Double-clutch door lock

Abstract

The utility model discloses a double-clutch door lock, which comprises a front handle assembly, a rear handle assembly, a square rod, a screw rod assembly and a counter lock rod arranged in the square rod, the front handle assembly comprises a front handle and a front decorative plate, and further comprises a lock cylinder, a counter lock piece, a first axis, a first handle head, a first sliding block, a clamping spring and a plurality of first screws which are arranged in the front handle. The first shaft center is arranged in a round hole of the first handle head, a plurality of first shaft center grooves are formed in the first shaft center, a first notch is formed in the first handle head, the first shaft center is rotated to enable the first shaft center grooves to be aligned with the first notch, the first sliding block is arranged in the first notch, and the square rod penetrates into the first shaft center. The counter lock rod penetrates through the interior of the square rod and the counter lock piece and is finally connected with the lock cylinder, the counter lock piece covers the first axis and the first sliding block, a first arc face is arranged on the inner side of the counter lock piece, the lock cylinder, the counter lock rod and the counter lock piece are in linkage, the lock cylinder rotates to drive the counter lock rod to rotate, and the counter lock rod rotates to drive the counter lock piece to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of handle door locks, and particularly relates to a double-clutch door lock. Background Art

[0002] At present, handle door locks account for a large proportion in the entire lock market. There are various styles and different structures of handle door locks. The designs of existing handle door locks are relatively traditional and old, with cumbersome and complex structures. The structural design is not scientific and reasonable enough, and the designs of anti-locking and unlocking are not scientific and reasonable enough. Most existing handle door locks do not have the function of preventing forced opening. After the door lock is locked, the handle cannot be pressed down. If someone uses force to press down the handle, it will damage the door lock and cause the door lock to malfunction, affecting the service life of the door lock. Moreover, the number of components of existing handle door locks is large and the layout design is unreasonable. The production and processing procedures are numerous, the production efficiency is low, and the production cost is high, which is not conducive to stockpiling. In addition, the assembly and installation operations are not simple and convenient enough, and the practicability is average.

[0003] Therefore, how to achieve a double-clutch door lock with a novel and reasonable structural design, equipped with a double-clutch structure to have the function of preventing forced opening, the front handle and the rear handle can be pressed down after anti-locking to avoid damage to the door lock caused by someone pressing down with force, which has a protective effect on the door lock, can ensure the normal operation of the door lock, extend the service life of the door lock, with a small number of components and a reasonable layout design, a concise and compact structure, effectively simplifying the production and processing procedures, improving the production efficiency, and the assembly and installation operations being simple and convenient is a technical problem urgently to be solved in the industry. Summary of the Invention

[0004] The main purpose of the utility model is to provide a double-clutch door lock, aiming to achieve a double-clutch door lock with a novel and reasonable structural design, equipped with a double-clutch structure to have the function of preventing forced opening, the front handle and the rear handle can be pressed down after anti-locking to avoid damage to the door lock caused by someone pressing down with force, which has a protective effect on the door lock, can ensure the normal operation of the door lock, extend the service life of the door lock, with a small number of components and a reasonable layout design, a concise and compact structure, effectively simplifying the production and processing procedures, improving the production efficiency, and the assembly and installation operations being simple and convenient.

[0005] The utility model provides a double-clutch door lock, which comprises a front handle assembly, a rear handle assembly, a square rod and a screw rod assembly connected between the front handle assembly and the rear handle assembly, and an anti-lock rod arranged in the square rod; the front handle assembly comprises a front handle, a front decorative plate covering the front handle, and further comprises a lock core, an anti-lock member, a first shaft center, a first handle head, a first slider, a snap ring and a plurality of first screws arranged in the front handle; the first shaft center is placed in a circular hole of the first handle head, a plurality of first shaft center grooves are arranged on the first shaft center, a first notch corresponding to and adapted to the first shaft center grooves is arranged on the first handle head, the first shaft center is rotated to align the first shaft center grooves with the first notch, the first slider is placed in the first notch, the square rod penetrates into the first shaft center, the anti-lock rod passes through the inside of the square rod and passes through the anti-lock member and finally is connected with the lock core, the anti-lock member covers the first shaft center and the first slider, and a first arc surface is arranged on the inner side of the anti-lock member. Among them, the lock core, the anti-lock rod and the anti-lock member are linked. When the lock core rotates, it drives the anti-lock rod to rotate, and when the anti-lock rod rotates, it drives the anti-lock member to rotate. The lock core is placed in a lock core hole of the front handle and fixed with a snap ring; the anti-lock member, the first shaft center and the first slider form a front clutch assembly that can convert the door lock into a combined state or a separated state; in the combined state, the first slider is placed in the middle of the first shaft center groove and the first notch, and the first arc surface of the anti-lock member blocks the movement of the first slider to keep the first slider in the middle of the first shaft center groove and the first notch, so that the first handle head, the first slider and the first shaft center are combined into an integral linkage structure. At this time, when the front handle is pressed down, the first handle head rotates, and the first handle head drives the first shaft center to rotate synchronously, which is the combined state; in the separated state, when the anti-lock member is rotated, the first arc surface is separated from the first slider. When the first handle head is just rotated at the beginning, it drives the square rod to rotate, which drives the first shaft center to rotate. The first shaft center ejects the first slider to make the first slider move outwards and slide out of the first shaft center groove, so that the first handle head, the first slider and the first shaft center are converted into a separated state, and the first handle head cannot drive the first shaft center to rotate, which is the separated state, and when the front handle is pressed down, it is in an idling state.

[0006] Preferably, the rear handle assembly includes a rear handle, a rear decorative plate covering the rear handle, and further includes an anti-lock knob, a second shaft center, a second handle head, a second slider, and a plurality of second screws disposed inside the rear handle; the second shaft center is placed in the round hole of the second handle head, and a plurality of second shaft center grooves are provided on the second shaft center. Second notches corresponding and adapted to the second shaft center grooves are provided on the second handle head. Rotate the second shaft center to align the second shaft center grooves with the second notches. The second slider is placed in the second notches. A square rod penetrates into the second shaft center, and an anti-lock rod passes through the inside of the square rod and is connected to the anti-lock knob. The anti-lock knob covers the second shaft center and the second slider. A second arc surface is provided on the inner side of the anti-lock knob. Among them, the anti-lock knob and the anti-lock rod are linked. When the anti-lock knob rotates, it drives the anti-lock rod to rotate. The anti-lock knob is installed in the knob hole of the rear handle; the anti-lock knob, the second shaft center, and the second slider form a rear clutch assembly that can convert the door lock into a combined state or a separated state; in the combined state, the second slider is placed in the middle of the second shaft center groove and the second notch, and the second arc surface of the anti-lock knob blocks the movement of the second slider to keep the second slider in the middle of the second shaft center groove and the second notch, so that the second handle head, the second slider, and the second shaft center are combined into an integrated linkage structure. At this time, press down the rear handle to make the second handle head rotate, and the second handle head drives the second shaft center to rotate synchronously, which is the combined state; in the separated state, rotate the anti-lock knob, and the second arc surface is separated from the second slider. When starting to rotate the second handle head, it drives the square rod to rotate, thereby driving the second shaft center to rotate. The second shaft center ejects the second slider to make the second slider move outwards and thus slide out of the second shaft center groove, converting the second handle head, the second slider, and the second shaft center into a separated state. The second handle head cannot drive the second shaft center to rotate, which is the separated state, and pressing down the rear handle is in an idle state.

[0007] Preferably, a plurality of first handle round cavities are provided on the front handle, and a plurality of first guide posts are provided on the first handle head. The first guide posts are aligned with the first handle round cavities so that the first handle head is sleeved into the front handle and fixed with first screws.

[0008] Preferably, a plurality of second handle round cavities are provided on the rear handle, and a plurality of second guide posts are provided on the second handle head. The second guide posts are aligned with the second handle round cavities so that the second handle head is sleeved into the rear handle and fixed with second screws.

[0009] Preferably, the front clutch assembly and the rear clutch assembly form a dual-clutch structure.

[0010] The utility model realizes a double-clutch door lock with a novel and reasonable structural design, having a dual-clutch structure and thus having an anti-violent opening function. After anti-locking, the front handle and the rear handle can be pressed down to prevent someone from pressing down violently and damaging the door lock, which has a protective effect on the door lock, can ensure the normal operation of the door lock, extend the service life of the door lock, has a small number of components and a reasonable layout design, is structurally concise and compact, effectively simplifies the production and processing procedures, improves production efficiency, and is simple and convenient for assembly and installation operations. Brief Description of the Drawings

[0011] Figure 1 FIG. 1 is one of the three-dimensional structural schematic diagrams of an embodiment of a double-clutch door lock of the present utility model;

[0012] Figure 2 FIG. 2 is another three-dimensional structural schematic diagram of an embodiment of a double-clutch door lock of the present utility model;

[0013] Figure 3 FIG. 3 is one of the partial structural exploded diagrams of an embodiment of a double-clutch door lock of the present utility model;

[0014] Figure 4 FIG. 4 is another partial structural exploded diagram of an embodiment of a double-clutch door lock of the present utility model;

[0015] Figure 5 FIG. 5 is yet another partial structural exploded diagram of an embodiment of a double-clutch door lock of the present utility model;

[0016] Figure 6 FIG. 6 is still another partial structural exploded diagram of an embodiment of a double-clutch door lock of the present utility model;

[0017] Figure 7 FIG. 7 is an enlarged sectional view of the front handle assembly in an embodiment of a double-clutch door lock of the present utility model, showing the combined state;

[0018] Figure 8 FIG. 8 is an enlarged sectional view of the front handle assembly in an embodiment of a double-clutch door lock of the present utility model, showing the separated state.

[0019] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Description of the Embodiments

[0020] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] Referring to Figures 1 to 8 , an embodiment of a double-clutch door lock of the present utility model is provided, which includes a front handle assembly, a rear handle assembly, and further includes a square rod 101 and a screw rod assembly 102 connected between the front handle assembly and the rear handle assembly, and an anti-lock rod 103 disposed in the square rod 101.

[0022] The front handle assembly includes a front handle 104, a front decorative plate 105 covering the front handle 104, and further includes a lock core 106, an anti-lock member 107, a first axis 108, a first handle head 109, a first slider 110, a circlip 111, and a plurality of first screws 112 disposed in the front handle 104.

[0023] The first axis 108 is placed inside the round hole of the first handle head 109. A number of first axis grooves 113 are provided on the first axis 108, and a first notch 114 corresponding and adapted to the first axis grooves 113 is provided on the first handle head 109. Rotate the first axis 108 to align the first axis grooves 113 with the first notch 114. The first slider 110 is placed in the first notch 114. The square rod 101 penetrates into the first axis 108. The anti-lock rod 103 passes through the inside of the square rod 101 and passes through the anti-lock part 107 and finally connects to the lock core 106. The anti-lock part 107 covers the first axis 108 and the first slider 110. A first arc surface 115 is provided on the inner side of the anti-lock part 107. Among them, the lock core 106, the anti-lock rod 103, and the anti-lock part 107 are linked. When the lock core 106 rotates, it drives the anti-lock rod 103 to rotate. When the anti-lock rod 103 rotates, it drives the anti-lock part 107 to rotate. The lock core 106 is placed in the lock core hole of the front handle 104 and fixed with a circlip 111; the anti-lock part 107, the first axis 108, and the first slider 110 form a front clutch assembly that can convert the door lock into a combined state or a separated state.

[0024] In the combined state, the first slider 110 is placed in the middle of the first axis groove 113 and the first notch 114. The first arc surface 115 of the anti-lock part 107 blocks the movement of the first slider 110 to keep the first slider 110 in the middle of the first axis groove 113 and the first notch 114, so that the first handle head 109, the first slider 110, and the first axis 108 are combined into an integrated linkage structure. At this time, press down the front handle 104 to make the first handle head 109 rotate, and the first handle head 109 drives the first axis 108 to rotate synchronously, which is the combined state;

[0025] In the separated state, rotate the anti-lock part 107, and the first arc surface 115 is separated from the first slider 110. When starting to rotate the first handle head 109, it drives the square rod 101 to rotate, thereby driving the first axis 108 to rotate. The first axis 108 ejects the first slider 110 to make the first slider 110 move outwards and thus slide out of the first axis groove 113, converting the first handle head 109, the first slider 110, and the first axis 108 into a separated state. The first handle head 109 cannot drive the first axis 108 to rotate, which is the separated state, and pressing down the front handle 104 is in an idle rotation state.

[0026] In the front clutch assembly: the lock core 106, the anti-lock rod 103, and the anti-lock part 107 are linked.

[0027] The first handle head 109 is not linked with the anti-lock part 107, the lock core 106, and the anti-lock rod 103. The first handle head 109 is linked with the front handle 104.

[0028] The first axis 108 is linked with the square rod 101.

[0029] When in the combined state, the first handle head 109 is linked with the first axis 108, that is, the front handle 104 is linked with the square rod 101. When in the separated state, the first handle head 109 is not linked with the first axis 108, that is, the front handle 104 is not linked with the square rod 101, and it is in an idling state.

[0030] The principle of the rear handle assembly is the same as that of the front handle assembly.

[0031] The rear handle assembly includes a rear handle 116, a rear decorative plate 117 covering the rear handle 116, and further includes an anti-lock knob 118, a second axis 119, a second handle head 120, a second slider 121, and several second screws 122 disposed inside the rear handle 116.

[0032] The second axis 119 is placed in the round hole of the second handle head 120. Several second axis grooves 123 are provided on the second axis 119. Second notches 124 corresponding and adapted to the second axis grooves 123 are provided on the second handle head 120. Rotate the second axis 119 to align the second axis grooves 123 with the second notches 124. The second slider 121 is placed in the second notches 124. The square rod 101 penetrates into the second axis 119. The anti-lock rod 103 passes through the inside of the square rod 101 and is connected to the anti-lock knob 118. The anti-lock knob 118 covers the second axis 119 and the second slider 121. A second arc surface 125 is provided on the inner side of the anti-lock knob 118. Among them, the anti-lock knob 118 and the anti-lock rod 103 are linked. When the anti-lock knob 118 rotates, it drives the anti-lock rod 103 to rotate. The anti-lock knob 118 is installed in the knob hole of the rear handle 116; the anti-lock knob 118, the second axis 119, and the second slider 121 form a rear clutch assembly that can convert the door lock into a combined state or a separated state;

[0033] When in the combined state, the second slider 121 is placed in the middle of the second axis groove 123 and the second notch 124. The second arc surface 125 of the anti-lock knob 118 blocks the movement of the second slider 121 to keep the second slider 121 in the middle of the second axis groove 123 and the second notch 124, so that the second handle head 120, the second slider 121, and the second axis 119 are combined into an integral linkage structure. At this time, press down the rear handle 116 to rotate the second handle head 120, and the second handle head 120 drives the second axis 119 to rotate synchronously, which is the combined state;

[0034] In the separated state, turn the anti-lock knob 118. The second arc surface 125 separates from the second slider 121. When starting to turn the second handle head 120, it drives the square rod 101 to rotate, thereby driving the second axis 119 to rotate. The second axis 119 ejects the second slider 121, causing the second slider 121 to move outward and slide out of the second axis groove 123, converting the second handle head 120, the second slider 121, and the second axis 119 into a separated state. The second handle head 120 cannot drive the second axis 119 to rotate, which is the separated state. After pressing down, the rear handle 116 is in an idle rotation state.

[0035] In the rear clutch assembly: The anti-lock knob 118 replaces the lock core 106 and the anti-lock member 107. The anti-lock knob 118 and the anti-lock rod 103 are linked.

[0036] The second handle head 120 is not linked with the anti-lock knob 118 and the anti-lock rod 103, and the second handle head 120 is linked with the rear handle 116.

[0037] The second axis 119 is linked with the square rod 101.

[0038] In the combined state, the second handle head 120 is linked with the second axis 119, that is, the rear handle 116 is linked with the square rod 101. In the separated state, the second handle head 120 is not linked with the second axis 119, that is, the rear handle 116 is not linked with the square rod 101 and is in an idle rotation state.

[0039] Among them, several first handle round cavities are provided on the front handle 104, and several first guide posts 126 are provided on the first handle head 109. The first guide posts 126 are aligned with the first handle round cavities to insert the first handle head 109 into the front handle 104 and fix it with the first screw 112. The assembly and installation operations are simple and convenient.

[0040] Among them, several second handle round cavities are provided on the rear handle 116, and several second guide posts 127 are provided on the second handle head 120. The second guide posts 127 are aligned with the second handle round cavities to insert the second handle head 120 into the rear handle 116 and fix it with the second screw 122. The assembly and installation operations are simple and convenient.

[0041] The front clutch assembly and the rear clutch assembly form a dual-clutch structure. When in the engaged state, the first actuator head 109 is linked with the first axis 108, that is, the front handle 104 is linked with the square rod 101, and the second actuator head 120 is linked with the second axis 119, that is, the rear handle 116 is linked with the square rod 101. That is, the square rod 101 is integrated with the front handle 104 and the rear handle 116. Pressing down the front handle 104 or the rear handle 116 can open the door lock. When in the separated state, outside the door, the first actuator head 109 is not linked with the first axis 108, that is, the front handle 104 is not linked with the square rod 101 and is in an idle rotation state. In this way, when the door lock is locked, although pressing down the front handle 104 cannot open the door lock, it can rotate idly, which can play a role in preventing forced opening, avoid damage to the door lock caused by someone pressing down violently after locking, protect the door lock, ensure the normal operation of the door lock, and can extend the service life of the door lock. Inside the door, the second actuator head 120 is not linked with the second axis 119, that is, the rear handle 116 is not linked with the square rod 101 and is in an idle rotation state. In this way, when the door lock is locked, pressing down the rear handle 116 can rotate idly before the anti-lock knob 118 is turned. This can play a role in preventing forced opening, avoid damage to the door lock caused by someone pressing down violently after locking, protect the door lock, ensure the normal operation of the door lock, and can extend the service life of the door lock. Moreover, the structural design of the present utility model is novel and reasonable, the number of parts is small and the layout design is reasonable, the structure is simple, refined and compact, effectively simplifies the production and processing procedures, improves the production efficiency, and the assembly and installation operations are simple and convenient.

[0042] The present utility model realizes a dual-clutch door lock with a novel and reasonable structural design, provided with a dual-clutch structure so as to have the function of preventing forced opening. After locking, the front handle 104 and the rear handle 116 can be pressed down to avoid damage to the door lock caused by someone pressing down violently, protect the door lock, ensure the normal operation of the door lock, extend the service life of the door lock, with a small number of parts and a reasonable layout design, a simple, refined and compact structure, effectively simplifies the production and processing procedures, improves the production efficiency, and the assembly and installation operations are simple and convenient.

[0043] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the description and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A dual clutch door lock, characterized in that: It includes a front handle assembly, a rear handle assembly, a square rod and a screw assembly connected between the front handle assembly and the rear handle assembly, and a locking rod arranged in the square rod; The front handle assembly includes a front handle, a front decorative plate covering the front handle, and also includes a lock core, a counter-locking member, a first axis, a first handle head, a first slider, a retaining spring, and a plurality of first screws arranged in the front handle; The first axis is placed in the circular hole of the first handle head, a plurality of first axis grooves are provided on the first axis, a first notch corresponding to the first axis groove is provided on the first handle head, the first axis is rotated to align the first axis groove with the first notch, the first slider is placed in the first notch, the square rod penetrates the first axis, the anti-lock rod passes through the inside of the square rod and the anti-locking member and is finally connected with the lock core, the anti-locking member covers the first axis and the first slider, and a first arc surface is provided on the inner side of the anti-locking member, wherein the lock core, the anti-locking rod and the anti-locking member are linked, the rotation of the lock core drives the anti-locking rod to rotate, and the rotation of the anti-locking rod drives the anti-locking member to rotate, the lock core is placed in the lock core hole of the front handle and fixed with a retaining spring; the anti-locking member, the first axis and the first slider constitute a front clutch assembly that can convert the door lock into a combined state or a separated state; In the combined state, the first slider is placed between the first axis groove and the first notch, and the first arc surface of the anti-locking member blocks the movement of the first slider so that the first slider is kept between the first axis groove and the first notch, thereby combining the first handle head, the first slider, and the first axis into an integrated linkage structure. At this time, the front handle is pressed down to rotate the first handle head, and the first handle head drives the first axis to rotate synchronously, which is the combined state; When in the separated state, the anti-locking piece is rotated, and the first arc surface is separated from the first slider. When the first handle head is just started to be rotated, the square rod is driven to rotate, thereby driving the first axis to rotate. The first axis pushes out the first slider, causing the first slider to move outward and slide out of the first axis groove, so that the first handle head, the first slider, and the first axis are converted into the separated state. The first handle head cannot drive the first axis to rotate, which is the separated state, and the front handle is pressed down to be in an idling state.

2. A dual clutch door lock according to claim 1, characterized in that: The rear handle assembly includes a rear handle, a rear decorative plate covering the rear handle, and also includes an anti-locking knob, a second axis, a second handle head, a second slider, and a plurality of second screws arranged in the rear handle; The second axis is placed in the circular hole of the second handle head, a plurality of second axis grooves are arranged on the second axis, a second notch corresponding to the second axis groove is arranged on the second handle head, the second axis is rotated to align the second axis groove with the second notch, the second slider is placed in the second notch, the square rod penetrates the second axis, the anti-lock rod passes through the inside of the square rod and is connected to the anti-lock knob, the anti-lock knob covers the second axis and the second slider, a second arc surface is arranged on the inner side of the anti-lock knob, wherein the anti-lock knob and the anti-lock rod are linked, the rotation of the anti-lock knob drives the anti-lock rod to rotate, and the anti-lock knob is installed in the knob hole of the rear handle; the anti-lock knob, the second axis and the second slider constitute a rear clutch assembly that can convert the door lock into a combined state or a separated state; In the combined state, the second slider is placed between the second axis groove and the second notch, and the second arc surface of the anti-locking knob blocks the movement of the second slider so that the second slider is kept between the second axis groove and the second notch, thereby combining the second handle head, the second slider, and the second axis into an integrated linkage structure. At this time, pressing down the rear handle makes the second handle head rotate, and the second handle head drives the second axis to rotate synchronously, which is the combined state; When in the separated state, turn the anti-lock knob, the second arc surface separates from the second slider, and when the second handle head is just turned, the square rod is driven to rotate, thereby driving the second axis to rotate, and the second axis pushes out the second slider to move outward and slide out of the second axis groove, so that the second handle head, the second slider, and the second axis are converted into the separated state. The second handle head cannot drive the second axis to rotate, which is the separated state, and the handle is in an idle state after being pressed down.

3. A dual clutch door lock according to claim 1, characterized in that: The front handle is provided with a plurality of first handle circular cavities, the first handle head is provided with a plurality of first guide posts, the first guide posts are aligned with the first handle circular cavities so that the first handle head is inserted into the front handle and fixed with first screws.

4. A dual clutch door lock according to claim 2, characterized in that: The rear handle is provided with a plurality of second handle circular cavities, the second handle head is provided with a plurality of second guide posts, the second guide posts are aligned with the second handle circular cavities so that the second handle head is inserted into the rear handle and fixed with second screws.

5. A dual clutch door lock according to claim 2, characterized in that: The front clutch assembly and the rear clutch assembly form a dual-clutch structure.

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