Automatic mute lock
By using a combination of gas spring and locking components in the automatic silent lock, the lock tongue is ensured to move slowly and smoothly when closing the door, which solves the problem of inadequate opening caused by attenuation of the lock tongue, and achieves strong and smooth locking and low noise of the lock Silence effect.
Patent Information
- Application Number
- CN202420647859.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the existing automatic silent lock, the ejection force of the lock tongue gradually decreases when it is ejected by a spring, resulting in the problem of the lock tongue being opened and popped out in place.
The gas spring and locking components are used, combined with the control wheel, probe rod, trigger hook and brake sleeve to ensure that the lock tongue moves at a constant speed and slow speed when closing the door, replace the original elastic mechanism and damping elements, and simplify the lock body structure.
The lock lock is strong and smooth, reducing noise, avoiding the problem of inadequate opening of the lock tongue caused by the attenuation of the pop-up force, and achieving a low-noise and quiet effect.
Smart Images
Figure CN222162271U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, in particular to an automatic silent lock. Background Art
[0002] A door lock is a piece of hardware installed on a door to maintain the privacy of a space. Its basic structure includes a lock tongue that can retract under the action of external force, and cooperates with a buckle box installed on the door frame to prevent the door from being opened by accidental circumstances such as wind.
[0003] In some special occasions, such as hospital wards, the requirement for a quiet environment is very high, and the sound of opening and closing the door is enough to become a noise source; for the noise caused by the collision between the door and the door frame, people have found many solutions, such as using damping hinges and setting rubber strips at the junction of the door and the door frame. After this problem is solved, the sound of the door lock when closing the door becomes quite loud and annoying.
[0004] Therefore, an automatic silent lock body is provided in the prior art to reduce the impact sound and mechanical transmission sound of the door lock when closing and locking the door. The existing automatic silent lock body usually uses a spring to eject the lock tongue and a damping tube to slow down the ejection speed of the lock tongue to achieve a silent effect.
[0005] However, when the lock tongue relies on the spring to pop out, the spring pop-up force is a process that gradually decreases. While the damping reduces the pop-up sound of the lock tongue of the lock body, the corresponding reduction in the spring force given to the lock tongue can easily lead to the lock tongue not being able to pop out in place. Utility Model Content
[0006] Therefore, the technical problem to be solved by the utility model is that when the lock tongue in the automatic silent lock body in the prior art relies on the spring to pop out, the spring pop-up force is a process that gradually decreases. While the damping reduces the pop-up sound of the lock tongue of the lock body, the correspondingly reduced pop-up force given to the lock tongue by the spring may eventually easily lead to the phenomenon that the lock tongue fails to pop out in place.
[0007] To this end, the utility model provides an automatic silent lock, comprising:
[0008] case;
[0009] A locking tongue, movably disposed in the housing;
[0010] A locking assembly is arranged on the lock tongue, and the locking assembly includes a control wheel movably arranged on the lock tongue, a probe rod connected to the control wheel and inserted in the lock tongue, and a trigger hook movably connected to the lock tongue and abutting against the probe rod;
[0011] A brake sleeve, disposed on the housing, the brake sleeve being configured to be connected with the trigger hook to keep the lock tongue inside the housing;
[0012] A gas spring, disposed between the housing and the locking tongue;
[0013] In the door closing state, the control wheel is configured to abut against the door frame to push the probe rod to move inside the housing, so that the probe rod pushes the trigger hook to rotate to separate from the brake sleeve, and the gas spring pushes the lock tongue out of the housing.
[0014] Optionally, the locking assembly further comprises a reset member disposed between the housing and the trigger hook, wherein the reset member has an elastic force for driving the trigger hook to maintain connection with the brake sleeve.
[0015] Optionally, the reset element is a torsion spring.
[0016] Optionally, a return assembly is further included, connected between the housing and the lock tongue, so as to drive the lock tongue to retract into the housing;
[0017] During the retraction of the lock tongue, the trigger hook is abutted by the brake sleeve and then rotates relative to the housing until an escape space is formed for the brake sleeve to enter the interior of the trigger hook, so as to be fixed to the brake sleeve under the action of the reset member.
[0018] Optionally, the trigger hook is used to abut against the brake sleeve on one side and is inclined;
[0019] During the retraction process of the lock tongue, the brake sleeve slides on the inclined side of the trigger hook to push the trigger hook to rotate until an escape space is formed for the brake sleeve to enter the interior of the trigger hook.
[0020] Optionally, the trigger hook is an arc-shaped structure.
[0021] Optionally, the locking assembly further includes a brake plate connected between the trigger hook and the probe rod.
[0022] Optionally, a sliding groove is provided on the lock tongue, and the brake sleeve is slidably disposed in the sliding groove.
[0023] Optionally, the return dial assembly includes a handle block and a toothed disc assembly both of which are hinged to the shell, and the toothed disc assembly is arranged between the handle block and the lock tongue to drive the lock tongue to retract into the shell.
[0024] Optionally, the brake sleeve is arranged at the hinge between the gear disc assembly and the housing.
[0025] The utility model provides an automatic silent lock, which has the following advantages:
[0026] The utility model provides an automatic silent lock, comprising a shell, a lock tongue, a locking assembly, a brake sleeve and a gas spring, wherein the lock tongue is movably arranged in the shell; the locking assembly is arranged on the lock tongue, and the locking assembly comprises a control wheel movably arranged on the lock tongue, a probe rod connected to the control wheel and inserted in the lock tongue, and a trigger hook movably connected to the lock tongue and abutting against the probe rod; the brake sleeve is arranged on the shell, and the brake sleeve is configured to be connected to the trigger hook to keep the lock tongue inside the shell; the gas spring is arranged between the shell and the lock tongue; in a closed door state, the control wheel is configured to abut against the door frame to push the probe rod to move toward the inside of the shell, so as to push the trigger hook to rotate through the probe rod to separate from the brake sleeve, and the gas spring pushes the lock tongue out of the shell.
[0027] This structure of automatic silent lock is based on the principle of no attenuation of gas spring output force and uniform slow movement. It is applied to the lock body, replacing the original elastic mechanism and damping element in the lock body and combining the two into one.
[0028] The lock body structure is simplified to overcome the negative functional defects caused by the use of elastic mechanisms and damping elements, so that the lock can be locked forcefully and smoothly with low noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0030] Figure 1 It is a schematic structural view of the automatic silent lock provided in an embodiment of the utility model in a locked-out state;
[0031] Figure 2 This is a schematic structural view of the automatic silent lock provided in an embodiment of the utility model in an open state;
[0032] Figure 3 for Figure 2 A schematic diagram of the structure after the toothed disc assembly is removed;
[0033] Figure 4 This is a schematic structural view of a locking assembly provided in an embodiment of the utility model.
[0034] Description of reference numerals:
[0035] 1- housing;
[0036] 2-Lock tongue;
[0037] 3- Control wheel;
[0038] 4-probe;
[0039] 5-Trigger Hook;
[0040] 6-brake sleeve;
[0041] 7- Gas spring;
[0042] 8-reset piece;
[0043] 9- brake plate;
[0044] 10-handle block;
[0045] 11-Sprocket assembly. DETAILED DESCRIPTION
[0046] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0047] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0048] Example
[0049] This embodiment provides an automatic silent lock, such as Figures 1 to 4 As shown, it includes a housing 1, a locking tongue 2, a locking assembly, a brake sleeve 6, a gas spring 7 and a return assembly.
[0050] In this embodiment, the locking assembly is arranged on the lock tongue 2, and the locking assembly includes a control wheel 3 movably arranged on the lock tongue 2, a probe rod 4 connected to the control wheel 3 and inserted into the lock tongue 2, and a trigger hook 5 movably connected to the lock tongue 2 and abutting against the probe rod 4; a brake sleeve 6 is arranged on the shell 1, and the brake sleeve 6 is configured to be connected to the trigger hook 5 to keep the lock tongue 2 inside the shell 1, and a gas spring 7 is arranged between the shell 1 and the lock tongue 2.
[0051] In the door closing state, the control wheel 3 is configured to abut against the door frame to push the probe rod 4 to move inside the housing 1, so that the trigger hook 5 is pushed to rotate and separate from the brake sleeve 6 through the probe rod 4, and the gas spring 7 pushes the lock tongue 2 out of the housing 1.
[0052] like Figure 2 and Figure 3 Shown is a schematic structural view of the automatic silent lock in an open state. In this state, the lock tongue 2 extends into the housing 1 interior, and now the brake sleeve 6 is connected with the trigger hook 5 to keep the lock tongue 2 in the housing 1 interior.
[0053] like Figure 1 Shown is a schematic structural view of the automatic silent lock in a locked-out state. In this state, the brake sleeve 6 is separated from the trigger hook 5, and the lock tongue 2 is extended to the outside of the housing 1 under the drive of the gas spring 7.
[0054] like Figure 2 to Figure 1 In the process shown, in the door closing state, the control wheel 3 abuts against the door frame to push the probe rod 4 to move toward the inside of the shell 1, pushing the probe rod 4 inward to push the trigger hook 5 to rotate relative to the shell 1 until the trigger hook 5 is separated from the brake sleeve 6. At this time, the lock tongue 2 loses its restriction and extends out of the shell 1 under the push of the gas spring 7.
[0055] In this embodiment, the locking assembly further comprises a reset member 8, which is disposed between the housing 1 and the trigger hook 5, and has an elastic force to drive the trigger hook 5 to maintain connection with the brake sleeve 6. The reset member 8 is preferably a torsion spring.
[0056] like Figure 1 As shown, when the lock tongue 2 extends out of the housing 1, after the trigger hook 5 is out of contact with the brake sleeve 6, a reset member 8 is provided between the housing 1 and the trigger hook 5, so that the trigger hook 5 can be reset by the elastic force of the reset member 8, so as to be connected with the brake sleeve 6 again when the lock tongue 2 is retracted into the housing 1.
[0057] In this embodiment, the automatic silent lock further includes a return dial assembly, which is connected between the housing 1 and the lock tongue 2 to drive the lock tongue 2 to retract into the housing 1. During the retraction of the lock tongue 2, the trigger hook 5 is abutted by the brake sleeve 6 and then rotates relative to the housing 1 until an escape space is formed for the brake sleeve 6 to enter the interior of the trigger hook 5, so as to be fixed to the brake sleeve 6 under the action of the reset member 8.
[0058] like Figure 4 As shown, the trigger hook 5 is an arc-shaped structure, and the trigger hook 5 is inclined on one side for contacting with the brake sleeve 6. When the lock tongue 2 is retracted, the brake sleeve 6 slides on the inclined side of the trigger hook 5 to push the trigger hook 5 to rotate until an escape space is formed for the brake sleeve 6 to enter the inside of the trigger hook 5.
[0059] As described above, a reset member 8 is provided between the housing 1 and the trigger hook 5, and the trigger hook 5 can be reset by the elastic force of the reset member 8. Therefore, during the retraction of the lock tongue 2, the side of the trigger hook 5 close to the brake sleeve 6 first contacts the brake sleeve 6. By setting this side in an inclined shape, when the trigger hook 5 abuts against the brake sleeve 6, the brake sleeve 6 will slide on the inclined side. Since the brake sleeve 6 is hinged to the housing 1, during the further retraction of the lock tongue 2, the trigger hook 5 will rotate due to the abutment of the brake sleeve 6 until an escape space is formed for the brake sleeve 6 to enter the inside of the trigger hook 5. After the brake sleeve 6 passes through the escape space and enters the inside of the trigger hook 5, the trigger hook 5 is reset under the action of the reset member 8 to achieve fixation with the brake sleeve 6.
[0060] In this embodiment, if Figures 1 to 3 As shown, the locking assembly further includes a brake plate 9 connected between the trigger hook 5 and the probe rod 4. The lock tongue 2 is provided with a sliding groove, and the brake sleeve 6 is slidably arranged in the sliding groove. The movement trajectory of the lock tongue 2 can be restricted by setting the sliding groove.
[0061] In this embodiment, the return dial assembly includes a handle block 10 and a toothed disc assembly 11, both of which are hinged to the housing 1. The toothed disc assembly 11 is arranged between the handle block 10 and the lock tongue 2 to drive the lock tongue 2 to retract into the housing 1, and the brake sleeve 6 is arranged at the hinge between the toothed disc assembly 11 and the housing 1.
[0062] Specific as Figure 1 As shown, the handle block 10 is hinged to the housing 1 at the lock hole and can be rotated by a key. A meshing gear is provided between the handle block 10 and the toothed disc assembly 11 so that the rotation of the handle block 10 can drive the toothed disc assembly 11 to rotate together. Figure 4 As shown, a slot is provided on the plate-like structure of the lock tongue 2 inside the housing 1 , and a protrusion is provided on the toothed disc assembly 11 to slide against the groove wall of the slot, so that the lock tongue 2 can be driven into the housing 1 by rotating the toothed disc assembly 11 .
[0063] In the automatic silent lock provided in this embodiment, the gas spring 7 is applied to the lock body, replacing the original elastic mechanism and damping element in the lock body and combining the two into one, simplifying the lock body structure, overcoming the negative functional defects caused by the use of elastic mechanisms and damping elements, and making the lock powerful and smooth, and low-noise and silent. Specifically, the larger the volume of the air storage chamber of the air spring 7, the smaller the air pressure change affected by the change in the chamber volume caused by the movement of the piston, and conversely, the smaller the volume of the air storage chamber, the larger the air pressure change affected by the change in the chamber volume caused by the movement of the piston. In this way, the output force of the air spring 7 can be adjusted within the allowable range by adjusting the volume of the air storage chamber, thereby solving the problem of the sound caused by the rapid collision of the lock tongue 2 with the lock shell panel when locking out. At the same time, due to the adjustment of the air spring 7, the damping mechanism for reducing noise can also be omitted.
[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. An automatic silent lock, It is characterized in that include: Housing (1); A locking tongue (2) movably arranged in the housing (1); A locking assembly is arranged on the lock tongue (2), and comprises a control wheel (3) movably arranged on the lock tongue (2), a probe rod (4) connected to the control wheel (3) and inserted into the lock tongue (2), and a trigger hook (5) movably connected to the lock tongue (2) and abutting against the probe rod (4); a brake sleeve (6) disposed on the housing (1), the brake sleeve (6) being configured to be connected to the trigger hook (5) so as to keep the locking tongue (2) inside the housing (1); A gas spring (7) is arranged between the housing (1) and the locking tongue (2); In the door closing state, the control wheel (3) is configured to abut against the door frame to push the probe rod (4) to move toward the inside of the housing (1), so that the trigger hook (5) is pushed by the probe rod (4) to rotate and separate from the brake sleeve (6), and the gas spring (7) pushes the lock tongue (2) to extend out of the housing (1).
2. The automatic silent lock according to claim 1, It is characterized in that The locking assembly further comprises a reset member (8) which is arranged between the housing (1) and the trigger hook (5), and the reset member (8) has an elastic force for driving the trigger hook (5) to maintain connection with the brake sleeve (6).
3. The automatic silent lock according to claim 2, It is characterized in that The reset element (8) is a torsion spring.
4. The automatic silent lock according to claim 2, It is characterized in that It also comprises a retraction assembly connected between the housing (1) and the lock tongue (2) to drive the lock tongue (2) to retract into the housing (1); During the retraction of the locking tongue (2), the trigger hook (5) is abutted against the brake sleeve (6) and then rotates relative to the housing (1) until an escape space is formed for the brake sleeve (6) to enter the interior of the trigger hook (5), so as to be fixed to the brake sleeve (6) under the action of the reset member (8).
5. The automatic silent lock according to claim 4, It is characterized in that The trigger hook (5) is used to abut against the brake sleeve (6) at one side in an inclined shape; During the retraction process of the lock tongue (2), the brake sleeve (6) slides on the inclined side of the trigger hook (5) to push the trigger hook (5) to rotate until an escape space is formed for the brake sleeve (6) to enter the interior of the trigger hook (5).
6. The automatic silent lock according to claim 5, It is characterized in that The trigger hook (5) is an arc-shaped structure.
7. The automatic silent lock according to any one of claims 1 to 6, It is characterized in that The locking assembly further comprises a brake plate (9) connected between the trigger hook (5) and the probe rod (4).
8. The automatic silent lock according to claim 7, It is characterized in that The lock tongue (2) is provided with a sliding groove, and the brake sleeve (6) is slidably arranged in the sliding groove.
9. The automatic silent lock according to claim 4, It is characterized in that The return assembly comprises a handle block (10) and a toothed disc assembly (11) both of which are hinged to the housing (1); the toothed disc assembly (11) is arranged between the handle block (10) and the lock tongue (2) to drive the lock tongue (2) to retract into the housing (1).
10. The automatic silent lock according to claim 9, It is characterized in that The brake sleeve (6) is arranged at the hinged joint between the toothed disc assembly (11) and the housing (1).