Glass door lock structure

By introducing a connecting piece design into the glass door lock, the lock cylinder, handle, and panel form a parallel connection, solving the problems of loosening and component retraction in the glass door lock, achieving a stable connection structure, extending service life, and reducing maintenance costs.

CN224579189UActive Publication Date: 2026-07-31QINGTIAN LIANGJIE LOCK CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGTIAN LIANGJIE LOCK CO LTD
Filing Date
2025-09-11
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing glass door locks are prone to loosening and separation after prolonged use, with parts permanently regressing and the lock not locking properly. They also lack a robust product design.

Method used

The lock cylinder, handle, and panel are fixedly connected by a connecting piece to form a parallel relationship and are clamped and fixed to the door body by fasteners. The connecting piece has a variety of connection points and transition parts to enhance structural stability.

Benefits of technology

It improves the stability and lifespan of glass door locks, reduces maintenance and replacement costs, and ensures a stable connection over a long period of time.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a door lock, and more particularly to a glass door lock structure, which solves the problem of stability in glass door locks. It includes a door body, a lock cylinder, a panel, and handles, as well as connecting pieces. The panel has a limiting groove for the door body to insert into, and the door body has an installation groove and an inlet for the lock cylinder to be installed. The installation groove penetrates the door body to form an open slot. The connecting pieces are arranged in pairs on both sides of the lock cylinder and at the slot, and the lock cylinder and connecting pieces are fixedly connected. The handles are respectively located on the outside of the connecting pieces, and the handles are clamped and fixed to the door body by fasteners. The connecting pieces also limit the movement of the handles. The handles, connecting pieces, lock cylinder, and panel are parallel in the sequential connection direction. The connecting pieces are designed as the core for connecting the various main components, and the various components cooperate with each other, facilitating processing, production, and use, meeting the needs of long-term stable use, and reducing maintenance and replacement costs.
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Description

Technical Field

[0001] This utility model relates to a door lock, and more particularly to a glass door lock structure. Background Technology

[0002] Glass door locks are a type of home hardware specifically designed for glass doors, primarily used in frameless glass doors in homes, shops, and offices. Their design must be adapted to the characteristics of glass; conventional locks are difficult to install directly, so electromagnetic locks are often used with specialized accessories to achieve stability, balancing practicality and aesthetics. The main materials are stainless steel, zinc alloy, and aluminum alloy, with stainless steel being recommended due to its superior corrosion resistance. Installation methods vary depending on the door frame type: glass doors with aluminum alloy frames use EM series magnetic locks with floor springs; frameless glass doors use U-shaped brackets or AB-frame adhesive, requiring auxiliary materials such as rubber buffer pads and relay plates. When purchasing, pay attention to brand qualifications and product details, including the completeness of packaging labels, the uniformity of the lock body's electroplating, and the rationality of the key teeth. It is recommended to verify flexibility through multiple opening and closing tests. With technological advancements, smart locks such as magnetic card locks and fingerprint locks are becoming increasingly popular.

[0003] Existing glass door locks differ significantly from ordinary door locks, often exhibiting issues like loosening or even separation after prolonged use; some components permanently regress, and some locks fail to tighten properly; some products require deep machining holes in the lock cylinder, limiting their functionality and hindering assembly; while others have additional accessories that fit onto the lock cylinder, offering only partial improvement. A more comprehensive and robust product that meets both manufacturing and usage needs is lacking. Utility Model Content

[0004] In view of the shortcomings of existing technology, this utility model provides a glass door lock structure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a glass door lock structure, including a door body, a lock cylinder, a panel, and a handle, and also including connecting pieces. The panel is provided with a limiting groove for the door body to be inserted, and the door body is also provided with an installation groove and an inlet for the lock cylinder to be installed. The installation groove penetrates the door body to form an open slot. The connecting pieces are arranged in pairs on both sides of the lock cylinder and at the slot, and the lock cylinder and the connecting pieces are fixedly connected. The handles are respectively arranged on the outside of the connecting pieces. The handles are clamped and fixed to the door body by fasteners. The lock cylinder and the panel are blocked and limited in the direction of the inlet. The connecting pieces are also limited by the handles through fixed connection. The handles, connecting pieces, lock cylinder, and panel are parallel in the sequential connection direction.

[0006] The handle makes contact with the panel.

[0007] One end of the connecting piece is provided with a perpendicular connecting portion, and a fastening hole is provided at the connecting portion.

[0008] The connecting piece has an extension at the right angle of the connecting part that connects to the fastening hole.

[0009] The connecting piece is provided with a fastening hole for connecting the lock cylinder and a docking hole for connecting the handle.

[0010] The handles are provided with threaded connecting posts, and the connecting posts are provided with threaded holes for fastener connection, and the connecting posts pass through the connecting holes.

[0011] The handle is also provided with an opening corresponding to the fastening hole one, and the handle is also provided with a positioning part that restricts the movement of the connecting part, and the positioning part and the connecting part form a fixed-point locking position.

[0012] The connecting piece has a bent or curved transition section near the connecting part.

[0013] The handle includes a handle and a mounting base. The mounting base has a protrusion on its inner wall, and a mounting slot is formed between the protrusion and the inner wall of the mounting base. A mounting strip is provided at the mounting slot.

[0014] Both the protrusions and the mounting strips are arranged around the circumference of the mounting base.

[0015] The beneficial effects of this utility model are as follows: The glass door lock structure provided by this utility model has a connecting piece as the core for connecting various main components. At the same time, the components are matched and cooperate with each other, which facilitates processing, production and use, meets the needs of long-term stable use, and reduces maintenance and replacement costs. Attached Figure Description

[0016] Figure 1 This is a simplified schematic diagram of the combined structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a simplified exploded structural diagram of Embodiment 1 of the present invention;

[0018] Figure 3 This is a partially enlarged structural diagram of Embodiment 1 of this utility model;

[0019] Figure 4 This is a schematic diagram of the planar structure of Embodiment 1 of the present invention;

[0020] Figure 5 This is a schematic diagram of the mounting base structure according to Embodiment 1 of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of Embodiment 2 of this utility model;

[0022] Figure 7 This is a schematic diagram of the lock cylinder and connecting piece structure in Embodiment 3 of this utility model. Detailed Implementation

[0023] Example 1: As Figures 1-5 As shown, a glass door lock structure includes a door body 1, a lock cylinder 2, a panel 3, and a handle 4, as well as a connecting piece 5. The connecting piece 5 is designed for easy attachment and installation, accommodating various sizes of door bodies 1 or lock cylinders 2. The panel 3 has a limiting groove 6 for inserting the door body 1, which limits its position during installation. Since the glass door body 1 is relatively thin compared to other materials, this design meets the requirements. The limiting groove 6 can limit or mitigate vibration to a certain extent, and when the dimensions are precise, it can also significantly improve the stability of the panel 3. The door body 1 also has an installation groove and an inlet for inserting the lock cylinder 2. The installation groove penetrates the door body 1 to form an open slot. The installation groove is a general structural form, providing space for the installation of other components, but it is not limited to this form.

[0024] The connecting pieces 5 are arranged in pairs on both sides of the lock cylinder 2 and at the slot, and the lock cylinder 2 is fixedly connected to the connecting pieces 5. The handles 4 are respectively located on the outside of the connecting pieces 5. The handles 4 are clamped and fixed to the door body 1 by fasteners 7. The lock cylinder 2 and the panel 3 are blocked and limited in the direction of the slot. The connecting pieces 5 are also limited by the fixed connection of the handles 4. The handles 4, connecting pieces 5, lock cylinder 2 and panel 3 are parallel in the sequential connection direction. The lock cylinder 2 is equivalent to being located in the center of the mounting slot, with connecting pieces 5 and handles 4 stacked on both sides. The specific stacking is not necessarily in contact, but can just be the stacked arrangement order, which will not be elaborated on here. The blocking and engagement between the lock cylinder 2 and the panel 3 is, in this embodiment, the exposed part of the lock cylinder 2 extends to both sides to form blocking parts, which are embedded in the door body 1. This is a common technical means in the market. It should be noted that after the handle 4 is fixed, it pulls on the connecting piece 5, and the connecting piece 5 is fixed to the lock cylinder 2. The lock cylinder 2 and the panel 3 are also mutually restrained by mutual restraint. Therefore, the handle 4, lock cylinder 2, and panel 3 are tightly connected through the connecting piece 5, and are pulled and tightened in the parallel direction to prevent them from separating. Even with simple assembly, the components can maintain a stable and tight connection, thus improving service life through integration.

[0025] The handle 4 abuts against the panel 3. The handle 4 is fixed to the door body 1 and interacts with the panel 3 through the interaction caused by the connecting piece 5, which is beneficial to structural stability. Simultaneously, the lock cylinder 2, handle 4, and panel 3 are arranged in a triangular or pinion shape, resulting in stronger overall integration and a tighter connection. One end of the connecting piece 5 has a perpendicular connecting portion 9, with a fastening hole 8 at the connecting portion 9. The design of the connecting portion 9 changes the installation square shape, allowing the restricted direction of the fastener 7 after installation to match the design, i.e., the handle 4, lock cylinder 2, and panel 3 are parallel. The connecting piece 5 has an extension 10 at the right angle of the connecting portion 9, connecting to the fastening hole 8. The extension 10 is designed to strengthen the local structure and facilitate extending the depth of the fastening hole 8, which is beneficial for the stability and adjustment of the threaded connection.

[0026] The connecting piece 5 has a second fastening hole 11 for connecting the lock cylinder 2 and a mating hole 12 for connecting the handle 4. The design of the second fastening hole 11 can be adjusted according to the structural design of the lock cylinder 2. As the main connection point connecting the lock cylinder 2 and the connecting piece 5, its number and position are not limited here. In this embodiment, the mating hole 12 is relatively long and corresponds to the rotation axis of the lock cylinder 2 in the middle. The handles 4 are provided with threaded mating posts 13. The mating posts 13 are provided with threaded holes for fasteners 7 to connect. The mating posts 13 pass through the mating holes 12. It should be noted that the design of the mating holes 12 allows the mating posts 13 to pass through. The mating posts 13 are divided into two sections at the inner and outer handles 4. The handles 4 can be initially engaged by the mating posts 13, and then fastened externally using fasteners 7. This is not limited to this method.

[0027] The handle 4 is also provided with an opening 14 corresponding to the fastening hole 8. The handle 4 also contains a positioning part 15 that restricts the movement of the connecting part 9, forming a fixed-point locking position with the connecting part 9. This fixed-point locking design serves two purposes: firstly, it allows for the installation and positioning of the connecting piece 5, improving assembly convenience; secondly, it prevents the connecting part 9 of the connecting piece 5 from detaching, ensuring structural stability. The connecting piece 5 has a bent or curved transition part 16 near the connecting part 9. The transition part 16 is designed to enhance the structure's elastic recovery force, preventing premature reaching of the fatigue strength limit. When the transition part 16 is absent, the structure can also utilize its own bending recovery force to tilt and deform to meet installation and usage needs, adapting to glass of different thicknesses or other components.

[0028] The handle 4 includes a handle and a mounting base 17. The mounting base 17 has a protrusion 18 on its inner wall, forming a mounting slot with the protrusion 18. A mounting strip 19 is provided at the mounting slot. The protrusion 18 is designed to cooperate with the mounting base 17 to create space for the mounting strip 19. The mounting strip 19 enhances anti-slip properties and sealing, which is beneficial for internal moisture and dust prevention and minimizes slippage. Both the protrusion 18 and the mounting strip 19 are arranged evenly along the circumference of the mounting base 17 with small gaps, meeting design requirements. A closed, ring-shaped structure is not necessary; only anti-slip requirements need to be met. Further details are omitted here.

[0029] Example 2: Different from Example 1, such as Figure 6 As shown, in this embodiment, the connecting piece 5 is connected to the tail of the lock cylinder 2, while the panel 3 and handle 4 remain largely unchanged. This structure can shorten the length of the connecting piece 5, which also meets the design requirements. In addition, the fixing point of the connecting piece 5 can be placed in the middle of the lock cylinder or near the head, or even in any workable or easily workable location, as needed. Further explanation and limitations will not be provided here.

[0030] Example 3: Unlike Examples 1 and 2, as follows Figure 7 As shown, in this embodiment, a connecting structure is provided at the tail of the lock cylinder 2, which engages with the connecting piece 5, but this is not the only option. Fasteners or other methods can also be used to reinforce the connection at this location, primarily because it is positioned at the tail or end of the lock cylinder. The connecting piece 5 is then connected to the handle using fasteners; further details and limitations will not be provided here.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation 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. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.

Claims

1. A glass door lock structure comprising a door body, a lock cylinder, a faceplate and a handle, characterized in that, It also includes connecting pieces. The panel has a limiting groove for the door body to be inserted. The door body also has an installation groove and an inlet for the lock cylinder to be installed. The installation groove penetrates the door body to form an open slot. The connecting pieces are arranged in pairs on both sides of the lock cylinder and at the slot, and the lock cylinder and the connecting pieces are fixedly connected. The handles are respectively arranged on the outside of the connecting pieces. The handles are clamped and fixed to the door body by fasteners. The lock cylinder and the panel are blocked and limited in the direction of the inlet. The connecting pieces are also limited by the fixed connection of the handles. The handles, connecting pieces, lock cylinder and panel are parallel in the sequential connection direction.

2. The glass door lock structure of claim 1, wherein The handle makes contact with the panel.

3. A glass door lock structure according to claim 1 or 2, wherein One end of the connecting piece is provided with a perpendicular connecting portion, and a fastening hole is provided at the connecting portion.

4. A glass door lock structure as defined in claim 3, wherein The connecting piece has an extension at the right angle of the connecting part that connects to the fastening hole.

5. The glass door lock structure of claim 3, wherein The connecting piece is provided with a fastening hole for connecting the lock cylinder and a docking hole for connecting the handle.

6. A glass door lock structure as defined in claim 5, wherein The handles are provided with threaded connecting posts, and the connecting posts are provided with threaded holes for fastener connection, and the connecting posts pass through the connecting holes.

7. A glass door lock structure as defined in claim 3, wherein The handle is also provided with an opening corresponding to the fastening hole one, and the handle is also provided with a positioning part that restricts the movement of the connecting part, and the positioning part and the connecting part form a fixed-point locking position.

8. A glass door lock structure as defined in claim 3, wherein The connecting piece has a bent or curved transition section near the connecting part.

9. The glass door lock structure of claim 1, wherein The handle includes a handle and a mounting base. The mounting base has a protrusion on its inner wall, and a mounting slot is formed between the protrusion and the inner wall of the mounting base. A mounting strip is provided at the mounting slot.

10. A glass door lock structure as defined in claim 9, wherein Both the protrusions and the mounting strips are arranged around the circumference of the mounting base.