An indoor room door lock
Patent Information
- Application Number
- CN202522002250.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0004]然而，在采用抽拉式反锁件的户内房间门锁中，存在一个明显的技术缺陷：现有抽拉式反锁件在沿轴向移动过程中缺乏有效的限位结构，导致其轴向定位不稳定，这一问题容易造成反锁件发生意外滑动，影响反锁功能的可靠性、削弱门锁的私密保护效果
[0016]本实用新型提供的技术方案中，通过引入由两个限位凹槽、一个限位件及一个弹性件共同构成的限位结构，为核心的反锁功能带来了根本性的改进。其最显著的有益效果在于彻底解决了现有抽拉式反锁件因轴向定位不稳而导致的意外滑动问题，从而极大提升了反锁状态的可靠性与门锁的私密保护效能。该方案巧妙地利用限位件在弹性推力作用下与不同限位凹槽卡合的工作原理，为反锁件的轴向移动提供了两个明确、稳定且具有段落感的物理位置，分别精准对应解锁与反锁两种状态。这种设计不仅通过机械结构本身确保了反锁件在非人为操作时能够稳定保持在既定位置，防止因震动或误碰而意外解除或启用反锁，更使得用户在进行反锁或解锁操作时能通过清晰的手感反馈准确感知状态切换，增强了操作的确定性与用户体验。
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Figure CN224648312U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of locks, and more particularly to an indoor room door lock. Background Technology
[0002] The design focus of locks for interior rooms (such as bedrooms, bathrooms, and children's rooms) differs from that of the main entrance door lock. Since the main entrance door lock already possesses strong security features, interior door locks prioritize privacy protection. Therefore, these locks generally eliminate the function of unlocking from the outside with a key, instead employing a structure that combines an internal deadbolt and an external emergency release mechanism. This allows for convenient deadbolting from the inside while supporting release from the outside in emergencies.
[0003] Currently, common interior door locks typically include two handles, an inner and an outer one, a main shaft connecting the two handles, and a lock body that is linked to the main shaft. To open the door, turning either outer handle rotates the main shaft, which in turn retracts the bolt inside the lock body, completing the opening operation. On the inner side of the door, the user can deadbolt the door using a deadbolt (commonly pull-out or rotary types). When deadbolted, the outer handle cannot be turned, effectively preventing outside entry and ensuring the privacy of the space.
[0004] However, there is a significant technical defect in indoor door locks that use pull-out deadbolts: existing pull-out deadbolts lack an effective limiting structure during axial movement, resulting in unstable axial positioning. This problem can easily cause the deadbolt to slide unexpectedly, affecting the reliability of the deadbolt function and weakening the privacy protection effect of the door lock. Utility Model Content
[0005] The main purpose of this utility model is to provide an indoor room door lock, which aims to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, this utility model provides an indoor room door lock, comprising: an inner panel, an outer panel, an inner door handle rotatably connected to the inner panel, an outer door handle rotatably connected to the outer panel, a main shaft connecting the inner door handle and the outer door handle, and a lock body linked to the main shaft; An internal transmission component is fixedly installed on the inner door handle or the main shaft, and the internal transmission component is provided with a locking part; a deadbolt is slidably connected to the inner panel, and the deadbolt is configured to be able to move along its axial direction to selectively engage or disengage with the locking part, thereby restricting or releasing the rotation of the main shaft; A limiting structure is provided between the anti-locking member and the inner panel. The limiting structure includes two limiting grooves spaced apart along the axial direction, a limiting member that cooperates with the limiting grooves, and an elastic member for providing an elastic thrust to the limiting member. The limiting member is configured to be able to move in a direction perpendicular to the axial direction and selectively engage in either of the limiting grooves to achieve axial positioning.
[0007] Optionally, in one embodiment, two limiting grooves are disposed on the outer surface of the anti-locking member, the limiting member is slidably connected to the inner panel, and the inner panel has a receiving chamber for accommodating the limiting member and the elastic member; Alternatively, two limiting grooves are provided on the inner panel, the limiting member is slidably connected to the anti-locking member, and the anti-locking member has a receiving chamber for accommodating the limiting member and the elastic member.
[0008] Optionally, in one embodiment, the two limiting grooves correspond to the locked state position and the unlocked state position, respectively.
[0009] Optionally, in one embodiment, the contour of the limiting groove is configured such that when the limiting member is engaged therein, it provides a retaining force to prevent the anti-locking member from moving unintentionally; when the axial operating force applied to the anti-locking member is greater than the retaining force, the limiting member can overcome the thrust of the elastic member and disengage from the limiting groove, allowing the anti-locking member to move.
[0010] Optionally, in one embodiment, the contour of the limiting groove includes a guide ramp or guide surface, which is configured to guide the limiting member to smoothly slide into or out of the limiting groove when the anti-locking member is moved, and to provide a clear sense of tactile feedback.
[0011] Optionally, in one embodiment, the limiting member is a sphere; or, the limiting member is a shaft-like body, and the end of the limiting member that contacts the limiting groove is a spherical surface.
[0012] Optionally, in one embodiment, the elastic element is a helical spring, a butterfly spring, or an elastic gel.
[0013] Optionally, in one embodiment, the anti-locking member includes an operating part and a locking part, the operating part extending out of the outer surface of the inner panel, and the locking part being adapted to move along the axial direction with the operating part and selectively engage or disengage with the engaging part.
[0014] Optionally, in one embodiment, the engaging part is a slot or a tongue, and the locking part is a tongue or slot that cooperates with the engaging part.
[0015] Optionally, in one embodiment, the outer panel is provided with an emergency unlocking hole for moving the deadbolt from the outside of the door using a tool in an emergency, so that the deadbolt disengages from the engaging part.
[0016] The technical solution provided by this utility model fundamentally improves the core deadbolt function by introducing a limiting structure composed of two limiting grooves, a limiting member, and an elastic member. Its most significant benefit lies in completely solving the problem of accidental sliding caused by unstable axial positioning in existing pull-out deadbolts, thereby greatly improving the reliability of the deadbolt state and the privacy protection performance of the door lock. This solution cleverly utilizes the working principle of the limiting member engaging with different limiting grooves under elastic thrust, providing two clear, stable, and segmented physical positions for the axial movement of the deadbolt, precisely corresponding to the unlocking and deadbolt states respectively. This design not only ensures that the deadbolt remains stably in the predetermined position when not manually operated, preventing accidental unlocking or activation due to vibration or accidental contact, but also allows users to accurately perceive the state switch through clear tactile feedback when performing deadbolt or unlocking operations, enhancing the certainty of operation and user experience. Attached Figure Description
[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of the indoor room door lock of this utility model; Figure 2 This is a cross-sectional view of one embodiment of the indoor room door lock of this utility model; Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 for Figure 1 Schematic diagram of the internal transmission components, anti-locking components, and limiting structure; Figure 5 for Figure 4 A schematic diagram from another angle.
[0019] Among them, 11, inner panel; 12, outer panel; 121, emergency unlocking hole; 21, inner door handle; 22, outer door handle; 31, main shaft; 41, inner transmission component; 411, engaging part; 51, deadbolt; 511, operating part; 512, locking part; 513, extension part; 61, limiting structure; 611, limiting groove; 612, limiting component. Detailed Implementation
[0020] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.
[0021] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0022] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0023] like Figures 1 to 5 As shown, this utility model embodiment provides an indoor room door lock, including: an inner panel 11, an outer panel 12, an inner door handle 21 rotatably connected to the inner panel 11, an outer door handle 22 rotatably connected to the outer panel 12, a main shaft 31 (which can be a square shaft or other shaft used for transmission) connecting the inner door handle 21 and the outer door handle 22, and a lock body linked to the main shaft 31. An inner transmission component 41 is fixedly installed on the inner door handle 21 or the main shaft 31, and the inner transmission component 41 is provided with a locking part 411; a deadbolt 51 is slidably connected to the inner panel 11, and the deadbolt 51 is configured to be able to move along its axial direction to selectively engage or disengage with the locking part 411, thereby restricting or releasing the rotation of the main shaft 31. A limiting structure 61 is provided between the anti-locking member 51 and the inner panel 11. The limiting structure 61 includes two limiting grooves 611 spaced apart along the axial direction (corresponding to the anti-locking state position and the unlocking state position respectively), a limiting member 612 that cooperates with the limiting grooves 611, and an elastic member (not shown in the figure, the elastic member can be a helical spring, a butterfly spring or an elastic colloid, etc.) for providing elastic thrust to the limiting member 612. The limiting member 612 is configured to be able to move in a direction perpendicular to the axial direction and selectively engage in any limiting groove 611 to achieve axial positioning.
[0024] By introducing a limiting structure 61 consisting of two limiting grooves 611, a limiting element 612, and an elastic element, the core deadbolt function is fundamentally improved. Its most significant benefit lies in completely resolving the accidental sliding problem caused by unstable axial positioning of the existing pull-out deadbolt 51, thereby greatly improving the reliability of the deadbolt state and the privacy protection performance of the door lock. This solution cleverly utilizes the working principle of the limiting element 612 engaging with different limiting grooves 611 under elastic thrust, providing two clear, stable, and segmented physical positions for the axial movement of the deadbolt 51, precisely corresponding to the unlocking and deadbolt states respectively. This design not only ensures that the deadbolt 51 remains stably in its predetermined position when not manually operated, preventing accidental unlocking or activation due to vibration or accidental contact, but also allows users to accurately perceive state switching through clear tactile feedback during deadbolt or unlocking operations, enhancing the certainty of operation and user experience. Furthermore, the limiting structure 61 is ingeniously designed, with simple and reliable components, easy to assemble, and does not require significant changes to the overall layout of the door lock. While achieving excellent functionality, it also takes into account the feasibility of production and cost control, enabling the realization of an indoor door lock product with a stable structure, intuitive operation, and reliable performance.
[0025] Optionally, two limiting grooves 611 are provided on the outer surface of the anti-locking member 51, the limiting member 612 is slidably connected to the inner panel 11, and the inner panel 11 has a receiving cavity for accommodating the limiting member 612 and the elastic member; or, two limiting grooves 611 are provided on the inner panel 11, the limiting member 612 is slidably connected to the anti-locking member 51, and the anti-locking member 51 has a receiving cavity for accommodating the limiting member 612 and the elastic member.
[0026] The contour of the limiting groove 611 is configured such that when the limiting member 612 is engaged therein, it can provide a retaining force to prevent the anti-lock member 51 from moving accidentally; when the axial operating force applied to the anti-lock member 51 is greater than the retaining force, the limiting member 612 can overcome the thrust of the elastic member and disengage from the limiting groove 611, allowing the anti-lock member 51 to move.
[0027] In this embodiment, the contour of the limiting groove 611 includes a guide slope or a guide surface, which is configured such that when the anti-locking member 51 is moved, the guiding limiting member 612 smoothly slides into or out of the limiting groove 611, providing a clear sense of tactile feedback. Optionally, the limiting member 612 is a sphere; or, the limiting member 612 is an axle, with the end of the limiting member 612 that contacts the limiting groove 611 being a spherical surface.
[0028] Reference Figures 1 to 5 In this embodiment, the anti-locking member 51 includes an operating part 511, a locking part 512, and an extension part 513. The operating part 511 extends out of the outer surface of the inner panel 11, and the locking part 512 is adapted to move axially with the operating part 511 and selectively engage or disengage with the engaging part 411. Optionally, the engaging part 411 is a groove or a latch, and the locking part 512 is a latch or groove that cooperates with the engaging part 411.
[0029] Reference Figure 1 In this embodiment, the outer panel 12 is provided with an emergency unlocking hole 121, which is used to move the deadbolt 51 from the outside of the door by passing a tool through the emergency unlocking hole 121 in an emergency, so that the deadbolt 51 disengages from the engaging part 411. The extension part 513 is connected to the locking part 512 and is located on the side close to the emergency unlocking hole 121, so that the user can aim the tool at the extension part 513 of the deadbolt 51 to quickly release the deadbolt state.
[0030] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An indoor room door lock, comprising: The lock comprises an inner panel (11), an outer panel (12), an inner door handle (21) rotatably connected to the inner panel (11), an outer door handle (22) rotatably connected to the outer panel (12), a main shaft (31) connecting the inner door handle (21) and the outer door handle (22), and a lock body linked to the main shaft (31), characterized in that: An internal transmission component (41) is fixedly provided on the inner door handle (21) or the main shaft (31), and the internal transmission component (41) is provided with a locking part (411). A locking member (51) is slidably connected to the inner panel (11). The locking member (51) is configured to be able to move along its axial direction to selectively engage or disengage with the engaging part (411), thereby restricting or releasing the rotation of the main shaft (31). A limiting structure (61) is provided between the anti-locking member (51) and the inner panel (11). The limiting structure (61) includes two limiting grooves (611) spaced apart along the axial direction, a limiting member (612) cooperating with the limiting grooves (611), and an elastic member for providing an elastic thrust to the limiting member (612). The limiting member (612) is configured to be able to move in a direction perpendicular to the axial direction and selectively engage in either of the limiting grooves (611) to achieve axial positioning.
2. The indoor room door lock according to claim 1, characterized in that, Two limiting grooves (611) are provided on the outer surface of the anti-locking member (51), the limiting member (612) is slidably connected to the inner panel (11), and the inner panel (11) has a receiving chamber for accommodating the limiting member (612) and the elastic member; Alternatively, two limiting grooves (611) are provided on the inner panel (11), the limiting member (612) is slidably connected to the anti-locking member (51), and the anti-locking member (51) has a receiving chamber for accommodating the limiting member (612) and the elastic member.
3. The indoor room door lock according to claim 1, characterized in that, The two limiting grooves (611) correspond to the locked state position and the unlocked state position, respectively.
4. The indoor room door lock according to claim 1 or 2, characterized in that, The contour of the limiting groove (611) is configured such that when the limiting member (612) is engaged therein, it provides a retaining force to prevent the anti-locking member (51) from moving unintentionally; when the axial operating force applied to the anti-locking member (51) is greater than the retaining force, the limiting member (612) can overcome the thrust of the elastic member and disengage from the limiting groove (611), allowing the anti-locking member (51) to move.
5. The indoor room door lock according to claim 4, characterized in that, The contour of the limiting groove (611) includes a guide slope or guide surface, which is configured to guide the limiting member (612) to slide smoothly into or out of the limiting groove (611) when the anti-locking member (51) is moved, and to provide a clear sense of tactile feedback.
6. The indoor room door lock according to claim 5, characterized in that, The limiting member (612) is a sphere; or, the limiting member (612) is an axle, and the end of the limiting member (612) that contacts the limiting groove (611) is a spherical surface.
7. The indoor room door lock according to claim 1, characterized in that, The elastic element is a helical spring, a butterfly spring, or an elastic colloid.
8. The indoor room door lock according to claim 1, characterized in that, The anti-locking member (51) includes an operating part (511) and a locking part (512). The operating part (511) extends out of the outer surface of the inner panel (11), and the locking part (512) is adapted to move along the axial direction with the operating part (511) and selectively engage or disengage with the engaging part (411).
9. The indoor room door lock according to claim 8, characterized in that, The engaging part (411) is a slot or a tongue, and the locking part (512) is a tongue or slot that cooperates with the engaging part (411).
10. The indoor room door lock according to claim 1, characterized in that, The outer panel (12) is provided with an emergency unlocking hole (121) for moving the deadbolt (51) from the outside of the door with a tool in an emergency so that the deadbolt (51) disengages from the locking part (411).