Electric control handle with middle-position mechanical dead zone
By setting a gap between the connecting rod assembly of the electronic control handle and the lever, and combining Hall sensors and magnets, the existing electronic control handle has solved the problems of high cost and short service life, and the effective realization of the median mechanical dead zone function is achieved.
Patent Information
- Application Number
- CN202421701109.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-18
AI Technical Summary
When existing electronic control handles achieve median mechanical dead zones, multi-point calibration equipment and programmable chips are required, resulting in increased costs and shorter service life.
An electronically controlled handle is designed. By setting a gap between the connecting rod assembly and the lever X and the lever Y, combined with a Hall sensor and a magnet, the handle's dead zone function within a specific operating angle is achieved, avoiding the need for multi-point calibration.
The median mechanical dead zone function of the handle is realized, reducing production costs and extending the service life of the Hall sensor.
Smart Images
Figure CN222813094U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electric control handle with a mid-position mechanical dead zone, belonging to the technical field of engineering machinery and automation equipment control devices. Background Art
[0002] In industries such as automation control and engineering machinery, the electric control handle is an important component. Especially with the electrification transformation of engineering equipment, the electric control handle is more widely used. In the use of the electric control handle, the mid-position dead zone is an important parameter. At present, the following two solutions are adopted for the electric control handles on the market: 1. Using a sliding rheostat, the resistance film structure on the PCBA (printed circuit board) can be designed to achieve that the handle signal does not change within a certain angle range, that is, the handle dead zone angle. The disadvantage is that the carbon brush and the resistance film are constantly rubbing, and the life is generally low. 2. Using a programmable Hall sensor, this solution requires the use of automated calibration equipment to perform multi-point calibration within the operating angle range to achieve signal stability within a certain mechanical angle. The disadvantage is that it requires the use of programmable chips and the investment in automated equipment, which greatly increases the cost. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an electric control handle with a mid-position mechanical dead zone, which does not require multi-point calibration equipment and does not increase product production costs. At the same time, the Hall sensor is still used and the non-contact Hall sensor has a longer service life.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] An electric control handle with a neutral mechanical dead zone comprises a base, a guide element is arranged on the base, a connecting rod assembly is arranged in the guide element, an elastic element for rebounding the connecting rod assembly is arranged on the guide element, a handle upper end assembly is installed on the upper end of the connecting rod assembly, a fixed shell is arranged below the base, a lever X and a lever Y are arranged in the fixed shell, the lever X and the lever Y are arranged on the lower side of the connecting rod assembly, a certain gap is respectively formed between the connecting rod assembly and the lever X and the lever Y, a reset element is arranged on the lever X and the lever Y, a magnet is arranged on the lever X and the lever Y, a printed circuit board is arranged on the fixed shell, and a Hall sensor concentric with the position of the magnet is arranged on the printed circuit board.
[0006] The guide element is a step-shaped structure, the lower end of the elastic element is installed on the step surface of the guide element, a retaining spring is embedded in the connecting rod assembly, a baffle plate located below the retaining spring is sleeved on the connecting rod assembly, and the upper end of the elastic element contacts the bottom of the baffle plate.
[0007] The elastic element includes a spring.
[0008] The connecting rod assembly is equipped with a dust cover located between the handle upper end assembly and the base.
[0009] The reset element comprises a torsion spring or a spring ball.
[0010] The lever X and the lever Y are connected to the magnet by gluing or injection molding.
[0011] The connecting rod assembly and the handle upper end assembly are connected by a buckle, a retaining spring or a screw.
[0012] A bottom shell assembly for wrapping the printed circuit board is assembled under the base.
[0013] Beneficial effects of the utility model: the utility model provides an electric control handle with a mid-position mechanical dead zone, wherein the lever X and the lever Y are mounted on the lower side of the connecting rod assembly, and a certain gap is respectively provided between the connecting rod assembly and the lever X and the lever Y, so that the handle will not drive the magnet on the lever to rotate within a specific operating angle, thereby realizing the function of the handle dead zone, and does not require multi-point calibration equipment, does not increase product production costs, and still uses a Hall sensor, which has a longer service life of a non-contact Hall sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the electric control handle with a mid-position mechanical dead zone of the utility model;
[0015] Figure 2 It is a partial structural schematic diagram of the utility model;
[0016] Figure 3 It is a schematic cross-sectional diagram of the middle dead zone of the electric control handle with the middle mechanical dead zone of the utility model;
[0017] Figure 4 It is a schematic diagram of the reset structure of the electric control handle lever with a mid-position mechanical dead zone of the utility model;
[0018] Figure 5 The utility model is a schematic diagram of the arrangement of the magnet and the Hall sensor of the electric control handle with a mid-position mechanical dead zone.
[0019] The reference numerals in the figure are as follows: 1-handle upper end assembly; 2-dust cover; 3-elastic element; 4-guide element; 5-base; 6-reset element; 7-lever X; 8-connecting rod assembly; 9-lever Y; 10-bottom shell assembly; 11-printed circuit board; 12-fixed shell; 13-magnet; 14-circlip; 15-baffle. DETAILED DESCRIPTION
[0020] Example 1
[0021] like Figures 1 to 5 As shown, the utility model discloses an electric control handle with a mid-position mechanical dead zone, including a base 5, a guide element 4 is arranged on the base 5, a connecting rod assembly 8 is arranged in the guide element 4, an elastic element 3 for rebounding the connecting rod assembly 8 is arranged on the guide element 4, a handle upper end assembly 1 is installed on the upper end of the connecting rod assembly 8, the guide element 4 cooperates with the base 5 to constrain the operating direction and angle range of the handle, and the elastic element 3 realizes the self-reset of the handle. A fixed housing 12 is installed below the base 5, a lever X7 and a lever Y9 are arranged in the fixed housing 12, the lever X7 and the lever Y9 are installed on the lower side of the connecting rod assembly 8, the connecting rod assembly 8 has a rotating structure (spherical or cross-axis shape) and an operating rod structure, and a certain gap is respectively provided between the connecting rod assembly 8 and the lever X7 and the lever Y9, and the gap value is adjusted according to the design requirements. The lever X7 and the lever Y9 are equipped with a reset element 6, which is used to enable the lever X7 and the lever Y9 to return to the initial position. The lever X7 and the lever Y9 are equipped with magnets 13 , the fixed housing 12 is equipped with a printed circuit board 11 , and the printed circuit board 11 is provided with a Hall sensor which is concentric with the position of the magnet 13 .
[0022] The working principle of the utility model is as follows: when the upper end assembly 1 of the operating handle is operated, due to the gaps between the connecting rod assembly 8 and the lever X7 and the lever Y9, the corresponding Figure 3 In the middle B position, the connecting rod assembly 8 will drive the lever X7 and the lever Y9 to rotate only after the operation reaches a certain angle, and the Hall sensor on the printed circuit board 11 will sense the change in the magnetic field and output the corresponding signal. Among them, the range where the connecting rod assembly 8 does not drive the lever X7 and the lever Y9 to rotate, and the handle signal does not change, is the dead zone range of the electric control handle, corresponding to Figure 3 Middle A position.
[0023] The utility model ensures that the handle will not drive the magnet on the lever to rotate within a specific operating angle by providing a certain gap between the connecting rod assembly and the lever X and the lever Y, thereby realizing the dead zone function of the handle, and does not require multi-point calibration equipment, thereby not increasing the production cost of the product. Meanwhile, the Hall sensor is still used, and the non-contact Hall sensor has a longer service life.
[0024] Example 2
[0025] like Figures 1 to 5As shown, the utility model discloses an electric control handle with a mid-position mechanical dead zone, including a base 5, a guide element 4 is arranged on the base 5, a connecting rod assembly 8 is arranged in the guide element 4, an elastic element 3 for rebounding the connecting rod assembly 8 is arranged on the guide element 4, a handle upper end assembly 1 is installed on the upper end of the connecting rod assembly 8, and the connecting rod assembly 8 and the handle upper end assembly 1 are connected by a buckle, a retaining spring or a screw. The guide element 4 cooperates with the base 5 to constrain the operating direction and angle range of the handle, and the elastic element 3 realizes the self-reset of the handle. The guide element 4 is a step-shaped structure, the lower end of the elastic element 3 is installed on the step surface of the guide element 4, the connecting rod assembly 8 is inlaid with a retaining spring 14, and the connecting rod assembly 8 is sleeved with a baffle 15 located below the retaining spring 14, and the upper end of the elastic element 3 contacts the bottom of the baffle 15. The elastic element 3 is specifically a spring. The connecting rod assembly 8 is equipped with a dust cover 2 located between the handle upper end assembly and the base 5, and the interference fit realizes the sealing.
[0026] A fixed housing 12 is installed below the base 5. A lever X7 and a lever Y9 are arranged inside the fixed housing 12. The lever X7 and the lever Y9 are installed on the lower side of the connecting rod assembly 8. The connecting rod assembly 8 has a rotating structure (spherical or cross-axis shape) and an operating rod structure. There is a certain gap between the connecting rod assembly 8 and the lever X7 and the lever Y9, and the gap value is adjusted according to design requirements. The lever X7 and the lever Y9 are equipped with a reset element 6, which is used to enable the lever X7 and the lever Y9 to return to the initial position. The reset element 6 can be an elastic reset part such as a torsion spring, a spring ball, etc., and is specifically a torsion spring in this embodiment.
[0027] The lever X7 and the lever Y9 are equipped with magnets 13, and the lever X7 and the lever Y9 are connected to the magnets 13 by glue bonding or injection molding. The fixed housing 12 is equipped with a printed circuit board 11, and the printed circuit board 11 is provided with a Hall sensor concentric with the position of the magnet 13. The bottom shell assembly 10 for wrapping the printed circuit board 11 is installed under the base 5. There is a sealing structure between the bottom shell assembly 10 and the base 5, which can protect the printed circuit board 11.
[0028] The utility model first installs the lever X7 on the connecting rod assembly 8, and then assembles the lever Y9 on the connecting rod assembly 8. The upper end of the above-assembled assembly passes through the base 5, and the fixed shell 12 is assembled on the base 5. The magnet 13 is assembled on the lever X7 and the lever Y9. The torsion spring 6 is assembled on the side of the lever X7 and the lever Y9 where the magnet 13 is not assembled. The guide element 4 is assembled to the upper end of the connecting rod assembly 8, and then one end of the elastic element 3 is assembled to the guide element 4, and the other end is fixed to the connecting rod assembly 8. The dust cover 2 is assembled to the connecting rod assembly 8, and the handle upper end assembly 1 is assembled to the connecting rod assembly 8. The printed circuit board 11 is assembled to the fixed shell 12, and finally the bottom shell assembly 10 is assembled to the base 5.
[0029] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. An electric control handle with a mid-position mechanical dead zone, characterized in that: The invention comprises a base (5), wherein a guide element (4) is arranged on the base (5), a connecting rod assembly (8) is arranged inside the guide element (4), an elastic element (3) for rebounding the connecting rod assembly (8) is arranged on the guide element (4), a handle upper end assembly (1) is installed on the upper end of the connecting rod assembly (8), a fixed housing (12) is arranged below the base (5), a lever X (7) and a lever Y (9) are arranged inside the fixed housing (12), and the lever X (7) and the lever Y (9) are arranged on the upper end of the connecting rod assembly (8). The rod Y (9) is mounted on the lower side of the connecting rod assembly (8), and a certain gap is respectively formed between the connecting rod assembly (8) and the shifting rod X (7) and the shifting rod Y (9). The shifting rod X (7) and the shifting rod Y (9) are equipped with a reset element (6), and the shifting rod X (7) and the shifting rod Y (9) are equipped with a magnet (13). The fixed housing (12) is equipped with a printed circuit board (11), and the printed circuit board (11) is provided with a Hall sensor which is concentric with the position of the magnet (13).
2. The electric control handle with a mid-position mechanical dead zone according to claim 1, characterized in that: The guide element (4) is a step-shaped structure, the lower end of the elastic element (3) is mounted on the step surface of the guide element (4), a retaining spring (14) is embedded in the connecting rod assembly (8), a baffle (15) located below the retaining spring (14) is sleeved on the connecting rod assembly (8), and the upper end of the elastic element (3) is in contact with the bottom of the baffle (15).
3. The electric control handle with a mid-position mechanical dead zone according to claim 2, characterized in that: The elastic element (3) comprises a spring.
4. The electric control handle with a mid-position mechanical dead zone according to claim 1, characterized in that: The connecting rod assembly (8) is equipped with a dust cover (2) located between the handle upper end assembly and the base (5).
5. The electric control handle with a neutral mechanical dead zone according to claim 1, characterized in that: The reset element (6) comprises a torsion spring or a spring ball.
6. The electric control handle with a neutral mechanical dead zone according to claim 1, characterized in that: The lever X (7) and the lever Y (9) are connected to the magnet (13) by means of glue bonding or injection molding.
7. The electric control handle with a neutral mechanical dead zone according to claim 1, characterized in that: The connecting rod assembly (8) and the handle upper end assembly (1) are connected by means of a buckle, a retaining spring or a screw.
8. The electric control handle with a neutral mechanical dead zone according to claim 1, characterized in that: A bottom shell component (10) for wrapping the printed circuit board (11) is assembled below the base (5).