Mute lock with damping effect on handle

Abstract

The utility model belongs to the field of door locks, and relates to a mute lock with a damping effect on a handle, the mute lock comprises a lock shell and the handle, a square core is arranged in the lock shell, the square core is sleeved with a handle linkage plate, the handle linkage plate and the square core rotate synchronously, a square core torsional spring is arranged on the handle linkage plate, a spring bolt is further arranged in the lock shell, a linkage groove is formed in the spring bolt, and the handle linkage plate is arranged in the linkage groove. The handle linkage plate extends towards the interior of the linkage groove to form a spring bolt linkage end, the handle linkage plate further extends to form a damping end, the damping end is connected with a one-way damping device, the one-way damping device does not generate a damping effect when the handle is unlocked, and the one-way damping device generates a damping effect when the handle is rebounded by the square core torsional spring. The device is provided with the handle and the handle linkage plate, and when the handle and the handle linkage plate are reset, the speed is reduced through the damping device, so that the mute effect is achieved.

Description

Technical Field

[0001] The invention belongs to the field of door locks and relates to a silent lock with a handle having a damping effect. Technical Background

[0002] Traditional door locks all include a lock shell, a handle is provided on the lock shell, the handle is connected to a square core in the lock shell, a handle linkage plate is provided on the square core, a square core lock tongue is provided on the handle linkage plate, the handle linkage plate extends a lock tongue linkage end toward the lock tongue, and by pulling the handle, the handle rotates to drive the square core to rotate and then drive the handle linkage plate to rotate, and the lock tongue linkage end on the handle linkage plate drives the lock tongue to retract. After opening the door, the operator's hand leaves the handle, and the handle linkage plate is reset under the drive of the square core torsion spring, thereby driving the handle to reset. Since the square core torsion spring has a large elasticity, the handle and the handle linkage plate are driven to reset quickly, which is easy to produce a loud noise. Summary of the invention

[0003] In view of the above problems, the present invention provides a silent lock with a handle having a damping effect. The device has a handle and a handle linkage plate, and when the handle and the handle linkage plate are reset, a damping device slows down the lock, thereby achieving a silent effect.

[0004] The object of the present invention is achieved in that:

[0005] A silent lock with a handle having a damping effect comprises a lock shell and a handle, wherein a square core is arranged in the lock shell, a handle linkage plate is sleeved on the square core, the handle linkage plate rotates synchronously with the square core, a square core torsion spring is arranged on the handle linkage plate, a lock tongue is also arranged in the lock shell, a linkage groove is arranged on the lock tongue, a lock tongue linkage end is extended from the handle linkage plate toward the linkage groove, a damping end is also extended from the handle linkage plate, a one-way damping device is connected to the damping end, the one-way damping device does not produce a damping effect when the handle is unlocked, and produces a damping effect when the handle is rebounded by the square core torsion spring.

[0006] Through the setting of the one-way damping device, the one-way damping device produces a damping effect when the handle is rebounded by the square core torsion spring, thereby reducing the speed when the handle and the handle linkage plate are reset, thereby avoiding the generation of loud noise and playing a silent role. In addition, since the one-way damping device does not produce a damping effect when the handle is unlocked, it will not be laborious to unlock.

[0007] The utility model is further configured as follows: the damping end is connected with a one-way hydraulic cylinder.

[0008] Through the setting of the one-way hydraulic cylinder, the one-way hydraulic cylinder produces a damping effect when the handle is rebounded by the square core torsion spring, thereby reducing the speed when the handle and the handle linkage plate are reset, thereby avoiding the generation of loud noise and playing a silent role. In addition, the one-way hydraulic cylinder does not produce a damping effect when the handle is unlocked, so there is no effort in unlocking.

[0009] The utility model is further configured as follows: the damping end is rotatably connected to a cross connecting seat through a pin shaft, a connecting groove is provided below the cross connecting seat, a pull rod of a single hydraulic cylinder is provided in the connecting groove, and a cotter pin is provided to pass through the connecting groove and the pull rod so that the pull rod is fixedly connected to the cross connecting seat.

[0010] Through the above arrangement, the arc motion of the damping end on the handle linkage plate and the linear motion of the unidirectional hydraulic cylinder are connected in transmission.

[0011] The utility model is further configured as follows: the cylinder body of the single-phase hydraulic cylinder is rotatably connected to the lock housing.

[0012] The utility model is further configured as follows: the handle linkage plate extends a damping end away from the locking tongue linkage end.

[0013] Through the above arrangement, the structural distribution inside the lock housing is made more reasonable.

[0014] The utility model is further configured as follows: a limiting groove is formed on the handle linkage plate, a limiting column is arranged in the limiting groove, and the limiting column is fixed on the lock shell.

[0015] By setting the limit groove and the limit column, the rotation range of the handle linkage plate can be controlled, and the operation range of the damping section and the pull rod can be indirectly controlled.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: the one-way damping device produces a damping effect when the handle is rebounded by the square core torsion spring, thereby reducing the speed at which the handle and the handle linkage plate are reset, thereby avoiding the generation of loud noise and achieving a silent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 This is the internal structure diagram of the utility model.

[0020] Figure 3 It is a structural schematic diagram of a single hydraulic cylinder and a handle linkage plate.

[0021] 1-lock housing; 2-handle; 3-square core; 4-handle linkage plate; 5-square core torsion spring; 6-lock tongue; 7-linkage groove; 8-lock tongue linkage end; 9-damping end; 10-one-way hydraulic cylinder; 11-pin shaft; 12-cross connecting seat; 13-connecting groove; 14-pull rod; 15-cotter pin; 16-cylinder body; 17-limiting groove; 18-limiting column. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] A silent lock with a handle having a damping effect comprises a lock shell 1 and a handle 2. A square core 3 is arranged in the lock shell 1, a handle linkage plate 4 is sleeved on the square core 3, the handle linkage plate 4 rotates synchronously with the square core 3, a square core torsion spring 5 is arranged on the handle linkage plate 4, a lock tongue 6 is also arranged in the lock shell 1, a linkage groove 7 is arranged on the lock tongue 6, a lock tongue linkage end 8 is extended from the handle linkage plate 4 toward the linkage groove 7, a damping end 9 is also extended from the handle linkage plate 4, and a one-way damping device is connected to the damping end 9. The one-way damping device does not produce a damping effect when the handle 2 is unlocked, and produces a damping effect when the handle 2 is rebounded by the square core torsion spring 5. By setting the one-way damping device, the one-way damping device produces a damping effect when the handle 2 is rebounded by the square core torsion spring 5, thereby reducing the speed of the handle 2 and the handle linkage plate 4 when they are reset, thereby avoiding the generation of loud noise and playing a silent role. In addition, since the one-way damping device does not produce a damping effect when the handle 2 is unlocked, it will not be laborious to unlock.

[0024] The damping section 9 is connected to a one-way hydraulic cylinder 10 .

[0025] The damping section 9 is rotatably connected to a cross connection seat 12 through a pin shaft 11, a connection groove 13 is provided below the cross connection seat 12, a pull rod 14 of a single hydraulic cylinder 10 is provided in the connection groove 13, and a cotter pin 15 is provided to pass through the connection groove 13 and the pull rod 14, so that the pull rod 14 is fixedly connected to the cross connection seat 12. Through the above arrangement, the arc motion of the damping section 9 on the handle linkage plate and the linear motion of the single hydraulic cylinder 10 are transmission-connected.

[0026] The cylinder body 16 of the one-way hydraulic cylinder is rotatably connected to the lock housing 1 .

[0027] The handle linkage plate 4 extends a damping end 9 away from the bolt linkage end 8. Through the above arrangement, the structural distribution of parts in the lock housing is more reasonable.

[0028] The handle linkage plate 4 is formed with a limit groove 17, in which a limit column 18 is arranged, and the limit column 18 is fixed to the lock housing 1. By setting the limit groove 17 and the limit column 18, the rotation range of the handle linkage plate 4 can be controlled, and the operation range of the damping section 9 and the pull rod 14 can be indirectly controlled.

[0029] The present invention has the characteristic that when the handle 2 and the handle linkage plate 4 are reset, a damping device is provided to reduce the speed, thereby achieving the mute effect.

[0030] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A silent lock with a handle having a damping effect, comprising a lock housing and a handle, wherein a square core is arranged in the lock housing, a handle linkage plate is sleeved on the square core, the handle linkage plate rotates synchronously with the square core, a square core torsion spring is arranged on the handle linkage plate, a lock tongue is also arranged in the lock housing, a linkage groove is arranged on the lock tongue, a lock tongue linkage end is extended from the handle linkage plate toward the linkage groove, and the characteristics are: A damping end is also extended from the handle linkage plate, and a one-way damping device is connected to the damping end. The one-way damping device does not produce a damping effect when the handle is unlocked, and produces a damping effect when the handle is rebounded by the square core torsion spring.

2. A silent lock with a handle having a damping effect according to claim 1, characterized in that: The damping end is connected with a one-way hydraulic cylinder.

3. A silent lock with a handle having a damping effect according to claim 2, characterized in that: The damping end is rotatably connected to a cross connection seat via a pin shaft, a connection groove is provided below the cross connection seat, a pull rod of a single hydraulic cylinder is provided in the connection groove, and a cotter pin is provided to pass through the connection groove and the pull rod so that the pull rod is fixedly connected to the cross connection seat.

4. A silent lock with a handle having a damping effect according to claim 3, characterized in that: The cylinder body of the one-way hydraulic cylinder is rotatably connected to the lock housing.

5. A silent lock with a handle having a damping effect according to claim 4, characterized in that: The handle linkage plate extends a damping end away from the lock tongue linkage end.

6. The silent lock with a handle having a damping effect according to claim 1, characterized in that: A limiting groove is formed on the handle linkage plate, a limiting column is arranged in the limiting groove, and the limiting column is fixed on the lock housing.

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