A lever structure of a lock

Abstract

This utility model relates to the field of lock technology, and in particular to a handle structure for a lock, comprising: a first handle and a second handle; the first handle and the second handle are connected by a square tube transmission; wherein, the first handle includes an inner lock box and a first handle rotatably connected therein, the end of the first handle passing through the inner lock box is stopped and limited by a free-spinning baffle, and a lock cylinder is installed inside the first handle. In this utility model, by adopting the design of free-spinning and coupling components, the first handle is in a free-spinning state when the lock is locked, losing the function of opening the door, which can reduce the degree of intentional damage. At the same time, when the lock is locked, the second handle can open the door at any time without unlocking, allowing for timely escape in case of emergency. When the lock is locked, it can effectively protect the internal structure of the product and strengthen the torsional resistance of the front handle.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a handle structure for a lock. Background Technology

[0002] Locks are an indispensable security device in daily life and are widely used in various access control systems. Traditional locks typically include components such as a lock cylinder and a handle, and users open and close the lock by turning the handle.

[0003] Currently, most locks on the market are controlled by a key or an internal knob to open and close the lock cylinder. When the door is locked, the external handle usually cannot turn freely. Applying force to the handle in this state can easily cause it to be pried open or damaged. In addition, some locks have complicated internal unlocking operations after the door is locked, which affects the user experience and makes it difficult to escape quickly, especially in emergencies.

[0004] Therefore, in order to further optimize the adaptability of existing locks, we propose a handle structure for locks. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of existing technologies, such as the inability of the external handle to rotate freely when the door is locked, and to propose a handle structure for locks.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a handle structure for a lock, including:

[0008] First and second hand-holding;

[0009] The first handle and the second handle are connected by a square tube transmission.

[0010] The first handle includes an inner lock box and a first handle rotatably connected therein. The end of the first handle that passes through the inner lock box is stopped and limited by a free-spinning baffle. A lock cylinder is installed inside the first handle. A free-spinning and coupling component is provided between the first handle, the lock cylinder and the square tube.

[0011] Furthermore, the idling and coupling assembly includes a limiting component, a clutch component, and a safety component disposed inside the first handle.

[0012] Two slides are provided on the outer periphery of the first handle. The outer sides of the limiting member and the safety member are formed with guide protrusions that are adapted to the slides. A compression spring is installed between the safety member and the idle baffle.

[0013] Furthermore, a safety bar is movably inserted into the core of the lock cylinder, and the safety bar passes through the limiting member, the clutch member and the safety member in sequence;

[0014] The safety bar passes through the square tube and extends into the second handle, wherein the safety bar, the square tube, and the clutch are circumferentially locked and rotatably connected to the limiting member and the safety member.

[0015] Furthermore, the square tube has a rotating groove and a snap-fit ​​position inside, and the safety rod rotates a threshold angle in the rotating groove and then abuts against the snap-fit ​​position.

[0016] Furthermore, the clutch has a coupling groove on its end face, and the safety component has a coupling block formed on its end face. When the clutch rotates, the coupling block is driven to move outward through the coupling groove.

[0017] Furthermore, the end face of the idling baffle has two positioning holes, and the first handle is inserted into the two positioning holes at both sides of the two slides.

[0018] A retaining spring is nested on the outer side of the tail end of the first handle, and a first torsion spring is provided between the free-spinning baffle and the inner lock box.

[0019] Furthermore, the inner hole of the inner lock box has a constricted opening to allow free rotation of the safety element.

[0020] Furthermore, the second handle includes an outer lock box, in which a second handle is rotatably connected;

[0021] A second torsion spring is provided between the second handle and the outer lock box.

[0022] Furthermore, a knob is rotatably connected inside the second handle, and one end of the safety bar passes through the second handle and is connected and fixed to the knob.

[0023] Furthermore, a screw is threaded onto the end face of the inner lock box, and one end of the screw is inserted into the outer lock box and locked in place by a fastener.

[0024] The handle structure of this utility model has the following advantages: By adopting the design of free-spinning and coupling components, the first handle can be in a free-spinning state when the lock is locked, losing its function of opening the door and reducing the degree of intentional damage. At the same time, when the lock is locked, the second handle can be opened at any time without unlocking, allowing for timely escape in case of emergency. When the lock is locked, it can effectively protect the internal structure of the product and strengthen the torsional resistance of the front handle. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0028] Figure 4 This is a schematic diagram of the idling and coupling component structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the coupling groove structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the idle baffle structure of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figures 1-6 As one embodiment of this utility model, a handle structure for a lock is disclosed. Specifically, the handle structure includes a first handle 1 and a second handle 2. The first handle 1 and the second handle 2 are respectively installed on both sides of the door. Of course, a lock box assembly should also be installed in the door. The first handle 1 and the second handle 2 are connected by a square tube 3. The square tube 3 passes through the lock box to control the locking and closing movement in the lock box. This method is a conventional method for those skilled in the art and will not be described in detail here.

[0033] The first handle 1 includes an inner lock box 11 and a first handle 12 rotatably connected therein. The end of the first handle 12 passing through the inner lock box 11 is stopped and limited by a free-spinning baffle 13. A lock cylinder 14 is installed inside the first handle 12. A free-spinning and coupling component 15 is provided between the first handle 12, the lock cylinder 14 and the square tube 3.

[0034] In some embodiments, the idling and coupling assembly 15 of the present invention includes a limiting member 151, a clutch member 152 and a safety member 153 disposed inside the first handle 12;

[0035] Two slides 121 are formed on the outer periphery of the first handle 12. The outer sides of the limiting member 151 and the safety member 153 are both formed with guide protrusions 154 that are adapted to the slides 121. A compression spring 155 is installed between the safety member 153 and the idle baffle 13. Specifically, in this embodiment, the limiting member 151 is located on the side close to the lock cylinder 14, the safety member 153 is located on the side close to the idle baffle 13, and the clutch member 152 is located between the limiting member 151 and the safety member 153.

[0036] Based on the above embodiments, in this embodiment, a safety rod 16 is movably inserted into the core of the lock cylinder 14. That is, in this embodiment, the lock cylinder 14 and the safety rod 16 are circumferentially locked. When the key is inserted into the lock cylinder 14, the rotation of the core is controlled to drive the rotation of the safety rod 16. The safety rod 16 passes through the limiting member 151, the clutch member 152 and the safety member 153 in sequence.

[0037] The safety bar 16 passes through the square tube 3 and extends into the second handle 2, wherein the safety bar 16, the square tube 3, and the clutch 152 are circumferentially locked and rotatably connected to the limiting member 151 and the safety member 153.

[0038] It should be noted that the square tube 3 in this embodiment has a rotating groove 31 and a snap-fit ​​position 32 inside. The safety rod 16 rotates a threshold angle in the rotating groove 31 and then abuts against the snap-fit ​​position 32.

[0039] Specifically, in this embodiment, the safety rod 16, the square tube 3, and the clutch 152 are connected by a plug-in method. The safety rod 16 and the clutch 152 should maintain circumferential locking. Since the square tube 3 has a rotating groove 31 inside, the safety rod 16 will abut against the locking position 32 after rotating a certain angle in the rotating groove 31. At this time, the safety rod 16 and the square tube 3 will maintain circumferential locking. The purpose of this design is to prevent the square tube 3 from rotating when the lock cylinder 14 is open, so as to ensure the stable locking of the square tube 3 and the safety member 153.

[0040] When the bumper 16 rotates, it will drive the clutch 152 to rotate. The clutch 152 controls the movement of the safety element 153, so that the safety element 153 moves to the outside of the square tube 3 and couples with the square tube 3.

[0041] Specifically, in this embodiment, the clutch 152 has a coupling groove 156 on its end face, and the safety component 153 has a coupling block 157 formed on its end face. When the clutch 152 rotates, the coupling block 157 is driven to move outward through the coupling groove 156.

[0042] Specifically, in this embodiment, the coupling groove 156 is configured as a V-shaped groove with chamfers, and the coupling block 157 can be configured as a V-shaped protrusion with chamfers that is adapted to the coupling groove 156.

[0043] When the lock cylinder 14 drives the safety bar 16 to rotate, the safety bar 16 will drive the clutch 152 to rotate. At this time, the coupling groove 156 on the clutch 152 will drive the coupling block 157 to move outward. Since the safety bar 153 slides in the slide rail 121 of the first handle 12 through the guide protrusion 154, the entire safety bar 153 can only move in a straight line and cannot rotate. Therefore, when the safety bar 153 is driven outward by the clutch 152, the safety bar 153 moves outward and is locked on the outside of the square tube 3. At this time, the entire first handle 12 is connected to the square tube 3 through the safety bar 153. The first handle 12 can be rotated, and the first handle 12 can drive the entire square tube 3 to rotate through the safety bar 153 to achieve the unlocking control of the lock box.

[0044] It should be noted that the inner hole of the safety component 153 in this embodiment is set as a rectangular hole that is compatible with the square tube 3;

[0045] Conversely, when the lock cylinder 14 is not opened, the safety element 153 and the clutch element 152 are tightly engaged under the push of the compression spring 155. At this time, the safety element 153 disengages from the square tube 3. Since there is no interference between the safety element 153 and the square tube 3, when the first handle 12 is turned, the first handle 12 will spin freely.

[0046] Of course, the free rotation of the first handle 12 is also limited by an angle. When the first handle 12 is free rotating, the safety component 153 will move relative to the clutch component 152. Since the safety component 153 rotates in the free rotation state, the inner hole of the safety component 153 and the square tube 3 will be misaligned until the safety component 153 touches the square tube 3 and then it cannot move further.

[0047] Preferably, the end face of the idle baffle 13 in this embodiment has two positioning holes 131, and the first handle 12 is inserted into the two positioning holes 131 on both sides of the two slide rails 121.

[0048] The first handle 12 is further fitted with a retaining spring 17 on the outer side of its tail end, and a first torsion spring 18 is provided between the idle baffle 13 and the inner lock box 11. The first torsion spring 18 is used to enhance the reset capability of the first handle 12.

[0049] Of course, in order to ensure the stable rotation of the safety element 153 in the initial state, this embodiment has a constricted opening 19 in the inner hole of the inner lock box 11 to avoid the free rotation of the safety element 153.

[0050] In some embodiments, the second handle 2 includes an outer lock box 21, in which a second handle 22 is rotatably connected. Of course, in this embodiment, the second handle 22 can also adopt the same fixing method as the first handle 12, using a free-spinning baffle 13 and a retaining spring 17. For details, please refer to the above description, which will not be elaborated here.

[0051] A second torsion spring 23 is provided between the second handle 22 and the outer lock box 21.

[0052] Specifically, in this embodiment, the second handle 22 is rotatably connected to a knob 24. One end of the safety bar 16 passes through the second handle 22 and is connected and fixed to the knob 24. Since the knob 24 in this embodiment is directly fixed to the safety bar 16, the first handle 1 can be set as the front handle and the second handle 2 as the back handle. In this way, the safety bar 16 can be rotated directly from inside the door by rotating the knob 24 to achieve the purpose of unlocking.

[0053] Based on the above embodiments, in this embodiment, a screw 25 is threadedly connected to the end face of the inner lock box 11. One end of the screw 25 is inserted into the outer lock box 21 and locked by a fastener. Preferably, the fastener in this embodiment is a bolt.

[0054] In summary, by adopting the design of the free-spinning and coupling component 15 in this utility model, the first handle 12 can be in a free-spinning state when the lock is locked, thus losing the function of opening the door and reducing the degree of intentional damage. At the same time, when the lock is locked, the second handle 2 can be opened at any time without unlocking, allowing for timely escape in case of emergency. When the lock is locked, it can effectively protect the internal structure of the product and strengthen the torsional resistance of the front handle.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A handle structure for a lock, characterized in that, include: First hand holding (1) and second hand holding (2); The first handle (1) and the second handle (2) are connected by a square tube (3); The first handle (1) includes an inner lock box (11) and a first handle (12) rotatably connected therein. The end of the first handle (12) passing through the inner lock box (11) is stopped and limited by a free-spinning baffle (13). A lock cylinder (14) is installed inside the first handle (12). A free-spinning and coupling assembly (15) is provided between the first handle (12), the lock cylinder (14), and the square tube (3).

2. The handle structure of a lock according to claim 1, characterized in that: The idling and coupling assembly (15) includes a limiting member (151), a clutch member (152), and a safety member (153) disposed inside the first handle (12); Two slides (121) are provided on the outer periphery of the first handle (12). The outer sides of the limiting member (151) and the safety member (153) are formed with guide protrusions (154) that are adapted to the slides (121). A compression spring (155) is installed between the safety member (153) and the idle baffle (13).

3. The handle structure of a lock according to claim 2, characterized in that: A safety bar (16) is movably inserted into the core of the lock cylinder (14), and the safety bar (16) passes through the limiting member (151), the clutch member (152) and the safety member (153) in sequence; The safety bar (16) passes through the square tube (3) and extends into the second handle (2), wherein the safety bar (16), the square tube (3) and the clutch (152) are circumferentially locked and rotatably connected to the limiting member (151) and the safety member (153).

4. The handle structure of a lock according to claim 3, characterized in that: The square tube (3) has a rotating groove (31) and a snap-fit ​​position (32) inside. The safety rod (16) rotates a threshold angle in the rotating groove (31) and then abuts against the snap-fit ​​position (32).

5. The handle structure of a lock according to claim 2, characterized in that: The clutch (152) has a coupling groove (156) on its end face, and the safety component (153) has a coupling block (157) formed on its end face. When the clutch (152) rotates, the coupling block (157) is driven to move outward through the coupling groove (156).

6. The handle structure of a lock according to claim 2, characterized in that: The end face of the idle baffle (13) has two positioning holes (131), and the first handle (12) is inserted into the two positioning holes (131) on both sides of the two slides (121). The outer side of the tail end of the first handle (12) is also nested with a retaining ring (17), and a first torsion spring (18) is provided between the idle baffle (13) and the inner lock box (11).

7. The handle structure of a lock according to any one of claims 2-6, characterized in that: The inner hole of the inner lock box (11) has a free-spinning constriction (19) to avoid the safety element (153).

8. The handle structure of a lock according to claim 3, characterized in that: The second handle (2) includes an outer lock box (21), in which a second handle (22) is rotatably connected; A second torsion spring (23) is provided between the second handle (22) and the outer lock box (21).

9. The handle structure of a lock according to claim 8, characterized in that: The second handle (22) has a knob (24) rotatably connected inside. One end of the safety bar (16) passes through the second handle (22) and is connected and fixed to the knob (24).

10. The handle structure of a lock according to claim 8, characterized in that: The inner lock box (11) is threaded with a screw (25) on its end face. One end of the screw (25) is inserted into the outer lock box (21) and locked by fasteners.

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