A locking tongue linkage structure of a lock body

Abstract

The utility model relates to a kind of safety tongue linkage structure of lock body, including oblique lock tongue, main lock tongue and safety tongue being set on the lock body in telescopic, lock body is equipped with transmission rod, oblique tongue paddle, main tongue paddle and transmission mechanism, one end of transmission rod is in contact with oblique tongue paddle and can promote oblique tongue paddle rotation, oblique tongue paddle has the first poking part of poking oblique lock tongue telescopic, oblique tooth paddle is equipped with first tooth structure, main tongue paddle is equipped with the second tooth structure meshed with first tooth structure, main tongue paddle is used to drive main lock tongue telescopic;Transmission mechanism includes sliding sheet and swing part, sliding sheet can be slid relative to lock body and has the end of contact in contact with transmission rod, sliding sheet is used to drive swing part rotation, swing part is connected with safety tongue and is driven by telescopic by rotation. Safety tongue is linked together with transmission rod by transmission mechanism, so that user can use key to open safety tongue of mislocking from outside, reduce the situation that need to destroy lock body to open door due to mislocking safety lock.

Description

Technical Field

[0001] This utility model relates to a locking tongue linkage structure for a lock body. Background Technology

[0002] Currently, most locks on the market use a key to turn the lock cylinder. As the cylinder rotates, it drives an internal transmission mechanism via a dial, opening the bolt and main bolt. The lock body typically includes a safety bolt, which is opened / closed by a safety knob located on the inside of the lock body, meaning the main bolt cannot be opened from the outside. While this provides a certain level of security, in practice, children inside the door may accidentally turn the safety knob, causing the main bolt to lock unintentionally. Parents outside the door will then be unable to open the door with the key, potentially leading to the lock being forcibly broken to open the door.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems by providing a lock body safety tongue linkage structure. This linkage structure can solve the problem that the safety tongue cannot be opened from the outside.

[0005] To achieve the above objectives, this utility model provides a lock body locking tongue linkage structure, which includes a slanted locking tongue, a main locking tongue, and a locking tongue that are telescopically mounted on the lock body. The lock body is provided with a transmission rod, a slanted locking tongue deflector, a main locking tongue deflector, and a transmission mechanism. One end of the transmission rod abuts against the slanted locking tongue deflector and can push the slanted locking tongue deflector to rotate. The slanted locking tongue deflector has a first actuating part that actuates the extension and retraction of the slanted locking tongue. The slanted locking tongue deflector has a first tooth structure, and the main locking tongue deflector has a second tooth structure that meshes with the first tooth structure. The main locking tongue deflector is used to drive the extension and retraction of the main locking tongue. The transmission mechanism includes a sliding plate and a swinging part. The sliding plate can slide relative to the lock body and has a supporting end that abuts against the transmission rod. The sliding plate is used to drive the swinging part to rotate. The swinging part is connected to the locking tongue and drives the locking tongue to extend and retract through rotation.

[0006] In one or more embodiments, a clutch plate is provided on the sliding plate, the clutch plate abuts against the swing part to drive it to rotate, and the clutch plate is fixed on the sliding plate by screws.

[0007] In one or more embodiments, the sliding piece is provided with a first sliding groove, the first sliding groove extends along the moving direction of the transmission rod, and the lock body is provided with a first positioning post passing through the first sliding groove.

[0008] In one or more embodiments, the locking tongue includes a tongue body, a connecting rod, and a second actuating part. The tongue body is fixed to the front side of the connecting rod, the connecting rod is slidably connected to the lock body, and the second actuating part is rotatably connected to the lock body. The second actuating part is used to actuate the connecting rod to slide, and the swinging part is connected to the second actuating part.

[0009] In one or more embodiments, the second actuating part is provided with a connection hole, and the lock body has a clearance opening at the position corresponding to the connection hole, allowing the movable connection hole to be exposed.

[0010] In one or more embodiments, the connecting rod has a second sliding groove, which is arranged along the sliding direction of the connecting rod. The lock body is provided with a second positioning post passing through the second sliding groove, and the second positioning post is provided with a pressing block for pressing the connecting rod.

[0011] In one or more embodiments, the main latch is provided with an arc-shaped groove, and the main latch lever is provided with a connecting post extending into the arc-shaped groove, the distribution of the arc-shaped groove matching the rotation direction of the main latch lever.

[0012] Compared with the prior art, the advantages of this utility model are: by linking the safety tongue and the transmission rod together through the transmission mechanism, the user can use a key from the outside to open the safety tongue if it is accidentally locked, thus reducing the need to damage the lock body to open the door due to accidental locking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the lock body in this embodiment. Detailed Implementation

[0014] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0015] Please refer to the appendix. Figure 1This application provides a lock body locking tongue linkage structure, which includes a slanted locking tongue 2, a main locking tongue 3, and a locking tongue that are telescopically mounted on the lock body 1. The lock body 1 is provided with a transmission rod 4, a slanted locking tongue deflector 5, a main locking tongue deflector 6, and a transmission mechanism. One end of the transmission rod 4 abuts against the slanted locking tongue deflector 5 and can push the slanted locking tongue deflector 5 to rotate. The slanted locking tongue deflector 5 has a first actuating part 51 that actuates the slanted locking tongue 2. The slanted locking tongue deflector 5 is provided with a first tooth structure 7. The main locking tongue deflector 6 is provided with a second tooth structure 8 that meshes with the first tooth structure 7. The main locking tongue deflector 6 is used to drive the main locking tongue 3 to extend and retract. The transmission mechanism includes a sliding piece 9 and a swinging part 10. The sliding piece 9 can slide relative to the lock body 1 and has a supporting end 91 that abuts against the transmission rod 4. The sliding piece 9 is used to drive the swinging part 10 to rotate. The swinging part 10 is connected to the locking tongue and drives the locking tongue to extend and retract by rotating. When the user unlocks the lock cylinder with the key, the dial on the lock cylinder drives the transmission rod 4 to move. During the movement of the transmission rod, the oblique latch 5 and the sliding plate 9 are triggered. While the oblique latch 5 is rotating, the main latch 6 will also rotate. During the sliding of the sliding plate 9, the swing part 10 will also rotate accordingly. Therefore, the oblique latch 2, the main latch 3 and the safety latch can be opened at the same time.

[0016] The sliding plate 9 is provided with a clutch plate 11, which abuts against the swing part 10 to drive it to rotate. The clutch plate 11 is fixed to the sliding plate 9 by a screw 12. The lock body manufacturer can set whether the safety tongue can be opened outdoors according to the user's needs. Specifically, when the screw 12 fixes the clutch plate 11 to the sliding plate 9, the safety tongue can be opened from the outside; when the screw 12 is unscrewed, the clutch plate 11 is separated from the sliding plate 9. At this time, the sliding plate 9 will not move the clutch plate when it slides, so it cannot drive the safety tongue 3.

[0017] The sliding piece 9 is provided with a first sliding groove 13, which extends along the moving direction of the transmission rod 4. The lock body 1 is provided with a first positioning post 14 passing through the first sliding groove 13. The first positioning post 14 can ensure the stability of the sliding direction of the sliding piece 9.

[0018] The safety latch includes a latch body 15, a connecting rod 16, and a second actuating part 17. The latch body 15 is fixed to the front side of the connecting rod 16 by bolts. The connecting rod 16 is slidably connected to the lock body 1. The second actuating part 17 is rotatably connected to the lock body 1 and is used to actuate the connecting rod 16. The swing part 10 is connected to the second actuating part 17. The second actuating part 17 is provided with a connecting hole 18. The lock body 1 has a clearance opening at the position corresponding to the connecting hole 18, allowing the connecting hole 18 to be exposed. The connecting hole is used for connecting the safety knob.

[0019] The connecting rod 16 has a second sliding groove 19, which is set along the sliding direction of the connecting rod 16. The lock body 1 has a second positioning post passing through the second sliding groove 19. The cooperation between the second positioning post and the second sliding groove can ensure that the sliding direction of the connecting rod is stable and does not swing. The second positioning post has a pressure block 20 for pressing the connecting rod. The pressure block 20 can press down the connecting rod 16 to prevent it from moving up and down.

[0020] The main latch 3 is provided with an arc-shaped groove 21, and the main latch lever 6 is provided with a connecting post that extends into the arc-shaped groove 21. The distribution of the arc-shaped groove 21 matches the rotation direction of the main latch lever 6. The cooperation between the arc-shaped groove 21 and the connecting post causes the main latch 3 to extend and retract during the rotation of the main latch lever.

[0021] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A locking tongue linkage structure for a lock body, characterized in that: The lock body (1) includes a telescopically mounted oblique latch (2), a main latch (3), and a safety latch. The lock body (1) is provided with a transmission rod (4), an oblique latch lever (5), a main latch lever (6), and a transmission mechanism. One end of the transmission rod (4) abuts against the oblique latch lever (5) and can push the oblique latch lever (5) to rotate. The oblique latch lever (5) has a first actuating part (51) that actuates the oblique latch (2) to extend and retract. The oblique latch lever (5) is provided with a first tooth structure (7). The main latch lever (6) is provided with a second tooth structure (8) that meshes with the first tooth structure (7). The main latch lever (6) is used to drive the main latch (3) to extend and retract. The transmission mechanism includes a sliding piece (9) and a swinging part (10). The sliding piece (9) can slide relative to the lock body (1) and has a resisting end (91) that abuts against the transmission rod (4). The sliding piece (9) is used to drive the swinging part (10) to rotate. The swinging part (10) is connected to the safety latch and drives the safety latch to extend and retract by rotating.

2. The locking tongue linkage structure of the lock body according to claim 1, characterized in that: The sliding plate (9) is provided with a clutch plate (11), which abuts against the swing part (10) to drive it to rotate. The clutch plate (11) is fixed on the sliding plate (9) by screws (12).

3. The locking tongue linkage structure of the lock body according to claim 1, characterized in that: The sliding plate (9) is provided with a first sliding groove (13), which extends along the moving direction of the transmission rod (4), and the lock body (1) is provided with a first positioning post (14) passing through the first sliding groove (13).

4. The locking tongue linkage structure of the lock body according to claim 1, characterized in that: The safety tongue includes a tongue body (15), a connecting rod (16), and a second actuating part (17). The tongue body (15) is fixed to the front side of the connecting rod (16), the connecting rod (16) is slidably connected to the lock body (1), and the second actuating part (17) is rotatably connected to the lock body (1). The second actuating part (17) is used to actuate the connecting rod (16) to slide. The swing part (10) is connected to the second actuating part (17).

5. The locking tongue linkage structure of the lock body according to claim 4, characterized in that: The second actuating part (17) is provided with a connecting hole (18), and the lock body (1) has a clearance opening at the position corresponding to the connecting hole (18) to allow the movable connecting hole (18) to be exposed.

6. A locking tongue linkage structure for a lock body according to claim 4 or 5, characterized in that: The connecting rod (16) has a second sliding groove (19) which is set along the sliding direction of the connecting rod (16). The lock body (1) is provided with a second positioning post that passes through the second sliding groove (19) and a pressure block (20) that holds the connecting rod is provided on the second positioning post.

7. The locking tongue linkage structure of the lock body according to claim 1, characterized in that: The main latch (3) is provided with an arc-shaped groove (21), and the main latch lever (6) is provided with a connecting post extending into the arc-shaped groove (21). The distribution of the arc-shaped groove (21) matches the rotation direction of the main latch lever (6).

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