Manual brake operating device

Abstract

The present invention discloses a manual brake operating device, which transmits the operating force to the brake device through a gear rack mechanism, and applies a smaller operating force and operating stroke through gear rack transmission to meet the larger brake load and stroke requirements. It has dynamic brake and parking brake functions. It can lock the parking brake, emergency brake, and brake release states respectively, and has anti-misoperation measures. It has the function of monitoring and alarming the brake and brake release signals.

Description

Technical Field

[0001] The invention relates to the field of brake devices, and in particular to a manual brake operating device for a brake system in an aircraft cockpit. Background Art

[0002] When the aircraft is performing parking brakes, emergency brakes or rotor brakes, the pilot pulls the brake handle to transfer force and displacement to the brake device to achieve braking.

[0003] Chinese patent CN207848258U discloses a brake operating device belonging to the field of petroleum and natural gas technology, which is a turbine brake operating device and an oil pumping unit, which consists of a turbine lift, a mounting bracket, an adjustment rod, a crank assembly, and a safety knife. By using a worm lift to drive the adjustment rod to move downward, the locking teeth on the safety knife are locked with the safety gear to prevent the locking teeth and the safety gear from lateral deviation, thereby ensuring the braking effect. The turbine brake operating device and the oil pumping unit are powered by the turbine lift and are not suitable for manual operation of the aircraft cockpit brake system.

[0004] Chinese patent CN208995041U discloses a brake operating device belonging to the technical field of oil well repair equipment. The brake operating device is composed of a bearing seat, a brake shaft, a crank arm 1, a pull rod, a pin, a brake handle sleeve, a brake handle, a connecting pin, and a crank arm 2. Its automatic locking mechanism includes a lock tongue, a square sleeve, a thrust spring, a guide sleeve, a cylinder push block, an air control valve, and a stopper. The brake operating device is only applicable to oil well repair machines and is not applicable to manual operation of aircraft cockpit brake systems.

[0005] A heading and brake control device is disclosed in Chinese patent CN110525641A. The brake control device is composed of a left pedal assembly, a right pedal assembly, a force adjustment mechanism assembly, a yaw rotation assembly, and a base assembly. The heading and brake control device is only applicable to unmanned aerial vehicles, and is not applicable to manual operation of the brake system in the cockpit of an aircraft.

[0006] The existing patented technologies cannot meet the manual brake control requirements of the aircraft cockpit brake system: small installation space, small swing space of the control handle, large driving force, and small control force. Summary of the invention

[0007] Purpose of the Invention

[0008] To solve the above problems, the present invention provides a manual brake operating device to meet the needs of transportation vehicles and aircraft during parking brakes, emergency brakes or rotor brakes, by applying a smaller operating force and operating stroke to meet the larger braking load and stroke requirements; in order to avoid accidental release of the brakes after parking brakes, emergency brakes or rotor brakes, or accidental brakes of transportation vehicles and aircraft during driving or flying, the manual brake operating device needs to take anti-misoperation measures.

[0009] Inventing technical solutions

[0010] A manual brake operating device transmits operating force to a brake device through a gear rack mechanism.

[0011] Preferably, the device includes a rack connected to a moving part of a force transmission mechanism, a gear meshing with the rack, the gear being fixed to one end of a rocker arm, and the other end of the rocker arm being connected to a handle, so that the gear can rotate in a centered manner when the handle is pulled.

[0012] Preferably, a groove is provided on the pull rod, the rocker arm passes through the groove on the pull rod, a spring mounting groove is provided on the rocker arm, the spring is installed in the spring mounting groove, the locking pin is installed in the spring mounting groove and is arranged below the spring, a waist-shaped hole is also provided on the rocker arm, the trigger is arranged in the waist-shaped hole and can move up and down along the waist-shaped hole, the waist-shaped hole is located above the spring mounting groove, and the trigger and the locking pin are respectively fixed after passing through the two holes on the pull rod.

[0013] Preferably, it also includes a shell, a cover plate connected to the shell, the gear and the lower part of the rocker arm are located in the accommodating space of the top opening surrounded by the shell and the cover plate 23, the gear is rotatably connected to the shell and the cover plate through a rotating shaft, and three R grooves are opened at corresponding positions on the top surfaces of the shell and the cover plate. When the locking pin is stuck in each R groove, the operating device respectively realizes the brake release locking, dynamic brake locking and parking brake locking of the brake operating device.

[0014] Preferably, it also includes an electrical connector fixed on the shell and the cover plate, the electrical connector is electrically connected to a micro switch located in the accommodating space surrounded by the shell and the cover plate, the micro switch is used to detect whether the manual brake operating device is in a braking state or a released brake state, and monitor and alarm the braking state signal.

[0015] Preferably, the coaxially arranged spiral tube and sleeve are connected to the housing through threads, and the rack can move in the inner holes of the spiral tube and the sleeve.

[0016] Preferably, an end cap is provided at the end of the sleeve.

[0017] Preferably, the gear and the rocker arm are connected by riveting or keys.

[0018] Preferably, the rotation radius of the rocker arm is greater than the rotation radius of the gear, and the gear is a sector gear.

[0019] Preferably, it also includes a dust cover fixed on the shell.

[0020] The advantages of the present invention are: through the transmission of the gear rack mechanism, a smaller operating force and operating stroke are applied to meet the larger braking load and stroke requirements. It has the functions of dynamic braking and parking braking. It can lock the parking braking, emergency braking and brake release states respectively, and has anti-misoperation measures. It has the functions of monitoring and alarming the braking and brake release signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a structural diagram of a manual brake operating device.

[0022] Figure 2 for Figure 1 AA section view.

[0023] Figure 3 for Figure 2 BB cross-sectional view.

[0024] Figure 4 This is a three-dimensional structural diagram of the handle part.

[0025] Figure 5 This is the circuit diagram of the micro switch.

[0026] Figure 6 A structural diagram of an electrical connector.

[0027] In the figure, 1- rack, 2- screw tube, 3- gear, 4- sleeve, 5- end cover, 6- electrical connector, 7- rivet, 8- micro switch, 9- dust cover, 10- rocker arm, 11- locking nut, 12- shaft, 13- housing, 14- locking pin, 15- spring, 16- pull rod, 17- trigger, 18- handle, 19- screw, 20- handle, 21- nut, 22- locking pin, 23- cover plate, 24- screw. DETAILED DESCRIPTION

[0028] The present invention is achieved through the following technical solutions.

[0029] A manual brake operating device, such as Figure 1 , Figure 2 , Figure 3 As shown, the manual brake operating device includes a rack 1, a solenoid 2, a gear 3, a sleeve 4, an end cover 5, an electrical connector 6, a rivet 7, a micro switch 8, a dust cover 9, a rocker arm 10, a locking nut 11, a rotating shaft 12, a housing 13, a locking pin 14, a spring 15, a pull rod 16, a trigger 17, a handle 18, a screw 19, a handle 20, a nut 21, a locking pin 22, a cover plate 23, and a screw 24.

[0030] The rack 1 is connected to the moving parts of the force transmission mechanism to transmit the operating force applied to the handles 18 and 20 to the brake device; the solenoid 2 is fixed to the housing 13 by a threaded connection to install and position the force transmission mechanism and to position and guide the rack 1; the gear 3 is rigidly connected to the rocker arm 10 by riveting with rivets 7 to transmit the operating force to the rack 1 through gear transmission; the sleeve 4 is fixed to the housing 13 by a threaded connection to position and guide the rack to avoid safety hazards caused by external movement of the rack 1; the electrical connector 6 is used to transmit the signal detected by the microswitch 8; the microswitch 8 is used to detect whether the manual brake operating device is in a braking state or a released braking state, monitor and alarm the braking state signal, and improve the safety of use. The dust cover 9 is used to prevent foreign matter from falling into the interior of the brake operating device; the screw 24 is used to fix the dust cover 9 on the housing 13; the rocker arm 10 is used to connect the handle 18, the handle 20 and the gear 3, and the rotation radius of the rocker arm 10 is greater than the rotation radius of the gear 3 to reduce the operating force; the locking nut 11 is used to tighten the shaft 12 to prevent the shaft 12 from axial movement; the shaft 12 is used to install and position the gear 3; the housing 13 and the cover plate 23 are used to install the rack 1, the solenoid 2, the sleeve 4, the electrical connector 6, the micro switch 8, the dust cover 9, the shaft 12, and support the load. Three R grooves are designed on the housing 13 and the cover plate 23 respectively to perform loose brake locking, dynamic brake locking and parking brake locking on the brake operating device; see Figure 4 As shown, the groove on the pull rod 16 corresponds to the thickness of the rocker arm 10 and is installed on the rocker arm 10. The lock pin 14 passes through the hole on the pull rod 16 and the spring installation groove on the rocker arm 10 to position the pull rod 16. The lock pin 22 is screwed on to axially position the lock pin 14. The pull rod 16 is rotated to expose the spring installation groove on the rocker arm 10. The spring 15 is installed in the spring installation groove, and the lock pin 14 is located below the spring 15. The pull rod 16 is rotated in the opposite direction to accommodate the rocker arm 10 into the groove on the pull rod 16. The spring 15 is locked. For positioning; the trigger 17 passes through the waist-shaped hole on the rocker arm 10 and the hole on the pull rod 16. The waist-shaped hole is located above the spring mounting groove and is axially positioned with a nut 21; the pull rod 16 and the lock pin 22 lock the brake operating device to release the brake, lock the dynamic brake and lock the parking brake; the pull rod 16 transfers the unlocking force applied by the driver to the trigger 17 and the nut 21 to the lock pin 14, the spring 15 and the lock pin 22 for unlocking; the handle 18 and the handle 20 are connected to form an operating handle by a screw 19.

[0031] When braking is required, hold the handle 18 and the handle 20, lift the trigger 17 and the nut 21 with your fingers, and the trigger 17 moves upward along the waist-shaped hole on the rocker arm 10. The force acting on the trigger 17 and the nut 21 is transmitted to the lock pin 14 and the lock pin 22 through the pull rod 16. The lock pin 22 moves upward along the spring installation groove on the rocker arm 10 to compress the spring 15; the lock pin 14 and the lock pin 22 move upward to disengage from the R groove on the housing 13 and the cover plate 23, and pull the handle 18 and the handle 20 to rotate counterclockwise. After the lock pin 14 and the lock pin 22 are out of the R groove on the housing 13 and the cover plate 23, release the trigger 17 and the nut 21, continue to pull the handle 18 and the handle 20, and the rocker arm 10 and the gear 3 rotate counterclockwise. The rack 1 moves to the right along with the counterclockwise rotation of the gear 3, and transmits the operating force to the brake device through the force transmission mechanism to achieve braking. When the lock pin 14 and the lock pin 22 reach the dynamic brake locking R groove on the housing 13 and the cover plate 23, the spring 15 pushes the lock pin 14 and the lock pin 22 into the R groove to achieve dynamic brake locking. When the parking brake is required, hold the handle 18 and the handle 20, lift the trigger 17 and the nut 21 with your fingers, the trigger 17 moves upward along the groove on the rocker arm 10, and the force acting on the trigger 17 and the nut 21 is transmitted to the lock pin 14 and the lock pin 22 through the pull rod 16. The lock pin 22 moves upward along the spring installation groove on the rocker arm 10 to compress the spring 15; the lock pin 14 and the lock pin 22 move up and disengage from the R groove on the housing 13 and the cover plate 23, and continue to pull the handle 18 and the handle 20 to rotate counterclockwise. When the lock pin 14 and the lock pin 22 reach the parking brake locking R groove on the housing 13 and the cover plate 23, the spring 15 pushes the lock pin 14 and the lock pin 22 into the R groove to achieve parking brake locking. When you need to release the brake, hold the handle 18 and handle 20, lift the trigger 17 and nut 21 with your fingers, push the rocker arm 10 and gear 3 to rotate counterclockwise, and the rack 1 moves to the left with the clockwise rotation of the gear 3, releasing the force acting on the brake device to release the brake. When the rocker arm 10 rotates to the brake release position, the spring 15 pushes the lock pin 14 and lock pin 22 into the R groove to achieve brake release and lock. Figure 1 It can be known that in order to drive the brake device to brake, the operating force to be applied is the product of the driving force of the brake device and the rotation radius of the gear 3 divided by the rotation radius of the rocker arm 10. Assuming that the driving force is required to be constant, the magnitude of the operating force is proportional to the rotation radius of the gear 3 and inversely proportional to the rotation radius of the rocker arm 10. The larger the rotation radius of the gear 3, the greater the required operating force; the larger the rotation radius of the rocker arm 10, the smaller the required operating force. In order to drive the brake device, the rack 1 needs to move a certain distance. The rotation arc of the rocker arm 10 is related to the stroke of the rack 1 and the rotation radius of the gear 3. It is the ratio of the stroke of the rack 1 to the rotation radius of the gear 3, which increases with the increase of the stroke of the rack 1 and decreases with the increase of the rotation radius of the gear 3. In order to reduce the operating force, according to actual needs, the rotation radius of the rocker arm 10 is designed to be larger than the rotation radius of the gear 3 on the premise of meeting the stroke requirements.

[0032] like Figure 51 is a circuit diagram of a specific embodiment of the micro switch 8, and the micro switch 8 is installed inside the rotor brake control device. In the figure, N and NC are normally closed terminals, and when the C terminal is connected to the N (NC) terminal, it is in the brake state; N0 and N01 are normally open terminals, and when the C terminal is connected to the N0 (N01) terminal, it is in the brake release state. The pin definition of a specific embodiment of the electrical connector 6 is shown in Figure 6 As shown. In the brake release state, the rocker arm 10 pushes the contact of the micro switch 8, and the C end is connected to the N0 (N02) end, sending a brake release signal to the helicopter control system to realize the brake monitoring and alarm functions. When braking is required, the rocker arm 10 leaves the brake release position, the contact of the micro switch 8 returns to normal, the C end of the micro switch 8 is closed with the N (NC) end, and a brake signal is sent to the helicopter control system to realize the brake monitoring and alarm functions. Both the micro switch 8 and the electrical connector 6 can be selected according to needs.

[0033] Table 1 Pin definition of electrical connector

[0034] Pins Wiring color Wiring Definition 1 red Micro switch C terminal 2 black Micro switch N terminal 3 blue Micro switch N0 terminal 4 white Micro switch NC terminal 5 yellow Micro switch N02 terminal 6 Reserve

[0035] The gear 3 and the rocker arm 10 of the present invention are not limited to being rigidly connected by riveting, and key transmission can also realize the linkage between the gear 1 and the rocker arm 10; the micro switch 8 is not limited to being triggered by the rocker arm 10, and can also be triggered by the gear 3 and the rack 1. Any changes made on the basis of the present invention belong to the scope of the present invention.

[0036] The manual brake operating device is driven by a gear rack mechanism to transmit the operating force to the rack, drive the rack to move linearly, and transmit the operating force to the brake device. Under the premise of meeting the installation space and handle swing space, increasing the length of the rocker arm can greatly reduce the operating force; the manual brake operating device is designed with a release brake lock, a dynamic brake lock, and a parking brake lock to avoid switching between release brakes, dynamic brakes, and parking brakes caused by misoperation and prevent accidents; the manual brake operating device is equipped with a micro switch to monitor and alarm the brake status signal, which improves the safety of use.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians familiar with the technical field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit and essence of the present invention should be included in the protection scope of the present invention. The technology, shape, and structure parts not described in detail in the present invention are all well-known technologies.

Claims

1. A manual brake operating device, characterized in that: The device transmits the operating force to the brake device through a rack and pinion mechanism; The device comprises a rack (1), the rack (1) being connected to a moving part of a force transmission mechanism, a gear (3) meshing with the rack (1), the gear (3) being fixed to one end of a rocker arm (10), the other end of the rocker arm (10) being connected to a handle, and the gear (3) being able to rotate in a centered manner when the handle is pulled; A groove is formed on the pull rod (16), the rocker arm (10) passes through the groove on the pull rod (16), a spring installation groove is formed on the rocker arm (10), a spring (15) is installed in the spring installation groove, a lock pin is installed in the spring installation groove and is arranged below the spring, a waist-shaped hole is also formed on the rocker arm (10), a trigger (17) is arranged in the waist-shaped hole and can move up and down along the waist-shaped hole, the waist-shaped hole is located above the spring installation groove, and the trigger (17) and the lock pin are respectively fixed after passing through two holes on the pull rod (16); It also includes a housing (13), a cover plate (23) connected to the housing (13), the gear (3) and the lower part of the rocker arm (10) being located in a receiving space with a top opening surrounded by the housing (13) and the cover plate (23), the gear (3) being rotatably connected to the housing (13) and the cover plate (23) via a rotating shaft (12), three R grooves being provided at corresponding positions on the top surfaces of the housing (13) and the cover plate (23), and when the locking pin is stuck in each R groove, the operating device respectively realizes the release brake locking, dynamic brake locking and parking brake locking of the brake operating device; The gear (3) and the rocker arm (10) are connected by riveting or keys.

2. A manual brake operating device as claimed in claim 1, characterized in that: It also includes an electrical connector (6) fixed on the housing (13) and the cover plate (23), the electrical connector (6) being electrically connected to a micro switch (8) located in a receiving space surrounded by the housing (13) and the cover plate (23), the micro switch (8) being used to detect whether the manual brake operating device is in a braking state or a brake-released state, and to monitor and warn the braking state signal.

3. A manual brake operating device as claimed in claim 1, characterized in that: The coaxially arranged spiral tube (2) and sleeve (4) are connected to the housing (13) via threads, and the rack (1) is able to move in the inner holes of the spiral tube (2) and the sleeve (4).

4. A manual brake operating device as claimed in claim 3, characterized in that: An end cover (5) is provided at the end of the sleeve (4).

5. A manual brake operating device according to any one of claims 1 to 4, characterized in that: The rotation radius of the rocker arm (10) is greater than the rotation radius of the gear (3), and the gear (3) is a sector gear.

6. A manual brake operating device according to any one of claims 1 to 4, characterized in that: It also includes a dust cover (9) fixed on the housing (13).

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