Handle rotating device with adjustable damping

Abstract

The utility model relates to a damping-adjustable handle rotating device which comprises a shaft seat, a fixing seat, a fixing plate and a steering sensor, the shaft seat is mounted on the fixing seat, the fixing plate is mounted at the bottom of the fixing seat, the damping-adjustable handle rotating device further comprises a damping adjusting assembly capable of adjusting a damping value, and the damping adjusting assembly is mounted between the fixing seat and the fixing plate. The damping adjusting assembly comprises a damping movable piece and a damping fixed piece, the damping movable piece and the damping fixed piece are arranged in a matched mode, the damping fixed piece is installed between the damping movable piece and the fixing plate, and the steering sensor is installed at the bottom of the fixing plate, partially located above the fixing plate and in contact with the damping movable piece. The handle rotating device is simple and ingenious in structure, by additionally arranging the damping assembly capable of adjusting the damping value, the overall stability of the handle rotating device is high, the operation efficiency is improved, meanwhile, the use experience of a user is enhanced, and application and popularization of the handle rotating device capable of adjusting the damping value in the market are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power steering devices, in particular to a handle rotation device with adjustable damping. Background Art

[0002] With the continuous improvement of industrial automation, people have put forward higher requirements for the comfort, safety and reliability of vehicle driving, especially for forklifts, forklift trucks and stackers used for carrying goods in factories. Since the goods to be carried by these vehicles are relatively heavy and the working hours are relatively long, when in use, if only relying on the mechanical operation steering structure to achieve steering, it is not only very laborious, increasing the labor intensity of workers and reducing work efficiency, but also when driving on relatively bumpy roads, the operating handle is very easy to shake, resulting in the vehicle being very difficult to control.

[0003] In order to solve the above technical problems, a Chinese utility model patent with the authorization announcement number CN101734280 and the authorization announcement date of June 8, 2011 discloses an electronic control steering device for a forklift. It adopts a structure composed of a steering handle, a steering shaft, a gearbox, a transmission structure and a sensor, which solves the problems existing in manual operation and reduces the labor intensity of workers. However, its structure also has defects: the steering handle transmits the signal to the sensor through the steering shaft, then through the gearbox and the transmission structure. There are many intermediate links and the process is complex. Due to the inevitable errors in each link, there are errors in the initial signal given, resulting in inaccurate operation. Moreover, its structure is very complex, the installation and debugging are troublesome, and the manufacturing cost is very high, thus affecting the user experience and being unfavorable to the popularization and application of the above electronic control steering device in the market.

[0004] Furthermore, in order to solve the problems existing in the above technology, a Chinese utility model patent with the authorization announcement number CN202499177U and the authorization announcement date of October 24, 2012 discloses an electronic power steering control device. Specifically, it includes a shaft seat and a fixed seat. The shaft seat includes a seat body. There is a connecting sleeve for connecting with the steering handle at the upper end of the seat body. Two connecting rods are arranged on the upper surface of the connecting sleeve. There is a connecting column at the lower end of the seat body. The fixed seat includes a flange. A connecting pipe is fixed on the flange. A steering sensor is installed at the lower end of the connecting pipe. The connecting column is inserted into the connecting pipe and is fixedly connected with the rotating shaft of the steering sensor. By adopting the above control device, the intermediate transmission process can be reduced, making the steering more accurate. At the same time, the structure is simple and the cost is low.

[0005] However, during actual operation of the above-mentioned electronic power steering control device, since its damping value cannot be adjusted, if the damping value is set too high, the steering control device may be too stable, lack the necessary flexibility, and be unable to respond to changes quickly; if the damping value is set too low, the steering control device may be too active, prone to excessive vibration or oscillation, thereby affecting the user experience and being detrimental to the promotion and application of the above-mentioned electronic power steering control device in the market. Utility Model Content

[0006] In order to overcome the defects in the above-mentioned prior art, the utility model aims to provide a handle rotating device with adjustable damping. The handle rotating device has a simple and ingenious structure. By adding a damping component that can adjust the damping value, the overall stability of the handle rotating device is high, which improves the operating efficiency and enhances the user experience, which is conducive to the promotion and application of the above-mentioned handle rotating device with adjustable damping in the market.

[0007] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions: a handle rotation device with adjustable damping, comprising an axle seat, a fixed seat, a fixed plate and a steering sensor, the axle seat is installed on the fixed seat, the fixed plate is installed on the bottom of the fixed seat, and also includes a damping adjustment component capable of adjusting the damping value, the damping adjustment component is installed between the fixed seat and the fixed plate, the damping adjustment component includes a damping movable member and a damping fixed member, the damping fixed member is adapted to be matched with the damping movable member, and the damping fixed member is installed between the damping movable member and the fixed plate, the steering sensor is installed at the bottom of the fixed plate and is partially located above the fixed plate and is in contact with the damping movable member.

[0008] As a preferred solution of the present invention, the top of the steering sensor has a sensor contact portion, the sensor contact portion is arranged through the fixed plate and a flexible connecting block is sheathed on the passed portion, and the flexible connecting block is arranged in contact with the damping movable member.

[0009] As a preferred solution of the present invention, a gasket and a spring are further installed between the damping stator and the fixing plate, and the gasket is arranged above the spring.

[0010] As a preferred solution of the present invention, the spring is a wave spring.

[0011] As a preferred solution of the present invention, the damping movable member is cylindrical and has a reserved position at the center for placing the flexible connecting block. The upper surface of the damping movable member is cut to form an annular groove for placing the shaft elastic ring.

[0012] As a preferred embodiment of the present utility model, the damping fixing member is cylindrically arranged and a positioning groove is formed on the outer wall surface, and a positioning sleeve is arranged in the positioning groove.

[0013] As a preferred embodiment of the present utility model, the shaft seat includes an upper shaft seat, a middle shaft seat and a lower shaft seat. The upper shaft seat is of a hollow structure and a shaft seat connection hole is formed on the wall surface. A connecting member capable of being pivotally connected to the handle seat is inserted through the shaft seat connection hole. The middle shaft seat is connected between the upper shaft seat and the lower shaft seat, and the lower shaft seat is used for connecting the fixed seat.

[0014] As a preferred embodiment of the present utility model, the fixed seat includes a seat body. An installation position for installing the shaft seat is formed at the central position of the seat body, and a seat body strengthening portion is integrally formed at the edge of the seat body.

[0015] As a preferred embodiment of the present utility model, a bearing is arranged at the contact position between the shaft seat and the fixed seat.

[0016] As a preferred embodiment of the present utility model, the shaft seat and the handle seat are connected by a pin shaft.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: An adjustable damping handle rotation device in the present utility model has a simple and ingenious structure. By arranging a damping adjustment component capable of adaptively adjusting the damping value between the fixed seat and the fixed plate, the probability of the damping value being too large or too small during the use of the handle rotation device can be reduced, thereby ensuring the stability of the handle rotation device during use, enhancing the user experience, and being conducive to the popularization and application of the above handle rotation device in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an adjustable damping handle rotation device in an embodiment of the present utility model;

[0019] Figure 2 is a schematic structural exploded view of an adjustable damping handle rotation device in an embodiment of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the shaft seat in an embodiment of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the fixed seat in an embodiment of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the fixed plate in an embodiment of the present utility model;

[0023] Figure 6 is a schematic structural diagram of the steering sensor in an embodiment of the present utility model;

[0024] Figure 7 It is a schematic structural diagram of a damping moving part in an embodiment of the present utility model;

[0025] Figure 8 It is a schematic structural diagram of a damping fixed part in an embodiment of the present utility model;

[0026] Figure 9 It is an installation schematic diagram of a handle rotation device with adjustable damping and a handle seat in an embodiment of the present utility model.

[0027] Reference numerals: 1, shaft seat; 1-1, upper part of the shaft seat; 1-2, middle part of the shaft seat; 1-3, lower part of the shaft seat; 1-4, shaft seat connection hole; 2, fixed seat; 2-1, seat body; 2-2, installation position; 2-3, seat body strengthening part; 3, fixing plate; 4, steering sensor; 4-1, sensor contact part; 5, damping moving part; 5-1, reserved position; 5-2, annular groove; 6, damping fixed part; 6-1, positioning groove; 7, gasket; 8, spring; 9, flexible connection block; 10, shaft elastic retaining ring; 11, positioning sleeve; 12, bearing; 13, handle seat. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and do not limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0030] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0031] Embodiment: As Figures 1 to 9As shown in the figure, an adjustable-damping handle rotation device mainly consists of a shaft seat 1, a fixed seat 2, a fixed plate 3, and a steering sensor 4. The shaft seat 1 is mainly provided to facilitate the connection with the handle seat 13, or the steering handle can be directly installed on the shaft seat 1 and is arranged in cooperation with the shaft seat 1. To ensure the stability of the shaft seat 1 during installation and use, the shaft seat 1 is installed on the fixed seat 2. Specifically, the shaft seat 1 includes an upper part 1-1 of the shaft seat, a middle part 1-2 of the shaft seat, and a lower part 1-3 of the shaft seat. The upper part 1-1 of the shaft seat is of a hollow structure and a shaft seat connection hole 1-4 is formed on the wall surface. A connecting piece capable of being pivotally connected with the handle seat 13 is inserted into the shaft seat connection hole 1-4. The middle part 1-2 of the shaft seat is connected between the upper part 1-1 of the shaft seat and the lower part 1-3 of the shaft seat. The lower part 1-3 of the shaft seat is used to connect the fixed seat 2. The fixed seat 2 includes a seat body 2-1. An installation position 2-2 for installing the shaft seat 1 is formed at the central position of the seat body 2-1, reducing the installation difficulty. Further, to enhance the structural strength of the fixed seat 2 itself, a seat body strengthening part 2-3 is integrally formed on the edge of the seat body 2-1. The seat body strengthening part 2-3 is provided protruding outward from the surface of the seat body 2-1, and there are multiple seat body strengthening parts 2-3. The multiple seat body strengthening parts 2-3 are equidistantly distributed along the circumferential direction of the seat body 2-1.

[0032] A bearing 12 is provided at the contact position between the shaft seat 1 and the fixed seat 2. The bearing 12 can significantly reduce the friction force between the contact surfaces of the shaft seat 1 and the fixed seat 2, reduce energy loss, improve mechanical efficiency, and the bearing 12 can bear axial, radial, or a combination load of both, thereby ensuring the stability of the handle and the reliability of the mechanical structure. The bearing 12 in this embodiment is a deep groove ball bearing. The deep groove ball bearing has a high load-bearing capacity. Its raceway is in the shape of a deep groove and can bear a relatively high radial load and a certain axial load.

[0033] To provide additional support for the fixed seat 2 and facilitate the subsequent installation of the steering sensor 4, in this embodiment, the fixed plate 3 is installed at the bottom of the fixed seat 2. To be able to change the magnitude of the damping force during rotational motion, a damping adjustment component capable of adjusting the damping value is also provided in the handle rotation device in this embodiment. To make the overall structure of the handle rotation device compact and avoid the influence of external devices on the damping adjustment component, in this embodiment, the bottom of the fixed seat 2 is provided in a hollow shape, and the damping adjustment component is installed in the hollow part. The damping adjustment component is installed between the fixed seat 2 and the fixed plate 3, that is, the damping adjustment component is wrapped inside.

[0034] Specifically, the above-mentioned damping adjustment component includes a damping moving part 5 and a damping fixed part 6. The above-mentioned damping fixed part 6 is adaptively arranged with the above-mentioned damping moving part 5. The above-mentioned damping moving part 5 is installed above the above-mentioned damping fixed part 6, and the above-mentioned damping fixed part 6 is installed between the above-mentioned damping moving part 5 and the above-mentioned fixed plate 3. The steering sensor 4 is installed at the bottom of the above-mentioned fixed plate 3 and partially located above the above-mentioned fixed plate 3 and is in contact with the above-mentioned damping moving part 5.

[0035] The top of the above-mentioned steering sensor 4 has a sensor contact part 4-1. The above-mentioned sensor contact part 4-1 passes through the above-mentioned fixed plate 3 and is sleeved with a flexible connection block 9 at the passed part. The above-mentioned flexible connection block 9 is in contact with the above-mentioned damping moving part 5. The setting of the above-mentioned flexible connection block 9 can protect the sensor contact part 4-1 from mechanical shock and vibration, extend the service life of the above-mentioned steering sensor 4, and the flexible connection block 9 can also absorb and isolate the vibration generated by the steering operation, reduce the interference to the steering sensor 4, and improve the stability and accuracy of the signal.

[0036] A gasket 7 and a spring 8 are also installed between the above-mentioned damping fixed part 6 and the above-mentioned fixed plate 3. The above-mentioned gasket 7 is located above the above-mentioned spring 8. The spring 8 can provide a certain damping effect, control the movement speed of the damping fixed part 6, and improve the dynamic response of the system. The gasket 7 can adjust the gap between the damping fixed part 6 and the fixed plate 3 to ensure the correct fit and movement between the components. In this embodiment, the positive pressure of the spring 8 can be adjusted by pressing the handle, so as to realize the change of the frictional force on the friction pair of the damping moving part 5 and the damping fixed part 6, thereby changing the magnitude of the damping force in the rotational motion and adapting to the damping force requirements in different occasions. The damping force value can be set according to the pressure applied by the handle downward, which is convenient and flexible; when rotating, if the user releases the handle, that is, does not apply pressure to the handle, the damping force value is constant during the process, so as to ensure the stability of the user during the operation. The above-mentioned spring 8 is a corrugated spring. The corrugated design provides additional elasticity, enabling the gasket 7 and the spring 8 to better adapt to and absorb pressure changes, and the corrugated spring will generate a damping effect during the movement, which helps to control vibration and noise. The setting of the above-mentioned gasket 7 can also prevent the above-mentioned damping fixed part 6 from being crushed for a long time, avoid the change of the force value, and the compression amount of the spring 8 can be changed by changing the thickness of the gasket 7, resulting in the change of the positive pressure, and then changing the frictional force value and the damping value.

[0037] The damping movable member 5 is cylindrical and has a reserved position 5-1 at the center for the flexible connecting block 9 to ensure that the flexible connecting block 9 interacts with the damping movable member 5 in the correct position to provide precise force transmission and control. The cylindrical design of the damping movable member 5 can optimize space utilization and make the entire system more compact. The presence of the reserved position 5-1 allows the flexible connecting block 9 to move within a certain range, which helps to absorb shock and vibration while maintaining the flexibility of the structure. The annular groove 5-2 formed by the cut provides a clear installation position for the shaft elastic retaining ring 10, simplifying the assembly process. The upper surface of the damping movable member 5 is cut to form an annular groove 5-2 for the shaft elastic retaining ring 10 to be placed, simplifying the assembly process. The shaft elastic retaining ring 10 is placed in the annular groove 5-2, which can fix the position of the damping movable member 5 relative to other components and guide its movement. The shaft elastic retaining ring 10 can also provide a certain preload force for the system, improve the contact conditions between components, and increase the overall rigidity.

[0038] The damping stator 6 is cylindrical and has a positioning groove 6-1 formed on its outer wall. A positioning sleeve 11 is provided in the positioning groove 6-1. The positioning groove 6-1 and the positioning sleeve 11 together provide precise circumferential positioning for the damping stator 6 to ensure that it is correctly aligned with the damping movable member 5. The positioning sleeve 11 can also fix the position of the damping stator 6 to prevent it from circumferential movement during operation.

[0039] The above-mentioned axle seat 1 and the handle seat 13 are connected by a pin shaft. Specifically, a connecting hole is opened on the side of the axle seat 1. The connection between the handle seat 13 is achieved by inserting a pin shaft and other connecting parts in the connecting hole, and then the steering handle is installed in the handle seat 13. The steering handle is connected to the steering sensor 4 through the axle seat 1. It has a simple structure and low cost, reduces the intermediate transmission process, and makes the steering more precise. In addition, the adjustment component capable of adjusting the damping value is arranged between the fixed seat 2 and the fixed plate 3, so that the handle has high stability and good adaptability during operation, thereby enhancing the user experience, which is conducive to the promotion and application of the above-mentioned handle steering device in the market.

[0040] The adjustable damping handle rotating device of this embodiment can utilize different combinations of wave springs. Within the allowable clearance between the damping stator 6 and the fixed plate 3, increasing the number of springs 8 increases the force, thereby further ensuring the stability of the handle rotating device during use. The following four sets of data show the torque values measured when the handle rotating device of this embodiment is used with different numbers of springs 8. The specific experimental data are as follows:

[0041] (1) The free height of the single-piece compression spring is 4.2 mm, the thickness is 0.6 mm, and the length of the lever arm is 300 mm;

[0042]

[0043] (2) The free height of the two-piece compression spring, i.e., the spring, is 4.8 mm, the thickness is 1.2 mm, the compression stroke is 3.6 mm, and the lever arm length is 300 mm;

[0044]

[0045] (3) The free height of the three-piece compression spring, i.e., the spring, is 5.4 mm, the thickness is 1.8 mm, the compression stroke is 3.6 mm, and the lever arm length is 300 mm;

[0046]

[0047] (4) The free height of the four-piece compression spring, i.e., the spring, is 6 mm, the thickness is 2.4 mm, the compression stroke is 3.6 mm, and the lever arm length is 300 mm;

[0048]

[0049] In the handle rotation device of this embodiment, according to its working conditions and the gap size between the damping fixing member 6 and the fixing plate 3, the above data (2) are usually adopted, that is, two-piece compression springs are used, which can provide better stability and operability, and at the same time can also improve the reliability and durability of the entire rotation device.

[0050] An adjustable damping handle rotation device in this embodiment, the structure of the handle rotation device is simple and ingenious. By arranging a damping adjustment component capable of adaptively adjusting the damping value between the fixed seat 2 and the fixing plate 3, the probability of the damping value being too large or too small during the use of the handle rotation device can be reduced, thereby ensuring the stability of the handle rotation device during use, enhancing the user experience, and being beneficial to the promotion and application of the above handle rotation device in the market.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to these embodiments shown herein, but rather will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0052] Although the following terms are used more frequently in this text: 1, shaft seat; 1-1, upper part of the shaft seat; 1-2, middle part of the shaft seat; 1-3, lower part of the shaft seat; 1-4, connection hole of the shaft seat; 2, fixed seat; 2-1, seat body; 2-2, installation position; 2-3, seat body strengthening part; 3, fixing plate; 4, steering sensor; 4-1, sensor contact part; 5, damping moving part; 5-1, reserved position; 5-2, annular groove; 6, damping fixed part; 6-1, positioning groove; 7, gasket; 8, spring; 9, flexible connection block; 10, shaft circlip; 11, positioning sleeve; 12, bearing; 13, handle seat, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. An adjustable damping handle rotation device, characterized in that, The invention comprises an axle seat (1), a fixing seat (2), a fixing plate (3) and a steering sensor (4), wherein the axle seat (1) is mounted on the fixing seat (2), the fixing plate (3) is mounted on the bottom of the fixing seat (2), and further comprises a damping adjustment component capable of adjusting the damping value, wherein the damping adjustment component is mounted between the fixing seat (2) and the fixing plate (3), the damping adjustment component comprises a damping movable member (5) and a damping fixed member (6), the damping fixed member (6) is adapted to be arranged with the damping movable member (5), and the damping fixed member (6) is mounted between the damping movable member (5) and the fixing plate (3), and the steering sensor (4) is mounted on the bottom of the fixing plate (3) and is partially located above the fixing plate (3) and is in contact with the damping movable member (5).

2. The adjustable damping handle rotation device according to claim 1, wherein, The steering sensor (4) has a sensor contact portion (4-1) at the top, the sensor contact portion (4-1) is arranged through the fixing plate (3) and a flexible connection block (9) is provided on the outer surface of the passed portion, and the flexible connection block (9) is arranged in contact with the damping movable member (5).

3. The adjustable damping handle rotation device according to claim 2, wherein A gasket (7) and a spring (8) are also installed between the damping fixed member (6) and the fixed plate (3), and the gasket (7) is arranged above the spring (8).

4. An adjustable damping handle rotation device according to claim 3, characterized in that, The spring (8) is a wave spring.

5. An adjustable damping handle rotation device according to claim 4, characterized in that, The damping movable member (5) is cylindrical and has a reserved position (5-1) at the center for placing the flexible connecting block (9). The upper surface of the damping movable member (5) is cut to form an annular groove (5-2) for placing the shaft elastic retaining ring (10).

6. The adjustable damping handle rotation device according to claim 5, characterized in that, The damping fixed member (6) is arranged in a cylindrical shape and has a positioning groove (6-1) formed on its outer wall surface. A positioning sleeve (11) is provided in the positioning groove (6-1).

7. An adjustable damping handle rotation device according to claim 1, characterized in that, The shaft seat (1) comprises a shaft seat upper portion (1-1), a shaft seat middle portion (1-2) and a shaft seat lower portion (1-3); the shaft seat upper portion (1-1) is a hollow structure and a shaft seat connecting hole (1-4) is formed on the wall surface; a connecting piece capable of being connected to the handle seat shaft is passed through the shaft seat connecting hole (1-4); the shaft seat middle portion (1-2) is connected between the shaft seat upper portion (1-1) and the shaft seat lower portion (1-3); and the shaft seat lower portion (1-3) is used to connect to the fixing seat (2).

8. An adjustable damping handle rotation device according to claim 1, characterized in that, The fixing seat (2) comprises a seat body (2-1), a mounting position (2-2) for mounting the shaft seat (1) is formed at the center of the seat body (2-1), and a seat body reinforcement portion (2-3) is integrally formed on the edge of the seat body (2-1).

9. The adjustable damping handle rotation device according to claim 1, characterized in that, A bearing (12) is provided at the contact point between the shaft seat (1) and the fixing seat (2).

10. An adjustable damping handle rotation device according to claim 1, characterized in that, The shaft seat (1) and the handle seat (13) are connected via a pin shaft.

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