General-purpose door lock fixing structure with adjustable hole spacing
Through innovative design of the hole adjustment mechanism and sealing fixing structure, the problem of complex hole spacing adjustment in existing door lock fixing structures has been solved, achieving precise hole spacing adjustment and door lock stability and sealing, thereby improving the success rate of lock replacement and the reliability of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU JINDAFU LOCK CO LTD
- Filing Date
- 2025-09-16
- Publication Date
- 2026-06-23
AI Technical Summary
The existing general-purpose door lock fixing structure is complex and difficult to match when adjusting the hole spacing, making it difficult for users to replace locks.
The lock employs a hole-adjusting mechanism, a rotation adjustment plate, and a sealing and fixing mechanism. Through a combination of pins, inner and outer fixing sleeves, and bolts, it achieves precise adjustment and fixing of the hole spacing. Combined with a sealing ring and retaining ring structure, it ensures the stability and sealing performance of the door lock.
It enables precise adjustment of the hole spacing, improves the success rate of lock replacement, enhances the stability and sealing of the door lock, and reduces installation difficulty and maintenance costs.
Smart Images

Figure CN224396206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hardware locks and door and window accessories, and in particular to a universal door lock fixing structure with adjustable hole spacing. Background Technology
[0002] An adjustable-hole-distance door lock fixing structure refers to a door lock whose installation allows the distance between the connecting holes used to fix the lock body and the door to be adjusted according to actual needs. A universal door lock fixing structure means that the fixing method, size specifications, etc. of the door lock can be adapted to various types, thicknesses, and opening standards of door bodies, without the need to design a separate fixing structure for different door bodies. When replacing door locks during home renovation, if the lock hole spacing on the original door body does not match the default hole spacing of the newly purchased door lock, there is no need to re-drill holes and damage the door body structure; simply adjust the hole spacing adjustment component on the new door lock fixing structure.
[0003] In the existing technology, some general-purpose door lock fixing structures usually have an adjustment component with a long hole and a multi-position positioning hole on the fixing frame. When it is necessary to adapt to different hole distances, first loosen the locking screw on the adjustment component, push and rotate the adjustment component to align the connecting hole on the component with the actual hole distance of the door body. After alignment, tighten the locking screw to fix the position of the adjustment component, and the hole distance adaptation can be completed.
[0004] In the existing technology, the old hole spacing of some general-purpose door lock fixing structures is numerous and complex, which can easily interfere with the positioning of the adjustment components. It is difficult for users who are changing locks to match the appropriate hole spacing. Therefore, a general-purpose door lock fixing structure with adjustable hole spacing is proposed to solve the above problems. Summary of the Invention
[0005] To overcome the above shortcomings, this utility model provides a universal door lock fixing structure with adjustable hole spacing, aiming to improve the problem that the old universal door lock fixing structure has many and complex hole spacings, making it difficult for lock replacement users to match the appropriate hole spacing.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A universal door lock fixing structure with adjustable hole spacing includes an outer lock plate. An adjusting mechanism and a sealing fixing mechanism are fixedly connected inside the outer lock plate. The adjusting mechanism includes a fixing ring, which is externally fixedly connected to the inside of the outer lock plate. An adjusting component is rotatably connected inside the fixing ring. A rotation adjustment plate is fixedly connected to the outside of the outer lock plate. Two position adjusting tracks are provided inside the rotation adjustment plate. Two geometric fixing brackets are fixedly connected to the outside of the rotation adjustment plate. Each geometric fixing bracket has a lock plate support slot inside.
[0008] As a further description of the above technical solution:
[0009] The adjusting assembly includes a pin, which is externally rotatably connected to the inside of the fixing ring. One end of the pin is fixedly connected to an external handle, and two inner and outer fixing sleeves are fixedly connected to the inside of the door lock plate.
[0010] As a further description of the above technical solution:
[0011] The other end of the latch is fixedly connected to an inner handle, and the outside of the latch is rotatably connected to an inner door lock plate. The inner door lock plate is internally threaded with two bolts.
[0012] As a further description of the above technical solution:
[0013] The pin is externally rotatably connected to the inside of the indexing adjustment plate, and the inside of each of the inner and outer fixing sleeves is respectively threaded to the outside of the bolt;
[0014] As a further description of the above technical solution:
[0015] The outer side of the inner and outer fixing sleeves is fixedly connected to the inside of the position adjustment track, the outer side of the inner and outer fixing sleeves is fixedly connected to the inside of the support locking plate groove, and the outer side of the geometric fixing bracket is fixedly connected to the outside of the position adjustment track.
[0016] As a further description of the above technical solution:
[0017] The sealing and fixing mechanism includes a sealing ring, which is fixedly connected to the outside of the door lock plate. The outside of the door lock plate has two bases fixedly connected to the inside. Each base has a retaining ring fixedly connected to the outside. Each retaining ring has two connecting plates fixedly connected to the outside. Each connecting plate has a spring fixedly connected to the outside. The inside of the door lock plate has two fixing plates fixedly connected to the inside. Each fixing plate has a bolt fixedly connected to the outside.
[0018] As a further description of the above technical solution:
[0019] The sealing ring is externally fixedly connected to the outside of the inner door lock plate, the retaining ring is externally fixedly connected to the inside of the outer door lock plate, and the retaining ring is externally fixedly connected to the adjacent side of the two connecting plates.
[0020] As a further description of the above technical solution:
[0021] The other end of the spring is fixedly connected to the outside of the base, the outside of the latch is slidably connected to the inside of the retaining ring, and the outside of the latch is fixedly connected to the inside of the door lock plate.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, when it is necessary to adjust the hole spacing, first loosen the bolts. At this time, the inner and outer fixing sleeves can slide along the position adjustment track. At the same time, the inner and outer fixing sleeves are inserted into the groove of the support lock plate to ensure the position is stable and to achieve precise adjustment and fixation of the hole spacing. When using the door lock, turn the outer handle and the inner handle to complete the door opening and closing operation. The position adjustment track is fixed to the lock cover plate in a Z-shaped way, thereby increasing the maximum adjustable effective hole spacing and the successful matching rate of lock replacement, eliminating the hassle of purchasing locks.
[0024] 2. In this utility model, the sealing rings are fixed to the outside of the door lock plate and the inside door lock plate respectively, filling the gap between the two and the door body. The springs are fixed to the base and the connecting plate at both ends and continuously provide elastic force, so that the retaining ring clamps the sliding connection of the retaining bolt, thus completing the positioning and fixing of the inside door lock plate. The sealing and fixing can prevent dust and moisture from entering the internal protective components of the door lock, while preventing the inside door lock plate from shaking and shifting, ensuring the stability of the door lock structure and the reliability of its use. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a universal door lock fixing structure with adjustable hole spacing proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the rotation adjustment plate of a universal door lock fixing structure with adjustable hole spacing proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the inner lock plate of a universal door lock fixing structure with adjustable hole spacing proposed in this utility model;
[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0029] Legend:
[0030] 1. External door lock plate; 2. Adjustment mechanism; 21. Fixing ring; 22. Adjustment assembly; 221. Pin; 222. External handle; 223. Inner and outer fixing sleeves; 224. Internal handle; 225. Internal door lock plate; 226. Bolt; 23. Rotation adjustment plate; 24. Position adjustment track; 25. Geometric fixing bracket; 26. Support lock plate groove; 3. Sealing and fixing mechanism; 31. Sealing ring; 32. Base; 33. Snap ring; 34. Connecting plate; 35. Spring; 36. Fixing plate; 37. Bolt. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] A universal door lock fixing structure with adjustable hole spacing, as shown in the reference. Figure 1 and Figure 2 The system includes an outer lock plate 1, which covers the outside of the door for protection and aesthetic purposes. An adjusting mechanism 2 is fixedly connected inside the outer lock plate 1 to adjust the spacing of the lock connection holes and adapt to different door opening standards. A sealing and fixing mechanism 3 is also fixedly connected inside the outer lock plate 1 to enhance the seal between the lock and the door, prevent dust and moisture from entering, and improve stability. The adjusting mechanism 2 includes a fixing ring 21, which fixes part of the structure and provides an installation reference. The fixing ring 21 is externally fixed to the inside of the outer lock plate 1, and an adjusting component 22 is rotatably connected inside the fixing ring 21 to control the door lock opening and closing, while simultaneously adjusting the hole positions. The external lock plate 1 is fixedly connected to a rotation adjustment plate 23, which is used to support part of the structure and provide a hole adjustment path. The rotation adjustment plate 23 has two position adjustment rails 24 inside, which are used to guide the movement of the internal connecting structure and limit the adjustment direction. The external lock plate 23 is fixedly connected to two geometric fixing brackets 25, which are used to enhance the strength of the structure of the rotation adjustment plate 23 and to position and support the lock plate. At the same time, the geometric fixing brackets 25 can disperse external forces and prevent the rotation adjustment plate 23 from deforming. Each geometric fixing bracket 25 has a lock plate support slot 26 inside, which is used to accommodate and fix the lock plate and ensure the lock plate is installed in a precise position.
[0033] Specifically, the exterior lock plate 1 combines protection and aesthetics. The hole adjustment mechanism 2 provides a stable reference through the fixing ring 21. Together with the adjustment component 22 and the position adjustment track 24 on the rotation adjustment plate 23, it can flexibly adjust the hole spacing to adapt to different door opening standards without additional drilling, reducing installation difficulty. The geometric fixing bracket 25 and the lock plate support groove 26 enhance the strength of the rotation adjustment plate 23 and accurately position the lock plate to avoid deformation and displacement. The sealing and fixing mechanism 3 effectively improves the sealing performance, prevents dust and moisture from entering, and also strengthens the door lock fixation. The overall structure takes into account adaptability, stability and protection, improves installation efficiency and door lock lifespan, and reduces use and maintenance costs.
[0034] Adjustment assembly 22 includes a pin 221 for transmitting rotational power and controlling the extension and retraction of the door lock tongue. Rotation of the pin 221 drives the movement of the lock tongue to open and close the door. The external rotatable connection of the pin 221 is to the inside of the fixed ring 21. One end of the pin 221 is fixedly connected to an external handle 222 for operation by the user from the outside of the door, which drives the pin 221 to rotate. The internal part of the door lock plate 1 is fixedly connected to two inner and outer fixed sleeves 223 for connecting the door lock plate 1 to other structures and adjusting the hole spacing. The other end of the pin 221... An inner handle 224 is fixedly connected for the user to operate from the inside of the door, which in turn drives the latch 221 to rotate. The latch 221 is externally connected to an inner door lock plate 225, which covers the inside of the door and works with the outer door lock plate 1 to form complete protection. The inner door lock plate 225 has two bolts 226 internally threaded to fix the inner door lock plate 225 to the inner and outer fixing sleeves 223 and to lock the hole spacing adjustment position. After the bolts 226 are tightened, the position of the inner and outer fixing sleeves 223 can be fixed to prevent the hole spacing from shifting during use.
[0035] Specifically, the latch 221 can transmit rotational power and control the extension and retraction of the bolt. Together with the outer handle 222 and the inner handle 224, it facilitates the user's operation from inside and outside the door to open and close the door, improving ease of use. The inner and outer fixing sleeves 223 can connect the outer lock plate 1 to other structures and also assist in adjusting the hole spacing to adapt to different door requirements. The inner lock plate 225 and the outer lock plate 1 work together to form a complete protection, protecting the internal components of the door lock. The bolt 226 can fix the inner lock plate 225 and the inner and outer fixing sleeves 223, lock the hole spacing position, prevent the hole spacing from shifting during use, ensure structural stability, and improve the overall door lock operation experience and reliability.
[0036] The external rotatable connection of the pin 221 is to the inside of the indexing adjustment plate 23. The indexing adjustment plate 23 provides auxiliary positioning for the pin 221, ensuring the stability of the axis when the pin 221 rotates. The internal threads of each inner and outer fixing sleeve 223 are respectively threaded to the outside of the bolt 226. The tightening or loosening of the bolt 226 can realize the fixing and separation of the inner and outer fixing sleeves 223 from the inner door lock plate 225, facilitating the movement of the inner and outer fixing sleeves 223 when adjusting the hole spacing. The external fixed connection of the inner and outer fixing sleeves 223 is to the inside of the position adjustment track 24. The position adjustment track 24 limits the movement direction of the inner and outer fixing sleeves 223, making them... The hole spacing can only be adjusted along the track to ensure adjustment accuracy. The external fixed connection of the inner and outer fixed sleeves 223 is fixed inside the support lock plate groove 26. The support lock plate groove 26 plays an auxiliary fixing role for the inner and outer fixed sleeves 223 to prevent them from tilting during sliding. The external fixed connection of the geometric fixed bracket 25 is fixed outside the position adjustment track 24 to further strengthen the structure of the position adjustment track 24 and avoid the track from being deformed by external forces, thus affecting the adjustment function. The position adjustment track 24 uses a Z-shaped clearance method to fix the rear lock cover plate, thereby increasing the maximum adjustable effective hole spacing and the successful matching rate of lock replacement, eliminating the hassle of purchasing locks.
[0037] Specifically, the pin 221 is rotatably connected to the indexing plate 23. The indexing plate 23 assists in positioning the pin 221 to ensure the stability of its rotation axis and smooth door opening and closing. The inner and outer fixing sleeves 223 are threadedly connected to the bolts 226. Tightening or loosening the bolts 226 can fix and separate the two, facilitating the movement of the inner and outer fixing sleeves 223 when adjusting the hole spacing. The inner and outer fixing sleeves 223 are fixed to the position adjustment track 24. The track limits the movement direction of the inner and outer fixing sleeves 223 to ensure the accuracy of hole spacing adjustment. The inner and outer fixing sleeves 223 are fixed to the support lock plate slot 26. The support lock plate slot 26 assists in fixing the inner and outer fixing sleeves 223 to prevent them from sliding or tilting. The geometric fixing bracket 25 reinforces the track to avoid deformation of the track by external forces, thus improving the overall stability and reliability of door lock adjustment. The position adjustment track 24 uses a Z-shaped clearance method to fix the rear lock cover plate, thereby increasing the maximum adjustable effective hole spacing and the successful matching rate of lock replacement, eliminating the hassle of purchasing locks.
[0038] Reference Figures 2 to 4The sealing and fixing mechanism 3 includes a sealing ring 31, used to fill the gap between the outer lock plate 1, the inner lock plate 225, and the door body, while preventing dust and moisture from entering the door lock. The sealing ring 31 is externally fixedly connected to the outside of the outer lock plate 1. Two bases 32 are internally fixedly connected to the outer lock plate 1 for mounting parts of the structure and providing a fixing foundation. Each base 32 is externally fixedly connected to a retaining ring 33 for engaging with parts of the structure and enhancing the fixing stability of the inner lock plate 225. Two connecting plates 34 are externally fixedly connected to the retaining rings 33 for... In the connecting part structure, and to transmit the elastic force of the structure, each connecting plate 34 is fixedly connected to the outside of a spring 35 to provide elastic force and enable the retaining ring 33 to have the ability to reset. The inside of the door lock plate 225 is fixedly connected to two fixing plates 36 to fix the connecting structure and transmit the force of the door lock plate 225. Each fixing plate 36 is fixedly connected to the outside of a bolt 37 to cooperate with the retaining ring 33 and lock the position of the door lock plate 225. The bolt 37 is inserted into the retaining ring 33 to prevent the door lock plate 225 from shifting during use.
[0039] Specifically, the sealing ring 31 fills the gap between the outer lock plate 1, the inner lock plate 225 and the door body, effectively preventing dust and moisture from entering, protecting the internal components of the door lock and extending its service life. The base 32 provides a stable installation foundation for the retaining ring 33. The retaining ring 33 cooperates with the bolt 37 to lock the position of the inner lock plate 225 and prevent it from shifting during use. The connecting plate 34 transmits the elastic force of the spring 35. The spring 35 not only provides the retaining ring 33 with a reset capability, but also enhances the fit between the retaining ring 33 and the bolt 37. The fixing plate 36 reinforces the connection between the bolt 37 and the inner lock plate 225, thereby improving the overall stability and sealing of the door lock and ensuring its reliability.
[0040] The sealing ring 31 is externally fixedly connected to the outside of the inner door lock plate 225, ensuring a seal at the contact point between the inner door lock plate 225 and the door body, thus creating a double sealing effect inside and outside the door. The retaining ring 33 is externally fixedly connected to the inside of the outer door lock plate 1, ensuring a stable connection between the retaining ring 33 and the outer door lock plate 1 and preventing shaking. The retaining ring 33 is externally fixedly connected to the adjacent side of the two connecting plates 34, allowing the connecting plates 34 and the retaining ring 33 to move synchronously, ensuring smooth transmission of elastic force. The other end of the spring 35 is fixedly connected to the outside of the base 32, so that both ends of the spring 35 are respectively fixed to the base. 32 and the connecting plate 34 are always under stress and continuously provide elastic force. The external sliding connection of the bolt 37 is inside the retaining ring 33. When installing the inner door lock plate 225, the bolt 37 can be inserted into the retaining ring 33. The elastic force of the spring 35 makes the retaining ring 33 clamp the bolt 37, realizing the quick positioning and initial fixation of the inner door lock plate 225. The external fixed connection of the bolt 37 to the inside of the inner door lock plate 225 further enhances the connection stability between the bolt 37 and the inner door lock plate 225, ensuring that the bolt 37 and the inner door lock plate 225 move synchronously and avoids jamming failure.
[0041] Specifically, the sealing ring 31 is fixed to the outside of the inner door lock plate 225, forming a double seal inside and outside the door, which enhances the dustproof and waterproof effect. The retaining ring 33 is fixed inside the outer door lock plate 1 and connects the two connecting plates 34 to the near side, which not only prevents itself from shaking, but also ensures that the connecting plate 34 and the retaining ring 33 move synchronously, ensuring smooth transmission of elastic force. The spring 35 is fixed at both ends to the base 32 and the connecting plate 34, and provides stable elastic force under continuous force. The retaining bolt 37 slides to connect the retaining ring 33 and is fixed inside the inner door lock plate 225, which not only realizes the quick positioning and initial fixation of the inner door lock plate 225, but also enhances the stability of its connection with the lock plate, prevents jamming failure, and improves the overall sealing and fixing reliability.
[0042] The implementation principle of this application embodiment is as follows: When it is necessary to adjust the hole spacing, first loosen the bolt 226 to separate the inner and outer fixing sleeves 223 from the inner lock plate 225. At this time, the inner and outer fixing sleeves 223 can slide along the position adjustment track 24 and be adjusted to a suitable position according to the actual hole spacing of the door. After the adjustment is completed, tighten the bolt 226 to fix the inner and outer fixing sleeves 223 in the current position. At the same time, the inner and outer fixing sleeves 223 are inserted into the support lock plate groove 26 to ensure the position is stable and to achieve precise adjustment and fixation of the hole spacing. When using the door lock, rotate the outer handle 222 and the inner handle 224 to drive the pin 221 to rotate around the fixing ring 21 and the rotation adjustment plate 23, thereby controlling the extension and retraction of the lock tongue and completing the opening and closing operation. The position adjustment track 24 is fixed to the rear lock cover plate in a Z-shaped way, thereby increasing the maximum adjustable effective hole spacing and the successful matching rate of lock replacement, eliminating the hassle of purchasing locks.
[0043] The sealing rings 31 are fixed to the outside of the outer lock plate 1 and the inner lock plate 225 respectively, filling the gap between the two and the door body. The base 32 provides an installation base for the retaining ring 33. The retaining ring 33 is connected to the connecting plate 34. The spring 35 fixes the base 32 and the connecting plate 34 at both ends and continuously provides elastic force, so that the retaining ring 33 clamps the slidingly connected bolt 37. The bolt 37 is fixed to the inner lock plate 225 and cooperates with the retaining ring 33 to complete the positioning and fixing of the inner lock plate 225. The sealing and fixing can prevent dust and moisture from entering the internal protective components of the door lock, while avoiding the shaking and displacement of the inner lock plate 225, ensuring the stability of the door lock structure and the reliability of use.
[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A universal door lock fixing structure with adjustable hole spacing, comprising an outer door lock plate (1), characterized in that: The door lock plate (1) is fixedly connected to an adjusting hole mechanism (2), and the door lock plate (1) is fixedly connected to a sealing and fixing mechanism (3). The adjusting mechanism (2) includes a fixed ring (21), which is fixedly connected to the outside of the door lock plate (1). An adjusting component (22) is rotatably connected inside the fixed ring (21). A rotation adjustment plate (23) is fixedly connected to the outside of the door lock plate (1). Two position adjustment tracks (24) are opened inside the rotation adjustment plate (23). Two geometric fixing brackets (25) are fixedly connected to the outside of the rotation adjustment plate (23). Each geometric fixing bracket (25) is provided with a support lock plate slot (26).
2. The universal door lock fixing structure with adjustable hole spacing according to claim 1, characterized in that: The adjustment assembly (22) includes a pin (221), the outside of which is rotatably connected to the inside of the fixing ring (21), and one end of the pin (221) is fixedly connected to an outer handle (222). The inside of the door lock plate (1) is fixedly connected to two inner and outer fixing sleeves (223).
3. The universal door lock fixing structure with adjustable hole spacing according to claim 2, characterized in that: The other end of the latch (221) is fixedly connected to an inner handle (224), and the outside of the latch (221) is rotatably connected to an inner door lock plate (225). The inner door lock plate (225) is internally threaded with two bolts (226).
4. The universal door lock fixing structure with adjustable hole spacing according to claim 3, characterized in that: The external of the pin (221) is rotatably connected to the inside of the indexing adjustment plate (23), and the inside of each of the inner and outer fixing sleeves (223) is threaded to the outside of the bolt (226).
5. The universal door lock fixing structure with adjustable hole spacing according to claim 4, characterized in that: The outer and inner fixed sleeves (223) are fixedly connected to the inside of the position adjustment rail (24), the outer and inner fixed sleeves (223) are fixedly connected to the inside of the support lock plate groove (26), and the outer and outer fixed brackets (25) are fixedly connected to the outside of the position adjustment rail (24).
6. The universal door lock fixing structure with adjustable hole spacing according to claim 3, characterized in that: The sealing and fixing mechanism (3) includes a sealing ring (31), which is fixedly connected to the outside of the door lock plate (1). The door lock plate (1) is fixedly connected to two bases (32), and each base (32) is fixedly connected to a retaining ring (33). The retaining ring (33) is fixedly connected to two connecting plates (34), and each connecting plate (34) is fixedly connected to a spring (35). The door lock plate (225) is fixedly connected to two fixing plates (36), and each fixing plate (36) is fixedly connected to a bolt (37).
7. The universal door lock fixing structure with adjustable hole spacing according to claim 6, characterized in that: The sealing ring (31) is externally fixedly connected to the outside of the inner door lock plate (225), the retaining ring (33) is externally fixedly connected to the inside of the outer door lock plate (1), and the retaining ring (33) is externally fixedly connected to the adjacent side of the two connecting plates (34).
8. The universal door lock fixing structure with adjustable hole spacing according to claim 7, characterized in that: The other end of the spring (35) is fixedly connected to the outside of the base (32), the outside of the latch (37) is slidably connected to the inside of the retaining ring (33), and the outside of the latch (37) is fixedly connected to the inside of the door lock plate (225).