A hand throttle manipulator
By using a mechanical limiting structure in the manual throttle controller, where a limiting ring engages with the inclined surface of the housing, the rotation range of the magnetic component is limited, solving the problem of uncontrollable rotation angle in existing technologies and achieving higher control precision and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGFENG MORSE CONTROL ROPE SHANGHAI
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-02
AI Technical Summary
Existing manual throttle controllers, due to the fact that the rotating shaft can drive the magnetic components to rotate 360° without restriction, cannot effectively constrain the rotation angle. This causes the electrical signal output by the Hall sensor unit to exceed the preset range, reducing control accuracy and potentially leading to the risk of misoperation, making it difficult to meet the safety control requirements in specific scenarios.
By using the cooperation between the protrusion on the limiting ring and the symmetrical inclined surface of the inner wall of the outer shell cavity, the rotation range of the magnetic component is limited to a specific angle. The position and angle of the inclined surface are adjusted by the mechanical limiting structure to adapt to the maximum angle requirements of the target in different scenarios.
It significantly improves the adaptability of the controller in specific application scenarios, enhances control precision, reduces the risk of misoperation, and meets the safety control requirements in specific scenarios.
Smart Images
Figure CN224311601U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of throttle control devices, and particularly relates to a manual throttle control device. Background Technology
[0002] Existing manual throttle controllers typically employ an electromagnetic induction-based angle detection scheme. Their basic structure includes a rotating shaft fixedly connected to the operating handle, a magnetic component mounted on the rotating shaft, and a Hall effect sensor unit corresponding to the position of the magnetic component. During operation, the user drives the rotating shaft to rotate via the operating handle, causing the magnetic component to rotate synchronously. The Hall effect sensor unit detects changes in the magnetic field strength or direction, converting the rotation angle into an electrical signal, thereby enabling real-time monitoring and control of the throttle opening.
[0003] However, the above solutions have significant limitations: existing rotating shafts can typically drive magnetic components to rotate 360° without restriction. While this design can meet some scenarios requiring full-angle adjustment, in many specific applications, users need to strictly limit the maximum rotation angle of the throttle within a target range (e.g., 0°–54°) to avoid excessive power output, equipment damage, or safety accidents due to over-operation. Existing 360° rotation structures cannot effectively constrain the rotation angle of the magnetic components. This not only causes the electrical signal output by the Hall sensor unit to exceed the preset effective range (e.g., continuing to output a signal even when the target maximum angle is exceeded), reducing control accuracy, but also may lead to the risk of misoperation due to redundant operating strokes, making it difficult to meet the safety control requirements of specific scenarios. Utility Model Content
[0004] Based on this, a manual throttle controller is provided to address the aforementioned technical problems.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A manual throttle controller includes a housing with a cavity, a shaft passing through the cavity in the front-rear direction of the housing, a hand-operated component connected to the front end of the shaft, a magnetic component fixed to the rear end of the shaft, and a Hall effect sensor unit for sensing changes in the magnetic field of the magnetic component. The housing cavity has two symmetrically arranged inclined surfaces on its circumferential inner wall. A concentric limiting ring is fixed on the shaft and located within the cavity. The circumferential surface of the limiting ring forms a protrusion for being stopped by the corresponding inclined surface during clockwise or counterclockwise rotation with the shaft. The protrusion is located between the two inclined surfaces.
[0007] This invention utilizes the cooperation between the protrusion on the limiting ring and the symmetrical inclined surface of the inner wall of the outer shell cavity. When the shaft core drives the magnetic component to rotate clockwise or counterclockwise, the protrusion is stopped by the inclined surface in the corresponding direction, thereby strictly limiting the rotation range of the magnetic component to the angle range between the two inclined surfaces. This mechanical limiting structure can adjust the position and angle of the inclined surfaces according to actual needs, flexibly adapting to the limitation requirements of "maximum target angle" in different scenarios, significantly improving the adaptability of the manipulator to specific application scenarios. Attached Figure Description
[0008] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:
[0009] Figure 1 A three-dimensional structural diagram of a manual throttle controller provided for an embodiment of this utility model;
[0010] Figure 2 An exploded view of a manual throttle controller provided for an embodiment of this utility model;
[0011] Figure 3 This is a radial sectional view of the rear housing according to an embodiment of the present invention;
[0012] Figure 4 This is a three-dimensional structural diagram of the rear housing according to an embodiment of the present utility model;
[0013] Figure 5 This is a three-dimensional structural diagram of the shaft core according to an embodiment of the present utility model. Figure 1 ;
[0014] Figure 6 This is a three-dimensional structural diagram of the shaft core according to an embodiment of the present utility model. Figure 2 ;
[0015] Figure 7 This is an axial sectional view of an embodiment of the present utility model;
[0016] Figure 8 This is a schematic diagram of the magnetic component fixing structure fixed to the rear end of the shaft core according to an embodiment of the present invention;
[0017] Figure 9 This is a three-dimensional structural diagram of the magnetic component fixing structure according to an embodiment of the present invention. Figure 1 ;
[0018] Figure 10 This is a schematic diagram of the structure of the disk body of the magnetic component fixing structure according to an embodiment of the present utility model;
[0019] Figure 11 This is a three-dimensional structural diagram of the magnetic component fixing structure according to an embodiment of the present invention. Figure 2 . Detailed Implementation
[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.
[0021] like Figure 1 , Figure 2 and Figure 8 As shown, this application provides a manual throttle controller, including a housing 1100, a shaft core 1200, a hand-operated component 1300, a magnetic component 1400, a magnetic component fixing structure 1500, a limiting ring 1600, a retaining ring 1700, an elastic self-recovering component 1800, a washer 1900, and a Hall sensor unit 1999.
[0022] The outer casing 1100 consists of a front cover 1110 and a rear casing 1120, which are fixed together by bolts.
[0023] like Figure 1 As shown, the front cover 1110 has a mounting hole 1111 and a through hole. The mounting hole 1111 is used to mount the actuator to the vehicle, and the through hole is used for the shaft core 1200 to pass through.
[0024] The rear housing 1120 is cylindrical and forms a cavity inside after being fixed to the front cover 1110.
[0025] like Figure 3 As shown, the upper part of the circumferential inner wall of the cavity has two inclined surfaces 1121, which are symmetrically arranged along the vertical center line of the rear housing 1120. The lower part of the circumferential inner wall of the cavity also has two inclined surfaces 1121, which are symmetrically arranged along the vertical center line of the rear housing 1120.
[0026] like Figure 4 As shown, the rear end face of the rear housing 1120 forms a stepped hole 1122 through which the shaft core 1200 passes.
[0027] The shaft core 1200 passes through the outer shell 1100 in the front-to-back direction via the stepped hole 1122, the cavity, and the through hole of the front end cover 1110.
[0028] like Figure 5 and Figure 6As shown, the rear end of the shaft core 1200 forms a concentric disc-shaped portion 1210, which is located in the stepped hole 1122. Its rear end face has an axial pin hole 1211 and four positioning grooves 1212. The pin hole 1211 is concentric with the disc-shaped portion 1210, and the four positioning grooves 1212 are arranged in a cross shape.
[0029] like Figure 5 As shown, the portion of the shaft core 1200 located within the cavity forms an annular groove 1220, a first segment 1230, and a second segment 1240 from front to back, with the annular groove 1220 and the first segment 1230 being adjacent to each other.
[0030] like Figure 1 As shown, the manual component 1300 is connected to the front end of the shaft core 1200, which can be a handle or a knob.
[0031] like Figure 8 As shown, the magnetic component 1400 is composed of two magnetic steel sheets 1410.
[0032] like Figure 8 As shown, the magnetic component fixing structure 1500 is fixed to the rear end of the shaft core 1200 and is used to fix two magnetic steel plates 1410. It includes a disk body 1510 and a magnetic field shielding ring 1520. See [reference needed] Figures 9-11 .
[0033] like Figure 9 As shown, the front end face of the disc body 1510 has a pin 1511 and two positioning protrusions 1512. The pin 1511 is inserted into the pin hole 1211, and the two positioning protrusions 1512 are symmetrically arranged along the pin 1511, as shown. Figure 6 The two positioning protrusions 1512 can be inserted into the left and right positioning grooves 1212 or into the upper and lower positioning grooves 1212, thereby positioning the magnet 1410 in two directions.
[0034] The disc body 1510 and the disc-shaped part 1210 are concentrically fixed by bolts.
[0035] like Figure 10 As shown, the rear end face of the disk body 1510 forms two axially extending protrusions 1513. The two protrusions 1513 are arranged symmetrically along an axisymmetric line L passing through the center of the disk body 1510. Each protrusion 1513 forms a first plane 1513a and a second plane 1513b perpendicularly connected to the first plane 1513a on its left and right sides relative to the other protrusion 1513. The first plane 1513a faces the other protrusion 1513 and is parallel to the axisymmetric line L. The second plane 1513b is located inside the first plane 1513a along the axisymmetric line L.
[0036] like Figure 11As shown, the magnetic field shielding ring 1520 is fitted over the two protrusions 1513, and two opposing third planes 1521 are formed on its inner wall. The two third planes 1521 are symmetrically arranged and are parallel to the second plane 1513b. The first plane 1513a, the second plane 1513b, and the third plane 1521 on the same side together form a slot C, for a total of four slots C. The axial length of each slot C is at least equal to the width of the magnetic steel sheet 1410, and the lateral width is equal to the thickness of the magnetic steel sheet. The two slots C on the same side of the two protrusions 1513 are opposite each other, allowing the two ends of the magnetic steel sheet 1410 to be inserted. Thus, the two magnetic steel sheets 1410 are respectively engaged in the corresponding slots C. See [reference needed]. Figure 8 .
[0037] Among them, the disk body 1510 is an injection molded part, the magnetic field shielding ring 1520 can prevent the magnetic field signal from being interfered with and is made of steel, and the magnetic steel sheet 1410 is made of samarium cobalt magnetic material.
[0038] Based on the above-mentioned fixing structure, the two ends of the magnet can be precisely inserted into the two opposite slots, which not only plays the role of stabilizing and fixing the magnet, but also prevents the magnetic field signal from being interfered with by external signals under the action of the magnetic field shielding ring 1520.
[0039] like Figure 8 As shown, the limiting ring 1600 is concentrically fitted onto the first segment 1230. Both its inner ring and the radial cross-section of the first segment 1230 are hexagonal. This allows the first segment 1230 of the shaft core 1200 to drive the limiting ring 1600 to rotate. The retaining ring 1700 is embedded in the annular groove 1220 to provide a stop at the front of the limiting ring 1600. Of course, the radial cross-section of the first segment 1230 can also be designed as a non-circular shape other than hexagonal.
[0040] like Figure 3 As shown, the circumferential surface of the limiting ring 1600 forms two symmetrical protrusions 1610. The upper protrusion 1610 is located between two inclined surfaces 1121 on the upper part of the inner wall of the cavity, and the lower protrusion 1610 is located between two inclined surfaces 1121 on the lower part of the inner wall of the cavity. Thus, the protrusions 1610 can be stopped by the inclined surfaces 1121 on both sides during the clockwise or counterclockwise rotation of the shaft core 1200, thereby limiting the rotation angle of the magnetic component 1400 to the target maximum angle, such as 54 degrees. There is a logical relationship between the magnetic induction intensity and the rotation angle. Within this 54-degree range, the magnetic induction intensity is relatively consistent. If the target maximum angle is too large or too small, it will result in the magnetic induction intensity being too large or too small, which is not conducive to signal transmission.
[0041] Of course, the number of protrusions 1610 can be only one, and correspondingly, the two inclined surfaces 1121 can be omitted.
[0042] Therefore, through the cooperation between the protrusion on the limiting ring and the symmetrical inclined surface of the inner wall of the outer shell cavity, when the shaft core drives the magnetic component to rotate clockwise or counterclockwise, the protrusion will be stopped by the inclined surface in the corresponding direction (for example, when rotating clockwise, the protrusion touches the right inclined surface; when rotating counterclockwise, it touches the left inclined surface), thus strictly limiting the rotation range of the magnetic component to the angle range between the two inclined surfaces (such as 0° to 54°). The position and angle of the inclined surfaces can be adjusted according to actual needs, flexibly adapting to the limitation requirements of the "maximum target angle" in different scenarios, significantly improving the adaptability of the manipulator to specific application scenarios.
[0043] like Figure 7 As shown, the elastic self-resetting member 1800 is axially pre-compressed between the rear end inner wall of the rear housing 1120 and the limiting ring 1600, and is passed through by the shaft core 1200. The washer 1900 is located between the rear end of the elastic self-resetting member 1800 and the rear end inner wall of the housing 1120. The washer 1900 is fitted on the second section 1240. The inner ring of the washer and the radial cross section of the second section 1240 are both waist-shaped, so that the washer 1900 can rotate with the shaft core 1200 and can slide axially back and forth.
[0044] Of course, the radial section of the second segment 1240 can also be designed as a non-circular shape other than a waist shape.
[0045] Based on the above structure, the shaft core 1200 is subjected to a forward pressing force from the elastic self-recovering member 1800 through the limiting ring 1600, thereby causing the disc-shaped portion 1210 of the shaft core 1200 to press against the step of the stepped hole 1122. At the same time, the washer 1900 is pressed against the rear inner wall of the housing 1120. Thus, during the rotation of the shaft core 1200, friction is generated between the disc-shaped portion 1210 and the stepped hole 1122, and between the washer 1900 and the rear inner wall of the housing 1120, thereby providing the user with a damping feel.
[0046] When wear occurs, under the pressure of the elastic self-recovering component 1800, the disc-shaped portion 1210 can always press against the step of the stepped hole 1122, and the washer 1900 can always press against the inner wall of the rear end of the housing 1120, thereby avoiding the deterioration of the damping feel and providing a good user experience.
[0047] To prevent the friction from decreasing and affecting the damping feel due to the increased radial clearance between the disc-shaped portion 1210 and the stepped hole 1122, such as... Figure 5 As shown, the peripheral surface of the disc-shaped portion 1210 has a first conical surface 1213 that contacts the front end surface of the disc-shaped portion 1210, such as... Figure 4As shown, the wall of the stepped hole 1122 has a second conical surface 1122a that contacts the first conical surface 1213. When wear occurs between the disc-shaped portion 1210 and the stepped hole 1122, the disc-shaped portion 1210 moves forward and presses against the stepped hole 1122 under the action of the elastic self-recovery member 1800. At the same time, the first conical surface 1213 and the second conical surface can still remain in close contact.
[0048] Furthermore, the simultaneous provision of damping through the dual friction surfaces of the "disc-stepped surface" and the "washer-inner wall of the housing" disperses the wear load of a single friction surface. This dual friction surface design reduces the wear rate per unit area and extends the service life of the damping structure. Simultaneously, the superimposed frictional force output from the dual friction surfaces results in a smoother and more linear damping force (avoiding resistance fluctuations caused by uneven wear of a single friction plate), providing a more delicate and smooth feel when the user operates the handle.
[0049] Among them, the elastic self-recovering component 1800 adopts a wave spring. The two ends of the wave spring are in surface contact with the limiting ring 1600 and the washer 1900. Compared with ordinary springs with point contact or line contact, it can avoid the torsion that causes the shaft core 1200 to move axially and affect the damping feel.
[0050] The Hall effect sensor 1999 is used to sense changes in the magnetic field of the magnetic component 1400, such as... Figure 2 As shown, it includes a housing 1999a and a Hall sensor chip 1999b disposed inside the housing 1999a. The housing 1999a is fixed to the rear end of the disc-shaped part 1210 of the shaft core by bolts and covers the magnetic component fixing structure 1500, so that the Hall sensor chip 1999b is located exactly between the two magnetic steel sheets 1410.
[0051] As can be seen from the above, the manual throttle controller provided in this application embodiment utilizes the cooperation between the protrusion on the limiting ring and the symmetrical inclined surfaces of the inner wall of the outer shell cavity. When the shaft core drives the magnetic component to rotate clockwise or counterclockwise, the protrusion is stopped by the inclined surface in the corresponding direction (for example, when rotating clockwise, the protrusion touches the right inclined surface; when rotating counterclockwise, it touches the left inclined surface), thereby strictly limiting the rotation range of the magnetic component to the angle range between the two inclined surfaces (e.g., 0° to 54°). This mechanical limiting structure can adjust the position and angle of the inclined surfaces according to actual needs, flexibly adapting to the limitation requirements of the "maximum target angle" in different scenarios, significantly improving the adaptability of the controller to specific application scenarios.
[0052] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A manual throttle controller, comprising a housing having a cavity, a shaft passing through the cavity in a front-rear direction of the housing, a hand-operated component connected to the front end of the shaft, a magnetic component fixed to the rear end of the shaft, and a Hall effect sensor unit for sensing changes in the magnetic field of the magnetic component, characterized in that, The cavity inner wall of the outer shell has two symmetrically arranged inclined surfaces. A concentric limiting ring is fixed on the shaft core and located in the cavity. The circumferential surface of the limiting ring forms a protrusion that is stopped by the inclined surface in the corresponding direction during clockwise or counterclockwise rotation with the shaft core. The protrusion is located between the two inclined surfaces.
2. A manual throttle controller according to claim 1, characterized in that, The rear end of the housing forms a stepped hole for the shaft to pass through the cavity. The rear end of the shaft forms a disc-shaped portion located within the stepped hole. The actuator further includes an elastic self-resetting member for pressing the disc-shaped portion against the step of the stepped hole and a washer that rotates with the shaft and can slide axially. The elastic self-resetting member is axially pre-pressed between the rear end inner wall of the housing and the limiting ring. The washer is located between the rear end of the elastic self-resetting member and the rear end inner wall of the housing.
3. A manual throttle controller according to claim 2, characterized in that, The shaft core has a first section for driving the limiting ring to rotate. The radial cross-section of the first section and the inner ring of the limiting ring are both non-circular. The limiting ring is sleeved on the first section. The shaft core is provided with a retaining ring for stopping the limiting ring on the front side.
4. A manual throttle controller according to claim 3, characterized in that, The shaft core has an annular groove located on the front side of the first section, and the retaining ring is embedded in the annular groove.
5. A manual throttle controller according to claim 3, characterized in that, The shaft has a second section for driving the washer to rotate. The second section is located behind the first section. The radial cross-sections of the second section and the inner ring of the washer are both non-circular. The washer is fitted onto the second section.
6. A manual throttle controller according to claim 2, characterized in that, The elastic self-recovering component is a wave spring, which is passed through the shaft core.
7. A manual throttle controller according to claim 1, characterized in that, The manual control component is a handle or a knob.
8. A manual throttle controller according to claim 1, characterized in that, The magnetic component consists of two magnetic steel sheets. The manipulator also includes a magnetic component fixing structure, which includes a disk and a magnetic field shielding ring. The disk is concentrically fixed to the rear end of the shaft core. The rear end face of the disk forms two axially extending convex portions. The two convex portions are axially symmetrically arranged along an axisymmetric line passing through the center of the disk. Each convex portion forms a first plane and a second plane perpendicularly connected to the first plane on its left and right sides relative to the other convex portion. The first plane faces the other convex portion. The second plane is located inside the first plane along the axisymmetric line. The magnetic field shielding ring is fitted around the two convex portions. Two opposing third planes are formed on its inner wall. The two third planes are symmetrically arranged and are parallel to the second plane. The first, second, and third planes on the same side enclose a slot, for a total of four slots. The axial length of each slot is at least equal to the width of the magnetic steel sheet, and the width in the left and right direction is equal to the thickness of the magnetic steel sheet. The two slots located on the same side of the two convex portions are opposite each other, and the distance between the two slots is equal to the length of the magnetic steel sheet.
9. A manual throttle controller according to claim 8, characterized in that, The rear end face of the shaft core has an axial pin hole and a positioning groove. The front end face of the disk body has a pin that mates with the pin hole and a positioning protrusion that mates with the positioning groove. The disk body is fixed to the rear end of the shaft core by bolts. The Hall sensing unit includes a cover and a Hall sensing chip disposed in the cover. The cover is fixed to the rear end of the shaft core and covers the magnetic component fixing structure so that the Hall sensing chip is located exactly between the two magnetic steel sheets.