Lifting drive for a foot switch

Abstract

The utility model belongs to foot switch technical field especially is a kind of lifting drive device of foot switch, including bottom plate, the cavity groove of bottom plate is equipped with foot control module, foot control module includes the limiting frame of embedding in cavity groove, the telescopic plate of adaptation on limiting frame. The utility model is installed foot control module, lifting drive module on bottom plate, two slidable round poles are provided on lifting drive module, travel sensor is installed between the mounting plate of wedge block one side and vertical board, when footboard drives telescopic plate to move down, the roller of its one side can be contacted with corresponding wedge block respectively, drive corresponding round pole to retract, then trigger corresponding travel sensor, control lifting device to lift, reach the purpose of controlling lifting device lifting by one footboard, solve the device of present stage and need two footboard control device to lift, then make the problem of cumbersome operation, error-prone.

Description

Technical Field

[0001] This utility model relates to the field of foot switch technology, specifically to a lifting drive device for a foot switch. Background Technology

[0002] A foot switch is a switch that controls the on / off state of a circuit by stepping on it. It is used in control circuits where the hands cannot reach or are inconvenient to use, thus replacing the hands for operation. In the industrial manufacturing field, foot switches are often used to control the lifting of equipment. Generally, there are two foot switches, one for lifting and the other for lowering, to facilitate operation and control. However, this method has certain drawbacks. First, the operator needs to switch their feet left and right to trigger the pedal switch. In actual work, the operator usually uses both hands and feet, and it is difficult to concentrate on the foot movements. In most cases, the eyes must observe the display equipment while also paying attention to the foot movements, which can easily lead to accidental activation. This is very inconvenient, as it is not possible to control the lifting and lowering of the device with a single foot switch, and the ease of operation is not good enough. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a lifting drive device for a foot switch. By installing a foot control module and a lifting drive module on a base plate, the lifting drive module has two slidable round rods. A wedge block is installed at one end of each round rod. A travel sensor is installed between the mounting plate on one side of the wedge block and the vertical plate. When the foot pedal moves the telescopic plate downwards, the rollers on one side of the plate contact the corresponding wedge blocks, causing the corresponding round rods to extend or retract. This triggers the corresponding travel sensors, controlling the lifting device to rise or fall. This achieves the goal of controlling the lifting device's rise and fall with a single foot pedal, solving the problem of current devices requiring two foot pedals for control, which leads to cumbersome operation and a high risk of errors.

[0004] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A lifting drive device for a foot switch includes a base plate. A foot control module is installed on a cavity in the base plate. The foot control module includes a limiting frame embedded in the cavity, a telescopic plate adapted to the limiting frame, and a foot pedal fixedly connected to the upper end of the telescopic plate. A crossbar is fixedly connected to one side of the telescopic plate, and a roller is installed at the end of the crossbar away from the telescopic plate. A lifting drive module is located on the side of the roller on the base plate. The lifting drive module includes a vertical plate fixedly connected to the base plate and two round rods slidably connected to the vertical plate. The two round rods are distributed vertically and vertically, and a wedge block is fixedly connected to one end of each round rod. The upper and lower sides of the wedge block are provided with inclined surfaces. When the telescopic plate extends or retracts, it can drive the roller to rise or fall, thereby causing the roller to contact the corresponding inclined surface and drive the wedge block to extend or retract. A mounting plate is fixedly connected to one side of the wedge block. A stroke sensor is installed between the mounting plate and the vertical plate. One stroke sensor controls the lifting device to rise, and the other stroke sensor controls the lifting device to fall.

[0005] Furthermore, the base plate is fixedly connected to a protective frame on the outside of the foot pedal control module and the lifting drive module, and the protective frame has a hollow cavity. A controller is installed on one side of the protective frame, and the output ends of the two stroke sensors are electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the lifting device.

[0006] Furthermore, the round rod is slidably connected to the corresponding round hole in the vertical plate, and a protrusion is fixedly connected to the round hole in the vertical plate. The round rod is provided with a sliding groove that matches the protrusion.

[0007] Furthermore, a protective cap is fixedly connected to the end of the round rod away from the wedge block, and one side of the protective cap abuts against the vertical plate; and a first spring is sleeved on the round rod, with the two ends of the first spring abutting against the wedge block and the vertical plate respectively.

[0008] Furthermore, the limiting frame includes a frame body embedded in the cavity groove, and two symmetrically distributed limiting blocks are fixedly connected to the inner wall of the frame body. The telescopic plate includes a body body adapted to the inner wall of the frame body, and limiting grooves are opened on both sides of the body body. The limiting grooves are adapted to the limiting blocks, and a baffle is fixedly connected to one side of the frame body. A groove is opened on the body body corresponding to the baffle, and a second spring is provided inside the groove. The second spring is fixedly connected between the baffle and the body body.

[0009] Furthermore, the elastic force of the second spring is greater than that of the first spring, and the upper surface of the foot pedal is provided with an array of anti-slip protrusions.

[0010] (III) Beneficial Effects Compared with the prior art, the present invention provides a lifting drive device for a foot switch, which has the following advantages: This invention utilizes a foot pedal control module and a lifting drive module mounted on a base plate. When an operator steps on the foot pedal, the foot pedal and telescopic plate move downwards. A roller is mounted on a crossbar on one side of the telescopic plate. The roller first contacts an upper wedge block, driving a corresponding round rod to move, which in turn triggers a stroke sensor. As the foot pedal continues to move downwards, the roller contacts a lower wedge block, driving a lower round rod to move, causing its corresponding stroke sensor to detect a signal. One stroke sensor controls the lifting device to rise, and the other controls its descent. The outputs of both stroke sensors are electrically connected to the input of a controller, and the controller's output is electrically connected to the input of the lifting device. This enables lifting control of the device, allowing a single foot pedal to control both the rising and falling of the device without requiring the operator to switch foot movements left and right. This solves the problem of accidental touches caused by distraction in traditional dual-pedal designs, improving operational convenience and accuracy. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the present invention when disassembled; Figure 3 This is a structural schematic diagram of the limiting frame and telescopic plate of this utility model; Figure 4 This is a schematic diagram of the lifting drive module in this utility model.

[0012] In the diagram: 1. Base plate; 2. Protective frame; 3. Foot pedal control module; 4. Controller; 5. Cavity; 6. Hollow cavity; 7. Lifting drive module; 701. Vertical plate; 702. Round hole; 703. Protrusion; 704. Protective cap; 705. Round rod; 706. Slide groove; 707. First spring; 708. Wedge block; 709. Mounting plate; 7010. Inclined surface; 7011. Stroke sensor; 8. Limiting frame; 801. Frame body; 802. Limiting block; 803. Baffle; 9. Telescopic plate; 901. Body; 902. Limiting groove; 903. Groove; 904. Second spring; 10. Foot pedal; 11. Roller. Detailed Implementation

[0013] 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.

[0014] Example like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, an embodiment of the present invention discloses a lifting drive device for a foot switch, including a base plate 1, which serves as a basic support. An operator can place their foot on the base plate 1. A foot control module 3 is installed in a cavity 5 on the base plate 1. The foot control module 3 drives the lifting device. The foot control module 3 includes a limiting frame 8 embedded in the cavity 5, a telescopic plate 9 adapted to the limiting frame 8, and a foot pedal 10 fixedly connected to the upper end of the telescopic plate 9. During use, the operator can step on the foot pedal 10, causing the telescopic plate 9 to move downwards. A crossbar is fixedly connected to one side of the telescopic plate 9, and a roller 11 is installed at the end of the crossbar away from the telescopic plate 9. When the foot pedal 10 and the telescopic plate 9 move downwards, the crossbar and roller 11 can move downwards, controlling the lifting action of the lifting device. A lifting drive module 7 is provided on the side of the roller 11 on the base plate 1. The lifting drive module 7 includes a vertical plate 701 fixedly connected to the base plate 1, and two... Two circular rods 705 are arranged vertically, one above the other, to facilitate control of their ascent and descent. Each rod 705 has a wedge-shaped block 708 fixedly connected to one end. The wedge-shaped block 708 has inclined surfaces 7010 on both its upper and lower sides. These inclined surfaces 7010 facilitate the extension and retraction of the wedge-shaped block 708. When the telescopic plate 9 extends or retracts, it drives the roller 11 to rise or fall, causing the roller 11 to contact the corresponding inclined surface 7010 and thus driving the wedge-shaped block 708. 8. The wedge block 708 is telescopic, and a mounting plate 709 is fixedly connected to one side. A stroke sensor 7011 is installed between the mounting plate 709 and the vertical plate 701. One stroke sensor 7011 controls the lifting device to rise, and the other stroke sensor 7011 controls the lifting device to fall. The stroke sensor 7011 is a linear displacement sensor, model LI800P0-Q25LM0-IOLX3-H1141. Its usage is known prior art and will not be described in detail.

[0015] like Figure 1 and Figure 4As shown, in some embodiments, a protective frame 2 is fixedly connected to the base plate 1 outside the foot pedal control module 3 and the lifting drive module 7. The protective frame 2 can realize the safety protection function of the foot pedal control module 3 and the lifting drive module 7. The protective frame 2 has a hollow cavity 6 to facilitate foot pedal operation without interference. A controller 4 is installed on one side of the protective frame 2. The controller 4 is model S7-400. The output terminals of the two stroke sensors 7011 are electrically connected to the input terminals of the controller 4. The output terminal of the controller 4 is electrically connected to the input terminal of the lifting device, thereby controlling the device to rise or fall. The upper stroke sensor 7011 controls the lifting device to rise, and the lower stroke sensor 7011 controls the lifting device to fall. The lifting device is a hydraulically driven lifting platform that drives it to rise and fall.

[0016] like Figure 4 As shown, in some embodiments, the round rod 705 is slidably connected to the corresponding round hole 702 on the vertical plate 701, so that the round rod 705 can extend and retract normally. A protrusion 703 is fixedly connected to the round hole 702 of the vertical plate 701, and the round rod 705 is provided with a sliding groove 706 that matches the protrusion 703, which plays a limiting role and makes the round rod 705 slide smoothly.

[0017] like Figure 4 As shown, in some embodiments, a protective cap 704 is fixedly connected to the end of the round rod 705 away from the wedge block 708. One side of the protective cap 704 abuts against the vertical plate 701, which serves to limit the round rod 705 and prevent it from falling off. Furthermore, a first spring 707 is sleeved on the round rod 705. The two ends of the first spring 707 abut against the wedge block 708 and the vertical plate 701, respectively, to realize the automatic reset function of the round rod 705 and the wedge block 708.

[0018] like Figure 3 As shown, in some embodiments, the limiting frame 8 includes a frame 801 embedded in the cavity 5, and two symmetrically distributed limiting blocks 802 are fixedly connected to the inner wall of the frame 801. The telescopic plate 9 includes a body 901 adapted to the inner wall of the frame 801, and limiting grooves 902 are opened on both sides of the body 901. The limiting grooves 902 are adapted to the limiting blocks 802 to play a limiting role, so as to realize the smooth sliding of the body 901 inside the frame 801. A baffle 803 is fixedly connected to one side of the frame 801, and a groove 903 is opened on the body 901 corresponding to the baffle 803. A second spring 904 is provided inside the groove 903. The second spring 904 is fixedly connected between the baffle 803 and the body 901 to realize the automatic reset of the body 901.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, the elastic force of the second spring 904 is greater than that of the first spring 707, which gives the body 901 a strong restoring ability and allows it to extend to the upper position via the two wedge blocks 708. Furthermore, the upper surface of the foot pedal 10 is provided with an array of anti-slip protrusions, which provide good anti-slip performance.

[0020] The working principle and usage steps of this utility model are as follows: When the foot pedal 10 is not stepped on, the telescopic plate 9 is in its highest initial position under the elastic force of the second spring 904. The roller 11 is located in the gap between the two wedge blocks 708 and is not in contact with any inclined surface 7010. The two round rods 705 are in their initial positions under the elastic force of the first spring 707. The stroke sensor 7011 is not triggered, the controller 4 outputs a "stop" signal, and the lifting device does not operate. When the worker lightly steps on the foot pedal 10, the foot pedal 10 drives the telescopic plate 9 to overcome... The second spring 904 moves downwards due to its elastic force, and the limiting groove 902 slides along the limiting block 802, ensuring smooth vertical extension and contraction. The telescopic plate 9 moves downwards, causing the roller 11 to descend synchronously. It first contacts the inclined surface 7010 of the upper wedge block 708. As the roller 11 rolls along the inclined surface 7010, it generates a horizontal thrust, pushing the upper wedge block 708 to move the corresponding round rod 705 away from the vertical plate 701, compressing the first spring 707. When the round rod 705 moves, the mounting plate 709 triggers the upper stroke sensor 7011. The controller 4 outputs an "up" signal, and the controller 4 drives the lifting device to perform a descent action. If the user continues to press down on the foot pedal 10, the telescopic plate 9 moves further down, and the roller 11 passes over the upper wedge block 708 and contacts the upper inclined surface 7010 of the lower wedge block 708. The roller 11 rolls along the lower inclined surface 7010, pushing the lower wedge block 708 to drive the corresponding round rod 705 to move horizontally, compressing the lower first spring 707, triggering the lower stroke sensor 7011. The lower sensor outputs a "down" signal to the controller 4, and the controller... When the controller 4 switches commands, it drives the lifting device to perform an upward movement. At this time, the upper sensor is reset because the roller 11 is disengaged and no longer outputs a downward signal. When the user releases the foot pedal 10, the telescopic plate 9 is reset upward under the elastic force of the second spring 904, and the roller 11 is disengaged from the inclined surface 7010 of the wedge block 708. The two round rods 705 are reset under the elastic force of the first spring 707, the stroke sensor 7011 stops outputting signals, and the controller 4 outputs a "stop" command after not receiving a signal. The lifting device stops moving and the device returns to its initial state.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is 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 lifting drive device for a foot switch, comprising a base plate (1), characterized in that: A foot pedal control module (3) is installed on the cavity (5) of the base plate (1). The foot pedal control module (3) includes a limiting frame (8) embedded in the cavity (5), a telescopic plate (9) adapted to the limiting frame (8), and a foot pedal (10) fixedly connected to the upper end of the telescopic plate (9). A crossbar is fixedly connected to one side of the telescopic plate (9), and a roller (11) is installed at the end of the crossbar away from the telescopic plate (9). A lifting drive module (7) is provided on the side of the base plate (1) located at the roller (11). The lifting drive module (7) includes a vertical plate (701) fixedly connected to the base plate (1), and two round rods (705) slidably connected to the vertical plate (701). The rods (705) are distributed vertically and vertically, and one end of each of the two round rods (705) is fixedly connected to a wedge block (708). The wedge block (708) has inclined surfaces (7010) on both its upper and lower sides. When the telescopic plate (9) extends and retracts, it can drive the roller (11) to rise and fall, thereby causing the roller (11) to contact the corresponding inclined surface (7010) and drive the wedge block (708) to extend and retract. A mounting plate (709) is fixedly connected to one side of the wedge block (708). A stroke sensor (7011) is installed between the mounting plate (709) and the vertical plate (701). One stroke sensor (7011) controls the lifting device to rise, and the other stroke sensor (7011) controls the lifting device to fall.

2. The lifting drive device for a foot switch according to claim 1, characterized in that: The base plate (1) is fixedly connected to the protective frame (2) on the outside of the foot pedal control module (3) and the lifting drive module (7), and the protective frame (2) has a hollow cavity (6) and a controller (4) is installed on one side of the protective frame (2). The output ends of the two stroke sensors (7011) are electrically connected to the input end of the controller (4), and the output end of the controller (4) is electrically connected to the input end of the lifting device.

3. The lifting drive device for a foot switch according to claim 1, characterized in that: The round rod (705) is slidably connected to the corresponding round hole (702) on the vertical plate (701), and a protrusion (703) is fixedly connected to the round hole (702) of the vertical plate (701). The round rod (705) is provided with a groove (706) that matches the protrusion (703) on the corresponding protrusion (703).

4. The lifting drive device for a foot switch according to claim 1, characterized in that: A protective cap (704) is fixedly connected to one end of the round rod (705) away from the wedge block (708), and one side of the protective cap (704) abuts against the vertical plate (701); and a first spring (707) is sleeved on the round rod (705), and the two ends of the first spring (707) abut against the wedge block (708) and the vertical plate (701) respectively.

5. The lifting drive device for a foot switch according to claim 1, characterized in that: The limiting frame (8) includes a frame (801) embedded in the cavity (5), and two symmetrically distributed limiting blocks (802) are fixedly connected to the inner wall of the frame (801). The telescopic plate (9) includes a body (901) adapted to the inner wall of the frame (801), and limiting grooves (902) are opened on both sides of the body (901). The limiting grooves (902) are adapted to the limiting blocks (802), and a baffle (803) is fixedly connected to one side of the frame (801). A groove (903) is opened on the body (901) corresponding to the baffle (803). A second spring (904) is provided inside the groove (903). The second spring (904) is fixedly connected between the baffle (803) and the body (901).

6. The lifting drive device for a foot switch according to claim 5, characterized in that: The second spring (904) has a greater elastic force than the first spring (707), and the upper surface of the foot pedal (10) is provided with an array of anti-slip protrusions.

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