A lock cylinder device to prevent accidental locking

Abstract

This utility model discloses a lock cylinder device to prevent accidental locking. Along the axial direction, it includes a main lock cylinder, a rotating seat, and a deadbolt cylinder. The deadbolt cylinder, along the axial direction, includes a transmission rod, a connecting member, and a deadbolt handle. One end of the connecting member has a receiving groove, and the other end is fixedly connected to the deadbolt handle. One end of the transmission rod is drivenly connected to the rotating seat, and the other end is placed in the receiving groove and connected to the connecting member through a clutch structure. The clutch structure is used to engage or disengage the connecting member and the transmission rod. When the user does not actively press the deadbolt handle, the transmission rod and the connecting member are mechanically separated, and even if the deadbolt handle is rotated, the rotating seat cannot be driven to lock. Only when the user applies axial pressure, causing the connecting member to move, and the connecting rod and transmission rod are drivenly connected, can rotating the deadbolt handle drive it to rotate, thus achieving deadbolt locking. This utility model decomposes the deadbolt operation into two steps—pressing and rotating—through a clutch structure, thereby improving the performance against accidental locking.

Description

Technical Field

[0001] This utility model relates to the field of lock equipment, and in particular to a lock cylinder device for preventing accidental locking. Background Technology

[0002] Existing door locks have a main lock cylinder and a deadbolt cylinder. The deadbolt cylinder allows the door to be locked from the inside without a key, simply by rotating the deadbolt handle. However, the mechanical linkage structure of the deadbolt cylinder in existing technology is simple and prone to accidental activation, causing the door to be unable to open or close normally, resulting in great trouble and inconvenience for users.

[0003] To prevent accidental locking caused by the aforementioned accidental activation, anti-locking mechanisms have been developed in the prior art. For example, Chinese Patent No. CN216142553U discloses an anti-child lock mechanism, which includes a limiting member connected to the deadbolt knob of the door lock; the limiting groove is set on the fixing part of the door lock, and the fixing part of the door lock is connected to the deadbolt knob. While the deadbolt knob is not easily turned immediately, the anti-child lock mechanism is relatively simple, as it prevents the door lock from locking itself by adding a limiting component. However, the overall anti-child lock mechanism has a relatively low ability to prevent accidental locking.

[0004] In view of this, the present invention proposes a lock cylinder device to prevent accidental locking, so as to solve the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the above-mentioned technology, this utility model provides a lock cylinder device that prevents accidental locking, and has a high degree of anti-accidental locking function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lock cylinder device for preventing accidental locking includes, along the axial direction, a main lock cylinder that can be opened with a key, a rotating seat, and a deadbolt cylinder. The main lock cylinder and the deadbolt cylinder are respectively driven to both ends of the rotating seat and are used to drive the rotating seat to rotate. The deadbolt cylinder includes, along the axial direction, a transmission rod, a connecting member, and a deadbolt handle. One end of the connecting member is provided with a receiving groove, and the other end of the connecting member is fixedly connected to the deadbolt handle. One end of the transmission rod is driven to the rotating seat, and the other end of the transmission rod is placed in the receiving groove and connected to the connecting member through a clutch structure. The clutch structure is used to drive the connecting member and the transmission rod to engage or disengage. The clutch structure includes an annular groove arranged circumferentially on the outer surface of the transmission rod, a clutch groove formed by the annular groove extending axially, a clutch pin, and a first spring located in the receiving groove. One end of the clutch pin penetrates radially into the receiving groove, and the connecting member can move axially so that the end of the clutch pin is located in the clutch groove or the annular groove.

[0008] Preferably, the transmission rod has a spring groove at one end facing the connector, and the first spring is placed between the spring groove and the receiving groove.

[0009] Preferably, the clutch groove has a T-shaped structure, including a transmission recess extending circumferentially along the transmission rod, and a connecting recess connecting the transmission recess and the annular groove, wherein the connecting recess extends axially along the transmission rod.

[0010] Preferably, the transmission rod is provided with at least two clutch structures evenly arranged along its circumference.

[0011] Preferably, the lock cylinder device further includes a transmission assembly. The rotating seat has a transmission channel that runs axially through the entire rotating seat. The transmission assembly includes a connecting rod passing through the transmission channel and a second spring sleeved on the connecting rod. One end of the connecting rod is connected to the deadbolt cylinder via a first clutch, and the other end of the connecting rod is connected to the deadbolt cylinder via a second clutch. The transmission channel is equipped with a first transmission component near the first clutch and a second transmission component near the second clutch. Both the first and second transmission components have transmission protrusions on their outer walls, and both the first and second transmission components have through holes at their centers for the connecting rod to pass through. The inner wall of the transmission channel is provided with multiple arc-shaped protrusions for mounting the transmission protrusions. At least two arc-shaped protrusions are provided around the first and second transmission components, and a transmission gap is formed between adjacent arc-shaped protrusions. The width of the transmission gap is adapted to the transmission protrusion. When the anti-locking cylinder is not pushed, the transmission protrusion of the second transmission component is located within the transmission gap, and the transmission protrusion of the first transmission component is mounted on the arc-shaped protrusion. When the anti-locking cylinder is pushed, it moves axially toward the main lock cylinder together with the first clutch component, pushing the transmission protrusion of the first transmission component into the transmission gap. At the same time, the transmission protrusion of the second transmission component is disengaged from the transmission gap by the second spring.

[0012] Preferably, the transmission rod has a first movable groove at one end facing the first transmission member, the transmission rod has a first movable notch communicating with the first movable groove, the first movable notch extends axially, the first clutch member is located in the first movable groove, the outer periphery of the first clutch member has a first movable protrusion, the first movable protrusion is located in the first movable notch, and can move axially within the first movable notch.

[0013] Preferably, the main lock cylinder has a second movable groove at one end facing the second transmission member, and the main lock cylinder has a second movable notch communicating with the second movable groove. The second movable notch extends axially, the second clutch member is located in the second movable groove, and the outer periphery of the second clutch member has a second movable protrusion. The second movable protrusion is located in the second movable notch. When the anti-locking cylinder is pushed and moves axially along with the first clutch member, the second movable protrusion can move axially within the second movable notch without being connected to the main lock cylinder in transmission.

[0014] Preferably, the outer periphery is provided with a rotating door pin.

[0015] Preferably, the lock cylinder device further includes a first housing, the first housing having a reverse lock cylinder channel for accommodating the transmission rod and the connecting piece, the main lock cylinder including a second housing, and the lock cylinder device having the second housing, the rotating seat, and the first housing arranged sequentially along the axial direction, the first housing and the second housing being connected by a fixing rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. When the user does not actively press the deadbolt handle, the clutch pin is only located in the annular groove, and the transmission rod and the connecting part are mechanically separated. Even if the deadbolt handle is rotated, it cannot drive the rotating seat to lock. Only when the user applies axial pressure, causing the connecting part to move, and the clutch pin enters the clutch groove, does the connecting rod and the transmission rod become connected, which in turn connects the connecting rod and the rotating seat. Rotating the deadbolt handle will then drive the deadbolt handle to rotate, thus achieving deadbolt locking. This utility model decomposes the deadbolt operation into two steps—pressing and rotating—through a clutch structure, thereby improving the anti-mislocking performance.

[0018] 2. The rotating seat of this utility model is connected to the main lock cylinder and the deadbolt lock cylinder respectively through a transmission assembly. The transmission assembly includes a connecting rod, a second spring, a first transmission component and a second transmission component located inside the rotating seat. One end of the connecting rod is connected to the deadbolt lock cylinder through a first clutch component, and the other end of the connecting rod is connected to the main lock cylinder through a second clutch component. The deadbolt lock cylinder also needs to push the transmission protrusion of the first transmission component into the transmission gap before it can be deadbolted, forming a second anti-mislocking barrier and further improving the anti-mislocking performance.

[0019] 3. During the rotation of the rotating seat driven by the deadbolt cylinder, the transmission protrusion of the second transmission component disengages from the transmission gap, so that the main lock cylinder and the rotating seat are in a state of transmission separation; similarly, when the main lock cylinder is connected to the rotating seat through the second transmission component, the transmission protrusion of the first transmission component disengages from the transmission gap, so that the main lock cylinder and the rotating seat are in a state of transmission separation; the main lock cylinder and the deadbolt cylinder do not affect each other when they are working.

[0020] 4. When the deadbolt cylinder is pushed and moves axially along with the main lock cylinder along with the first clutch, the second movable protrusion can move axially within the second movable notch without being connected to the main lock cylinder via transmission. That is, the main lock cylinder will not be driven axially by the transmission assembly. Similarly, the first clutch is located in the first movable groove, and the first movable protrusion is located in the first movable notch and can move axially within the first movable notch. This ensures that the overall position of the main lock cylinder and the deadbolt cylinder remains unchanged and will not shift. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the lock cylinder device for preventing accidental locking according to this utility model. Figure 1 ;

[0022] Figure 2 This is an explosion diagram of the anti-mislocking lock cylinder device of this utility model. Figure 1 ;

[0023] Figure 3 This is a connection diagram of the main lock cylinder, the deadbolt lock cylinder, and the transmission assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the lock cylinder device for preventing accidental locking according to this utility model. Figure 2 ;

[0025] Figure 5 yes Figure 4 Sectional view at point AA;

[0026] Figure 6 This is an explosion diagram of the anti-mislocking lock cylinder device of this utility model. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the interaction between the rotating seat, the first transmission component, and the first clutch component of this utility model;

[0028] The implementation, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0030] Reference Figures 1-7 This utility model provides an embodiment of a lock cylinder device for preventing accidental locking.

[0031] A lock cylinder device for preventing accidental locking includes, along the axial direction, a main lock cylinder 1 that can be opened with a key, a rotating base 2, and a deadbolt cylinder 3. The main lock cylinder 1 and the deadbolt cylinder 3 are respectively connected to both ends of the rotating base 2 and are used to drive the rotating base 2 to rotate.

[0032] like Figure 5 As shown, the deadbolt cylinder 3 includes, along the axial direction, a transmission rod 31, a connector 32, and a deadbolt handle 33. One end of the connector 32 has a receiving groove 321, and the other end is fixedly connected to the deadbolt handle 33. One end of the transmission rod 31 is connected to the rotating seat 2, and the other end of the transmission rod 31 is placed in the receiving groove 321 and connected to the connector 32 via a clutch structure. The clutch structure is used to engage or disengage the connector 32 from the transmission rod 31.

[0033] like Figure 6As shown, the clutch structure includes an annular groove 311 circumferentially disposed on the outer surface of the transmission rod 31, a clutch groove 312 formed by the annular groove 311 extending axially, a clutch pin 322, and a first spring 323 located in the receiving groove 321. One end of the clutch pin 322 penetrates radially into the receiving groove 321, and the connecting member 32 can move axially such that the end of the clutch pin 322 is located in the clutch groove 312 or the annular groove 311.

[0034] The transmission rod 31 has a spring groove 313 at one end facing the connector 32, and a first spring 323 is placed between the spring groove 313 and the receiving groove 321, making the connection between the transmission rod 31 and the connector 32 more compact.

[0035] The clutch groove 312 has a T-shaped structure, including a transmission recess 3121 extending circumferentially along the transmission rod 31, and a connecting recess 3122 connecting the transmission recess 3121 and the annular groove 311. The connecting recess 3122 extends axially along the transmission rod 31. During the process of the clutch pin 322 driving the transmission rod 31 to rotate within the transmission recess 3121, the clutch pin 322 is not easily disengaged from the clutch groove 312.

[0036] In this embodiment, the transmission rod 31 is provided with two clutch structures evenly arranged along its circumference, making the transmission rod 31 and the connecting member 32 more secure when they are connected. In other embodiments, the transmission rod 31 is provided with no fewer than two clutch structures evenly arranged along its circumference.

[0037] The rotating base 2 is provided with a transmission channel 21 that runs axially through the entire rotating base 2. The lock cylinder device also includes a transmission assembly. The transmission assembly includes a connecting rod 41 that runs through the transmission channel 21 and a second spring 42 sleeved on the connecting rod 41. One end of the connecting rod 41 is connected to the deadbolt lock cylinder 3 through a first clutch 43, and the other end of the connecting rod 41 is connected to the deadbolt lock cylinder 3 through a second clutch 44. The transmission channel 21 is equipped with a first transmission member 45 near the first clutch 43 and a second transmission member 46 near the second clutch 44. The outer walls of both the first transmission member 45 and the second transmission member 46 are provided with transmission protrusions 47, and the centers of both the first transmission member 45 and the second transmission member 46 are provided with through holes for the connecting rod 41 to pass through. The inner wall of the transmission channel 21 is provided with a plurality of arc-shaped protrusions 22 for mounting the transmission protrusions 47. At least two arc-shaped protrusions 22 are provided around the first transmission member 45 and the second transmission member 46. The transmission gap 23 is between adjacent arc-shaped protrusions 22, and the width of the transmission gap 23 is adapted to the transmission protrusions 47.

[0038] When the deadbolt cylinder 3 is not subjected to thrust, the transmission protrusion 47 of the second transmission component 46 is located within the transmission gap 23, the main lock cylinder 1 is connected to the rotating seat 2, and the transmission protrusion 47 of the first transmission component 45 is mounted on the arc-shaped boss 22, so the deadbolt cylinder 3 and the rotating seat 2 are in a state of transmission separation. The user can drive the main lock cylinder 1 and the rotating seat 2 to rotate together using a key.

[0039] The deadbolt cylinder 3, under the thrust, moves axially toward the main lock cylinder 1 together with the first clutch 43, pushing the transmission protrusion 47 of the first transmission component 45 into the transmission gap 23, thus establishing a transmission connection between the deadbolt cylinder 3 and the rotating seat 2. Simultaneously, the second spring 42 causes the transmission protrusion 47 of the second transmission component 46 to disengage from the transmission gap 23, putting the main lock cylinder 1 and the rotating seat 2 in a state of transmission separation. The user can rotate the deadbolt handle 33 to drive the rotating seat 2 to rotate, thereby achieving deadbolt locking.

[0040] The transmission rod 31 has a first movable groove 314 at one end facing the first transmission member 45. The transmission rod 31 has a first movable notch 315 communicating with the first movable groove 314. The first movable notch 315 extends axially. The first clutch member 43 is located in the first movable groove 314. The outer periphery of the first clutch member 43 has a first movable protrusion 431. The first movable protrusion 431 is located in the first movable notch 315 and can move axially within the first movable notch 315.

[0041] The main lock cylinder 1 has a second movable groove 11 at one end facing the second transmission member 46. The main lock cylinder 1 has a second movable notch 12 that communicates with the second movable groove 11. The second movable notch 12 extends axially. The second clutch member 44 is located in the second movable groove 11. The outer periphery of the second clutch member 44 has a second movable protrusion 441. The second movable protrusion 441 is located in the second movable notch 12. When the anti-locking cylinder 3 is pushed and moves axially along the main lock cylinder 1 together with the first clutch member 43, the second movable protrusion 441 can move axially within the second movable notch 12 and is not connected to the main lock cylinder 1 in transmission.

[0042] In this embodiment, the first clutch 43 is engaged with the first transmission member 45, and the second clutch 44 is engaged with the second transmission member 46.

[0043] The locking process of this utility model is as follows: First, the user pushes the locking handle 33 axially toward the main lock cylinder 1, causing the locking handle 33 and the connecting piece 32 to move together, and the clutch pin 322 enters the clutch groove 312. Continuing to push the locking handle 33, the user can drive the transmission rod 31 to move together until the transmission rod 31 contacts the first movable protrusion 431, i.e., the transmission rod 31 is connected to the first clutch piece 43. Then, continuing to lock the handle 33 causes the transmission protrusion 47 of the first transmission piece 45 to be located in the transmission gap 23, i.e., the locking cylinder 3 is connected to the rotating seat 2. Simultaneously, the second spring 42 drives the transmission protrusion 47 of the second transmission piece 46 to disengage from the transmission gap 23, the second clutch piece 44 moves in the second movable groove 11, and the second movable protrusion 441 moves in the second movable notch 12, but the main lock cylinder 1 will not be driven to move axially by the transmission components. Afterwards, the user can rotate the locking handle 33, which will drive the rotating seat 2 to rotate, thus achieving locking. After locking, if the deadbolt handle 33 is not pushed further, the first spring 323 will cause the connecting piece 32 and the deadbolt handle 33 to reset. The second spring 42 will cause the transmission assembly to reset.

[0044] Rotating seat 2 is provided with rotating door pin 24 on its outer periphery.

[0045] The lock cylinder device also includes a first housing 34, which has a reverse lock cylinder channel for accommodating the transmission rod 31 and the connecting piece 32. The main lock cylinder 1 includes a second housing 13. The lock cylinder device is arranged axially with the second housing 13, the rotating seat 2, and the first housing 34 connected to the second housing 13 by a fixing rod 14, so that the main lock cylinder 1, the rotating seat 2 and the reverse lock cylinder 3 are connected as one unit.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A lock cylinder device for preventing accidental locking, characterized in that, The structure includes, along the axial direction, a main lock cylinder (1) that can be opened with a key, a rotating seat (2), and a deadbolt cylinder (3). The main lock cylinder (1) and the deadbolt cylinder (3) are respectively connected to both ends of the rotating seat (2) and are used to drive the rotating seat (2) to rotate. The deadbolt cylinder (3) includes, along the axial direction, a transmission rod (31), a connector (32), and a deadbolt handle (33). One end of the connector (32) is provided with a receiving groove (321), and the other end of the connector (32) is fixedly connected to the deadbolt handle (33). One end of the transmission rod (31) is connected to the rotating seat (2), and the other end of the transmission rod (31) is placed in the receiving groove (321) and connected to the deadbolt handle (33). The clutch structure is connected to the connecting member (32), and the clutch structure is used to engage or disengage the connecting member (32) from the transmission rod (31). The clutch structure includes an annular groove (311) arranged circumferentially on the outer surface of the transmission rod (31), a clutch groove (312) formed by the annular groove (311) extending axially, a clutch pin (322), and a first spring (323) located in the receiving groove (321). One end of the clutch pin (322) penetrates radially into the receiving groove (321), and the connecting member (32) can move axially so that the end of the clutch pin (322) is located in the clutch groove (312) or the annular groove (311).

2. The lock cylinder device for preventing accidental locking according to claim 1, characterized in that, The transmission rod (31) has a spring groove (313) at one end facing the connector (32), and the first spring (323) is placed between the spring groove (313) and the receiving groove (321).

3. The lock cylinder device for preventing accidental locking according to claim 1, characterized in that, The clutch groove (312) has a T-shaped structure, including a transmission recess (3121) extending circumferentially along the transmission rod (31), and a connecting recess (3122) connecting the transmission recess (3121) and the annular groove (311). The connecting recess (3122) extends axially along the transmission rod (31).

4. The lock cylinder device for preventing accidental locking according to claim 1, characterized in that, The transmission rod (31) is provided with at least two clutch structures evenly arranged along the circumference.

5. A lock cylinder device for preventing accidental locking according to claim 1, characterized in that, It also includes a transmission assembly (4), wherein the rotating seat (2) is provided with a transmission channel (21) that runs through the entire rotating seat (2) axially, and the transmission assembly (4) includes a connecting rod (41) that runs through the transmission channel (21) and a second spring (42) sleeved on the connecting rod (41); one end of the connecting rod (41) is connected to the anti-lock cylinder (3) through a first clutch (43), and the other end of the connecting rod (41) is connected to the main lock cylinder (1) through a second clutch (44), and the transmission channel (21) is equipped with a first transmission component (45) near the first clutch (43) and a second transmission component (46) near the second clutch (44), and the outer walls of the first transmission component (45) and the second transmission component (46) are both provided with transmission protrusions (47), and the centers of the first transmission component (45) and the second transmission component (46) are both provided with through holes for the connecting rod (41) to pass through; the transmission channel (21) The inner wall is provided with multiple arc-shaped protrusions (22) for mounting the transmission protrusions (47). The outer periphery of the first transmission member (45) and the second transmission member (46) is provided with at least two arc-shaped protrusions (22). The transmission gap (23) is between adjacent arc-shaped protrusions (22). The width of the transmission gap (23) is adapted to the transmission protrusions (47). When the anti-locking cylinder (3) is not pushed, the transmission protrusions (47) of the second transmission member (46) are located in the transmission gap (23), and the transmission protrusions (47) of the first transmission member (45) are mounted on the arc-shaped protrusions (22). When the anti-locking cylinder (3) is pushed, it moves axially toward the main lock cylinder (1) together with the first clutch member (43), and pushes the transmission protrusions (47) of the first transmission member (45) into the transmission gap (23). At the same time, the transmission protrusions (47) of the second transmission member (46) are disengaged from the transmission gap (23) by the second spring (42).

6. The lock cylinder device for preventing accidental locking according to claim 5, characterized in that, The transmission rod (31) has a first movable groove (314) at one end facing the first transmission member (45). The transmission rod (31) has a first movable notch (315) communicating with the first movable groove (314). The first movable notch (315) extends axially. The first clutch member (43) is located in the first movable groove (314). The outer periphery of the first clutch member (43) has a first movable protrusion (314). The first movable protrusion (314) is located in the first movable notch (315) and can move axially within the first movable notch (315).

7. A lock cylinder device for preventing accidental locking according to claim 5, characterized in that, The main lock cylinder (1) has a second movable groove (11) at one end facing the second transmission member (46). The main lock cylinder (1) has a second movable notch (12) communicating with the second movable groove (11). The second movable notch (12) extends axially. The second clutch member (44) is located in the second movable groove (11). The outer periphery of the second clutch member (44) has a second movable protrusion (441). The second movable protrusion (441) is located in the second movable notch (12). When the anti-locking cylinder (3) is pushed and moves axially with the first clutch member (43) along with the main lock cylinder (1), the second movable protrusion (441) can move axially in the second movable notch (12) and is not connected to the main lock cylinder (1) in transmission.

8. A lock cylinder device for preventing accidental locking according to claim 1, characterized in that, The rotating seat (2) is provided with a rotating door pin (24) on its outer periphery.

9. A lock cylinder device for preventing accidental locking according to claim 1, characterized in that, It also includes a first housing (34), which has a reverse lock cylinder channel for accommodating the transmission rod (31) and the connecting piece (32). The main lock cylinder (1) includes a second housing (13). The lock cylinder device is arranged axially in the order of the second housing (13), the rotating seat (2), and the first housing (34). The first housing (34) and the second housing (13) are connected by a fixing rod (14).

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