Door lock structure

Abstract

This invention discloses a door lock structure having a lock case, a latch, a drive means, a position restriction member, and an interlocking means. The lock case has an internal chamber and a latch passage at its top. The latch is disposed within the chamber and partially extends into the latch passage. A first elastic member is disposed between the chamber and the chamber wall. The drive means is disposed within the chamber and acts on the latch to drive its movement for locking operation. The position restriction member is rotatably disposed within the chamber by a second elastic member and has a first state in which the latch is locked and restricted when in the locked position and can be held by the action of the second elastic member, and a second state in which the position restriction of the latch is released when in an energized state. The interlocking means is disposed within the chamber and interlocks the position restriction member with the drive means. The drive means can bias the position restriction member to transition from the first state to the second state. This door lock structure enables quick locking and unlocking.

Description

[Technical Field]

[0001] This invention claims priority from Chinese Patent Application No. 202321161895.8, filed with the China Patent Office on May 15, 2023, entitled "Door Lock Structure," the entire contents of which are incorporated herein by reference.

[0002] (Technical field) The present invention relates to the technical field of platform hardware, and in particular to a door lock structure. [Background technology]

[0003] A door lock is a hardware attached to a door to maintain privacy within the space. Its basic structure includes a latch that can expand and contract under the action of external force, and is fitted with a locking box attached to the door frame to prevent the door from being opened unexpectedly, such as by wind. Conventional door locks have problems such as complicated locking and unlocking structures and long waiting times. Furthermore, in conventional door lock structures, the drive motor constantly operates on the latch, significantly shortening the service life of the drive motor.

[0004] The information disclosed in the Background Art section is merely intended to deepen understanding of the overall background of the present invention, and is not to be considered as an admission or in any way suggestion that the information provided is prior art well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0005] The object of this invention is to provide a door lock structure that is simple in structure and allows quick locking and unlocking operations. [Means for solving the problem]

[0006] To achieve the above object, the present invention provides a door lock structure including a lock case, a latch, a driving means, a position restricting member, and an interlocking means.

[0007] The lock case has a chamber formed therein and a latch passage communicating with the chamber provided at the top; the latch is provided within the chamber and extends partially into the latch passage; a first elastic member is provided between the latch and the chamber wall; the drive means is provided within the chamber and acts on the latch to drive movement of the latch to perform a locking operation; the position control member is rotatably provided within the chamber by a second elastic member and has a first state in which the latch is locked and controlled when the latch is in the locked position and can be held by the action of the second elastic member, and a second state in which the position control of the latch is released when in an energized state; the interlocking means is provided within the chamber and interlocks the position control member with the drive means; and the drive means can energize the position control member to transition from the first state to the second state.

[0008] In one or more embodiments, the second elastic member is a torsion spring, and the torsion spring constantly provides torque that transitions the position restriction member from the second state to the first state.

[0009] In one or more embodiments, the position regulating member has a first position regulating portion formed in a hook shape, and when the position regulating member is in a first state, the tip of the latch is lower than the first position regulating portion of the position regulating member, and the first position regulating portion abuts against the tip of the latch.

[0010] In one or more embodiments, the latch has a latch body and a second position regulating portion formed at the tip of the latch body, the radial dimension of the second position regulating portion is larger than the radial dimension of the latch body, and the first position regulating portion abuts above the second position regulating portion to lock and regulate the latch.

[0011] In one or more embodiments, the position regulating member has a first abutment portion, and a third position regulating portion is formed on the chamber wall of the lock case, and the third position regulating portion aligns with the first abutment portion to hold the position regulating member in the first state.

[0012] In one or more embodiments, the position regulating member has a second abutment portion, and the interlocking means drives the position regulating member to transition from the first state to the second state in accordance with the second abutment portion.

[0013] In one or more embodiments, the driving means has a driving lever with a third abutment portion, the interlocking means has a first trigger lever and a second trigger lever, the first trigger lever is rotatably provided within the chamber and acts on the second trigger lever, the first trigger lever rotates in alignment with the third abutment portion due to the action of the third abutment portion, and drives the second trigger lever to move along the axial direction of the latch.

[0014] In one or more embodiments, a third elastic member is provided between the second trigger lever and the chamber wall of the lock case, and the third elastic member is positioned such that the third elastic member is in a compressed state when the first trigger lever drives the movement of the second trigger lever.

[0015] In one or more embodiments, a groove is formed in the drive lever along its axial direction, the third abutment portion is formed on the inner wall of the groove on the side closer to the latch, and one end of the first trigger lever is located within the groove.

[0016] In one or more embodiments, the drive means further comprises a drive motor fixed within the chamber, and a drive screw that threadably engages with the drive lever and rotates to move the drive lever and thereby drive movement of the latch. [Effects of the Invention]

[0017] Compared with the prior art, the door lock structure of the present invention can quickly lock and unlock the door by aligning the installation of the position restricting member, the second elastic member, and the interlocking means with the driving means, eliminating the need to wait for a long time. In addition, the door lock structure is simple and easy to assemble. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of a door lock structure according to an embodiment of the present invention; [Figure 2] 1 is an internal view of a door lock structure according to an embodiment of the present invention; [Figure 3] 3 is a detailed view of a position restricting member in the door lock structure according to the embodiment of the present invention; [Figure 4] 3 is a detailed view of the driving lever of the door lock structure according to the embodiment of the present invention; [Figure 5] 2 is a detailed view of a latch in the door lock structure according to the embodiment of the present invention; FIG. [Figure 6] 3 is a detailed view of the interlocking mechanism in the door lock structure according to the embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] Throughout the specification and claims, unless otherwise specified, the term "comprise" or variations thereof, such as "contain" or "include," is understood to include the stated element or component and not to exclude other elements or components.

[0021] As shown in Figures 1 and 2, one embodiment of the present invention provides a door lock structure including a lock case 10, a driving means 20, a latch 30, a first elastic member 40, a position limiting member 50, an interlocking member 60, and a second elastic member 70 (shown in Figure 6). The driving means 20, the latch 30, the first elastic member 40, the position limiting member 50, the interlocking member 60, and the second elastic member 70 are all installed within the lock case 10, with the first elastic member 40 positioned between the latch 30 and the lock case 10. Some members of the driving means 20 move up and down within the lock case 10 to push the latch 30 to lock or the interlocking member 60 to unlock. The position limiting member 50 acts on the latch 30 to lock or unlock the door in cooperation with the driving means 20, the interlocking member 60, the second elastic member 70, and the first elastic member 40. The interlocking means 60 interlocks the position restriction member 50 with the driving means 20, and biases the position restriction member 50 by the action of the driving means 20, thereby unlocking the latch 30. The second elastic member 70 acts on the position restriction member 50, and holds the position restriction member 50 in the locked state.

[0022] Although the lock case 10 is generally cylindrical, in other embodiments it may be shaped like a rectangular parallelepiped, and the present invention is not limited thereto. The lock case 10 is formed by joining two semi-cylindrical cases together, allowing the upper and / or lower sections of the semi-cylindrical cases to be easily removed for maintenance, and end caps can be added to further regulate the position of the semi-cylindrical cases. A chamber and a latch passage 12 are formed within the lock case 10, and the latch passage 12 is connected to the chamber. In this embodiment, the chamber has, in the axial direction of the lock case, an attachment chamber 111 located at the top, a connecting passage 112 located in the middle, and a latch chamber 113 located at the bottom, in that order. The connecting passage 112 is connected between the attachment chamber 111 and the latch chamber 113, and the other end of the latch chamber 113 is connected to the latch passage 12 that passes through the lock case 10. The chamber further has a storage chamber 114 for storing the interlocking means 60, the position control member 50 and the second elastic member 70, and the storage chamber 114 is located on the side of the latch chamber 113 and is connected to the connecting passage 112 and the latch chamber 113.

[0023] The drive means 20 is provided in the mounting chamber 111 and partially extends into the connecting passage 112 and the latch chamber 113. The drive means 20 has a drive motor 21, a drive screw 22, and a drive lever 23. The drive motor 21 is fixed in the mounting chamber 111, and the drive lever 23 is provided movably in the connecting passage 112 and extends into the latch chamber 113. The drive motor 21 is connected to one end of the drive screw 22, and the drive lever 23 is screwed onto the other end. When the drive screw 22 rotates, the drive lever 23 moves along the connecting passage 112 and the latch chamber 113, moving the latch 30 and performing a locking operation.

[0024] As shown in FIGS. 2, 3, and 6, the position restriction member 50, the interlocking means 60, and the second elastic member 70 are all provided within the accommodating chamber 114. The position restriction member 50 is pivotally mounted by the second elastic member 70 at the communicating portion between the accommodating chamber 114 and the latch chamber 113, and a portion of the position restriction member 50 extends into the latch chamber 113 to act on the latch 30. The position restriction member 50 has a first state in which it locks and restricts the latch 30 when the latch 30 is in the locked position and can be held in place by the action of the second elastic member 70, and a second state in which it is biased and releases the restriction on the position of the latch 30. The second elastic member 70 is a torsion spring, one end of which is fixed to the position restriction member 50 and the other end of which is fixed to the chamber wall of the accommodating chamber 114. The torsion spring constantly provides torque to transition the position restriction member 50 from the second state to the first state.

[0025] The position restriction member 50 is provided with a first position restriction portion 51, a first abutment portion 52, and a second abutment portion 53, arranged in this order along its rotation direction (the direction of rotation when locked). The first position restriction portion 51 is hook-shaped, and when the position restriction member 50 is in the first state, the tip of the latch 30 is lower than the first position restriction portion 51 of the position restriction member 50, and the first position restriction portion 51 of the position restriction member 50 abuts against the tip of the latch 30, locking and restricting the latch 30. The first abutment portion 52 is arranged opposite the first position restriction portion 51. A third position restriction portion 80 is formed on the chamber wall of the storage chamber 114 of the lock case 10. Preferably, the cylindrical second position restriction portion 80 extends perpendicular to the locking direction of the latch 30 and is located forward of the first abutment portion 52 on the position restriction member 50 in the locking direction. The third position restriction portion 80 aligns with the first abutment portion 52 to hold the position restriction member 50 in the first state. For example, when the first position restriction portion 51 of the position restriction member 50 abuts against the tip of the latch 30 to restrict its position, the third position restriction portion 80 also abuts against the first abutment portion 52, preventing the position restriction member 50 from continuing to press the latch 30 due to the torque of the second elastic member 70. At the same time, after the position restriction member 50 is pushed by the interlocking means 60 to rotate and unlock the latch 30, the interlocking means 60 removes the force acting on the position restriction member 50, and the position restriction member 50 returns to the first state due to the torque of the second elastic member 70. At this time, the third position restriction portion 80 also abuts against the first abutment portion 52, preventing the position restriction member 50 from continuing to rotate due to the torque of the second elastic member 70, thereby preventing the latch 30 from failing to lock the next time. The second contact portion 53 has a contact surface, and drives the position restriction member 50 in accordance with the interlocking means 60 to transition the position restriction member 50 from the first state to the second state.

[0026] In order to prevent the position regulating member 50 in the second state from continuing to rotate in the locking direction due to the torque action of the second elastic member 70 when the interlocking means removes the external force, the door lock structure of the present invention provides the third position regulating portion 80 and the first abutment portion 52, so that the position regulating member 50 is held in the first state by the torque action of the second elastic member 70.

[0027] 4, the drive lever 23 is provided in a substantially cylindrical shape, and a groove 231 is formed in the drive lever 23 along its axial direction, and the groove 231 accommodates a part of the interlocking means 60. A third abutment portion is formed on the inner wall of the groove 231 on the side close to the latch 30, and the third abutment portion moves a part of the interlocking means 60 as the drive lever 23 moves upward, causing the interlocking means 60 to act on the position restriction member 50 and unlock the door.

[0028] In another embodiment, a protrusion may be formed directly on the driving lever 23 to form the third abutment portion, and the protrusion is installed so that when the driving lever 23 moves upward, it moves a part of the interlocking means 60, causing the interlocking means 60 to act on the position control member 50, thereby unlocking the door lock.

[0029] 2 and 5, the latch 30 is disposed within the latch chamber 113 and partially extends into the latch passage 12. The latch passage 12 can radially restrict the position of the latch 30, enabling accurate locking and unlocking without getting caught. The latch 30 is also disposed in a substantially cylindrical shape and includes a latch body 31 and a second position restriction portion 32 formed at the tip of the latch body 31. The minimum radial cross-sectional area of ​​the second position restriction portion 32 is larger than the radial cross-sectional area of ​​the latch body 31. Preferably, the axial cross-section of the latch 30 is T-shaped. A first elastic member 40 is disposed between the second position restriction portion 32 of the latch 30 and the latch chamber wall located at the end of the latch passage 12. The first elastic member 40 is a spring. When locking, the first position restriction portion 51 of the position restriction member 50 abuts against the upper side of the second position restriction portion 32 of the latch 30, locking and restricting the latch 30, and at this time, the first elastic member 40 is in a compressed state. When unlocking, the interlocking means 60 acts on the position restriction member 50, rotating it to the second state and unlocking the latch 30, and at this time, the first elastic member 40 assists the rebound reset of the latch 30 to unlock it.

[0030] As shown in FIG. 6 , the interlocking mechanism 60 includes a first trigger lever 61, a second trigger lever 62, and a third elastic member 63. The first trigger lever 61 is pivotally mounted within the accommodating chamber 114 and acts on the second trigger lever 62. The second trigger lever 62 is movably mounted within the accommodating chamber 114 along the axial direction of the lock case 10 and is located below the first trigger lever 61. The third elastic member 63 is provided between the second trigger lever 62 and the inner wall of the accommodating chamber 114. The first trigger lever 61 has a first end and a second end that are opposed to each other. The first end is located within the groove 231 of the latch 30, and the second end is located above the second trigger lever 62. The first trigger lever 61 is rotated by the action of the latch 30, and its second end is pressed against the second trigger lever 62, driving the second trigger lever 62 to move along the axial direction of the latch 30 and compressing the third elastic member 63. Preferably, the third elastic member 63 is a spring. The other end of the second trigger lever 62 is located above the second contact portion 53 of the position restriction member 50, and moves by the action of the first trigger lever 61 to contact the contact surface of the second contact portion 53, causing the position restriction member 50 to rotate.

[0031] During locking, the drive lever 23 moves downward to the first position, compressing the first elastic member 40. During this process, one end of the first trigger lever 61 moves freely within the groove 231 of the drive lever 23. The latch 30 moves toward the exit of the latch passage 12, compressing the first elastic member 40. Finally, the first position restriction portion 51 of the position restriction member 50 engages with the tip of the latch 30. The contact force of the first position restriction portion 51 (torque provided by the second elastic member 70) interacts with the elastic force of the first elastic member 40 and the contact force provided by the third position restriction portion 80 to the first contact portion 52, thereby maintaining the latch 30 in the first position and locking the latch 30. At this time, the drive motor 21 drives the drive lever 23 to move upward to a certain extent, and one end of the first trigger lever 61 continues to move within the groove 231 of the drive lever 23 and gradually approaches one end of the groove 231 of the drive lever 23. When unlocking, the drive lever 23 moves upward to the second position, and the inner wall of the groove 231 of the drive lever 23 moves one end of the first trigger lever 61 upward, rotating the first trigger lever 61 and pressing the second trigger lever 62, which drives the second trigger lever 62 to move downward along the axial direction of the latch 30, pressing the second abutment portion 53 of the position restriction member 50 and compressing the third elastic member 63. When the position restriction member 50 rotates, the first position restriction portion 51 moves away from the tip of the latch 30, and the latch 30 moves upward clockwise to the unlocked position due to the action of the first elastic member 40. At this time, the drive lever moves downward, the second trigger lever 62 returns due to the action of the third elastic member 63, and the position regulating member 50 returns to the first state due to the torque action of the second elastic member 70 and the action of the abutment force provided to the first abutment portion 52 by the third position regulating portion 80.

[0032] Compared with the prior art, the door lock structure of the present invention can quickly lock and unlock the door by aligning the installation of the position restricting member, the second elastic member, and the interlocking means with the driving means, eliminating the need to wait for a long time. In addition, the door lock structure is simple and easy to assemble.

[0033] The foregoing description of specific embodiments of the present invention has been provided for purposes of explanation and illustration. It is not intended that these descriptions be construed as limiting the present invention to the precise forms disclosed, and it is apparent that numerous modifications and variations are possible in light of the above teachings. The purpose of selecting and describing exemplary embodiments is to enable those skilled in the art to realize and utilize a variety of different exemplary embodiments and various different choices and variations of the present invention by understanding the specific principles of the present invention and its practical applications. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. a lock case having a chamber formed therein and a latch passage communicating with the chamber provided at an upper portion thereof; a latch provided within the chamber, a portion of the latch passage extending into the latch passage, and a first elastic member provided between the latch and a chamber wall of the chamber; a driving means disposed within the chamber for acting on the latch to drive the movement of the latch to perform a locking operation; a position restriction member rotatably provided in the chamber by a second elastic member, the position restriction member having a first state in which the latch is locked and restricted when the latch is in the locked position and can be held by the action of the second elastic member, and a second state in which the position restriction of the latch is released when the position restriction member is biased; a linking means provided within the chamber, linking the position regulating member with the driving means, and biasing the position regulating member by the action of the driving means to transition it from the first state to the second state.

2. 2. The door lock structure according to claim 1, wherein the second elastic member is a torsion spring, and the torsion spring constantly provides a torque that transitions the position restriction member from the second state to the first state.

3. the position restriction member includes a first position restriction portion provided in a hook shape, 2. The door lock structure according to claim 1, wherein when the position regulating member is in the first state, the tip of the latch is lower than the first position regulating portion of the position regulating member, and the first position regulating portion abuts against the tip of the latch.

4. The door lock structure according to claim 3, characterized in that the latch has a latch body and a second position regulating portion formed at the tip of the latch body, the radial dimension of the second position regulating portion is larger than the radial dimension of the latch body, and the first position regulating portion abuts above the second position regulating portion to lock and regulate the latch.

5. the position restriction member includes a first contact portion, 2. The door lock structure according to claim 1, wherein a third position restriction portion is formed on the chamber wall of the lock case, and the third position restriction portion is aligned with the first abutment portion to hold the position restriction member in the first state.

6. the position restriction member includes a second contact portion, 2. The door lock structure according to claim 1, wherein the interlocking means drives the position restricting member to transition from the first state to the second state in accordance with the second contact portion.

7. the driving means has a driving lever having a third abutment portion, 2. The door lock structure according to claim 1, wherein the interlocking means has a first trigger lever and a second trigger lever, the first trigger lever is rotatably provided within the chamber and acts on the second trigger lever, the first trigger lever rotates in accordance with the third abutment portion due to the action of the third abutment portion, and the second trigger lever is driven to move along the axial direction of the latch.

8. 8. The door lock structure according to claim 7, wherein a third elastic member is provided between the second trigger lever and the chamber wall of the lock case, and the third elastic member is installed so that the third elastic member is in a compressed state when the first trigger lever drives the movement of the second trigger lever.

9. The door lock structure according to claim 7, wherein a groove is formed in the drive lever along its axial direction, the third abutment portion is formed on the inner wall of the groove on the side closest to the latch, and one end of the first trigger lever is located within the groove.

10. 8. The door lock structure according to claim 7, wherein the driving means further comprises a driving motor fixed within the chamber, and a driving screw that is threadedly engaged with the driving lever and rotates to move the driving lever and thereby drive the movement of the latch.

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