A linkage door handle lock

Abstract

The present invention discloses a linkage handle lock, comprising: a front lock body provided with a front handle; a rear lock body provided with a rear handle; a first connecting rod, one end of which is connected to the rear handle and the other end of which is connected to the front handle through a clutch mechanism; a first output shaft, the distance between which and the rotating shaft of the rear handle is a first center distance; a second output shaft, the distance between which and the rotating shaft of the rear handle is a second center distance; a gear set, which is drivingly connected between the first connecting rod, the first output shaft and the second output shaft; a second connecting rod, which is installed on the first output shaft or the second output shaft; a bevel tongue assembly and a dead tongue assembly, which are located between the front lock body and the rear lock body, and one of the bevel tongue assembly and the dead tongue assembly is connected to the first connecting rod and the other is connected to the second connecting rod. The above-mentioned linkage handle lock drives the first connecting rod, the first output shaft and the second output shaft to rotate synchronously through the gear set, simplifies the product structure, provides two output specifications of the first center distance and the second center distance, and expands the applicable range of the product.

Description

Technical Field

[0001] The present invention relates to a linkage handle lock. Background Art

[0002] In some countries or regions, in order to meet the requirements of convenient use and safety, handle locks are required to have both a diagonal locking tongue and a dead locking tongue to meet safety regulations. Among them, the diagonal locking tongue and the dead locking tongue are respectively located in independent first and second lock bodies. When it is not necessary to lock the door panel, first retract the dead locking tongue of the second lock body. When closing the door, just push the door panel, and the diagonal locking tongue of the first lock body will compress the spring and retract, and then extend again under the action of the spring to achieve convenient opening and closing of the door; when it is necessary to lock the door panel, then drive the dead locking tongue of the second lock body to extend to achieve a double protection effect.

[0003] For the handle lock with the above structure, when higher security is required, the opening and closing of the first and second lock bodies must be operated separately to achieve opening and closing of the door, resulting in very inconvenient actual use. Therefore, some domestic handle locks achieve the linkage between the diagonal locking tongue and the dead locking tongue through a complex linkage mechanism, so as to achieve the synchronous extension and retraction of the diagonal locking tongue and the dead locking tongue.

[0004] However, the linkage mechanisms of these handle locks usually have a large number of link mechanisms and elastic components. Both the diagonal locking tongue and the dead locking tongue are non-standard components arranged in the lock body, and the structure is complex. Moreover, there are generally two to three common specifications for the distance between the diagonal locking tongue and the dead locking tongue. When the distance requirements between the diagonal locking tongue and the dead locking tongue are different, the entire structure of the linkage mechanism needs to be changed, and the universality is extremely low, which is not conducive to production, assembly and sales. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a linkage handle lock, which links the diagonal tongue assembly and the dead tongue assembly with a simple structure, is beneficial to simplifying the product structure, and can meet the distance between the two diagonal tongue assemblies and the dead tongue assemblies, expanding the applicable range of the product.

[0006] A linkage handle lock according to an embodiment of the present invention includes: a front lock body, a front handle is rotatably provided on the front lock body; a rear lock body, a rear handle is rotatably provided on the rear lock body; a first connecting rod, one end of which is connected to the rear handle, and the other end is connected to the front handle through a clutch mechanism; a first output shaft, rotatably provided on the front lock body or the rear lock body, and the distance between the axis of the first output shaft and the rotation axis of the rear handle is a first center distance; a second output shaft, rotatably provided on the front lock body or the rear lock body, and the distance between the axis of the second output shaft and the rotation axis of the rear handle is a second center distance, and the second center distance is not equal to the first center distance; a gear set, drivingly connected between the first connecting rod, the first output shaft and the second output shaft to drive the first connecting rod, the first output shaft and the second output shaft to rotate synchronously; a second connecting rod, mounted on the first output shaft or the second output shaft; a bevel tongue assembly and a dead tongue assembly, located between the front lock body and the rear lock body, and one of the bevel tongue assembly and the dead tongue assembly is connected to the first connecting rod, and the other is connected to the second connecting rod.

[0007] A linkage handle lock according to an embodiment of the present invention has at least the following

[0008] Beneficial effects:

[0009] When opening and closing the door of the above-mentioned linkage handle lock, the front handle is rotated. The front handle drives the first output shaft and the second output shaft to rotate synchronously through the gear set. The second connecting rod is selectively connected to the first output shaft or the second output shaft. When the first connecting rod and the second connecting rod rotate, they drive the bevel tongue assembly and the dead tongue assembly to synchronously expand and contract, thereby simplifying the product structure, and at the same time providing two output specifications of the first center distance and the second center distance, expanding the applicable range of the product. In addition, the bevel tongue assembly and the dead tongue assembly are externally arranged between the front lock body and the rear lock body, and are applicable to standardized bevel tongue assemblies and dead tongue assemblies.

[0010] In some embodiments of the present invention, the gear set includes a first gear coaxially arranged with the rear handle, a second gear coaxially arranged with the first output shaft, and a third gear coaxially arranged with the second output shaft. The first gear is directly meshed with the second gear or meshed through a first transmission gear, and the second gear is directly meshed with the third gear or meshed through a second transmission gear.

[0011] In some embodiments of the present invention, the second gear and the third gear are connected through one of the second transmission gears, and the transmission ratio between the third gear and the second gear is 1.

[0012] In some embodiments of the present invention, the geometric centers of the first gear, the second gear and the third gear are arranged in sequence from bottom to top on the same vertical line, the distance between the axis of the first output shaft and the axis of the second output shaft is smaller than the first center distance, and two first transmission gears are provided, and an acceleration gear pair connected between the first gear and the second gear is formed between the two first transmission gears.

[0013] In some embodiments of the present invention, one of the second gear and the first output shaft is provided with a first idle groove, and the other is provided with a first driving part that can move in the first idle groove, and the first driving part can drive the second gear and the first output shaft to rotate together after moving from one end of the first idle groove to the other end of the first idle groove; one of the third gear and the second output shaft is provided with a second idle groove, and the other is provided with a second driving part that can move in the second idle groove, and the second driving part can drive the third gear and the second output shaft to rotate together after moving from one end of the second idle groove to the other end of the second idle groove; when the rear handle is rotated to open or close the door, the rotation angles of the rear handle, the first output shaft and the second output shaft are consistent.

[0014] In some embodiments of the present invention, a first axial hole is provided through the middle portion of the second gear, the first idling groove is provided on the side wall of the second gear around the center of the first axial hole, the first idling groove is connected to the first axial hole, the first output shaft is provided in the first axial hole, the first driving portion is protruded on the side portion of the first output shaft and extends into the first idling groove, the first output shaft is provided with a first plug hole along its axial direction, and the second connecting rod can be detachably plugged into the first plug hole.

[0015] In some embodiments of the present invention, a second axial hole is provided through the middle portion of the third gear, the second idling groove is provided on the side wall of the third gear around the center of the second axial hole, the second idling groove is connected to the second axial hole, the second output shaft is provided in the second axial hole, the second driving portion is protruded on the side portion of the second output shaft and extends into the second idling groove, the second output shaft is provided with a second plug-in hole along its axial direction, and the second connecting rod can be detachably plugged into the second plug-in hole.

[0016] In some embodiments of the present invention, a pivotal connection portion is provided in the middle of the first gear, and the rear handle is detachably provided on the pivotal connection portion. The rear handle has a first installation position for opening the door clockwise and a second installation position for opening the door counterclockwise relative to the rear lock body; when the rear handle is in the first installation position, the first driving portion is located at the first end of the first idle slot to be in a first angular position, and the second driving portion is located at the first end of the second idle slot to be in a first angular orientation; when the rear handle is switched to the second installation position, the first driving portion is switched to the second end of the first idle slot to be in a second angular position, and the second driving portion is switched to the second end of the second idle slot to be in a second angular orientation.

[0017] In some embodiments of the present invention, a first through hole corresponding to the first end of the first idle slot and a second through hole corresponding to the second end of the first idle slot are provided through the rear lock body. A first identifier and a second identifier are respectively provided on the side portions of the first through hole and the second through hole. A third through hole corresponding to the first end of the second idle slot and a fourth through hole corresponding to the second end of the second idle slot are provided through the rear lock body. A third identifier and a fourth identifier are respectively provided on the side portions of the third through hole and the fourth through hole.

[0018] In some embodiments of the present invention, the first transmission gear adjacent to the first gear has the same pitch diameter and module as the first gear, and the first transmission gear, the second gear, the second transmission gear, and the third gear adjacent to the second gear have the same pitch diameter and module.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1 is a schematic structural diagram of an embodiment of the linkage handle lock of the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the rear handle of the rear lock body of the embodiment in the first installation position;

[0023] Figure 3 is Figure 1 a schematic structural diagram of the rear handle of the rear lock body of the embodiment in the second installation position;

[0024] Figure 4 For Figure 1 Structural schematic diagrams of the gear set, first output shaft, second output shaft, first connecting rod, and second connecting rod of the embodiment;

[0025] Figure 5 Schematic diagram of an embodiment of the bevel tongue assembly;

[0026] Figure 6 Schematic diagram of an embodiment of the dead tongue assembly. Detailed implementation manners

[0027] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0028] In the description of the present invention, if the first, second, third, fourth, fifth, etc. are described, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present invention, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0031] Refer to Figures 1 to 4, a linkage handle lock according to an embodiment of the present invention includes: a front lock body 100, a front handle 110 is rotatably provided on the front lock body 100; a rear lock body 200, a rear handle 210 is rotatably provided on the rear lock body 200; a first link 300, one end of which is connected to the rear handle 210, and the other end is connected to the front handle 110 through a clutch mechanism; a first output shaft 220, rotatably disposed in the front lock body 100 or the rear lock body 200, and the distance between the axis of the first output shaft 220 and the axis of rotation of the rear handle 210 is a first center distance; a second output shaft 230, rotatably disposed in the front lock body 100 or the rear lock body 200, and the distance between the axis of the second output shaft 230 and the axis of rotation of the rear handle 210 is a second center distance, and the second center distance is not equal to the first center distance; a gear set, drivingly connected between the first link 300, the first output shaft 220 and the second output shaft 230 to drive the front handle 110 and the rear handle 210 on the first link 300, the first output shaft 220 and the second output shaft 230 to rotate synchronously; a second link 400, mounted on the first output shaft 220 or the second output shaft 230; a deadbolt assembly 500 and a latch assembly 600, located between the front lock body 100 and the rear lock body 200, and one of the deadbolt assembly 500 and the latch assembly 600 is connected to the first link 300, and the other is connected to the second link 400.

[0032] When opening or closing the door, rotate the front handle 110 of the above-mentioned linkage handle lock. The front handle 110 and the rear handle 210 drive the first output shaft 220 and the second output shaft 230 to rotate synchronously through the gear set. The second link 400 selectively connects to the first output shaft 220 or the second output shaft 230. When the first link 300 and the second link 400 rotate, they drive the deadbolt assembly 500 and the latch assembly 600 to move synchronously in a telescopic manner, thus simplifying the product structure and also providing two output specifications of the first center distance and the second center distance, expanding the applicable range of the product. In addition, the deadbolt assembly 500 and the latch assembly 600 are externally disposed between the front lock body 100 and the rear lock body 200, and are applicable to the standardized deadbolt assembly 500 and the latch assembly 600.

[0033] In this embodiment, the gear set is located in the rear lock body 200, and the first output shaft 220 and the second output shaft 230 are both rotatably disposed in the rear lock body 200. When the clutch mechanism connects the first link 300 and the front handle 110, the front handle 110, the rear handle 210, the first output shaft 220 and the second output shaft 230 rotate synchronously. Of course, in other embodiments, the gear set can also be disposed in the front lock body 100. Correspondingly, the first output shaft 220 and the second output shaft 230 are also rotatably disposed in the front lock body 100.

[0034] The clutch mechanism generally includes a clutch pin disposed between the front handle 110 and the first connecting rod 300, and an electric push rod, a mechanical lock core, etc. that drives the clutch pin to combine or separate the front handle 110 and the first connecting rod 300. When an electric push rod is used, the front lock body 100 is provided with a fingerprint module, a password disk, and other identification modules for inputting user information. When the correct input information is identified, the electric push rod can drive the clutch pin to combine the front handle 110 and the first connecting rod 300. The clutch mechanism is a common prior art in the art and will not be further described here.

[0035] See also Figure 1 , Figure 5 and Figure 6 In this embodiment, the first connecting rod 300 is inserted into the inclined tongue assembly 500, and the second connecting rod 400 is inserted into the dead tongue assembly 600. Conventional inclined tongue assemblies 500 and dead tongue assemblies 600 are standardized components. The first connecting rod 300 and the second connecting rod 400 are both square rods. Rotating the square rods about 90° can drive the inclined tongue assembly 500 and the dead tongue assembly 600 to retract synchronously. Figure 5 A schematic diagram of the combination of the first connecting rod 300 and the oblique tongue assembly 500 is given. The first connecting rod 300 is penetrated by the first toggle member 510 . The first toggle member 510 is linked to the first translation member 520 . The first translation member 520 is connected to the oblique lock tongue 530 . Figure 6 A schematic diagram of the combination of the second connecting rod 400 and the deadbolt assembly 600 is given, the second connecting rod 400 is passed through the swing arm member 610, the other end of the swing arm member 610 is rotatably provided with a connecting rod 620, the connecting rod 620 is rotatably connected to the second translation member 630, and the second translation member 630 is connected to the deadbolt 640.

[0036] See also Figures 2 to 4, in some embodiments of the present invention, the gear set includes a first gear 710 coaxially disposed with the rear handle 210, a second gear 720 coaxially disposed with the first output shaft 220, and a third gear 730 coaxially disposed with the second output shaft 230. The first gear 710 meshes directly with the second gear 720 or meshes through a first transmission gear 740. The second gear 720 meshes directly with the third gear 730 or meshes through a second transmission gear 750. It should be noted that when the front handle 110 and the rear handle 210 drive the first link 300 to rotate, the first output shaft 220 and the second output shaft 230 can be driven to rotate synchronously through the above gear set. If there are no requirements for the rotation angles of the rear handle 210, the first output shaft 220, and the second output shaft 230, the first gear 710, the second gear 720, and the third gear 730 can be assembled in a direct meshing manner; when there are corresponding requirements for the rotation angles of the rear handle 210, the first output shaft 220, and the second output shaft 230, it is necessary to adjust the quantity, position, and specifications of the first transmission gear 740 and the second transmission gear 750 to meet the design requirements.

[0037] See Figure 2 and Figure 3 , in some embodiments of the present invention, since the second link 400 is selectively installed on the first output shaft 220 or the second output shaft 230, in order to ensure that the first output shaft 220 and the second output shaft 230 both rotate the same angle in the same clockwise direction, so as to ensure the normal operation of the oblique tongue assembly 500 or the dead tongue assembly 600 connected to the second link 400, the second gear 720 and the third gear 730 are connected through a second transmission gear 750, and the transmission ratio between the third gear 730 and the second gear 720 is 1.

[0038] See Figure 2 and Figure 3, in some embodiments of the present invention, the geometric centers of the first gear 710, the second gear 720, and the third gear 730 are arranged in sequence from bottom to top on the same vertical line. The distance between the axis of the first output shaft 220 and the axis of the second output shaft 230 is less than the first center distance. There are two first transmission gears 740, and an accelerating gear pair connected between the first gear 710 and the second gear 720 is formed between the two first transmission gears 740. It should be noted that in order to make the distances that the inclined tongue assembly 500 and the stationary tongue assembly 600 extend out of the side wall of the door panel similar, the geometric centers of the first gear 710, the second gear 720, and the third gear 730 are arranged in sequence from bottom to top on the same vertical line, that is, to ensure that the rotation axes of the front handle 110 and the rear handle 210, the first output shaft 220, and the second output shaft 230 are all on the same vertical line. Also, since the distance between the axis of the first output shaft 220 and the axis of the second output shaft 230 is less than the first center distance, in practical applications, the difference between different specifications of the distance between the first link 300 and the second link 400 is much smaller than the first center distance. For example, the commonly used first center distance of the handle lock in the United States is 4 inches, and the second center distance is 5.5 inches. It is impossible to adopt a direct meshing assembly method between the first gear 710, the second gear 720, and the third gear 730. In addition, limited by the width dimension of the housing of the rear lock body 200, arranging an accelerating gear pair between the first gear 710 and the second gear 720 is beneficial to simplifying the composition of the gear set.

[0039] See Figure 4, in some embodiments of the present invention, one of the second gear 720 and the first output shaft 220 is provided with a first idle slot 721, and the other is provided with a first driving part 221 that can move within the first idle slot 721. After the first driving part 221 moves from one end of the first idle slot 721 to the other end, it can drive the second gear 720 and the first output shaft 220 to rotate together; one of the third gear 730 and the second output shaft 230 is provided with a second idle slot 731, and the other is provided with a second driving part 231 that can move within the second idle slot 731. After the second driving part 231 moves from one end of the second idle slot 731 to the other end, it can drive the third gear 730 and the second output shaft 230 to rotate together; when the rear handle 210 rotates to open or close the door, the rotation angles of the rear handle 210, the first output shaft 220, and the second output shaft 230 are the same. It should be noted that since an acceleration gear pair is adopted between the first gear 710 and the second gear 720, and the transmission ratio between the second gear 720 and the third gear 730 is 1, when the front handle 110 and the rear handle 210 rotate 90° to open or close the door, the rotation angles of the first output shaft 220 and the second output shaft 230 are both greater than 90°. The cooperation between the first idle slot 721 and the first driving part 221 can make the rotation angle of the first output shaft 220 equal to the rotation angles of the front handle 110 and the rear handle 210, and the cooperation between the second idle slot 731 and the second driving part 231 can make the rotation angle of the second output shaft 230 equal to the rotation angles of the front handle 110 and the rear handle 210.

[0040] See Figure 4 , in some embodiments of the present invention, a first shaft hole 722 is penetrated through the middle of the second gear 720. The first idle slot 721 is arranged around the center of the first shaft hole 722 on the side wall of the second gear 720. The first idle slot 721 communicates with the first shaft hole 722. The first output shaft 220 is penetrated through the first shaft hole 722. The first driving part 221 protrudes and is formed on the side of the first output shaft 220 and extends into the first idle slot 721. The first output shaft 220 is provided with a first insertion hole 222 along its axial direction, and the second connecting rod 400 can be detachably inserted into the first insertion hole 222. It can be understood that when the rear handle 210 drives the first gear 710 to rotate, the second gear 720 is driven to rotate through the acceleration gear pair. In the first half of the rotation of the second gear 720, the first driving part 221 rotates from one end of the first idle slot 721 to the other end. In the second half of the rotation of the second gear 720, the second gear 720 drives the first output shaft 220 to rotate together. The above structure cleverly achieves the effect that the rotation angle of the first output shaft 220 is equal to the rotation angles of the front handle 110 and the rear handle 210. The way that the second connecting rod 400 is detachably inserted into the first insertion hole 222 facilitates the user to select the first center distance for assembly and use.

[0041] See Figure 4 In some embodiments of the present invention, a second shaft hole 732 is provided through the middle of the third gear 730. The second idle slot 731 is arranged on the side wall of the third gear 730 around the center of the second shaft hole 732. The second idle slot 731 communicates with the second shaft hole 732. The second output shaft 230 is inserted through the second shaft hole 732. The second driving part 231 protrudes and is formed on the side of the second output shaft 230 and extends into the second idle slot 731. The second output shaft 230 is provided with a second insertion hole 232 along its axial direction. The second connecting rod 400 can be detachably inserted into the second insertion hole 232. It can be understood that when the second gear 720 drives the third gear 730 to rotate, in the first half of the rotation period of the third gear 730, the second driving part 231 rotates from one end of the second idle slot 731 to the other end. In the second half of the rotation period of the third gear 730, the third gear 730 drives the second output shaft 230 to rotate together. The above structure ingeniously realizes the effect that the rotation angles of the second output shaft 230, the first output shaft 220, the front handle 110, and the rear handle 210 are equal. The way that the second connecting rod 400 is detachably inserted into the second insertion hole 232 facilitates the user to select the second center distance for assembly and use.

[0042] See Figure 2 and Figure 3 In some embodiments of the present invention, a pivoting part 711 is provided in the middle of the first gear 710. The rear handle 210 is detachably arranged on the pivoting part 711. The rear handle 210 has a first installation position for opening the door clockwise and a second installation position for opening the door counterclockwise relative to the rear lock body 200. When the rear handle 210 is in the first installation position, the first driving part 221 is located at the first end of the first idle slot 721 to be in the first angular position, and the second driving part 231 is located at the first end of the second idle slot 731 to be in the first angular orientation. When the rear handle 210 is switched to the second installation position, the first driving part 221 is switched to the second end of the first idle slot 721 to be in the second angular position, and the second driving part 231 is switched to the second end of the second idle slot 731 to be in the second angular orientation. It should be noted that in order to adapt to the usage habits of different people, general handle locks are divided into right-opening handle locks with the front handle 110 for right-handed opening and left-opening handle locks with the front handle 110 for left-handed opening. For general handle locks, only by rotating the angular positions of both the front handle 110 and the rear handle 210 by 180° can the needs of people with different usage habits be met. However, in the linkage handle lock of the present invention, since the rotation speeds of the front handle 110, the first output shaft 220, and the second output shaft 230 are not equal, it is necessary to satisfy that after rotating the angular positions of both the front handle 110 and the rear handle 210 by 180°, the second gear 720 and the third gear 730 can still idle within a certain angular range. It can be understood that, see Figure 2, when the current handle 110 is applicable to opening and closing the door with the right hand, the rear handle 210 is in the above-mentioned first installation position, the first driving part 221 is located at the first angular position, and the second driving part 231 is located at the first angular orientation. During the process of the front handle 110 and the rear handle 210 rotating 90° clockwise together to open the door, the second gear 720 rotates counterclockwise relative to the first output shaft 220. After the first driving part 221 moves from the first end of the first idle slot 721 to the second end, it drives the first output shaft 220 to also rotate 90° counterclockwise. At the same time, the third gear 730 rotates counterclockwise relative to the second output shaft 230. After the second driving part 231 moves from the first end of the second idle slot 731 to the second end, it drives the second output shaft 230 to also rotate 90° counterclockwise, thereby driving the second connecting rod 400 installed on the first output shaft 220 or the second output shaft 230 to rotate 90°. See Figure 3 , when the current handle 110 is applicable to opening and closing the door with the left hand, the rear handle 210 is in the above-mentioned second installation position, the first driving part 221 is located at the second angular position, and the second driving part 231 is located at the second angular orientation. During the process of the front handle 110 and the rear handle 210 rotating 90° counterclockwise together to open the door, the second gear 720 rotates clockwise relative to the first output shaft 220. After the first driving part 221 moves from the second end of the first idle slot 721 to the first end, it drives the first output shaft 220 to also rotate 90° clockwise. At the same time, the third gear 730 rotates clockwise relative to the second output shaft 230. After the second driving part 231 moves from the second end of the second idle slot 731 to the first end, it drives the second output shaft 230 to also rotate 90° clockwise, thereby driving the second connecting rod 400 installed on the first output shaft 220 or the second output shaft 230 to rotate 90°.

[0043] See Figure 2, in some embodiments of the present invention, the rear lock body 200 is provided with a first through hole 810 corresponding to the first end of the first idle slot 721 and a second through hole 820 corresponding to the second end of the first idle slot 721. First identification marks 910 and second identification marks 920 are respectively provided on the side portions of the first through hole 810 and the second through hole 820. The rear lock body 200 is provided with a third through hole 830 corresponding to the first end of the second idle slot 731 and a fourth through hole 840 corresponding to the second end of the second idle slot 731. Third identification marks 930 and fourth identification marks 940 are respectively provided on the side portions of the third through hole 830 and the fourth through hole 840. It can be understood that after the user or the installer selects the front handle 110 for right-handed opening and closing, it is only necessary to rotate the first output shaft 220 until the first driving portion 221 blocks the first through hole 810 and rotate the second output shaft 230 until the second driving portion 231 blocks the third through hole 830. After the user or the installer selects the front handle 110 for left-handed opening and closing, it is only necessary to rotate the first output shaft 220 until the first driving portion 221 blocks the second through hole 820 and rotate the second output shaft 230 until the second driving portion 231 blocks the fourth through hole 840. The first identification marks 910, the second identification marks 920, the third identification marks 930 and the fourth identification marks 940 play a role in prompting installation and adjustment to prevent misinstallation.

[0044] See Figures 2 to 4 , in some embodiments of the present invention, the first transmission gear 740 adjacent to the first gear 710 has the same pitch diameter and module as the first gear 710. The first transmission gear 740, the second gear 720, the second transmission gear 750 and the third gear 730 adjacent to the second gear 720 have the same pitch diameter and module. That is, there are only two specifications of gears for all the gears of the gear set, which is beneficial to reducing the mold opening cost. Preferably, the transmission ratio between the first gear 710 and the second gear 720 is 1 / 2, and both the first idle slot 721 and the second idle slot 731 are arc-shaped grooves with an angle of 90°.

[0045] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0046] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A linkage handle lock, characterized in that, include: A front lock body (100), wherein the front lock body (100) is rotatably provided with a front handle (110); A rear lock body (200), wherein the rear lock body (200) is rotatably provided with a rear handle (210); A first connecting rod (300), one end of which is connected to the rear handle (210), and the other end of which is connected to the front handle (110) via a clutch mechanism; A first output shaft (220) is rotatably disposed on the front lock body (100) or the rear lock body (200), wherein the distance between the axis of the first output shaft (220) and the rotation axis of the rear handle (210) is a first center distance; A second output shaft (230) is rotatably disposed on the front lock body (100) or the rear lock body (200), wherein the distance between the axis of the second output shaft (230) and the rotation axis of the rear handle (210) is a second center distance, and the second center distance is not equal to the first center distance; a gear set, drivingly connected between the first connecting rod (300), the first output shaft (220) and the second output shaft (230), so as to drive the first connecting rod (300), the first output shaft (220) and the second output shaft (230) to rotate synchronously; A second connecting rod (400) mounted on the first output shaft (220) or the second output shaft (230); The inclined bolt assembly (500) and the dead bolt assembly (600) are located between the front lock body (100) and the rear lock body (200); one of the inclined bolt assembly (500) and the dead bolt assembly (600) is connected to the first connecting rod (300), and the other is connected to the second connecting rod (400); The gear set includes a first gear (710) coaxially arranged with the rear handle (210), a second gear (720) coaxially arranged with the first output shaft (220), and a third gear (730) coaxially arranged with the second output shaft (230). The first gear (710) meshes directly with the second gear (720) or meshes through a first transmission gear. The second gear (720) meshes directly with the third gear (730) or meshes through a second transmission gear (750). The second gear (720) and the third gear (730) are connected through one of the second transmission gears (750), and the transmission ratio between the third gear (730) and the second gear (720) is 1. The geometric centers of the first gear (710), the second gear (720), and the third gear (730) are arranged in the same vertical line from bottom to top. The distance between the axis of the first output shaft (220) and the axis of the second output shaft (230) is less than the first center distance. There are two first transmission gears, and an accelerating gear pair is formed between the two first transmission gears and connected between the first gear (710) and the second gear (720). One of the second gear (720) and the first output shaft (220) is provided with a first idle slot (721), and the other is provided with a first driving part (221) that can move in the first idle slot (721). After the first driving part (221) moves from one end of the first idle slot (721) to the other end, it can drive the second gear (720) and the first output shaft (220) to rotate together. One of the third gear (730) and the second output shaft (230) is provided with a second idle slot (731), and the other is provided with a second driving part (231) that can move in the second idle slot (731). After the second driving part (231) moves from one end of the second idle slot (731) to the other end, it can drive the third gear (730) and the second output shaft (230) to rotate together. When the rear handle (210) rotates to open or close the door, the rotation angles of the rear handle (210), the first output shaft (220), and the second output shaft (230) are the same; A pivoting portion (711) is provided at the middle of the first gear (710), and the rear handle (210) is detachably arranged on the pivoting portion (711). The rear handle (210) has a first installation position for clockwise door opening and a second installation position for counterclockwise door opening relative to the rear lock body (200); when the rear handle (210) is in the first installation position, the first driving portion (221) is located at the first end of the first idle groove (721) to be in a first angular position, and the second driving portion (221) is located at the first end of the first idle groove (721) to be in a first angular position. The driving part (231) is located at the first end of the second idle groove (731) to be in a first angular orientation; when the rear handle (210) is switched to the second installation position, the first driving part (221) is switched to the second end of the first idle groove (721) to be in a second angular position, and the second driving part (231) is switched to the second end of the second idle groove (731) to be in a second angular orientation; the rear lock body (200) is provided with a first end of the first idle groove (721) extending therethrough. A first through hole (810) corresponding to the first end of the first idle groove (721) and a second through hole (820) corresponding to the second end of the first idle groove (721), the first through hole (810) and the second through hole (820) are respectively provided with a first mark (910) and a second mark (920) on their sides; a third through hole (830) corresponding to the first end of the second idle groove (731) and a fourth through hole (840) corresponding to the second end of the second idle groove (731) are provided through the rear lock body (200), the third through hole (830) and the fourth through hole (840) are respectively provided with a third mark (930) and a fourth mark (940) on their sides; the first transmission gear adjacent to the first gear (710) has the same pitch circle diameter and module as the first gear (710), and the first transmission gear adjacent to the second gear (720), the second gear (720), the second transmission gear (750) and the third gear (730) have the same pitch circle diameter and module as the first transmission gear adjacent to the second gear (720).

2. A linkage handle lock according to claim 1, characterized in that: A first shaft hole (722) is provided through the middle of the second gear (720); the first idle groove (721) is provided on the side wall of the second gear (720) around the center of the first shaft hole (722); the first idle groove (721) is connected to the first shaft hole (722); the first output shaft (220) is provided in the first shaft hole (722); the first driving portion (221) is protrudingly formed on the side of the first output shaft (220) and extends into the first idle groove (721); the first output shaft (220) is provided with a first plug hole (222) along its axial direction; and the second connecting rod (400) can be detachably plugged into the first plug hole (222).

3. A linkage handle lock according to claim 1, characterized in that: A second shaft hole (732) is disposed through the middle of the third gear (730). The second idle groove (731) is disposed on the side wall of the third gear (730) around the center of the second shaft hole (732). The second idle groove (731) communicates with the second shaft hole (732). The second output shaft (230) is inserted through the second shaft hole (732). The second driving part (231) is formed protruding from the side of the second output shaft (230) and extends into the second idle groove (731). The second output shaft (230) is provided with a second insertion hole (232) along its axial direction. The second connecting rod (400) can be detachably inserted into the second insertion hole (232).

Images