A rack-type lock

Abstract

The utility model discloses a rack type locking door lock for installing on the door panel control door panel open and shut, including the inside handle of installing in the inboard of door panel and the outside handle of installing on the outside of door panel with inside handle rotation connection, the outside handle includes the unlocking device, the inside handle includes the locking device of fixed mounting on the door panel and with the anti -lock device rotation connection of unlocking device, the anti -lock device includes with the anti -lock gear of unlocking device rotation connection, and with the anti -lock rack for controlling the locking device and the relative rotation of anti -lock device with anti -lock gear engagement. By locking portion concentration on the inside handle, when locking, the anti -lock device forms the locking with the locking device, limits the relative rotation of inside handle with the outside handle, makes the control between the anti -lock device and the locking device more stable.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a rack and pinion locking door lock. Background Technology

[0002] Door locks are common door security devices, primarily used to prevent unauthorized intrusion. They typically consist of four parts: the lock body, the inner handle, the outer handle, and the deadbolt mechanism. The inner and outer handles are installed on the inside and outside of the door, respectively, allowing users to operate them from both inside and outside. The deadbolt mechanism, as the core internal component of the lock, is designed to enhance the privacy of the interior space. Through physical limiting or mechanical locking mechanisms, it forms an additional protective layer on the inside, effectively enhancing residential security and privacy.

[0003] However, existing door locks often have the locking part set independently of the inner handle, which results in the force being dispersed when pressed down in the locked state. Over time, this can easily lead to loosening, jamming, or even failure, especially when frequently opened and closed or subjected to external impacts, resulting in insufficient stability. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a rack and pinion locking door lock.

[0005] This utility model is achieved by the following technical solution: A rack and pinion locking door lock is used to control the opening and closing of a door panel. It includes an inner handle installed on the inner side of the door panel and an outer handle installed on the outer side of the door panel and rotatably connected to the inner handle. The outer handle includes an unlocking device. The inner handle includes a locking device fixedly installed on the door panel and a deadbolt device rotatably connected to the unlocking device. The deadbolt device includes a deadbolt gear rotatably connected to the unlocking device and a deadbolt rack meshing with the deadbolt gear for controlling the relative rotation of the locking device and the deadbolt device.

[0006] By concentrating the locking part on the inner handle, when locked, the anti-locking device and the locking device form a lock, restricting the relative rotation of the inner handle and the outer handle, making the control between the anti-locking device and the locking device more stable.

[0007] As described above, in the rack and pinion locking door lock, there are multiple locking elements between the locking device and the deadbolt device, which are driven and controlled by the deadbolt rack. One side of the locking device is provided with a mounting hole for fixed installation with the door panel, and the other side of the locking device is provided with multiple locking holes that cooperate with the locking elements.

[0008] As described above, the rack and pinion locking door lock includes a deadbolt body rotatably connected to the unlocking device and a gear portion disposed on one side of the deadbolt body. The deadbolt rack includes a rack portion that meshes with the gear teeth of the gear portion and a drive portion for driving and controlling the locking member.

[0009] As described above, the rack and pinion locking door lock includes a locking pin corresponding to the locking hole and a mating part that cooperates with the driving part, and a spring is provided on the locking pin.

[0010] As described above, in the rack and pinion locking door lock, the mating part is a columnar structure with a conical top on one side, and the driving part is a block-shaped structure with a wedge-shaped surface that mates with the conical top structure of the mating part.

[0011] As described above, the rack and pinion locking door lock has two pairs of continuous arc-shaped structures for locking on the deadbolt device, and the deadbolt rack has locking parts corresponding to the arc-shaped structures.

[0012] As described above, in the rack and pinion locking door lock, the deadbolt rack is provided with an unlocking element for manual operation of unlocking / locking, and the deadbolt device is provided with a through hole corresponding to the unlocking element.

[0013] As described above, in the rack and pinion locking door lock, the locking component is a structure with good elasticity and rigidity that corresponds to the arc-shaped structure.

[0014] In the rack and pinion locking door lock described above, the unlocking element is a protruding structure that can move within the through hole.

[0015] As described above, in the rack and pinion locking door lock, a hollow square shaft is provided between the inner handle and the outer handle to connect the two. The unlocking device includes a lock cylinder and a flat iron connected to the lock cylinder. The flat iron is fixedly connected to the anti-lock gear and is located inside the square shaft.

[0016] Compared with the prior art, the rack and pinion locking door lock proposed in this utility model has the following beneficial effects: 1. This utility model concentrates the locking part on the inner handle. When locked, the anti-locking device and the locking device form a lock, restricting the relative rotation of the inner handle and the outer handle, making the control between the anti-locking device and the locking device more stable. 2. The arc-shaped structure ensures that the anti-locking rack remains stationary when unlocking or locking, and has a self-locking function. The unlocking component can then complete the locking and unlocking actions, making the structure of the anti-locking mechanism more stable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a structural schematic diagram of the present invention from one perspective; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 for Figure 2 Partially exploded diagram; Figure 4 for Figure 3 A magnified view of region A; Figure 5 for Figure 2 A schematic diagram of the explosion decomposition from a specific perspective; Figure 6 for Figure 5 Enlarged schematic diagram of region B; Figure 7 for Figure 5 Enlarged schematic diagram of region C; Figure 8 for Figure 5 A diagram from another perspective; Figure 9 This is a schematic diagram of the anti-locking rack of this utility model; Figure 10 This is a structural schematic diagram from another perspective of the present invention; Figure 11 This is a working state of the present invention. Figure 10 DD cross-sectional view; Figure 12 for Figure 11 Enlarged schematic diagram of region E; Figure 13 This is another working state of the present invention. Figure 10 DD cross-sectional view; Figure 14 for Figure 13 A magnified schematic diagram of region F.

[0019] The corresponding reference numerals in the attached figures are as follows: 1. Inner handle; 11. Locking device; 111. Mounting hole; 112. Locking hole; 12. Reverse locking device; 121. Reverse locking gear; 1211. Reverse locking body; 1212. Gear part; 122. Reverse locking rack; 1221. Rack part; 1222. Drive part; 1223. Locking part; 1224. Unlocking part; 123. Arc-shaped structure; 124. Through hole; 125. Mounting hole; 126; 13. Locking part; 131. Locking pin; 132. Fitting part; 133. Spring; 2. Outer handle; 21. Unlocking device; 211. Lock cylinder; 212. Flat iron; 3. Square shaft. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Specific embodiments, combined with Figures 1 to 14 The technical solution of this utility model is further illustrated below. Overall, this rack and pinion locking door lock includes an inner handle 1 installed on the inner side of the door panel and an outer handle 2 installed on the outer side of the door panel and rotatably connected to the inner handle 1. The outer handle 2 includes an unlocking device 21. The inner handle 1 includes a locking device 11 fixedly installed on the door panel and a deadbolt device 12 rotatably connected to the unlocking device 21. The deadbolt device 12 includes a deadbolt gear 121 rotatably connected to the unlocking device 21 and a deadbolt rack 122 meshing with the deadbolt gear 121 for controlling the relative rotation of the locking device 11 and the deadbolt device 12. This rack and pinion locking door lock is used to control the opening and closing of the door panel when installed on the door panel. By concentrating the locking part on the inner handle 1, when locked, the deadbolt device 12 and the locking device 11 form a lock, restricting the relative rotation of the inner handle 1 and the outer handle 2, making the control between the deadbolt device 12 and the locking device 11 more stable.

[0022] When the outer handle 2 is unlocked / locked by the unlocking device 21, the anti-locking device 12 is driven to operate, and the anti-locking gear 121 drives the anti-locking rack 122 to operate, thereby the anti-locking rack 122 unlocks / restricts the relative rotation between the inner handle 1 and the outer handle 2.

[0023] Based on the overall design concept described above, a plurality of locking elements 13, driven and controlled by the anti-locking rack 122, are provided between the locking device 11 and the anti-locking device 12. One side of the locking device 11 has a mounting hole 111 for fixed installation with the door panel, and the other side has a plurality of locking holes 112 that cooperate with the locking elements 13. When the locking element 13 is driven by the anti-locking rack 122 and inserted into the mounting hole 111, the relative rotation between the outer handle 2 and the inner handle 1 is restricted, thus achieving a locking action. When the locking element 13 disengages from the mounting hole 111, the relative rotation between the outer handle 2 and the inner handle 1 resumes, thus achieving an unlocking action.

[0024] Specifically, the anti-locking gear 121 includes an anti-locking body 1211 rotatably connected to the unlocking device 21 and a gear portion 1212 disposed on one side of the anti-locking body 1211. The anti-locking rack 122 includes a rack portion 1221 meshing with the teeth of the gear portion 1212 and a driving portion 1222 for driving and controlling the locking member 13. The anti-locking gear 121 and the anti-locking rack 122 achieve transmission through the meshing of the gear portion 1212 and the rack portion 1221, and drive the driving portion 1212 to move, thereby realizing the locking or unlocking action of inserting or disengaging the locking member 13 into or out of the locking hole 112.

[0025] To further enhance the performance of the rack and pinion locking door lock, specifically, the locking member 13 includes a locking pin 131 corresponding to the locking hole 112 and a mating part 132 cooperating with the drive part 1222. A spring 133 is provided on the locking pin 131. The deadbolt device 12 also includes a mounting hole 125 for mounting the locking member 13 and a movable hole 126 for accommodating the locking pin 131. The inner diameter of the movable hole 126 is smaller than the inner diameter of the locking pin 131, so that when the locking member 13 is pressed, the locking pin 131 enters the locking hole 112 through the movable hole 126 to lock, restricting the relative rotation of the inner handle 1 and the outer handle 2. When unlocked, the locking pin 131 disengages from the locking hole 112, and the spring 133 provides a reset function, allowing the relative rotation of the inner handle 1 and the outer handle 2 to unlock the door.

[0026] It should be noted that, based on the above overall design concept, the technical solution of this application can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, the mating part 132 is a columnar structure with a conical top on one side, and the driving part 1222 is a block-shaped structure with a wedge-shaped surface that mates with the conical top structure of the mating part 132.

[0027] Specifically, the deadbolt device 12 has two pairs of continuous arc-shaped structures 123 for locking, the deadbolt rack 122 has locking members 1223 corresponding to the arc-shaped structures 123, the deadbolt rack 122 has unlocking members 1224 for manual unlocking / locking, and the deadbolt device 12 has through holes 124 corresponding to the unlocking members 1224. The arc-shaped structures 123 can ensure that the deadbolt rack 122 remains stationary when unlocking or locking. In addition, a continuous structure can be provided on one side of the arc-shaped structure 123 to provide multiple locking states for the door lock.

[0028] It should be noted that, based on the above overall design concept, the technical solution of this application can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, the locking member 1223 is a structure made of elastic and rigid materials corresponding to the arc-shaped structure 123; the unlocking member 1224 is a protruding structure that can move within the through hole 124.

[0029] To further enhance the performance of the rack and pinion locking door lock, specifically, a hollow square shaft 3 is provided between the inner handle 1 and the outer handle 2 to connect them. The unlocking device 21 includes a lock cylinder 211 and a flat iron 212 connected to the lock cylinder 211. The flat iron 212 is fixedly connected to the anti-lock gear 121 and is located inside the square shaft 3. When locked, the lock cylinder 211 drives the flat iron 212, which in turn drives the anti-lock gear 121. The anti-lock gear 121 then drives the anti-lock rack 122. The driving part 1222 of the anti-lock rack 122 pushes the locking pin 131 into the locking hole 112 through the mating part 132 of the locking member 13, thereby locking the inner handle 1 and the outer handle 2. When unlocked, the lock cylinder 211 drives the flat iron 212... 12. When the flat iron 212 drives the anti-locking gear 121 to move, the anti-locking gear 121 drives the anti-locking rack 122 to move, the driving part 1222 of the anti-locking rack 122 moves, and the pressure on the mating part 132 is released. The locking member 13 disengages from the locking hole 112 under the rebound action of the spring 133. At this time, the inner handle 1 and the outer handle 2 are unlocked, and the outer handle 2 can drive the inner handle 1 to rotate through the square shaft 3.

[0030] The working principle of this embodiment is as follows: This utility model proposes a rack and pinion locking door lock, which, by concentrating the locking part on the inner handle 1, makes the control between the deadbolt device 12 and the locking device 11 more stable. Its specific working principle is as follows: When locked, the flat iron 212 is driven by the control lock cylinder 211, which in turn drives the anti-lock gear 121. The anti-lock gear 121 then drives the anti-lock rack 122. The drive part 1222 of the anti-lock rack 122 pushes the locking pin 131 into the locking hole 112 through the mating part 132 of the locking member 13, thus locking the inner handle 1 and the outer handle 2. When unlocked, the flat iron 212 is driven by the lock cylinder 211, which in turn drives the anti-lock gear 121. The anti-lock gear 121 then drives the anti-lock rack 122, causing the drive part 1222 of the anti-lock rack 122 to move and release the pressure on the mating part 132. The locking member 13 then disengages from the locking hole 112 under the rebound of the spring 133. At this time, the inner handle 1 and the outer handle 2 are unlocked, and the outer handle 2 can drive the inner handle 1 to rotate through the square shaft 3.

Claims

1. A rack and pinion locking door lock, used for mounting on a door panel to control the opening and closing of the door panel, characterized in that, The device includes an inner handle (1) installed on the inside of the door panel and an outer handle (2) installed on the outside of the door panel and rotatably connected to the inner handle (1). The outer handle (2) includes an unlocking device (21). The inner handle (1) includes a locking device (11) fixedly installed on the door panel and a deadbolt device (12) rotatably connected to the unlocking device (21). The deadbolt device (12) includes a deadbolt gear (121) rotatably connected to the unlocking device (21) and a deadbolt rack (122) meshing with the deadbolt gear (121) for controlling the relative rotation of the locking device (11) and the deadbolt device (12).

2. The rack and pinion locking door lock according to claim 1, characterized in that, The locking device (11) and the anti-locking device (12) are provided with a plurality of locking elements (13) driven and controlled by the anti-locking rack (122). The locking device (11) has a mounting hole (111) on one side for fixed installation with the door panel, and a plurality of locking holes (112) that cooperate with the locking elements (13) on the other side.

3. The rack and pinion locking door lock according to claim 2, characterized in that, The anti-locking gear (121) includes an anti-locking body (1211) rotatably connected to the unlocking device (21) and a gear part (1212) disposed on one side of the anti-locking body (1211). The anti-locking rack (122) includes a rack part (1221) meshing with the gear teeth of the gear part (1212) and a drive part (1222) for driving and controlling the locking member (13).

4. The rack and pinion locking door lock according to claim 3, characterized in that, The locking member (13) includes a locking post (131) corresponding to the locking hole (112) and a mating part (132) that cooperates with the driving part (1222). A spring (133) is provided on the locking post (131).

5. The rack and pinion locking door lock according to claim 4, characterized in that, The mating part (132) is a columnar structure with a conical top on one side, and the driving part (1222) is a block-shaped structure with a wedge-shaped surface that mates with the conical top structure of the mating part (132).

6. The rack and pinion locking door lock according to claim 1, characterized in that, The anti-locking device (12) is provided with two pairs of continuous arc-shaped structures (123) for locking, and the anti-locking rack (122) is provided with locking parts (1223) corresponding to the arc-shaped structures (123).

7. The rack and pinion locking door lock according to claim 1, characterized in that, The anti-lock rack (122) is provided with an unlocking element (1224) for manual operation of unlocking / locking, and the anti-lock device (12) is provided with a through hole (124) corresponding to the unlocking element (1224).

8. The rack and pinion locking door lock according to claim 6, characterized in that, The locking component (1223) is a structure made of elastic and rigid materials that corresponds to the arc-shaped structure (123).

9. The rack and pinion locking door lock according to claim 7, characterized in that, The unlocking element (1224) is a protruding structure that can move within the through hole (124).

10. The rack and pinion locking door lock according to any one of claims 1-9, characterized in that, The inner handle (1) and the outer handle (2) are provided with a hollow square shaft (3) for connecting the two. The unlocking device (21) includes a lock cylinder (211) and a flat iron (212) connected to the lock cylinder (211). The flat iron (212) is fixedly connected to the anti-lock gear (121). The flat iron (212) is located inside the square shaft (3).

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