Clamping structure of lock and lever handle built-in lock mechanism

Abstract

The utility model discloses a clamping structure of a lock and a handle built-in lock mechanism, comprising a built-in lock slide bar provided with a first clamping structure; the handle shell is provided with a sliding cavity, the built-in lock sliding rod is arranged in the sliding cavity in a sliding mode, and a second clamping structure corresponding to the first clamping structure is arranged in the sliding cavity; the first clamping structure and the second clamping structure protrude oppositely, the first clamping structure and the built-in lock sliding rod are integrally formed, the first clamping structure has deformation potential energy, and two slope surfaces are symmetrically arranged on the second clamping structure so that when the first clamping structure makes contact with the second clamping structure, the first clamping structure and the built-in lock sliding rod can be clamped. According to the built-in lock, the first clamping structure is matched with the second clamping structure, the problem of mechanical fatigue of a traditional elastic piece or spring structure is solved, the design is relatively simple, parts are not prone to being lost in the assembling process, the built-in lock sliding rod can automatically slide in place, and the built-in lock sliding rod is not prone to being damaged. The problem that the locking effect cannot be achieved due to the fact that a user cannot know specific clamping points is solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to door locks, and in particular to a lock locking structure and a handle concealed lock mechanism. Background Art

[0002] In the modern home security landscape, door locks serve as the first line of defense for protecting personal living spaces. The rationality and durability of their design directly impact users' sense of security and quality of life. The anti-lock mechanism, a crucial component in enhancing the internal security of a door lock, must be designed not only for ease of use but also for structural stability and durability.

[0003] Traditional door lock anti-lock mechanisms often use a knob-type design, directly exposed on the lock body. This not only affects the overall aesthetics of the door lock, but more importantly, such designs are easily damaged by children's accidental touch or external environmental factors (such as scratches and impacts), thereby reducing the door lock's security. To improve this situation, in recent years, concealed lock designs have emerged on the market that integrate the anti-lock mechanism into the back of the handle, such as the ecological door lock with a hidden anti-lock structure disclosed in patent CN220226497U. This innovative design effectively prevents external factors from directly affecting the anti-lock mechanism, significantly improving safety and aesthetics.

[0004] However, existing built-in anti-locking mechanisms still have some shortcomings in the design of the locking structure. Specifically, many designs rely on shrapnel or springs in conjunction with consumable parts such as steel balls to achieve positioning and feedback of the unlocked and locked states. Although these designs can provide users with clear tactile feedback to a certain extent, they also have significant limitations: the elastic life of the shrapnel structure is limited and it is prone to fatigue fracture under long-term use; and although the combination of springs and steel balls is more flexible, the steel balls, as independent components, are easily lost during the assembly process, which increases production costs and difficulty, and also affects product reliability. Utility Model Content

[0005] In order to overcome at least one of the above-mentioned defects of the prior art, the present invention provides a lock retaining structure and a handle concealed lock mechanism, which can solve the problem of short service life of the limiting member.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] A locking structure of a lock comprises: a concealed lock slide bar, on which a first locking structure is provided; a handle housing, wherein the handle housing has a sliding cavity, the concealed lock slide bar is slidably arranged in the sliding cavity, and a second locking structure is provided in the sliding cavity corresponding to the first locking structure; wherein the first locking structure and the second locking structure protrude toward each other, the first locking structure and the concealed lock slide bar are integrally formed, and the first locking structure has deformation potential energy, and the second locking structure is symmetrically provided with two slopes, so that when the first locking structure contacts the second locking structure, the first locking structure has a tendency to slide down along the two slopes of the second locking structure.

[0008] By adopting the above solution, the mechanical fatigue problem of traditional spring structures is reduced. The design of the first locking structure and the second locking structure protruding toward each other is relatively simple, and it is not easy to lose parts during assembly. The assembly process may be more intuitive and quick. At the same time, it has a tendency to slide down the slope, so that the hidden lock slide bar can automatically slide into place, avoiding the problem that the user cannot know the specific locking position and cannot achieve the locking effect, making the state of the anti-locking mechanism clearer, and there is no situation between the unlocking or locking states.

[0009] Furthermore, a transition surface is provided between the two slope surfaces on the second locking structure. When the first locking structure contacts the transition surface, the first locking structure has a movement tendency of sliding from the transition surface to the slope surfaces on both sides.

[0010] By adopting this solution, the presence of the transition surface ensures that the first latching structure will first pass over the transition surface when sliding from one slope to the other. This process provides the user with more specific and clear tactile feedback, helping them accurately perceive the state changes of the anti-locking mechanism. In particular, the transition surface design provides the user with a sense of "critical point" during the transition from unlocked to locked state, or vice versa, enhancing controllability and accuracy of operation.

[0011] Furthermore, the transition surface is a curved surface.

[0012] This solution not only reduces the impact and noise caused by sudden changes in direction, but also improves the smoothness and comfort of sliding. Compared with straight or sharp transition surfaces, the curved transition surface makes contact with the first locking structure more uniform and gentle during sliding. This helps reduce friction and wear between the two, thereby extending the service life of the first and second locking structures.

[0013] Furthermore, the transition surface is two inclined surfaces with an obtuse angle, and the slope of the inclined surface is smaller than the slope of the slope surface.

[0014] By adopting the above solution, when the first locking structure slides from one slope across the transition surface to the other slope, the user will feel a noticeable change in tactile sensation due to the change in the slope of the transition surface. This change can serve as a signal that the operation is complete, helping the user confirm that the anti-locking mechanism has reached the predetermined position.

[0015] Furthermore, the sliding cavity and the second locking structure are integrally formed.

[0016] By adopting the above solution, the one-piece design reduces the number of connection points between components, thereby reducing the risk of structural failure caused by loose or damaged connectors. This integrity improves the strength and stability of the entire first latch structure.

[0017] Furthermore, an opening is provided on the back side of the handle housing, and the concealed lock slide rod is provided with a toggle block extending from the opening. When the toggle block is located at one end of the opening, the first locking structure is located at the bottom of one slope of the second locking structure; when the toggle block is located at the other end of the opening, the first locking structure is located at the bottom of another slope of the second locking structure.

[0018] By adopting the above solution, the anti-locking mechanism can be easily locked and unlocked by toggling the toggle block on the back side of the handle housing.

[0019] Furthermore, a hollow portion is provided in the center of the concealed lock slide rod, a deformable plate body is provided in the hollow portion, and the first locking structure is provided on the plate body.

[0020] By adopting the above solution, the hollow part in the center of the hidden lock slide rod not only reduces the weight of the slide rod, but also provides space for the arrangement of its internal structure. The plate body can be deformed, thereby changing the position or state of the first locking structure, thereby realizing the locking and unlocking functions of the anti-locking mechanism.

[0021] Furthermore, the plate body is arranged along the sliding direction of the hidden lock sliding rod.

[0022] By adopting the above solution, the space inside the hidden lock slide bar can be utilized more effectively.

[0023] Furthermore, a deformation gap is reserved between the side surface of the plate body opposite to the first locking structure and the cavity wall of the sliding cavity.

[0024] By adopting the above solution, the presence of the deformation gap allows the plate to deform when subjected to external force without being hindered by the sliding cavity wall. This deformation is the key to the plate achieving its locking or unlocking function.

[0025] A handle concealed lock mechanism includes an unlocking rod, a drive sleeve, an anti-lock push rod, a lock and a lock positioning structure. The concealed lock slide rod slides to drive the drive sleeve to rotate. The drive sleeve surface is provided with an inclined surface for pushing the anti-lock push rod to insert into the lock, so that the handle housing and the lock remain relatively fixed to complete the anti-locking. One end of the unlocking rod is connected to the drive sleeve so that the drive sleeve rotates to unlock.

[0026] By adopting the above scheme, the driving sleeve can be driven by the sliding of the hidden lock slide rod, thereby controlling the reverse locking of the lock, and the reverse locking can be unlocked by manipulating the unlocking rod. In addition, the service life is long and the operation is relatively simple.

[0027] In summary, the locking structure and handle concealed lock mechanism provided by the present invention have the following technical effects:

[0028] 1. Improved service life: Compared to traditional designs with shrapnel or springs combined with steel balls and other vulnerable parts, the opposing protruding snap-fit structure reduces mechanical fatigue. This design does not rely on the long-term deformation of the elastic element to maintain its state, thus extending its service life and reducing the risk of performance degradation or damage due to long-term use.

[0029] 2. The design of the first and second latching structures is relatively simple and stable, and is not easily disturbed or damaged by external factors. This design improves the overall stability of the latching position, allowing the lock to better maintain its locked state when subjected to external forces;

[0030] 3. Because the first and second latching structures are integral, without easily lost independent parts like steel balls, the assembly process is more intuitive and faster. This reduces production costs, improves production efficiency, and also reduces quality issues caused by assembly errors or missing parts.

[0031] 4. When the first locking structure contacts the second locking structure, it automatically slides down along the two slopes of the second locking structure to a stable position. This design provides users with clear engagement feedback during use. Users no longer need to worry about poor locking performance due to an inability to accurately determine the engagement position, thereby improving user convenience and satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the assembly structure of the handle concealed lock mechanism of an embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of a partially exploded structure of a handle concealed lock mechanism according to an embodiment of the utility model;

[0034] Figure 3This is a schematic cross-sectional view of the handle concealed lock mechanism of an embodiment of the present utility model;

[0035] Figure 4 for Figure 3 Enlarged view of area A in the middle;

[0036] Figure 5 This is a schematic diagram of the structure of the concealed lock slide bar according to an embodiment of the utility model;

[0037] Figure 6 This is a schematic diagram of the handle housing structure of an embodiment of the utility model;

[0038] Figure 7 This is a schematic structural diagram of the handle concealed lock mechanism of an embodiment of the utility model.

[0039] Among them, the meanings of the figure marks are as follows: 1. Concealed lock slide bar; 11. First locking structure; 12. Toggle block; 13. Hollow part; 14. Plate body; 2. Handle shell; 21. Sliding cavity; 22. Second locking structure; 221. Slope; 222. Transition surface; 23. Opening; 24. Deformation gap; 3. Unlocking rod; 31. Keyhole; 4. Drive sleeve; 5. Handle cover; 6. Drive sleeve; 7. Anti-lock push rod; 71. Spring; 8. Lock; 81. Locking hole; 9. Inner handle head; 91. Guide groove. DETAILED DESCRIPTION

[0040] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0044] Example 1 of the present utility model is shown in FIG. Figures 1-6 As shown, a locking structure for a lock is disclosed, including a concealed lock slide bar 1 and a handle housing 2, wherein the concealed lock slide bar 1 is provided with a first locking structure 11, the handle housing 2 has a sliding cavity 21, the concealed lock slide bar 1 is slidably arranged in the sliding cavity 21, and a second locking structure 22 is provided in the sliding cavity 21 corresponding to the first locking structure 11; wherein the first locking structure 11 and the second locking structure 22 protrude toward each other, the first locking structure 11 and the concealed lock slide bar 1 are integrally formed, and the first locking structure 11 has deformation potential energy, and the first locking structure 11 is symmetrically provided with two slopes 221, so that when the first locking structure 11 and the second locking structure 22 come into contact, the first locking structure 11 has a tendency to slide down along the two slopes 221 of the second locking structure 22. In this embodiment 1, the first locking structure 11 is an outwardly protruding arched protrusion, and the second locking structure 22 in the sliding cavity 21 is a sloped protrusion. By adopting the combination of arched protrusions and sloped protrusions, the mechanical fatigue problem of traditional spring structures is reduced. The design of the sloped protrusions and arched protrusions is relatively simple, and it is not easy to lose parts during assembly. The assembly process may be more intuitive and quick. At the same time, it has a tendency to slide down the slope 221, so that the hidden lock slide bar 1 can automatically slide into place, avoiding the problem that the user cannot know the specific locking position and cannot achieve the locking effect, making the state of the anti-locking mechanism clearer, and there is no situation between the unlocking or locking states.

[0045] In one embodiment, a transition surface 222 is provided between the two sloped surfaces 221 of the second latching structure 22. When the first latching structure 11 contacts the transition surface 222, the first latching structure 11 tends to slide from the transition surface 222 to the sloped surfaces 221 on either side. The presence of the transition surface 222 ensures that the first latching structure 11 first passes over the transition surface 222 when sliding from one slope 221 to the other. This process provides the user with more distinct and clear tactile feedback, helping them accurately perceive the state changes of the anti-locking mechanism. Optionally, the transition surface 222 is curved. This has the advantages of reducing the impact and noise caused by sudden changes in direction and improving the smoothness and comfort of sliding. Compared with straight or sharp transition surfaces 222, the curved transition surface 222 provides a more uniform and gentle contact with the first latching structure 11 during sliding, which helps reduce friction and wear between the two, thereby extending the service life of the latching structure. Optionally, the transition surface 222 comprises two obtusely angled inclined surfaces, wherein the slope of the inclined surfaces is less than the slope of the sloped surface 221. When the first latching structure 11 slides from the sloped surface 221 on one side across the transition surface 222 to the sloped surface 221 on the other side, the user will experience a noticeable change in tactile feel due to the change in the slope of the transition surface 222. This change can serve as a signal that the operation is complete, helping the user confirm that the anti-locking mechanism has reached the predetermined position. Alternatively, the transition surface 222 can be a flat surface, such that the flat surface and the two sloped surfaces 221 form a trapezoidal structure. It should be noted that the sliding length of the first latching structure 11 on the flat surface is less than the length on the sloped surface 221, to prevent the protrusion from remaining on the flat surface for an extended period of time.

[0046] Preferably, the concealed lock slide bar 1 is integrally formed with the first retaining structure 11, and the sliding cavity 21 is integrally formed with the second retaining structure 22. This integral design reduces the number of connection points between components, thereby reducing the risk of structural failure due to loose or damaged connectors. This integrity enhances the strength and stability of the entire first retaining structure 11. In other embodiments, the concealed lock slide bar 1 and the first retaining structure 11 may be welded or adhesively bonded, and the sliding cavity 21 and the second retaining structure 22 may also be welded or adhesively bonded. This embodiment is not specifically limited to this.

[0047] In this embodiment 1, in order to make the structures of the first latching structure 11 and the second latching structure 22 clearer, a more detailed description is given. Specifically, an opening 23 is provided on the back side of the handle housing 2, and the concealed lock slide rod 1 is provided with a toggle block 12 extending from the opening 23. When the toggle block 12 is located at one end of the opening 23, the first latching structure 11 is located at the bottom of a slope 221 of the second latching structure 22. When the toggle block 12 is located at the other end of the opening 23, the first latching structure 11 is located at the bottom of another slope 221 of the second latching structure 22. According to this arrangement, the locking and unlocking of the anti-locking mechanism can be easily achieved by toggling the toggle block 12 on the back side of the handle housing 2.

[0048] In some embodiments, the concealed lock slide bar 1 has a central hollow portion 13, within which a deformable plate 14 is disposed. The first retaining structure 11 is mounted on the plate 14. Optionally, the plate 14 is positioned along the sliding direction of the concealed lock slide bar 1, with a deformable gap 24 reserved between the side of the plate 14 opposite the first retaining structure 11 and the wall of the sliding cavity 21. In other embodiments, the plate 14 may be provided with elastically deformable space, without limiting the specific assembly structure.

[0049] It should be noted that the front of the handle housing 2 is also provided with a handle cover 5. When the handle cover 5 is opened, the concealed lock slide bar 1 can be replaced or removed. The concealed lock slide bar 1 slides closely against the handle's sliding cavity 21 to avoid affecting the unlocking effect of the concealed lock slider. Optionally, the concealed lock slider and the handle's sliding cavity 21 can be locked to limit the position by locking the cover, or other snap-fit structures can be used to restrict the sliding direction of the concealed lock slide bar 1, which is not specifically limited in this embodiment.

[0050] When in use, the user only needs to toggle the toggle block 12 to drive the hidden lock slide bar 1 to slide, thereby realizing the unlocking or locking action of the anti-locking mechanism. The utility model has a simple structure and a long service life and is not easy to be damaged.

[0051] The present invention also relates to a handle concealed lock mechanism, comprising an unlocking rod 3, an inner handle head 9, a driving sleeve 4, an anti-lock push rod 7, a lock 8 and a lock positioning structure, wherein the concealed lock slide bar 1 slides to drive the driving sleeve 4 to rotate, the driving sleeve 4 and the inner handle head 9 are both arranged in the handle housing, the surface of the driving sleeve 4 is provided with a slope 221, for pushing the anti-lock push rod 7 to insert into the locking hole 81 of the lock 8, so that the handle housing 2 and the lock 8 remain relatively fixed to complete the anti-locking, one end of the unlocking rod 3 is drive-connected to the driving sleeve 4, and the other end is provided with a keyhole 31, so that the driving sleeve 4 is driven to rotate and unlock by inserting a key into the keyhole 31, and the driving sleeve 4 can be driven by sliding the concealed lock slide bar 1 to control the anti-locking of the lock 8. With this arrangement, the anti-locking unlocking effect can be achieved by manipulating the unlocking rod 3, and the service life is good and the operation is relatively simple.

[0052] Preferably, the inner handle head 9 is further provided with a guide groove 91, and the anti-lock push rod 7 is slidably arranged in the guide groove 91 to achieve a stable sliding effect of the anti-lock push rod 7 during the anti-locking and unlocking process. In order to enable the anti-lock push rod 7 to reset, a spring 71 is provided between the anti-lock push rod 7 and one end of the guide groove 91. The spring 71 can provide a reset force for the anti-lock push rod 7, so that it always maintains the effect of abutting against the slope 221 on the drive sleeve 4, thereby achieving the movement of the anti-lock push rod 7. The drive sleeve 4 and the hidden lock slide rod 1 are engaged with teeth to convert the sliding force into the self-rotational force of the drive sleeve 4, thereby achieving the anti-locking effect and anti-locking and unlocking effect of the door body.

[0053] In summary, the locking structure and handle concealed lock mechanism provided by the present invention have the following technical effects:

[0054] 1. Improved service life: Compared to traditional designs with shrapnel or springs combined with steel balls and other vulnerable parts, the opposing protruding snap-fit structure reduces mechanical fatigue. This design does not rely on the long-term deformation of the elastic element to maintain its state, thus extending its service life and reducing the risk of performance degradation or damage due to long-term use.

[0055] 2. The design of the first latching structure 11 and the second latching structure 22 is relatively simple and stable, and is not easily disturbed or damaged by external factors. This design improves the overall stability of the latching structure, allowing the lock 8 to better maintain its locked state when subjected to external forces;

[0056] 3. Because the first retaining structure 11 and the second retaining structure 22 are integral structures, without easily lost independent parts such as steel balls, the assembly process is more intuitive and faster. This reduces production costs, improves production efficiency, and also reduces quality issues caused by assembly errors or missing parts.

[0057] 4. When the first locking structure 11 contacts the second locking structure 22, the first locking structure 11 automatically slides down along the two slopes 221 of the second locking structure 22 to a stable position. This design provides users with clear locking feedback during use. Users no longer need to worry about poor locking performance due to an inability to accurately determine the locking position, thereby improving user convenience and satisfaction.

[0058] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A locking structure of a lock, characterized in that: include: A concealed lock slide bar (1), wherein the concealed lock slide bar (1) is provided with a first latching structure (11); A handle housing (2), the handle housing (2) having a sliding cavity (21), the concealed lock slide rod (1) being slidably arranged in the sliding cavity (21), and a second latching structure (22) being arranged in the sliding cavity (21) corresponding to the first latching structure (11); The first latching structure (11) and the second latching structure (22) protrude toward each other, the first latching structure (11) and the concealed lock slide bar (1) are integrally formed, and the first latching structure (11) has deformation potential energy, and the second latching structure (22) is symmetrically provided with two slopes (221), so that when the first latching structure (11) contacts the second latching structure (22), the first latching structure (11) has a tendency to slide down along the two slopes (221) of the second latching structure (22).

2. The locking structure of a lock according to claim 1, characterized in that: A transition surface (222) is provided between the two slope surfaces (221) on the second locking structure (22); when the first locking structure (11) contacts the transition surface (222), the first locking structure (11) has a movement tendency of sliding from the transition surface (222) to the slope surfaces (221) on both sides.

3. The locking structure of a lock according to claim 2, characterized in that: The transition surface (222) is an arc-shaped surface.

4. The locking structure of a lock according to claim 2, characterized in that: The transition surface (222) is composed of two obtuse inclined surfaces, the slope of which is smaller than the slope of the slope surface (221).

5. The locking structure of a lock according to claim 1, characterized in that: The sliding cavity (21) and the second locking structure (22) are integrally formed.

6. The locking structure of a lock according to claim 1, characterized in that: An opening (23) is provided on the back side of the handle housing (2), and the concealed lock slide rod (1) is provided with a toggle block (12) extending from the opening (23); when the toggle block (12) is located at one end of the opening (23), the first latching structure (11) is located at the bottom of a slope (221) of the second latching structure (22); when the toggle block (12) is located at the other end of the opening (23), the first latching structure (11) is located at the bottom of another slope (221) of the second latching structure (22).

7. The locking structure of a lock according to claim 1, characterized in that: The center of the concealed lock slide bar (1) is provided with a hollow portion (13), a deformable plate body (14) is provided in the hollow portion (13), and the first locking structure (11) is provided on the plate body (14).

8. The locking structure of a lock according to claim 7, characterized in that: The plate body (14) is arranged along the sliding direction of the concealed lock slide rod (1).

9. The locking structure of a lock according to claim 7, characterized in that: A deformation gap (24) is reserved between the side surface of the plate body (14) opposite to the first locking structure (11) and the cavity wall of the sliding cavity (21).

10. A handle concealed lock mechanism, characterized in that: The invention comprises an unlocking rod (3), a driving sleeve (4), an anti-locking push rod (7), a lock (8) and a locking structure of a lock as described in any one of claims 1 to 9, wherein the concealed lock slide rod (1) slides to drive the driving sleeve (4) to rotate, and the surface of the driving sleeve (4) is provided with an inclined surface for pushing the anti-locking push rod (7) to be inserted into the lock (8), so that the handle housing (2) and the lock (8) remain relatively fixed to complete the anti-locking, and one end of the unlocking rod (3) is connected to the driving sleeve (4) so that the driving sleeve (4) rotates to unlock.

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