A small electromagnetic unlocking mechanism and its use method

Abstract

The present invention discloses a small electromagnetic unlocking mechanism and its use method. The mechanism includes an electromagnet, an unlocking torsion spring, a stop ball, a lock hook, a limit rod, a sliding sleeve, a base, a micro switch, a steel ball, and a return spring. The electromagnet is provided with a pin, which is embedded in a groove at the top of the limit rod. The limit rod passes through the return spring and its bottom is inserted into the sliding sleeve on the base. A steel ball is provided between the limit rod and the micro switch. The use method includes the following steps for unlocking and locking. The point-type locking method solves the technical problems of high friction, high electromagnet actuation force, and insufficient reliability in the existing locking mechanism.

Description

Technical Field

[0001] The present invention relates to the field of aircraft onboard suspension systems, and in particular to a small electromagnetic unlocking mechanism and a use method thereof. Background Art

[0002] Currently, mechanical and hydraulic controls in aircraft control systems are being gradually replaced by fly-by-wire (FBW). Compared to traditional mechanical or hydraulic controls, FBW offers advantages such as light weight and fast response. FBW is an aviation control system that converts the pilot's control inputs into electrical signals through a converter, processes them in a computer or electronic controller, and transmits them to the actuators via cables. It eliminates the mechanical transmission devices and hydraulic lines found in traditional control systems.

[0003] The more electric devices used on an aircraft, the more advanced it is. However, the biggest problem with fly-by-wire control is the low reliability of the system. Usually, the actuating mechanism serving as the execution terminal is divided into two types: hydraulic and electric. The electric type can be divided into two types: motor and electromagnet. As the execution terminal of the electronic control system, the electromagnet has a very high reliability and has been widely verified in military and civilian fields. Summary of the Invention

[0004] The purpose of the present invention is to provide a small electromagnetic unlocking mechanism and a method of use, so as to solve the technical problems of large friction, high electromagnet actuation force and insufficient reliability of the locking mechanism in the prior art.

[0005] To achieve the above objectives, the present invention provides a small electromagnetic unlocking mechanism and a method of use, comprising:

[0006] A small electromagnetic unlocking mechanism includes an electromagnet, an unlocking torsion spring, a stop ball, a lock hook, a limit rod, a sliding sleeve, a base, a micro switch, a steel ball and a reset spring. A pin is provided on the electromagnet, and the pin is embedded in the groove at the top of the limit rod. The limit rod passes through the reset spring and the bottom is inserted into the sliding sleeve on the base. A steel ball is provided between the limit rod and the micro switch.

[0007] Specifically, the limiting rod is provided with a groove, and the groove can contact the steel ball as the limiting rod moves.

[0008] Specifically, a protrusion is provided on the limiting rod, and the protrusion abuts against the stop ball.

[0009] Specifically, a protrusion is provided on the inner side of the lock hook, and the protrusion abuts against the stop ball.

[0010] Specifically, a baffle is provided above the return spring, one end of the return spring abuts against the baffle, and the other end abuts against a protrusion provided on the limiting rod.

[0011] Specifically, one end of the unlocking torsion spring is fixed, and the other end is in contact with the end of the lock hook.

[0012] A method for using a small electromagnetic unlocking mechanism, including steps for unlocking and locking:

[0013] Unlocking condition: When the electromagnetic unlocking mechanism is unlocked, the signal of the micro switch is displayed as "locked". When the "unlock" signal is input to the controller, the axis pin of the electromagnet retracts and pulls the limit rod at the same time. When the limit rod moves to a certain position, the stop ball releases the limit on the lock hook. The lock hook is unlocked under the action of the unlocking torsion spring. The steel ball controls the micro switch signal under the action of the limit rod to display "unlocked";

[0014] Locking condition: When the electromagnetic unlocking mechanism is reset, the signal of the micro switch is displayed as "unlocked". When the "lock" signal is input at the controller, the axis pin of the electromagnet extends. At the same time, under the action of the reset spring, the limit rod moves downward. When the limit rod moves to a certain position, the stop ball locks the lock hook to a limit position. Under the action of the limit rod, the steel ball controls the micro switch signal to display "locked".

[0015] Based on the above technical solution, the embodiments of the present invention can produce at least the following technical effects:

[0016] (1) The present invention provides a small electromagnetic unlocking mechanism and a method of use, which uses a small electromagnet as the main actuating mechanism. The unlocking and locking of the mechanism are manually controlled by electrical signals, and the status of the device can be fed back in real time, making it easy to understand the specific operating conditions of the device.

[0017] (2) The present invention provides a small electromagnetic unlocking mechanism and a method of use, which locks the suspended object by point locking. The friction force is greatly reduced, which indirectly reduces the electromagnet's operating force and directly improves the reliability and quality of the product. It has the advantages of small size, light weight, and multiple functions, and has broad prospects in the field of drones. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic diagram of the locked state structure of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the unlocked state structure of an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the point locking structure at point A of the present invention.

[0021] In the figure: 1-electromagnet, 2-unlocking torsion spring, 3-stop ball, 4-lock hook, 5-limit rod, 6-slide sleeve, 7-base, 8-micro switch, 9-steel ball, 10-reset spring, 11-pin shaft. DETAILED DESCRIPTION

[0022] To better understand the purpose, structure, and function of the present invention, the following describes a small electromagnetic unlocking mechanism and its use method in further detail, with reference to the accompanying drawings and examples. The specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. The embodiments described herein are merely a portion of the present invention, not all of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] A small electromagnetic unlocking mechanism includes an electromagnet 1, an unlocking torsion spring 2, a stop ball 3, a lock hook 4, a limit rod 5, a sliding sleeve 6, a base 7, a micro switch 8, a steel ball 9 and a reset spring 10. A pin 11 is provided on the electromagnet 1, and the pin 11 is embedded in the top groove of the limit rod 5. The limit rod 5 passes through the reset spring 10, and the bottom is inserted into the sliding sleeve 6 on the base 7. A steel ball 9 is provided between the limit rod 5 and the micro switch 8. A groove and a protrusion are provided on the limit rod 5. The groove can contact the steel ball 9 as the limit rod 5 moves, and the protrusion abuts against the stop ball 3. A protrusion is provided on the inner side of the lock hook 4, and the protrusion abuts against the stop ball 3. A baffle is provided above the reset spring 10, one end of the reset spring 10 abuts against the baffle, and the other end abuts against the protrusion provided on the limit rod 5. One end of the unlocking torsion spring 2 is fixed, and the other end abuts against the end of the lock hook 4.

[0025] Among them, the electromagnet 1 is the actuating mechanism of the unlocking device, the unlocking torsion spring 2 is the unlocking power of the lock hook 4, the stop ball 3 and the limit rod 5 are used to unlock and reset the lock hook 4, the lock hook 4 is the main force-bearing part of the unlocking device, the micro switch 8 is the signal element of the unlocking device, and the reset spring 10 is the reset power of the limit rod 5.

[0026] When the electromagnetic unlocking mechanism is unlocked, the signal of the micro switch 8 is displayed as "locked". When the "unlock" signal is input at the controller, the axis pin 11 of the electromagnet 1 retracts and pulls the limit rod 5 at the same time. When the limit rod 5 moves to a certain position, the stop ball 3 releases the limit on the lock hook 4, and the lock hook 4 is unlocked under the action of the unlocking torsion spring 2. The steel ball 9 controls the signal of the micro switch 8 to display "unlocked" under the action of the limit rod 5.

[0027] When the electromagnetic unlocking mechanism is reset, the signal of the micro switch 8 is displayed as "unlocked". When the "lock" signal is input at the controller, the axis pin 11 of the electromagnet 1 extends. At the same time, under the action of the reset spring 10, the limit rod 5 moves downward. When the limit rod 5 moves to a certain position, the stop ball 3 locks the lock hook 4. Under the action of the limit rod 5, the steel ball 9 controls the signal of the micro switch 8 to display "locked".

[0028] The present invention discloses a small electromagnetic unlocking mechanism and its use method. This mechanism utilizes a small electromagnet as its primary actuating mechanism. Its unlocking and locking are manually controlled via electrical signals, and real-time feedback on the device's status is provided, making it easier to understand the specific operating conditions of the device. Compared to existing unlocking mechanisms, this unlocking mechanism utilizes a point-locking method, locking the suspended object through point contact. This point-locking method reduces friction compared to pre-contact and surface-contact locking mechanisms, indirectly reducing the electromagnet's actuating force and directly improving the product's reliability and weight. Furthermore, it offers advantages such as small size, light weight, and multiple functions, making it a promising option for the drone industry.

[0029] It will be appreciated that the present invention has been described with reference to certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A small electromagnetic unlocking mechanism, comprising an electromagnet (1), an unlocking torsion spring (2), a stop ball (3), a lock hook (4), a limit rod (5), a sliding sleeve (6), a base (7), a micro switch (8), a steel ball (9) and a return spring (10), characterized in that: The electromagnet (1) is provided with a pin shaft (11), the pin shaft (11) is embedded in the top groove of the limit rod (5), the limit rod (5) passes through the reset spring (10), and the bottom is inserted into the sliding sleeve (6) on the base (7), and a steel ball (9) is provided between the limit rod (5) and the micro switch (8); one end of the unlocking torsion spring (2) is fixed, and the other end is in contact with the end of the lock hook (4); The limiting rod (5) is provided with a groove, and the groove can contact the steel ball (9) as the limiting rod (5) moves; the limiting rod (5) is provided with a protrusion, and the protrusion abuts against the stop ball (3); the inner side of the lock hook (4) is provided with a protrusion, and the protrusion abuts against the stop ball (3).

2. A small electromagnetic unlocking mechanism according to claim 1, characterized in that: A baffle is provided above the return spring (10), one end of the return spring (10) abuts against the baffle, and the other end abuts against a protrusion provided on the limit rod (5).

3. A method for using a small electromagnetic unlocking mechanism, based on the small electromagnetic unlocking mechanism according to any one of claims 1-2, characterized in that: Including the steps for unlocking and locking: Unlocking condition: When the electromagnetic unlocking mechanism is unlocked, the signal of the micro switch (8) is displayed as "locked". When the "unlock" signal is input at the controller, the axis pin (11) of the electromagnet (1) retracts and pulls the limit rod (5) at the same time. When the limit rod (5) moves to a certain position, the stop ball (3) releases the limit on the lock hook (4). The lock hook (4) is unlocked under the action of the unlocking torsion spring (2). The steel ball (9) controls the signal of the micro switch (8) under the action of the limit rod (5) to display "unlocked".

4. The method for using a small electromagnetic unlocking mechanism according to claim 3, characterized in that: The lockout situation usage includes the following steps: Locking condition: When the electromagnetic unlocking mechanism is reset, the signal of the micro switch (8) is displayed as "unlocked". When the "locked" signal is input to the controller, the shaft pin (11) of the electromagnet (1) extends, and at the same time, under the action of the reset spring (10), the limit rod (5) moves downward. When the limit rod (5) moves to a certain position, the stop ball (3) locks the lock hook (4) to a limit position, and the steel ball (9) controls the signal of the micro switch (8) to display as "locked" under the action of the limit rod (5).

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