Extremely narrow lock for interior of bathroom door
By integrating the handle with the lock housing, and combining the rotary ring and the coil spring, the complexity of bearing control in lever handle locks is solved, achieving simplified processing and reduced friction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 邱建光
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-14
AI Technical Summary
The inclusion of bearings in lever locks requires precise control over the dimensions and shape of the parts, which complicates the machining and installation process.
Design an ultra-narrow lock for the inside of a bathroom door, which adopts a structure in which the handle and lock housing are integrally connected. The combination of a rotary ring and a spiral spring simplifies the processing and installation process, and the lubrication ring reduces friction.
It reduces the difficulty of processing and assembly, improves the convenience of operation and durability, reduces friction, and ensures the stable operation of the lock.
Smart Images
Figure CN224120047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lever handle locks, and in particular to an ultra-narrow lock for use inside bathroom doors. Background Technology
[0002] Lever locks are widely used in a variety of scenarios, not only common in modern office buildings and apartment buildings, but also playing an important role in the daily lives of ordinary families. These locks are typically installed on room doors and bathroom doors to ensure the security and privacy of the space. There are many types of lever locks, the most common being split locks, integrated locks, and three-bar quick-release locks.
[0003] In lever lock design, a bearing is typically incorporated at the connection between the handle and the lock housing. This complicates the entire manufacturing and installation process. The bearing requires precise control over the dimensions and shape of the parts to ensure proper fit and operation. Furthermore, careful attention must be paid to the bearing's position and orientation during installation to prevent unnecessary wear or malfunction during use. Utility Model Content
[0004] The main purpose of this utility model is to provide an ultra-narrow lock for the interior of bathroom doors, which aims to solve the problem that the addition of bearings in lever locks requires precise control of the size and shape of the parts to ensure that they can fit and operate correctly, making the entire processing and installation process more complicated.
[0005] To achieve the above objectives, this utility model provides an ultra-narrow lock for the interior of a bathroom door, comprising:
[0006] A plate-shaped lock housing with a through hole, and a cylindrical structure surrounding the through hole on the inner side of the lock housing;
[0007] A handle component includes an integrally formed columnar head and a handle-shaped part that are connected to each other. A through groove runs through the middle of the columnar head, and the columnar head passes from the outer end of the cylindrical structure to the inner end.
[0008] A square shaft passes through the through slot and forms a circumferential fixation.
[0009] A rotating ring is sleeved on the free end of the cylindrical head and fixed in the circumferential direction, wherein the rotating ring is fixed in position in the length direction of the cylindrical head, and the rotating ring abuts against the cylindrical structure;
[0010] A helical spring is sleeved on the cylindrical structure and located between the lock housing and the rotating ring, wherein the helical spring engages the rotating ring with the lock housing and is used to reset the rotating ring.
[0011] Furthermore, a first lubricating ring is fitted onto the bottom of the cylindrical head, and the first lubricating ring is used to clamp the handle-shaped part and the lock housing.
[0012] Furthermore, a second lubricating ring is sandwiched between the cylindrical structure and the rotating ring.
[0013] Furthermore, a sliding plate is slidably disposed inside the handle-shaped part along the length direction, at least a portion of the sliding plate is exposed outside the handle-shaped part, a fixing pin is elastically supported inside the handle-shaped part in the thickness direction, a locking hole is provided on the lock housing corresponding to the fixing pin, and the sliding plate releases and presses down the fixing pin.
[0014] Furthermore, the portion of the hand-shaped part that protrudes from the handle-shaped part is a paddle, which is located on the side of the handle-shaped part near the lock housing.
[0015] Furthermore, a retaining ring is provided corresponding to the columnar head, and the retaining ring abuts the side of the rotary ring away from the lock housing in the thickness direction.
[0016] Furthermore, at least one limiting groove is provided on the outer periphery of the free end of the columnar head, and a protrusion is provided on the rotating ring corresponding to the limiting groove.
[0017] Furthermore, the handle is made of metal or polymer.
[0018] Furthermore, a handle cover is detachably provided on the side of the handle-shaped portion away from the lock housing.
[0019] Furthermore, two abutment seats are provided on the inner side of the lock case, and the two free ends of the helical spring abut against one of the abutment seats respectively.
[0020] This utility model provides an ultra-narrow lock for the interior of bathroom doors. The handle is an integral part installed in a through hole on the lock housing, which fits the cylindrical structure, thereby reducing the difficulty of processing and assembly. A rotating ring is sleeved on the free end of the cylindrical head and fixed in the circumferential direction. The side of the rotating ring near the lock housing in the thickness direction abuts against the cylindrical structure, thus achieving the fixation of the handle. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of an embodiment of the present invention, showing an extremely narrow lock used inside a bathroom door;
[0022] Figure 2 This is a schematic diagram of the lock shell of an ultra-narrow lock used inside a bathroom door according to an embodiment of this utility model;
[0023] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention, showing an extremely narrow lock used inside a bathroom door;
[0024] Figure 4 yes Figure 3 A magnified view of a portion of the image;
[0025] Figure 5 This is a schematic diagram of the installation of the handle component of an ultra-narrow lock inside a bathroom door according to an embodiment of this utility model;
[0026] Figure 6 This is a schematic diagram of the handle component of an ultra-narrow lock used inside a bathroom door according to an embodiment of this utility model.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0029] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.
[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.
[0031] Reference Figures 1 to 6 In one embodiment of this utility model, an ultra-narrow lock for the interior of a bathroom door includes:
[0032] The plate-shaped lock housing 100 is provided with a through hole 110, and a cylindrical structure 120 is provided on the inner side of the lock housing 100 surrounding the through hole 110;
[0033] The handle 200 includes an integrally formed and interconnected columnar head 220 and handle-shaped part 210. The columnar head 220 has a through groove 221 extending through its middle portion. The columnar head 220 extends from the outer end of the cylindrical structure 120 to its inner end.
[0034] A square shaft 300 passes through the through groove 221 and forms a circumferential fixation.
[0035] A rotating ring 400 is sleeved on the free end of the columnar head 220 and fixed in the circumferential direction. The rotating ring 400 is fixed in position in the length direction of the columnar head 220 and abuts against the cylindrical structure 120.
[0036] A helical spring 500 is sleeved on the cylindrical structure 120 and located between the lock housing 100 and the rotating ring 400. The helical spring 500 engages the rotating ring 400 with the lock housing 100 and is used to reset the rotating ring 400.
[0037] In the existing technology, the addition of a handle lock bearing requires precise control of the size and shape of the parts to ensure that they can fit and operate correctly; special attention also needs to be paid to the position and orientation of the bearing during installation to avoid unnecessary wear or failure during use.
[0038] The present invention relates to an ultra-narrow lock for the interior of a bathroom door, comprising a plate-shaped lock shell 100, a through hole 110 extending through the thickness direction on the lock shell 100, and a cylindrical structure 120 surrounding the through hole 110 on the inner side of the lock shell 100.
[0039] The handle component 200 includes an integrally formed, interconnected columnar head 220 and a handle-shaped portion 210. A through groove 221 extends through the center of the columnar head 220. The columnar head 220 passes from the outer end to the inner end of the cylindrical structure 120. The handle component 200 is integrally mounted on the lock housing 100 via a through hole 110, fitting the cylindrical structure 120.
[0040] The square shaft 300 passes through the through slot 221 and is fixed in the circumferential direction. The square shaft 300 cooperates with the lock body of the lever lock. When the handle 200 drives the square shaft 300 to rotate, the state of the lock body changes, thereby enabling the door to be closed and unlocked.
[0041] A rotating ring 400 is fitted onto the free end of the cylindrical head 220 and is fixed circumferentially. The circumferential fixation between the rotating ring 400 and the cylindrical head 220 can be achieved in various ways, such as forming a groove structure on the cylindrical head 220 and a corresponding protruding structure on the rotating ring 400, thereby achieving circumferential fixation. The rotating ring 400 is fixed in position along the length of the cylindrical head 220. The side of the rotating ring 400 near the lock housing 100 in the thickness direction abuts against the cylindrical structure 120.
[0042] A helical spring 500 is sleeved on the cylindrical structure 120 and located between the lock housing 100 and the rotary ring 400. The helical spring 500 engages the rotary ring 400 with the lock housing 100 and is used to reset the rotary ring 400. For example, the rotary ring 400 has two actuating protrusions. When the rotary ring 400 rotates in two directions, the two actuating protrusions interact with the helical spring 500 to increase the elastic force. When the force of rotating the rotary ring 400 disappears, the elastic force of the helical spring 500 drives the rotary ring 400 to reset.
[0043] In summary, the handle 200 is integrally mounted on the lock housing 100 through hole 110, which fits into the cylindrical structure 120, thereby reducing the difficulty of processing and assembly. The swivel ring 400 is sleeved on the free end of the columnar head 220 and is fixed in the circumferential direction. The side of the swivel ring 400 near the lock housing 100 in the thickness direction abuts against the cylindrical structure 120, thus achieving the fixation of the handle 200.
[0044] Reference Figures 1 to 4 In one embodiment, a first lubricating ring 600 is sleeved on the bottom of the columnar head 220, and the first lubricating ring 600 is clamped between the handle-shaped part 210 and the lock shell 100.
[0045] In this embodiment, the introduction of the first lubricating ring 600 reduces the frictional force experienced by the handle 200 during rotation. The first lubricating ring 600 can be made of a self-lubricating material, such as graphite or polytetrafluoroethylene. These characteristics solve the problem of high temperature resistance during rotation of the handle 200 when it is connected to the lock housing 100 by the bearing components.
[0046] Reference Figures 1 to 4 In one embodiment, a second lubricating ring 700 is sandwiched between the cylindrical structure 120 and the rotary ring 400.
[0047] In this embodiment, the introduction of the second lubricating ring 700 reduces the frictional force experienced by the rotating ring 400 during rotation. The second lubricating ring 700 can be made of a self-lubricating material, such as graphite or polytetrafluoroethylene. These characteristics further solve the problem of high temperature resistance during rotation of the handle 200 due to the connection of the handle 200 to the lock housing 100 via the bearing components.
[0048] Reference Figures 1 to 4 In one embodiment, a slide plate 230 is slidably disposed inside the handle-shaped portion 210 along the length direction, at least a portion of the slide plate 230 is exposed outside the handle-shaped portion 210, a fixing pin 240 is elastically supported inside the handle-shaped portion 210 in the thickness direction, a locking hole 130 is provided on the lock housing 100 corresponding to the fixing pin 240, and the slide plate 230 is released and the fixing pin 240 is pressed down.
[0049] In this embodiment, a locking structure is proposed, in which the fixing pin 240 can be sleeved on a helical spring and thus elastically supported. The fixing pin 240 is pressed down and released by the sliding of the sliding plate 230. When the sliding plate 230 presses down on the fixing pin 240, the fixing pin 240 compresses the helical spring and engages with the locking hole 130, thereby restricting the rotation of the handle 200; when the sliding plate 230 releases the fixing pin 240, the fixing pin 240 separates from the locking hole 130 under the action of the helical spring, thereby allowing the handle 200 to perform a rotational action.
[0050] Reference Figures 1 to 4 In one embodiment, the portion of the hand-shaped portion 320 exposed above the handle-shaped portion 210 is a paddle 231, which is disposed on the side of the handle-shaped portion 210 near the lock housing 100.
[0051] In this embodiment, the inner side of the paddle 231 improves the ease of operation and ensures cleanliness.
[0052] Reference Figures 1 to 5 In one embodiment, a retaining ring 250 is provided corresponding to the columnar head 220, the retaining ring 250 abutting the side of the rotary ring 400 away from the lock housing 100 in the thickness direction.
[0053] In this embodiment, a method for limiting the length of the rotating ring 400 in the columnar head 220 is proposed. A ring groove is provided on the columnar head 220 to provide a basis for the installation of the retaining spring 250. The retaining spring 250 fixes one side of the rotating ring 400, which presses the rotating ring 400 against the cylindrical structure 120, thereby completing the fixation of the rotating ring 400.
[0054] Reference Figures 1 to 5In one embodiment, at least one limiting groove 222 is provided on the outer periphery of the free end of the columnar head 220, and a protrusion 410 is provided on the rotating ring 400 corresponding to the limiting groove 222.
[0055] In this embodiment, a method is proposed in which the rotating ring 400 and the columnar head 220 are fixed in the circumferential direction. The number of limiting grooves 222 is preferably two or four, which facilitates processing, can better fix the rotating ring 400, and will not excessively reduce the structural strength of the columnar head 220.
[0056] In one embodiment, the handle 200 is made of metal or polymer.
[0057] In this embodiment, when the handle 200 is made of metal, it can be made of aluminum or copper. When the handle 200 is made of polymer, it can be made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, polycarbonate, polyurethane, polyamide, polysulfone, and polyetheretherketone, etc.
[0058] In one embodiment, the handle-shaped portion 210 is detachably provided with a handle cover on the side away from the lock housing 100.
[0059] In this embodiment, the handle cover provides a basis for the installation of internal components of the handle-shaped part 210. The connection between the handle cover and the handle-shaped part 210 can be a snap-fit or a fastener, etc.
[0060] Reference Figures 1 to 4 In one embodiment, two abutment seats 140 are provided inside the lock housing 100, and the two free ends of the helical spring 500 abut against one of the abutment seats 140 respectively.
[0061] In this embodiment, the position of the helical spring 500 can be limited by the provision of two abutment seats 140, and the abutment seats 140 can be integrally formed with the lock case.
[0062] In summary, this utility model provides an ultra-narrow lock for the interior of a bathroom door. The handle 200 is integrally mounted on the through hole 110 of the lock housing 100, which fits into the cylindrical structure 120, thereby reducing the difficulty of processing and assembly. The rotating ring 400 is sleeved on the free end of the columnar head 220 and is fixed in the circumferential direction. The side of the rotating ring 400 near the lock housing 100 in the thickness direction abuts against the cylindrical structure 120, thereby achieving the fixation of the handle 200.
[0063] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. An extremely narrow lock for the inside of a bathroom door, characterized in that, include: A plate-shaped lock housing (100) is provided with a through hole (110), and a cylindrical structure (120) is provided on the inner side of the lock housing (100) surrounding the through hole (110). The handle (200) includes an integrally formed and interconnected columnar head (220) and handle-shaped part (210), wherein a through groove (221) is passed through the middle of the columnar head (220), and the columnar head (220) is inserted from the outer end of the cylindrical structure (120) to the inner end; A square shaft (300) passes through the through slot (221) and forms a circumferential fixation; A rotating ring (400) is sleeved on the free end of the columnar head (220) and fixed in the circumferential direction, wherein the rotating ring (400) is fixed in position in the length direction of the columnar head (220) and the rotating ring (400) abuts against the cylindrical structure (120). A helical spring (500) is sleeved on the cylindrical structure (120) and located between the lock housing (100) and the rotating ring (400), wherein the helical spring (500) engages the rotating ring (400) with the lock housing (100) and is used to reset the rotating ring (400).
2. The ultra-narrow lock for the interior of a bathroom door according to claim 1, characterized in that, The bottom of the columnar head (220) is fitted with a first lubricating ring (600), which is clamped between the handle-shaped part (210) and the lock shell (100).
3. The ultra-narrow lock for the interior of a bathroom door according to claim 2, characterized in that, The second lubricating ring (700) is sandwiched between the cylindrical structure (120) and the rotating ring (400).
4. The ultra-narrow lock for the interior of a bathroom door according to claim 1, characterized in that, The handle-shaped part (210) has a sliding plate (230) inside which it slides along the length direction. At least a portion of the sliding plate (230) is exposed outside the handle-shaped part (210). The handle-shaped part (210) has a retaining pin (240) elastically supported inside in the thickness direction. The lock housing (100) has a locking hole (130) corresponding to the retaining pin (240). The sliding plate (230) releases and presses down the retaining pin (240).
5. The ultra-narrow lock for the interior of a bathroom door according to claim 4, characterized in that, The portion of the hand-shaped part (320) that protrudes from the handle-shaped part (210) is a paddle (231), which is located on the side of the handle-shaped part (210) near the lock housing (100).
6. The ultra-narrow lock for the interior of a bathroom door according to any one of claims 1 to 5, characterized in that, A retaining ring (250) is provided corresponding to the columnar head (220), and the retaining ring (250) abuts the side of the rotary ring (400) away from the lock housing (100) in the thickness direction.
7. The ultra-narrow lock for the interior of a bathroom door according to any one of claims 1 to 5, characterized in that, At least one limiting groove (222) is provided on the outer periphery of the free end of the columnar head (220), and a protrusion (410) is provided on the rotating ring (400) in cooperation with the limiting groove (222).
8. The ultra-narrow lock for the interior of a bathroom door according to any one of claims 1 to 5, characterized in that, The handle (200) is made of metal or polymer.
9. The ultra-narrow lock for the interior of a bathroom door according to any one of claims 1 to 5, characterized in that, The handle-shaped portion (210) is detachably provided with a handle cover on the side away from the lock housing (100).
10. The ultra-narrow lock for the interior of a bathroom door according to any one of claims 1 to 5, characterized in that, The lock housing (100) has two abutment seats (140) on its inner side, and the two free ends of the helical spring (500) abut against one of the abutment seats (140) respectively.