Power switch unlocking driving mechanism with triaxial unlocking function

Abstract

The utility model discloses a power switch unlocking driving mechanism capable of unlocking in three axial directions, a driving shaft is connected to a rotating assembly of a rotating switch, the driving shaft, a driving rod and the rotating assembly can rotate synchronously, a locking pin is arranged in a groove in the side wall of the driving rod, a second button spring is arranged between the driving shaft and the driving rod, the locking pin is provided with a boss, and the boss is connected with the rotating assembly. A locking sleeve is arranged on the outer side of the driving rod, two limiting holes and a sliding groove are formed in the locking sleeve, the lower portion of the first button is connected to the locking pin, a first button spring is further arranged on the first button, and the first button spring can provide restoring force for the first button. The mechanism improves the reliability of the lifesaving system switch.

Description

Technical Field

[0001] This utility model belongs to the field of aviation life-saving technology, and in particular to a three-axis unlocking power switch unlocking drive mechanism. Background Technology

[0002] During routine use and maintenance, ejection seats require the operation of a power switch to turn on and off. In two-seat and multi-seat models, the power switch is also used to provide a signal to control the ejection mode of multiple seats. Because this switch needs to be used both in the cockpit and on the ground, the operating space is limited, and it needs to be reliably locked to prevent interference or snagging that could alter the switch's state. Therefore, the power switch must be reliably lockable to prevent interference from a single or two axes that could cause changes in the switch's state, and it must be operable with one hand. Utility Model Content

[0003] Utility Model Purpose

[0004] To meet the needs of power switches in confined spaces, this utility model provides a three-axis unlocking power switch unlocking drive mechanism.

[0005] Utility Model Technical Solution

[0006] A three-axis unlocking power switch unlocking drive mechanism includes a drive shaft and a drive rod arranged sequentially. The end of the drive shaft away from the drive rod is connected to a rotating assembly of a rotary switch. The drive shaft, drive rod, and rotating assembly can rotate synchronously. A locking pin is provided in a groove on the side wall of the drive rod. A button spring is provided between the drive shaft and the drive rod. The locking pin has a boss. A locking sleeve is provided on the outer side of the drive rod. The locking sleeve has two limiting holes and a sliding groove. The lower part of the button is connected to the locking pin. A button spring is also provided on the button. The spring of button one provides a restoring force. Pressing button one compresses the spring of button one and drives the locking pin to move radially towards the axis of the drive rod. The boss can disengage from the limiting hole, and then the drive rod moves towards the drive shaft. At this time, the spring of button two is compressed, and the boss enters the sliding groove. Rotate the drive rod to the corresponding position of the other limiting hole, release the drive rod, and the drive rod moves away from the drive shaft under the action of the spring of button two. The boss enters the other limiting hole. Release button one, and the boss is limited in the limiting hole.

[0007] Preferably, the spring of button one is disposed inside the button base and located between the button base and button one.

[0008] Preferably, the button base is disposed on the second button, and the end of the drive rod away from the drive shaft passes through the button base and is fixed on the second button.

[0009] Preferably, the two ends of the sliding groove correspond to the tangential positions of the two limiting holes on the opposite side.

[0010] Preferably, the locking sleeve has a sealing ring on the outside.

[0011] Preferably, the drive shaft and drive rod are fitted together by a rectangular shaft and a rectangular hole.

[0012] Preferably, the drive shaft and the rotating assembly are fitted together by a rectangular shaft and a rectangular hole.

[0013] Preferably, the contact system of the rotary switch is fixed on the base, the end of the rotary assembly away from the drive rod is connected to one end of the tension spring, and the other end of the tension spring is fixed on the base.

[0014] Preferably, a spring is provided in the inner hole of the drive shaft, with one end of the spring abutting against the end of the rotating component, the other end of the spring abutting against one end of the support seat, and the other end of the support seat abutting against the end of the drive rod.

[0015] Preferably, the drive shaft is located in the inner hole of the guide sleeve, and the guide sleeve is fixed on the base.

[0016] Preferably, the drive shaft is axially limited by the cooperation of the annular boss on the outer circumferential surface of the drive shaft and the annular boss on the inner hole of the guide sleeve away from the rotating component.

[0017] The advantages of this invention are: the mechanism improves the reliability of the switch used in the lifesaving system; the product has been tested and evaluated in both natural and mechanical environments and can be reliably locked; the three-level unlocking mechanism ensures the electrical safety of pilots and ground crew. Attached Figure Description

[0018] Figure 1 This is an exploded view of a three-axis unlocking power switch unlocking drive mechanism according to this utility model.

[0019] In the diagram, 1. outer casing, 2. large retaining ring, 3. spring one, 4. locking pin, 5. button one, 6. small retaining ring, 7. sealing ring, 8. spring two, 9. button two, 10. button seat, 11. drive rod, 12. sealing ring, 13. locking sleeve, 14. support base, 15. drive shaft, 16. guide sleeve, 17. contact system, 18. base, 19. support base, 20. rotating shaft, 21. tension spring. Detailed Implementation

[0020] This utility model is achieved through the following technical solution.

[0021] A three-axis unlocking power switch unlocking drive mechanism includes a first button 5, a button base 10, a first retaining ring 2, a second retaining ring 6, a drive rod 11, a locking sleeve 13, a locking pin 4, and a second button 9.

[0022] A drive shaft 15 and a drive rod 11 are arranged sequentially. The end of the drive shaft 15 away from the drive rod 11 is connected to the rotating assembly 20 of the rotary switch. The drive shaft 15, drive rod 11, and rotating assembly 20 can rotate synchronously. A locking pin 4 is provided in a groove on the side wall of the drive rod 11. A button spring 3 is provided between the drive shaft 15 and the drive rod 11. The locking pin 4 has a boss. A locking sleeve 13 is provided on the outside of the drive rod 11. The locking sleeve 13 has two limiting holes and a sliding groove. The lower part of the button 5 is connected to the locking pin 4. A button spring 8 is also provided on the button 5. Spring 8 provides a restoring force for button 5. Pressing button 5 compresses spring 8 and causes locking pin 4 to move radially towards the axis of drive rod 11, disengaging the boss from the limiting hole. Then, drive rod 11 moves towards drive shaft 15. At this time, spring 3 of button 2 is compressed, and the boss enters the sliding groove. Rotating drive rod 11 to the corresponding position of the other limiting hole and releasing drive rod 11 causes it to move away from drive shaft 15 under the force of spring 3 of button 2, allowing the boss to enter the other limiting hole. Releasing button 5 then limits the boss to this limiting hole. The two ends of the sliding groove correspond to the tangential positions of the two limiting holes on opposite sides. In this embodiment, the two limiting holes are circumferentially spaced 90° apart.

[0023] The spring 8 of button one is disposed inside the button base 10 and is located between the button base 10 and button one 5. The button base 10 is disposed on button two 9, and the end of the drive rod 11 away from the drive shaft 15 passes through the button base 10 and is fixed on button two 9.

[0024] The locking sleeve 13 has a sealing ring 12 on its outer side. The button 5 has a sealing ring 7 on its outer side.

[0025] The drive shaft 15, drive rod 11, and rotor assembly 20 all use rectangular shafts and rectangular holes to transmit torque.

[0026] The contact system 17 of the rotary switch is fixed on the base 18. The end of the rotating assembly 20 away from the drive rod 11 is connected to one end of the tension spring 21, and the other end of the tension spring 21 is fixed on the base 18.

[0027] A spring is provided in the inner hole of the drive shaft 15. One end of the spring abuts against the end of the rotating component 20, and the other end of the spring abuts against one end of the support seat 14. The other end of the support seat 14 abuts against the end of the drive rod 11.

[0028] The drive shaft 15 is set in the inner hole of the guide sleeve 16, and the guide sleeve 16 is fixed on the base 18.

[0029] In the initial state, the switch is in "discharge" mode, at which point button 29 cannot be rotated or pressed axially. When the switch needs to switch from "discharge" mode to "power-on" mode, the unlocking drive mechanism acts as a safety device, effectively preventing accidental activation of the switch. In its natural state, the unlocking drive mechanism is limited in both the axial and radial directions. After button 15 is pressed, the locking pin 4 disengages from the locking sleeve 13 (unlocking), and the button 29 assembly can move axially.

[0030] To accommodate a smaller installation space, the power switch housing adopts a split structure. The unlocking drive mechanism transmits externally applied pressure and torque. By pressing buttons 5 and 9, the drive mechanism is unlocked and rotated, switching between "power-on" and "discharge" modes. The handle size and shape design must consider ergonomics, operational comfort, and accessibility. In terms of electrical performance, to achieve mutual isolation between the 13 sets of switch contact circuits, each contact piece is isolated using polyimide insulating parts and potted with adhesive. The contact system 17 controls the on / off characteristics of the fixed switch positions through the rotation of the rotor assembly 20. This technology has been used in the structural design of various switches and is a mature technology in the industry, so it will not be elaborated upon here.

[0031] The operation steps are as follows:

[0032] 1. Press button 5 on button 29 to release the axial pressing lock of button 29;

[0033] 2. Press button 9. The drive rod 11 pushes the drive shaft 15 along the guide sleeve 16 into the switch housing 1. When pressed to the limit, the protrusion of the drive shaft 15 disengages from the groove of the guide sleeve 16, and the rotation lock is released.

[0034] 3. Rotating button 9 (clockwise) causes the drive shaft 15 to rotate the rotor assembly 20 under the action of torque. The switch changes from "discharge" mode to "power-on" mode, changing from 11 normally open contacts and 2 normally closed contacts to 11 normally closed contacts and 2 normally open contacts. Under the action of the tension spring 21 at the tail of the rotor assembly 20, button 9 automatically rotates 90° and then stops, locking the "power-on" state.

[0035] The locking function is achieved through a two-stage locking method consisting of locking sleeve 13, locking pin 4, button spring 8, drive shaft 15, and guide sleeve 16. Locking sleeve 13 is designed with locking holes that cooperate with locking pin 4 for both states. In each state of the product, the reaction force of button spring 8 presses locking pin 4 into the locking hole of locking sleeve 13 to achieve locking.

[0036] The specific unlocking process is as follows:

[0037] a) Press button 1 5: Pressing button 1 5 compresses button 1 spring 8, and the boss of locking pin 4 disengages from the locking hole of locking sleeve 13. Under this operation, although the first-level lock is released, button 2 9 cannot be rotated due to the existence of the second-level lock.

[0038] b) Press button two: Button two can only be pressed down when the button is pressed down. Otherwise, button two is locked and cannot be pressed down.

[0039] c) Rotary button 29: When button 15 and button 29 are pressed at the same time, both the first and second level locks are unlocked. At this time, button 29 can drive the rotor assembly 20 to rotate, thereby rotating the rotor assembly 20 to another state and driving the contact to switch.

[0040] d) Release button 2 9 and button 1 5 in the target state: After rotating to the position, release button 2 9. Button 2 9 will retract under the action of button 2 spring 3. Drive shaft 15 and guide sleeve 16 will be locked again. Release button 1 5. Locking pin 4 and locking sleeve 13 will be locked. The product will return to the secondary locking state.

[0041] After the switch contact system 17 is assembled, the unlocking mechanism is assembled. The tension spring 21 and the rotor assembly 20 are fixed by the support base 19, which serves as a limit for switching the switch to two positions. The switch housing 1 is fixed to the base 18 by screws. The guide sleeve 16 and the locking sleeve 13 are fixed to the unlocking mechanism and the switch housing 1 by screws and washers. After the locking pin 4 and the locking sleeve 13 are assembled, they are sequentially assembled on the button seat 10 along with the first button 5, the second snap ring 6, the sealing ring 7, and the first button spring 8. The drive shaft 15, the first snap ring 2, the sealing ring 12, the button seat 10, and the second button 9 are sequentially assembled, and the assembly is completed by the cooperation of screws, washers, and spring washers with the support base 14.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model. The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A three-axis unlocking power switch unlocking drive mechanism, characterized in that, The device includes a drive shaft (15) and a drive rod (11) arranged in sequence. The end of the drive shaft (15) away from the drive rod (11) is connected to the rotating assembly (20) of the rotary switch. The drive shaft (15), drive rod (11), and rotating assembly (20) can rotate synchronously. A locking pin (4) is provided in the groove on the side wall of the drive rod (11). A button spring (3) is provided between the drive shaft (15) and the drive rod (11). The locking pin (4) has a boss. A locking sleeve (13) is provided on the outside of the drive rod (11). The locking sleeve (13) has two limiting holes and a sliding groove. The lower part of the button (5) is connected to the locking pin (4). A button spring (8) is also provided on the button (5). The spring (8) of button one can provide a restoring force for button one (5). Pressing button one (5) can compress the spring (8) of button one and drive the locking pin (4) to move radially towards the axis of the drive rod (11) along the drive rod (11). The boss can disengage from the limiting hole. Then the drive rod (11) moves towards the drive shaft (15). At this time, the spring (3) of button two is compressed, and the boss enters the sliding groove. Rotate the drive rod (11) to the corresponding position of the other limiting hole. Release the drive rod (11). The drive rod (11) moves away from the drive shaft (15) under the action of the spring (3) of button two. The boss enters the other limiting hole. Release button one (5). The boss is limited in the limiting hole.

2. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, The spring (8) of button one is set inside the button seat (10) and located between the button seat (10) and button one (5).

3. The triaxial unlocking power switch unlocking drive mechanism as described in claim 1, characterized in that, The button base (10) is set on the second button (9), and the end of the drive rod (11) away from the drive shaft (15) passes through the button base (10) and is fixed on the second button (9).

4. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, The two ends of the sliding groove correspond to the tangential positions of the two limiting holes on the opposite side.

5. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, The locking sleeve (13) has a sealing ring on the outside.

6. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, The drive shaft (15) and drive rod (11) are connected by a rectangular shaft and a rectangular hole, and the drive shaft (15) and rotating assembly (20) are connected by a rectangular shaft and a rectangular hole.

7. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, The contact system (17) of the rotary switch is fixed on the base (18), and the end of the rotating assembly (20) away from the drive rod (11) is connected to one end of the tension spring (21), and the other end of the tension spring (21) is fixed on the base (18).

8. The power switch unlocking drive mechanism with triaxial unlocking as described in claim 1, characterized in that, A spring is provided in the inner hole of the drive shaft (15). One end of the spring abuts against the end of the rotating assembly (20), and the other end of the spring abuts against one end of the support seat (14). The other end of the support seat (14) abuts against the end of the drive rod (11).

9. A three-axis unlocking power switch unlocking drive mechanism as described in claim 1, characterized in that, The drive shaft (15) is set in the inner hole of the guide sleeve (16), and the guide sleeve (16) is fixed on the base (18).

10. A three-axis unlocking power switch unlocking drive mechanism as described in claim 8, characterized in that, The drive shaft (15) is axially limited by the engagement of the annular boss on the outer circumference of the drive shaft (15) and the annular boss on the inner hole of the guide sleeve (16) away from the rotating assembly (20).

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