Accelerator manipulator damping structure
By combining the dual friction surface design of the throttle controller with the elastic self-recovery component, the problem of deteriorated damping feel caused by wear in the friction plate damping structure is solved, resulting in a longer lifespan and a more refined operating feel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-07
AI Technical Summary
The existing friction plate damping structure of the throttle controller deteriorates in damping feel due to wear during long-term use, affecting the user experience.
The design employs a dual-friction surface, providing damping through the friction between the disc-shaped part of the shaft core and the stepped hole, as well as the friction between the washer and the inner wall of the housing. An elastic self-recovering component is used to keep the friction surfaces in close contact, preventing damping deterioration caused by wear.
It extends the service life of the damping structure, provides smoother, more linear damping force, and improves the delicacy and stability of the user's operating feel.
Smart Images
Figure CN224090040U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the throttle control device technical field, especially relates to a throttle control device damping structure. BACKGROUND
[0002] In the field of engineering vehicles (such as excavators, loaders), agricultural machinery (such as tractors, combines) and general power equipment (such as generator sets, lawn mowers), the throttle control device is the core operating component for controlling engine speed and power output, and the delicacy and stability of its operating feel directly affect the control accuracy and use experience of users. Among them, damping characteristic is the key to determine the feel, and damping design defects will cause rough operation, jamming or collapse, reducing user experience.
[0003] At present, the mainstream throttle control device on the market generally adopts a friction plate type damping structure, and the surfaces of the friction plate and the contact piece will gradually wear due to sliding friction in long-term operation, so that they are no longer in close contact, resulting in deterioration of damping feel and poor user experience. INVENTION CONTENTS
[0004] Therefore, in view of the above technical problems, the utility model provides a throttle control device damping structure.
[0005] The utility model adopts the technical scheme as follows:
[0006] A throttle control device damping structure, comprising a shaft core passing through the cavity of the outer shell of the control device in the front-rear direction, characterized in that the rear end of the outer shell forms a stepped hole for the shaft core to pass through the cavity, the rear end of the shaft core forms a disc-shaped part located in the stepped hole, the damping structure further comprises a limiting ring, an elastic self-recovery component for making the disc-shaped part tightly contact the step of the stepped hole, and a gasket that rotates with the shaft core and can axially slide, the limiting ring is concentrically fixed on the shaft core and located in the cavity, the elastic self-recovery component is axially pre-pressed between the rear end inner wall of the outer shell and the limiting ring, and the gasket is located between the rear end of the elastic self-recovery component and the rear end inner wall of the outer shell.
[0007] The shaft core of the utility model will be subjected to forward compression force from the elastic self-recovery component through the limiting ring, so that the disc-shaped part of the shaft core tightly contacts the step of the stepped hole. At the same time, the gasket is tightly contacted by the rear end inner wall of the shell, and in the rotating process of the shaft core, friction will occur between the disc-shaped part and the stepped hole and between the gasket and the rear end inner wall of the shell, thereby providing damping feel for the user. When wear occurs, the disc-shaped part can always tightly contact the step of the stepped hole under the compression of the elastic self-recovery component, and the gasket can always tightly contact the rear end inner wall of the shell, thereby avoiding the deterioration of damping feel and providing good user experience.
[0008] Moreover, the utility model discloses through "disc - step surface " and " washer - shell inner wall " double friction surface synchronous damping is provided, and the wear load of single friction surface is dispersed, and the wear rate of unit area is reduced to the design of double friction surface, prolongs the service life of damping structure. BRIEF DESCRIPTION OF DRAWINGS
[0009] The utility model will be explained in detail below in connection with the drawings and specific embodiment:
[0010] Figure 1 It is the three-dimensional structure schematic diagram of a kind of hand-operated throttle controller for the embodiment of the utility model to provide;
[0011] Figure 2 It is the explosion diagram of a kind of hand-operated throttle controller for the embodiment of the utility model to provide;
[0012] Figure 3 It is the radial section view of the rear shell for the embodiment of the utility model;
[0013] Figure 4 It is the three-dimensional structure schematic diagram of the rear shell for the embodiment of the utility model;
[0014] Figure 5 It is the three-dimensional structure schematic diagram of the shaft core for the embodiment of the utility model Figure 1 ;
[0015] Figure 6 It is the three-dimensional structure schematic diagram of the shaft core for the embodiment of the utility model Figure 2 ;
[0016] Figure 7 It is the axial section view for the embodiment of the utility model;
[0017] Figure 8 It is the schematic diagram of the magnetic piece fixing structure fixed in the rear end of the shaft core for the embodiment of the utility model;
[0018] Figure 9 It is the three-dimensional structure schematic diagram of the magnetic piece fixing structure for the embodiment of the utility model Figure 1 ;
[0019] Figure 10 It is the structure schematic diagram of the disc body of the magnetic piece fixing structure for the embodiment of the utility model;
[0020] Figure 11 It is the three-dimensional structure schematic diagram of the magnetic piece fixing structure for the embodiment of the utility model Figure 2 . SPECIFIC EMBODIMENT
[0021] The embodiments of the utility model will be described below in conjunction with the drawings of the specification. It should be noted that the embodiments involved in the specification are not exhaustive, and do not represent the only embodiment of the utility model. The following examples are only for the purpose of clearly explaining the utility model content of the utility model patent, and are not limited to the embodiments. For ordinary skilled persons in the art, different forms of changes and modifications can be made on the basis of the example description, and any changes or modifications within the scope of the technical concept and utility model content of the utility model are within the protection scope of the utility model.
[0022] As shown in Figure 1 , Figure 2 and Figure 8 , the embodiment of the application provides a kind of manual throttle controller, including shell 1100, shaft core 1200, hand control piece 1300, magnetic piece 1400, magnetic piece fixed structure 1500, limit ring 1600, baffle ring 1700, elastic self-recovery piece 1800, washer 1900 and Hall induction unit 1999.
[0023] Shell 1100 is constituted by front end cover 1110 and rear shell 1120, and front end cover 1110 and rear shell 1120 are fixed by bolt.
[0024] As shown in Figure 1 , front end cover 1110 has mounting hole 1111 and through hole, mounting hole 1111 is used to install controller to vehicle, and through hole is used to pass through shaft core 1200.
[0025] Rear shell 1120 is cylindrical, and after being fixed with front end cover 1110, cavity is formed in the inside.
[0026] As shown in Figure 3 , the upper portion of the circumferential inner wall of the above-mentioned cavity has two inclined surfaces 1121, and the lower portion of the circumferential inner wall of the cavity has two inclined surfaces 1121, which are arranged symmetrically along the vertical center line axis of the rear shell 1120.
[0027] As shown in Figure 4 , the rear end face of rear shell 1120 forms step hole 1122 for passing through shaft core 1200.
[0028] Shaft core 1200 passes through shell 1100 along front and rear direction through step hole 1122, cavity and through hole of front end cover 1110.
[0029] As shown in 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.
[0030] 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.
[0031] 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.
[0032] like Figure 8 As shown, the magnetic component 1400 is composed of two magnetic steel sheets 1410.
[0033] 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 .
[0034] 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.
[0035] The disc body 1510 and the disc-shaped part 1210 are concentrically fixed by bolts.
[0036] 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.
[0037] 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 .
[0038] The disk body 1510 is an injection-molded part, the magnetic field shielding ring 1520 is made of steel to prevent interference with the magnetic field signal, and the magnetic steel sheet 1410 is made of samarium cobalt magnetic material. Based on the above magnetic steel fixing structure, the two ends of the magnetic steel sheet can be precisely inserted into two opposite slots, which not only stabilizes and fixes the magnetic steel sheet, 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] 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.
[0049] 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.
[0050] 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 damping structure for a throttle control, comprising a shaft extending through a cavity in the front-rear direction of the control housing, 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 damping structure further includes a limiting ring, 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 limiting ring is concentrically fixed to the shaft and located within the cavity. 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.
2. The damping structure for a throttle controller according to claim 1, characterized in that, The peripheral surface of the disc-shaped portion has a first conical surface that contacts the front end surface of the disc-shaped portion, and the wall of the stepped hole has a second conical surface that contacts the first conical surface.
3. The throttle control damping structure 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. The throttle control damping structure 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. The throttle control damping structure 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. The damping structure of a 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. The throttle control damping structure according to claim 3, characterized in that, The radial cross-sections of the first segment and the inner ring of the limiting ring are both hexagonal.
8. The damping structure of a throttle controller according to claim 5, characterized in that, The radial cross-sections of the second segment and the inner ring of the washer are both waist-shaped.