Door lock with rotary switch button

Abstract

The invention relates to a door lock with a rotary switch button, comprising a housing and a puller disposed in the housing and used to drive the bolt to unlock or lock, a knob that can drive the puller to rotate is disposed on the outer side of the housing, the puller is connected to a reset mechanism that drives it to reset, and a switch mechanism for limiting the rotation of the knob is disposed between the housing and the knob, so that the knob is in a locked state in a natural state and cannot drive the puller to rotate together. The invention adds a switch mechanism to the knob so that it cannot be twisted directly, and the switch needs to be pressed to rotate the knob when opening the door, thereby effectively enhancing the safety performance of the door lock and preventing young children from opening the door lock privately.

Description

Technical Field

[0001] The invention relates to the technical field of locks, in particular to a door lock with a rotary switch button. Background Art

[0002] In order to facilitate the use inside the door, the door lock in the existing technology is usually provided with a knob on one side of the door. The door can be quickly unlocked by turning the knob without inserting a key. However, the convenience of unlocking often leads to reduced safety, especially the door lock is easily opened by young children and runs out of the room. In order to improve the safety performance of the door lock, the present invention creates a door lock with a rotary switch button to enhance the safety performance of the door lock. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a door lock with a rotary switch button and high safety.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A door lock with a rotary switch button comprises a shell and a puller arranged in the shell and used to drive a lock tongue to unlock or lock, a knob capable of driving the puller to rotate is arranged on the outer side of the shell, the puller is connected to a reset mechanism for driving it to reset, and a switch mechanism for limiting the rotation of the knob is arranged between the shell and the knob, so that the knob is in a locked state in a natural state and cannot drive the puller to rotate together.

[0006] As a preferred embodiment, it is further defined as: the switch mechanism includes a button arranged on the knob, a first limit groove opening toward the knob is arranged on the housing, the knob is provided with a second limit groove corresponding to the first limit groove and communicating with the first limit groove after assembly, the switch mechanism also includes a limit column and a first return spring arranged in the first limit groove, the limit column is clamped between the first limit groove and the second limit groove under the push of the elastic force of the first return spring, so that the knob is in a locked state and cannot rotate; when the button is pressed, the button drives the limit column to exit the second limit groove, so that the knob is in an unlocked state and can rotate; a second return spring is arranged in the knob to drive the button to reset.

[0007] As a preferred embodiment, it is further defined as: a mounting portion is formed on the outer side of the shell facing the knob, a first through hole is provided in the mounting portion, and the knob is provided with a connecting portion that can be inserted into the first through hole, and the connecting portion is fixedly connected with the pull after passing through the first through hole; the first limiting groove is provided on the mounting portion and is located on the outside of the first through hole, and the second limiting groove is provided on the outside of the connecting portion corresponding to the first limiting groove.

[0008] As a preferred embodiment, it is further defined as: the switch mechanism also includes a pushing column arranged in the second limit groove, the button is arranged on the outer side of the knob, the pressing direction of the button is perpendicular to the moving direction of the limit column, and a pressing notch vertically connected to the second limit groove is also arranged in the knob, and a slope facing the button is arranged on the side of the push column away from the limit column, the button has a pushing portion that can pass through the pressing notch and abut on the inclined surface, and the second return spring is sleeved on the pushing portion; when the button is pressed, the pushing portion pushes the push column to move toward the limit column through the inclined surface so that the limit column exits the second limit groove; the side of the limit column facing the knob is a ball head, and when the end face of the push column facing the limit column is flush with the notch of the second limit groove, the knob is in an unlocked state.

[0009] As a preferred embodiment, it is further defined as: the knob is mainly composed of a knob shell and a knob cover covering the front end of the knob shell, the second limit groove, connecting portion and pressing notch are respectively arranged on the knob shell, and a key notch for the button to slide up and down is arranged on the outer side of the knob shell; a limit block protruding outward is arranged on the outer side of the button, and after assembly, the limit block abuts against the inner edge of the key notch.

[0010] As a preferred embodiment, it is further defined as: a threaded hole is provided in the connecting portion, and the connecting portion is threadedly connected to the puller via a screw.

[0011] As a preferred embodiment, it is further defined as: a key is formed on the front end of the connecting portion, and the pull is provided with a slot matching the key.

[0012] As a preferred embodiment, it is further defined as: a first toggle portion for toggle the lock tongue is provided at one end of the toggle, and a second toggle portion matched with the first toggle portion is symmetrically provided at the other end of the toggle; the reset mechanism includes a limiter hinged in the shell, one end of the limiter abuts against the outer side of the toggle, the other end of the limiter is provided with a first spring column, and a second spring column is also provided in the shell; the reset mechanism also includes a return spring, one end of the return spring is sleeved on the first spring column, and the other end of the return spring is sleeved on the second spring column.

[0013] The beneficial effect of the invention is that the invention adds a switch mechanism to the knob so that it cannot be twisted directly. When opening the door, the switch needs to be pressed to turn the knob, thereby effectively enhancing the safety performance of the door lock and preventing young children from opening the door lock privately. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is one of the structural schematic diagrams created by the present invention;

[0015] Figure 2 It is an exploded schematic diagram of the invention;

[0016] Figure 3 It is a cross-sectional view of the invention;

[0017] Figure 4 yes Figure 3 The enlarged cross-sectional view at point A in the middle;

[0018] Figure 5 It is a schematic diagram of the structure of the knob;

[0019] Figure 6 This is an exploded diagram of the knob;

[0020] Figure 7 is a schematic diagram of the structure of the knob housing;

[0021] Figure 8 It is a schematic diagram of the key structure;

[0022] Fig. 9 It is a structural diagram of the pull-and-drag;

[0023] Fig.10 It is the second structural schematic diagram of the invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] As attached Figure 1 , Attachment Figure 2 As shown, a door lock with a rotary switch button comprises a shell 1 and a puller 3 arranged in the shell 1 and used to drive a lock tongue 2 to unlock or lock, a knob 4 which can drive the puller 3 to rotate is arranged on the outer side of the shell 1, and the puller 3 is connected with a reset mechanism which drives it to reset, and a switch mechanism which is used to limit the rotation of the knob 4 is arranged between the shell 1 and the knob 4, so that the knob 4 is in a locked state in a natural state and cannot drive the puller 3 to rotate together, and by adding a switch mechanism to the knob, it cannot be twisted directly, and the switch needs to be pressed to rotate the knob when opening the door, thereby effectively enhancing the safety performance of the door lock and preventing young children from opening the door lock privately.

[0026] In this embodiment, as shown in the attached Figure 3 , Attachment Figure 4As shown, the switch mechanism includes a button 5 arranged on the knob 4, a first limiting groove 11 with an opening toward the knob 4 is arranged on the housing 1, and the knob 4 is provided with a second limiting groove 41 corresponding to the first limiting groove 11 and communicating with the first limiting groove 11 after assembly, and the switch mechanism also includes a limiting column 6 and a first return spring 7 arranged in the first limiting groove 11, and the limiting column 6 is clamped between the first limiting groove 11 and the second limiting groove 41 under the elastic force of the first return spring 7, so that the knob 4 is in a locked state and cannot be rotated; the knob 4 is locked with the housing 1 by the limiting column 6, and the structure is simple. When the button 5 is pressed, the button 5 drives the limiting column 6 to withdraw from the second limiting groove 41, so that the knob 4 is in an unlocked state and can be rotated; the knob 4 is provided with a second return spring 8 that drives the button 5 to return, and the button 5 is used to realize the push-type unlocking, which has a simple structure and is easy to use.

[0027] In order to ensure the assembly space and improve the assembly accuracy, the housing 1 is provided with a mounting portion 12 protruding outwardly on one side facing the knob 4, and a first through hole 13 is provided in the mounting portion 12. The knob 4 is provided with a connecting portion 42 that can be inserted into the first through hole 13. The connecting portion 42 is fixedly connected with the puller 3 after passing through the first through hole 13. In the prior art, there are many ways of fixed connection, such as threaded connection, snap connection, welding, riveting, etc. In this embodiment, threaded connection is preferred, which is easy to assemble. The first limiting groove 11 is provided on the mounting portion 12 and is located on the outside of the first through hole 13, and the second limiting groove 41 is provided on the outside of the connecting portion 42 corresponding to the first limiting groove 11.

[0028] Furthermore, in order to facilitate the user to unlock the door, the switch mechanism further includes a push column 9 disposed in the second limit groove 41, and the button 5 is disposed on the outside of the knob 4. The pressing direction of the button 5 is perpendicular to the moving direction of the limit column 6, which is more convenient for the user to unlock the door by pressing the button 5 while holding the knob 4. The knob 4 is also provided with a pressing notch 43 that is perpendicular to the second limit groove 41, and the push column 9 is provided with an inclined surface 91 facing the button 5 on the side away from the limit column 6. Figure 8As shown, the button 5 has a pushing portion 51 that can pass through the pressing notch 43 and abut against the inclined surface 91, and the second return spring 8 is sleeved on the pushing portion 51; when the button 5 is pressed, the pushing portion 51 pushes the pushing column 9 to move toward the limiting column 6 through the inclined surface 91 so that the limiting column 6 exits the second limiting groove 41; through the inclined surface 91 of the pushing column 9, the transmission conversion of the force in the 90-degree direction is realized, the structure is simple, and the design is ingenious. The side of the limiting column 6 facing the knob 4 is a ball head, which can prevent mechanical jamming and is more conducive to the rotation of the knob 4. When the end face of the pushing column 9 facing the limiting column 6 is flush with the notch of the second limiting groove 41, the knob 4 is in an unlocked state.

[0029] In order to further disclose the structure of the knob 4 and more clearly disclose the assembly relationship between each component and the knob 4, as shown in the attached Figure 5 , Attachment Figure 6 As shown, the knob 4 is mainly composed of a knob housing 401 and a knob cover 402 covering the front end of the knob housing 401, the second limiting groove 41, the connecting portion 42 and the pressing notch 43 are respectively arranged on the knob housing 401, and the outer side of the knob housing 401 is provided with a key notch 403 for the key 5 to slide up and down; as shown in the attached Figure 8 As shown, the outer side of the button 5 is provided with a stopper 52 protruding outward. After assembly, the stopper 52 abuts against the inner edge of the button notch 403, and limits the button 5 to prevent the button 5 from popping out of the knob 4 under the elastic force of the second return spring 8. In this embodiment, the knob cover 402 is provided with a protrusion 46 on the side facing the knob housing 401. After assembly, the protrusion 46 is inserted into the second stopper groove 41 to limit the push column 9. The knob housing 401 and the knob cover 402 are fixed by a threaded connection.

[0030] In this embodiment, a threaded hole 44 is provided in the connection part 42, and the connection part 42 is threadedly connected to the puller 3 by a screw 100. Specifically, the screw 100 is a cross head screw in the prior art. In order to facilitate the knob 4 to drive the puller 3 to rotate, a key 45 is formed on the front end of the connection part 42, and the puller 3 is provided with a slot 31 matching the key 45. During assembly, after the connection part 42 passes through the first through hole 13, the key 45 is inserted into the slot 31, and the screw 100 passes through the slot 31 and is threadedly connected to the threaded hole 44. The structure is simple and the design is ingenious.

[0031] As attached Fig. 9 , Attachment Fig.10As shown, one end of the puller 3 is provided with a first toggle part 32 for toggle the lock tongue 2, and the other end of the puller 3 is symmetrically provided with a second toggle part 33 adapted to the first toggle part 32; the reset mechanism includes a limiter 10 hinged in the housing 1, one end of the limiter 10 abuts against the outside of the puller 3, and at the same time abuts against the outside of the first toggle part 32 and the second toggle part 33. The other end of the limiter 10 is provided with a first spring column 101, and the housing 1 is also provided with a second spring column 102. The reset mechanism also includes a return spring 103, one end of the return spring 103 is sleeved on the first spring column 101, and the other end of the return spring 103 is sleeved on the second spring column 102. When the knob 4 drives the puller 3 to rotate, the puller 3 also drives the limiter 10 to rotate, and at the same time the limiter 10 stretches the return spring 103; after the belt is unlocked, the return spring 103 pulls the limiter 10 to reset, and at the same time the limiter 10 pushes the puller 3 to rotate and reset, and the knob 4 rotates and resets along with the puller, which has a simple structure and ingenious design.

Claims

1. A door lock with a rotary switch button, comprising a housing (1) and a pull (3) arranged in the housing (1) and used to drive a lock tongue (2) to unlock or lock, a knob (4) capable of driving the pull (3) to rotate is arranged on the outer side of the housing (1), and the pull (3) is connected to a reset mechanism for driving it to reset, characterized in that A switch mechanism for limiting the rotation of the knob (4) is provided between the housing (1) and the knob (4), so that the knob (4) is in a locked state in a natural state and cannot drive the puller (3) to rotate together; the switch mechanism comprises a key (5) provided on the knob (4); the housing (1) is provided with a first limiting groove (11) opening toward the knob (4); the knob (4) is provided with a second limiting groove (41) corresponding to the first limiting groove (11) and communicating with the first limiting groove (11) after assembly; the switch mechanism also comprises a key (5) provided on the knob (4); A limiting column (6) and a first return spring (7) are provided in the first limiting groove (11); the limiting column (6) is clamped between the first limiting groove (11) and the second limiting groove (41) under the push of the elastic force of the first return spring (7), so that the knob (4) is in a locked state and cannot be rotated; when the button (5) is pressed, the button (5) drives the limiting column (6) to exit the second limiting groove (41), so that the knob (4) is in an unlocked state and can be rotated; a second return spring (8) is provided in the knob (4) for driving the button (5) to return to its original position.

2. The door lock with a rotary switch button according to claim 1, characterized in that A mounting portion (12) is formed on a side of the housing (1) facing the knob (4) in a protruding manner, and a first through hole (13) is provided in the mounting portion (12). The knob (4) is provided with a connecting portion (42) that can be inserted into the first through hole (13), and the connecting portion (42) is fixedly connected to the puller (3) after passing through the first through hole (13); the first limiting groove (11) is provided on the mounting portion (12) and is located outside the first through hole (13), and the second limiting groove (41) is provided on the outside of the connecting portion (42) corresponding to the first limiting groove (11).

3. The door lock with a rotary switch button according to claim 2, characterized in that The switch mechanism further comprises a push column (9) arranged in the second limiting groove (41); the button (5) is arranged on the outside of the knob (4); the pressing direction of the button (5) is perpendicular to the moving direction of the limiting column (6); a pressing notch (43) vertically connected to the second limiting groove (41) is further arranged in the knob (4); a side of the push column (9) facing away from the limiting column (6) is provided with an inclined surface (91) facing the button (5); the button (5) has a pressing notch (43) that can pass through the pressing notch (43) and abut against the inclined surface ( The push portion (51) is mounted on the push portion (91), and the second return spring (8) is sleeved on the push portion (51); when the button (5) is pressed, the push portion (51) pushes the push column (9) to move toward the limiting column (6) via the inclined surface (91), so that the limiting column (6) exits the second limiting groove (41); the side of the limiting column (6) facing the knob (4) is a ball head, and when the end surface of the push column (9) facing the limiting column (6) is flush with the notch of the second limiting groove (41), the knob (4) is in an unlocked state.

4. The door lock with a rotary switch button according to claim 3, characterized in that The knob (4) is mainly composed of a knob shell (401) and a knob cover (402) covering the front end of the knob shell (401); the second limiting groove (41), the connecting portion (42) and the pressing notch (43) are respectively arranged on the knob shell (401); the outer side of the knob shell (401) is provided with a key notch (403) for allowing the key (5) to slide up and down; the outer side of the key (5) is provided with a limiting block (52) protruding outwards, and after assembly, the limiting block (52) abuts against the inner edge of the key notch (403).

5. A door lock with a rotary switch button according to claim 4, characterized in that A threaded hole (44) is provided in the connection portion (42), and the connection portion (42) and the puller (3) are threadedly connected via a screw (100).

6. The door lock with a rotary switch button according to claim 4, characterized in that The front end of the connecting portion (42) is protruded outwardly to form an insertion key (45), and the puller (3) is provided with a slot (31) matching the insertion key (45).

7. The door lock with a rotary switch button according to claim 4, characterized in that One end of the puller (3) is provided with a first toggle portion (32) for toggle the lock tongue (2), and the other end of the puller (3) is symmetrically provided with a second toggle portion (33) adapted to the first toggle portion (32); the reset mechanism comprises a limiter (10) hinged in the housing (1), one end of the limiter (10) abuts against the outside of the puller (3), the other end of the limiter (10) is provided with a first spring column (101), and a second spring column (102) is further provided in the housing (1); the reset mechanism also comprises a return spring (103), one end of the return spring (103) is sleeved on the first spring column (101), and the other end of the return spring (103) is sleeved on the second spring column (102).

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