Cover limiting linear position sensor and power control system

Abstract

The utility model discloses a cover limiting linear position sensor and a power control system, and belongs to the technical field of industrial automatic control devices. A cover limiting linear position sensor and a power control system comprise a shell assembly, a sliding assembly and a control panel, the sliding assembly comprises a control handle, a sliding rod and a spring, the shell assembly comprises a shell, a limiting cover, an outer protection cover and a mounting part, the mounting part is used for mounting the shell assembly on an external structure, a cavity is formed in the shell, and the limiting cover is arranged in the cavity. A spring seat is arranged at the bottom of the cavity, the limiting cover covers an opening of the cavity, the shell is fixedly connected with the limiting cover, a limiting hole corresponding to the operating handle in shape is formed in the middle of the limiting cover, the operating handle penetrates through the limiting hole in a sliding mode and is fixedly connected with the sliding rod, the control panel is installed on the shell assembly, and a sensing element is installed on the control panel. A position detection element is installed on the sliding rod, the outer side of the control handle is sleeved with an elastic protective cover, and the elastic protective cover can generate elastic deformation.

Description

Technical Field

[0001] This application relates to the field of industrial automation control device technology, and more specifically, to a cover limit linear position sensor and a power control system. Background Technology

[0002] In the fields of industrial automation and precision measurement, linear position sensors have attracted much attention due to their high accuracy and reliability. These sensors can convert changes in physical position into electrical signals, enabling precise control and monitoring of object positions.

[0003] The applicant previously filed a patent application with publication number CN220339300U, disclosing a linear position sensor and a power control system. This linear position sensor employs axial limiting; that is, under the action of a spring and a limiting shaft, an external force causes the moving device to move a certain distance within the housing assembly, thereby driving a sensing element mounted on the moving part to move accordingly. A device composed of components such as Hall effect sensors detects the position of the sensing element to control the magnitude of the electrical signal output by the sensor. The overall structure is simple, with few potential failure points; for Type III position sensors, even resetting is not required, further reducing failure points. Furthermore, it can be independently configured within the power control system, facilitating maintenance and replacement.

[0004] The aforementioned axial limit linear position sensor has an open end in the middle of the moving device, and the housing assembly also has through holes for fitment. This results in poor overall protection for the "axial limit linear sensor." Furthermore, the lack of a sealing structure at the connection between the sliding device and the housing assembly leads to poor waterproof and dustproof performance. During use, the electrical components inside the housing assembly are easily affected by dust and moisture, causing damage and reducing the lifespan of the device. Therefore, we propose a "cover limit linear position sensor and power control system." Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide a cover limit linear position sensor and a power control system to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] A cover-limiting linear position sensor includes a housing assembly, a sliding assembly, and a control board. The sliding assembly includes a control handle, a sliding rod, and a spring. One end of the sliding rod has a spring mounting hole, a limiting block, and a sensor mounting groove. The control handle is fixedly connected to the sliding rod. The housing assembly includes a housing, a limiting cover, an outer protective cover, and a mounting part. The mounting part is used to install the housing assembly onto an external structure. The housing has a cavity inside, and a spring seat is provided at the bottom of the cavity. The limiting cover covers the opening of the cavity, and the housing and the limiting cover are fixedly connected. The limiting cover has an opening in the middle for connecting the control handle. The control handle has a slidable limit hole corresponding to its shape. The control handle is slidably inserted through the limit hole and fixedly connected to the sliding rod. The control board is mounted on the housing assembly. A sensing element is installed on the control board. A position detection element is installed in the sensor mounting slot on the sliding rod. The control board is used to output electrical signals of different magnitudes according to the different positions of the position detection element sensed by the sensing element. An elastic protective cover is fitted on the outside of the control handle. The elastic protective cover can undergo elastic deformation. The elastic protective cover is placed on the outside of the cavity opening to prevent water and dust from entering the housing from the cavity opening.

[0010] As an optional solution to the technical solution of this application, one end of the control handle is provided with a limiting protrusion and the other end is provided with a pressing part, one end of the sliding rod is provided with a limiting cavity, and the limiting protrusion and the limiting cavity are inserted and engaged.

[0011] As an optional solution to the technical solution of this application, the elastic protective cover is folded in the middle, the upper part of the elastic protective cover is sealed, and a connecting cover is fixed to the lower part of the elastic protective cover. The connecting cover is sleeved on the outside of the housing assembly and is connected and fixed to the housing assembly by bolts.

[0012] As an optional solution to the technical solution of this application, the outer protective cover is fitted on the outside of the housing assembly, the bottom of the outer protective cover is provided with a wiring groove, and a sealing block is detachably connected to the bottom of the outer protective cover, the sealing block being used to seal the wiring groove.

[0013] As an optional solution of the technical solution in this application, the end of the control handle is fixedly connected to a double-ear mounting base, a roller is rotatably connected inside the double-ear mounting base, the roller has a shaft hole at its center, the double-ear mounting base has shaft holes in the radial direction of the double ears, the roller is rotatably mounted on the double-ear mounting base through the shaft and shaft hole, the bottom of the double-ear mounting base has an annular groove, the upper part of the elastic protective cover has an opening, and the upper part of the elastic protective cover is fixed in the annular groove.

[0014] As an optional solution to the technical solution of this application, the spring is disposed in the cavity of the housing, the spring is located between the sliding rod and the housing assembly, and the two ends of the spring are respectively connected to the spring mounting hole and the spring seat.

[0015] As an optional solution to the technical solution of this application, the position detection element is a magnet, the sensing element is a Hall sensor, and the magnet is coupled to the Hall sensor.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] The cover-limiting linear position sensor and power control system described in this application adopt a structure in which a sliding component and a housing component cooperate. The sensing element is set on the sliding component, and the position of the position detection element is controlled by the sliding component to control the magnitude of the electrical signal output by the sensor. The sliding component is limited by the limiting cover, which increases the sealing of the opening of the housing component. Then, an elastic protective cover is used to cover the outside of the opening of the housing component, which increases the dustproof and waterproof performance of the cover-limiting linear position sensor, enabling it to be used in harsh environments and further extending its service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the Type I cover limit linear position sensor;

[0020] Figure 2 This is a schematic diagram of the internal structure of the Type I cover limit linear position sensor;

[0021] Figure 3 This is a schematic diagram of the housing assembly structure of the Type I cover limit linear position sensor;

[0022] Figure 4 This is a schematic diagram showing the overall structure of the Type I cover limit linear position sensor.

[0023] Figure 5 This is a schematic diagram of the sliding assembly structure of the Type I cover limit linear position sensor;

[0024] Figure 6 This is a schematic diagram of the outer protective cover structure of the Type I cover limit linear position sensor;

[0025] Figure 7 This is a schematic diagram of the limit cover structure of the Type I cover limit linear position sensor;

[0026] Figure 8 This is a schematic diagram of the outer structure of the elastic protective cover of the Type I cover limit linear position sensor;

[0027] Figure 9 This is a schematic diagram of the inner structure of the elastic protective cover of the Type I cover limit linear position sensor;

[0028] Figure 10This is a schematic diagram of the overall structure of the Type II cover limit linear position sensor;

[0029] Figure 11 This is a schematic diagram showing the overall structure of the Type II cover limit linear position sensor.

[0030] Figure 12 This is a diagram showing the first operational state of a power control system.

[0031] Figure 13 This is a second usage state diagram of a power control system;

[0032] Figure 14 This is a third usage state diagram of a power control system;

[0033] Figure 15 This is a fourth usage state diagram of a power control system;

[0034] In the diagram: 1. Housing assembly; 101. Housing; 2. Sliding assembly; 201. Control handle; 202. Sliding rod; 3. Control panel; 4. Elastic protective cover; 401. Connecting cover; 5. Position detection element; 6. Limit cover; 601. Limit hole; 7. Outer protective cover; 701. Wiring groove; 702. Sealing block; 8. Double-ear mounting base; 9. Roller; 10. Spring; 11. Control lever; 12. Base; 13. Pedal; 14. Control box. Detailed Implementation

[0035] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0036] Example 1:

[0037] Please see Figures 1 to 10This application provides a Type I cover limiting linear position sensor, including a housing assembly 1, a sliding assembly 2, and a control plate 3. The sliding assembly 2 includes an operating handle 201, a sliding rod 202, and a spring 10. One end of the operating handle 201 has a limiting protrusion, and the other end has a pressing part. One end of the sliding rod 202 has a limiting cavity, and the limiting protrusion and the limiting cavity are inserted into each other. The upper end of the operating handle 201 is detachably connected to the pressing part. Preferably, the pressing part is inserted into the upper end of the operating handle 201. One end of the sliding rod 202 has a spring mounting hole, a limiting block, and a sensor mounting groove. The operating handle 201 and the sliding rod 202 are connected and fixed. The housing assembly 1 includes a housing 101, a limiting cover 6, an outer protective cover 7, and a mounting part. The mounting part is used to install the housing assembly 1 onto an external structure. The housing 101 has an internal cavity with a spring seat at the bottom. A limiting cover 6 covers the opening of the cavity and the opening of the housing 101. The housing 101 is fixedly connected to the limiting cover 6. A limiting hole 601 with a shape corresponding to the shape of the operating handle 201 is opened in the middle of the limiting cover 6. The operating handle 201 slides through the limiting hole 601 and is fixedly connected to the sliding rod 202. The control board 3 is installed on the housing assembly 1. A sensing element is installed on the control board 3. A position detection element 5 is installed in the sensor mounting slot on the sliding rod 202. The control board 3 is used to output electrical signals of different magnitudes according to the different positions of the position detection element 5 sensed by the sensing element. Preferably, the position detection element 5 is a magnet, and the sensing element is a Hall sensor. The magnet and the Hall sensor are coupled.

[0038] An elastic protective cover 4 is fitted on the outside of the control handle 201. The elastic protective cover 4 can undergo elastic deformation. The elastic protective cover 4 is placed on the outside of the cavity opening to prevent water and dust from entering the housing 101 from the cavity opening. The user can press the pressing part at the end of the control handle 201 by pressing the elastic protective cover 4 to change the magnitude of the electrical signal output by the control board 3, thereby controlling the power system.

[0039] Preferably, the elastic protective cover 4 is folded in the middle, the upper part of the elastic protective cover 4 is sealed, and a connecting cover 401 is fixed to the lower part of the elastic protective cover 4. The connecting cover 401 is sleeved on the outside of the housing assembly 1 and is connected and fixed to the housing assembly 1 by bolts. Figure 8 and Figure 9 As shown.

[0040] Preferably, the cross-sectional dimension of the operating handle 201 is smaller than the cross-sectional dimension of the sliding rod 202. This limiting method prevents the sliding rod 202 from moving out of the limiting hole 601 of the limiting cover 6 and increases the sealing performance at the opening of the housing assembly 1, such as... Figure 5 and Figure 7 As shown.

[0041] Preferably, the outer protective cover 7 is fitted onto the outside of the housing assembly 1. A wiring groove 701 is provided at the bottom of the outer protective cover 7, and a sealing block 702 is detachably connected to the bottom of the outer protective cover 7. The sealing block 702 is used to seal the wiring groove 701. Figure 6 As shown.

[0042] Preferably, the Type I cover limit linear position sensor also includes a self-resetting element. A spring 10 is disposed within a cavity in the housing 101, located between the sliding rod 202 and the housing assembly 1. Both ends of the spring 10 are connected to a spring mounting hole and a spring seat, respectively. Figure 5 As shown.

[0043] Example 2:

[0044] Please see Figures 10 to 11 This application provides a Type II cover limiting linear position sensor, which differs from the Type I cover limiting linear position sensor described in Embodiment 1 in that: a double-ear mounting base 8 is fixedly connected to the end of the operating handle 201, a roller 9 is rotatably connected inside the double-ear mounting base 8, the roller 9 has a shaft hole in the center, the double-ear mounting base 8 has a shaft hole in the radial direction of the double ears, the roller 9 is rotatably mounted on the double-ear mounting base 8 through the shaft and shaft hole, the bottom of the double-ear mounting base 8 has an annular groove, the upper part of the elastic protective cover 4 has an opening, and the upper part of the elastic protective cover 4 is fixed in the annular groove.

[0045] Example 3:

[0046] Please see Figures 12 to 13 This application provides a power control system that uses a type I cover limit linear position sensor described in Embodiment 1. The power control system includes a control lever 11 or a control box 14. The type I cover limit linear position sensor is fixedly installed on the control lever 11 or the control box 14. The control handle 201 and the elastic protective cover 4 are both exposed outside the control lever 11 or the control box 14. By manually pressing, the pressing part at the end of the control handle 201 changes the magnitude of the electrical signal output by the control board 3, thereby realizing the control of the power system.

[0047] Example 4:

[0048] This application provides a power control system that uses a type II cover limit linear position sensor described in Embodiment 2. The power control system includes a base 12 and a pedal 13, which are rotatably connected. The cover limit linear position sensor is fixedly installed on the base 12, and the roller 9 abuts against the bottom of the pedal 13.

[0049] Preferably, the base 12 is provided with a pin, a torsion spring and a sensor mounting hole. The base 12 is also provided with a pin hole, an adjusting screw seat and a torsion spring fixing hole. The pedal 13 is provided with a pedal pin hole. The pin passes through the pedal pin hole, the torsion spring and the base pin hole and then connects to the pedal. The pedal can rotate at a certain angle.

[0050] like Figure 14 As shown, the pedal 13, the Type II cover limit linear position sensor, and the base 12 are arranged in a triangular shape.

[0051] like Figure 15 As shown, the Type II cover limit linear position sensor is located on one side of the base 12. Both the Type II cover limit linear position sensor and the base 12 are vertically positioned. The pedal 13 is rotatably connected to the upper end of the base 12, and the bottom surface of the pedal 13 abuts against the roller 9. Note: "vertical positioning" here does not refer to a perfectly vertical position, but also includes a slightly inclined vertical positioning direction. The pedal 13 includes a straight section that contacts the roller 9, a downwardly extending connecting section, and a downwardly inclined stepping section. The downwardly extending connecting section and the downwardly inclined stepping section are located on both sides of the straight section.

[0052] When in operation, when the pedal of the power control device that has been positioned and adjusted is stepped on or pressed, the pedal 13 presses down the roller 9 in the double-ear mounting seat 8. The roller 9 drives the sliding component 2 of the Type II position sensor to move down, and the sliding rod 202 drives the detection magnet to move. The magnetic induction Hall chip detects the magnetic force at different positions of the magnet strip and outputs different electrical signals.

[0053] When the pedal 13 is released or the force on the pedal 13 is reduced, the pedal 13 returns to its original position under the action of the torsion spring. The Type II cover limit linear position sensor, under the action of its own spring, drives the position of the detection magnet to change according to the change in the force on the pedal, so that the Type II cover limit linear position sensor outputs different electrical signals according to the position of the detection magnet; thus, the voltage output adjustment is conveniently realized, thereby realizing precise control of the operating speed and other linear positions of industrial equipment, including motor vehicles.

[0054] In terms of electrical control, this embodiment uses a Hall sensor and a detection magnet to acquire position signals. Different electrical signals are output to the ECU of the power system control device according to the different detected positions. The ECU outputs different voltage signals according to the different position signals, thereby controlling the operation of the corresponding output motor and other components.

[0055] Due to different application scenarios, sometimes a power control system only needs one control device, while sometimes a power system needs two or more control devices. Existing power systems, for various reasons, only reserve one or two control interfaces. However, in reality, some power application scenarios require more than two control devices, which can be achieved through an adapter. The adapter includes an adapter box, an adapter circuit board inside the adapter box, adapter holes on the box body, and a cover on the top of the adapter box 41. When it is necessary to connect one or two or more position sensors to control the power, the signal line of the power control system is introduced into the adapter circuit board in the adapter box, and the outgoing signal line passes through the adapter hole. The adapter circuit board then connects one or two or more position sensors as needed to control the power.

[0056] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cover-limiting linear position sensor, characterized in that: The system includes a housing assembly (1), a sliding assembly (2), and a control plate (3). The sliding assembly (2) includes a control handle (201), a sliding rod (202), and a spring (10). One end of the sliding rod (202) has a spring mounting hole, a limiting block, and a sensor mounting groove. The control handle (201) is connected and fixed to the sliding rod (202). The housing assembly (1) includes a housing (101), a limiting cover (6), an outer protective cover (7), and a mounting part. The mounting part is used to install the housing assembly (1) onto an external structure. The housing (101) has a cavity inside, and a spring seat is provided at the bottom of the cavity. The limiting cover (6) covers the opening of the cavity. The housing (101) and the limiting cover (6) are fixedly connected. The limiting cover (6) has an opening in the middle for connecting with the control handle (10). 201) A limiting hole (601) with a corresponding shape is provided. The operating handle (201) slides through the limiting hole (601) and is fixedly connected to the sliding rod (202). The control plate (3) is installed on the housing assembly (1). A sensing element is installed on the control plate (3). A position detection element (5) is installed in the sensor mounting groove on the sliding rod (202). The control plate (3) is used to output electrical signals of different magnitudes according to the different positions of the position detection element (5) sensed by the sensing element. An elastic protective cover (4) is provided on the outside of the operating handle (201). The elastic protective cover (4) can undergo elastic deformation. The elastic protective cover (4) is placed on the outside of the cavity opening to prevent water and dust from entering the housing (101) from the cavity opening.

2. The cover limiting linear position sensor according to claim 1, characterized in that: The control handle (201) has a limiting protrusion at one end and a pressing part at the other end. The sliding rod (202) has a limiting cavity at one end, and the limiting protrusion and the limiting cavity are inserted into each other.

3. A cover limiting linear position sensor according to claim 1, characterized in that: The elastic protective cover (4) is folded in the middle and sealed at the top. A connecting cover (401) is fixed at the bottom of the elastic protective cover (4). The connecting cover (401) is sleeved on the outside of the housing assembly (1) and is connected and fixed to the housing assembly (1) by bolts.

4. A cover limiting linear position sensor according to claim 1, characterized in that: The outer protective cover (7) is fitted on the outside of the housing assembly (1). The bottom of the outer protective cover (7) is provided with a wiring groove (701). A sealing block (702) is detachably connected to the bottom of the outer protective cover (7). The sealing block (702) is used to seal the wiring groove (701).

5. A cover limiting linear position sensor according to claim 1, characterized in that: The end of the control handle (201) is fixedly connected to a double-ear mounting base (8). A roller (9) is rotatably connected inside the double-ear mounting base (8). The roller (9) has a shaft hole in its center. The double ears of the double-ear mounting base (8) have shaft holes in their radial direction. The roller (9) is rotatably mounted on the double-ear mounting base (8) through the shaft and shaft hole. The bottom of the double-ear mounting base (8) has an annular groove. The upper part of the elastic protective cover (4) has an opening. The upper part of the elastic protective cover (4) is fixed in the annular groove.

6. A cover limiting linear position sensor according to claim 5, characterized in that: The spring (10) is disposed in the cavity of the housing (101). The spring (10) is located between the sliding rod (202) and the housing assembly (1). The two ends of the spring (10) are respectively connected to the spring mounting hole and the spring seat.

7. A cover limiting linear position sensor according to claim 1, characterized in that: The position detection element (5) is a magnet, the sensing element is a Hall sensor, and the magnet is coupled to the Hall sensor.

8. A power operating system, characterized in that: The cover limiting linear position sensor as described in any one of claims 1-4 and 6-7 is further comprising a control lever (11) or a control box (14), wherein the cover limiting linear position sensor is fixedly mounted on the control lever (11) or the control box (14), and both the control handle (201) and the elastic protective cover (4) protrude outside the control lever (11) or the control box (14).

9. A power operating system, characterized in that: The cover limiting linear position sensor as described in claim 5 further includes a base (12) and a pedal (13), the base (12) and the pedal (13) being rotatably connected, the cover limiting linear position sensor being fixedly installed on the base (12), and the roller (9) abutting against the bottom of the pedal (13).

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