CN212927411U - Double-oblique-tongue lock - Google Patents

Abstract

The utility model provides a double-oblique-tongue lock belongs to tool to lock technical field. The anti-theft bolt solves the problems that the existing inclined bolt is poor in anti-theft performance and the like. The utility model discloses a lock body and big latch bolt, little latch bolt, big latch bolt and little latch bolt activity direction are unanimous, be equipped with one on the lock body and block the piece, be equipped with an outer portion of pushing away on the little latch bolt, block and lean on under the effect of an elastic component to lean on in the portion of pushing away outward, thereby little latch bolt can break away from to block the piece to the lock body in the outer portion of pushing away of in-process and make and block the piece and move under the effect of elastic component and finally keep off on the motion path of big latch bolt, still set firmly a linkage piece that keeps off on the motion path of big latch bolt all the time on the little latch bolt. The utility model has the advantages of little latch bolt can lock big latch bolt, can't reverse promotion big latch bolt after the locking, and big latch bolt and little latch bolt can be opened simultaneously to key or handle homogeneous energy of unblanking.

Description

Double-oblique-tongue lock

Technical Field

The utility model belongs to the technical field of the tool to lock, concretely relates to double-inclined tongue lock.

Background

The oblique bolt of the existing anti-theft lock only extends out of the lock body under the elastic action of a spring, and the spring is reversely compressed by pushing the oblique bolt to unlock the lock, so that by utilizing the structural defect, some lawless persons can often insert the insert into the gap between the door and the door frame, and reversely push the oblique bolt by utilizing the insert, the door can be easily opened, and the anti-theft performance is poor; in order to overcome the structural defect, a lock with high anti-theft performance capable of preventing the reverse thrust of the latch bolt needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned defect that current lock body exists, and the lock that has two oblique tongues that provide, wherein little oblique tongue can lock big oblique tongue, can't reverse promotion big oblique tongue after the locking, and big oblique tongue and little oblique tongue are opened simultaneously to key or handle homoenergetic that unblanks.

The purpose of the utility model can be realized by the following technical proposal:

a double-oblique-tongue lock comprises a lock body, a large oblique tongue and a small oblique tongue, wherein the large oblique tongue and the small oblique tongue are arranged on the lock body, one end of the large oblique tongue extends out of the lock body through a large oblique tongue hole, the small oblique tongue extends out of the small oblique tongue through a small oblique tongue hole, the large oblique tongue and the small oblique tongue are movably arranged on the lock body, the moving directions of the large oblique tongue and the small oblique tongue are consistent, the large oblique tongue and the small oblique tongue can move and retract into the lock body, a blocking piece is further arranged on the lock body, an outward pushing portion is arranged on the small oblique tongue, the blocking piece abuts against the outward pushing portion under the action of an elastic piece, the outward pushing portion of the small oblique tongue can be separated from the blocking piece in the inward retracting process of the lock body, the blocking piece can move under the action of the elastic piece and is finally blocked on the moving path of the large oblique tongue, and a linkage piece is fixedly arranged on the small oblique tongue and.

In foretell double-oblique-tongue lock, big oblique tongue sets up on above-mentioned lock body through an oblique tongue pole, and big oblique tongue links firmly with oblique tongue pole, and the direction of motion of big oblique tongue is unanimous with the axial of oblique tongue pole, still is equipped with the first elasticity piece that resets that makes big oblique tongue have the motion trend of stretching out outside big oblique tongue hole all the time on the lock body, still be equipped with the second elasticity piece that makes little oblique tongue have the motion trend of stretching out outside the lock body all the time on the lock body.

In the double-oblique-tongue lock, the lock body is provided with a rotating piece, the rotating piece is provided with a square hole for square steel to penetrate through, the lock body is further provided with a main spring bolt, the rotating piece is connected with the main spring bolt and the large oblique tongue in a transmission manner, and the rotating piece can drive the main spring bolt and the large oblique tongue to retract into the lock body in the rotating process.

In the above-mentioned double-oblique-tongue lock, the lock body is further movably provided with a moving part, the moving part is always attached to the rotating part under the action of a third elastic resetting part, the rotating part can drive the moving part to move against the action of the third elastic resetting part in the process of rotating in the direction of retracting the large oblique tongue into the lock body, and the moving part can act on the blocking part in the motion process to enable the moving part to exit from the motion path range of the large oblique tongue.

In foretell two oblique tongue locks, be equipped with a spacing seat on the lock body, above-mentioned oblique tongue pole is worn to establish on spacing seat, above-mentioned moving part movable sleeve is established on oblique tongue pole, be equipped with one on the rotation piece and stir the portion, above-mentioned first elasticity piece that resets, third elasticity piece that resets are compression spring, compression spring cover is established on oblique tongue pole, big oblique tongue, first elasticity piece that resets, spacing seat, stir portion, moving part, third elasticity piece that resets sets gradually along oblique tongue pole axial, the both ends that first elasticity piece that resets are leaned on respectively on big oblique tongue and spacing seat, the both ends that third elasticity piece that resets are leaned on respectively on moving part and oblique tongue pole, stir the portion activity and set up between moving part and spacing seat.

In the above-mentioned double-inclined-tongue lock, the blocking member is strip-shaped and located on one side of the inclined-tongue rod, the blocking member extends along the length direction of the inclined-tongue rod, one end of the blocking member is a free end and the end is close to the large inclined-tongue hole, and the other end of the blocking member is rotatably disposed on the lock body.

In the above-mentioned double-oblique-tongue lock, the outward pushing portion is located between the blocking member and the oblique tongue rod, the outward pushing portion is provided with a guide surface for abutting against the blocking member, the guide surface gradually approaches to the oblique tongue rod along the direction in which the large oblique tongue extends out of the lock body, the blocking member is provided with a matching surface matching with the guide surface, and the inclination direction of the matching surface is consistent with the inclination direction of the guide surface.

In the above-mentioned double-latch lock, the blocking member is further provided with a guide portion for contacting the movable member, and the guide portion gradually gets away from the latch rod along a direction in which the large latch extends out of the large latch hole.

In the above-mentioned double-inclined-tongue lock, the elastic member is a torsion spring, and two ends of the torsion spring respectively lean against the blocking member and the lock body.

In the above-mentioned double-latch lock, the second elastic reset piece is a tension spring, and two ends of the tension spring are respectively connected to the lock body and the small latch bolt.

In the above-mentioned double latch lock, the linkage member is in a long strip shape and is parallel to the latch rod.

Compared with the prior art, the lock body has the advantages that the blocking piece is blocked on the motion path of the large latch bolt, so that the large latch bolt is locked, the large latch bolt cannot be pushed into the lock body by external force, and the anti-theft performance is higher; the large latch bolt and the small latch bolt can be synchronously opened in the unlocking process by rotating the key or the handle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a lock body; 2. a large oblique tongue; 3. a small oblique tongue; 4. a main bolt; 5. a rotating member; 6. a slanted tongue bar; 7. a limiting part; 8. a limiting seat; 9. a first elastic reset member; 10. a movable member; 11. a third elastic reset member; 12. a toggle part; 13. a torsion spring; 14. a blocking member; 15. a tension spring; 16. an outward pushing part; 17. a linkage member.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the utility model provides a pair of double-oblique-tongue lock, including lock body 1 and the big oblique tongue 2 of setting on lock body 1, little oblique tongue 3 and main spring bolt 4, big oblique tongue 2 holes have been seted up on the left side of lock body 1 in proper order, little oblique tongue 3 holes and spring bolt hole, the one end of big oblique tongue 2 stretches out outside lock body 1 through big oblique tongue 2 holes, the one end of little oblique tongue 3 stretches out outside lock body 1 through little oblique tongue 3 holes, main spring bolt 4 can stretch out outside lock body 1 through the spring bolt hole, big oblique tongue 2, the activity direction of little oblique tongue 3 and main spring bolt 4 is unanimous, equal side-to-side motion, big oblique tongue 2, little oblique tongue 3 and main spring bolt 4 homoenergetic move and contract to lock body 1 in.

Still be equipped with a rotation piece 5 on the lock body 1, rotate and be equipped with the square hole that is used for wearing to establish the square steel on the piece 5, rotate 5 and link to each other with main spring bolt 4 transmission, thereby unblank with the key or handle rotation square steel enables to rotate and makes main spring bolt 4 to the interior indentation of lock body 1.

The lock body 1 is also provided with an oblique tongue rod 6, the left end of the oblique tongue rod 6 is fixedly connected with the large oblique tongue 2, the right end extends along the motion direction of the large oblique tongue 2, the end part of the end is integrally formed with a limiting part 7, a limiting seat 8 is fixed on the lock body 1, and the oblique tongue rod 6 is arranged on the limiting seat 8 in a penetrating way;

a first elastic reset piece 9 is also arranged between the large latch bolt 2 and the limiting seat 8, the first elastic reset piece 9 is a compression spring, the compression spring is sleeved on the latch bolt rod 6, two ends of the compression spring respectively lean against the large latch bolt 2 and the limiting seat 8, and the compression spring is always in a compression state, so that the large latch bolt 2 always has a movement trend of moving leftwards;

still the activity cover is equipped with a moving part 10 and third elasticity piece 11 that resets on the latch bolt pole 6, third elasticity piece 11 that resets is a compression spring, spacing seat 8, moving part 10, third elasticity piece 11 and spacing portion 7 that resets set gradually along latch bolt pole 6 axial, the both ends bullet that third elasticity piece 11 resets leans on moving part 10 and spacing portion 7, above-mentioned rotate and extend a stirring portion 12 on the piece 5, stirring portion 12 and rotation 5 integrated into one piece, stirring portion 12 activity sets up between spacing seat 8 and moving part 10, under the effect of third elasticity piece 11 that resets, moving part 10 pastes all the time and leans on stirring portion 12, clockwise rotation piece 5 that rotates can make moving part 10 move right compression third elasticity piece 11.

The small latch bolt 3 is movably arranged on the lock body 1, a second elastic reset piece is also arranged on the lock body 1, the second elastic reset piece is a tension spring 15, two ends of the tension spring 15 are respectively connected to the small latch bolt 3 and the lock body 1, and the tension force of the tension spring 15 enables the small latch bolt 3 to always have a movement trend of extending out of the lock body 1;

a blocking piece 14 is arranged between the small oblique tongue 3 and the large oblique tongue 2, the blocking piece 14 is bent and is in a strip shape, the blocking piece 14 extends along the length direction of the oblique tongue rod 6, the left end of the blocking piece 14 is close to the hole of the large oblique tongue 2, the free end is arranged at the free end, the right end of the blocking piece 14 is rotatably arranged on the lock body 1, an elastic piece which enables the blocking piece 14 to always have a clockwise rotation movement trend is further arranged on the lock body 1, the elastic piece is a torsion spring 13, the torsion spring 13 is arranged at the rotating end of the blocking piece 14, and two ends of the torsion spring 13 are respectively abutted against the blocking piece 14 and the.

An outward pushing part 16 is fixedly arranged on the small latch bolt 3, the blocking piece 14 is abutted against the outward pushing part 16 under the action of the torsion spring 13, the outward pushing part 16 is positioned between the blocking piece 14 and the latch bolt rod 6, a guide surface used for being abutted against the blocking piece 14 is arranged on the outward pushing part 16, the guide surface gradually approaches to the latch bolt rod 6 along the direction that the large latch bolt 2 extends out of the lock body 1, a matching surface attached to the guide surface is arranged on the blocking piece 14 in a matching way, the inclination direction of the matching surface is consistent with the inclination direction of the guide surface, when the small latch bolt 3 extends out of the lock body 1, the blocking piece 14 is limited outside the motion path range of the large latch bolt 2 through the outward pushing part 16, when the small latch bolt 3 retracts linearly into the lock body 1, because the guide surface is obliquely arranged, the guide surface can be separated from the abutting surface of the blocking piece 14, so that the blocking piece 14 loses support and rotates clockwise, and the blocking piece 14 can finally move to the range of the motion path of the large latch tongue 2;

the small inclined tongue 3 is also fixedly provided with a linkage piece 17, the linkage piece 17 is always blocked on the motion path of the large inclined tongue 2, the linkage piece 17 is strip-shaped and extends along the axial direction of the inclined tongue rod 6, the linkage piece 17 is parallel to the inclined tongue rod 6, and when the blocking piece 14 is withdrawn from the motion path range of the large inclined tongue 2 and the large inclined tongue 2 retracts into the lock body 1, the small inclined tongue 3 is driven to retract into the lock body 1 through the linkage piece 17;

the blocking piece 14 is provided with a guiding part used for contacting with the moving piece 10, the guiding part is gradually far away from the latch bolt rod 6 along the direction that the large latch bolt 2 extends out of the hole of the large latch bolt 2, due to the structural characteristics of the guiding part, the rotating piece 5 rotates along the trend, and in the process that the moving piece 10 is pulled by the pulling part 12 to compress the spring rightwards, the moving piece 10 can push the blocking piece 14 to rotate anticlockwise, so that the moving piece moves out of the range of the moving path of the large latch bolt 2.

The working process is as follows: in the door closing process, the large latch bolt 2 and the small latch bolt 3 retract into the lock body 1 at the same time, the blocking piece 14 rotates along the potential needle until the blocking piece abuts against the side part of the large latch bolt 2, after the door is closed, the large latch bolt 2 extends out and resets under the action of the compression spring, the small latch bolt 3 cannot extend out due to the blocking of the door frame, the blocking piece 14 continues to rotate clockwise after being separated from the large latch bolt 2 until the blocking piece is blocked on the motion path of the large latch bolt 2, at the moment, the large latch bolt 2 is pressed through external force such as inserting pieces, and the large latch bolt 2 cannot push back due to the blocking effect of the blocking piece 14;

the rotating piece 5 can be rotated clockwise through a key or a handle to unlock, in the unlocking process, the rotating piece 5 pushes the moving piece 10 to move rightwards to compress the compression spring, before the blocking piece 14 does not exit out of the moving range of the large latch bolt 2, the large latch bolt 2 cannot retract into the lock body 1, the moving piece 10 continuously compresses the compression spring to move, the blocking piece 14 is pushed outwards in the moving process, the blocking piece 14 rotates anticlockwise until the blocking piece exits out of the moving path range of the large latch bolt 2, then the rotating piece 5 continues to rotate along with the cam pin, and the latch bolt rod 6 can drive the large latch bolt 2 to retract into the lock body 1, so that the large latch bolt 2 is unlocked.

When the door is not closed, the large latch bolt 2 and the small latch bolt 3 both extend out of the lock body 1 under the action of elastic force, the rotating piece 5 can be rotated clockwise through a key or a handle to enable the large latch bolt 2 to retract into the lock body 1, and meanwhile, the large latch bolt 2 can drive the small latch bolt 3 to retract towards the lock body 1 through the linkage piece 17.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A double-oblique-tongue lock is characterized by comprising a lock body (1), a large oblique tongue (2) and a small oblique tongue (3) which are arranged on the lock body (1), wherein the large oblique tongue (2) extends out of the lock body (1) through one end of a hole of the large oblique tongue (2), the small oblique tongue (3) extends out of one end of a hole of the small oblique tongue (3), the large oblique tongue (2) and the small oblique tongue (3) are movably arranged on the lock body (1) and have the same moving direction, the large oblique tongue (2) and the small oblique tongue (3) can move and retract into the lock body (1), a blocking piece (14) is further arranged on the lock body (1), an outer pushing part (16) is arranged on the small oblique tongue (3), the blocking piece (14) abuts against the outer pushing part (16) under the action of an elastic piece, and the outer pushing part (16) of the small oblique tongue (3) can be separated from the blocking piece (14) in the process of retracting into the lock body (1), so that the small oblique tongue (3) can move under the action of the elastic piece (2) and move finally under the large oblique tongue (14) The small latch bolt (3) is also fixedly provided with a linkage piece (17), and the linkage piece (17) is always blocked on the motion path of the large latch bolt (2).

2. A lock with double inclined tongues as defined in claim 1, wherein said large inclined tongue (2) is mounted on said lock body (1) by means of an inclined tongue rod (6), the large inclined tongue (2) is fixedly connected to the inclined tongue rod (6), the direction of movement of the large inclined tongue (2) is in accordance with the axial direction of the inclined tongue rod (6), the lock body (1) is further provided with a first elastic return member (9) which keeps the large inclined tongue (2) always in a movement tendency extending out of the hole of the large inclined tongue (2), and said lock body (1) is further provided with a second elastic return member which keeps the small inclined tongue (3) always in a movement tendency extending out of the lock body (1).

3. A lock with double cam as in claim 2 wherein said link member (17) is elongated and parallel to said cam bar (6).

4. The lock with the double inclined bolts as claimed in claim 2 or 3, wherein the lock body (1) is provided with a rotating piece (5), the rotating piece (5) is provided with a square hole for square steel to penetrate through, the lock body (1) is provided with a main bolt (4), the rotating piece (5) is in transmission connection with the main bolt (4) and the large inclined bolt (2), and the rotating piece (5) can drive the main bolt (4) and the large inclined bolt (2) to retract into the lock body (1) in the rotating process.

5. A lock with double inclined tongues as defined in claim 4, characterized in that the lock body (1) is further movably provided with a movable member (10), the movable member (10) is always attached to the rotatable member (5) under the action of a third elastic return member (11), the rotatable member (5) can drive the movable member (10) to move against the action of the third elastic return member (11) in the process of rotating in the direction of retracting the large inclined tongue (2) into the lock body (1), and the movable member (10) can act on the blocking member (14) in the process of moving to enable the movable member to exit from the range of the movement path of the large inclined tongue (2).

6. The lock with double inclined tongues as claimed in claim 5, wherein the lock body (1) is provided with a limiting seat (8), the inclined tongue bar (6) is arranged on the limiting seat (8) in a penetrating manner, the moving member (10) is movably sleeved on the inclined tongue bar (6), the rotating member (5) is provided with a shifting part (12), the first elastic resetting member (9) and the third elastic resetting member (11) are compression springs which are sleeved on the inclined tongue bar (6), the large inclined tongue (2), the first elastic resetting member (9), the limiting seat (8), the shifting part (12), the moving member (10) and the third elastic resetting member (11) are sequentially arranged along the axial direction of the inclined tongue bar (6), two ends of the first elastic resetting member (9) respectively lean against the large inclined tongue (2) and the limiting seat (8), two ends of the third elastic resetting member (11) respectively lean against the elastic resetting member (10) and the inclined tongue bar (6), the toggle part (12) is movably arranged between the moving part (10) and the limiting seat (8).

7. A lock with double inclined tongues as claimed in claim 5, wherein said blocking member (14) is strip-shaped and located at one side of the inclined tongue bar (6), the blocking member (14) extends along the length of the inclined tongue bar (6), one end of the blocking member (14) is a free end and is close to the hole of said large inclined tongue (2), and the other end of the blocking member (14) is rotatably arranged on the lock body (1).

8. A lock with double oblique tongues as defined in claim 5, wherein said outward pushing portion (16) is located between said blocking member (14) and the oblique tongue bar (6), the outward pushing portion (16) is provided with a guiding surface for abutting against the blocking member (14), the guiding surface is gradually close to the oblique tongue bar (6) along the direction in which the large oblique tongue (2) extends out of the lock body (1), said blocking member (14) is provided with a matching surface for abutting against the guiding surface, and the inclination direction of the matching surface is the same as the inclination direction of the guiding surface.

9. A lock with double cam tongues as defined in claim 5, wherein said blocking element (14) is further provided with a guiding portion for contact with said mobile element (10), said guiding portion being progressively distanced from the cam rod (6) in the direction of the hole of said large cam tongue (2) through which said large cam tongue (2) projects.

10. A lock with double cam tongues according to claim 5, characterised in that said elastic element is a torsion spring (13), the two ends of the torsion spring (13) springing against the blocking element (14) and the lock body (1), respectively.

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