An electronic wrench assembly for a sewing machine

Abstract

This utility model discloses an electronic wrench assembly for a sewing machine, including a switch body with a button box fixed on it. A circuit board is fixed to the button box, and a stitch length adjustment switch and a reverse stitch switch are slidably disposed thereon. A first magnetic induction sensor and a second magnetic induction sensor are integrated on the circuit board. A first magnet, movable relative to the first magnetic induction sensor and with a changing position, is fixed to the stitch length adjustment switch. A second magnet, movable relative to the second magnetic induction sensor and with a changing position, is fixed to the reverse stitch switch. Both the first and second magnetic induction sensors are connected to the signal input terminal of a controller, and the signal output terminal of the controller is connected to the feed motor of the sewing machine. This utility model integrates the reverse stitch switch and the stitch length adjustment switch into the same electronic wrench assembly, thus improving the overall integration of the sewing machine.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology, specifically relating to an electronic wrench assembly for sewing machines. Background Technology

[0002] Light source is one of the important factors affecting the user experience of sewing machine. When sewing fabric with a sewing machine, it is necessary to rely on light source to observe the stitches. If the illumination range of the light source is not wide enough, it will affect the sewing effect of the fabric.

[0003] In addition, during the sewing process, a reverse stitch switch and a stitch length adjustment switch are used. The reverse stitch switch enables the sewing machine to sew in reverse, while the stitch length adjustment switch controls the stitch length. Currently, the lighting control switch, reverse stitch switch, and stitch length adjustment switch of most sewing machines are not integrated into the same lever, which directly results in a low overall integration level of the sewing machine. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the present invention provides a sewing machine electronic wrench assembly that can integrate the reverse stitch switch and the stitch length adjustment switch into the same electronic wrench assembly, thereby improving the overall integration of the sewing machine.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An electronic wrench assembly for a sewing machine includes a switch body with a button box fixed on it. A circuit board is fixed to the button box, and a stitch length adjustment switch and a reverse stitch switch are slidably disposed thereon. A first magnetic induction sensor and a second magnetic induction sensor are integrated on the circuit board. A first magnet, movable relative to the first magnetic induction sensor and with a changing position, is fixed to the stitch length adjustment switch. A second magnet, movable relative to the second magnetic induction sensor and with a changing position, is fixed to the reverse stitch switch. Both the first and second magnetic induction sensors are connected to the signal input terminal of a controller, and the signal output terminal of the controller is connected to the feed motor of the sewing machine.

[0007] Furthermore, the button box is provided with a first slide groove and a second slide groove, the stitch pitch adjustment switch button is slidably disposed in the first slide groove, and the reverse stitch switch button is slidably disposed in the second slide groove; the circuit board is covered on the outside of the first slide groove and the second slide groove.

[0008] Furthermore, the first magnet is in the shape of a cuboid block, and the long side of the first magnet is arranged along the sliding direction of the pin pitch adjustment switch button.

[0009] Furthermore, one end of the pin pitch adjustment switch button extends sequentially to the outside of the button box and the outside of the switch body to form a first pressing end. The pin pitch adjustment switch button is provided with a first spring receiving space near the first pressing end and a first magnet receiving space away from the first pressing end. A first return spring is placed in the first spring receiving space. One end of the first return spring is fixedly connected to the corresponding side of the first spring receiving space near the first pressing end. A first protrusion for insertion into the first spring receiving space is fixed on the button box. The other end of the first return spring abuts against and is fixed on the first protrusion. The first magnet is fixed in the first magnet receiving space.

[0010] Furthermore, one end of the inverted slot switch button extends sequentially to the outside of the button box and the outside of the switch body to form a second pressing end. The inverted slot switch button is provided with a second spring receiving space near the second pressing end and a second magnet receiving space away from the second pressing end. A second return spring is placed in the second spring receiving space. One end of the second return spring is fixedly connected to the corresponding side of the second spring receiving space near the second pressing end. A second protrusion for insertion into the second spring receiving space is also fixed on the button box. The other end of the second return spring abuts against and is fixed on the second protrusion. The second magnet is fixed in the second magnet receiving space.

[0011] Furthermore, the switch body includes a housing, and a transparent mounting plate is fixed to the bottom of the housing. The mounting plate is used to fix a lamp board with LED beads arranged facing the mounting plate. The housing is provided with a lighting control switch button that is electrically connected to the lamp board. The lighting control switch button corresponds to the position of the terminal block on the circuit board. By pressing the lighting control switch button, the lighting control switch button contacts the terminal block and powers on the lamp board.

[0012] Furthermore, the button box is fixed to the housing, which is used to fix the sewing machine housing.

[0013] Furthermore, the circuit board is provided with power terminals for connecting to an external power source.

[0014] Furthermore, both the first and second magnetic induction sensors are linear Hall sensors and are electrically connected to the signal input terminal of the controller, while the signal output terminal of the controller is electrically connected to the fabric feeding motor of the sewing machine.

[0015] A sewing machine includes a housing and the aforementioned sewing machine electronic wrench assembly, wherein the switch body of the sewing machine electronic wrench assembly is fixed to the housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The sewing machine electronic wrench assembly of this utility model includes a switch body, a button box fixed on the switch body, a circuit board fixed on the button box, and a stitch length adjustment switch button and a reverse stitch switch button slidably disposed thereon. A first magnetic induction sensor and a second magnetic induction sensor are integrated on the circuit board. A first magnet that can move relative to the first magnetic induction sensor and whose position changes is fixed on the stitch length adjustment switch button, and a second magnet that can move relative to the second magnetic induction sensor and whose position changes is fixed on the reverse stitch switch button, are both fixed on the first magnetic induction sensor and whose position changes. Both the first and second magnetic induction sensors are connected to the signal input terminal of a controller, and the signal output terminal of the controller is connected to the feed motor of the sewing machine. By sliding the stitch length adjustment switch button and the reverse stitch switch button onto the button box, integrating the first magnetic induction sensor that cooperates with the first magnet fixed on the stitch length adjustment switch button onto the circuit board, integrating the second magnetic induction sensor that cooperates with the second magnet fixed on the reverse stitch switch button onto the circuit board, fixing the circuit board to the button box, and fixing the button box to the switch body, the reverse stitch switch and the stitch length adjustment switch can be integrated into the same electronic wrench assembly, thus improving the overall integration of the sewing machine.

[0018] In this invention, the first magnet is in the shape of a cuboid block, and its long side is arranged along the sliding direction of the stitch length adjustment switch button. By pressing the stitch length adjustment switch button, the first magnet moves relative to the first magnetic induction sensor along its long side, continuously changing the magnetic field strength of the first magnetic induction sensor integrated on the circuit board. The first magnetic induction sensor converts this continuous change in magnetic field strength into an electrical signal and sends it to the controller. The controller then sends a control signal to the sewing machine's feed motor based on the electrical signal from the first magnetic induction sensor, adjusting the motor's swing amplitude to achieve stitch length adjustment.

[0019] In this invention, the switch body includes a housing, with a transparent mounting plate fixed to the bottom of the housing. A lamp board with LED beads facing the mounting plate is fixed on the mounting plate. The housing has a lighting control switch button electrically connected to the lamp board, and the lighting control switch button corresponds to the position of a terminal block on the circuit board. By placing the lighting control switch button on the housing of the switch body, pressing the button allows it to contact the terminal block on the circuit board and energize the lamp board. Therefore, the lighting control switch can be integrated into this electronic wrench assembly, improving the overall integration of the sewing machine. Furthermore, since the lamp board is fixed to the transparent mounting plate, and the LED beads face the mounting plate, the lighting range of the lamp board can be expanded to ensure the sewing effect of the fabric. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the electronic wrench assembly for a sewing machine in this utility model;

[0021] Figure 2 for Figure 1 A three-dimensional structural diagram of the circuit board hidden in the middle, from another direction;

[0022] Figure 3 for Figure 2 A partially enlarged structural diagram;

[0023] Figure 4 for Figure 1 A three-dimensional structural diagram of another direction behind the hidden circuit board;

[0024] Figure 5 This is a top view of the electronic wrench assembly for a sewing machine in this utility model.

[0025] Figure 6 This is a side view of the electronic wrench assembly for a sewing machine in this utility model.

[0026] Figure 7 This is a bottom view of the electronic wrench assembly for a sewing machine in this utility model.

[0027] Figure 8 This is a three-dimensional structural diagram of the button box.

[0028] The following are the reference numerals in the diagram: 1. Switch body; 101. Housing; 102. Mounting plate; 2. Button box; 201. First slide groove; 202. Second slide groove; 3. Circuit board; 301. Terminal block; 302. Power terminal; 303. Travel terminal; 304. Thickness terminal; 4. Pitch adjustment switch button; 401. First pressing end; 5. Reverse gap switch button; 501. Second pressing end; 6. First magnet; 7. Second magnet; 8. First return spring; 9. Second return spring; 10. First protrusion; 11. Second protrusion; 12. Lamp panel; 13. Lighting control switch button. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0030] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figures 1-7 As shown, an electronic wrench assembly for a sewing machine includes a switch body 1, a button box 2 fixed on the switch body 1, a circuit board 3 fixed on the button box 2, and a stitch length adjustment switch button 4 and a reverse stitch switch button 5 slidably disposed thereon. The circuit board 3 integrates a first magnetic induction sensor and a second magnetic induction sensor. A first magnet 6, which can move relative to the first magnetic induction sensor and whose position changes, is fixed on the stitch length adjustment switch button 4. A second magnet 7, which can move relative to the second magnetic induction sensor and whose position changes, is fixed on the reverse stitch switch button 5. Both the first and second magnetic induction sensors are connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the feed motor of the sewing machine.

[0033] By sliding the stitch length adjustment switch button 4 and the reverse stitch switch button 5 onto the button box 2, integrating the first magnetic induction sensor that cooperates with the first magnet 6 fixed on the stitch length adjustment switch button 4 onto the circuit board 3, and integrating the second magnetic induction sensor that cooperates with the second magnet 7 fixed on the reverse stitch switch button 5 onto the circuit board 3, fixing the circuit board 3 onto the button box 2, and fixing the button box 2 onto the switch body 1, the reverse stitch switch and the stitch length adjustment switch can be integrated into the same electronic wrench assembly, thus improving the overall integration of the sewing machine.

[0034] By pressing the stitch length adjustment switch button 4, the first magnet 6 moves relative to the first magnetic induction sensor along with the stitch length adjustment switch button 4, changing the magnetic field strength of the first magnetic induction sensor integrated on the circuit board 3. The first magnetic induction sensor converts the change in magnetic field strength into an electrical signal and sends it to the controller. The controller then sends a control signal to the sewing machine's feed motor based on the electrical signal sent by the first magnetic induction sensor, thereby adjusting the swing amplitude of the feed motor and thus achieving stitch length adjustment.

[0035] By pressing the reverse sewing switch button 5, the second magnet 7 moves relative to the second magnetic induction sensor along with the reverse sewing switch button 5, changing the magnetic field strength of the second magnetic induction sensor integrated on the circuit board 3. The second magnetic induction sensor converts the change in magnetic field strength into an electrical signal and sends it to the controller. The controller then sends a control signal to the sewing machine's feed motor based on the electrical signal sent by the second magnetic induction sensor, changing the timing and thus changing the direction of the feed dog's movement, thereby realizing reverse sewing of the fabric.

[0036] In one embodiment, such as Figure 8 As shown, the button box 2 is provided with a first slide groove 201 and a second slide groove 202. The stitch pitch adjustment switch button 4 is slidably disposed in the first slide groove 201, and the reverse stitch switch button 5 is slidably disposed in the second slide groove 202. The circuit board 3 is covered on the outside of the first slide groove 201 and the second slide groove 202.

[0037] The first groove 201 ensures the sliding stability of the stitch length adjustment switch 4 when it is pressed, and the second groove 202 ensures the sliding stability of the reverse stitch switch 5 when it is pressed.

[0038] In one embodiment, the first magnet 6 is in the shape of a cuboid block, and the long side of the first magnet 6 is arranged along the sliding direction of the pin pitch adjustment switch button 4.

[0039] By pressing the stitch length adjustment switch button 4, the first magnet 6 moves relative to the first magnetic induction sensor along the long side of the first magnet 6, continuously changing the magnetic field strength of the first magnetic induction sensor integrated on the circuit board 3. The first magnetic induction sensor converts the continuous change in magnetic field strength into an electrical signal and sends it to the controller. The controller then sends a control signal to the sewing machine's feed motor based on the electrical signal sent by the first magnetic induction sensor, thereby adjusting the swing amplitude of the feed motor and thus adjusting the stitch length.

[0040] In one embodiment, one end of the pin pitch adjustment switch button 4 extends sequentially to the outside of the button box 2 and the outside of the switch body 1 to form a first pressing end 401, see Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The needle pitch adjustment switch button 4 has a first spring receiving space near the first pressing end 401 and a first magnet receiving space away from the first pressing end 401. A first return spring 8 is placed in the first spring receiving space. One end of the first return spring 8 is fixedly connected to the corresponding side of the first spring receiving space near the first pressing end 401. A first protrusion 10 for insertion into the first spring receiving space is fixed on the button box 2. The other end of the first return spring 8 abuts against and is fixed to the first protrusion 10. The first magnet 6 is fixed in the first magnet receiving space. See Figures 2-4 .

[0041] During the pressing of the first pressing end 401, one end of the first return spring 8 moves toward the first protrusion 10 along with the needle pitch adjustment switch button 4. Under the blocking action of the first protrusion 10, the position of the other end of the first return spring 8 does not change, thereby compressing the first return spring 8. When the pressing of the first pressing end 401 is stopped, the first return spring 8, which is in a compressed state, extends and resets, and drives the needle pitch adjustment switch button 4 back to the initial position.

[0042] In one embodiment, one end of the reverse-slit switch button 5 extends sequentially to the outside of the button box 2 and the outside of the switch body 1 to form a second pressing end 501, see Figure 4 , Figure 6 and Figure 7 The reverse-slit switch button 5 has a second spring receiving space near the second pressing end 501 and a second magnet receiving space away from the second pressing end 501. A second return spring 9 is placed in the second spring receiving space. One end of the second return spring 9 is fixedly connected to the corresponding side of the second spring receiving space near the second pressing end 501. A second protrusion 11 for insertion into the second spring receiving space is also fixed on the button box 2. The other end of the second return spring 9 abuts against and is fixed to the second protrusion 11. The second magnet 7 is fixed in the second magnet receiving space. See Figures 2-4 .

[0043] During the pressing of the second pressing end 501, one end of the second return spring 9 moves toward the second protrusion 11 along with the reverse stitch switch button 5. Under the blocking action of the second protrusion 11, the position of the other end of the second return spring 9 does not change, thereby compressing the second return spring 9. When the pressing of the second pressing end 501 is stopped, the second return spring 9, which is in a compressed state, extends and resets, and drives the reverse stitch switch button 5 back to the initial position.

[0044] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the switch body 1 includes a housing 101, and a transparent mounting plate 102 is fixed to the bottom of the housing 101. A lamp plate 12 is fixed on the mounting plate 102 and arranged facing the mounting plate 102. A lighting control switch button 13 electrically connected to the lamp plate 12 is provided on the housing 101. The lighting control switch button 13 corresponds to the position of the terminal 301 on the circuit board 3. By pressing the lighting control switch button 13, the lighting control switch button 13 contacts the terminal 301 and energizes the lamp plate 12.

[0045] By placing the lighting control switch button 13 on the housing 101 of the switch body 1, pressing the lighting control switch button 13 will cause it to contact the terminal 301 on the circuit board 3 and energize the lamp board 12. Therefore, the lighting control switch can also be integrated into this electronic wrench assembly to improve the overall integration of the sewing machine. In addition, since the lamp board 12 is fixed on the transparent mounting plate 102 and the lamp beads of the lamp board 12 are arranged facing the mounting plate 102, the lighting range of the lamp board 12 can be expanded to ensure the sewing effect of the fabric. Moreover, since the mounting plate 102 covers the lamp beads, it can protect the lamp beads.

[0046] Preferably, the button box 2 is fixed to the housing 101, which is used to fix the sewing machine housing.

[0047] In one embodiment, such as Figure 1 and Figure 5 As shown, the circuit board 3 is provided with a power terminal 302 for connecting to an external power source. Preferably, the circuit board 3 is also provided with a stroke terminal 303 for connecting to the stroke adjustment button of the sewing machine, and a thickness terminal 304 for connecting to the fabric thickness detection button.

[0048] In one embodiment, both the first and second magnetic induction sensors are linear Hall sensors and are electrically connected to the signal input terminal of the controller, while the signal output terminal of the controller is electrically connected to the feed motor of the sewing machine.

[0049] A sewing machine includes a housing and the aforementioned sewing machine electronic wrench assembly, wherein the switch body 1 of the sewing machine electronic wrench assembly is fixed to the housing.

[0050] This invention implements button functions through an electronic wrench assembly, making it easy to operate.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A sewing machine electronic keyer assembly, characterized by: The device includes a switch body (1), a button box (2) fixed on the switch body (1), a circuit board (3) fixed on the button box (2) and a stitch length adjustment switch button (4) and a reverse stitch switch button (5) slidably disposed thereon, a first magnetic induction sensor and a second magnetic induction sensor integrated on the circuit board (3), a first magnet (6) fixed on the stitch length adjustment switch button (4) that can move relative to the first magnetic induction sensor and whose position changes, and a second magnet (7) fixed on the reverse stitch switch button (5) that can move relative to the second magnetic induction sensor and whose position changes, the first magnetic induction sensor and the second magnetic induction sensor are both connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the fabric feeding motor of the sewing machine.

2. The electronic key assembly for a sewing machine according to claim 1, characterized in that: The button box (2) is provided with a first slide groove (201) and a second slide groove (202). The stitch length adjustment switch button (4) is slidably disposed in the first slide groove (201), and the reverse stitch switch button (5) is slidably disposed in the second slide groove (202). The circuit board (3) is covered on the outside of the first slide groove (201) and the second slide groove (202).

3. The electronic key assembly for a sewing machine according to claim 1, wherein: The first magnet (6) is in the shape of a cuboid block, and the long side of the first magnet (6) is arranged along the sliding direction of the needle pitch adjustment switch button (4).

4. The electronic key assembly for a sewing machine according to claim 1, wherein: One end of the needle pitch adjustment switch button (4) extends sequentially to the outside of the button box (2) and the outside of the switch body (1) to form a first pressing end (401). The needle pitch adjustment switch button (4) is provided with a first spring receiving space near the first pressing end (401) and a first magnet receiving space away from the first pressing end (401). A first reset spring (8) is placed in the first spring receiving space. One end of the first reset spring (8) is fixedly connected to the corresponding side of the first spring receiving space near the first pressing end (401). A first protrusion (10) for insertion into the first spring receiving space is fixed on the button box (2). The other end of the first reset spring (8) abuts against and is fixed on the first protrusion (10). The first magnet (6) is fixed in the first magnet receiving space.

5. The electronic key assembly for a sewing machine according to claim 1, wherein: One end of the inverted slot switch button (5) extends sequentially to the outside of the button box (2) and the outside of the switch body (1) to form a second pressing end (501). The inverted slot switch button (5) is provided with a second spring receiving space near the second pressing end (501) and a second magnet receiving space away from the second pressing end (501). A second reset spring (9) is placed in the second spring receiving space. One end of the second reset spring (9) is fixedly connected to the corresponding side of the second spring receiving space near the second pressing end (501). A second protrusion (11) for insertion into the second spring receiving space is also fixed on the button box (2). The other end of the second reset spring (9) abuts against and is fixed on the second protrusion (11). The second magnet (7) is fixed in the second magnet receiving space.

6. The electronic key assembly for a sewing machine according to claim 1, wherein: The switch body (1) includes a housing (101), and a transparent mounting plate (102) is fixed to the bottom of the housing (101). A lamp plate (12) is fixed on the mounting plate (102) and arranged facing the mounting plate (102). A lighting control switch button (13) electrically connected to the lamp plate (12) is provided on the housing (101). The lighting control switch button (13) corresponds to the terminal (301) on the circuit board (3). By pressing the lighting control switch button (13), the lighting control switch button (13) contacts the terminal (301) and energizes the lamp plate (12).

7. The electronic key assembly for a sewing machine according to claim 6, wherein: The button box (2) is fixed to the housing (101), which is used to fix the sewing machine housing.

8. The electronic key assembly for a sewing machine according to claim 1, wherein: The circuit board (3) is provided with a power terminal (302) for connecting to an external power source.

9. The electronic key assembly for a sewing machine according to claim 1, wherein: Both the first and second magnetic induction sensors are linear Hall sensors and are electrically connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the feed motor of the sewing machine.

10. A sewing machine, comprising a housing, and further comprising a sewing machine electronic wrench assembly as described in any one of claims 1-9, wherein the switch body (1) of the sewing machine electronic wrench assembly is fixed to the housing.

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