Model airplane brake parachute mechanism

Abstract

The utility model relates to a model airplane brake parachute mechanism which comprises a brake parachute cabin body, a brake parachute pack, a parachute pack ejection device, a parachute pack cover plate, an unlocking assembly and a steering engine, the brake parachute cabin body is provided with a parachute pack groove for containing the brake parachute pack, the parachute pack ejection device is arranged at the groove bottom of the parachute pack groove, the brake parachute pack is placed on the parachute pack ejection device, and the steering engine is arranged on the brake parachute cabin body. The parachute pack ejection device provides thrust to abut the deceleration parachute pack against the parachute pack cover plate, the parachute pack cover plate capable of opening or closing the parachute pack groove is arranged at an opening of the parachute pack groove, the unlocking assembly is arranged on the deceleration parachute cabin and connected with the parachute pack cover plate in a matched mode, and the steering engine is arranged on the deceleration parachute cabin and connected with the parachute pack cover plate in a matched mode. The steering engine can control the rocker arm to push the unlocking assembly to leave the parachute pack cover plate, so that the parachute pack cover plate opens the parachute pack groove.

Description

Technical Field

[0001] The utility model relates to the field of aircraft model deceleration parachute design, in particular to an aircraft model deceleration parachute mechanism. Background Art

[0002] Model aircraft generally refer to aircraft that can fly. They typically need to roll a certain distance after landing. Jet-type model aircraft, in particular, operate at relatively high speeds during landing, resulting in a long roll distance and even the risk of running off the runway and causing damage. Therefore, the applicant added a parachute to the model aircraft to decelerate the aircraft after landing, shorten the roll distance, and allow the aircraft to stop quickly, thereby increasing its playability. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a model aircraft deceleration parachute mechanism.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: the present invention relates to a model aircraft deceleration parachute mechanism, including a deceleration parachute cabin, a deceleration parachute bag, a parachute bag ejection device, a parachute bag cover and a cover unlocking device. The deceleration parachute cabin is provided with a parachute bag slot for accommodating the deceleration parachute bag, and the bottom of the parachute bag slot is provided with a parachute bag ejection device. The deceleration parachute bag is placed on the parachute bag ejection device, and the parachute bag ejection device provides thrust to push the deceleration parachute bag toward the parachute bag cover. The opening of the parachute bag slot is provided with a parachute bag cover that can be opened or closed. The unlocking assembly is arranged in the deceleration parachute cabin, and the cover unlocking device realizes locking and unlocking of the parachute bag cover, wherein the cover unlocking device includes a servo, a rocker arm and an unlocking assembly. The servo controls the rocker arm to push the unlocking assembly backward to unlock the parachute bag cover, and the unlocking assembly resets to cooperate with the parachute bag cover to lock the parachute bag cover.

[0005] Preferably, a first groove and a second groove are provided on the deceleration parachute cabin, and the first groove and the second groove are respectively arranged on both sides of the parachute bag slot.

[0006] Preferably, the umbrella cover includes a fixed end and a free end, and the fixed end can be arranged in a flip-up manner between the umbrella slot and the first groove. When the umbrella cover closes the umbrella slot, the free end enters the second groove. The free end is provided with a fastener, and the fastener is provided with a fastener opening. The unlocking component enters or disengages from the fastener opening to achieve locking or unlocking of the umbrella cover.

[0007] Preferably, a tension spring is provided on the wall surface of the first groove, and the tension spring is connected to the umbrella cover.

[0008] Preferably, the unlocking assembly and the servo are fixedly arranged in the second groove, the servo drives the rocker arm to rotate clockwise, and the rocker arm pushes the unlocking assembly to move backward.

[0009] Preferably, the unlocking assembly includes a switch push block, a central axis, a switch piece, a torsion spring and a switch spring. The switch push block is provided with a braking part, a switch mounting groove and a spring mounting column from head to tail. The braking part realizes locking or unlocking of the umbrella cover. The switch piece and the torsion spring are installed in the switch mounting groove in conjunction with the central axis. The switch piece rotates unidirectionally around the central axis under the action of the torsion spring. The switch spring is sleeved on the spring mounting column to realize the resetting of the switch push block.

[0010] Preferably, a torsion spring installation groove for installing a torsion spring is provided on the top of the switch component, the torsion spring is installed in the torsion spring installation groove in conjunction with the central axis, and the torsion arm of the torsion spring is against the bottom of the torsion spring installation groove.

[0011] Preferably, the parachute pack ejection device includes a parachute pack push block, an ejection spring, a spring fixing block and a spring fixing seat. The spring fixing seat is installed at the bottom of the parachute pack slot. One end of the ejection spring is fixed on the spring fixing seat. The other end of the ejection spring cooperates with the spring fixing block to connect with the parachute pack push block. The deceleration parachute pack is placed on the parachute pack push block. The ejection spring provides spring force to push the parachute pack push block, and the parachute pack push block presses the deceleration parachute pack under the parachute pack cover.

[0012] Preferably, it also includes a pair of parachute doors, which can be installed on the parachute cabin in a flip-up manner.

[0013] Preferably, a magnet fixing seat is provided on the deceleration parachute cabin body, and a plurality of magnets for adsorbing the deceleration parachute cabin door are provided on the magnet fixing seat.

[0014] The beneficial effects of the present invention are as follows: the present invention relates to a model aircraft deceleration parachute mechanism, in which the unlocking assembly is pushed by the servo control rocker arm to release the connection with the parachute cover, so that the parachute cover opens the parachute slot, and the parachute ejection device provides thrust to push the deceleration parachute pack to the outside, so that the deceleration parachute pack pops out of the parachute slot, and the ejected deceleration parachute pack provides a deceleration effect for the model aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the deceleration parachute cabin of the utility model.

[0017] Figure 3 It is a structural diagram of the utility model after the deceleration parachute door is opened.

[0018] Figure 4 It is a schematic diagram of the internal structure of the utility model (without the umbrella cover).

[0019] Figure 5 It is an overall cross-sectional schematic diagram of the unlocking component of the utility model.

[0020] Figure 6 It is a structural diagram of a switch push block of the utility model.

[0021] Figure 7 It is a structural diagram of the switch component of the utility model.

[0022] Figure 8 This is a structural diagram of the utility model in which a torsion spring is installed on a switch member in coordination with a central axis.

[0023] Figure 9 It is a structural schematic diagram of an umbrella bag cover of the utility model.

[0024] Figure 10 It is an overall cross-sectional schematic diagram of the utility model in the initial state.

[0025] Figure 11 This is a structural diagram of the utility model after the rocker arm pushes the unlocking assembly to make the unlocking assembly leave the umbrella cover.

[0026] Figure 12 It is an overall schematic diagram of the deceleration parachute bag of the utility model when it is installed.

[0027] Figure 13 This is a schematic diagram of the cooperation between the parachute bag cover and the unlocking component when the deceleration parachute bag of the utility model is installed.

[0028] Figure 14 It is a structural schematic diagram of the rocker arm during the resetting process of the utility model.

[0029] Figure 15 It is a structural schematic diagram of the utility model after the rocker arm is reset.

[0030] Reference numerals

[0031] 1. Parachute housing; 11. Parachute bag slot; 12. First groove; 121. Tension spring; 13. Second groove; 131. Switch cover; 14. Magnet mount; 141. Magnet;

[0032] 2. Deceleration parachute pack;

[0033] 3. Parachute ejection device; 31. Parachute push block; 32. Ejection spring; 33. Spring fixing block; 34. Spring fixing seat;

[0034] 4. Umbrella cover; 41. Fixed end; 42. Free end; 421. Fastener; 422. Fastener opening; 423. First inclined surface;

[0035] 5. Unlocking assembly; 51. Switch push block; 511. Braking portion; 5111. Second inclined surface; 512. Switch mounting slot; 513. Spring mounting post; 52. Center axis; 53. Switch member; 531. Torsion spring mounting slot; 532. First push surface; 533. Second push surface; 54. Torsion spring; 541. Torsion arm; 55. Switch spring; 56. Switch bracket;

[0036] 6. Rocker arm; 7. Servo; 8. Parachute door. DETAILED DESCRIPTION

[0037] See also Figure 1-15 As shown, the utility model relates to a model aircraft deceleration parachute mechanism, which is applied to a model aircraft, and includes a deceleration parachute cabin 1, a deceleration parachute bag 2, a parachute bag ejection device 3, a parachute bag cover 4, an unlocking component 5, a rocker arm 6 and a servo 7. The deceleration parachute cabin 1 is provided with a parachute bag slot 11 for accommodating the deceleration parachute bag 2, and the bottom of the parachute bag slot 11 is provided with a parachute bag ejection device 3. The deceleration parachute bag 2 is placed on the parachute bag ejection device 3, and the parachute bag ejection device 3 provides thrust to push the deceleration parachute bag 2 against the parachute bag cover 4. The opening of the parachute bag slot 11 is provided with a parachute bag cover 4 that can be opened or closed. The unlocking component 5 is arranged on the deceleration parachute cabin 1, and the unlocking component 5 is cooperatively connected with the parachute bag cover 4. The servo 7 is arranged on the deceleration parachute cabin 1, and the servo 7 controls the rocker arm 6 to push the unlocking component 5 away from the parachute bag cover 4, so that the parachute bag cover 4 opens the parachute bag slot 11.

[0038] When the servo 7 controls the rocker arm 6 to push the unlocking assembly 5 away from the parachute cover 4, the parachute cover 4 opens the parachute slot 11. Since the parachute ejection device 3 is not subject to the resistance of the parachute cover 4, the parachute ejection device 3 provides thrust to push the deceleration parachute pack 2 out of the parachute slot 11, so that the deceleration parachute pack 2 pops out of the parachute slot 11. The ejected deceleration parachute pack 2 provides a deceleration effect for the model aircraft.

[0039] In this embodiment, the parachute housing 1 is provided with a first groove 12 and a second groove 13, which are respectively disposed on either side of the parachute slot 11. The parachute cover 4 includes a fixed end 41 and a free end 42. The fixed end 41 can be flipped over and disposed on a side of the parachute slot 11 near the first groove 12. When the parachute cover 4 closes the parachute slot 11, the free end 42 enters the second groove 13. The free end 42 is provided with a latch 421, which has a latch opening 422 that engages with the unlocking assembly 5.

[0040] Furthermore, a tension spring 121 is provided on the wall surface of the first groove 12, and the tension spring 121 is connected to the umbrella cover 4. When the unlocking component 5 releases the umbrella cover 4, the elastic potential energy of the tension spring 121 pulls the umbrella cover 4, so that the umbrella cover 4 opens the umbrella slot 11.

[0041] Furthermore, the unlocking assembly 5 and the servo 7 are disposed within the second groove 13. The servo 7 is equipped with a rocker arm 6 that pushes the unlocking assembly 5 into or out of the snap opening 422. The unlocking assembly 5 is secured within the second groove 13 via a switch bracket 56. A switch cover 131 protects the internal components of the second groove 13. The unlocking assembly 5 comprises a switch pusher 51, a central shaft 52, a switch element 53, a torsion spring 54, and a switch spring 55. The switch pusher 51 is provided with a brake 511, a switch mounting groove 512, and a spring mounting post 513, in this order. The brake 511 is configured to engage with the snap opening 422. The switch element 53 and torsion spring 54 are mounted within the switch mounting groove 512 in conjunction with the central shaft 52. One end of the switch spring 55 is sheathed on the spring mounting post 513, while the other end of the switch spring 55 rests against the wall of the second groove 13.

[0042] The top of the switch element 53 is provided with a torsion spring mounting slot 531 for mounting a torsion spring 54. The torsion spring 54 is mounted within the torsion spring mounting slot 531 in conjunction with the central shaft 52, with the torsion arm 541 of the torsion spring 54 resting against the bottom of the torsion spring mounting slot 531. The switch mounting slot 512 has a triangular cross-section, and the switch element 53 is swingably mounted within the switch mounting slot 512 in conjunction with the central shaft 52. The triangular cross-section of the switch mounting slot 512 provides greater swing space for the switch element 53. Under the torsion force of the torsion spring 54, the torsion arm 541 pushes against the bottom of the switch mounting slot 512, constantly pushing the switch element 53 toward one side of the switch mounting slot 512.

[0043] Furthermore, a first push surface 532 and a second push surface 533 are provided at the bottom of the switch member 53. In this embodiment, in the initial state, the umbrella cover 4 is covered with the umbrella slot 11, and the braking portion 511 extends into the buckle opening 422 for mating connection. The switch push block 51 will lock the umbrella cover 4 to prevent the umbrella cover 4 from opening. At this time, the rocker arm 6 is located on the side of the first push surface 532; when the rocker arm 6 is pushed toward the first push surface 532, the braking portion 511 extends out of the buckle opening 422, and the switch spring 55 is compressed and deformed and stores elastic potential energy; when the braking portion 511 is completely extended out of the buckle opening 422, the switch push block 51 will release the lock on the umbrella cover 4 , the tension spring 121 releases its elastic potential energy to open the umbrella cover 4. At the same time, the rocker arm 6 moves away from the switch member 53 due to its circular swing. Due to the thrust of the rocker arm contacting the switch member 53, the switch spring 55 releases its elastic potential energy and resets the switch push block 51. At this time, the rocker arm is close to the side of the second push surface 533. When it is necessary to reset the rocker arm to its initial position, the servo 7 controls the rocker arm to swing back, and the rocker arm pushes toward the second push surface 533. The switch member 53 swings upward due to the thrust. When the rocker arm is completely reset, under the torsion of the torsion spring 54, the torsion arm 541 pushes the bottom of the switch mounting slot 512, swinging the switch member 53 back to its original position, preparing for the next umbrella opening.

[0044] In this embodiment, the parachute bag ejection device 3 includes a parachute bag push block 31, an ejection spring 32, a spring fixing block 33, and a spring fixing seat 34. The spring fixing seat 34 is mounted on the bottom of the parachute bag slot 11. One end of the ejection spring 32 is fixed to the spring fixing seat 34, and the other end of the ejection spring 32 cooperates with the spring fixing block 33 to connect to the parachute bag push block 31. The deceleration parachute bag 2 is placed on the parachute bag push block 31. The spring force provided by the ejection spring 32 pushes the parachute bag push block 31. The parachute bag push block 31 presses the deceleration parachute bag 2 against the parachute bag cover 4. When the parachute bag cover 4 is opened, the ejection spring 32 releases its elastic potential energy to eject the deceleration parachute bag 2 out of the parachute bag slot 11. The ejected deceleration parachute bag 2 provides a deceleration effect for the model aircraft.

[0045] In this embodiment, the model aircraft parachute mechanism also includes a parachute door 8, which can be installed on the parachute cabin 1 in a flip-up manner. The parachute door 8 is arranged above the parachute cover 4. When the parachute cover 4 is opened, the parachute cover 4 is pushed toward the parachute door 8 to open the parachute door 8.

[0046] Furthermore, the parachute door 8 is magnetic, and a magnet fixing seat 14 is provided in the first groove 12. The magnet fixing seat 14 is provided with a plurality of magnets 141 for adsorbing the parachute door 8. When the parachute door 8 is closed, the magnets 141 adsorb the parachute door 8 to prevent the parachute door 8 from opening.

[0047] Furthermore, the latch 421 is provided with a first inclined surface 423, and the brake portion 511 is provided with a second inclined surface 5111. In the present invention, when the drag parachute pack 2 is to be installed on the drag parachute cabin 1, the drag parachute pack 2 is first pressed against the pack ejection device 3, and then the pack cover 4 is placed over the pack slot 11. At this point, the first inclined surface 423 abuts against the second inclined surface 5111. The second inclined surface 5111, under the thrust, moves the switch push block 51 outward. When the latch opening 422 aligns with the brake portion 511, the brake portion 511 enters the latch opening 422 for mating connection. At this point, the pack cover 4 is locked by the switch push block 51 and cannot be opened. Finally, the drag parachute cabin door 8 is closed, and the magnet 141 attracts the drag parachute cabin door 8, completing the installation process.

[0048] The present invention relates to a deceleration parachute mechanism for a model aircraft. In the present invention, a servo 7 controls a rocker arm 6 to push an unlocking assembly 5 to release the connection with the parachute cover 4, so that the parachute cover 4 opens the parachute slot 11. The parachute ejection device 3 provides thrust to push the deceleration parachute bag 2 outward, so that the deceleration parachute bag 2 pops out of the parachute slot 11. The ejected deceleration parachute bag 2 provides a deceleration effect for the model aircraft.

[0049] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A model aircraft parachute mechanism, characterized by: The invention comprises a deceleration parachute cabin, a deceleration parachute bag, a parachute bag ejection device, a parachute bag cover and a cover unlocking device, wherein the deceleration parachute cabin is provided with a parachute bag slot for accommodating the deceleration parachute bag, a parachute bag ejection device is provided at the bottom of the parachute bag slot, the deceleration parachute bag is placed on the parachute bag ejection device, the parachute bag ejection device provides thrust to push the deceleration parachute bag toward the parachute bag cover, and a parachute bag cover that can be opened or closed is provided at the opening of the parachute bag slot, wherein the cover unlocking device comprises a servo, a rocker arm and an unlocking assembly, the unlocking assembly is arranged in the deceleration parachute cabin, the cover unlocking device realizes locking and unlocking of the parachute bag cover, the servo The machine controls the rocker arm to push the unlocking assembly backward to unlock the parachute cover, and the unlocking assembly resets and cooperates with the parachute cover to lock the parachute cover. The unlocking assembly includes a switch push block, a central axis, a switch piece, a torsion spring and a switch spring. The switch push block is provided with a brake part, a switch mounting groove and a spring mounting column from head to tail. The brake part locks or unlocks the parachute cover. The switch piece and the torsion spring are installed in the switch mounting groove in cooperation with the central axis. The switch piece rotates unidirectionally around the central axis under the action of the torsion spring. The switch spring is sleeved on the spring mounting column to reset the switch push block.

2. The model aircraft parachute mechanism according to claim 1, characterized in that: The deceleration parachute cabin is provided with a first groove and a second groove, and the first groove and the second groove are respectively arranged on both sides of the parachute bag slot.

3. The model aircraft parachute mechanism according to claim 2, characterized in that: The umbrella cover includes a fixed end and a free end. The fixed end can be arranged in a flip-up manner between the umbrella slot and the first groove. When the umbrella cover closes the umbrella slot, the free end enters the second groove. The free end is provided with a fastener, and the fastener is provided with a fastener opening. The unlocking component enters or disengages from the fastener opening to lock or unlock the umbrella cover.

4. The model aircraft parachute mechanism according to claim 3, characterized in that: A tension spring is provided on the wall surface of the first groove, and the tension spring is connected to the umbrella cover plate.

5. The model aircraft parachute mechanism according to claim 3, characterized in that: The unlocking assembly and the servo are fixedly arranged in the second groove. The servo drives the rocker arm to rotate clockwise, and the rocker arm pushes the unlocking assembly to move backward.

6. The aircraft model parachute mechanism according to claim 1, characterized in that: A torsion spring installation groove for installing a torsion spring is provided on the top of the switch component. The torsion spring is installed in the torsion spring installation groove in cooperation with the central axis, and the torsion arm of the torsion spring is against the bottom of the torsion spring installation groove.

7. The model aircraft parachute mechanism according to claim 1, characterized in that: The parachute pack ejection device includes a parachute pack pushing block, an ejection spring, a spring fixing block and a spring fixing seat. The spring fixing seat is installed at the bottom of the parachute pack slot. One end of the ejection spring is fixed on the spring fixing seat. The other end of the ejection spring cooperates with the spring fixing block to connect with the parachute pack pushing block. The deceleration parachute pack is placed on the parachute pack pushing block. The ejection spring provides spring force to push the parachute pack pushing block, and the parachute pack pushing block presses the deceleration parachute pack under the parachute pack cover.

8. The model aircraft parachute mechanism according to claim 1, characterized in that: It also includes a pair of deceleration parachute doors, which can be installed on the deceleration parachute cabin in a flip-up manner.

9. The model aircraft parachute mechanism according to claim 8, characterized in that: A magnet fixing seat is provided on the deceleration parachute cabin body, and a plurality of magnets for adsorbing the deceleration parachute cabin door are provided on the magnet fixing seat.

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