Automatic unlocking door lock structure
By designing an automatic unlocking door lock structure including square tube, fixed cam, rotating cam, brake cam, sliding lock pad and bumper, the problem of the lack of automatic unlocking structure of existing door locks is solved, and the function of automatic unlocking of door locks is realized, improving user safety and convenience.
Patent Information
- Application Number
- CN202421287977.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing door lock lacks an automatic unlocking structure, which causes people to be locked outside the door when strong winds or other factors cause the door to be suddenly closed, making it very troublesome to find a key to open the door.
An automatic unlocking door lock structure is designed, including a square tube connected to the inner handle, a fixed cam, a rotary cam, a brake cam, a sliding lock plate and a bumper. The sliding lock is pushed into the groove of the brake cam by the bumper, causing the door lock to automatically unlock.
When the door lock is in a locked state, just turn the inner handle and all components of the door lock can be restored to the unlocked state, achieving the purpose of automatic unlocking and avoiding the trouble of being locked outside the door.
Smart Images
Figure CN222595737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lock, in particular to an automatic unlocking door lock structure. Background Art
[0002] Most of the existing door locks, such as those installed on the doors of various rooms in a suite, including the doors of bedrooms, study rooms, bathrooms or kitchens, do not have automatic unlocking structures. People living indoors usually do not always have keys to open the doors of the rooms except for the keys to the door locks for entering the room. Therefore, when the door locks of such indoor doors are locked and the doors are suddenly closed due to strong winds or other factors, and people are locked out, it is really troublesome to look for the keys to open the door. Utility Model Content
[0003] The purpose of the utility model is to overcome the defects of the prior art and provide an automatic unlocking door lock structure.
[0004] According to the utility model, an automatic unlocking door lock structure is provided, including a square tube connected to the inner handle, a fixed cam connected to the end of the square tube, a rotating cam that can be nested and connected with the fixed cam, a braking cam arranged on the opposite side of the fixed cam, a sliding locking plate arranged between the fixed cam and the braking cam, and a safety rod passed through the inner side of the square tube, the front end of the safety rod is inserted into the central through hole of the rotating cam and the braking cam and can drive the two to rotate, the rear end of the safety rod is connected to the knob assembly arranged on the inner handle, the edge of the fixed cam is provided with a boss extending obliquely along its bottom side, an obliquely extending inclined surface is provided between the boss and the bottom side, the rotating cam includes a central circular body and a lug, the lug is provided with an obliquely extending inclined surface, one side of the braking cam is provided with a groove extending along its axial direction, and the sliding locking plate can be stuck in the groove of the braking cam.
[0005] A circular through hole is provided in the center of the bottom side of the fixed cam.
[0006] The diameter of the central circle of the rotating cam is smaller than the diameter of the fixed cam.
[0007] The central through holes of the rotating cam and the braking cam are long and narrow through holes.
[0008] The door lock structure also includes a reel assembly arranged on one side of the outer handle, and the brake cam can extend into the interior of the reel assembly.
[0009] The reel assembly is provided with two opposite slits along its axial direction, and the two ends of the sliding locking sheet can be inserted into the two slits of the reel assembly.
[0010] The door lock structure also includes a large top spring and a small top spring arranged on one side of the outer handle, the large top spring is used to push the sliding lock plate toward the inner handle, and the small top spring is used to push the brake cam toward the inner handle.
[0011] The safety rod is arranged in a flat shape of a long strip.
[0012] According to the automatic unlocking door lock structure of the utility model, when the door lock is in a locked state, all components of the door lock can be restored to an unlocked state by simply turning the inner handle, thereby achieving the purpose of automatic unlocking. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1A 2 is a schematic diagram showing an embodiment of an automatic unlocking door lock structure according to the utility model.
[0014] Figure 1B It means containing Figure 1A A schematic diagram of the internal structure of a door lock of the door lock structure shown.
[0015] Figure 2 Yes means Figure 1A A schematic exploded view of the door lock structure shown.
[0016] Figure 3A Yes means Figure 2 A three-dimensional schematic diagram of a fixed cam is shown.
[0017] Figure 3B Yes means Figure 2 A three-dimensional schematic diagram of a rotating cam is shown.
[0018] Figure 3C Yes means Figure 2 A schematic perspective view of a brake cam is shown.
[0019] Figure 4 It is a schematic diagram showing an unlocked state of the door lock structure shown in FIG1 .
[0020] FIG. 5 is a schematic diagram showing a door locking state of the door lock structure shown in FIG. 1 .
[0021] Figure 6 It is a partial perspective view showing the door locking state of the door lock structure shown in FIG. 5 .
[0022] Figure 7 It is a partial schematic diagram of the door lock structure shown in FIG1 for illustrating automatic unlocking.
[0023] Figure 8 It is a partial enlarged view of the schematic diagram of the component explosion of the door lock structure shown in Figure 3. DETAILED DESCRIPTION
[0024] The following is a description of a door lock structure with an automatic unlocking function according to the utility model in conjunction with the accompanying drawings and embodiments, as shown in the drawings: A-fixing ring, B-front stopper, C-reel assembly (reel + latch plate + latch leaf spring), D-gasket, E-safety bar, F-large top spring, G-small top spring, H-brake cam, J-sliding lock plate, K-rotating cam, L-fixed cam, M-square tube, N-tightening spring, P-reel sleeve.
[0025] in, Figure 1A is a schematic diagram showing an embodiment of an automatic unlocking door lock structure according to the utility model, Figure 1B It means containing Figure 1A A schematic diagram of the internal structure of a door lock of the door lock structure shown in FIG. Figure 2 Yes means Figure 1A A schematic diagram of the door lock structure shown in FIG. Figure 1A to Figure 2 According to the automatic unlocking door lock structure of the utility model, it includes a square tube M connected to the inner handle, a fixed cam L connected to the end of the square tube, a rotating cam K that can be nested and connected with the fixed cam, a braking cam H arranged on the opposite side of the fixed cam L, a sliding lock piece J arranged between the fixed cam L and the braking cam H, and a safety rod E passing through the inner side of the square tube. The safety rod E is, for example, arranged in a long flat shape, and its front end can be inserted into the central through hole (for example, a rectangular through hole) of the rotating cam K and the braking cam H, and can drive the two to rotate, and the rear end of the safety rod can be connected to the knob assembly 21 arranged on the inner handle.
[0026] Figure 3A Yes means Figure 2 A three-dimensional schematic diagram of a fixed cam is shown. Figure 3B Yes means Figure 2 A three-dimensional schematic diagram of a rotating cam is shown. Figure 3C Yes means Figure 2 A three-dimensional schematic diagram of a brake cam is shown. Figures 3A to 3C The center of the bottom side L1 of the fixed cam L is provided with a circular through hole, for example, and its end L2 is square, for example, and can be connected to the square tube M. The edge of the fixed cam L is provided with a boss L3 that is higher than its bottom side L1, for example, and an obliquely extending inclined surface L4 is provided between the boss L3 and the bottom side L1. The diameter of the central circular body K1 of the rotating cam K is, for example, smaller than the diameter of the fixed cam L, and its lug K3 is provided with an obliquely extending inclined surface K4, for example. When the inclined surface K4 and the inclined surface L4 coincide with each other, the rotating cam K can be fitted into the fixed cam L. The opposite sides of the flange H3 of the brake cam H are provided with grooves H1 extending in the axial direction, for example. The centers of the rotating cam K and the brake cam H are provided with, for example, narrow and long through holes K2 and H2.
[0027] Figure 41 is a schematic diagram showing an unlocked state of the door lock structure shown in FIG. Figure 5A and 5B is a schematic diagram showing a locked door state of the door lock structure shown in FIG1 , Figure 6 Yes means Figure 5B A partial perspective view of the door lock structure in the locked state. Figures 4 to 6 In the unlocked state, the rotating cam K is basically nested inside the fixed cam L. Since the edge of the fixed cam L is provided with a boss L3 extending obliquely along the bottom side L1 thereof, the rotating cam K can move between the bottom side L1 of the fixed cam L and the boss L3. Since the opposite side of the brake cam H is provided with a groove H1 extending along its axial direction, in the locked state, the sliding lock piece J can be inserted into the groove H1 of the brake cam H. A reel assembly C is provided on one side of the outer handle, and the brake cam H can extend into the interior of the reel assembly C. The reel assembly C is provided with two opposite slits C1 along its axial direction, and the two ends of the sliding lock piece J can be inserted into the two slits C1 of the reel assembly C.
[0028] When the door lock is in the unlocked state, the door handle can rotate with the square tube M, and the fixed cam L also rotates accordingly. At this time, the square tube M will drive the lock tongue 23 of the lock to perform a telescopic action to complete the door opening and closing. When the owner enters the room, the door lock can be locked by rotating the knob assembly 21 on the inner handle. If the key is not used outside the room, the door cannot be unlocked and opened. Specifically, when the knob assembly 21 on the inner handle is rotated, the safety rod E connected to the knob assembly also rotates accordingly. At the same time, the rotating cam K and the brake cam H connected to the safety rod also rotate together, while the square tube M sleeved on the outside of the safety rod does not rotate at this time, so the fixed cam L connected to the square tube remains stationary. When the rotating cam K is rotated by the safety rod E, for example, 90 degrees, the rotating cam K originally embedded in the fixed cam L can rotate an angle, and with the help of the inclined surface L4 on the edge of the fixed cam and the inclined surface K4 on the rotating cam, it moves outward from the bottom side L1 of the fixed cam to the boss L3 of the fixed cam. That is, the rotating cam K is separated from the nested state with the fixed cam L and pushed toward the outer handle. When the rotating cam K is pushed toward the outer handle, the sliding lock piece J disposed between the fixed cam L and the brake cam H is pushed toward the outer handle. At this time, since the brake cam H rotates synchronously with the rotation of the safety lever E by an angle, the sliding lock piece J moving toward the outer handle is just stuck in the groove H1 of the brake cam H, and pushes the brake cam into the inside of the reel assembly C. Since the reel assembly C is provided with two opposite slits C1 along its axial direction, the two ends of the sliding lock piece J entering the reel assembly C together with the brake cam H are just stuck in the two slits C1, so that the reel assembly C cannot rotate, the door lock is locked, and the door cannot be opened from the outside unless a key is used.
[0029] Figure 7 FIG. 1 is a partial schematic diagram showing the door lock structure shown in FIG. 1 for explaining automatic unlocking. Figure 8 yes Figure 2 The partial enlarged diagram of the exploded schematic diagram of the door lock structure shown in FIG. Figure 4 , Figure 7 and Figure 8 A large push spring F and a small push spring G are also provided on one side of the outer handle. The large push spring is used to push the sliding lock piece J toward the inner handle, and the small push spring is used to push the brake cam H toward the inner handle. When someone turns the inner handle in the door, the inner handle drives the square tube M to rotate together, and the fixed cam L also rotates accordingly. The lug K3 of the rotating cam K on the boss L3 of the fixed cam L, which was previously rotated to the bottom side L1 of the fixed cam L, is rotated back to the bottom side L1 of the fixed cam L, that is, the rotating cam K and the fixed cam L return to the nested state. The sliding lock piece J, which was previously pushed toward the outer handle by the rotating cam K, is pushed back to the unlocked state toward the inner handle under the action of the large push spring F, that is, the sliding lock piece J, which was previously stuck in the gap C1 on both sides of the reel assembly C, is pushed out of the reel assembly by the large push spring F. At the same time, the brake cam H, which was previously pushed into the reel assembly C by the sliding lock piece J, is also pushed out of the reel assembly by the small push spring G, and the latter can resume rotation, and the door lock is automatically unlocked. In other words, when someone walks out of the room, just turn the inner handle and the previously locked door will be automatically unlocked without any other actions. In this way, when the door is suddenly closed due to strong wind or other factors, the owner who has walked out of the room does not need to worry about being locked out even if he does not bring the key. At this time, he can open the door by just using the outer handle.
[0030] According to the automatic unlocking door lock structure of the utility model, when the door lock is in a locked state, all components of the door lock can be restored to an unlocked state by simply turning the inner handle, thereby achieving the purpose of automatic unlocking.
[0031] The above embodiments of the present invention are described only by way of examples. Without departing from the protection scope defined by the claims attached to the present invention, those skilled in the art may make various changes thereto, but these changes all fall within the scope of the present invention.
Claims
The locking cam is configured to lock the door in a manner that the locking cam and the locking cam and is adapted to engage the locking cam of the locking cam member when the door is unlocked.
2. The door lock structure according to claim 1, characterized in that: A circular through hole is provided in the center of the bottom side of the fixed cam.
3. The door lock structure according to claim 1, characterized in that: The diameter of the central circle of the rotating cam is smaller than the diameter of the fixed cam.
4. The door lock structure according to claim 1, characterized in that: The central through holes of the rotating cam and the braking cam are long and narrow through holes.
5. The door lock structure according to claim 1, characterized in that The utility model also comprises a reel assembly arranged on one side of the outer handle, and the brake cam can extend into the interior of the reel assembly.
6. The door lock structure according to claim 5, characterized in that: The reel assembly is provided with two opposite slits along its axial direction, and the two ends of the sliding locking sheet can be inserted into the two slits of the reel assembly.
7. The door lock structure according to claim 1, characterized in that It also includes a large top spring and a small top spring arranged on one side of the outer handle, wherein the large top spring is used to push the sliding lock sheet toward the inner handle, and the small top spring is used to push the brake cam toward the inner handle.
8. The door lock structure according to claim 1, characterized in that: The safety rod is arranged in a flat shape of a long strip.