Door lock drive mechanism

Abstract

The present invention provides a door lock driving mechanism, including a paddle and a pusher, wherein the pusher has a first positioning state and a second positioning state. When the pusher is in the first positioning state, the pusher is located within the range of the paddle motion trajectory, and the paddle drives the pusher to move; when the pusher is in the second positioning state, the pusher is out of the range of the paddle motion trajectory. The present invention sets the pusher to the second state so that it is out of the range of the paddle motion trajectory, and at this time the paddle cannot touch the pusher, which has a good protective effect on the pusher.

Description

Technical Field

[0001] The invention belongs to the technical field of locks, and in particular relates to a door lock driving mechanism. Background Art

[0002] The handle part of the existing door lock cannot be rotated when the lock tongue is locked. The reason is that the structural setting of the door lock driving mechanism is unreasonable. The movement path of the handle paddle is restricted by a certain part of the driving mechanism, so the handle cannot be rotated. At this time, if the handle is forcibly rotated, the driving mechanism inside the door lock will be damaged. In serious cases, it will directly lead to the scrapping of the door lock. The door lock cannot be opened normally by rotating the lock cylinder with the key, which brings inconvenience to the user. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a door lock driving mechanism in which the handle is in a neutral state when the lock core is locked.

[0004] The present invention is achieved through the following technical solutions:

[0005] The door lock driving mechanism includes a paddle and a push member, wherein the push member has a first positioning state and a second positioning state. When the push member is in the first positioning state, the push member is within the movement trajectory of the paddle, and the paddle drives the push member to move; when the push member is in the second positioning state, the push member is out of the movement trajectory of the paddle.

[0006] Beneficial effects of the present invention: the present invention sets the pushing member to the second state so that it is out of the movement trajectory of the paddle. At this time, the paddle cannot touch the pushing member, which has a better protective effect on the pushing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the driving mechanism of the present invention;

[0008] Figure 2 A state diagram is used for the present invention;

[0009] Figure 3 It is a structural schematic diagram of the pusher of the present invention;

[0010] Figure 4 It is a structural schematic diagram of a transmission part;

[0011] Figure 5 It is a schematic diagram of the structure of the locking member. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the embodiments.

[0013] Example

[0014] like Figure 1-Figure 5The door lock shown in the figure comprises a bottom plate 1, a panel 2, a cover plate (not shown in the figure), a lock tongue 3 and a door lock driving mechanism, wherein the door lock driving mechanism comprises a handle driving mechanism and a lock core driving mechanism, wherein the handle driving mechanism is a paddle, and the lock core driving mechanism is a pusher 4, the pusher has a pusher pushing portion 44 for pushing the lock tongue, and the pusher 4 has a first positioning state and a second positioning state, the first positioning state is the unlocking state of the lock core driving mechanism in this embodiment, and the second positioning state is the locking state of the lock core driving mechanism in this embodiment, when the pusher 4 is in the first positioning state, the pusher 4 is located within the range of the paddle movement trajectory, and the paddle drives the pusher 4 to move; when the pusher 4 is in the second positioning state, the pusher 4 is out of the range of the paddle movement trajectory. That is, when the lock core driving mechanism is locked, the handle driving mechanism cannot act on the lock tongue 3, so no matter how the handle is rotated, the lock tongue 3 and the lock core driving mechanism will not be damaged, which has a good protective effect on the door lock.

[0015] In order to keep the pusher 4 in a locked or unlocked state, the lock core drive mechanism also includes a locking member 5 that locks the pusher 4 in a first positioning state and a second positioning state. The locking member 5 mainly plays a positioning role. The locking member 5 and the pusher 4 have two locking states. The switching of the two locking states realizes the switching of the first positioning state and the second positioning state of the pusher 4. The two locking states are switched by rotating the lock core. The locking member can fix the position of the pusher and will not cause the pusher to change its position arbitrarily. In this embodiment, the pusher and the base plate are slidably matched, and two mutually parallel guide grooves 45 are provided on the pusher 4, and the guide column runs through the guide groove setting. The guide column mainly plays a supporting role, and also plays a role in limiting the directional sliding of the pusher.

[0016] The structure of the two locking states is preferably provided with two card positions on the pusher 4. In this embodiment, the card positions are two concave grooves 41 provided on one side of the pusher 4. The locking member 5 has a card block 51 extending into one of the card positions of the pusher 4. The rotating lock cylinder drives the card block 51 to switch between the two card positions through the lock cylinder. The locking state structure is designed as a card position of two grooves, which is more convenient to process and is formed integrally with the pusher. In this embodiment, the card block 51 is a structure that is bent toward one side of the pusher 4 on the locking member 5. The card block 51 and the locking member 5 are an integral structure. It is also very convenient to process the card block using a bending molding structure. In order to prevent the pusher from shaking, the width of the card block is as much as possible the same as the groove width of the groove, so that the noise can be reduced when the door moves.

[0017] At the transmission part between the lock core and the pusher 4, a recess 42 is provided on the pusher 4 for the lock core push block to be inserted into. The recess is also formed by stamping, which is convenient for processing. The locking member 5 fits with the pusher 4, and the locking member 5 partially protrudes from the inner bottom surface of the recess 42 in the locked state, that is, the locking member 5 partially extends to the movement trajectory of the lock core pusher block. When the lock core rotates, the lock core pusher block first pushes the locking member 5 in the recess 42 to disengage the blocking block 51 from the blocking position, and then the lock core is rotated, and the lock core pusher block pushes the inner wall of the recess 42, so that the pusher 4 moves to achieve the switching of the locked state of the pusher 4.

[0018] In order to enable the card block 51 of the locking member 5 to be quickly inserted into the card position of the pushing member 4, in this embodiment, an elastic pushing device 6 is provided on the bottom plate 1 to apply a pushing force to the card block 51 toward the card position. In this embodiment, the elastic pushing device 6 is preferably a spring. The elastic pushing device can quickly reset the locking member so that the card block is quickly inserted into the card position and will not fall off. In this embodiment, in order for the locking member 5 to be able to slide in a directional manner, a sliding groove 52 is provided on the locking member 5, and a positioning column 11 is provided between the bottom plate 1 and the cover plate. The positioning column 11 penetrates the sliding groove 52 of the locking member 5, and a guide column 53 for guiding is provided on one side of the locking member 5. The spring is sleeved outside the guide column 53, and the end of the guide column 53 penetrates a support plate 12. The support plate 12 is clamped between the bottom plate 1 and the cover plate. The width of one side end of the guide column 53 is greater than the outer diameter of the spring, forming a limiting portion for the spring to press. One end of the spring acts on the limiting portion of the locking member 5, and the other end acts on the support plate 12. In this embodiment, a second slide groove parallel to the slide groove of the locking member is provided at a position on the locking member corresponding to one of the guide grooves of the pushing member, and the guide column passes through the second slide groove of the locking member and the guide groove of the pushing member respectively.

[0019] In this embodiment, the lock cylinder driving mechanism further includes a transmission member 7 movably connected to the pusher 4, and the transmission member has a transmission member pushing portion 73 for pushing the lock tongue. The transmission member 7 and the pusher 4 are movably matched through a pin or a rivet, and the transmission member 7 moves with the pusher 4. When the pusher 4 is in the first positioning state, the transmission member 7 is located within the range of the movement trajectory of the paddle; when the pusher 4 is in the second positioning state, the transmission member 7 is out of the range of the movement trajectory of the paddle. The active matching of the transmission member and the pusher enables the transmission member to move with the pusher and rotate itself, so that the paddle cannot drive the transmission member to rotate when the lock cylinder is locked, thereby protecting the transmission member and the pusher from being affected by the rotation of the paddle, and when the lock cylinder is unlocked, the paddle can drive the transmission member to rotate to achieve the purpose of unlocking the paddle.

[0020] The transmission member 7 has an extension portion 71, which is an integrated structure with the transmission member 7. When the push member 4 is in the first positioning state, the extension portion 71 of the transmission member 7 is located within the range of the movement trajectory of the paddle; when the push member 4 is in the second positioning state, the extension portion 71 of the transmission member 7 is out of the range of the movement trajectory of the paddle. A reset device 72 is connected between the transmission member 7 and the push member 4. The reset device 72 is a torsion spring, which is sleeved on the pin or rivet connecting the transmission member 7 and the push member 4. One end of the torsion spring overlaps the transmission member 7, and the other end overlaps the push member 4. The push member 4 has a clamping hole 46 for inserting the end of the torsion spring. The end of the torsion spring is bent and inserted into the clamping hole 46. The push member 4 is provided with a stopper 43 for keeping the transmission member 7 in the initial state. The stopper 43 is a protrusion of the push member 4 that is partially bent upward. One side of the transmission member 7 elastically contacts the stopper 43 through the torsion spring. The blocking part and the pushing member are integrally formed, the structure is easy to produce, the cost is low, and it can play the role of positioning the transmission member. A clamping hole for overlapping one end of the torsion spring is provided on the pushing member, and the clamping hole and the pushing member are formed at one time, so that there is no need to set an overlapping part of the torsion spring on the pushing member or the bottom plate, making the product structure simpler and the production cost low.

[0021] The paddle described in this embodiment includes a paddle member 8 and a handle head 9. In this embodiment, the paddle member 8 and the handle head 9 are split structures. The paddle member 8 is sleeved on the handle head 9 and rotates with the handle head 9. A reset torsion spring 10 is provided between the handle head 9 and the base plate 1. A bent pushing portion 81 is provided at the end of the paddle member 8. When the extended portion of the transmission member is within the movement trajectory of the pushing portion 81, the pushing portion 81 pushes the extended portion of the transmission member when the paddle member 8 rotates, and the transmission portion pushes the lock tongue 3 to unlock the door. The paddle pushing portion is designed as a bent structure, which makes the parts easy to process and low in cost. The pushing portion and the paddle are integrated with each other, which has high strength and long service life.

[0022] When the lock core is locked, the lock core rotates counterclockwise, the lock core push plate rotates to drive the locking member to move along the slide groove direction, the block is separated from the groove, the lock core continues to rotate, the lock core push plate presses the upper side wall of the pusher recess, so that the pusher moves along the guide groove direction, so that the pusher push part of the pusher pushes the lock tongue to lock, and at the same time, the pusher drives the transmission member to move toward the lock tongue direction, at this time, the extension of the transmission member is separated from the movement trajectory range of the toggle member, the locking member is reset under the action of the pushing device, and the block of the locking member is stuck in another groove of the pusher. The present invention puts the pusher driven by the lock core in the lock core locked state, and the paddle that cooperates with the handle transmission is in a neutral state, at this time, no matter how the handle is operated, the drive mechanism of the lock core part will not be damaged, and the lock core drive mechanism has a good protective effect.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, simple changes and substitutions by ordinary technicians in the field are within the protection scope of the present invention.

Claims

1. Door lock driving mechanism, characterized in that: The pusher comprises a paddle and a pusher, wherein the pusher has a first positioning state and a second positioning state. When the pusher is in the first positioning state, the pusher is located within the range of the paddle motion trajectory, and the paddle drives the pusher to move; when the pusher is in the second positioning state, the pusher is out of the range of the paddle motion trajectory. The locking member further includes a locking member that locks the push member in a first positioning state and a second positioning state. The locking member and the push member have two locking states. Switching between the two locking states enables switching between the first positioning state and the second positioning state of the push member. The two locking states are switched by rotating the lock cylinder. The pusher is provided with two card positions, and the locking member is provided with a card block extending into one of the card positions of the pusher. The rotating lock core drives the card block to switch between the two card positions through the lock core. The push member is movably connected with a transmission member and a push member pushing portion for pushing the lock tongue. The transmission member moves with the push member. When the push member is in a first positioning state, the transmission member is located within the movement trajectory of the paddle. When the push member is in a second positioning state, the transmission member is out of the movement trajectory of the paddle. The transmission member has an extension portion and a transmission member pushing portion for pushing the lock tongue. When the pushing member is in a first positioning state, the extension portion of the transmission member is located within the movement trajectory of the paddle. When the pushing member is in a second positioning state, the extension portion of the transmission member is out of the movement trajectory of the paddle. The paddle includes a toggle member and a handle head. A bent pushing portion is provided at the end of the toggle member. When the extended portion of the transmission member is within the movement trajectory of the pushing portion, the pushing portion pushes the extended portion of the transmission member when the toggle member rotates, and the transmission member pushes the lock tongue to unlock the door.

2. The door lock driving mechanism according to claim 1, characterized in that: The pusher is provided with a recess for the lock core push block to be inserted into, the locking piece is fitted with the pusher, and the locking piece partially protrudes from the inner bottom surface of the recess in the locked state, the lock core push block pushes the locking piece in the recess to disengage the block from the locking position and then rotates the lock core to realize the switching of the locking state of the pusher.

3. The door lock driving mechanism according to claim 1, characterized in that: The invention also comprises an elastic pushing device for applying a thrust force to the clamping block toward the clamping position.

4. The door lock driving mechanism according to claim 1, characterized in that: A reset device is connected between the transmission member and the pushing member.

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