Automatic rebound lock

Abstract

The utility model provides an automatic rebounding lock which comprises a lock shell, a first lock body rod, a second lock body rod and a secondary lock tongue, and the second lock body rod is connected to one side of the lock shell in a telescopic mode. The first lock body rod is movably inserted into the other side of the lock shell; the secondary lock tongue is rotatably fixed in the lock shell and is in limiting connection with the second lock body rod and the first lock body rod; in a natural state, under the acting force of the elastic device, the second lock body rod and the first lock body rod are in a contraction state, so that the rebound lock is in an unlocking state. By means of the connecting structure of the spring bolt and the lock body rod, the lock body rapidly completes locking operation under the external acting force, after locking, the lock body rod automatically shrinks under the action of elastic force through the elastic connecting structure of the lock body rod and the lock shell, automatic rebounding of the lock body is achieved, the lock rod body and the spring bolt are each of an internal hollowed-out structure, and therefore the locking effect is good. The weight is reduced to the greatest extent, the light weight of the rebound lock is realized, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of military door locks, in particular to an automatic rebound lock. Background Art

[0002] Modern military equipment is often heavy. During use, hatch doors must be manually opened and closed with a key, with no automatic unlocking depending on the operating conditions. Furthermore, hatch key locks are thick and heavy, adding to the weight of the equipment, failing to meet lightweight military requirements and inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to provide a door lock which can meet the requirements of lightweight and can automatically maintain an unlocked state.

[0004] To achieve the above-mentioned object, the present invention provides an automatic rebound lock, comprising a lock housing, a second lock body rod, a first lock body rod and a secondary lock tongue:

[0005] The second jack and the first jack are respectively provided on the left and right sides of the lock housing;

[0006] The second lock body rod passes through the second insertion hole and is retractably connected to one side of the lock housing through an elastic device;

[0007] The first lock body rod is movably connected to the other side of the lock housing through the first insertion hole;

[0008] The secondary lock tongue is rotatably fixed in the lock housing and is positionally connected to the second lock body rod and the first lock body rod;

[0009] In a natural state, under the action of the elastic device, the second lock body rod and the first lock body rod are in a contracted state, so that the automatic rebound lock is in an unlocked state.

[0010] Furthermore, the second lock body rod includes a second lock rod portion and a second base portion, the second lock rod portion and the second base portion are integrally connected, the second base portion is arranged inside the lock shell and is connected to the secondary lock tongue; a lock body rod boss is fixedly installed on the second base portion; the first lock body rod includes a first lock rod portion and a first base portion, the first lock rod portion and the first base portion are integrally connected, the first base portion is arranged inside the lock shell and is connected to the secondary lock tongue.

[0011] Furthermore, a lock shell boss is fixedly installed in the lock shell, and the elastic device is installed on the lock shell boss; the elastic device is a spring; in the locked state, one end of the spring is fixed to the lock shell boss, and the other end is elastically connected to the lock body rod boss, so that the second lock body rod is elastically and telescopically connected to the lock shell.

[0012] Furthermore, the second locking rod portion and the second base portion form an obtuse angle and are integrally connected.

[0013] Furthermore, a second limiting groove is provided on the second base portion, and a first limiting boss corresponding to the second limiting groove is provided on the secondary lock tongue, so that the secondary lock tongue is connected to the second lock body rod in a limiting manner through the first limiting boss in a natural state; a first limiting groove is provided on the first base portion, and a second limiting boss corresponding to the first limiting groove is provided on the secondary lock tongue, and is connected to the first lock body rod in a limiting manner through the second limiting boss;

[0014] When the secondary lock tongue is rotated, the secondary lock tongue pushes the second lock body rod and the first lock body rod to pop outwards respectively, thereby achieving a locked state.

[0015] Furthermore, the second base portion is arranged at the inner bottom end of the lock shell, and the first base portion is arranged at the inner top end of the lock shell.

[0016] Furthermore, it also includes a first-level lock tongue, which is arranged in the lock shell and has a bottom end exposed, and the first-level lock tongue is fixed on the first base portion of the first lock body rod.

[0017] Furthermore, a protrusion is provided on the back side of the exposed portion of the first-level lock tongue.

[0018] Furthermore, a primary gap groove is provided on the bottom frame of the lock housing to facilitate the rotation of the secondary lock tongue, and a secondary gap groove is also provided on the bottom end of the lock housing to facilitate the exposure of the primary lock tongue.

[0019] Furthermore, the secondary lock tongue has an arc-shaped structure.

[0020] Furthermore, the entire structure of the lock body rod, lock tongue and lock shell is made of stainless steel, so that it can meet the requirements of use while ensuring strength.

[0021] Furthermore, a first spring is provided between the primary lock tongue and the first lock body rod, and the top end of the first spring is fixed to the top end of the inner wall of the lock housing.

[0022] Furthermore, the first lock body rod, the second lock body rod, the first lock tongue and the second lock tongue all adopt an internal hollow structure to achieve lightweight.

[0023] When the second lock bolt is closed, the bottom end of the second lock bolt rotates to the outside of the bottom end of the lock shell, so that the bottom end of the second lock bolt pops out from the bottom end of the lock shell. During this process, the second lock bolt generates a pushing force, and the second lock bolt pushes the second lock body rod and the first lock body rod to move toward both sides of the lock shell respectively, so that the second lock rod part and the first lock rod part are respectively extended to both sides of the lock shell and pop out, realizing the locking operation. At this time, the first spring and the second spring in the lock shell are both in a stretched state; after closing, in a natural state without other external forces, the spring in the stretched state in the lock shell will undergo elastic deformation, generating an elastic force, causing the first lock body rod and the second lock body rod to rebound to their original positions, thereby driving the second lock bolt to return to its original position. At this time, the secondary lock bolt is limited and fixed in the lock shell without being exposed, and the second lock body rod and the first lock body rod are both in a telescopic state, realizing automatic unlocking.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The utility model cleverly utilizes the connection structure of the lock tongue and the lock body rod to realize the synchronous movement of the lock tongue and the lock body rod, so that the lock body can quickly complete the locking operation under the external force. After locking, the lock body rod is automatically contracted under the action of elastic force through the elastic connection structure between the lock body rod and the lock shell, realizing automatic rebound of the lock body, and making the lock body remain unlocked for a long time in the absence of external force. It is suitable for multiple through doors of various special vehicles, ships or cabins that require automatic rebound unlocking, improves the convenience of use, is easy to install, simple to use, and can meet the installation position requirements of different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the automatic rebound lock according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of the second lock body rod in an embodiment of the present utility model;

[0028] Figure 3 This is a structural diagram of the first lock body rod in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic structural diagram of the lock housing in an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of the locked state of the automatic rebound lock in the embodiment of the present utility model;

[0031] Figure 6 This is a schematic diagram of the unlocked state of the automatic rebound lock in an embodiment of the present utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described below.

[0033] This embodiment provides an automatic rebound lock, such as Figure 1 As shown, it includes a lock case 5, a first lock body rod 1, a second lock body rod 2 and a secondary lock tongue 4, wherein a first insertion hole 51 and a second insertion hole 52 are respectively provided on the left and right sides of the lock case 5; the second lock body rod 2 passes through the second insertion hole 52 and is telescopically connected to the right side of the lock case 5 through a second spring 6; the first lock body rod 1 passes through the first insertion hole 51 and is movably plugged into the left side of the lock case 5; the secondary lock tongue 4 can be rotatably fixed in the lock case 5 and is limitedly connected to the second lock body rod 2 and the first lock body rod 1;

[0034] In a natural state, under the elastic force of the second spring 6, the first lock body rod 1 and the second lock body rod 2 are in a contracted state, so that the automatic rebound lock is in an unlocked state.

[0035] In this embodiment, Figure 2 As shown, the second lock body rod 2 includes a second lock rod portion 21 and a second base portion 22, the second lock rod portion 21 and the second base portion 22 form an obtuse angle and are integrally connected, the second base portion 21 is arranged inside the lock housing 5 and is connected to the secondary lock tongue 4; a lock body rod boss 23 is fixedly mounted on the second base portion 22; the first lock body rod 1 includes a first lock rod portion 11 and a first base portion 12, as shown Figure 3 As shown, the first locking rod portion 11 and the first base portion 12 are integrally connected. The first base portion 12 is disposed inside the lock housing 5 and connected to the secondary lock tongue 3 .

[0036] In this embodiment, Figure 4 As shown, a lock shell boss 53 is fixedly installed in the lock shell 5; in the locked state, one end of the second spring 6 is fixed on the lock shell boss 53, and the other end is elastically connected to the lock body rod boss 23, so that the second lock body rod 2 and the lock shell 5 are elastically and telescopically connected.

[0037] In this embodiment, a second limiting groove 24 is provided on the second base portion 22, and a first limiting boss corresponding to the second limiting groove 24 is provided on the secondary lock tongue 4, so that the secondary lock tongue 4 is limitedly connected to the second lock body rod 2 through the first limiting boss in the natural state; a first limiting groove 13 is provided on the first base portion 12, and a second limiting boss corresponding to the first limiting groove 13 is provided on the secondary lock tongue 4, and is limitedly connected to the first lock body rod 1 through the second limiting boss;

[0038] When the secondary lock tongue 4 is rotated, the secondary lock tongue 4 pushes the second lock body rod 2 and the first lock body rod 1 to pop outwards, thereby achieving a locked state.

[0039] In this embodiment, the second base portion 22 is disposed at the inner bottom end of the lock housing 5 , and the first base portion 12 is disposed at the inner top end of the lock housing 5 .

[0040] In this embodiment, the automatic rebound lock further includes a primary lock tongue 3, which is disposed within the lock housing 5 with its bottom end exposed. The primary lock tongue 3 is fixed to the first base portion of the first lock body rod 1. A bump is provided on the back of the exposed portion of the primary lock tongue 3. A first spring is interposed between the primary lock tongue 3 and the first lock body rod 1, with its top end fixed to the top of the inner wall of the lock housing 5.

[0041] In this embodiment, a primary gap groove 54 is provided on the bottom frame of the lock housing 5 to facilitate the rotation of the secondary lock tongue 4, and a secondary gap groove 55 is further provided on the bottom end of the lock housing 5 to facilitate the exposure of the primary lock tongue 3.

[0042] In this embodiment, the entire structure of the first lock body rod 1, the second lock body rod 2, the primary lock tongue 3 and the secondary lock tongue 4 are all made of stainless steel, so that they can meet the use requirements while ensuring strength.

[0043] At the same time, in this embodiment, the first lock body rod 1, the second lock body rod 2, the first lock tongue 3 and the second lock tongue 4 all adopt an internal hollow structure to maximize the weight reduction of the automatic rebound lock and effectively achieve lightweighting.

[0044] In this embodiment, the working principle of the automatic rebound lock is:

[0045] When locking, Figure 6 As shown, the secondary lock tongue 4 is rotated so that the bottom end of the secondary lock tongue 4 rotates to the outside of the bottom end of the lock shell 5, so that the bottom end of the secondary lock tongue 4 pops out from the bottom end of the lock shell 5. In this process, the secondary lock tongue 4 generates a pushing force, and the secondary lock tongue 4 pushes the second lock body rod 2 and the first lock body rod 1 to move to the two sides of the lock shell 5 respectively, so that the second lock rod portion 21 and the first lock rod portion 11 respectively extend to the two sides of the lock shell 5 and pop out, realizing the locking operation. At this time, the first spring and the second spring 6 in the lock shell 5 are both in a stretched state; after closing, in a natural state without other external forces, the spring in the stretched state in the lock shell 5 will undergo elastic deformation, generating an elastic force to rebound the first lock body rod 1 and the second lock body rod 2 to their original positions. Figure 5 As shown, the secondary lock tongue 4 is driven back to its original position. At this time, the secondary lock tongue 4 is limited and fixed in the lock shell 5 without being exposed, and the second lock body rod 2 and the first lock body rod 1 are both in a telescopic state, realizing automatic unlocking.

[0046] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other variation to the technical solution and technical content disclosed herein shall be deemed to fall within the scope of the present invention and remain within the scope of protection of the present invention.

Claims

1. An automatic rebound lock, characterized in that: Includes lock housing, second lock body rod, first lock body rod and secondary lock tongue: The left and right sides of the lock housing are respectively provided with a first plug hole and a second plug hole; The second lock body rod passes through the second insertion hole and is telescopically connected to one side of the lock housing; The first lock body rod is movably connected to the other side of the lock housing through the first insertion hole; The secondary lock tongue is rotatably fixed in the lock housing and is respectively connected to the second lock body rod and the first lock body rod in a limiting manner; In a natural state, under the action of the elastic device, the second lock body rod and the first lock body rod are in a contracted state, so that the automatic rebound lock is in an unlocked state.

2. The automatic rebound lock according to claim 1, characterized in that: The second lock body rod includes a second lock rod portion and a second base portion, the second lock rod portion and the second base portion form an obtuse angle and are integrally connected, the second base portion is arranged inside the lock shell and is connected to the secondary lock tongue limiter; a lock body rod boss is fixedly mounted on the second base portion; the first lock body rod includes a first lock rod portion and a first base portion, the first lock rod portion and the first base portion are integrally connected, the first base portion is arranged inside the lock shell and is connected to the secondary lock tongue limiter.

3. The automatic rebound lock according to claim 2, characterized in that: A lock shell boss is fixedly installed in the lock shell, and the elastic device is installed on the lock shell boss; the elastic device is a spring; in the locked state, one end of the spring is fixed to the lock shell boss, and the other end is elastically connected to the lock body rod boss, so that the second lock body rod is elastically and telescopically connected to the lock shell.

4. The automatic rebound lock according to claim 2, characterized in that: The second base portion is provided with a second limiting groove, and the secondary lock tongue is provided with a first limiting boss corresponding to the second limiting groove, so that the secondary lock tongue is limitedly connected to the second lock body rod through the first limiting boss in a natural state; the first base portion is provided with a first limiting groove, and the secondary lock tongue is provided with a second limiting boss corresponding to the first limiting groove, and is limitedly connected to the first lock body rod through the second limiting boss; When the secondary lock tongue is rotated, the secondary lock tongue pushes the second lock body rod and the first lock body rod to pop outwards respectively, thereby achieving a locked state.

5. The automatic rebound lock according to claim 2, characterized in that: The second base portion is arranged at the inner bottom end of the lock housing, and the first base portion is arranged at the inner top end of the lock housing.

6. The automatic rebound lock according to claim 2, characterized in that: It also includes a first-level lock tongue, which is arranged in the lock shell and has a bottom end exposed. The first-level lock tongue is fixed on the first base portion of the first lock body rod.

7. The automatic rebound lock according to claim 6, characterized in that: A first spring is provided between the primary lock tongue and the first lock body rod, and a top end of the first spring is fixed to a top end of an inner wall of the lock housing.

8. The automatic rebound lock according to claim 6, characterized in that: The lock shell bottom frame is provided with a primary gap groove for facilitating the rotation of the secondary lock tongue, and the bottom end of the lock shell is also provided with a secondary gap groove for facilitating the exposure of the primary lock tongue.

9. The automatic rebound lock according to claim 1, characterized in that: The secondary lock tongue has an arc-shaped structure.

10. The automatic rebound lock according to claim 6, characterized in that: The first lock body rod, the second lock body rod, the first lock tongue and the second lock tongue all adopt an internal hollow structure to achieve lightweight.

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