Adjustable locking device
By designing an adjustable locking device, and utilizing components such as the handle rotation shaft and locking spring, the problem of reduced self-locking capability of existing lead screws under vibration conditions was solved, achieving stable locking of the pilot's foot pedals and a human-machine-friendly control effect.
Patent Information
- Application Number
- CN202423206408.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In existing pilot control devices, ball screws lack self-locking capability and require a large space, while triangular screws and T-screws have reduced self-locking capability under vibration, affecting the use of pitch locking function.
An adjustable locking device was designed, which uses components such as a handle rotation shaft, handle base, locking spring and pusher. The locking function is achieved through modular design, and locking can be achieved in any environment by using deep groove ball bearings and limit keys.
It achieves effective locking of the pilot's foot pedals in different environments, and features small size, light weight, few transmission links, good interchangeability and excellent human-machine interaction.
Smart Images
Figure CN223618907U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of pilot control system in aircraft flight control system, and particularly relates to an adjustable locking device. Background Technology
[0002] With the vigorous development of the domestic aviation industry, the types of pilot control devices are also increasing, and the adjustment function of the pedal assembly is an essential requirement. Currently, pedal adjustment methods include stepless and stepped adjustment, using ball screws, T-screws, and triangular screws as the main adjustment screws. T-screws and triangular screws have self-locking capabilities, while ball screws do not. In the design of specific pedal products, the arrangement of the adjustment screw is determined based on the available space and usage requirements. Using ball screws directly incorporates a limit shaft to achieve the adjustment locking function, but this requires a larger space. While adjustment methods using triangular screws and T-screws have self-locking capabilities, their self-locking ability is significantly reduced in complex environments (vibration environments), affecting the use of the onboard adjustment locking function. Utility Model Content
[0003] Utility Model Purpose
[0004] To address the shortcomings of existing foot pedal adjustable lead screws, this invention provides an adjustable locking device.
[0005] Utility Model Technical Solution
[0006] An adjustable locking device includes a handle rotating shaft with an annular groove on its outer circumferential surface. A locking spring is installed in the mounting hole of the handle base, and a pusher is installed below the locking spring. The lower part of the pusher can cooperate with the annular groove on the handle rotating shaft, and the locking spring can press the pusher into the annular groove.
[0007] Preferably, the handle base has two mounting holes, which are spaced 180° apart.
[0008] Preferably, the pusher is T-shaped, with the lower small end of the pusher being arc-shaped, and the mounting hole on the handle base has a boss that can limit the large end of the pusher. The handle base is connected to a spring cover plate that can seal the mounting hole.
[0009] Preferably, one end of the handle rotation shaft passes through the inner hole of the handle support.
[0010] Preferably, one end of the handle base extends into the inner hole of the handle support and has a limiting key. The limiting key can be inserted into the limiting groove of the inner hole of the handle support, and the limiting groove extends along the axial direction of the handle support.
[0011] Preferably, several limiting grooves can be formed in the circumferential direction of the inner hole of the handle support.
[0012] Preferably, the other end of the handle base is connected to a handle, and the other end of the handle rotation shaft extends into the inner hole of the handle.
[0013] Preferably, the end of the handle away from the handle base has an outer flange, and a handle knob is provided on the outer flange.
[0014] Preferably, the handle knob near the handle base passes through a hole on the outer flange and is threaded onto a nut.
[0015] Preferably, deep groove ball bearings are provided between the handle rotation shaft and the handle support, and between the handle support and the handle rotation shaft.
[0016] Advantages of this invention: This device is used to lock the pilot's pedal distance after adjustment. The adjustable locking device adopts a modular design. This product has the characteristics of small size, light weight, few transmission links, good interchangeability and good human-machine efficiency. Attached Figure Description
[0017] Figure 1 This is a structural schematic diagram of an adjustable locking device according to the present invention.
[0018] Figure 2 yes Figure 1 A schematic diagram of AA.
[0019] Figure 3 This is a schematic diagram of the handle's rotating shaft.
[0020] Figure 4 This is a schematic diagram of the handle support structure.
[0021] Figure 5 This is a structural diagram of the handle base.
[0022] Figure 6 This is a schematic diagram of the handle's structure.
[0023] Figure 7 This is a schematic diagram of the handle knob.
[0024] Figure 8 This is a schematic diagram of the locking device in its free state.
[0025] In the diagram, 1 is the handle, 2 is the handle knob, 3 is the handle base, 4 is the spring cover, 5 is the handle support, 6 is the handle rotation shaft, 7 is the tapered pin, 8, 9, and 14 are deep groove ball bearings, 10 is the nut, 11 is the flat key, 12 and 13 are the screws, and 15 is the locking spring. Detailed Implementation
[0026] This utility model is achieved through the following technical solution.
[0027] like Figure 1 , Figure 2An adjustable locking device includes a handle rotation shaft 6, a handle support 5, a handle base 3, a handle 1, a handle knob 2, a tapered pin 7, a locking spring 15, a spring cover plate 4, and a flat key 11.
[0028] An annular groove is provided on the handle rotation shaft 6. A locking spring 15 is installed in the mounting hole of the handle base 3. A pusher 7 is provided below the locking spring 15, and the lower part of the pusher 7 can cooperate with the annular groove on the handle rotation shaft 6. In this embodiment, the pusher 7 is T-shaped, and the small end of the lower part of the pusher 7 is arc-shaped. Two mounting holes are provided on the handle base 3 at 180° intervals. A spring cover plate 4 is fixed to the handle base 3 by screws 13, and the spring cover plate 4 can seal the mounting holes.
[0029] One end of the handle rotation shaft 6 passes through the inner hole of the handle support 5, and a deep groove ball bearing 14 is provided between the handle support 5 and the handle rotation shaft 6. One end of the handle base 3 extends into the inner hole of the handle support 5 and has a limiting key. The limiting key can be inserted into the limiting groove in the inner hole of the handle support 5. The limiting groove extends along the axial direction of the handle support 5. As needed, several limiting grooves can be opened in the circumferential direction of the inner hole of the handle support 5, so that the limiting key can cooperate with the limiting grooves at different angles. The interlocking of the limiting key and the limiting groove can realize the locking function of the pedal distance adjustment in any environment.
[0030] The other end of the handle base 3 is connected to the handle 1 by screw 12. The other end of the handle rotation shaft 6 extends into the inner hole of the handle 1. The end of the handle 1 away from the handle base 3 has an outer flange. The outer flange is provided with a handle knob 2. The end of the handle knob 2 near the handle base 3 passes through the hole on the outer flange and is threaded to a nut 10. A deep groove ball bearing 8 and a deep groove ball bearing 9 are provided between the handle knob 2 and the handle 1.
[0031] Flat keys 11 are connected to the outer circumference of both ends of the handle rotation shaft 6. The inner hole of the handle 1 has a boss that can axially limit the flat key 11.
[0032] The outer circumferential surface of the handle rotation shaft 6 near the inner hole of the handle support 5 has a boss, and the inner hole of the handle support 5 has a boss that can axially limit the boss of the handle rotation shaft 6.
[0033] The handle rotation shaft 6 is connected to the adjusting screw, and the handle support 3 is mounted on the pedal assembly.
[0034] During assembly, first press the deep groove ball bearing 14 into the bearing chamber of the handle support 5, then insert the handle rotating shaft 6 into the handle support 5, and insert the handle base 3 from the narrow end of the handle rotating shaft 6, pressing the flat key 11 into the groove of the handle rotating shaft 6; press the deep groove ball bearings 8 and 9 into the bearing chamber of the handle 1, connect the handle knob 2 to the handle 1, and then connect the handle 1 to the handle base 3. Figure 1 , Figure 2 As shown.
[0035] When the pilot needs to perform distance adjustment, pulling handle 1 disengages the conical pin 7 from the limit of the annular groove on the handle's rotating shaft 6, and handle 1 is in a free state, as... Figure 8 As shown. When the handle 1 is in a free state, it can be used for normal distance adjustment. When the distance adjustment is completed, push the handle 1 to make the limit key insert into the limit groove. The two engage with each other to realize the locking function of the pedal distance adjustment in any environment.
[0036] The scope of protection of this utility model is not limited to the above-described embodiments. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its scope. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, then the intent of this utility model also includes these modifications and variations.
Claims
1. An adjustable locking device, characterized in that, Includes a handle rotating shaft (6), the outer circumferential surface of the handle rotating shaft (6) is provided with an annular groove, a locking spring (15) is provided in the mounting hole of the handle base (3), a pusher (7) is provided below the locking spring (15), the lower part of the pusher (7) can cooperate with the annular groove on the handle rotating shaft (6), and the locking spring (15) can press the pusher (7) into the annular groove.
2. The adjustable locking device as described in claim 1, characterized in that, Two mounting holes are provided on the handle base (3), with the two mounting holes spaced 180° apart.
3. The adjustable locking device as described in claim 1, characterized in that, The pusher (7) is T-shaped, and the small end of the pusher (7) is arc-shaped. The mounting hole of the handle base (3) has a boss that can limit the large end of the pusher (7). The handle base (3) is connected to a spring cover plate (4) that can seal the mounting hole.
4. The adjustable locking device as described in claim 1, characterized in that, One end of the handle rotation shaft (6) passes through the inner hole of the handle support (5).
5. An adjustable locking device as described in claim 4, characterized in that, One end of the handle base (3) extends into the inner hole of the handle support (5) and has a limiting key. The limiting key can be inserted into the limiting groove in the inner hole of the handle support (5). The limiting groove extends axially along the handle support (5).
6. An adjustable locking device as described in claim 5, characterized in that, Several limiting grooves can be opened in the circumferential direction of the inner hole of the handle support (5).
7. An adjustable locking device as described in claim 5, characterized in that, The other end of the handle base (3) is connected to the handle (1), and the other end of the handle rotation shaft (6) extends into the inner hole of the handle (1).
8. An adjustable locking device as described in claim 7, characterized in that, The handle (1) has an outer flange at the end away from the handle base (3), and a handle knob (2) is provided on the outer flange.
9. An adjustable locking device as described in claim 7, characterized in that, The handle knob (2) is passed through the hole on the outer flange and threaded onto the nut (10) at one end near the handle base (3).
10. An adjustable locking device as described in claim 9, characterized in that, Deep groove ball bearings are provided between the handle rotation shaft (6) and the handle support (5), and between the handle support (5) and the handle rotation shaft (6).