CN209670541U - A motor clutch mechanism that prevents technical opening - Google Patents

Abstract

The utility model relates to an anti-technical opening motor clutch mechanism. The accommodating chamber of the motor clutch includes a push plate that can slide up and down, a motor containing a bearing, and a push rod for emergency opening; wherein the bearing is connected to the spring through the elastic body. The push plate is connected and the push plate slides up and down, and the push plate slides upward, which means the clutch is opened. When the ejector rod is pushed upward by external force, the ejector rod will first control the push plate so that it cannot slide, and the ejector rod only pushes the elastic body to move upward and keep it at a high position; after the ejector rod returns to its original state, the restriction on the push plate will be released ; At this moment, the elastic body can push the push plate to slide upwards, or the bearing restores the elastic body to the initial low position under the action of the electric motor, so that the elastic body will not make the push plate slide upward. Thus, the original automatic opening or closing function of the clutch is realized, and the purpose of preventing illegal technical means from opening the clutch is realized, which has a very high promotional value.

Description

A motor clutch mechanism that prevents technical opening

technical field

The utility model relates to an electronic lockset, in particular to a motor clutch mechanism for preventing technical opening.

Background technique

In the current anti-theft door electronic lock technology, the clutch control handle is often used to implement opening and closing; and considering the possibility of failure of the electronic system, a mechanical lock cylinder is generally required as a backup emergency unlocking method.

Chinese Patent Authorized Announcement No. CN207194625U "A Lock Clutch Module and Lockset" and Chinese Patent Authorized Announcement No. CN207776613U "Boosting Device for Electronic Door Lock Clutch" all adopt a push rod or similar structure in the clutch. When the electronics fails, the push rod in the clutch is pushed by the mechanical lock cylinder to open the clutch.

However, in the above technologies, the mechanical lock cylinder has the problem of insufficient anti-technical unlocking ability, and how to prevent the clutch from being opened after the mechanical lock cylinder is opened by technical means when the electronic state of the lockset is normal has not been solved.

Contents of the invention

In order to overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a motor clutch mechanism that prevents technology from opening to the art, so that it can solve the above-mentioned technical problems that cannot be satisfied in the prior art. Its purpose is to realize through the following scheme.

An anti-technical opening motor clutch mechanism comprising:

A housing with an accommodating cavity; a push plate that can slide up and down in the accommodating cavity; a motor installed in the accommodating cavity, whose bearing is connected with the push plate through a push plate elastic body to drive the The push plate slides relative to the housing; wherein, the motor is positively energized to make the bearing rotate forward to drive the push plate elastic body to move to the open position; the motor is reversely energized to make the bearing reversely rotate, and the push plate elastic body fails to remain in the open position or remains in the closed position;

The ejector rod is located inside or outside the accommodating cavity; when the ejector rod moves upward or swings upward due to external force, the push plate in the closed position is controlled by the structural parts associated with the external force and cannot move, and the ejector rod pushes the push plate The elastic body reaches the open position; when the push rod moves downward or swings downward, the push plate is released from control.

Further, when the push rod moves upward or swings upward, the push rod controls the push plate in the closed position so that it cannot move; when or after the push rod moves downward or swings downward, the push rod releases the clamping of the push plate buckle;

Or the motor clutch mechanism also includes a push plate block or a push plate retaining spring installed in the accommodating cavity; the push plate block or push plate retaining spring is affected by the upward movement or upward swing of the push rod, and Or the push plate block or push plate retaining spring is subjected to external force, and the push plate block or push plate retaining spring moves or twists and buckles the push plate, so that the push plate cannot move upward; Or when swinging downwards or after, the push plate block or the push plate retaining spring releases the buckle to the push plate;

Or when the push rod moves upward or swings upward, the external force acting on the push rod makes the push plate controlled by other structural members and cannot move; when the push rod moves downward or swings downward or after, the structural member Unlock the push plate.

Further, the bearing is connected to the push plate through the push plate elastic body, so as to drive the push plate to slide relative to the housing; it refers to:

A worm or a gear is installed on the bearing, and one end of the push plate elastic body made of spring wire is located in the thread groove on the threaded worm and moves up and down with the rotation of the thread worm, and the other end of the push plate elastic body is connected to the push plate; When one end of the spring wire moves on the threaded worm, the spring wire is elastically deformed to generate thrust on the push plate;

Or a gear or a gear set is installed on the bearing, and the push plate elastic body is composed of a spring and a spur rack or a gear, wherein the spur rack or a gear is in transmission connection with the gear or gear set mounted on the bearing, and is used The spring is elastically deformed to generate pressure or tension on the push plate.

Further, when the push rod moves upward or swings upward due to external force, the push rod buckles the buckle groove on the lower push plate so that the push plate cannot move upward;

Or when the push rod moves upward or swings upward due to external force, the push plate block or the push plate retaining spring buckles the buckle groove on the lower push plate, so that the push plate cannot move upward;

Or when the push rod moves upwards or swings upwards, the external force acting on the push rod locks the snap groove on the lower push plate through other structural parts, so that the push plate cannot move upwards.

Further, the motor clutch also includes an induction switch module, which is used to sense the movement state of the push rod, or the push plate block, or the push plate retainer, or the push rod elastic body, or to sense the movement state of the push rod The movement of an object applying external force, the induction switch module is composed of one or more induction switches with the same or different properties, the induction switch is a light touch switch, or a micro switch, or a magnetic switch, or a photosensitive switch Electronic components used to sense the movement of objects and output corresponding electrical variables; the induction switch module is located inside or outside the casing.

Further, it also includes a push rod spring that deforms when the push rod moves upwards and can reset the push rod.

Further, it also includes a block spring for restoring the block of the push plate.

Further, the housing with the accommodating cavity includes a housing base and a housing cover.

Further, it also includes a front shifting block and a rear shifting block which are located in the casing and can rotate relative to the casing; wherein, the front shifting block contains a clutch pin capable of telescopic movement relative to it and a clutch spring on the clutch pin; initially In this state, the clutch pin protrudes out of the front shifting block under the action of the clutch spring and corresponds to the push plate; when the push plate is in the open position, the clutch pin is pushed back into the front shifting block, and the clutch pin is snapped into the rear shifting block at the same time In the block, the front shifting block and the rear shifting block can rotate coaxially by the clutch pin.

A motor clutch mechanism that prevents technical opening of the utility model, by adding an induction switch in the motor clutch and elastically connecting the motor bearing with the push plate, when the ejector rod is pushed upward by mechanical means, the push plate is controlled and It cannot move upwards; so that the control system can control the motor so that the elastic body cannot be kept in the open position, thereby avoiding illegal opening without authorization; the proposal of the new motor clutch electric control theory realizes the clutch must have The function of automatic opening or closing, and the purpose of preventing illegal mechanical opening of the motor clutch, have extremely high promotion value.

Description of drawings

Fig. 1 is a schematic diagram of the explosive structure of a motor clutch that prevents technical opening of the utility model;

Fig. 2 is a schematic structural view of the push plate in Fig. 1;

Fig. 3 is a schematic diagram of the internal structure of the motor clutch shown in Fig. 1;

Fig. 4 is a schematic diagram of the internal structure of the motor clutch push rod shown in Fig. 1 when it moves upward;

Fig. 5 is a schematic diagram of the internal structure of another anti-technical opening motor clutch of the present invention.

The names of the serial numbers in the figure are: 101, shell base, 102, shell cover, 201, front shift block, 202, front shift block accessories, 203, rear shift block, 204, clutch pin, 205, clutch spring, 301 , micro switch, 302, switch reed, 401, motor, 402, worm, 501, push plate, 502, buckle groove, 601, ejector rod, 701, push plate retaining spring, 702, buckle hook, 703, Push plate block, 801, push plate spring body.

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Accompanying drawing has provided preferred embodiment of the utility model. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

In the following description, "up" and "down", "retract" and "extend", "forward energization" and "reverse energization" are only relative terms, it can be understood that without changing the anti-opening technology Based on the motor clutch control method and the basic principle of the mechanism, "up" can be changed to "down", "inward" can also be changed to "outward", and the "positive power" of the motor coil can also be changed. For "reverse energization", this state and mode are all only relatively speaking, and the essence of the motor clutch control method and the mechanism of this kind of anti-technical opening do not have actual changes.

In the following description, a clutch including a front shift block and a rear shift block commonly used in electronic locks is used. matching; the clutch pin is also equipped with a clutch spring; when the clutch pin is retracted relative to the front shift block, one end stretches into the rear shift block, and the elastic deformation of the clutch spring produces the thrust that makes the clutch pin reset. The front shifting block can drive the rear shifting block to rotate coaxially through the clutch pin extending into the rear shifting block. In this type of clutch, the clutch pin is cleverly used to realize the linkage and disengagement of the front shift block and the rear shift block, and there are many ways to form this type of front shift block and rear shift block. For this, the utility model does not limit .

Embodiment 1: A motor clutch that prevents technical opening.

As shown in Figure 1, it is a schematic diagram of the explosion of the motor clutch; wherein, in the accommodating cavity formed by the housing base and the housing cover, a front shifting block and a rear shifting block that can rotate relative to the housing base are installed, and the front shifting block is installed. Also movably be installed with clutch pin and clutch spring on shifting block; For ease of production, also be installed on the front shifting block and be used for assisting the front shifting block accessory that clutch pin and clutch spring are installed. A push plate is arranged below the front shift block in the housing base, and the push plate is arranged opposite to the clutch pin, and can slide toward the front shift block to push the clutch pin to retract relative to the front shift block and extend into the rear shift block. A motor is also installed on the housing base on one side of the push plate, and a worm screw is installed on the bearing of the motor, and the energization of the motor makes the bearing rotate and the worm screw coaxially rotates. A push plate spring body made of spring wire is installed on the shell base on the other side of the push plate. One pin of the push plate spring body is located at the lower end of the push plate to push the push plate to move upward. The other pin of the push plate spring body The pins are movably overlapped in the thread groove of the worm, and can move up and down when the worm rotates, and can elastically deform the spring body of the push plate to generate an upward thrust to the push plate. A push rod is installed below the push plate spring body in the housing base, and a push plate retaining spring is fixed on the push rod. When the ejector rod moves upwards, the spring of the push plate is elastically deformed and produces an elastic force to reset the ejector rod. The hook on the retainer spring of the push plate engages the snap groove at the lower end of the push plate to prevent the push plate from moving, as shown in Fig. 2 shows the schematic diagram of the push plate, and the buckle groove at the lower end can be seen. A micro switch with a switch reed is also installed at the position corresponding to the push rod in the base of the housing, and the push rod touches the switch reed to trigger the micro switch when it moves upwards.

As shown in Fig. 3, it is a schematic diagram of the internal structure of the motor clutch. For ease of understanding, the housing cover and front shifter accessories are hidden in this diagram. It can be seen that the push pedal is at the low position, the clutch pin protrudes relatively from the front shift block, and the pin of the push pedal spring body lapped on the worm is at the low position, and the motor is in a power-off or reverse-power state at this moment. The push rod is also at the low position due to the restriction of the push plate spring, and is not in contact with the push plate elastic body. The buckle hook on the push plate spring does not snap into the buckle groove of the push plate; the micro switch is not triggered. .

It can be understood that when the motor is energized in the forward direction to make the bearing rotate in the forward direction, the pins on which the push plate spring body overlaps can be driven up by the forward rotation of the worm, so that the push plate spring body produces elastic deformation and exerts pressure on the push plate. The upward thrust makes the push plate rise. After the push plate rises, the clutch pin retracts into the front shift block. The front shift block can drive the rear shift block to rotate coaxially through the clutch pin, and the clutch can be automatically opened; when it needs to be closed , then reversely energize the motor to make the bearing reversely rotate, and the reverse rotation of the worm can make the pin of the push plate spring body drop to a low position, so that the other pin of the push plate spring body connected to the push plate loses the push plate upward The push plate will drop accordingly.

And when the push rod is moved upwards by external force, first the push rod will drive the push plate clip spring connected to it to produce elastic deformation, so that the buckle hook of the push pedal clip spring snaps the snap groove of the push pedal, and the push pedal Will not be able to move; the rise of the push rod will trigger the micro switch by pushing the switch reed. When the ejector rod continues to move upward, it starts to push a pin of the push plate spring body lapped on the worm to move upward. During this process, no matter whether the worm rotates in the opposite direction or not, it cannot drive the pin of the push plate spring body to descend. The push pedal is always unable to move by the push pedal snap ring buckle, and the spring body of the push pedal is limited by the push pedal to deform elastically and generate an upward thrust to the push pedal. And when the push rod pushes the pin of the push plate spring body to rise to the top of the worm, the push rod also rises to the highest position, as shown in Figure 4.

And thereafter, the push rod will start to move downward under the action of the push plate jumper. At this time, if the motor is in the power-off or forward-power state, the pin of the push plate elastic body that is lapped on the worm remains at a high position, and the ejector pin will be out of contact with the pin; During the triggering of the trigger switch, the push plate retaining spring still locks the push plate so that it cannot move.

Afterwards, if the motor is still in the power-off state, the pin of the push plate elastic body lapped on the worm will remain at a high position, and when the push rod continues to descend under the action of the push plate retainer, the push plate retainer will release the push The buckle of the plate and return to the initial state; at this time, the elastic body of the push plate will push the push plate to move upward and push the clutch pin to retract upward, so that the motor clutch is opened. The motor clutch is opened by external force.

And if when the push rod rises to the highest position and starts to move downward, if the motor remains in the reverse energized state at this time, the worm will rotate in the opposite direction, and the pins of the push plate elastic body lapped on it will not be able to maintain When it is in a high position, it will move down with the downward movement of the push rod until it is in the initial low position; during this process, the push plate retaining spring keeps the buckle on the push plate so that it cannot move. When the ejector rod continued to descend to the initial position, the push plate clip spring would release the snap on the push plate, and the ejector rod would also remove the triggering of the induction switch, and the motor clutch would return to the initial state. The motor clutch prevents the action of opening by external force.

In the above-mentioned anti-illegal opening process, the motor needs continuous power supply during the process of lowering the push rod until the elastic body of the push plate is restored to its original state. The power-on time of the motor can be considered as the distance that the push rod moves downward The duration control, that is, if the ejector rod remains in this position, the motor needs to be continuously powered on; and when considering the use of batteries for power supply, the power consumption must be further reduced, and the power-on time of the motor needs to be reduced. Then, when the ejector rod rises to the highest position and starts to move downward, the motor remains in the power-off state; and when the ejector rod continues to descend until the trigger of the micro switch is released, the motor starts to be energized in reverse, and is reversed through the worm. Rotate to make the pin of the push plate elastic body lapped on it move down to a low position, after which the motor can return to the power-off state. It can be considered that this process is not affected by the current and subsequent movement time of the ejector rod, which can greatly shorten the power supply time of the motor, and can minimize power consumption when it is necessary to prevent illegal opening of the clutch through technical means.

It can be understood that in this embodiment, the characteristic of "elastic connection between the motor and the push plate" is fully demonstrated, that is, when the push plate is restricted and unable to move, no matter whether the motor is energized in the forward or reverse direction, the push plate and the push plate The elastic connection between the motors will not cause the motor to fail to rotate and burn out, and at the same time, the push rod will not cause damage to the motor when the push rod pushes the elastic body of the push plate to move. And this feature can also be expressed in other ways, such as through the transmission connection between the gear on the motor bearing and the push plate elastic body composed of elastic body and gear or spur rack, the bearing drives the gear or spur rack of the push plate elastic body to rotate Or move in a straight line, and cause elastic deformation of the elastic body to exert force on the push plate. In this type of method, no matter how the motor rotates, only the gear or the spur rack of the push plate elastic body will move in a limited manner, without restricting the motor bearing. Moreover, the upward movement of the ejector rod will still cause the gear or spur rack of the push pedal elastic body to move, and will not cause damage to the motor bearing; and after the gear or spur rack of the push pedal elastic body moves, it will When the bearing is not rotating, this state can also be maintained by the transmission connection with the bearing. There are many schemes for this type of "elastic connection between the motor and the push plate", and its core is "the elastic connection between the motor and the push plate through the elastic body of the push plate", "the push rod pushes the elastic body of the push plate to move to the open position." And can maintain "; To this, all should regard as protection scope of the present utility model.

It can be understood that, in this embodiment, the function of controlling the push pedal is accomplished by the push pedal retaining spring. The push plate clip spring actually realizes the function of “controlling the push plate when the push rod moves upward, and releases the control of the push plate before the push rod resets”, and also realizes “applying a force to the upward moving push rod”. It can be understood that the function of the push plate retaining spring can be decomposed into multiple structural parts, such as by adding a push rod spring between the push rod and the housing to replace the "upward movement of the push rod". The rod exerts a downward reset force" function, that is, when the ejector rod moves upwards, the ejector rod spring elastically deforms and exerts a downward reset force on the ejector rod; and the push plate block can also make the push plate The block spring for the block reset is replaced to realize the control function of the push plate, as shown in Fig. 5 . However, when the push rod moves upward and the push plate is restricted, the push plate can also be directly controlled by the external force exerted on the push rod, or the push rod can directly control the push plate so that it cannot move; It should be regarded as the protection scope of the present utility model.

It can be understood that in this embodiment, compared with the traditional clutch, the control function of the push plate is increased, that is, when the push rod moves upward, the push plate is controlled so that it cannot move, and the push rod does not move at the same time. It does not directly cause the push plate to move upwards, but only changes the state by driving the "elastic connector between the motor and the push plate", thereby avoiding the problem of illegal opening caused by directly driving the push plate to open through the push rod. The upward movement of the push rod is caused by an external force, and the movement of the push plate elastic body can be directly caused by this external force, or it can be completed by the push plate retaining spring and the push plate block associated with the movement of the push rod; All of these should be regarded as the protection scope of the present utility model.

It can be understood that, in this embodiment, the control system controls whether the motor remains powered off, or makes the motor forward energize, or makes the motor reverse energize; and the control system can be controlled by the micro The electrical state of the induction switch composed of a dynamic switch can be effectively judged; the electrical state of the induction switch is actually a monitoring of the position and direction of movement of the ejector rod, and an induction switch module composed of multiple induction switches can also be used to monitor the The ejector rod or the state related to the upward movement of the ejector rod are monitored, such as the push plate retaining spring, the push plate block, or the parts that push the ejector rod to move, or even the push plate elastic body, etc.; and the induction switch or the induction switch module The electrical status of the output can be an electrical on-off signal, or a status signal such as voltage or current; the inductive switch or inductive switch module can be located inside or outside the housing; Protection scope of utility model.

Those of ordinary skill in the art can realize that the ultimate goal of this utility model is to make the push plate restricted and unable to move through the mechanical structure during the process of the motor clutch being triggered by an external force, and to achieve this by combining the induction switch and the motor. The control of the motor clutch can effectively realize the purpose of preventing illegal technology unlocking. Therefore, the motor clutch control method and the mechanism for preventing technical opening with the above-mentioned characteristics should all be regarded as the protection scope of the present utility model.

However, the above descriptions are only preferred feasible embodiments of the present utility model, and do not limit the protection scope of the present utility model, so all equivalent structural changes made by using the description and accompanying drawings of the utility model are included in Within the protection scope of the present utility model.

Claims (9)

1. a kind of electric motor clutch mechanism that anti-technology is opened characterized by comprising

Shell with accommodating cavity；

Push plate can slide up and down to and be set in the accommodating cavity；

The motor being installed in accommodating cavity, bearing are connect with the push plate by push plate elastomer, to drive the push plate phase The shell is slided；Wherein, the motor forward direction energization rotates forward bearing to drive push plate elastomer to move to Open position；Motor, which is reversely powered, rotates backward bearing, and push plate elastomer cannot keep open position or still maintain and is in Closed position；

Mandril is located in or beyond accommodating cavity；When mandril is moved upwards or is swung up by external force, it is located at closed position Push plate can not be moved by structural member associated with external force control, mandril pushes push plate elastomer to open position； Mandril moves downward or when to lower swing, and push plate is released from control.

2. the electric motor clutch mechanism that anti-technology according to claim 1 is opened, which is characterized in that described when mandril is by outer When power acts on and moves upwards or be swung up, the push plate positioned at closed position is by structural member control associated with the external force System can not move, and refer to；

When mandril moves upwards or is swung up, mandril, which controls the push plate positioned at closed position, move it can not；It is pushing up Bar move downward when to lower swing or after, mandril releases the buckle to push plate；

Or the electric motor clutch mechanism further includes the push plate fixture block or push plate circlip being installed in accommodating cavity；The push plate card The effect that block or push plate circlip are moved upwards or are swung up by the mandril, also or the push plate fixture block or push plate circlip by External force, push plate fixture block or the movement of push plate circlip twist and withhold push plate, to make push plate that can not move upwards；It is pushing up Bar move downward when to lower swing or after, push plate fixture block or push plate circlip release the buckle to push plate；

Also either when mandril moves upwards or is swung up, the external force acted on mandril makes push plate by other structures part It is controlled and can not be moved；Moved downward in mandril or when to lower swing or after, which releases the buckle to push plate.

3. the electric motor clutch mechanism that anti-technology according to claim 2 is opened, which is characterized in that the bearing with it is described Push plate is connected by push plate elastomer, to drive the push plate to slide relative to the shell；It refers to:

Worm screw or gear are installed, the one end for the push plate elastomer being made of spring wire is located on worm screw or gear on the bearing Thread groove in and move up and down with the rotation of worm screw or gear, the other end of push plate elastomer connects push plate；Spring wire One end makes spring wire that elastic deformation occur and generate thrust to push plate when moving on worm screw or gear；

Or gear or gear set are installed on the bearing, the push plate elastomer collectively formed by spring and spur rack or gear, Wherein spur rack or gear are sequentially connected with the gear or gear set being installed on the bearing, and to make spring generate elasticity Deformation and pressure or pulling force are generated to push plate.

4. the electric motor clutch mechanism that anti-technology according to claim 3 is opened, which is characterized in that have card in the push plate Catching groove；It is described when mandril is moved upwards or is swung up by external force, positioned at closed position push plate by with the external force Acting on associated structural member control can not move；It refers to:

It is described when mandril is moved upwards or is swung up by external force, mandril is withheld in the push plate of closed position Buckle slot, move upwards push plate can not；

Or when mandril is moved upwards or is swung up by external force, the push plate fixture block or push plate circlip withhold position Buckle slot in the push plate of closed position move upwards push plate can not；

Also or when mandril moves upwards or is swung up, the external force acted on mandril withholds position by other structures part Buckle slot in the push plate of closed position move upwards push plate can not.

5. the electric motor clutch mechanism that anti-technology according to claim 3 is opened, which is characterized in that further include inductive switch Mould group, for incuding the motion state of mandril or push plate fixture block or push plate circlip or push plate elastomer, also either for feeling The movement of the object of external force should be applied to mandril, the inductive switch mould group is the sense identical or different by one or more properties Inductive switch is constituted, which is touch-switch or microswitch or magnet-sensitive switch, also or photosensitive switch etc. is for incuding Object of which movement and energy output phase answer the electronic component of electric variable；The inductive switch mould group is located in shell or outside shell.

6. the electric motor clutch mechanism that anti-technology according to claim 2 is opened, which is characterized in that further include mandril to The push rod spring that deformation occurs when upper movement and mandril can be made to reset.

7. the electric motor clutch mechanism that anti-technology according to claim 3 is opened, which is characterized in that further include for making to push away The fixture block spring that board block is resetted.

8. the electric motor clutch mechanism that anti-technology according to claim 2 is opened, which is characterized in that described that there is accommodating cavity Shell, including housing base and case lid.

9. the electric motor clutch mechanism that anti-technology according to claim 2 is opened, which is characterized in that further include being located at shell Preceding shifting block, rear shifting block interior and be able to rotate relative to the shell；Wherein, in preceding shifting block containing can its opposite stretching motion from Dowel pin and the brake spring on on-of pin；Under original state, on-of pin by brake spring act on and relative extension in preceding group Outside block, and it is corresponding with push plate；On-of pin is pushed to retract in preceding shifting block when push plate is in the open position, on-of pin sticks into simultaneously Afterwards in shifting block, preceding shifting block can be rotated coaxially with rear shifting block by on-of pin at this time.