CN112610078B

CN112610078B - Machine cover lock

Info

Publication number: CN112610078B
Application number: CN202011380152.0A
Authority: CN
Inventors: 郭寅
Original assignee: Zhejiang Zero Run Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-11-26
Anticipated expiration: 2040-11-30
Also published as: CN112610078A

Abstract

The invention discloses a machine cover lock, which comprises a lock catch, a lock tongue, a safety baffle, a driving motor and a remote control key, wherein the lock tongue and the safety baffle are arranged on a fixed plate; then the driving motor drives the lock tongue to switch from the locking position to the releasing position, and the lock catch and the lock tongue are disengaged; when the front cover needs to be closed, the front cover is pressed downwards, the lock catch enters the V-shaped opening and is supported on the elastic pad, then the driving motor rotates reversely through the remote control key, and the lock tongue resets from the release position to the locking position; the safety baffle is reset to a locking state from an unlocking state. The invention can avoid the vibration and abnormal sound of the front cover in the running process of the vehicle and realize the automatic opening and closing of the cover lock, thereby being convenient for use.

Description

Machine cover lock

Technical Field

The invention belongs to the technical field of electric automobile manufacturing, and particularly relates to a cover lock.

Background

The existing automobile front cover generally comprises a lock tongue and a lock catch which are arranged between the front cover and an automobile body, and two sets of control mechanisms for unlocking the lock tongue and the lock catch are arranged, wherein one set of control mechanism is arranged in a cab, and the other set of control mechanism is arranged in the front cabin. When opening the bonnet lock, need first manually open the attacker in the driver's cabin, then walk preceding cover before the manual two keep off latch hooks of stirring to open preceding cover, and then ensure the safety of preceding cover, avoid leading to opening suddenly of preceding cover because of the maloperation of motorist in the driver's cabin. Although the safety performance can be improved by the machine cover lock structure and the corresponding unlocking method, the machine cover lock structure has the following defects: first, in order to ensure reliable locking of the latch bolt, a certain fit clearance is generally provided between the latch bolt and the buckle, and thus, the front cover may slightly move up and down. When the front cover is closed and the vehicle runs, the front cover can generate certain vibration and abnormal sound due to the vibration of the vehicle. Secondly, the action steps of the unlocking are multiple, the unlocking is troublesome, and particularly, when an unlocking person is not in the cab, the unlocking person must enter the cab to open the buckle, and then the unlocking person can move to the front cover to open the secondary locking hook.

Disclosure of Invention

The invention aims to provide a cover lock, which can effectively avoid slight vibration and abnormal sound of a front cover in the driving process of a vehicle, can realize automatic opening and closing of the cover lock on the premise of ensuring the safe opening of the cover lock, is convenient to use, has a simple structure, and is beneficial to processing, manufacturing, popularization and popularization.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cover lock comprises a driving motor, a remote control key capable of controlling the driving motor, a lock tongue and a lock catch, wherein the lock tongue and the lock catch are used for locking a front cover, the lock tongue and the lock catch further comprise a safety baffle plate and a fixing plate arranged in a front cabin, a V-shaped opening is formed in the upper side edge of the fixing plate, the lock tongue comprises a locking opening, the locking opening and the bottom of the V-shaped opening are crossed and overlapped to form an annular locking area, the lock catch comprises two vertical connecting sections and a locking section which is integrally connected between the lower ends of the two connecting sections, so that the lock catch is in an upright U shape, the upper ends of the two connecting sections of the lock catch are connected to the front cover, an elastic cushion at least partially covering the lower part of the locking area is arranged on the side surface of the fixing plate, the driving motor is respectively in transmission connection with the lock tongue and the safety baffle plate through a transmission mechanism, the safety baffle plate has a locking state for locking the lock tongue and an unlocking state for releasing the lock tongue, and the lock tongue has a locking position for releasing the lock catch and an opening position for releasing the lock catch, the remote control key is provided with an unlocking key and a locking key, when the lock tongue is in a locking position, the locking section is positioned in the locking area, and the elastic pad abuts against the lower side of the locking section; when the front machine cover needs to be opened, the unlocking key of the remote control key is pressed once to drive the motor to rotate in the forward direction, and the transmission mechanism drives the safety baffle to be switched from a locking state to an unlocking state; pressing the unlocking key of the remote control key once again to drive the motor to continue to rotate positively, driving the lock tongue to be switched from the locking position to the releasing position through the transmission mechanism, and pushing the locking section of the lock catch upwards by the elastic pad to release the lock catch and the lock tongue; when the front cover needs to be closed, the front cover is pressed downwards, the locking section of the lock catch enters the V-shaped opening and is supported on the elastic pad, then the locking key of the remote control key is pressed, the driving motor rotates reversely to reset, and the lock tongue is reset to the locking position from the releasing position; then the safety baffle is reset to the locking state from the unlocking state.

Firstly, the driving motor drives the lock tongue to act through the transmission mechanism, so that the automatic control of the hood lock can be conveniently realized through the remote control key, namely, even if a driver is not in a cab, the hood lock can be conveniently unlocked by the remote control key. Particularly, the remote control key can completely unlock the machine cover lock only by pressing twice, thereby being beneficial to improving the unlocking safety and avoiding the abnormal unlocking of the machine cover lock caused by misoperation.

In addition, the invention is also provided with a safety baffle plate so that the lock tongue can be locked at a locking position, and abnormal unlocking of the lock tongue is effectively avoided. When the cover lock is required to be opened, the safety baffle is required to be switched to an unlocking state from a locking state of the locking spring bolt through the driving motor, the spring bolt is enabled to be in contact with the locking, at the moment, the driving motor acts again, the driving spring bolt is switched to an opening position from a locking position, the lock catch can be separated from the spring bolt, and a driver can open the front cover. When the front machine cover is closed and the machine cover lock is closed, only the locking key of the remote control key needs to be pressed, at the moment, the driving motor rotates reversely to reset, and the lock tongue is reset from the release position to the locking position through the transmission mechanism to lock the lock catch; then the safety baffle is reset to a locking state from an unlocking state, and reliable positioning and locking of the lock tongue are ensured.

In addition, the locking opening and the bottom of the V-shaped opening are overlapped in a crossed mode to form an annular locking area, and when the lock tongue is located at the locking position, namely the front cover is in the closed state, the locking section is located in the locking area, so that the lock catch can be reliably locked.

Especially, the fixed plate side is equipped with the cushion that at least part covers the regional lower part of locking, and like this, when the cover before closing, the locking section of hasp enters into the locking region through the V-arrangement opening in, locking section touching cushion to make the locking section reliably fix a position in the locking region, avoid because of the vibrations and the abnormal sound of cover in the automobile driving process before the cooperation clearance between locking region and the locking section causes, make things convenient for the cooperation of locking section and locking region simultaneously.

Preferably, the transmission mechanism comprises two steel wire pull wires for respectively controlling the lock tongue and the safety baffle, a first return spring is arranged on the lock tongue, a second return spring is arranged on the safety baffle, when the driving motor rotates reversely, the steel wire pull wires for controlling the lock tongue are released firstly, and the first return spring enables the lock tongue to rotate to the locking position from the releasing position; then the steel wire stay wire for controlling the safety baffle is released, and the second return spring enables the safety baffle to rotate from the unlocking state to the locking state.

It should be noted that the steel wire pull wire can be a steel wire similar to a bicycle wire brake, so that the driving motor can conveniently make the steel wire pull the lock tongue or the safety baffle plate, further change the position or the state of the lock tongue or the safety baffle plate, and the first return spring and the second return spring can make the lock tongue or the safety baffle plate automatically reset.

Preferably, the orientation of the locking opening is inclined from bottom to top, so that an included angle of 30-90 degrees is formed between the direction of the locking opening and the direction of the V-shaped opening, the lock tongue further comprises a convex locking end, and when the lock tongue is in a locking position and the safety baffle is in a locking state, the safety baffle abuts against the front side of the locking end in forward rotation; when the driving motor enables the safety baffle to rotate from the locking state to the unlocking state, the safety baffle is separated from the front side of the forward rotation of the locking end.

The invention ensures that an included angle of 30-90 degrees is formed between the direction of the locking opening and the direction of the V-shaped opening, thereby not only facilitating the locking of the lock catch, but also enabling the locking opening to block the V-shaped opening. When the locking section screens of hasp in the V-arrangement opening and in the locking opening of spring bolt, can ensure the reliable locking of hasp in vertical direction, and the V-arrangement opening on the fixed plate then is convenient for the restoration of hasp.

Preferably, the transmission mechanism comprises a base, the driving motor is a stepping motor arranged on the base, a motor shaft of the driving motor is coaxially connected with a lead screw, the lead screw is in threaded connection with a front driving sleeve and a rear driving sleeve, one end of the driving sleeve is a driving end, the other end of the driving sleeve is a control end, an axially extending axial chute is arranged outside the control end of the driving sleeve, a circumferential chute extending along the circumferential direction of the driving sleeve is connected to the rear end of the axial chute, two guide sliders are arranged on the base, the upper end of the first guide slider is positioned at the front end of the axial chute of the first driving sleeve, the upper end of the second guide slider is positioned at the tail end of the circumferential chute of the second driving sleeve, a steel wire pull wire for controlling the lock tongue is wound on the driving end of the first driving sleeve, a steel wire pull wire for controlling the safety baffle is wound on the driving end of the second driving sleeve, and when the lock key is pressed once, When the driving motor drives the screw rod to rotate in the forward direction, the second guide sliding block prevents the second driving sleeve from moving axially and slides to the starting end in the circumferential sliding groove and aligns to the axial sliding groove of the second driving sleeve, the second driving sleeve rotates synchronously along with the screw rod, the driving end of the second driving sleeve is a steel wire pull wire for winding and controlling the safety baffle, so that the safety baffle rotates from a locking state to an unlocking state, meanwhile, the first guide sliding block prevents the first driving sleeve from rotating, and the first driving sleeve moves axially to the rear end of the axial sliding groove and abuts against the first guide sliding block; pressing the unlocking key of the remote control key once again, driving the motor to continue to rotate positively, preventing the first driving sleeve from moving axially due to the prevention of the first guide sliding block, so as to rotate synchronously along with the screw rod, winding the steel wire pull wire for controlling the lock tongue by the driving end of the first driving sleeve, and enabling the lock tongue to rotate from the locking position to the releasing position, meanwhile, preventing the second driving sleeve from rotating continuously due to the prevention of the second guide sliding block, and thus moving axially until the second guide sliding block is positioned at the front end of the axial sliding groove of the second driving sleeve; when a locking key of the remote control key is pressed, the driving motor rotates reversely, the first guide sliding block prevents the first driving sleeve from moving axially and slides in the circumferential sliding groove, the first driving sleeve rotates reversely synchronously along with the lead screw until the first guide sliding block is aligned with the axial sliding groove of the first driving sleeve, the driving end of the first driving sleeve releases a steel wire pull wire for controlling the lock tongue, the first reset spring enables the lock tongue to reset from a releasing position to a locking position, then the axial sliding groove prevents the first driving sleeve from rotating continuously and moves axially until the first guide sliding block moves to the front end of the axial sliding groove, meanwhile, the second guide sliding block prevents the second driving sleeve from rotating continuously, the second driving sleeve moves axially until the second guide sliding block prevents the second driving sleeve from rotating and enables the second driving sleeve to move axially, and when the second guide sliding block moves to the rear end of the axial sliding groove, the second driving sleeve rotates reversely, the second guide sliding block slides in the circumferential sliding groove of the second driving sleeve, the driving end of the second driving sleeve releases a steel wire pull wire for controlling the safety baffle, and the second reset spring enables the safety baffle to rotate from an unlocking state to a locking state.

The transmission mechanism of the invention comprises a screw rod driven by a driving motor and two driving sleeves arranged on the screw rod, wherein steel wire pull wires for controlling a bolt and steel wire pull wires for controlling a safety baffle are respectively wound on the two driving sleeves. When the driving motor drives the screw rod to rotate forwards for the first time, the first driving sleeve moves axially, the lock tongue cannot be driven by the steel wire pull wire to rotate at the moment, and the second driving sleeve rotates to drive the safety baffle to rotate from a locking state to an unlocking state so as to release the locking of the lock tongue; when driving motor drives the lead screw forward rotation for the second time, first drive sleeve follows the lead screw and rotates to drive the spring bolt through the steel wire and rotate and make the hasp unblock, the hasp at this moment can separate with the spring bolt, thereby open preceding cover. When the front cover needs to be locked, the driving motor drives the screw rod to rotate reversely, the second driving sleeve at the moment only moves axially, the safety baffle keeps the original position still, and the lock tongue resets in a reverse rotating mode. Then the safety baffle rotates reversely to reset and lock the bolt, thereby completing an opening and closing process of the front cover.

That is, the invention can conveniently control the action sequence of the lock tongue and the safety baffle through two simple driving sleeves, ensure the reliable locking and the timely unlocking of the lock tongue and effectively avoid the false opening of the front machine cover.

Preferably, the elastic cushion comprises a deformation cavity and a clamping cavity, the deformation cavity is located at the bottom of the V-shaped opening, the clamping cavity is located at two sides of the fixing plate and flat, the upper end of the clamping cavity is communicated with the lower end of the deformation cavity, an air inlet hole is formed in the first clamping cavity, an elastic sheet for covering the air inlet hole is arranged on the inner side wall of the clamping cavity, one side of the elastic sheet is fixed on the inner side wall of the clamping cavity, an air outlet hole is formed in the second clamping cavity, an elastic sheet for covering the air outlet hole is arranged on the outer side wall of the clamping cavity, and one side of the elastic sheet is fixed on the outer side wall of the clamping cavity.

When the locking section that cover, hasp before we closed gets into in the V-arrangement opening, the locking section can touch and extrude the deformation chamber of cushion, and at this moment, the air pressure of deformation intracavity rises, then outwards flows through the venthole, and the air current of venthole pushes away the flexure strip in the outside, and the inboard flexure strip of inlet port closely pastes the inside wall that leans on the centre gripping chamber under the effect of atmospheric pressure. When the lock catch is unlocked and the front cover is opened, the deformation cavity is elastically restored, the air pressure in the deformation cavity is reduced, the outside air enters the clamping cavity and the deformation cavity through the air inlet hole at the moment, and the elastic sheet outside the air outlet cavity prevents the outside air from entering the clamping cavity and the deformation cavity. That is, the elastic sheet of the air inlet hole and the elastic sheet of the air outlet hole respectively form a one-way valve. Because the area of the air outlet hole is 5-10 times of that of the air inlet hole, the air inlet speed is far higher than the air outlet speed. Like this, when the locking section touching and extrusion cushion's deformation chamber, the venthole can slowly be given vent to anger to make the deformation chamber form the damping effect to the hasp. When opening preceding cover, the air in the external world can get into centre gripping chamber and deformation intracavity fast, and the hasp can be jack-up fast in the deformation chamber.

Therefore, the invention has the following beneficial effects: the cover can effectively avoid slight vibration and abnormal sound of the front cover in the running process of the vehicle, and can realize automatic opening and closing of the cover lock on the premise of ensuring the safe opening of the cover lock, so that the cover is convenient to use, simple in structure and beneficial to processing, manufacturing and popularization.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a structure of the elastic pad.

Fig. 3 is a schematic diagram of a transmission mechanism.

Fig. 4 is a schematic view of a drive sleeve configuration.

In the figure: 1. the locking device comprises a driving motor 11, a lead screw 2, a bolt 21, a locking end 22, a locking opening 221, a clamping section 222, a supporting section 3, a lock catch 4, a safety baffle 5, a steel wire pull wire 6, a fixing plate 61, a V-shaped opening 62, an elastic pad 621, a deformation cavity 622, a clamping cavity 623, an air inlet hole 624, an air outlet hole 625, an elastic sheet 7, a base 71, a bearing seat 8, a driving sleeve 81, a driving end 82, a control end 821, an axial sliding groove 822, a circumferential sliding groove 9 and a guiding sliding block.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

As shown in fig. 1, a cover lock for locking and unlocking a front cover of an electric vehicle specifically includes a driving motor made of a stepping motor, a remote control key (not shown in the figure) capable of controlling the operating state of the driving motor, a lock tongue 2 for locking the front cover, and a lock catch 3, wherein the lock catch is disposed on the front cover, and the lock tongue of the lock catch is disposed in a front cabin. The driving motor is in transmission connection with the lock tongue through a set of transmission mechanism, the lock tongue is provided with a locking position for locking the lock catch and an opening position for releasing the lock catch, and the remote control key is provided with an unlocking key and a locking key.

When the cover lock needs to be opened to open the front cover, the unlocking key of the remote control key is firstly pressed, the driving motor rotates forwards by an angle at the moment, so that the driving mechanism drives the lock tongue to be switched to the release position from the locking position, the lock tongue at the moment releases the locking of the lock catch, and the front cover can be opened upwards.

In order to avoid the false unlocking of the cover lock, the invention also comprises a safety baffle 4, and the driving motor is in transmission connection with the safety baffle through a transmission mechanism, so that the safety baffle has a locking state for locking the lock tongue and an unlocking state for releasing the lock tongue.

When the front cover is in a locking state and the lock tongue is in a locking position, the safety baffle is in a locking state of the locking lock tongue, and the driving motor cannot drive the lock tongue to act at the moment, so that the lock tongue is positioned in the locking position. When the front cover needs to be opened by opening the cover lock, the unlocking key of the remote control key can be pressed once, at the moment, the driving motor rotates forwards for an angle, and the transmission mechanism drives the safety baffle to be switched from the locking state to the unlocking state so as to release the locking of the lock tongue; then pressing the unlocking key of the remote control key once again, driving the motor to continue to rotate in the forward direction, keeping the safety baffle still, switching the lock tongue from the locking position to the releasing position, and separating the lock catch and the lock tongue to conveniently open the front machine cover upwards; when the front machine cover is closed and the machine cover lock needs to be closed, the locking key of the remote control key is pressed, the driving motor reversely rotates and resets, the lock tongue resets from the release position to the locking position through the transmission mechanism to restore the locking of the lock catch, and the safety baffle resets from the unlocking state to the locking state through the transmission mechanism to restore the locking of the lock tongue.

Preferably, the present invention further comprises a fixing plate 6 vertically disposed in the front cabin, and the latch bolt and the safety shield are rotatably coupled to the fixing plate, and a V-shaped opening 61 is disposed at an upper side of the fixing plate. The hasp includes two vertical linkage segments, the locking section of a body coupling between two linkage segment lower extremes to make the hasp be upright U-shaped, the upper end of two linkage segments of hasp is connected on the machine cover in the front. In addition, the latch bolt is of a sheet-like construction and includes a latch opening 22 and a male latch end 21. The orientation of the locking opening inclines to one side from bottom to top, and when the lock tongue is in the locking position, the locking opening and the V-shaped opening are overlapped with each other to form an annular locking area.

Thus, when the lock tongue is in the locking position and the safety shield is in the locking state, the locking section of the lock catch is positioned in the locking area formed by the locking opening and the V-shaped opening and is reliably locked, and the safety shield abuts against the front side of the locking end of the lock tongue in the forward rotation direction. That is, the lock tongue at this time cannot rotate in the forward direction to release the lock of the buckle; when the driving motor enables the safety baffle to rotate from a locking state to an unlocking state, the safety baffle is separated from the front side of the locking end in the forward rotation direction, and therefore the locking of the lock tongue is released; the bolt at this moment can rotate to the release position by the locking position, and at this in-process, the locking section of hasp can be followed and upwards slided out in the locking opening.

As shown in fig. 1 and 2, an elastic pad 62 is disposed on the side of the fixing plate to at least partially cover the lower portion of the locking region. When the current cover is closed, the spring bolt is in the locking position, the locking section is located the locking region, and the cushion supports and leans on locking section downside to make the locking section reliably fix a position in the locking region, avoid because of the cooperation clearance between the locking region and the locking section causes preceding cover vibrations and abnormal sound at the car in-process of traveling, the cushion at this moment is in the compression deformation state. When the unlocking key of the remote control key is pressed for the second time, the driving motor drives the lock tongue to be switched from the locking position to the releasing position through the transmission mechanism, the elastic pad is elastically restored, and therefore the locking section of the lock catch is pushed upwards, and the lock catch and the lock tongue are disengaged. When the front cover is pressed downwards to close the front cover, the locking section of the lock catch enters the V-shaped opening and is supported on the elastic pad, so that the elastic pad is compressed and deformed, and the locking section is reliably positioned in the locking area.

Further, the elastic pad includes a deformation chamber 621 at the bottom of the V-shaped opening, and a holding chamber 622 at both sides of the fixing plate, so that the longitudinal section of the elastic pad is in an inverted U shape, and the upper end of the holding chamber communicates with the lower end of the deformation chamber. In addition, set up the inlet port 623 on first centre gripping chamber, set up the silica gel flexure strip 625 that covers the inlet port on the inside wall in this centre gripping chamber, the flexure strip upside bonds on the inside wall in centre gripping chamber, sets up the venthole on second centre gripping chamber, sets up the silica gel flexure strip that covers the venthole on the lateral wall in this centre gripping chamber, and the flexure strip upside bonds on the lateral wall in centre gripping chamber.

When the locking section that cover, hasp before we closed gets into in the V-arrangement opening, the locking section can touch and extrude the deformation chamber of cushion, and at this moment, the air pressure of deformation intracavity rises, then outwards flows through the venthole, and the air current of venthole pushes away the flexure strip in the outside, and the inboard flexure strip of inlet port closely pastes the inside wall that leans on the centre gripping chamber under the effect of atmospheric pressure. When the lock catch is unlocked and the front cover is opened, the deformation cavity is elastically restored, the air pressure in the deformation cavity is reduced, the outside air enters the clamping cavity and the deformation cavity through the air inlet hole at the moment, and the elastic sheet outside the air outlet cavity prevents the outside air from entering the clamping cavity and the deformation cavity. That is, the elastic sheet of the air inlet hole and the elastic sheet of the air outlet hole respectively form a one-way valve. Since the velocity of the incoming gas will be much greater than the velocity of the outgoing gas. Like this, when the locking section touching and extrusion cushion's deformation chamber, the venthole can slowly be given vent to anger to make the deformation chamber form the damping effect to the hasp. When opening preceding cover, the air in the external world can get into centre gripping chamber and deformation intracavity fast, and the hasp can be jack-up fast in the deformation chamber.

Furthermore, an included angle of 30-90 degrees is formed between the locking opening and the direction of the V-shaped opening, so that the locking of the lock catch is facilitated, and the V-shaped opening can be blocked by the locking opening. When the locking section screens of hasp by V-arrangement opening and locking opening, can ensure the reliable locking of hasp in vertical direction, and the V-arrangement opening on the fixed plate then is convenient for the reset of hasp.

As a preferred scheme, the transmission mechanism comprises two steel wire drawing wires 5 which respectively control the lock tongue and the safety baffle, and the steel wire drawing wires can adopt steel wires similar to those used for braking a bicycle wire. The bolt is provided with a first reset spring (not shown in the figure), and the safety baffle is provided with a second reset spring (not shown in the figure). When the driving motor rotates forwards, the safety baffle can be driven by the steel wire pull wire to rotate from a locking state to an unlocking state so as to release the locking of the lock tongue; or the lock tongue is driven to rotate to the release position from the locking position through the steel wire pull wire. When the driving motor rotates reversely, a steel wire pull wire for controlling the lock tongue is released firstly, and at the moment, the first return spring enables the lock tongue to reset and rotate to a locking position from a releasing position; and then the steel wire pull wire for controlling the safety baffle is released, and at the moment, the second return spring enables the safety baffle to be reset and rotated from the unlocking state to the locking state.

It can be understood that the first return spring and the second return spring are both torsional springs to drive the bolt and the safety shield to rotate and reset.

Preferably, the lower side of the locking opening includes a catching section 221 disposed opposite to the upper side, and a supporting section 222 formed by extending the catching section outward, so that the lower side is longer than the upper side. Thus, when the lock tongue is in the locking position, the locking section of the lock catch is positioned between the clamping sections on the upper side and the lower side; when the spring bolt rotated to the release position by the locking position, the locking section of hasp then slided to the support section by the screens section, and the support section of spring bolt can continue to form the support of vertical direction to the hasp this moment, and the locking section of hasp then can upwards cross locking open-ended last side, and then upwards roll-off in locking opening and the V-arrangement opening.

As another preferred scheme, as shown in fig. 3 and 4, the transmission mechanism includes a base 7, the driving motor 1 is a stepping motor disposed on the base, a motor shaft of the driving motor is coaxially connected with one end of a lead screw 11, and the other end of the lead screw is supported on a bearing seat 71 on the base. The screw rod is connected with a front driving sleeve and a rear driving sleeve 8 in a threaded mode, the rear end of each driving sleeve is a driving end 81, and the front end of each driving sleeve is a control end 82.

Note that, one end of the bearing housing is referred to as a front end, and the other end of the drive motor is referred to as a rear end.

Further, an axially extending axial slide groove 821 is provided outside the control end of the drive sleeve, a circumferential slide groove 822 extending in the circumferential direction of the drive sleeve is connected to the rear end of the axial slide groove, and the axial slide groove and the circumferential slide groove are connected to each other in an L-shape. Two guide sliding blocks 9 are arranged on the base, the upper end of the first guide sliding block at the back is positioned at the front end of the axial sliding groove of the first driving sleeve at the back, and the upper end of the second guide sliding block at the front is positioned at the tail end of the circumferential sliding groove of the second driving sleeve at the front.

In addition, a steel wire pull wire for controlling the bolt is wound on the driving end of the first driving sleeve, and a steel wire pull wire for controlling the safety baffle is wound on the driving end of the second driving sleeve. When the unlocking key is pressed once and the driving motor drives the screw rod to rotate forwards, because the upper end of the second guide sliding block is positioned at the tail end of the circumferential sliding groove of the second driving sleeve, the second guide sliding block prevents the second driving sleeve from moving axially, the second driving sleeve synchronously rotates under the driving of the screw rod, correspondingly, the second guide sliding block slides from the tail end to the starting end connected with the axial sliding groove in the circumferential sliding groove of the second driving sleeve, the second guide sliding block is aligned with the axial sliding groove of the second driving sleeve, and the driving end of the second driving sleeve winds a steel wire stay wire for controlling the safety baffle, so that the safety baffle rotates from the locking state to the unlocking state. Meanwhile, the upper end of the first guide sliding block is located at the front end of the axial sliding groove of the first driving sleeve, so that the first guide sliding block prevents the first driving sleeve from synchronously rotating, and the first driving sleeve can only axially move to the rear end of the axial sliding groove and abut against the first guide sliding block. That is to say, the upper end of the first guide sliding block is located at the starting end of the circumferential sliding groove of the first driving sleeve, and in the process, the steel wire pull wire wound on the driving end of the first driving sleeve cannot drive the lock tongue to move; when the unlocking key of the remote control key is pressed again, the driving motor continues to rotate in the forward direction, and the upper end of the first guide sliding block is located at the starting end of the circumferential sliding groove of the first driving sleeve, so that the first driving sleeve is prevented by the first guide sliding block and cannot move axially, the first driving sleeve synchronously rotates along with the lead screw, the driving end of the first driving sleeve winds a steel wire pull wire for controlling the lock tongue, the lock tongue rotates to a release position from a locking position, and the upper end of the first guide sliding block moves to the tail end from the starting end of the circumferential sliding groove of the first driving sleeve. Meanwhile, the second guide sliding block is positioned at the starting end in the circumferential sliding groove of the second driving sleeve, so that the second driving sleeve cannot rotate continuously due to the stop of the second guide sliding block, the second driving sleeve moves axially until the second guide sliding block is positioned at the front end of the axial sliding groove of the second driving sleeve, and at the moment, the steel wire pull wire wound on the driving end of the second driving sleeve cannot drive the safety baffle to move.

When a locking key of the remote control key is pressed, the driving motor rotates reversely, and because the upper end of the first guide sliding block is located at the tail end of the circumferential sliding groove of the first driving sleeve, the first guide sliding block prevents the first driving sleeve from moving axially and slides from the tail end to the starting end in the circumferential sliding groove, the first driving sleeve synchronously rotates reversely along with the lead screw until the first guide sliding block rotates to the starting end of the circumferential sliding groove, the first guide sliding block at the moment is aligned with the axial sliding groove of the first driving sleeve, the driving end of the first driving sleeve releases a steel wire pull wire for controlling the lock tongue, and the first return spring enables the lock tongue to automatically return to the locking position from the releasing position. Along with the continuous reverse rotation of the driving motor, the first guide sliding block positioned at the rear end of the axial sliding groove of the first driving sleeve prevents the first driving sleeve from continuously rotating and changing into axial movement until the first guide sliding block moves to the front end of the axial sliding groove of the first driving sleeve; meanwhile, the second guide sliding block positioned at the front end of the axial sliding groove of the second driving sleeve prevents the second driving sleeve from rotating, and the second driving sleeve moves axially instead until the second guide sliding block moves to the rear end of the axial sliding groove of the second driving sleeve. The second driving sleeve can not move axially and can rotate reversely along with the continuous reverse rotation of the driving motor, the second guide sliding block is arranged at the tail end in a sliding way in the circumferential direction of the second driving sleeve from the starting end, the driving end of the second driving sleeve releases a steel wire pull wire for controlling the safety baffle, and the second return spring enables the safety baffle to rotate from an unlocking state to a locking state.

Claims

1. A cover lock comprises a driving motor, a remote control key capable of controlling the driving motor, a lock tongue and a lock catch, and is characterized by further comprising a safety baffle plate and a fixed plate arranged in the front engine room, wherein a V-shaped opening is formed in the upper side edge of the fixed plate, the lock tongue comprises a locking opening, the locking opening and the bottom of the V-shaped opening are crossed and overlapped to form an annular locking area, the lock catch comprises two vertical connecting sections and a locking section integrally connected between the lower ends of the two connecting sections, so that the lock catch is in an upright U shape, the upper ends of the two connecting sections of the lock catch are connected to the front engine cover, an elastic cushion at least partially covering the lower part of the locking area is arranged on the side surface of the fixed plate, the driving motor is respectively in transmission connection with the lock tongue and the safety baffle plate through a transmission mechanism, and the safety baffle plate has a locking state for locking the lock tongue and an unlocking state for releasing the lock tongue, the lock tongue is provided with a locking position for locking the lock catch and an opening position for releasing the lock catch, the remote control key is provided with an unlocking key and a locking key, when the lock tongue is positioned at the locking position, the locking section is positioned in the locking area, and the elastic cushion is abutted against the lower side of the locking section; when the front machine cover needs to be opened, the unlocking key of the remote control key is pressed once to drive the motor to rotate in the forward direction, and the transmission mechanism drives the safety baffle to be switched from a locking state to an unlocking state; pressing the unlocking key of the remote control key once again to drive the motor to continue to rotate positively, driving the lock tongue to be switched from the locking position to the releasing position through the transmission mechanism, and pushing the locking section of the lock catch upwards by the elastic pad to release the lock catch and the lock tongue; when the front cover needs to be closed, the front cover is pressed downwards, the locking section of the lock catch enters the V-shaped opening and is supported on the elastic pad, then the locking key of the remote control key is pressed, the driving motor rotates reversely to reset, and the lock tongue is reset to the locking position from the releasing position; then the safety baffle is reset to a locking state from an unlocking state: the transmission mechanism comprises a base, a driving motor is a stepping motor arranged on the base, a motor shaft of the driving motor is coaxially connected with a lead screw, the lead screw is in threaded connection with a front driving sleeve and a rear driving sleeve, one end of the driving sleeve is a driving end, the other end of the driving sleeve is a control end, an axially extending axial sliding groove is arranged outside the control end of the driving sleeve, a circumferential sliding groove extending along the circumferential direction of the driving sleeve is connected to the rear end of the axial sliding groove, two guide sliding blocks are arranged on the base, the upper end of a first guide sliding block is positioned at the front end of the axial sliding groove of the first driving sleeve, the upper end of a second guide sliding block is positioned at the tail end of the circumferential sliding groove of the second driving sleeve, a steel wire stay wire for controlling a lock tongue is wound on the driving end of the first driving sleeve, a steel wire stay wire for controlling a safety baffle is wound on the driving end of the second driving sleeve, and when a locking key is pressed once, When the driving motor drives the screw rod to rotate in the forward direction, the second guide sliding block prevents the second driving sleeve from moving axially and slides to the starting end in the circumferential sliding groove and aligns to the axial sliding groove of the second driving sleeve, the second driving sleeve rotates synchronously along with the screw rod, the driving end of the second driving sleeve is a steel wire pull wire for winding and controlling the safety baffle, so that the safety baffle rotates from a locking state to an unlocking state, meanwhile, the first guide sliding block prevents the first driving sleeve from rotating, and the first driving sleeve moves axially to the rear end of the axial sliding groove and abuts against the first guide sliding block; pressing the unlocking key of the remote control key once again, driving the motor to continue to rotate positively, preventing the first driving sleeve from moving axially due to the prevention of the first guide sliding block, so as to rotate synchronously along with the screw rod, winding the steel wire pull wire for controlling the lock tongue by the driving end of the first driving sleeve, and enabling the lock tongue to rotate from the locking position to the releasing position, meanwhile, preventing the second driving sleeve from rotating continuously due to the prevention of the second guide sliding block, and thus moving axially until the second guide sliding block is positioned at the front end of the axial sliding groove of the second driving sleeve; when a locking key of the remote control key is pressed, the driving motor rotates reversely, the first guide sliding block prevents the first driving sleeve from moving axially and sliding in the circumferential sliding groove, the first driving sleeve rotates reversely synchronously along with the lead screw until the first guide sliding block is aligned with the axial sliding groove of the first driving sleeve, the driving end of the first driving sleeve releases a steel wire pull wire for controlling the lock tongue, the first reset spring enables the lock tongue to reset from the releasing position to the locking position, then, the axial sliding groove prevents the first driving sleeve from rotating continuously and moving axially until the first guide sliding block moves to the front end of the axial sliding groove, meanwhile, the second guide sliding block prevents the second driving sleeve from rotating continuously, the second driving sleeve moves axially until the second guide sliding block moves to the rear end of the axial sliding groove, and then, the second driving sleeve rotates reversely, the second guide sliding block slides in the circumferential sliding groove of the second driving sleeve, the driving end of the second driving sleeve releases a steel wire pull wire for controlling the safety baffle, and the second reset spring enables the safety baffle to rotate from an unlocking state to a locking state.

2. The lid lock of claim 1, wherein the locking opening is oriented to be inclined from bottom to top such that the locking opening is oriented at an angle of 30 ° to 90 ° to the V-shaped opening, the locking tongue further comprises a protruding locking end, and the safety catch abuts against a forward side of the locking end when the locking tongue is in the locked position and the safety catch is in the locked position; when the driving motor enables the safety baffle to rotate from the locking state to the unlocking state, the safety baffle is separated from the front side of the forward rotation of the locking end.

3. The cover lock as claimed in claim 1, wherein the elastic pad comprises a deformation chamber at the bottom of the V-shaped opening, and flat holding chambers at both sides of the fixing plate, the upper end of the holding chamber communicates with the lower end of the deformation chamber, an air inlet hole is provided on the first holding chamber, an elastic plate covering the air inlet hole is provided on the inner side wall of the holding chamber, one side of the elastic plate is fixed on the inner side wall of the holding chamber, an air outlet hole is provided on the second holding chamber, an elastic plate covering the air outlet hole is provided on the outer side wall of the holding chamber, and one side of the elastic plate is fixed on the outer side wall of the holding chamber.