Handle structure of linkage door stopper and internal lock knob and door lock structure
By integrating the door catch and inner lock functions into the handle structure and using a transmission mechanism to link the magnetic component and the knob, the problem of integrating the door catch and inner lock into ultra-thin or narrow-frame door panels is solved, resulting in a compact and simple door lock design.
Patent Information
- Application Number
- CN202511402846.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2025-11-14
AI Technical Summary
In existing technologies, it is difficult to integrate door catch and inner lock functions into ultra-thin or narrow-frame door panels. Traditional door catches are difficult to install and damage the wall surface, while inner lock mechanisms increase the thickness of the lock body and the number of parts.
Design a handle structure that links the door catcher and the inner lock knob, integrating the door catcher function into the handle. The axial extension of the magnetic catcher and the rotation of the inner lock assembly are achieved through a transmission mechanism, eliminating the need for additional installation and complex mechanical transmission mechanisms.
It integrates the door catch and internal lock functions, avoids additional installation damage, reduces the thickness of the lock body and the number of parts, adapts to the space constraints of minimalist door panels, simplifies the structure and reduces costs.
Smart Images
Figure CN120946183A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of door locks, and specifically discloses a handle structure that links a door catch and an inner lock knob, as well as a door lock structure. Background Technology
[0002] Door catches, commonly used accessories to keep doors stationary, typically consist of two parts: a magnetic head on the door side and a magnetic base on the wall side. They rely on magnetic force to adhere during use and require pulling horizontally or prying up the magnetic head to release. Frequent pulling not only causes impact loads between the door and the wall, but also leads to peeling of the wall paint and localized deformation of the door over time, as well as loosening and misalignment of the magnetic head itself. Furthermore, traditional door catches or floor catches require screws to be fixed to the door surface or floor / baseboard. For minimalist glass doors and ultra-narrow metal frames commonly used in bathrooms, there is insufficient wall thickness for screw anchoring, and the glass material cannot be directly tapped, making conventional door catches / floor catches difficult to install. Often, the door catch function is forced to be canceled on-site, leaving the door without its parking protection.
[0003] The internal locking function of existing door locks generally uses a mechanical transmission mechanism to convert the rotational motion of the knob into the linear motion of the latch. When the knob is rotated from the inside, the latch extends laterally and inserts into the door frame strike box, forming a second locking mechanism parallel to the main latch. When unlocking, the knob is rotated in the opposite direction, causing the latch to retract. This mechanism requires a complete cavity to be reserved for the mechanical transmission mechanism linked to the latch, resulting in a significant increase in the thickness of the lock body and the number of parts. This places higher demands on the cavity space of the door leaf profile, and in ultra-thin or narrow-framed doors, the internal locking function is often forced to be eliminated due to insufficient space.
[0004] Therefore, this solution proposes a handle structure that can link the door catch and the inner lock knob, aiming to solve the problem that it is difficult to integrate the door catch and inner lock functions in ultra-thin or narrow-frame door panels on the market. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a handle structure and a door lock structure that link the door catch and the inner lock knob.
[0006] In a first aspect, the present invention discloses a handle structure for linking a door closer and an inner locking knob, employing the following technical solution:
[0007] A handle structure for a linked door closer and inner lock knob includes an inner handle assembly, an outer handle assembly, and a connecting shaft. The inner handle assembly includes an inner handle base and a rotatably mounted inner handle. The outer handle assembly includes an outer handle base and a rotatably mounted outer handle. The connecting shaft is coaxially fixed to the inner and outer handles to enable synchronous rotation of the three components. The structure also includes:
[0008] A door catch unlocking assembly includes a magnetic attractor and a transmission mechanism; the inner handle has an inner handle sleeve that rotates and is fitted inside the inner handle base; the magnetic attractor is disposed in the inner handle sleeve and can extend axially; the transmission mechanism is configured to convert the rotational motion of the inner handle into the linear motion of the magnetic attractor.
[0009] The inner locking assembly includes a knob head, a cam block, a drive shaft, and a rolling block. The knob head is fixed to or integrated with the magnetic suction component and can rotate relative to the inner handle sleeve. The outer handle has an outer handle sleeve that rotates with it and is fitted inside the outer handle base. The cam block is rotatably disposed in the outer handle sleeve. The drive shaft is assembled with the knob head and the cam block to make the three rotate synchronously. The outer handle base is provided with a locking groove. The outer handle sleeve is provided with a side cavity corresponding to the locking groove. The rolling block is movably disposed in the side cavity. The cam block has a first position and a second position. When the cam block is rotated to the first position by the knob head, it pushes part of the rolling block out of the side cavity to form an engagement with the locking groove, thus forming a locked state. When the cam block is rotated to the second position by the knob head, it disengages from limiting the rolling block and releases the locked state. The outer handle sleeve rotates with the outer handle and pushes the rolling block out of the locking groove.
[0010] Preferably, the transmission mechanism includes:
[0011] A movable shaft is disposed inside the inner handle sleeve and is axially movable; the magnetic suction element is disposed at the end of the movable shaft and protrudes from the outside of the inner handle.
[0012] A limiting protrusion is provided on the outside of the movable shaft. The inner handle sleeve is provided with an axially extending guide hole. The inner wall of the inner handle base is provided with a spiral slit groove. The limiting protrusion passes through the guide hole and cooperates with the spiral slit groove. The inner handle sleeve and the inner handle base rotate relative to each other to drive the axial movement of the movable shaft.
[0013] A magnetic reset component is disposed between the movable shaft and the inner handle sleeve, and is used to reset the axial movement of the movable shaft.
[0014] Preferably, the connecting shaft is an axially through hollow structure, the drive shaft passes through the connecting shaft and can rotate relative to it, a knob wheel is fixedly connected inside the knob head, the end of the knob wheel is provided with a telescopic slot, one end of the drive shaft is assembled with a cam block, the other end of the drive shaft is inserted into the telescopic slot and can move relative to it axially, and the telescopic slot restricts the rotation of the drive shaft relative to the knob wheel.
[0015] Preferably, the knob dial is provided with a plug post, the telescopic slot is formed in the plug post, the drive shaft is inserted into the telescopic slot in the plug post, and the plug post is inserted into the connecting shaft and can rotate relative to it.
[0016] Preferably, the movable shaft is an axially penetrating knob sleeve, the limiting protrusion is integrally formed on the outside of the knob sleeve, the outer periphery of the knob head is provided with a shoulder, and the knob sleeve is provided with a limiting step that engages with the shoulder.
[0017] Preferably, the magnetic resetting component is a spring sleeved on the connecting shaft.
[0018] Preferably, it also includes an external lock assembly, which includes a lock cylinder and a lock cylinder cover plate mounted on the external handle sleeve, and the drive shaft is coaxially fixed with the lock cylinder.
[0019] Preferably, the outer handle sleeve is provided with a lock cylinder pad, the lock cylinder pad is located on one side of the cam block and the rolling block, the drive shaft passes through the shaft hole of the lock cylinder pad and has a snap-fit piece at its end, the lock cylinder has a lock cylinder slot for the snap-fit piece to be inserted, the snap-fit piece limits the lock cylinder pad and the cam block in the outer handle sleeve, and an axial gap is formed between the lock cylinder pad and the bottom wall of the outer handle sleeve for the rolling block to be accommodated.
[0020] Secondly, the present invention discloses a door lock structure with a linkage door catch and an inner lock knob, which includes the aforementioned handle structure with a linkage door catch and an inner lock knob and a lock body assembly. The outer handle base and the inner handle base are respectively fixed on both sides of the lock body assembly. The lock body assembly includes a lock tongue and a rotating seat that is linked with the lock tongue. The connecting shaft is assembled with the rotating seat and rotates synchronously.
[0021] Thirdly, the present invention discloses a door catch assembly with a linkage door catch and an inner lock knob head, which includes the handle structure of the linkage door catch and inner lock knob and a door catch base assembly. The door catch base assembly is provided with a magnetic component that magnetically engages with the magnetic component. One of the magnetic component and the magnetic component is a magnet and the other is a magnetically attractable material; or, both are magnets.
[0022] Compared with the prior art, the present invention has at least the following beneficial effects:
[0023] This invention integrates the door catch function into the handle by rotating the inner handle and driving the magnetic suction component to extend axially through the transmission mechanism. This eliminates the need to install door catch accessories separately on the door or wall, avoiding damage to the wall and door caused by repeated pulling. It also adapts to the limitation of ultra-narrow frame glass doors where external door catches cannot be installed. The knob drives the cam block through the transmission shaft to push the rolling block into the locking slot, realizing a pure handle-level internal lock. This eliminates the need for an independent square tongue and its transmission system inside the lock body, significantly reducing the thickness of the lock body, reducing the number of parts and costs. Moreover, the door catch release and internal locking actions are both completed within the coaxial handle, resulting in a compact structure and simple assembly, meeting the dual constraints of space and appearance for minimalist door panels. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the handle structure, door lock structure, and door catch assembly of a door catcher and inner lock knob according to the present invention.
[0025] Figure 2 for Figure 1 A split diagram;
[0026] Figure 3 This is an exploded view of the internal handle assembly of the present invention;
[0027] Figure 4 This is a schematic diagram of the structure of the inner handle base of the inner handle assembly of the present invention;
[0028] Figure 5 This is a schematic diagram of the structure of the inner handle assembly of the present invention after the inner handle base is hidden.
[0029] Figure 6 This is a partial cross-sectional schematic diagram of the inner handle assembly of the present invention;
[0030] Figure 7 This is an exploded view of the external handle assembly of the present invention;
[0031] Figure 8 This is a schematic diagram of the structure of the outer handle base of the outer handle assembly of the present invention;
[0032] Figure 9 This is a schematic diagram of the external handle assembly of the present invention after the external handle base is hidden;
[0033] Figure 10 This is a cross-sectional view of the handle structure of the present invention;
[0034] Figure 11 This is a schematic diagram of the connection structure between the connecting shaft and the transmission shaft of the present invention;
[0035] Figure 12 This is a schematic diagram of the knob and dial of the inner handle assembly of the present invention;
[0036] Figure 13This is an exploded view of the door catch base assembly of the present invention;
[0037] Figure 14 This is a schematic diagram of the installation of the present invention;
[0038] Figure 15 This is a schematic diagram of the door catch assembly of the present invention in the stopped position.
[0039] Figure 16 This is a schematic diagram of the door catch assembly of the present invention in the unlocked door catch state;
[0040] Figure 17 This is a schematic diagram of the door catch assembly of the present invention in the state of restoring the door catch.
[0041] Figure 18 This is a schematic diagram of the door lock structure of the present invention in the unlocked state;
[0042] Figure 19 This is a schematic diagram of the door lock structure of the present invention in the locked state;
[0043] Figure 20 for Figure 19 Another perspective view.
[0044] Explanation of icon numbers:
[0045] 100. Inner handle assembly;
[0046] 11. Inner handle; 111. Inner handle sleeve; 1111. Guide hole; 112. Inner handle cover; 113. Knob cover; 114. Knob sleeve; 1141. Limiting protrusion; 115. Knob head; 1151. Knob indicator; 116. Knob dial; 1161. Telescopic slot; 1162. Insertion post; 117. Knob compression spring;
[0047] 12. Inner handle base; 1201. Spiral cut groove; 121. Inner base cover plate; 122. Inner handle torsion spring; 123. Inner base pad; 124. Inner base retaining spring; 125. Through nut post;
[0048] 200. External handle assembly;
[0049] 21. External handle; 211. External handle sleeve; 2111. Side cavity; 212. Connecting shaft; 213. Cam block; 214. Rolling block; 215. Lock cylinder pad; 216. Drive shaft; 2161. Snap-fit piece; 217. Lock cylinder; 218. Lock cylinder cover plate; 219. External handle cover plate;
[0050] 22. Outer handle base; 2201. Locking slot; 221. Outer handle torsion spring; 222. Outer base pad; 223. Outer base retaining spring; 224. Through screw;
[0051] 300. Lock body assembly; 31. Lock tongue; 32. Rotary base;
[0052] 400. Door catch base assembly; 41. Door catch base cover plate; 42. Magnet component; 43. Door catch base compression spring; 44. Door catch fixing base;
[0053] 500. Door leaf;
[0054] 600. Walls. Detailed Implementation
[0055] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0056] This invention discloses a handle structure for a linked door catch and inner lock knob, referring to... Figure 1-2 The handle structure includes an inner handle assembly 100 and an outer handle assembly 200. The inner handle assembly 100 includes an inner handle base 12 and a rotatably mounted inner handle 11. The outer handle assembly 200 includes an outer handle base 22 and a rotatably mounted outer handle 21. The inner handle 11 and the outer handle 21 are coaxially fixed with a connecting shaft 212 to enable the three to rotate synchronously. It should be noted that, in addition to protecting the handle structure, this invention also protects the door lock structure containing the inner handle assembly 100, the outer handle assembly 200, and the lock body assembly 300 assembled with them, as well as the door catch assembly containing the aforementioned handle structure and the door catch base assembly 400.
[0057] Unlike most door lock structures on the market, the internal locking function of this solution does not rely on a square tongue independent of the oblique tongue and another complex linkage mechanism in the lock body. Instead, it modifies the door handle and achieves the internal locking function by locking the tongue. That is, the lock body component of this solution is designed with only a single tongue 31, a rotating seat 32 that rotates synchronously with the connecting shaft 212, and a conventional linkage mechanism that links the tongue 31 and the rotating seat 32. The outer contour of the connecting shaft 212 in this solution is a universal square bar. In addition, the inner handle base 12 and the outer handle base 22 are fixed to each other by installing through nut post 125 and through screw 224 and installed on both sides of the lock body component 300. By using a universal square bar and through screw structure, and not distinguishing between left and right doors, it can be adapted to conventional mortise lock body installation, with high compatibility. The lock body component 300 of this solution is a conventional mortise lock body, so the structure of the lock body component 300 will not be described in detail. The following describes the structure of the inner handle assembly 100 and the outer handle assembly 200, as well as the door suction unlocking assembly and the inner lock assembly that have been added as improvements.
[0058] The door catch unlocking assembly includes a magnetic attractor and a transmission mechanism. The inner handle 11 has an inner handle sleeve 111 that rotates and is fitted inside the inner handle base 12. The magnetic attractor is disposed in the inner handle sleeve 111 and can extend axially to cooperate with the door catch seat assembly 400 to magnetically attract and perform the door catch function. The transmission mechanism is configured to convert the rotational motion of the inner handle 11 into the linear motion of the magnetic attractor. Specifically, the transmission mechanism includes a movable shaft, a limiting protrusion 1141, and a magnetic resetting component. The movable shaft is located inside the inner handle sleeve 111 and can move axially. The magnetic resetting component is located at the end of the movable shaft and protrudes out of the outer side of the inner handle 11. The limiting protrusion 1141 is located on the outer side of the movable shaft. The inner handle sleeve 111 is provided with an axially extending guide hole 1111. The inner wall of the inner handle base 12 is provided with a helical groove 1201. The limiting protrusion 1141 passes through the guide hole 1111 and cooperates with the helical groove 1201. The inner handle sleeve 111 and the inner handle base 12 rotate relative to each other to drive the axial movement of the movable shaft. The magnetic resetting component is located between the movable shaft and the inner handle sleeve 111 and is used to reset the axial movement of the movable shaft.
[0059] The inner locking assembly includes a knob head 115, a cam block 213, a drive shaft 216, and a rolling block 214. The knob head 115 is fixed to the outside of the magnetic component or integrated with the magnetic component, and the knob head 115 can rotate relative to the inner handle sleeve 111. The outer handle 21 has an outer handle sleeve 211 that rotates accordingly and is fitted inside the outer handle base 22, and the cam block 213 is disposed in the outer handle sleeve 211. The drive shaft 216 is assembled with the knob head 115 and the cam block 213 to make the three rotate synchronously. The outer handle base 22 is provided with a locking groove 2201, and the outer handle sleeve 211 is provided with a side cavity 2111 corresponding to the locking groove 2201. The rolling block 214 is movably disposed in the side cavity 2111. The cam block 213 has a first position and a second position. When the cam block 213 is rotated to the first position by the knob head 115, it pushes the rolling block 214 to partially move out of the side cavity 2111 to form an engagement with the locking groove 2201, thus forming a locked state. When the cam block 213 is rotated to the second position by the knob head 115, it disengages from the limiting position of the rolling block 214 and releases the locked state. The outer handle sleeve 211 rotates with the outer handle 21. The side cavity 2111 wall of the outer handle sleeve 211 pushes the rolling block 214 to roll back along the inner arc surface of the locking groove 2201, disengaging from the locking groove 2201 and completely retracting into the outer handle sleeve 211.
[0060] Reference Figure 3-9In this embodiment, the movable shaft is an axially penetrating knob sleeve 114. A limiting protrusion 1141 is integrally formed on the outside of the knob sleeve 114. The guide hole 1111 of the inner sleeve 111 extends through to the edge so that the limiting protrusion 1141 can be inserted from the opening side. A knob cover plate 113 is installed on one side of the inner sleeve 111 to block the edge of the guide hole 1111. The outer periphery of the knob head 115 is provided with a shoulder, and the knob sleeve 114 is provided with a limiting step that engages with the shoulder. In addition, the knob head 115 is preferably designed to be made of a magnetically attractive material and is integrally formed with the magnetic component. That is, the knob head 115 replaces the magnetic component and cooperates with the door catch base assembly 400 to perform the door catch function. By adopting the above-mentioned shoulder and annular step combination, the knob head 115 itself can still rotate freely relative to the knob sleeve, so that the knob head 115 and the knob sleeve 114 can be decoupled in the circumferential direction. The rotation angle of the handle does not affect the angular position of the knob head 115, avoiding axial displacement caused by passive rotation, and improving the controllability and accuracy of operation.
[0061] This solution integrates the two functions of "door catch" and "internal lock" into the handle by designing a door catch unlocking component and an internal lock component. Driving the outer handle 21 to rotate simultaneously drives the inner handle 11 to rotate, which in turn drives the magnetic suction component to retract through the transmission mechanism, thereby releasing the magnetic attraction between the magnetic suction component and the door catch base. There is no need to install an additional door catch device on the door or the ground, and the door catch can be unlocked by simply turning the handle. This reduces the risk of traditionally having to forcefully pull the door catch open, protecting the door and wall from damage. In addition, rotating the knob head 115 drives the rolling block 214 to lock the outer handle 21, and the internal lock can be achieved using the original lock tongue. There is no need to modify the lock body component. The handle structure alone can complete the two tasks of "unlocking the door catch" and "locking the internal lock body". This simplifies the structure, saves space, and reduces costs. It can meet the special scenario where traditional bathroom minimalist glass doors usually use ultra-narrow metal frames, making it impossible to install and fix door catches or floor catches.
[0062] Reference Figure 10-12 In this embodiment, the connecting shaft 212 is an axially penetrating hollow square rod structure, and the transmission shaft 216 is a flat rod structure. The transmission shaft 216 passes through the connecting shaft 212 and can rotate relative to it. A knob wheel 116 is fixedly connected inside the knob head 115. The end of the knob wheel 116 is provided with a telescopic slot 1161 that matches the shape of the transmission shaft 216. One end of the transmission shaft 216 is fixed to the cam block 213, and the other end of the transmission shaft 216 is inserted into the telescopic slot 1161 and can move relative to it axially. The telescopic slot 1161 restricts the rotation of the transmission shaft 216 relative to the knob wheel 116.
[0063] By adopting the above design, and with the help of the "sleeve-type" cooperation between the drive shaft 216 and the connecting shaft 212, the knob head 115 can rotate independently to drive the cam block 213 without interfering with the rotation unlocking door catch function of the inner and outer handles. At the same time, the design of the telescopic slot 1161 ensures that the knob head 115 is not hindered by the drive shaft 216 when it moves axially to unlock the door catch. This solves the structural contradiction that is difficult for commercial products to solve: "the same knob head must simultaneously bear the dual-degree-of-freedom movement of 'axial door catch unlocking' and 'circumferential locking', while the two sets of motion chains need to be arranged coaxially and do not interfere with each other." Traditional solutions either separate the locking and door catch into two places, increasing the thickness of parts and lock body, or set up a complex linkage mechanism inside the handle, resulting in assembly difficulties and easy jamming. However, the sleeve-type force flow separation design of this solution puts the unlocking thrust and locking torque on the same composite shaft system, "coaxial but not on different paths", so that the minimalist structure and multi-functional integration can be taken into account.
[0064] As a preferred option, refer to Figure 10-12 The rotary dial 116 has a plug-in post 1162, and a telescopic slot 1161 is opened in the plug-in post 1162. The drive shaft 216 is inserted into the telescopic slot 1161 in the plug-in post 1162, and the plug-in post 1162 is inserted into the connecting shaft 212 and can rotate relative to it. In this way, the support span of the drive shaft 216 is shortened to the range of the plug-in post 1162, effectively reducing the cantilever bending moment. When the knob head 115 is moved to the end, the drive shaft 216 can still maintain a high coaxiality with the cam block 213, avoiding the "half-contact" false locking problem when the rolling block 214 is locked. At the same time, the outer circle of the plug-in post 1162 and the inner hole of the connecting shaft 212 form a second sliding bearing, making the axial movement of the knob head 115 smoother. It does not require additional copper sleeves or bearings, the number of parts increases by zero, the assembly direction is consistent with the original sequence, and the appearance integrity is not damaged.
[0065] As a preferred embodiment, the magnetic reset component is a spring (hereinafter referred to as the knob compression spring 117) sleeved outside the plug post 1162. One end of the knob compression spring 117 abuts against the knob dial 116, and the other end abuts against the bottom wall of the inner handle sleeve 111, forming an axial reset structure. This structure provides a restoring force for the axial extension of the knob head 115 and uses the plug post 1162 as a built-in guide spindle to prevent the knob compression spring 117 from buckling or shifting laterally when compressed, thus avoiding abnormal noise. At the same time, the knob compression spring 117 is located inside the cavity of the inner handle sleeve 111 and does not occupy additional radial dimensions, allowing the outer diameter of the handle to maintain the mainstream specifications. In addition, the knob compression spring 117 built into the inner handle can effectively buffer the impact force when pushing and stopping the door, protecting the door leaf and the wall.
[0066] As a preferred option, refer to Figure 10-11The handle structure of this solution further includes an external lock assembly, which includes a lock cylinder 217 and a lock cylinder cover plate 218. The lock cylinder cover plate 218 is installed and fixed on the outer handle sleeve 211. The lock cylinder 217 is located inside the outer handle sleeve 211 and is rotatably connected to the lock cylinder cover plate 218. The drive shaft 216 is coaxially fixed with the lock cylinder 217. When the inner door is locked, a key can be used on the lock cylinder 217. When the lock cylinder 217 rotates, it directly drives the cam block 213 to rotate through the drive shaft 216. In this way, it can be unlocked by the key from the outside without relying on the knob head 115. This improves the flexibility and security of use. An outer handle cover plate 219 can be detachably installed on the outside of the outer handle 21, which can be used to cover the external lock assembly, improving the dustproof effect and aesthetics. Similarly, an inner handle cover plate 112 can also be detachably installed on the outside of the inner handle 11.
[0067] As a preferred embodiment, the outer handle sleeve 211 is provided with a lock cylinder pad 215. The lock cylinder pad 215 has a shaft hole and is located on the side of the cam block 213 and the rolling block 214 opposite to the bottom wall of the outer handle sleeve 211. The drive shaft 216 passes through the shaft hole of the lock cylinder pad 215 and has an integrally formed end with a snap-fit piece 2161 with a width greater than the shaft hole of the lock cylinder pad 215. The lock cylinder 217 is provided with a lock cylinder slot for the snap-fit piece 2161 to be inserted into, and the lock cylinder slot restricts the snap-fit piece 2161. 1. The lock cylinder 217 moves axially and rotates circumferentially. The locking piece 2161 limits the lock cylinder pad 215 and the cam block 213 within the outer handle sleeve 211. An axial gap is formed between the lock cylinder pad 215 and the bottom wall of the outer handle sleeve 211 for the rolling block 214 to be accommodated. The end of the connecting shaft 212 is provided with a shoulder. The outer handle sleeve 211 is provided with a limiting step that matches and engages with the shoulder. The shoulder at the end of the connecting shaft 212 is held between the bottom wall of the outer handle sleeve 211 and the cam block 213. The connecting shaft 212, cam block 213, rolling block 214, and lock cylinder pad 215 can be placed sequentially inside the outer handle sleeve 211, and then inserted into the drive shaft 216 to complete the positioning. The shaft hole of the lock cylinder pad 215 is reversed by the hanging snap-fit piece 2161 to prevent the drive shaft 216 from disengaging. Then, the lock cylinder 217 and lock cylinder cover plate 218 are installed by aligning the snap-fit piece 2161 to complete the assembly. In this way, the drive shaft 216 and its snap-fit piece 2161 simultaneously complete torque transmission and axial clamping. The lock cylinder pad 215 is composed of the cam block 213 and the rolling block 214. The end face support is provided to ensure that the rolling block 214 is not affected by axial movement when it is radially extended and retracted, and the axial clearance is only the thickness of the rolling block plus a small amount of clearance. This ensures that the peak of the cam block 213 can push the rolling block 214 into the locking slot 2201 throughout the entire process, and also prevents the rolling block 214 from being pulled out or stuck when unlocking. The drive shaft snap plate 2161, the lock core pad 215, the cam block 213 and the rolling block 214, and the connecting shaft 212 are axially clamped in sequence to form a self-balancing closed chain. The assembly structure is ingeniously designed, which is convenient for assembly and the assembly relationship is stable and reliable.
[0068] As a preferred embodiment, an inner handle torsion spring 122 is installed inside the inner handle assembly. Both ends of the inner handle torsion spring 122 are respectively secured in the limiting grooves of the inner handle base 12. One end of the inner handle base 12 is formed by a split inner base cover plate 121 to form its bottom wall, so that the components can be installed on one side to form axial support. The inner base cover plate 121, the inner handle torsion spring 122, and the inner base pad 123 are sequentially assembled on the end of the inner handle sleeve 111 and axially pressed by the inner base retaining spring 124 to complete the installation of the inner handle torsion spring 122 and realize the automatic reset after the inner handle is rotated. Similarly, the outer handle assembly is also equipped with an outer handle torsion spring 221, an outer base pad 222, and an outer base retaining spring 223 with the same structure, so that both the inner and outer handles can automatically return to their positions after being pressed down and rotated, improving the operating feel and ease of use.
[0069] Reference Figure 13-14 The door catch base assembly 400 includes a magnetic component 42 that magnetically engages with the magnetic suction component. One of the magnetic component 42 and the magnetic suction component is a magnet, and the other is a magnetically attractable material; or both are magnets. By using the magnetic suction component integrated into the inner handle, the door catch function can be achieved simply by fixing the door catch base assembly 400 to the wall 600. Specifically, the door catch base assembly 400 includes a door catch base cover 41, a magnetic component 42, a magnetic elastic component (specifically, a spring, hereinafter referred to as a door catch base compression spring 43), and a door catch fixing seat 44. In this embodiment, the magnetic component 42 of the door catch base assembly 400 serves as the magnet, and correspondingly, the magnetic suction component of the door catch unlocking assembly serves as the magnetically attractable component. Of course, in other embodiments, the magnetic suction component of the door catch unlocking assembly may also serve as the magnet, and correspondingly, the magnetic component of the door catch base assembly 400 may serve as the magnetically attractable component. The door catch fixing seat 44 is threadedly connected to the door catch base cover plate 41 and forms an internal mounting cavity. The magnet 42 is disposed in the mounting cavity and can move axially. The door catch base cover plate 41 has an opening for the magnet 42 to extend out and restrict its disengagement. The door catch base compression spring 43 is disposed in the mounting cavity. One end of the door catch base compression spring 43 acts on the door catch fixing seat 44 and the other end abuts against the magnet 42, which is used to press the magnet 42 against one side of the door catch base cover plate 41. By threading the door catch base cover plate 41 to the door catch fixing seat 44, and setting an axially movable magnet 42 and a door catch base compression spring 43 abutting its tail end in the mounting cavity formed by the two, the extension distance of the magnet 42 can be adjusted by simply turning the door catch base cover plate 41, thereby adapting to different door-to-wall spacing for door stopping. The product has a wide range of applications. In addition, the door catch base compression spring 43 built into the door catch base can effectively buffer the impact force when pushing and stopping the door, protecting the door leaf and the wall.
[0070] The door catch unlocking function of this solution works as follows:
[0071] (1)Reference Figure 15When the door is opened to the stop position, the knob head 115 of the inner handle assembly 100 is attracted and fixed by the door suction base assembly 400, thereby realizing the door leaf parking function. In this state, the knob head 115 is fully extended under the action of the knob compression spring 117, and the outer limiting protrusion 1141 on the knob sleeve 114 is also pushed to the end of the guide hole 1111 on the inner handle 11. The spiral sectional groove 1201 on the inner side of the cavity of the inner handle base 12 does not act on the limiting protrusion 1141.
[0072] (2)Reference Figure 16 If the door needs to be pulled back, press down and rotate the outer handle 21 (same as the normal unlocking action). Since the outer handle base 22 is fixed to the door 500, the outer handle 21 is pressed down and rotated, thereby driving the connecting shaft 212 to rotate, which is transmitted to the inner handle assembly 100. The inner handle base 12 is fixed to the door 500, thereby causing the inner handle 11 to be pressed down and rotated relative to the door 500. The corresponding inner handle 11 should drive the upper knob sleeve 114 to rotate downwards. At this time, the knob sleeve 114 contacts the spiral groove 1201 inside the cavity of the fixed inner handle base 12, so that the knob sleeve is squeezed by the spiral groove 1201. Due to the presence of the guide hole 1111 of the inner handle 11, the knob sleeve 114 rotates synchronously with the inner handle 11 in the circumferential direction. The limiting protrusion 1141 is unrestrained in the axial direction towards the inner end. Under the pressure of the spiral groove 1201 inside the cavity of the inner handle base 12, the knob sleeve 114 moves towards the door leaf end in the axial direction, thereby driving the knob head 115 to also move towards the door leaf end in the axial direction, so that it is disengaged from the door catch base assembly 400 fixed on the wall 600, realizing door catch unlocking and the door leaf leaving the parking position.
[0073] (3)Reference Figure 17 When the handle is released or the downward rotational force is removed, the outer handle 21 and the inner handle 11 return to their original positions under the action of the corresponding outer handle torsion spring 221 and inner handle torsion spring 122, respectively. This causes the knob sleeve 114 to rotate. Under the action of the knob compression spring 117, the knob head 115 moves along the inner handle guide hole 1111 towards the end away from the door leaf, and the knob head 115 is fully extended. When the door is opened to the stop position, the knob head 115 of the inner handle assembly 100 is attracted and fixed by the door suction base assembly 400, thereby realizing the door leaf parking function.
[0074] The internal locking function of this solution works as follows:
[0075] (1)Reference Figure 17When the door is closed, the latch 31 extends and the door lock is in an unlocked state. At this time, the knob indicator 1151 of the indoor knob head 115 is horizontal, and the rolling block 214 inside the outer handle 21 is completely inside the cavity 2111 on the side of the outer handle. It can rotate relative to the outer handle base 22 along with the outer handle 21. That is, both the inner and outer handles can rotate the lock body assembly 300, and the door lock is in a normally open and unlocked state.
[0076] (2)Reference Figure 18-20 To lock the door, the key can be used to turn the lock cylinder 217 from the outside or the knob head 115 from the inside, causing the knob indicator 1151 of the knob head 115 to turn from the horizontal position to the vertical position. This causes the knob wheel 116 to rotate within the internal cavity of the knob sleeve 114, driving the drive shaft 216 to rotate the cam block 213 by 90°. This causes the rolling block 214 to be squeezed between the side cavity 2111 of the outer handle 21 and the locking groove 2201 of the outer handle base 22. If external force is applied to operate the handle at this time, the rolling block 214 and the cam block 213 will mutually limit each other, causing the outer handle 21 and the outer handle base 22 to be restricted and locked, thus locking the door.
[0077] (3) To unlock the door, use the key to turn the lock cylinder 217 or the knob head 115 to operate in the opposite direction so that the inner knob indicator 1151 is in the horizontal position. Then the transmission shaft 216 can drive the cam block 213 to rotate in the opposite direction by 90°, so that the rolling block 214 is horizontally constrained and slides into the side cavity 2111 of the outer handle sleeve 211. At this time, if an external force is applied to operate the handle, the rolling block 214 will rotate together with the outer handle 21, that is, the handle is unconstrained and can be operated to unlock.
[0078] The technical solution provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A handle structure for a linked door closer and inner lock knob, comprising an inner handle assembly, an outer handle assembly, and a connecting shaft, wherein the inner handle assembly includes an inner handle base and a rotatably mounted inner handle, the outer handle assembly includes an outer handle base and a rotatably mounted outer handle, and the connecting shaft is coaxially fixed to the inner handle and the outer handle to enable the three to rotate synchronously, characterized in that... Also includes: A door catch unlocking assembly includes a magnetic attractor and a transmission mechanism; the inner handle has an inner handle sleeve that rotates and is fitted inside the inner handle base; the magnetic attractor is disposed in the inner handle sleeve and can extend axially; the transmission mechanism is configured to convert the rotational motion of the inner handle into the linear motion of the magnetic attractor. The inner locking assembly includes a knob head, a cam block, a drive shaft, and a rolling block. The knob head is fixed to or integrated with the magnetic suction component and can rotate relative to the inner handle sleeve. The outer handle has an outer handle sleeve that rotates with it and is fitted inside the outer handle base. The cam block is rotatably disposed in the outer handle sleeve. The drive shaft is assembled with the knob head and the cam block to make the three rotate synchronously. The outer handle base is provided with a locking groove. The outer handle sleeve is provided with a side cavity corresponding to the locking groove. The rolling block is movably disposed in the side cavity. The cam block has a first position and a second position. When the cam block is rotated to the first position by the knob head, it pushes part of the rolling block out of the side cavity to form an engagement with the locking groove, thus forming a locked state. When the cam block is rotated to the second position by the knob head, it disengages from limiting the rolling block and releases the locked state. The outer handle sleeve rotates with the outer handle and pushes the rolling block out of the locking groove.
2. The handle structure of the linkage door catch and inner lock knob according to claim 1, characterized in that, The transmission mechanism includes: A movable shaft is disposed inside the inner handle sleeve and is axially movable; the magnetic suction element is disposed at the end of the movable shaft and protrudes from the outside of the inner handle. A limiting protrusion is provided on the outside of the movable shaft. The inner handle sleeve is provided with an axially extending guide hole. The inner wall of the inner handle base is provided with a spiral slit groove. The limiting protrusion passes through the guide hole and cooperates with the spiral slit groove. The inner handle sleeve and the inner handle base rotate relative to each other to drive the axial movement of the movable shaft. A magnetic reset component is disposed between the movable shaft and the inner handle sleeve, and is used to reset the axial movement of the movable shaft.
3. The handle structure of the linkage door closer and inner lock knob according to claim 1, characterized in that, The connecting shaft is an axially through hollow structure. The drive shaft passes through the connecting shaft and can rotate relative to it. A knob wheel is fixedly connected inside the knob head. The end of the knob wheel is provided with a telescopic slot. One end of the drive shaft is assembled with a cam block. The other end of the drive shaft is inserted into the telescopic slot and can move axially relative to it. The telescopic slot restricts the rotation of the drive shaft relative to the knob wheel.
4. The handle structure of the linkage door closer and inner lock knob according to claim 3, characterized in that, The rotary dial is provided with a plug, the telescopic slot is opened in the plug, the drive shaft is inserted into the telescopic slot in the plug, and the plug is inserted into the connecting shaft and can rotate relative to it.
5. The handle structure of the linkage door closer and inner lock knob according to claim 2, characterized in that, The movable shaft is an axially penetrating knob sleeve. The limiting protrusion is integrally formed on the outside of the knob sleeve. The outer periphery of the knob head is provided with a shoulder. The knob sleeve is provided with a limiting step that engages with the shoulder.
6. The handle structure of the linkage door closer and inner lock knob according to claim 2, characterized in that, The magnetic reset component is a spring sleeved on the outside of the connecting shaft.
7. The handle structure of the linkage door catch and inner lock knob according to claim 1, characterized in that, It also includes an external locking assembly, which includes a lock cylinder and a lock cylinder cover plate mounted on the external handle sleeve, and the drive shaft is coaxially fixed with the lock cylinder.
8. The handle structure of the linkage door catch and inner lock knob according to claim 7, characterized in that, The outer handle sleeve is provided with a lock cylinder pad, which is located on one side of the cam block and the rolling block. The drive shaft passes through the shaft hole of the lock cylinder pad and has a snap-fit piece at its end. The lock cylinder is provided with a lock cylinder slot for the snap-fit piece to be inserted. The snap-fit piece limits the lock cylinder pad and the cam block to be positioned inside the outer handle sleeve. An axial gap is formed between the lock cylinder pad and the bottom wall of the outer handle sleeve for the rolling block to be accommodated.
9. A door lock structure that links a door closer with an inner lock knob, characterized in that, The lock body assembly includes the handle structure and lock body assembly of the linkage door catch and inner lock knob as described in any one of claims 1-8, wherein the outer handle base and the inner handle base are respectively fixed on both sides of the lock body assembly, the lock body assembly includes a lock tongue and a rotating seat that is linked with the lock tongue, and the connecting shaft is assembled with the rotating seat and rotates synchronously.
10. A door catch assembly with a linked door catch and an inner locking knob head, characterized in that, The invention includes the handle structure of the linkage door catch and inner lock knob as described in any one of claims 1-8, and the door catch base assembly. The door catch base assembly is provided with a magnetic component that magnetically engages with the magnetic component. One of the magnetic component and the magnetic component is a magnet, and the other is a material that can be magnetically attracted; or, both are magnets.