Neutral hand feeling prompting mechanism for operating rod

Abstract

A neutral hand feeling prompting mechanism for an operating rod comprises a limiting plate and an elastic clamp, a groove is formed in the middle section of the limiting plate, the two ends of the limiting plate, relative to the middle section of the limiting plate, both deviate towards the same side of the straight line where the middle section is located and towards the groove bottom direction of the groove, one end of the elastic clamp is a fixed end, and the other end of the elastic clamp is an elastic end. The elastic clamp and the limiting plate are located on the two sides of the operating rod respectively, the bottom end of the rod portion of the operating rod is erected on the middle support, the rod portion of the operating rod is abutted by the elastic end, and when the rod portion of the operating rod is shifted to the middle position, the limiting plate is extruded and clamped in the groove. The limiting plate and the elastic clamp are arranged on the two sides of the operating rod, the elastic clamp generates elastic force on the operating rod when the operating rod moves back and forth, then the operating rod extrudes the limiting plate, when the operating rod is located in the middle, the operating rod is clamped in the groove in the middle section of the limiting plate, and therefore the hand feeling feedback of a paragraph feeling can be generated; and a driver is prompted that the operating rod is operated to the middle position.

Description

Technical Field

[0001] This utility model relates to the field of joystick technology, and specifically to a joystick neutral tactile feedback mechanism. Background Technology

[0002] When using a joystick to control the vehicle's forward, backward, and stationary movements, pushing the joystick forward and pulling it back control the vehicle's movement, while the vehicle remains stationary when in the neutral position. Therefore, to accurately control the vehicle's movement, a clear distinction must be made between the joystick's states. Drivers often cannot judge whether the joystick has returned to center by feel and must rely on visual observation, which is inconvenient. To address this, this invention provides a simple joystick centering tactile feedback structure that generates a tactile signal indicating the joystick's return to center and transmits it to the driver. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this invention is to provide a neutral control lever feedback mechanism, solving the problem of providing a feedback indication when the driver moves the control lever back to center.

[0004] This utility model is achieved through the following technical solution:

[0005] A neutral tactile feedback mechanism for an operating lever includes a limiting plate and an elastic clamp. The middle section of the limiting plate has a groove. Both ends of the limiting plate are offset towards the same side of the straight line where the middle section is located and towards the bottom of the groove, relative to the middle section. One end of the elastic clamp is a fixed end, and the other end is an elastic end. The elastic clamp and the limiting plate are located on both sides of the operating lever. The bottom end of the operating lever is mounted on a central support. Both sides of the central support are vertically fixed with a first fixed plate and a second fixed plate by bolts. The top surfaces of the first fixed plate and the second fixed plate are perforated and fastened to a horizontal panel by bolts. The operating lever is held in place by the elastic end. When it is moved to the neutral position, it compresses the limiting plate and gets stuck in the groove. Both ends of the limiting plate are perforated and fixed with angle plates by bolts. The fixed end is perforated and fixed with rib plates by bolts. The angle plates and rib plates are welded to the horizontal panel through their respective top surfaces.

[0006] Preferably, the groove includes two groove segments bent towards the bottom of the groove, the straight lines of the two groove segments forming an obtuse angle, and the connection of the two groove segments forming a micro-arc. When the rod of the operating lever is moved to the middle position, it presses against the limiting plate and gets stuck at the connection of the two groove segments.

[0007] Preferably, the two grooves and their connection are integrally covered with a layer of rubber pad.

[0008] Preferably, the limiting plate and the elastic clamp are at the same horizontal position.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention utilizes limiting plates and elastic clamps on both sides of the operating lever. As the lever moves back and forth, the elastic clamps exert a spring force, causing the lever to press against the limiting plates. When the lever is in the center position, it engages with a groove in the middle of the limiting plate, providing a tactile feedback with a distinct click, indicating to the driver that the lever has been moved to the center position. This allows for more precise vehicle control and solves the problem of the lever not providing a centering indication when the driver moves it back and forth. This invention features a simple structure, high reliability, and fast feedback. When the lever returns to center, the driver receives a clear tactile indication without needing to observe it further, confirming the machine's forward movement. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional structural diagram of the neutral tactile feedback mechanism on the control lever of this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the limiting plate of this utility model;

[0014] Figure 3 This is a three-dimensional structural schematic diagram of the limiting plate of this utility model from another perspective;

[0015] Figure 4 This is a three-dimensional structural diagram of the elastic clip of this utility model;

[0016] Figure 5 This is a perspective view of the first fixing plate, the second fixing plate, the corner plate, and the stiffening plate of this utility model welded to a horizontal panel through their respective top surfaces.

[0017] Among them, the limiting plate 1, groove 101, slot 1011, elastic clamp 2, fixed end 201, elastic end 202, operating rod 3, intermediate support 4, first fixed plate 5, second fixed plate 6, horizontal panel 7, corner plate 8, and stiffening plate 9. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Figure 1-5 A neutral tactile feedback mechanism for an operating lever is shown, comprising a limiting plate 1 and an elastic clip 2. The middle section of the limiting plate 1 has a groove 101. Both ends of the limiting plate 1 are offset from the middle section towards the same side of the straight line containing the middle section and towards the bottom of the groove 101. One end of the elastic clip 2 is a fixed end 201, and the other end is an elastic end 202. The elastic clip 2 and the limiting plate 1 are located on opposite sides of the operating lever 3. The bottom end of the operating lever 3 is mounted on an intermediate support 4. Both sides of the intermediate support 4 are connected by bolts. A first fixing plate 5 and a second fixing plate 6 are vertically fixed. The top surfaces of the first fixing plate 5 and the second fixing plate 6 are both perforated and fastened to the horizontal panel 7 with bolts. The rod of the operating lever 3 is pressed against the elastic end 202. When it is moved to the middle position, it squeezes the limiting plate 1 and gets stuck in the groove 101. Both ends of the limiting plate 1 are perforated and fixed with bolts to the angle plate 8. The fixed end 201 is perforated and fixed with bolts to the rib plate 9. The angle plate 8 and the rib plate 9 are welded to the horizontal panel 7 through their respective top surfaces.

[0020] The groove 101 includes two groove segments 1011 that bend towards the bottom of the groove. The straight lines on which the two groove segments 1011 are located form an obtuse angle, and the connection between the two groove segments 1011 forms a micro-arc. When the rod of the operating lever 3 is moved to the middle position, it presses against the limiting plate 1 and gets stuck at the connection between the two groove segments 1011.

[0021] To increase the stress on the connection between the two slots 1011 and the operating lever 3, a rubber pad is integrally covered on the two slots 1011 and their connection. This also increases the wear resistance of the limiting plate and facilitates its long-term use.

[0022] It is worth mentioning that the above embodiment does not specify the relative horizontal positions of the limiting plate 1 and the elastic clamp 2. It only states that the lever 3 is held abutted by the elastic end 202, and when it is moved to the middle position, it will compress the limiting plate 1 and get stuck in the groove 101. The above effect can be achieved when the limiting plate 1 and the elastic clamp 2 are not in the same horizontal position. In order to ensure that the lever 3 is subjected to balanced force in the same horizontal position, it is preferable to set the limiting plate 1 and the elastic clamp 2 in the same horizontal position.

[0023] The working principle of this utility model:

[0024] like Figure 1 As shown, the operating lever 3 is limited by the first fixed plate 5, the second fixed plate 6, and the intermediate bracket 4, and can only be pushed forward and backward, not moved left or right. The operating lever 3 controls the vehicle's forward, backward, and stationary states. Pushing and pulling the operating lever 3 forward controls the vehicle's forward and backward movements, while the vehicle will be stationary when it is in the middle position. Therefore, to accurately control the vehicle's movement, the state of the operating lever must be clearly distinguished. When the operating lever 3 moves forward and backward, it compresses the elastic clamp 2, which provides the operating lever 3 with a spring force pointing towards the limiting plate 1. There is a groove 101 in the middle of the limiting plate 1. When the operating lever 3 is in the middle position, it will squeeze the limiting plate 1, which can just fit into the groove 101. When the operating lever 3 is in the middle position, there is a tactile feedback with a tactile feel, indicating to the driver that the operating lever has been manipulated to the middle position, thus allowing the operating lever to control the vehicle more accurately. When the operating lever 3 returns to the middle position, the driver does not need to make any extra observations and can directly obtain a clear tactile prompt to determine the switching between the machine's forward, backward, and stationary states.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A neutral tactile feedback mechanism for a control lever, characterized in that: The device includes a limiting plate (1) and an elastic clamp (2). The middle section of the limiting plate (1) has a groove (101). Both ends of the limiting plate (1) are offset from the middle section to the same side of the straight line where the middle section is located and towards the bottom of the groove (101). One end of the elastic clamp (2) is a fixed end (201), and the other end is an elastic end (202). The elastic clamp (2) and the limiting plate (1) are located on both sides of the operating rod (3). The bottom end of the operating rod (3) is mounted on the intermediate support (4). Both sides of the intermediate support (4) are vertically fixed with first fixing bolts. The first fixed plate (5) and the second fixed plate (6) have holes on their top surfaces and are fastened to the horizontal panel (7) with bolts. The rod of the operating rod (3) is held against the elastic end (202). When it is moved to the middle position, it squeezes the limiting plate (1) and is stuck in the groove (101). The limiting plate (1) has holes at both ends and is fastened to the corner plate (8) with bolts. The fixed end (201) has holes and is fastened to the reinforcing plate (9) with bolts. The corner plate (8) and the reinforcing plate (9) are welded to the horizontal panel (7) through their respective top surfaces.

2. The neutral touch feedback mechanism for the control lever according to claim 1, characterized in that: The groove (101) includes two groove segments (1011) that bend toward the bottom of the groove. The straight lines on which the two groove segments (1011) are located form an obtuse angle. The connection between the two groove segments (1011) forms a micro-arc. When the rod of the operating lever (3) is moved to the middle position, it presses against the limiting plate (1) and gets stuck at the connection between the two groove segments (1011).

3. The neutral touch feedback mechanism for the control lever according to claim 2, characterized in that: The two grooves (1011) and their connection are integrally covered with a layer of rubber pad.

4. The neutral touch feedback mechanism for the operating lever according to claim 1 or 3, characterized in that: The limiting plate (1) and the elastic clamp (2) are at the same horizontal position.

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