A locking mechanism

Abstract

This solution discloses a lock mechanism in the field of security equipment, including a spring, a button, a lock tongue and a support, the support is provided with a U-shaped groove with two ends open, the two opposite side walls of the U-shaped groove are provided with a travel groove, a guide groove and a positioning groove that penetrate the U-shaped groove, one end of the spring and the button are both rotatably connected between the two positioning grooves, the travel groove is slidably connected with a fixed rod, the fixed rod penetrates the button and the lock tongue, the lock tongue is provided with a bolt, the bolt is slidably connected in the guide groove, and one end of the spring is against the other end of the button. The lock mechanism in this solution is more stable when working and will not deflect at will.

Description

Technical Field

[0001] The invention relates to the field of security equipment, and in particular to a locking mechanism. Background Art

[0002] A lock mechanism used in an aircraft includes a button 1, a lock tongue 2, a support 3, a spring 4 and a rivet 5. The support can be fixed on the mouth frame for use. The structural diagram of the lock mechanism is shown in FIG. Figure 1 , the button is compressed by force to rotate the spring, the button rotation drives the lock tongue to rotate, the lock tongue retracts, one end of the spring presses against the tail of the lock tongue, the lock tongue deflects, the lock tongue moves further away from the mouth frame, and the lock is unlocked. Release the button, the spring resets, the button drives the lock tongue to rotate, the lock tongue extends and resets, and the lock is locked. The main disadvantages of this lock mechanism are unstable lock tongue shaking, spring hitting the lock tongue, spring easy to deform and fail, and spring easy to break, which cause safety hazards. Summary of the invention

[0003] The present invention is intended to provide a lock mechanism to solve the problem that the existing lock mechanism is easy to deflect and unstable when in use.

[0004] A lock mechanism in the present scheme includes a spring, a button, a lock tongue and a support, the support is provided with a U-shaped groove with two ends open, the two opposite side walls of the U-shaped groove are provided with a travel groove, a guide groove and a positioning groove that penetrate the U-shaped groove, one end of the spring and the button are rotatably connected between the two positioning grooves, the travel groove is slidably connected with a fixed rod, the fixed rod passes through the button and the lock tongue, the lock tongue is provided with a pin, the pin is slidably connected in the guide groove, and one end of the spring is abutted against the other end of the button.

[0005] The working principle and beneficial effects of this solution: This solution eliminates the spring supporting the lock tongue, and adds a guide groove on the support. The lock tongue rotates with the bolt as a fulcrum. When in use, the button is subjected to force to compress the spring, causing the spring to rotate. Since the fixed rod runs through the button and the lock tongue, and the fixed rod slides in the travel groove, the rotation of the button will drive the rotation with the bolt as the fulcrum, and the other end of the spring no longer abuts against the tail of the lock tongue, so the spring will not damage the lock tongue. Due to the two positioning of the bolt and the fixed rod, the lock tongue will not shake and become unstable during operation.

[0006] Further, one end of the spring is a long end, and the other end of the spring is a short end. One end is set as the long end to facilitate contact with the button.

[0007] Furthermore, a stopper is provided on the button, and the long end of the spring abuts against the stopper. The stopper is provided to prevent the spring from abutting against the button and falling off.

[0008] Furthermore, the travel groove is an arc groove, which is convenient for the fixed rod to slide.

[0009] Further, the guide groove is a straight guide groove. One end of the lock tongue is positioned horizontally.

[0010] Furthermore, positioning plates are provided on both sides of the notch of the U-shaped groove, and fixing holes are provided on the positioning plates. Providing the positioning plates facilitates the installation of the lock mechanism and the mouth frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a lock mechanism of the present invention;

[0012] Figure 2 A locking state diagram of a locking mechanism of the present invention

[0013] Figure 3 This is a diagram of an unlocking state of a lock mechanism of the present invention;

[0014] Figure 4 It is a principle analysis diagram of the present invention;

[0015] Figure 5 The figure is a schematic diagram of the structure of a spring in a lock mechanism of the present invention. DETAILED DESCRIPTION

[0016] The following is a further detailed description through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: button 1, lock tongue 2, support 3, spring 4, fixed rod 5.

[0018] The embodiment is basically as shown in the attached Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown: a lock mechanism, including a spring 4, a button 1, a lock tongue 2 and a support 3, the support 3 is provided with a U-shaped groove with openings at both ends, positioning plates are provided on both sides of the groove of the U-shaped groove, and fixing holes are provided on the positioning plates. The two opposite side walls of the U-shaped groove are provided with a travel groove, a guide groove and a positioning groove that penetrate the U-shaped groove, the travel groove is an arc groove, and the guide groove is a straight guide groove. One end of the spring 4 and the button 1 is rotatably connected between the two positioning grooves, and a fixed rod 5 is slidably connected to the travel groove, and the fixed rod 5 passes through the button 1 and the lock tongue 2. The button 1 and the lock tongue 2 are hinged, and a latch is provided on the lock tongue 2, and the latch is slidably connected in the guide groove. A stopper is provided on the side of the top of the button 1, one end of the spring 4 is a long end, and the other end of the spring 4 is a short end, and the long end of the spring 4 abuts against the stopper.

[0019] Figure 4 Points A, O, and B correspond to Figure 1 Points A, O, and B in the figure, point O is the fulcrum of spring 4 on support 3; connecting rod AO represents button 1; connecting rod AB represents lock tongue 2.

[0020] During the unlocking process, when AO (button 1) is subjected to pressure, the spring 4 is compressed, and AO (button 1) rotates around point O. Point A is a common point on AO (button 1) and AB (lock tongue 2). When point A moves along the travel groove to point A1, it will drive point A on AB (lock tongue 2) to move together, and point A of lock tongue 2 will leave the highest point of the arc. AO (button 1) and AB (lock tongue 2) of lock tongue 2 use point A as the hinge point. Before the improvement, point B of lock tongue 2 has no support, and lock tongue 2 will be in a free rotation state along point A, and angle β is always in an uncertain state; after the improvement, a guide groove is added to the support 3, and a bolt is added to point B on lock tongue 2. The bolt extends into the guide groove, limiting the bolt to move only on the guide groove. When point A gradually moves to point A1, and point B also gradually moves to point B1, the angle β-α between lock tongue 2 and the mouth frame will increase as β gradually increases. The lock tongue 2 is retracted and deflected to complete the unlocking.

[0021] During the locking process, the pressure of AO (button 1) is released, and due to the elastic force of spring 4, point A1 gradually returns to point A, driving the lock tongue 2 to move in the opposite direction of the unlocking process. Before the improvement, the lock tongue 2 has no point B support, and the lock tongue 2 is supported by point A on button 1 and the contact point between the lock tongue 2 and the cover, forming an unstable state of two-point support; after the improvement, the guide groove support on the support 3 is added to the B point of the lock tongue 2, and the lock tongue 2 forms a stable state of three-point support.

[0022] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A locking mechanism, characterized in that: The invention comprises a spring, a button, a lock tongue and a support, wherein the support is provided with a U-shaped groove with two ends opened, and two opposite side walls of the U-shaped groove are provided with a travel groove, a guide groove and a positioning groove which are connected with the U-shaped groove, one end of the spring and the button are rotatably connected between the two positioning grooves, a fixed rod is slidably connected to the travel groove, the fixed rod passes through the button and the lock tongue, the button and the lock tongue are hinged, a latch is provided on the lock tongue, and the latch is slidably connected in the guide groove, one end of the spring abuts against the other end of the button, one end of the spring is a long end, and the spring The other end is a short end, and the side block on the top of the button, the long end of the spring is against the block, the travel groove is an arc groove, and the guide groove is a straight guide groove; during the unlocking process, when the button is subjected to pressure, the spring is compressed, and the button rotates around point O, and point O is the fulcrum of the spring on the support, driving the push rod to move along the arc-shaped groove, and at the same time the pin slides along the lock groove, so that the lock tongue retracts and deflects to complete the unlocking; during the locking process, the button pressure is released, and due to the elastic force of the spring, the lock tongue is driven to move in the opposite direction of the unlocking process to complete the locking.

2. A locking mechanism according to claim 1, characterized in that: Positioning plates are provided on both sides of the notch of the U-shaped groove, and fixing holes are provided on the positioning plates.

Images