Door lock capable of preventing mistaken opening

Abstract

The utility model relates to a mistaken opening prevention door lock which comprises a door lock panel, a lock rod, a holding assembly and a transmission piece, the holding assembly can rotate relative to the door lock panel, the lock rod is connected with the transmission piece, the transmission piece is rotated to drive the lock rod to rotate, and the mistaken opening prevention door lock further comprises a clutch assembly and a switching assembly. The clutch assembly can be driven to rotate around a rotating shaft of the holding assembly by rotating the holding assembly, the clutch assembly can axially move along the rotating shaft of the holding assembly under the action of external force, and when the clutch assembly is in an initial state, the clutch assembly and the transmission part are arranged at an interval; when the clutch assembly is in the driving state, the clutch assembly is connected with the transmission piece. The switching assembly is selectively kept at a first position or a second position relative to the holding assembly; when the switching assembly is located at the first position, the clutch assembly can be switched between an initial state and a driving state; and when the switching assembly is located at the second position, the switching assembly is kept connected with the clutch assembly, and the clutch assembly is always in the driving state.

Description

Technical Field

[0001] This utility model relates to the field of door lock devices, and in particular to a door lock that prevents accidental opening. Background Technology

[0002] In the field of door lock devices, some door lock products already have an anti-accidental opening function. Users cannot open the door by simply turning the handle from inside; for example, they need to press the clutch component while simultaneously turning the handle to drive the lock rod, thus opening the door and preventing young children or pets from easily opening it by mistake. However, the anti-accidental opening function of these handles is always in the active state and cannot be flexibly switched according to actual needs.

[0003] In real-world applications, the users and environments of door locks can change dynamically. Because existing anti-accidental opening door locks lack a mechanism to switch the working state of the inside handle, their flexibility during use is poor, limiting their applicability. Utility Model Content

[0004] In view of this, the present invention provides a door lock to prevent accidental opening, which solves the problem that the existing door locks for preventing accidental opening lack a switching mechanism.

[0005] To achieve one, some, or all of the above objectives, or other objectives, this utility model proposes: an anti-accidental opening door lock, comprising a door lock panel, a lock rod, a grip assembly, and a transmission component. The grip assembly is rotatable relative to the door lock panel. The lock rod is connected to the transmission component, and rotating the transmission component drives the lock rod to rotate. The anti-accidental opening door lock further includes: a clutch assembly movably mounted on the grip assembly. Rotating the grip assembly drives the clutch assembly to rotate around the rotation axis of the grip assembly. Under the action of an external force, the clutch assembly can move axially along the rotation axis of the grip assembly, giving the clutch assembly an initial state and a driving state. When the clutch assembly is in the initial state, the clutch assembly and the transmission component are spaced apart. When the clutch assembly is in the driving state, the clutch assembly is connected to the transmission component. A switching assembly has at least a first position and a second position relative to the grip assembly, and the switching assembly can selectively remain in the first position or the second position. When the switching assembly is in the first position, the clutch assembly can switch between the initial state and the driving state. When the switching assembly is in the second position, the switching assembly remains connected to the clutch assembly, and the clutch assembly is always in the driving state.

[0006] In some embodiments, the switching component is closer to the drive member when it is in the second position than when it is in the first position.

[0007] In some embodiments, the clutch assembly has a first abutment surface facing away from the transmission member, and the switching assembly has a second abutment surface facing the first abutment surface; when the switching assembly is in a first position and the clutch assembly is in a driving state, the first abutment surface and the second abutment surface are spaced apart; when the switching assembly is in a second position, the first abutment surface and the second abutment surface remain in contact; the switching assembly includes an abutment member and an operating member, the abutment member is disposed within the grip assembly, and the second abutment surface is disposed on the abutment member, the grip assembly has a first hole, the operating member is connected to the abutment member and is at least partially exposed outside the grip assembly from the first hole; the operating member extends in a direction perpendicular to the rotation axis of the grip assembly, and the operating member and the abutment member are detachably connected, or the operating member and the abutment member are integrally formed.

[0008] In some embodiments, the clutch assembly includes: a clutch shaft that is axially movable along the rotation axis of the grip assembly to connect or disconnect with the transmission member; and a connector on which the clutch shaft is slidably connected, and which is circumferentially locked to the clutch shaft. Rotating the grip assembly can cause the connector and the clutch shaft to rotate together around the rotation axis of the grip assembly. When the switching assembly is in the second position, the connector is circumferentially locked to the transmission member.

[0009] In some embodiments, the anti-accidental opening door lock further includes a first connecting structure, a second connecting structure, and a third connecting structure. The first connecting structure and the second connecting structure are both disposed on one of the switching component or the gripping component, and the third connecting structure is disposed on the other of the switching component or the gripping component. The third connecting structure can be selectively connected to either the first connecting structure or the second connecting structure. When the third connecting structure is connected to the first connecting structure, the switching component is in a first position. When the third connecting structure is connected to the second connecting structure, the switching component is in a second position. The first connecting structure and the second connecting structure are both slots, and the third connecting structure is a latch. The latch can be selectively engaged with either slot.

[0010] In some embodiments, the gripping component includes a handle and a mounting member. The handle has a mounting cavity, the mounting member is fixedly disposed in the mounting cavity, the clutch component and the switching component are both mounted on the mounting member, and the first connecting structure and the second connecting structure are both disposed on the switching component, and the third connecting structure is disposed on the mounting member.

[0011] In some embodiments, the switching component includes an abutment and an operating member. The abutment is disposed within the grip component, and a second abutment surface is disposed on the abutment. The grip component has a first hole, and the operating member is connected to the abutment and is at least partially exposed outside the grip component from the first hole. The operating member extends in a direction perpendicular to the rotation axis of the grip component. The operating member and the abutment are detachably connected, or the operating member and the abutment are integrally formed.

[0012] In some embodiments, the grip assembly has a mounting cavity, and the clutch assembly includes: a clutch shaft movably disposed within the mounting cavity, with a first abutment surface disposed on the clutch shaft; a drive member that can abut or separate from the clutch shaft, and both can move axially along the rotation axis of the grip assembly, with the drive member at least partially protruding from the mounting cavity outside the grip assembly; and a first reset member located within the mounting cavity and connecting the clutch shaft and the grip assembly, configured to drive the clutch shaft to move axially away from the transmission member; when the switching assembly is in a first position, the drive member can abut against the clutch shaft under external force, connecting the clutch shaft to the transmission member; after the external force is released, the first reset member drives the clutch shaft to separate from the transmission member; when the switching assembly is in a second position, the clutch shaft is always connected to the transmission member; the clutch assembly further includes a second reset member located within the mounting cavity and connecting the drive member and the grip assembly, configured to drive the drive member to move outward from the grip assembly.

[0013] In some embodiments, the transmission component has a polygonal shaft hole, and the clutch shaft is at least partially a polygonal cylinder. The shape and size of the polygonal shaft hole are adapted to the polygonal cylinder, so that the polygonal cylinder can be inserted into the polygonal shaft hole and the transmission component and the clutch shaft rotate synchronously. The transmission component includes a first end and a second end. The first end is connected to the locking rod, and the polygonal shaft hole is opened at the second end. The gripping assembly has a first channel, which communicates with the mounting cavity. The shape and size of the first channel are matched with the polygonal shaft hole. The polygonal cylinder is slidably disposed in the first channel, and the driving component can drive the polygonal cylinder to move from the first channel to the polygonal shaft hole and insert the polygonal cylinder into the polygonal shaft hole.

[0014] In some embodiments, the grip assembly includes a handle, a middle member, and a fixing member. A mounting cavity is formed on the handle. The middle member is rotatably mounted on a door lock panel. A first channel is formed on the middle member, and a second channel communicating with the first channel is also provided on the middle member. A second end of a transmission member extends into the second channel. The fixing member is fixedly mounted on the handle and can be selectively connected to or separated from the middle member. When the fixing member is separated from the middle member, the handle can rotate relative to the middle member and the clutch shaft. The grip assembly also includes a fixing bolt, which is threadedly connected to the fixing member and securely fastened. A fixing bolt passes through the fixing member and can be connected to the intermediate member to circumferentially lock or unlock the fixing member and the intermediate member; the intermediate member includes at least one positioning groove into which the fixing bolt can extend, and when the fixing bolt extends into the positioning groove, the fixing member and the intermediate member are circumferentially locked; the handle is provided with a gripping part, and the number of positioning grooves is three, and when the fixing bolt extends into the positioning groove, the gripping part is horizontally or vertically positioned; the door lock panel is provided with a first limiting boss, and the outer wall of the gripping component is provided with at least one second limiting boss, and the first limiting boss abuts against the second limiting boss.

[0015] Implementing this utility model embodiment will have the following beneficial effects: After adopting the above-mentioned anti-accidental opening door lock, the user can switch the working state of the door lock according to actual needs. By adjusting the position of the clutch shaft through the switching component, in the scenario where anti-accidental opening is required, the switching component can be switched to the first position. At this time, the user needs to press the drive component and turn the handle at the same time to drive the lock rod to unlock. In the scenario where anti-accidental opening is not required, the switching component can be switched to the second position. At this time, the user only needs to turn the handle directly to drive the lock rod to rotate and unlock. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment.

[0018] Figure 2 One of the diagrams illustrating an explosion to prevent accidental unlocking of the door;

[0019] Figure 3 One of the cross-sectional views to prevent accidental unlocking of the door lock; the switching component is in the first position at this time.

[0020] Figure 4 The second sectional view to prevent accidental unlocking of the door lock shows the switching component in the second position.

[0021] Figure 5 The second diagram illustrating an explosion to prevent accidental unlocking of the door lock;

[0022] Figure 6 An exploded view of the switching components and mounting parts;

[0023] Figure 7 The third diagram illustrating an explosion to prevent accidental unlocking of the door lock;

[0024] Figure 8 for Figure 7 An enlarged diagram in Part A;

[0025] Figure 9 for Figure 8 Enlarged diagram in Part B;

[0026] Figure 10 This is a schematic diagram of the clutch shaft structure;

[0027] Figure 11 Schematic diagram of the clutch assembly;

[0028] Figure 12 This is a structural diagram of the middleware;

[0029] Figure 13 This is a schematic diagram showing the handle grip in a horizontal position.

[0030] Figure 14 This is a schematic diagram of the assembly of the connecting components;

[0031] Figure 15 for Figure 14 Enlarged diagram in section C;

[0032] Figure 16 Third cross-sectional view to prevent accidental unlocking;

[0033] Figure 17 This is a schematic diagram of the assembly of the exterior door handle and the interior door handle;

[0034] Figure 18 A schematic diagram of the structure for installing the switching component on the door lock panel;

[0035] Figure 19 for Figure 18 Enlarged diagram in section D.

[0036] in:

[0037] 10. Inner door lock; 20. Outer door lock; 1. Door lock panel; 11. First limiting boss; 2. Lock rod; 3. Grip assembly; 30. Mounting cavity; 31. Handle; 311. First hole; 312. Second hole; 313. Third hole; 314. Grip part; 32. Mounting component; 321. First chamber; 322. Second chamber; 323. Third chamber; 33. Intermediate component; 331. Second limiting boss; 332. Positioning groove; 333. First channel; 334. Second channel; 34. Fixing component; 341. Fourth hole; 35. Third connecting structure; 36. Fixing bolt; 37. Rotating shaft; 4. Transmission component; 41. First end; 42. Second end; 421. Polygonal shaft hole; 5. Clutch assembly; 51. Clutch shaft; 510. Working part; 511. Polygonal column; 512. First abutment surface; 52. Driving component; 521. Head; 522. Rod; 53. First reset component; 54. Second reset component; 55. Connecting component; 6. Switching assembly; 61. Abutment component; 611. Second abutment surface; 62. Operating component; 63. First connecting structure; 64. Second connecting structure; 65. Switch; 66. Driving device; 67. Ejector pin; 7. Locking tongue. Detailed Implementation

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0039] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] See appendix Figure 1 Appendix Figure 2 and attached Figure 16 This utility model proposes an anti-accidental unlocking door lock, including a door lock panel 1, a lock rod 2, a grip assembly 3, and a transmission component 4. The grip assembly 3 is rotatable relative to the door lock panel 1, and the lock rod 2 is connected to the transmission component 4. Rotation of the transmission component 4 can drive the lock rod 2 to unlock. For details on the unlocking mechanism, please refer to the appendix. Figure 17 The anti-accidental opening door lock also includes a latch 7. In one embodiment, the anti-accidental opening door lock can be used as an inner door lock 10, with an outer door lock 20 installed on the opposite side of the inner door lock 10. The inner door lock 10 and the outer door lock 20 are connected to the same locking rod 2. The locking rod 2 is connected to the latch 7 via a transmission mechanism. The rotation of the locking rod 2 causes the latch 7 to extend outside or retract inside the door, thereby unlocking or locking. (See attached image) Figure 13 This diagram illustrates the installation of a door lock to prevent accidental opening, where the X direction is horizontal and the Y direction is vertical.

[0041] The anti-accidental opening door lock also includes a clutch assembly 5. The grip assembly 3 has a mounting cavity 30, and the clutch assembly 5 is housed within the mounting cavity 30. When the grip assembly 3 is rotated, the clutch assembly 5 can be driven by the grip assembly 3 to rotate synchronously around the rotation axis 37 of the grip assembly 3. Simultaneously, the clutch assembly 5 can also be driven by an external force to move axially along the rotation axis 37 of the grip assembly 3, thus giving the clutch assembly 5 an initial state and a driving state. ， When the clutch assembly 5 is in the initial state, the clutch assembly 5 and the transmission component 4 are spaced apart, and rotating the grip assembly 3 cannot drive the locking rod 2 to unlock; when the clutch assembly 5 is in the driving state, the clutch assembly 5 is connected to the transmission component 4, and rotating the grip assembly 3 can drive the locking rod 2 to unlock.

[0042] The clutch assembly 5 can switch from an initial state to a driving state under the action of an external force, which is usually the user's operation of the clutch assembly 5, such as pressing the clutch assembly 5, causing the clutch assembly 5 to move towards the transmission component 4 and eventually connect with the transmission component 4. When the clutch assembly 5 is connected to the transmission component 4, that is, when the clutch assembly 5 is in the driving state, rotating the grip assembly 3 will cause the grip assembly 3 and the clutch assembly 5 installed in the mounting cavity 30 to rotate synchronously. The transmission component 4, through the rotation of the clutch assembly 5, can drive the locking lever 2 to unlock.

[0043] The clutch assembly 5 can return from the driving state to the initial state under the action of external force, or the clutch assembly 5 itself is elastic and can return from the driving state to the initial state under the action of elastic force. When the clutch assembly 5 returns from the driving state to the initial state, the clutch assembly 5 disengages from the transmission component 4. At this time, there is no connection between the clutch assembly 5 and the transmission component 4, and the rotation of the gripping component 3 cannot drive the rotation of the transmission component 4 through the clutch assembly 5. See Appendix Figure 3 and attached Figure 4To enable the anti-accidental opening function and allow users to use the anti-accidental opening lock as a regular lock according to their needs, the anti-accidental opening lock also includes a switching component 6. The switching component 6 has at least a first position and a second position relative to the grip component 3, and can selectively remain in either the first or second position. When the switching component 6 is in the first position, the clutch component 5 can switch between an initial state and an active state. The user needs to apply external force to move the clutch component 5, thus achieving the anti-accidental opening function by consciously applying external force to the clutch component 5. When the switching component 6 is in the second position, the switching component 6 remains connected to the clutch component 5, and the clutch component 5 is always in the active state. At this time, the anti-accidental opening function of the lock is disabled. That is, when the switching component 6 is switched to the second position, the anti-accidental opening lock is used as a regular lock. The user does not need to apply external force to the clutch component 5; they can simply rotate the grip component 3 to open the door, or even if external force is applied to the clutch component 5, its state cannot be changed. In one embodiment, the switching component 6 is mounted on the grip component 3, and at least partially protrudes from the outside of the grip component 3. The user can switch the switching component 6 between a first position and a second position by operating this exposed portion. A portion of the clutch component 5 is located between the switching component 6 and the transmission member 4; this portion is the working part 510, which is connected to the transmission member 4. The state switching of the clutch component 5 is reflected in the change of position of the working part 510. When the switching component 6 is in the second position, it is closer to the transmission member 4 than when it is in the first position. That is, when the switching component 6 is in the first position, it is farther from the transmission member 4, providing space for the working part 510 to change position, thereby achieving the state switching of the clutch component 5. When the switching component 6 is in the second position, the space between the switching component 6 and the transmission member 4 is insufficient for the working part 510 to move, meaning the working part 510 cannot change position, and the clutch component can only be in the driving state.

[0044] See appendix Figures 7 to 9 In some embodiments, the clutch assembly 5 has a first abutment surface 512 on its working part 510, which is disposed opposite to the transmission member 4; the switching assembly 6 has a second abutment surface 611, which is disposed facing the first abutment surface 512. When the switching assembly 6 is in the first position and the clutch assembly 5 is in the initial state, the second abutment surface 611 abuts against the first abutment surface 512; when the switching assembly 6 is in the first position and the clutch assembly 5 is in the driving state, the working part 510 is connected to the transmission member 4 under the action of external force, so there is a gap between the first abutment surface 512 and the second abutment surface 611. When the switching assembly 6 is switched to the second position, and the first abutment surface 512 and the second abutment surface 611 remain in contact, the user can directly drive the transmission member 4 without applying external force to the clutch assembly 5.

[0045] In other embodiments, see appendix. Figure 18 and attached Figure 19 The switching assembly 6 can also be installed on the door lock panel 1. The clutch assembly 5 includes a clutch shaft 51 and a connecting member 55. The clutch shaft 51 and the connecting member 55 are slidably connected, and the connecting member 55 and the clutch shaft 51 are circumferentially locked. Rotating the grip assembly 3 can drive the connecting member 55 and the clutch shaft 51 to rotate together around the rotation axis 37 of the grip assembly 3. The switching assembly 6 includes a push pin 67. The connecting member 55 and the transmission member 4 can be connected through the push pin 67. At this time, the state switching of the clutch assembly 5 is reflected in the change of the position of the push pin 67, rather than the change of the position of the working part 510 mentioned above. When the switching component 6 is in the first position, the ejector pin 67 is only inserted into the connector 55 and is not connected to the transmission component 4. That is, when the grip component 3 is rotated directly, the transmission component 4 and the locking rod 2 cannot rotate to open the door. At this time, an external force is required to act on the clutch component 5, so that the clutch shaft 51 moves axially along the rotation shaft 37 of the grip component 3 to connect or disconnect with the transmission component 4, realizing the switching of the clutch component 5 between the initial state and the driving state. When the switching component 6 is in the second position, the ejector pin 67 passes through the connector 55 and is inserted into the transmission component 4. In this way, the connector 55 and the transmission component 4 can achieve circumferential locking, so that the clutch component 5 is always in the driving state. At this time, when the grip component 3 is rotated directly, the clutch shaft 51, the connector 55, the transmission component 4, and the locking rod 2 can rotate together to open the door. In one embodiment, the switching component 6 is at least partially exposed outside the door lock panel 1. The user can directly drive the ejector pin 67 to switch between the first and second positions by operating the exposed part; or, in other embodiments, please continue to refer to the appendix. Figure 19 The switching component 6 also includes a switch 65 and a drive device 66. The switch 65 is at least partially exposed outside the door lock panel 1, and the drive device 66 is at least partially installed inside the door lock panel 1. The switch 65 can be electrically connected to the drive device 66, and the drive device 66 is kinetically connected to the pin 67. When the user presses or toggles the switch 65, the drive device 66 can drive the pin 67 to change position.

[0046] In some embodiments, the anti-accidental opening door lock further includes a first connecting structure 63, a second connecting structure 64, and a third connecting structure 35. The first connecting structure 63 and the second connecting structure 64 are both disposed on one of the switching component 6 or the gripping component 3, and the third connecting structure 35 is disposed on the other of the switching component 6 or the gripping component 3. The third connecting structure 35 can be selectively connected to either the first connecting structure 63 or the second connecting structure 64. When the third connecting structure 35 is connected to the first connecting structure 63, the switching component 6 is in a first position. When the third connecting structure 35 is connected to the second connecting structure 64, the switching component 6 is in a second position.

[0047] See appendix Figure 5In one embodiment, the connection between the first connecting structure 63 and the third connecting structure 35 can be achieved through a snap-fit ​​engagement, as can the connection between the second connecting structure 64 and the third connecting structure 35. The third connecting structure 35 is a snap-fit ​​formed on the inner wall of the gripping component 3. The first connecting structure 63 and the second connecting structure 64 are both formed on the outer wall of the switching component 6. The first connecting structure 63 and the second connecting structure 64 are two slots distributed along the axial direction of the rotation axis 37 of the gripping component 3. The snap-fit ​​can selectively engage with either of the two slots to keep the switching component 6 in a first position or a second position. In another embodiment, the first connecting structure 63 and the second connecting structure 64 are disposed on the inner wall of the gripping component 3, and the third connecting structure is disposed on the outer wall of the switching component 6. That is, the positions of the snap-fit ​​and the slots can be interchanged, achieving the same connection function.

[0048] Besides the snap-fit ​​connection, the connection between the switching component 6 and the gripping component 3 can also be achieved through other methods, including threaded connection and magnetic connection. For example, when using a threaded connection, the first connecting structure 63 and the second connecting structure 64 are two external threads, which are axially spaced on the switching component 6 along the rotation axis 37. The third connecting structure 35 is an internal thread that meshes with the first connecting structure 63 and the second connecting structure 64, and is provided on the gripping component 3. When the switching component 6 rotates relative to the gripping component 3, the switching component 6 can switch between the first position and the second position. For example, when using a magnetic connection, the first connecting structure 63, the second connecting structure 64, and the third connecting structure 35 can all be magnets. The third connecting structure 35 is attracted to the first connecting structure 63 or the second connecting structure 64 by magnetic attraction.

[0049] For information on the structure of switching component 6, please refer to the appendix. Figure 6 In one embodiment, the switching assembly 6 includes an abutment 61 and an operating member 62. The abutment 61 is disposed within the mounting cavity 30, and a second abutment surface 611 is formed on the abutment 61 for opposing or abutting against the first abutment surface 512 on the clutch assembly 5. The grip assembly 3 has a first hole 311, and the operating member 62 is fixedly connected to the abutment 61, with at least a portion extending from the first hole 311, exposing the operating member 62 to the outside of the grip assembly 3. By gripping and operating the operating member 62, the user can drive the abutment 61 to switch between a first position and a second position, thereby realizing the switching control of the switching assembly 6. In this embodiment, the first hole 311 is a strip-shaped hole extending along the axial direction of the rotation shaft 37, which can provide the necessary movement space for the operating member 62. In addition, the operating member 62 and the abutment 61 can be integrally formed, or they can be connected together by screws, snaps, adhesives, etc., for processing and assembly.

[0050] In some embodiments, the operating member 62 extends in a direction perpendicular to the rotation axis 37 of the grip assembly 3, and the operating member 62 passes through the first hole 311 to protrude outside the grip assembly 3. That is, the operating member 62 is perpendicular to the direction in which the user applies external force to the clutch assembly 5, so that when switching, the user can clearly distinguish the functions of the clutch assembly 5 and the switching assembly 6, ensuring the operational independence of the clutch assembly 5 and the switching assembly 6 and reducing the risk of misoperation.

[0051] For the structure of clutch assembly 5, please refer to the appendix. Figure 11 In some embodiments, the clutch assembly 5 includes a clutch shaft 51, a drive member 52, and a first reset member 53. The clutch shaft 51 is slidably disposed within the mounting cavity 30, a working part 510 is disposed on the clutch shaft 51, and a first abutment surface 512 is disposed on the clutch shaft 51. The drive member 52 includes a head 521 and a rod 522. The grip assembly 3 has a second hole 312, with at least a portion of the head 521 passing through the second hole 312 and exposed outside the grip assembly 3. When the switching assembly 6 is in the first position, the user applies external force to press the head 521, allowing the rod 522 of the drive member 52 to abut against the clutch shaft 51. At this time, both the drive member 52 and the clutch shaft 51 can slide along the rotation axis 37 of the grip assembly 3 towards the transmission member 4, connecting the clutch shaft 51 to the transmission member 4. The first reset member 53 is located within the mounting cavity 30 and connects the clutch shaft 51 and the grip assembly 3. The first reset member 53 is configured to drive the clutch shaft 51 away from the transmission member 4. After the user releases the external force applied to the head 521, the first reset member 53 drives the clutch shaft 51 to separate from the transmission member 4, and the clutch shaft 51 returns to its initial state. When the switching assembly 6 is in the second position, the clutch shaft 51 remains connected to the transmission member 4, and the first reset member 53 remains in a state of storing elastic potential energy. The first reset member 53 drives the clutch shaft 51 to reset when the switching assembly 6 returns to the first position. It should be noted that the clutch assembly 5 can be driven towards the transmission member 4 in various ways. For example, the external force can not only come from the user's direct pressing operation on the clutch assembly 5, but can also be applied to the clutch assembly 5 through threaded connections, sliding connections, or other methods. Any operation that enables the clutch assembly 5 to move towards the transmission member 4 is considered an operation that transmits external force.

[0052] In some embodiments, the clutch shaft 51 and the drive member 52 are independent and separable, and the clutch assembly 5 further includes a second reset member 54. The first reset member 53 and the second reset member 54 act on different objects; the first reset member 53 is used to reset the clutch shaft 51, and the second reset member 54 is used to reset the drive member 52. Specifically, the second reset member 54 is located within the mounting cavity 30 and connects the drive member 52 and the grip assembly 3, and is configured to drive the drive member 52 outward from the grip assembly 3. When the user applies external force to make the drive member 52 contact the clutch shaft 51, the second reset member 54 is compressed. When the external force is released, the second reset member 54, through elastic action, drives the drive member 52 back to its original position. When the switching assembly 6 is in the second position, after pressing the drive member 52, the drive member 52 cannot be reset by the elastic force of the first reset member 53, so the second reset member 54 is used to drive the head 521 of the drive member 52 to re-extend out of the second hole 312. In one embodiment, the first reset member 53 and / or the second reset member 54 are compression springs.

[0053] In other embodiments, the clutch assembly 5 may not include a separately configured drive component 52. That is, the drive component 52 and the clutch shaft 51 may be connected together by bolts, adhesives, or other means, or the drive component 52 and the clutch shaft 51 may be integrally formed into a single component.

[0054] Please refer to the appendix. Figure 2 and attached Figure 11In some embodiments, the grip assembly 3 includes a handle 31 and a mounting member 32. A mounting cavity 30 is disposed on the handle 31, and the mounting member 32 is fixedly disposed within the mounting cavity 30. The mounting member 32 is used to fix the clutch assembly 5 and the switching assembly 6 within the mounting cavity 30 of the handle 31. On one hand, the handle 31 provides a grip portion 314 for the user, allowing the user to rotate, press, or perform other operations on the handle 31 through the grip portion 314. The rotation of the handle 31 can drive the mounting member 32, the clutch assembly 5, and the switching assembly 6 installed inside it to rotate together. On the other hand, the mounting cavity 30 is formed on the handle 31, which can protect the internal structure and prevent dust and foreign objects from entering the mounting cavity 30. In one embodiment, the mounting member 32 has a first chamber 321 for accommodating the switching assembly 6, a third connecting structure 35 is formed on the cavity wall of the chamber, and the first connecting structure 63 and the second connecting structure 64 are both disposed on the outer wall of the switching assembly 6. The mounting member 32 also has a second chamber 322 for accommodating the first reset member 53 and a third chamber 323 for accommodating the second reset member 54, and the second chamber 322 and the third chamber 323 are connected. The rod portion 522 of the driving member 52 extends from the third chamber 323 into the second chamber 322, and the clutch shaft 51 is at least partially located in the second chamber 322 and connected to the first reset member 53. When the user presses the head 521 of the driving member 52, the rod portion 522 of the driving member 52 and the clutch shaft 51 abut in the second chamber 322 and move together toward the transmission member 4. After the user removes the external force, under the action of the first reset member 53 and the second reset member 54, the driving member 52 and the clutch shaft 51 are both reset and separated from each other in the second chamber 322.

[0055] For the structure of clutch shaft 51, please refer to the appendix. Figure 3 Appendix Figure 4 and attached Figure 10 In some embodiments, the transmission component 4 has a polygonal shaft hole 421, and the working part 510 is a polygonal cylinder 511, with the shape and size of the polygonal shaft hole 421 matching the polygonal cylinder 511. Compared to the traditional combination of a circular shaft hole and a circular cylinder, the polygonal shaft hole 421 and the polygonal cylinder 511 can effectively prevent relative rotation between the clutch shaft 51 and the transmission component 4, ensuring that the clutch shaft 51 and the transmission component 4 can rotate synchronously after connection. The transmission component 4 includes a first end 41 and a second end 42. The first end 41 is connected to the locking rod 2, and the second end 42 is provided with the polygonal shaft hole 421. The polygonal cylinder 511 of the clutch shaft 51 can be connected to the polygonal shaft hole 421 at the second end 42 of the transmission component 4 to rotate the locking rod 2 to unlock.

[0056] To achieve synchronous rotation between the clutch shaft 51 and the grip assembly 3, the grip assembly 3 has a first channel 333, which communicates with the mounting cavity 30. The shape and size of the first channel 333 match the polygonal shaft hole 421. When the clutch shaft 51 is in its initial state, at least a portion of the polygonal column 511 is inserted into the first channel 333, forming a circumferential lock with the first channel 333. That is, the clutch shaft 51 forms a circumferential lock with the grip assembly 3 through the first channel 333, allowing the clutch shaft 51 to rotate with the grip assembly 3. In addition, in one embodiment, the shape and size of the first channel 333 match the polygonal shaft hole 421 of the transmission member 4. When the drive member 52 is subjected to external force, the polygonal column 511 can slide along the first channel 333 and be inserted into the polygonal shaft hole 421 of the transmission member 4, thus connecting the clutch shaft 51 and the transmission member 4.

[0057] In one embodiment, the grip assembly 3 includes an intermediate component 33. It should be noted that the intermediate component 33 and the connector 55 can be represented as the same structural member; when the switching assembly 6 is mounted on the grip assembly 3, this structural member serves as the intermediate component 33; when the switching assembly 6 is mounted on the door lock panel 1, this structural member serves as the connector 55. The following explains the installation of the switching assembly 6 on the grip assembly 3: See Appendix Figure 2 and attached Figure 3 The grip assembly 3 includes a handle 31, a middle member 33, and a fixing member 34. The grip portion 314 is disposed on the handle 31, and a mounting cavity 30 is formed on the handle 31. The middle member 33 is rotatably mounted on the door lock panel 1. The fixing member 34 is fixedly connected to the handle 31 and can be selectively connected to or separated from the middle member 33. When the fixing member 34 is separated from the middle member 33, the handle 31 can rotate relative to the middle member 33 and the clutch shaft 51 to change the initial position of the grip portion 314. Specifically, the fixing member 34 is fixedly connected to the handle 31 by bolts. Thus, when the fixing member 34 is connected to the middle member 33, the handle 31, fixing member 34, and middle member 33 can be considered as a whole and can rotate together around the rotation axis 37 of the grip assembly 3; when the fixing member 34 is separated from the middle member 33, the handle 31 and fixing member 34 can be considered as a whole, and the handle 31 and fixing member 34 can rotate relative to the middle member 33. After the fixing part 34 is separated from the intermediate part 33, the user can remove the handle 31 and the components inside the handle 31 from the door lock panel 1, while the intermediate part 33 remains on the door lock panel 1. There is no need to remove the door lock panel 1, which facilitates installation and maintenance.

[0058] The intermediate component 33 is provided with a second channel 334. Both the first channel 333 and the second channel 334 are formed on the intermediate component 33 and are connected. The second end 42 of the transmission component 4 extends into the second channel 334. In this state, the gripping assembly 3 can rotate freely relative to the second end 42 of the transmission component 4. In one embodiment, the transmission component 4 has a circular outer wall formed at its second end 42, and the second channel 334 is also configured as a circular channel with a shape and size adapted to the circular outer wall. This allows the gripping assembly 3 to rotate relative to the transmission component 4 even when the clutch shaft 51 is not connected to the transmission component 4. In this way, the anti-accidental opening door lock can prevent the door from being opened due to user misoperation.

[0059] See appendix Figure 2 To be continued Figure 5 In one embodiment, the grip assembly 3 further includes a fixing bolt 36. Specifically, the handle 31 has a third hole 313, and the fixing member 34 has a fourth hole 341. The fixing bolt 36 passes through the third hole 313 and is threadedly connected to the fixing member 34 in the fourth hole 341, and finally connected to the intermediate member 33. In this way, the intermediate member 33 and the fixing member 34 can be circumferentially locked by the fixing bolt 36. Tightening the fixing bolt 36 in the reverse direction can release the connection between the fixing member 34 and the intermediate member 33, at which point the circumferential lock is released. The fixing bolt 36 and the intermediate member 33 can be connected by threads, or the fixing bolt 36 can directly abut against the surface of the intermediate member 33, achieving circumferential locking through clamping force. For example, the outer wall of the intermediate member 33 is provided with a positioning groove 332. When the fixing bolt 36 extends into the positioning groove 332 and abuts against the positioning groove 332, the fixing member 34 and the intermediate member 33 are circumferentially locked, and the grip portion 314 is in a preset position.

[0060] In one embodiment, the grip portion 314 is disposed perpendicular to the rotation axis 37 of the grip assembly 3, as shown in the attached figure. Figure 13 The grip portion 314 shown is approximately horizontal to the ground and extends in the X direction. In other embodiments, the grip portion 314 is horizontal to the ground and extends in the opposite direction to the X direction; alternatively, the grip portion 314 may be vertical to the ground and extend in the Y direction. To facilitate user adjustment of the handle 31, allowing the grip portion 314 to be adjusted in multiple directions to adapt to different scenario requirements, in this embodiment, there are three positioning slots 332. The fixing bolt 36 can selectively extend into one of the positioning slots 332, thereby allowing the grip portion 314 to flexibly adjust the orientation of the handle 31 to correspond to the three different extension directions mentioned above.

[0061] To limit the range of rotation of the grip component 3, please refer to the appendix. Figure 14 To be continued Figure 15The door lock panel 1 is provided with a first limiting protrusion 11, and the outer wall of the grip component 3 is provided with at least one second limiting protrusion 331. When the grip component 3 rotates, the first limiting protrusion 11 and the second limiting protrusion 331 abut against each other, thereby limiting the rotation angle of the grip component 3 and avoiding structural damage or functional abnormality caused by excessive rotation. Specifically, in one embodiment, the second limiting protrusion 331 is formed on the outer wall of the intermediate member 33, and there are two second limiting protrusions 331. The two second limiting protrusions 331 are opposite to each other about the rotation axis 37 of the grip component 3, and the first limiting protrusion 11 is installed between the two second limiting protrusions 331. In this way, no matter whether the grip portion 314 of the handle 31 extends in the X direction or in the opposite direction, the grip component 3 cannot continue to rotate after reaching the limit when the user operates it.

[0062] In one embodiment, the anti-accidental opening door lock includes a first torsion spring and a second torsion spring. The first torsion spring is disposed between the transmission member 4 and the door lock panel 1, with one end connected to the transmission member 4 and the other end connected to the door lock panel 1. When the clutch shaft 51 is connected to the transmission member 4, the first torsion spring can drive the transmission member 4 to reset in the opposite direction after the transmission member 4 rotates. The second torsion spring is disposed between the grip assembly 3 and the door lock panel 1, with one end connected to the grip assembly 3 and the other end connected to the door lock panel 1. When the clutch shaft 51 is not connected to the transmission member 4, the second torsion spring can drive the grip assembly 3 to reset in the opposite direction after the grip assembly 3 rotates.

[0063] The above embodiments are merely some, not all, of the embodiments of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of protection of this utility model patent.

Claims

1. A door lock designed to prevent accidental opening, comprising a door lock panel (1), a lock rod (2), a grip assembly (3), and a transmission component (4), wherein the grip assembly (3) is rotatable relative to the door lock panel (1), the lock rod (2) is connected to the transmission component (4), and rotating the transmission component (4) drives the lock rod (2) to rotate, characterized in that, The anti-accidental opening door lock also includes: The clutch assembly (5) is movably mounted on the grip assembly (3). Rotating the grip assembly (3) can drive the clutch assembly (5) to rotate around the rotation axis (37) of the grip assembly (3). Under the action of external force, the clutch assembly (5) can move axially along the rotation axis (37) of the grip assembly (3), so that the clutch assembly (5) has an initial state and a driving state. When the clutch assembly (5) is in the initial state, the clutch assembly (5) and the transmission member (4) are spaced apart. When the clutch assembly (5) is in the driving state, the clutch assembly (5) and the transmission member (4) are connected. A switching component (6) having at least a first position and a second position relative to the gripping component (3), and the switching component (6) being selectively held in the first position or the second position; When the switching component (6) is in the first position, the clutch component (5) can switch between the initial state and the driving state; when the switching component (6) is in the second position, the switching component (6) remains connected to the clutch component (5) and keeps the clutch component (5) in the driving state.

2. The anti-accidental opening door lock according to claim 1, characterized in that, The switching component (6) is closer to the transmission member (4) when it is in the second position than when it is in the first position.

3. The anti-accidental opening door lock according to claim 2, characterized in that, The clutch assembly (5) has a first contact surface (512) facing away from the transmission member (4), and the switching assembly (6) has a second contact surface (611) facing the first contact surface (512). When the switching assembly (6) is in the first position and the clutch assembly (5) is in the driving state, the first contact surface (512) and the second contact surface (611) are spaced apart. When the switching assembly (6) is in the second position, the first contact surface (512) and the second contact surface (611) remain in contact. The switching component (6) includes an abutment (61) and an operating component (62). The abutment (61) is disposed within the grip component (3), and the second abutment surface (611) is disposed on the abutment (61). The grip component (3) has a first hole (311). The operating component (62) is connected to the abutment (61) and is at least partially exposed to the outside of the grip component (3) from the first hole (311). The operating member (62) extends in a direction perpendicular to the rotation axis (37) of the grip assembly (3), and the operating member (62) and the abutment (61) are detachably connected, or the operating member (62) and the abutment (61) are integrally formed.

4. The anti-accidental opening door lock according to claim 1, characterized in that, The clutch assembly (5) includes: The clutch shaft (51) is axially movable along the rotation axis (37) of the grip assembly (3) to connect or disconnect from the transmission member (4); The connecting member (55) and the clutch shaft (51) are slidably connected on the connecting member (55), and the connecting member (55) and the clutch shaft (51) are circumferentially locked. Rotating the grip assembly (3) can drive the connecting member (55) and the clutch shaft (51) to rotate together around the rotation axis (37) of the grip assembly (3). When the switching component (6) is in the second position, the connector (55) is circumferentially locked to the transmission component (4).

5. The anti-accidental opening door lock according to claim 1, characterized in that, It also includes a first connection structure (63), a second connection structure (64) and a third connection structure (35), wherein the first connection structure (63) and the second connection structure (64) are both disposed on one of the switching component (6) or the grip component (3), and the third connection structure (35) is disposed on the other of the switching component (6) or the grip component (3), and the third connection structure (35) can be selectively connected to the first connection structure (63) or the second connection structure (64); When the third connection structure (35) is connected to the first connection structure (63), the switching component (6) is in the first position; when the third connection structure (35) is connected to the second connection structure (64), the switching component (6) is in the second position. The first connecting structure (63) and the second connecting structure (64) are both slots, and the third connecting structure (35) is a buckle, which can be selectively engaged with either of the slots.

6. The anti-accidental opening door lock according to claim 5, characterized in that, The grip assembly (3) includes a handle (31) and a mounting component (32). The handle (31) has a mounting cavity (30). The mounting component (32) is fixedly disposed in the mounting cavity (30). The clutch assembly (5) and the switching assembly (6) are both mounted on the mounting component (32). The first connecting structure (63) and the second connecting structure (64) are both disposed on the switching assembly (6). The third connecting structure (35) is disposed on the mounting component (32).

7. The anti-accidental opening door lock according to claim 3, characterized in that, The switching component (6) includes an abutment (61) and an operating component (62). The abutment (61) is disposed within the grip component (3), and the second abutment surface (611) is disposed on the abutment (61). The grip component (3) has a first hole (311). The operating component (62) is connected to the abutment (61) and is at least partially exposed to the outside of the grip component (3) from the first hole (311). The operating member (62) extends in a direction perpendicular to the rotation axis (37) of the grip assembly (3), and the operating member (62) and the abutment (61) are detachably connected, or the operating member (62) and the abutment (61) are integrally formed.

8. The anti-accidental opening door lock according to claim 3, characterized in that, The gripping assembly (3) has an installation cavity (30), and the clutch assembly (5) includes: A clutch shaft (51) is movably disposed within the mounting cavity (30), and the first abutment surface (512) is disposed on the clutch shaft (51). A drive member (52) is abutting or disengaging from the clutch shaft (51), and both can move axially along the rotation shaft (37) of the grip assembly (3), and the drive member (52) is at least partially exposed outside the grip assembly (3) from the mounting cavity (30); A first reset member (53) is located in the mounting cavity (30) and connects the clutch shaft (51) and the grip assembly (3), and is configured to drive the clutch shaft (51) to move away from the transmission member (4); When the switching component (6) is in the first position, the driving member (52) can abut against the clutch shaft (51) under the action of external force, and connect the clutch shaft (51) to the transmission member (4). After the external force is released, the first reset member (53) drives the clutch shaft (51) to separate from the transmission member (4). When the switching component (6) is in the second position, the clutch shaft (51) is always connected to the transmission member (4). The clutch assembly (5) further includes a second reset member (54), which is located in the mounting cavity (30) and connected to the drive member (52) and the grip assembly (3), and is configured to drive the drive member (52) to move outward from the grip assembly (3).

9. The anti-accidental opening door lock according to claim 8, characterized in that, The transmission component (4) has a polygonal shaft hole (421), and the clutch shaft (51) is at least partially a polygonal cylinder (511). The shape and size of the polygonal shaft hole (421) are adapted to the polygonal cylinder (511), so that the polygonal cylinder (511) can be inserted into the polygonal shaft hole (421) and the transmission component (4) and the clutch shaft (51) rotate synchronously. The transmission component (4) includes a first end (41) and a second end (42). The first end (41) is connected to the locking rod (2), and the polygonal shaft hole (421) is opened at the second end (42). The gripping component (3) has a first channel (333), which is connected to the mounting cavity (30). The shape and size of the first channel (333) are matched with the polygonal shaft hole (421). The polygonal column (511) is slidably disposed in the first channel (333), and the driving component (52) can drive the polygonal column (511) to move from the first channel (333) to the polygonal shaft hole (421) and insert the polygonal column (511) into the polygonal shaft hole (421).

10. The anti-accidental opening door lock according to claim 9, characterized in that, The grip assembly (3) includes a handle (31), an intermediate member (33), and a fixing member (34). The mounting cavity (30) is formed on the handle (31). The intermediate member (33) is rotatably mounted on the door lock panel (1). The first channel (333) is formed on the intermediate member (33). The intermediate member (33) is also provided with a second channel (334) that communicates with the first channel (333). The second end (42) of the transmission member (4) extends into the second channel (334). The fixing member (34) is fixedly mounted on the handle (31) and can be selectively connected to or separated from the intermediate member (33). When the fixing member (34) is separated from the intermediate member (33), the handle (31) can rotate relative to the intermediate member (33) and the clutch shaft (51). The grip assembly (3) further includes a fixing bolt (36), which is threadedly connected to the fixing member (34) and passes through the fixing member (34) and can be connected to the intermediate member (33) to circumferentially lock or unlock the fixing member (34) and the intermediate member (33); the intermediate member (33) includes at least one positioning groove (332), into which the fixing bolt (36) can extend, and when the fixing bolt (36) extends into the positioning groove (332), the fixing member (34) and the intermediate member (33) are circumferentially locked; the handle (31) is provided with a grip portion (314), and the number of positioning grooves (332) is three. When the fixing bolt (36) extends into the positioning groove (332), the grip portion (314) is horizontally or vertically positioned; The door lock panel (1) is provided with a first limiting boss (11), and the outer wall of the grip component (3) is provided with at least one second limiting boss (331), the first limiting boss (11) abutting against the second limiting boss (331).

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