A door lock with a stop latch

Abstract

The utility model discloses a door lock with stoppable locking tongue, including lock body shell, lock core, locking tongue and drive mechanism. The inside of lock body shell is equipped with the sliding slot, is equipped with first location clamping groove and second location clamping groove on the lateral wall. The lock core rotation setting is in the upper portion of lock body shell. The locking tongue sliding setting is in the sliding slot, and its top is equipped with the push slot and the elastic location component, and this elastic location component is configured as the optional first or second location clamping groove clamping. The drive mechanism includes the push piece connected in the push slot of the locking tongue of the lock core below the stretch. The lock core can drive the push piece swing, thereby drive the locking tongue along the sliding slot and make the elastic location component when the locking tongue moves to the stretch position and enter the first location clamping groove, enter the second location clamping groove when moving to the retracted position, realize the stable stop of locking tongue in two positions. The utility model effectively solved the problem of traditional locking tongue stop position not stable, easy to swing, significantly improved the reliability and operation feeling of door lock, and simple structure, cost controllable.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a door lock with a stoptable bolt. Background Technology

[0002] In the field of door locks, the switching between open and closed states of a common bolt (especially a beveled bolt driven by a handle or lock cylinder) mainly relies on the friction of a simple return spring within the lock body or the handle's pivot to maintain its position. This structure has significant shortcomings in practical use: the bolt lacks a clear and stable mechanical locking point when fully extended or retracted, making it prone to unexpected displacement due to door shaking, minor impacts, or spring fatigue. This can lead to incomplete locking, a loose door, or abnormal noises, affecting safety and user experience. Furthermore, when the door is open, users often need to continuously press down on the handle to keep the bolt retracted, which is inconvenient. Designs aimed at improving positioning often result in complex internal lock structures, more parts, and increased manufacturing costs. Therefore, it is necessary to provide a door lock structure that is relatively simple in structure, cost-effective, and ensures reliable locking of the bolt in both extended and retracted positions, preventing accidental movement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a door lock with a stop-locking bolt, which can achieve a stable mechanical lock on the bolt's extension and retraction endpoints by cooperating with the bolt's built-in elastic positioning and the double slots of the lock body. This effectively solves the problems of unstable bolt positioning and easy shaking in traditional locks, significantly improves the reliability and operation feel of the door lock, and has a simple structure and controllable cost.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A door lock with a lockable bolt, including The lock body shell has an internal sliding groove, and the side wall has a first positioning slot and a second positioning slot that are spaced apart and connected along the length of the sliding groove. The lock cylinder is rotatably mounted on the upper part of the lock body shell; The locking tongue is slidably disposed within the slide groove, and the top of the locking tongue is provided with a slot and an elastic positioning component; the elastic positioning component is configured to selectively engage with the first positioning slot or the second positioning slot; The drive mechanism includes a lever connected below the lock cylinder, the lever extending into a slot in the bolt; Rotating the lock cylinder causes the lever to swing, thereby driving the bolt to slide along the slide groove. The elastic positioning component engages with the first positioning slot when the bolt moves to the extended position and with the second positioning slot when the bolt moves to the retracted position, thus achieving stable stopping of the bolt in two positions.

[0005] A door lock with a stoptable bolt according to an embodiment of this utility model has at least the following beneficial effects: This solution constructs an internal mechanical positioning system through the coordinated design of a double positioning groove inside the lock body and an elastic positioning component at the top of the bolt. When the bolt moves to the end of its travel, the system can automatically engage and lock, providing a clear and stable physical stop point for the bolt's extension and retraction states. This fundamentally eliminates accidental bolt displacement caused by vibration or inertia, ensuring the tightness of the door's closing and the stability of its open state. This design highly integrates the positioning function, does not rely on complex external mechanisms, and significantly improves the reliability of the door lock and the user's sense of certainty in operation while maintaining the compactness of the overall structure and the simplicity of the manufacturing process. It has high practical value and market potential.

[0006] According to some embodiments of the present invention, the groove is provided on both sides of the oscillation direction of the swivel plate with a first inclined surface that cooperates with the oscillation of the swivel plate.

[0007] The benefits are that the design of the first inclined plane optimizes the force transmission path between the lever and the slot, making the driving process smoother and more fluid. It effectively reduces the hard impact and friction loss between moving parts, which not only improves the operating feel but also helps to extend the overall service life of the lock and enhances the reliability of the mechanism.

[0008] According to some embodiments of the present invention, the elastic positioning component includes a positioning spring and a pressure spring that provides elastic force to the positioning spring.

[0009] The advantage is that the combination of a positioning spring and a pressure spring to form an elastic positioning component provides a rapid-response and reliable elastic engagement mechanism. This structure utilizes the continuous elastic force of the spring to ensure that the positioning spring and the slot maintain a stable contact pressure, thereby achieving instantaneous and effective engagement and disengagement actions, ensuring the sensitivity and durability of the positioning function.

[0010] According to some embodiments of the present invention, the bottom of the groove is provided with a mounting groove and a mounting hole arranged side by side, the positioning spring is disposed in the mounting groove, and the pressure spring is disposed in the mounting hole for pushing the positioning spring to move up and down along the mounting groove.

[0011] The advantages are that by integrating the positioning spring and the pressure spring into the mounting slot and mounting hole at the bottom of the latch, respectively, a high degree of integration and modular layout of the elastic positioning component is achieved. This design greatly saves space inside the latch, making the structure exceptionally compact, while simplifying the assembly process and improving production efficiency and the orderly management of parts.

[0012] According to some embodiments of the present invention, the side of the positioning spring is provided with an outwardly protruding engaging portion, which is used to engage with the first positioning slot or the second positioning slot.

[0013] The advantage is that the protruding engaging portion located on the side of the positioning spring forms a key contact point for mechanical interlocking with the positioning slot. This prominent design increases the effective engaging area, improves the strength and stability of single-point locking, and allows the locking tongue to resist greater external force interference when stationary, ensuring a firm and reliable positioning effect.

[0014] According to some embodiments of the present invention, the engaging portion is provided with second inclined surfaces on both sides.

[0015] The advantage is that a second ramp is provided on both sides of the engaging part, forming a guide ramp. This design allows the engaging part to smoothly transition when entering or leaving the positioning slot, significantly reducing the resistance and impact at the moment of engaging and disengaging, making the switching of the locking tongue state easier and less strenuous, and reducing wear.

[0016] According to some embodiments of the present invention, the first positioning slot is provided with a third inclined surface that cooperates with the second inclined surface on the side near the middle.

[0017] The advantage is that a third inclined surface is provided on the positioning slot to cooperate with the second inclined surface of the engaging part, forming a precise inclined guide pair. This cooperation further optimizes the docking path between the engaging part and the slot, making the engaging action more precise and smooth, and also enhancing the self-locking stability of the locking tongue in the stationary state through the wedging effect between the inclined surfaces, effectively preventing accidental disengagement.

[0018] According to some embodiments of this utility model, a square steel is inserted through the middle of the lock cylinder to connect with the front and rear handles.

[0019] The advantages are: by connecting the lock cylinder to the front and rear handles with square steel, a standard and efficient torque transmission link is established. This structure ensures that the rotational force applied by the user through the handles can reliably and without loss drive the lock cylinder to rotate, which is the foundation for convenient operation of the door lock from both inside and outside. It also offers good compatibility and stable transmission.

[0020] According to some embodiments of this utility model, the lock body shell is provided with cover plates on the front and rear sides.

[0021] The advantages are that the front and rear covers of the lock body form a complete protective shell. The covers effectively isolate the internal precision mechanisms from external environmental factors such as dust and moisture, prevent foreign objects from entering and causing jamming, and at the same time improve the overall aesthetics and security of the product, making installation and maintenance easier.

[0022] According to some embodiments of the present invention, the lock body shell is provided with a side plate on one side of the lock tongue, and the side plate is provided with a square hole for accommodating the lock tongue to enter and exit.

[0023] The advantage is that the side plate with square holes serves as the interface between the bolt and the door frame, and the square holes provide precise guidance and support for the bolt's extension. This ensures that the bolt can be accurately and smoothly inserted into the corresponding position on the door frame to complete the locking action, while also enhancing the support of the bolt's extended end and improving the overall structural strength in the locked state.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of the central locking shell; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 A schematic diagram of the components inside the lock body housing; Figure 5 for Figure 4 A schematic diagram of the locking tongue.

[0027] Reference numerals: lock body shell 100, slide groove 110, first positioning slot 120, second positioning slot 130, lock cylinder 140, lock tongue 150, sprocket groove 160, sprocket 170, first bevel 180, positioning spring 190, mounting groove 200, mounting hole 210, engaging part 220, second bevel 230, third bevel 240, square steel 250, handle 260, cover plate 270, side plate 280. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is for reference. Figures 1-5 A door lock with a stoptable bolt is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0033] like Figures 1-5As shown, this lock with a stoptable bolt mainly consists of a lock body 100, a lock cylinder 140, a bolt 150, and a drive mechanism. The lock body 100 serves as the basic frame, with a sliding groove 110 machined inside for the bolt 150 to slide. Two positioning slots, a first positioning slot 120 and a second positioning slot 130, are spaced apart along the length of the sliding groove 110 on the side wall. These two slots correspond to the end positions of the bolt 150 when it is fully extended and fully retracted, respectively. The lock cylinder 140 is rotatably mounted in the upper region of the lock body 100, constituting the core control component of the lock. The bolt 150 is slidably assembled within the sliding groove 110, and its top is designed with a slot 160 and a set of elastic positioning components. These elastic positioning components are designed to selectively engage with either the first positioning slot 120 or the second positioning slot 130 depending on the position of the bolt 150. The drive mechanism includes a lever 170 connected below the lock cylinder 140, the lower end of which extends into a slot 160 at the top of the bolt 150. When the lock cylinder 140 is rotated, the lever 170 swings, driving the bolt 150 to slide back and forth along the slide groove 110 via the slot 160. During this process, the elastic positioning component moves with the bolt 150, automatically engaging in the first positioning slot 120 when the bolt 150 reaches its extended limit position, and automatically engaging in the second positioning slot 130 when the bolt 150 reaches its retracted limit position. This ensures the bolt 150 remains stably stationary at two key positions, guaranteeing the lock's stability in both closed and open states.

[0034] In a further embodiment, the inner wall of the top groove 160 of the latch 150, i.e., both sides of the swing direction of the lever 170, is specially machined with first inclined surfaces 180. These first inclined surfaces 180 cooperate with the end of the swinging lever 170 to optimize the direction of force transmission, making the driving action of the lever 170 on the latch 150 smoother, significantly reducing rigid collisions and frictional resistance between components. This not only makes the operation of opening and closing the door lighter and smoother, but also helps to reduce the wear of moving parts, thereby extending the overall service life of the door lock.

[0035] The specific structure of the elastic positioning component includes a positioning spring 190 and a pressure spring (not shown in the figure) that provides elastic force to it. The combination of the positioning spring 190 and the pressure spring creates an efficient elastic response mechanism. The continuous elastic force provided by the pressure spring ensures that the positioning spring 190 always has a tendency to engage outwards and can maintain a stable contact pressure with the positioning slot. This allows the positioning spring 190 to quickly and reliably engage with the corresponding slot when the locking tongue 150 reaches its end position; and when movement is required, it can clearly disengage under the action of linear driving force, ensuring that the positioning function is both sensitive and durablely reliable.

[0036] To achieve a compact structure, such as Figure 5 As shown, a mounting groove 200 and a mounting hole 210 are formed side by side at the bottom of the top slot 160 of the latch 150. A positioning spring 190 is placed within the mounting groove 200, while a pressure spring is installed in the mounting hole 210. The upper end of the pressure spring pushes against the positioning spring 190, allowing it to move up and down along the guide of the mounting groove 200. This design, which directly integrates the elastic positioning element into the slot 160 area of ​​the latch 150 body, achieves a high degree of functional module concentration, greatly saves space inside the latch 150 and lock body, resulting in a very compact overall structure. It also simplifies the assembly process, facilitating production and maintenance.

[0037] To make the card-closing action more effective, such as Figure 3 As shown, a protruding engaging portion 220 is machined on the side of the positioning spring 190. This protruding engaging portion 220 is the direct functional part that achieves mechanical interlocking with the positioning slot on the lock body shell 100. Its protruding structure increases the contact area with the slot wall, thereby improving the mechanical strength of the engaging point and the stability after locking, so that the bolt 150 can better resist external impacts or vibrations after stopping, ensuring that the bolt 150 will not easily undergo accidental displacement.

[0038] To improve the smoothness of the engagement and disengagement process, second inclined surfaces 230 are machined on both sides of the engagement portion 220. These second inclined surfaces 230 constitute a guide structure. When the locking tongue 150 moves to allow the engagement portion 220 to enter or exit the positioning slot, the second inclined surfaces 230 can guide it to a smooth transition, transforming what might otherwise be a direct collision or significant friction into sliding along the inclined surfaces. This significantly reduces resistance and impact during state transitions, making operation easier and also reducing wear between the engagement portion 220 and the edge of the slot.

[0039] To ensure precise alignment with the guide structure of the engaging part 220, a corresponding third inclined surface 240 is machined on one side wall of the first positioning groove 120 near the center of the slide groove 110. This third inclined surface 240, together with the second inclined surface 230 on the engaging part 220, forms a precise inclined guide pair. This fit not only further optimizes the movement trajectory of the engaging part 220 when it engages with the first positioning groove 120, making its alignment more accurate and its movement smoother, but also, through the wedge-tightening effect of the inclined surface, generates a self-reinforcing locking force after the latch 150 is fully extended, greatly enhancing the latch 150's resistance to external force disengagement in the closed and locked state, thus improving safety.

[0040] like Figure 1As shown, a square steel bar 250 is installed through the middle of the lock cylinder 140, and its two ends are connected to the handles 260 on the inside and outside of the door, respectively. The square steel bar 250 serves as a standard transmission component, establishing an efficient torque transmission link between the handles 260 and the lock cylinder 140. When the user rotates the handle 260 on either side, the rotational force reliably drives the lock cylinder 140 to rotate synchronously via the square steel bar 250, ensuring convenient and consistent operation from both inside and outside the door, with direct and stable transmission.

[0041] To protect the internal mechanisms and enhance the appearance, cover plates 270 are installed on the front and rear sides of the lock body shell 100. The front and rear cover plates 270 together form a complete protective shell, enclosing precision components such as the lock cylinder 140, bolt 150, and drive mechanism. This shell effectively prevents dust, moisture, and small foreign objects from entering the lock body, preventing rust or jamming caused by these factors. It also improves the overall aesthetics and security of the product, and facilitates transportation and installation.

[0042] It is worth mentioning that, such as Figure 2 As shown, a side plate 280 is also installed on the side of the lock body 100 corresponding to the extension direction of the bolt 150. This side plate 280 has square holes that match the cross-sectional shape of the bolt 150. This side plate 280 is typically fixed to the door frame, and its square holes provide a precise guide channel for the extension and retraction of the bolt 150. It ensures that the bolt 150 can accurately insert into the corresponding position on the door frame when the door is closed, completing the locking action, and also provides good support and limiting for the extended bolt 150, enhancing the overall rigidity and stability of the door in the locked state.

[0043] When the door needs to be closed and locked, turn the handle 260 (or the key), which drives the lock cylinder 140 to rotate via the square steel 250. The lock cylinder 140 then drives the lever 170 to swing. The lever 170, through its end engaging with the first inclined surface 180 within the lever groove 160, pushes the bolt 150 to slide outwards. When the bolt 150 reaches its fully extended position, the positioning spring 190 at its top, under the action of the pressure spring, smoothly engages the locking part 220 on its side (guided by the second inclined surface 230) with the first positioning groove 120 on the lock body 100 (guided by the third inclined surface 240), securing the bolt 150 and locking the door. When the door needs to be opened, turn the handle 260 in the opposite direction, causing the drive chain to move in the opposite direction, and the lever 170 pulls the bolt 150 back. Initially, the drive needs to overcome the spring force to disengage the engaging part 220 from the first positioning slot 120. Then, the latch 150 continues to retract until it is fully retracted. At this point, the engaging part 220 is engaged in the second positioning slot 130 under the action of the spring, and the latch 150 is once again stably locked in the retracted position, allowing the door to be opened freely.

[0044] This utility model has the following beneficial effects: 1. Precise and reliable positioning: The elastic positioning component (positioning spring 190 and compression spring) set on the bolt 150 is mechanically engaged with the double positioning slot on the lock body shell 100, providing a clear and stable physical lock for the bolt 150 at both the extended and retracted ends, effectively preventing accidental displacement of the bolt 150 due to vibration or external force, and ensuring the stability of the door lock status.

[0045] 2. Clear operating feel: When the locking tongue 150 reaches the end position, the elastic positioning component will snap into the slot, producing a clear "click" sound and tactile feedback, allowing the user to clearly perceive that the locking tongue 150 is in place.

[0046] 3. Simple and compact structure: The positioning spring 190 and the pressure spring are integrated in the slot 160 area at the top of the latch 150, making full use of the existing structural space. There is no need to add complex levers or additional independent positioning modules in the lock body shell 100. The number of parts is small, the assembly is simple, and it is conducive to reducing production costs.

[0047] 4. Smooth and durable operation: Through the design of multiple inclined surfaces, such as the first inclined surface 180 on both sides of the slot 160, the second inclined surface 230 on both sides of the engaging part 220, and the third inclined surface 240 on the positioning slot, the friction and impact during the sliding of the locking tongue 150 and the engaging / disengaging process of the positioning component are significantly reduced, making operation easier, running more smoothly, and improving the service life of the components.

[0048] 5. High versatility: The core locking tongue 150 and positioning mechanism of this utility model can be easily adapted to the existing standard mortise lock body structure, requiring minimal changes to the overall lock design, and are easy to promote and apply.

[0049] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A door lock with a stoptable bolt, characterized in that, include: The lock body shell (100) has a sliding groove (110) inside, and a first positioning slot (120) and a second positioning slot (130) that are spaced apart and connected along the length direction of the sliding groove (110) on the side wall. The lock cylinder (140) is rotatably mounted on the upper part of the lock body shell (100); The locking tongue (150) is slidably disposed in the slide groove (110), and the top of the locking tongue (150) is provided with a push groove (160) and an elastic positioning component; the elastic positioning component is configured to selectively engage with the first positioning slot (120) or the second positioning slot (130); The drive mechanism includes a paddle (170) connected below the lock cylinder (140), the paddle (170) extending into a slot (160) of the bolt (150); Rotating the lock cylinder (140) can cause the paddle (170) to swing, thereby driving the bolt (150) to slide along the slide groove (110) and causing the elastic positioning component to engage with the first positioning slot (120) when the bolt (150) moves to the extended position, and engage with the second positioning slot (130) when the bolt (150) moves to the retracted position, thereby achieving stable stopping of the bolt (150) in two positions.

2. A door lock with a stoptable bolt according to claim 1, characterized in that, The groove (160) is located on both sides of the swing direction of the lever (170) and has a first inclined surface (180) that cooperates with the swing of the lever (170).

3. A door lock with a stoptable bolt according to claim 1, characterized in that, The elastic positioning component includes a positioning spring (190) and a pressure spring that provides elastic force to the positioning spring (190).

4. A door lock with a stoptable bolt according to claim 3, characterized in that, The bottom of the groove (160) is provided with a mounting groove (200) and a mounting hole (210) arranged side by side. The positioning spring (190) is disposed in the mounting groove (200), and the pressure spring is disposed in the mounting hole (210) to push the positioning spring (190) to move up and down along the mounting groove (200).

5. A door lock with a stoptable bolt according to claim 4, characterized in that, The positioning spring (190) has an outwardly protruding engaging portion (220) on its side, which is used to engage with the first positioning slot (120) or the second positioning slot (130).

6. A door lock with a stoptable bolt according to claim 5, characterized in that, The engaging part (220) has a second inclined surface (230) on both sides.

7. A door lock with a stoptable bolt according to claim 6, characterized in that, The first positioning slot (120) has a third inclined surface (240) on the middle side that cooperates with the second inclined surface (230).

8. A door lock with a stoptable bolt according to claim 1, characterized in that, The lock cylinder (140) has a square steel (250) passing through its center and is connected to the front and rear handles (260).

9. A door lock with a stoptable bolt according to claim 1, characterized in that, The lock body shell (100) is provided with cover plates (270) on the front and rear sides.

10. A door lock with a stoptable bolt according to claim 1, characterized in that, The lock body shell (100) has a side plate (280) on one side of the lock tongue (150), and the side plate (280) has a square hole for accommodating the lock tongue (150) to enter and exit.

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