036] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments, so that the advantages and features of this utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0037] The following descriptions of directions such as up, down, left, right, front, back, inside, and outside are all defined with reference to the directions observed by the operator while using the sewing machine. Please refer to the appendix for details. Figure 1 The coordinate system in the diagram is intended only to facilitate the description of the relative positional relationships between the various parts of the sewing machine, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0038] See Figure 1 The sewing machine shown includes a sewing machine body 200 and a pedal device 100. The pedal device 100 controls the start and stop of the sewing machine body 200 and also controls the sewing speed. See also Figures 3 to 5The shown pedal device 100 comprises a fixed frame 1, a first pedal 2, a control switch 3 and a second pedal 4. The first pedal 2 is rotatably connected with the fixed frame 1, and the first pedal 2 has a tread surface 21 for an operator to step on. The control switch 3 is arranged on the first pedal 2 and has two states of opening and closing. The second pedal 4 is movably connected with the first pedal 2, and the second pedal 4 covers part of the tread surface 21. The second pedal 4 has a first position and a second position relative to the first pedal 2. When the second pedal 4 is at the first position, the control switch 3 is in the opening state. When the second pedal 4 is at the second position, the second pedal 4 contacts the control switch 3, and the control switch 3 is in the closing state. The operator can drive the control switch 3 to switch to the closing state by driving the second pedal 4 to move from the first position to the second position with the foot.

[0039] In the embodiment, the first pedal 2 is connected with the sewing machine body 200 through the connecting piece 205, and the first pedal 2 has the function of a normal sewing machine pedal, i.e., the first pedal 2 can control the start and stop of the sewing machine body 200 and the sewing speed. The operator steps on the area of the tread surface 21 not covered by the second pedal 4 to drive the first pedal 2 to rotate relative to the fixed frame 1, thereby performing the above-mentioned operation of controlling the start and stop and the sewing speed. The sewing machine is provided with a control system 201, and the control switch 3 is electrically connected with the control system 201, and the control system 201 is electrically connected with other operating mechanisms. Therefore, when the operator wants to start the operating mechanism, the operator only needs to drive the second pedal 4 to move from the first position to the second position with the foot, so that the control switch 3 is switched to the closing state. In this way, the hands of the operator are freed, and the operation difficulty of the operator is reduced.

[0040] In the embodiment, the second pedal 4 can be arranged on the first pedal 2 in a rotatable manner, and the operator only needs to drive the second pedal 4 to rotate relative to the first pedal 2 to switch the second pedal 4 between the first position and the second position, thereby switching the control switch 3 between the opening state and the closing state.

[0041] In the embodiment, when the second pedal 4 moves from the first position to the second position, the second pedal 4 is close to the first pedal 2. In the embodiment, the control switch 3 comprises a control button 31, and at least part of the control button 31 extends above the tread surface 21. The second pedal 4 is above the control button 31, and when the second pedal 4 is at the second position, the second pedal 4 is close to the tread surface 21, thereby pressing the control button 31 to switch the control switch 3 to the closing state.

[0042] Specifically, the second pedal 4 has an abutting surface 43 facing the first pedal 2, when the second pedal 4 is in the first position, the abutting surface 43 is spaced apart from the treading surface 21, when the second pedal 4 is in the second position, the abutting surface 43 abuts against the treading surface 21. In this way, after the second pedal 4 is switched to the second position, the first pedal 2 and the second pedal 4 are folded towards each other, at this time, the operator can drive the first pedal 2 to rotate by treading the second pedal 4, thereby maintaining the control switch 3 in the closed state to control the start and stop of the sewing machine main body 200 or adjust the sewing speed, realizing the synchronous operation of multiple functions, and the operation difficulty is low, even if the operation time is long, the operation strength is also small.

[0043] In the embodiment, the first pedal 2 is rotatably connected to the fixed frame 1 about the rotation center line X, preferably, the rotation center line X extends in the horizontal direction. Specifically, the fixed frame 1 includes a base frame 11 and a support frame 12 fixedly arranged on the base frame 11, the base frame 11 is supported on the ground, the support frame 12 is arranged on the upper part of the base frame 11, and the support frame 12 includes two support frames 12 arranged in parallel. The first pedal 2 includes a main body 22 and two connecting parts 24 arranged on different sides of the main body 22 along the length direction of the base frame 11, and the two connecting parts 24 are rotatably connected to the two support frames 12 about the rotation center line X.

[0044] In the embodiment, the length extension direction of the base frame 11 and the extension direction of the rotation center line X are parallel to each other, specifically, the base frame 11 and the rotation center line X both extend in the left-right direction, and the two support frames 12 are arranged in parallel along the length extension direction of the base frame 11. In the embodiment, different sides of the main body 22 are provided with downwardly extending flanges, and the flanges constitute the above-mentioned connecting parts 24. In the embodiment, as shown in Figure 3 , Figure 4 The base frame 11 is provided with a sliding groove 13 extending along the length direction of the base frame 11, the two support frames 12 are inserted into the sliding groove 13, and a locking mechanism is arranged between the support frame 12 and the sliding groove 13. When the locking mechanism is in the unlocked state, the support frame 12 can slide along the sliding groove 13, so that the position of the first pedal 2 on the fixed frame 1 can be adjusted.

[0045] In the embodiment, the second pedal 4 is rotatably connected to the first pedal 2 about the rotation center line X, specifically, as shown in Figure 9 The second pedal 4 includes a plate main body 41 and a connecting part 44, the connecting part 44 is fixedly connected to the plate main body 41, the connecting part 44 is rotatably connected to the first pedal 2, or the connecting part 44 is rotatably connected to the support frame 12. In the embodiment, the connecting part 44 is integrally formed with the plate main body 41, the connecting part 44 extends downward from one side of the plate main body 41, and the connecting part 44 is rotatably connected to one of the connecting parts 24 of the first pedal 2 about the rotation center line X.

[0046] In the embodiment, the connecting part 24 of the first pedal 2 is rotatably connected with the support frame 12 through the shaft position screw 6, and the shaft center line of the shaft position screw 6 extends in line with the rotation center line. The connecting part 44 of the second pedal 4 is rotatably connected with the first pedal 2 through the shaft position screw 6.

[0047] In the embodiment, as shown in Figure 3 , Figure 5 When the second pedal 4 is installed on the first pedal 2, at least part of the connecting part 44 is located outside the connecting part 24. Specifically, as shown in Figure 9 The connecting part 44 is in the shape of U, which has a first extension segment 441 and a second extension segment 442 arranged in the extension direction of the rotation center line X. The first extension segment 441 and the second extension segment 442 are respectively sleeved on the shaft position screw 6, which improves the relative stability between the first pedal 2 and the second pedal 4. The connecting part 44 further includes a third extension segment 443. The first extension segment 441 extends downward from one side of the plate body 41, the third extension segment 443 extends from the lower part of the first extension segment 441 in the extension direction of the rotation center line X, and the second extension segment 442 extends upward from the third extension segment 443. The first extension segment 441 and the second extension segment 442 are arranged on both sides of one of the connecting parts 24 in the extension direction of the rotation center line.

[0048] In the embodiment, the pedal device is provided with the elastic member 5, which is used to provide the force required to drive the second pedal 4 to move to the first position. In the absence of external force, the second pedal 4 can automatically move to the first position, and the second pedal 4 can be maintained in the first position under the action of the elastic member 5, so that the control switch 3 remains in the off state. The elastic member 5 also provides resistance to the movement of the second pedal 4 to the second position, thereby playing a certain anti-misoperation function. In the embodiment, the elastic member 5 is arranged between the first pedal 2 and the second pedal 4, and is used to drive the second pedal 4 to rotate relative to the first pedal 2 and move away from the first pedal 2. Specifically, the elastic member 5 is a spring arranged between the second pedal 4 and the first pedal 2. In other embodiments, the elastic member 5 can also be a torsion spring or other element capable of providing a driving force to move the second pedal 4 and capable of elastic deformation. In other embodiments, the second pedal 4 itself has elasticity, so that it automatically moves to the first position under the action of its own elasticity.

[0049] In the embodiment, the second pedal 4 is provided with the limiting structure 42, and the first pedal 2 has a limiting surface facing away from the tread surface 21. When the second pedal 4 is in the first position, the limiting structure 42 abuts against the limiting surface, so that the second pedal 4 is accurately maintained in the first position. Through the cooperation between the limiting structure 42 and the limiting surface, it can be prevented that the second pedal 4 moves out of range when moving from the second position to the first position.

[0050] In the embodiment, when the second pedal 4 is in the first position, the abutting surface 43 and the tread surface 21 form an included angle A, and the included angle A is an acute angle. In some preferred embodiments, the included angle A is 1°-10°. Controlling the included angle A within the above range can ensure that the second pedal 4 does not trigger the control switch 3 when the second pedal 4 is in the first position, and the stroke of the second pedal 4 moving to the second position is appropriate, facilitating the operation of the operator. Through the cooperation between the limiting structure 42 and the limiting surface, the included angle A can be kept at a preset angle or within a preset angle range.

[0051] In the embodiment, the second pedal 4 comprises a plate body 41, the plate body 41 covers part of the tread surface 21, and the limiting structure 42 extends downward from one side of the plate body 41 and bends toward the first pedal 2. As shown in Figure 9 , the limiting structure 42 is integrally arranged with the plate body 41, specifically, the limiting structure 42 is an L-shaped folded edge located on one side of the plate body 41, and when the first pedal 2 is in the first position, the bent section at the lower part of the limiting structure 42 abuts against the limiting surface.

[0052] In the embodiment, referring to Figure 6 , Figure 7 , Figure 10 , the first pedal 2 further comprises a mounting bracket 23 fixedly connected to one side of the main body part 22, the control switch 3 is fixed on the mounting bracket 23, the plate body 41 covers the mounting bracket 23 from above, and the elastic member 5 is arranged between the mounting bracket 23 and the plate body 41 of the second pedal 4. In the embodiment, the limiting surface is arranged on the side of the mounting bracket 23 away from the tread surface 21, and when the second pedal 4 is in the first position, the limiting structure 42 abuts against the mounting bracket 23. As shown in Figure 8 , the second pedal 4 surrounds the peripheral side of the mounting bracket 23, thereby protecting the control switch 3 and the elastic member 5 arranged on the mounting bracket 23 from external disturbances.

[0053] In some embodiments, the first pedal 2 is provided with a limiting groove, one side groove wall of the limiting groove constitutes the limiting surface, and the limiting structure 42 is movably inserted into the limiting groove, and when the limiting structure 42 abuts against the groove wall of the limiting groove, the limiting of the second pedal 4 is formed.

[0054] In the embodiment, referring to Figure 1 , the second pedal 4 is arranged on the right side of the first pedal 2, specifically, the second pedal 4 covers the right front corner of the tread surface 21, the first extension section 441 of the connecting member 44 is located on the right side of the first pedal 2, the mounting bracket 23 is fixed on the front side of the main body part 22 of the first pedal 2, and the limiting structure 42 of the second pedal 4 is arranged on the front side of the plate body 41.

[0055] In the embodiment, the left half of the tread surface 21 is the uncovered area. When the control switch 3 is not needed to be closed, the operator steps on the left half of the tread surface 21 to drive the first pedal 2 to rotate. When the control switch 3 is needed to be closed, the operator moves his foot to the right half of the tread surface 21 or steps on the right half of the tread surface 21 with the right foot, and steps on the second pedal 4, so that the second pedal 4 moves towards the first pedal 2 and is switched to the second position, and finally the first pedal 2 and the second pedal 4 abut against each other. At this time, if the sewing speed is needed to be adjusted, the first pedal 2 and the second pedal 4 are kept abutting against each other, and the second pedal 4 is continuously stepped on, or the first pedal 2 and the second pedal 4 are stepped on, so that the first pedal 2 rotates.

[0056] In the embodiment, the sewing machine body 200 comprises a reverse sewing mechanism for controlling the switching between the forward sewing mode and the reverse sewing mode. The control system 201 and the reverse sewing mechanism are electrically connected, and the switching between the forward sewing mode and the reverse sewing mode of the sewing machine can be realized by driving the second pedal 4 to switch between the first position and the second position. Specifically, referring to FIG. 2, the sewing machine body 200 comprises a feeding tooth 204, and the reverse sewing mechanism comprises a motor 202 and a linkage assembly 203. The motor 202 is electrically connected with the control system 201, and the linkage assembly 203 is arranged between the motor 202 and the feeding tooth 204, so that the action of the motor 202 can be transmitted to the feeding tooth 204 through the linkage assembly 203, thereby the switching between the forward sewing mode and the reverse sewing mode is realized by controlling the motor 202. Figure 2

[0057] In the embodiment, when the sewing machine is in the forward sewing mode, the operator steps on the area of the tread surface 21 which is not covered by the second pedal 4 to perform the sewing operation, i.e. the left half. When the reverse sewing operation is needed, the operator steps on the second pedal 4 to move it to the second position, and steps on the first pedal 2 to drive it to rotate. After the second pedal 4 moves to the second position, the control switch 3 is switched to the closed state and sends a signal to the control system, the control system sends a signal to the motor 202, the motor 202 is started, and the linkage assembly 203 transmits the action of the motor 202 to the feeding tooth 204, so that the moving direction or the moving track of the feeding tooth 204 is changed.

[0058] In summary, the sewing machine of the embodiment can separately drive the first pedal 2 to work, and realize the control of the start and stop of the sewing machine and the sewing speed. At the same time, the second pedal 4 is stepped on to switch the control switch 3 to the closed state, so that the reverse sewing mechanism is driven to work, and the hands of the operator are freed, so that the operator can concentrate on ensuring the sewing quality, the operation difficulty of the operator is reduced, and the sewing quality can be ensured.

[0059] ​The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A pedal device characterized by: The pedal device comprises: a fixed frame; a first pedal rotatably connected with the fixed frame, the first pedal having a tread surface; a control switch arranged on the first pedal; a second pedal movably connected with the first pedal, the second pedal covering part of the tread surface; the second pedal having a first position and a second position relative to the first pedal, when in the first position, the control switch is in an open state; when in the second position, the second pedal is in contact with the control switch, and the control switch is in a closed state.

2. The pedal device of claim 1, wherein: The second pedal can be arranged on the first pedal in a relative rotation manner.

3. The pedal device of claim 2, wherein: When the second pedal moves from the first position to the second position, the second pedal is closer to the first pedal.

4. A pedal device according to claim 2 or 3, characterised in that: The second pedal has an abutting surface facing the first pedal, when the second pedal is in the first position, the abutting surface is arranged in a spaced manner relative to the tread surface; when the second pedal is in the second position, the abutting surface abuts against the tread surface.

5. The pedal device of claim 4, wherein: When the second pedal is in the first position, an included angle A is formed between the abutting surface and the tread surface, the included angle A is an acute angle, and the included angle A is 1°-10°.

6. A pedal device according to claim 2 or 3, characterised in that: The second pedal is provided with a limiting structure, and the first pedal has a limiting surface away from the tread surface, when the second pedal is in the first position, the limiting structure abuts against the limiting surface.

7. The pedal device of claim 6, wherein: The second pedal comprises a plate body, the plate body covers part of the tread surface, and the limiting structure extends downward from one side of the plate body and is bent toward the first pedal; and / or, the first pedal has a main body part and a mounting frame fixedly connected to one side of the main body part, the control switch is fixed on the mounting frame, and the limiting surface is arranged on one side of the mounting frame away from the tread surface, when the second pedal is in the first position, the limiting structure abuts against the mounting frame; and / or, the first pedal is provided with a limiting groove, one side groove wall of the limiting groove constitutes the limiting surface, and the limiting structure is movably inserted into the limiting groove.

8. The pedal device of claim 1, wherein: The pedal device is provided with an elastic member, and the elastic member is used to provide an acting force required for driving the second pedal to move to the first position; and / or, the first pedal is rotatably connected with the fixed frame around a rotation center line, and the second pedal is rotatably connected with the first pedal around the rotation center line; and / or, the control switch comprises a control button, at least part of the control button extends above the tread surface, and when the second pedal is in the second position, the second pedal is closer to the tread surface.

9. A sewing machine characterized by: The sewing machine comprises a pedal device as claimed in any one of claims 1-8.

10. The sewing machine of claim 9, wherein: The sewing machine comprises a control system and a reverse sewing mechanism, the control switch is electrically connected with the control system, and the control system is electrically connected with the reverse sewing mechanism. The sewing machine comprises a feeding tooth, the backstitch mechanism comprises a motor and a linkage assembly, the motor is electrically connected with the control system, and the linkage assembly is arranged between the feeding tooth and the motor, so that the action of the motor can be transmitted to the feeding tooth through the linkage assembly.

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