Proximity switch for pedal capable of preventing starting in power failure

Abstract

The proximity switch comprises a bin body, a protection structure is arranged on the lower side of the interior of the bin body, the protection structure is formed by combining a connecting sleeve, a spring body, a sleeve and an inclined table, the spring body is arranged among the bin body, the connecting sleeve and the sleeve, and the inclined table is arranged on the lower side of the bin body. A proximity switch body is arranged on the lower portion of the inner side of the bin body. According to the proximity switch for the pedal capable of preventing starting in power failure, a connecting sleeve and a connecting screw hole can be connected together through a lug plate and a bolt, the connecting sleeve is convenient to disassemble and assemble, and therefore maintenance is convenient, after a cover plate body is opened in a sliding mode, a spring body recovers elastic deformation, and a sleeve moves upwards in the connecting sleeve; the cover plate body is connected with the limiting plate in a clamped mode through the L-shaped block, when the L-shaped block slides to the position of the open groove, the cover plate body can be taken down, a shuttle peg is convenient to replace, and mistaken touch is prevented.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine bobbin technology, specifically a proximity switch for a pedal that prevents restarting after power failure. Background Technology

[0002] The sewing machine bobbin is the core component in a sewing machine that stores and supplies the thread. Located inside the bobbin case, the bobbin is used to wind the thread and is the core storage component for the thread during the sewing process. The proximity switch of the pedal is an electronic switch that can detect the position or movement of the pedal without mechanical contact. It triggers a signal output by sensing the proximity of a target object (such as the pedal). Its core principle is based on technologies such as electromagnetic induction, capacitance change, photoelectric effect, or ultrasonic reflection. When the pedal is close to the sensing surface of the proximity switch, the sensor detects the change in magnetic field, capacitance, or light intensity, thereby outputting an electrical signal to control the on / off state of the circuit.

[0003] However, when using common pedal proximity switches, the cover needs to be opened to change the bobbin, and the equipment will be powered off for safety protection. If an employee accidentally steps on the pedal, it will start and cause accidental injury. Therefore, there is still room for further improvement.

[0004] Therefore, we propose a proximity switch for pedals that prevents restarting after power failure, in order to solve the problems mentioned above. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a power-off anti-start proximity switch for pedals. This change addresses the common issue where opening the cover during bobbin replacement automatically cuts off power for safety, but accidentally triggers the switch if an employee steps on it, potentially causing injury. Therefore, there is room for further improvement.

[0006] To achieve the above objectives, the present invention provides the following technical solution: the protective structure is composed of a connecting sleeve, a spring body, a sleeve, and an inclined platform. The spring body is located in the middle of the housing, the connecting sleeve, and the sleeve, and a proximity switch body is located on the lower inner side of the housing. A sliding mechanism for replacing the bobbin is provided on the inner side of the housing, and the bobbin is slidably connected to the bobbin case, and the bobbin case is located on the lower inner side of the housing.

[0007] By adopting the above technical solution, the protective structure and sliding mechanism can achieve the effect of preventing restarting after power failure.

[0008] As a preferred technical solution of this utility model, a connecting screw hole is provided on the lower inner side of the compartment body, and the connecting screw hole is distributed in an array. A connecting sleeve is tightly fitted on the upper side of the compartment body, and the connecting sleeve is located on the outer side of the proximity switch body.

[0009] By adopting the above technical solution, the proximity switch body is located inside the connecting sleeve, which can achieve preliminary prevention of accidental contact.

[0010] As a preferred technical solution of this utility model, the outer side of the connecting sleeve is provided with an ear plate, and the ear plate is threadedly connected to the bolt, and the bolt is threadedly connected to the connecting screw hole, and the ear plate and the bolt correspond one-to-one with the connecting screw hole.

[0011] Using the above technical solution, the connecting screw hole and the ear plate are connected together by bolts, so that the connecting sleeve is set on the lower inner side of the compartment.

[0012] As a preferred embodiment of this utility model, the connecting sleeve is slidably connected to the inside, and a sloping platform is provided on the right side of the sleeve.

[0013] Using the above technical solution, the sleeve and the connecting sleeve are slidably connected, which facilitates the sleeve to move up and down within the connecting sleeve.

[0014] As a preferred technical solution of this utility model, the sliding mechanism is composed of a limiting plate, a slot, a cover plate body and an L-shaped block. The limiting plate is provided on the front inner side of the compartment, and the limiting plate is symmetrical about the vertical central axis of the compartment. The limiting plate has a slot on its inner side.

[0015] Using the above technical solution, a slot is provided on the inner side of the limiting plate to facilitate the sliding of the L-shaped block inside the limiting plate.

[0016] As a preferred technical solution of this utility model, the upper side of the limiting plate is closely fitted with the cover plate body, and an L-shaped block is provided on the lower side of the cover plate body, and the L-shaped block is slidably connected with the limiting plate. In addition, a groove is provided on the upper side of the cover plate body, wherein the grooves are distributed in an array.

[0017] By adopting the above technical solution, the groove can increase friction and prevent slippage when moving the cover plate body.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: the proximity switch for the pedal used in the power failure anti-starting device can connect the connecting sleeve to the connecting screw hole through the ear plate and bolt, which facilitates the disassembly and installation of the connecting sleeve and thus facilitates maintenance. When the cover plate body is slid open, the spring body will restore its elastic deformation, allowing the sleeve to move upward inside the connecting sleeve, thereby allowing the sleeve to wrap around the proximity switch body, thus achieving the purpose of power failure anti-starting. The cover plate body is connected to the limit plate by an L-shaped block. When the L-shaped block slides to the slotted position, the cover plate body can be removed, which facilitates the replacement of the bobbin and prevents accidental activation.

[0019] 1. This utility model is provided with connecting screw holes, ear plates and bolts. The ear plates are provided on the side of the connecting sleeve. The ear plates and bolts can connect the connecting sleeve to the connecting screw holes, which facilitates the disassembly and installation of the connecting sleeve, thereby facilitating maintenance.

[0020] 2. This utility model is provided with a spring body, a sleeve and an inclined platform. The connecting sleeve is set on the outside of the proximity switch body. When the cover body is slid open, the spring body will restore its elastic deformation, allowing the sleeve to move upward inside the connecting sleeve, thereby allowing the sleeve to wrap around the proximity switch body, thus achieving the purpose of power-off and anti-starting.

[0021] 3. This utility model is provided with a limiting plate, a slot and an L-shaped block. The cover plate body is set on the upper side of the limiting plate and is connected to the limiting plate by the L-shaped block. When the L-shaped block slides to the position of the slot, the cover plate body can be removed, which is convenient for replacing the bobbin and preventing accidental contact. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the hopper body of this utility model;

[0025] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 4 This is an exploded view of the proximity switch body and connecting sleeve of this utility model;

[0027] Figure 5 This is a schematic diagram of the connection structure between the limiting plate and the L-shaped block of this utility model.

[0028] In the diagram: 1. Chamber body; 2. Shuttle shell; 3. Shuttle core; 4. Proximity switch body; 5. Connecting screw hole; 6. Connecting sleeve; 7. Ear plate; 8. Bolt; 9. Spring body; 10. Sleeve; 11. Inclined platform; 12. Limiting plate; 13. Slot; 14. Cover plate body; 15. L-shaped block; 16. Groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 The present invention provides the following technical solution: A proximity switch for a pedal with power failure prevention, comprising: a housing 1, a connecting sleeve 6, a spring body 9, and a sleeve 10. The lower inner side of the housing 1 is provided with a protective structure, which is composed of the connecting sleeve 6, the spring body 9, the sleeve 10, and the inclined platform 11. The inner side of the housing 1 is provided with a sliding mechanism for replacing the bobbin 3. The sliding mechanism is composed of a limiting plate 12, a slot 13, a cover plate body 14, and an L-shaped block 15. The power failure prevention effect can be achieved through the protective structure and the sliding mechanism.

[0031] like Figure 2 As shown, the bobbin case 2 is located on the lower inner side of the housing 1, and the bobbin 3 is slidably connected to the bobbin case 2. When the bobbin 3 needs to be replaced, open the cover plate body 14, take out the used bobbin 3, align the newly wound bobbin 3 with the bobbin thread and insert it into the notch of the bobbin case 2, ensuring that the bobbin 3 is in the correct direction. After installation, guide the bobbin thread above the needle hole to ensure that the bobbin thread is smooth. In addition, when replacing the bobbin 3, ensure that the bobbin case 2 and the bobbin 3 fit tightly to avoid the bobbin thread from getting tangled or breaking.

[0032] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the sliding mechanism is composed of a limiting plate 12, a slot 13, a cover plate body 14, and an L-shaped block 15. When it is necessary to open the cover plate body 14, press the groove 16 on the upper side of the cover plate body 14. The groove 16 can increase the friction between the cover plate body 14 and the palm, making it easier to slide open the cover plate body 14. In addition, the limiting plate 12 is located inside the compartment 1. When the L-shaped block 15 on the lower side of the cover plate body 14 slides to the position of the slot 13, the cover plate body 14 can be removed. Furthermore, when the cover plate body 14 moves to the upper right side of the compartment 1, the spring body 9 will restore its elastic deformation, allowing the sleeve 10 to move upward inside the connecting sleeve 6, thereby allowing the sleeve 10 to wrap around the proximity switch body 4 to prevent accidental contact, thus achieving the purpose of power-off and anti-start.

[0033] like Figure 3As shown, when it is necessary to disassemble and install the connecting sleeve 6, since the inner lower side of the housing 1 has connecting screw holes 5 and the connecting screw holes 5 are arranged in an array, and the connecting sleeve 6 is located on the outside of the proximity switch body 4, and the outside of the connecting sleeve 6 is provided with ear plates 7, and both the ear plates 7 and the connecting screw holes 5 are threadedly connected to the bolts 8, and the ear plates 7 and the bolts 8 correspond one-to-one with the connecting screw holes 5, the bolts 8 can be removed from all the ear plates 7 to disconnect the connecting sleeve 6 from the housing 1, thereby facilitating the maintenance of the proximity switch body 4, and also allowing the spring body 9 to be replaced.

[0034] like Figure 2 and Figure 4 As shown, after the bobbin 3 is replaced, the cover plate body 14 is moved to the left. At this time, the L-shaped block 15 slides inside the limiting plate 12. When the left side of the cover plate body 14 contacts the inclined platform 11, since the inclined platform 11 is set at an angle, the cover plate body 14 continues to move, which will cause the sleeve 10 to move down. At this time, the spring body 9 undergoes elastic deformation.

[0035] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A proximity switch for a pedal designed to prevent restarting after a power outage, comprising: The chamber (1) has a protective structure on its lower interior side. The protective structure is composed of a connecting sleeve (6), a spring body (9), a sleeve (10) and a ramp (11). The spring body (9) is located in the middle of the chamber (1), the connecting sleeve (6) and the sleeve (10), and a proximity switch body (4) is located on the lower inner side of the chamber (1). Its characteristic is that it further includes: The inner side of the housing (1) is provided with a sliding mechanism for replacing the bobbin (3), and the bobbin (3) is slidably connected to the bobbin case (2), and the bobbin case (2) is located on the lower inner side of the housing (1).

2. The proximity switch for a pedal with anti-start function in case of power failure as described in claim 1, characterized in that: The inner side of the chamber (1) is provided with connecting screw holes (5), and the connecting screw holes (5) are arranged in an array. The upper side of the chamber (1) is tightly fitted with a connecting sleeve (6), and the connecting sleeve (6) is located on the outside of the proximity switch body (4).

3. A proximity switch for a pedal with anti-start function in case of power failure as described in claim 2, characterized in that: The outer side of the connecting sleeve (6) is provided with an ear plate (7), and the ear plate (7) is threadedly connected to the bolt (8), and the bolt (8) is threadedly connected to the connecting screw hole (5). Moreover, the ear plate (7) and the bolt (8) correspond one-to-one with the connecting screw hole (5).

4. The proximity switch for a pedal with anti-start function in case of power failure as described in claim 1, characterized in that: The connecting sleeve (6) is slidably connected to the sleeve (10), and a ramp (11) is provided on the right side of the sleeve (10).

5. A proximity switch for a pedal designed to prevent restarting after a power outage, as described in claim 1, characterized in that: The sliding mechanism is composed of a limiting plate (12), a slot (13), a cover plate body (14) and an L-shaped block (15). The limiting plate (12) is provided on the front inner side of the compartment (1), and the limiting plate (12) is symmetrical about the vertical central axis of the compartment (1). The slot (13) is provided on the inner side of the limiting plate (12).

6. A proximity switch for a pedal with anti-start function in case of power failure as described in claim 5, characterized in that: The upper side of the limiting plate (12) is tightly fitted to the cover plate body (14), and an L-shaped block (15) is provided on the lower side of the cover plate body (14). The L-shaped block (15) is slidably connected to the limiting plate (12), and a groove (16) is provided on the upper side of the cover plate body (14), wherein the groove (16) is distributed in an array.

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