CN108005493A

CN108005493A - A kind of bag lock and luggage

Info

Publication number: CN108005493A
Application number: CN201810024175.4A
Authority: CN
Inventors: 柯慧子
Original assignee: Shanghai Mao Sheng Polytron Technologies Inc
Current assignee: Shanghai Mao Sheng Polytron Technologies Inc
Priority date: 2018-01-10
Filing date: 2018-01-10
Publication date: 2018-05-08
Anticipated expiration: 2038-01-10
Also published as: CN108005493B

Abstract

A kind of bag lock and luggage, bag lock include：Housing, driving device, transmission device, limiting device, device for ejecting, lock hook, control device and assistant locking apparatus；Control device promotes transmission device movement according to bluetooth unlocking signal or fingerprint unlocking signal control driving device, transmission device is set to drive limiting device away from lock hook, until limiting device, to institute's lock hook unlock, at this time, lock hook is ejected and limiting device carried out spacing by device for ejecting；Assistant locking apparatus is connected with limiting device and is compressed with the movement of transmission device, when lock hook is pressed down and is depressed into device for ejecting and is unlocked spacing to limiting device, assistant locking apparatus promotes limiting device to be moved towards lock hook, until limiting device locks lock hook.Due to realizing the unlatching of bag lock by Bluetooth signal or fingerprint signal, it is not necessary to which user keeps password firmly in mind, in addition, when the bag lock is applied to luggage, user is by Bluetooth signal or fingerprint signal with regard to that can open luggage, it is not necessary to keeps luggage password firmly in mind.

Description

A kind of bag lock and luggage

Technical field

The present invention relates to luggage technical field, and in particular to a kind of bag lock and luggage.

Background technology

As people work, travel, the needs for the trip such as go on business, all kinds of luggages occupy more and more in people's lives Important position, people often put some valuables and data into luggage in order to carry.Therefore, the safety of luggage and anti- Robber is increasingly valued by people, and bag lock becomes indispensable component in luggage.

Present bag lock is mostly mechanical code lock, which is provided with switch and fastener, and cryptopart plays Stop the effect of switch, when password not pair when, triggering swing arm trigger switch is carried out it is spacing, so as to reach the mesh for stopping and unlocking , when password is correct, swing arm is retracted, and releasing is spacing, and switching function comes into force.But mechanical cipher is latched in following defect：1. After user's long-time is without using luggage, often forgets password, cause user to be successfully again turned on luggage；2. machinery Coded lock is located on the outside of luggage, it causes inner couplings to misplace easily after by external impact, triggers mechanical code lock disabler, no It can realize the on or off of luggage.

The content of the invention

According in a first aspect, provide a kind of bag lock in a kind of embodiment, including housing, driving device, transmission device, limit Position device, device for ejecting, lock hook, control device and assistant locking apparatus；

Lock hook is arranged in housing upper surface, and device for ejecting is installed in housing and below lock hook, and control device is with driving Dynamic device is electrically connected, and driving device links with transmission device, and transmission device is connected with limiting device, and limiting device is movably locked Determine and unlock the lock hook；

Control device promotes transmission device movement according to bluetooth unlocking signal or fingerprint unlocking signal control driving device, makes Transmission device drives limiting device away from lock hook, until when limiting device unlock lock hook, device for ejecting is by lock hook pop-up and right Limiting device carries out spacing；

Assistant locking apparatus is connected with limiting device, and assistant locking apparatus is compressed with the movement of transmission device, treats lock hook It is pressed down when being depressed into device for ejecting and being unlocked spacing to the limiting device, assistant locking apparatus promotes limiting device towards lock Movement is hooked, until limiting device pair is locked with lock hook.

In a kind of embodiment, driving device includes motor and reduction gear box, and input terminal and the control device of motor are electrically connected Connect, the output terminal of motor is coupled to the input terminal of reduction gear box, and the output terminal of reduction gear box is coupled to transmission device.

In a kind of embodiment, control device control motor is rotated with first direction, and is driven and be driven by reduction gear box Device moves, and transmission device is driven limiting device away from lock hook, until limiting device unlocks lock hook；

After preset time, control device control motor is rotated with second direction, and is driven and be driven by reduction gear box Device resets.

In a kind of embodiment, transmission device includes push rod, has the stent and gear of rack；

One end of push rod is connected with limiting device, and the other end is connected with stent, gear respectively with reduction gear box and stent Rack linkage.

It is equipped with a kind of embodiment, in housing and is used to install the first of limiting device, device for ejecting and assistant locking apparatus Cavity, the second cavity for being connected push rod and for mounting bracket and the 3rd cavity of gear, gear drives stent in the 3rd Moved in cavity.

In a kind of embodiment, assistant locking apparatus includes pillar and Lock spring, and pillar is installed on limiting device, and pillar With push rod homonymy and balance, Lock spring is placed on pillar, and Lock spring is compressed into limiting device and with the movement of push rod Between the side wall of one cavity, when lock hook is pressed down and is depressed into device for ejecting and is unlocked spacing to limiting device, the lock that is compressed Determining spring promotes limiting device to be moved towards lock hook, until limiting device locks lock hook.

In a kind of embodiment, device for ejecting includes elastomeric element and upper frame；

Being equipped with card convex above upper frame, limiting device is equipped with the card slot to cooperate with card convex, and upper frame lower section is in Jiong type, and first The position-limited rack spacing to upper frame is equipped with cavity, position-limited rack is in Qian type, and position-limited rack is located in the Jiong type below upper frame, elastomeric element In position-limited rack；

When limiting device unlocks lock hook, elastomeric element is upspring upper frame, upper frame ejection lock hook, meanwhile, the card convex card of upper frame Enter the card slot of limiting device, the lowermost limit of upper frame makes upper frame carry out limiting device spacing in position-limited rack both sides.

According to second aspect, a kind of luggage, including babinet are provided in a kind of embodiment, the above-mentioned case being arranged on babinet Bao Suo, bag lock are arranged in babinet.

In a kind of embodiment, hand handle is further included, hand handle includes handle, handle and fixing piece, and fixing piece passes through babinet and case The housing of bag lock is fixedly mounted.

In a kind of embodiment, fixing piece is equipped with fingerprint identification device, and fingerprint identification device is filled with the control in bag lock Confidence number connects.

In a kind of embodiment, fixing piece is equipped with bluetooth module, and bluetooth module is connected with the control device signal in luggage.

In a kind of embodiment, hand handle is equipped with the power supply for being used for being electrically connected to bag lock.

According to the third aspect, a kind of luggage, including babinet, hand handle, trigger device and bag lock are provided in a kind of embodiment Tight mechanism；

Trigger device is installed in hand handle, and luggage retaining mechanism is installed on babinet, when trigger device is triggered be used for Luggage retaining mechanism sends trigger signal, and luggage retaining mechanism controls opening or/and the closing of babinet according to trigger signal.

In a kind of embodiment, luggage retaining mechanism includes bag lock, and bag lock includes：Housing, driving device, transmission dress Put, limiting device, device for ejecting, lock hook, control device and assistant locking apparatus；

Bluetooth unlocking signal or fingerprint unlocking signal the control driving device that control device is sent according to trigger device promote Transmission device moves, and transmission device is driven limiting device away from lock hook, until limiting device unlocks lock hook, at this time, pop-up Lock hook is ejected and limiting device carried out spacing by device；

Assistant locking apparatus is connected with limiting device, and assistant locking apparatus is compressed with the movement of transmission device, treats lock hook It is pressed down when being depressed into the device for ejecting and being unlocked spacing to limiting device, assistant locking apparatus promotes limiting device towards lock Movement is hooked, until limiting device locks lock hook.

The bag lock of foundation above-described embodiment, due to realizing the unlatching of bag lock by Bluetooth signal or fingerprint signal, no Need user to keep password firmly in mind, avoid user forget Password cannot open luggage situation occur, in addition, working as the bag lock application During to luggage, which is hidden in box house, effectively protects bag lock from external impact.

Brief description of the drawings

Fig. 1 is bag lock structure diagram；

Fig. 2 is the partial enlarged view of Fig. 1；

Fig. 3 is bag lock opening schematic diagram；

Fig. 4 is the partial enlarged view of Fig. 3；

Fig. 5 is the hand handle cooperation scheme of installation of bag lock and babinet；

Fig. 6 is bag lock and the overall structure figure of suitcase fit applications.

Embodiment

The present invention is described in further detail below by embodiment combination attached drawing.

Embodiment one：

This example provides a kind of bag lock, there is the risk problem forgotten, the case of this example to solve the password of existing bag lock Bag lock is opened by bluetooth or fingerprint, keeps password firmly in mind without user.

Specifically, the structure chart of the bag lock of this example as shown in Figure 1, its partial enlarged view as shown in Fig. 2, including housing 1, Driving device 2, transmission device 3, limiting device 4, device for ejecting 5, lock hook 6, control device and assistant locking apparatus 7；Each component Mechanical cooperation be：Lock hook 6 is arranged in 1 upper surface of housing, and device for ejecting 5 is installed in housing 1 and under lock hook 6 Side, control device are electrically connected with driving device 2, and driving device 2 links with transmission device 3, and transmission device 3 connects with limiting device 4 Connect, limiting device 4 movably locks and unlock the lock hook 6.

The working method of the bag lock of capital is：Bag lock is opened：Control device is opened according to bluetooth unlocking signal or fingerprint Lock signal control driving device 2 promotes transmission device 3 to move, and transmission device 3 is driven limiting device 4 away from lock hook 6, until limit Position device 4 unlocks lock hook 6, and at this time, lock hook 6 is ejected and spacing, bag lock unlatching is carried out to limiting device 4 by device for ejecting 5 State diagram afterwards is as shown in figure 3, its partial enlarged view is as shown in Figure 4；Bag lock is opened and closed：Assistant locking apparatus 7 and limiting device 4 Connection, assistant locking apparatus 7 are compressed with the movement of transmission device 3, treat that lock hook 6 is pressed down and be depressed into device for ejecting 5 to spacing dress When putting 4 and being unlocked spacing, assistant locking apparatus 7 promotes limiting device 4 to be moved towards lock hook 6, until limiting device 4 is to lock hook 6 are locked.

The structure of each component and composition in this example are described in detail below.

The driving device 2 of this example includes motor 21 and reduction gear box 22, and input terminal and the control device of motor 21 are electrically connected Connect, the output terminal of motor 21 is coupled to the input terminal of reduction gear box 22, and the output terminal of reduction gear box 22 is filled coupled to transmission Put 3；It should be noted that this example not only increases the torque of motor 21 using reduction gear box 22, moreover, by selecting reducing gear Roller box 22 can also minimize motor 21.

By the driving device 2 of above-mentioned setting, the control device specific works of this example are as follows：When bag lock is opened, control Device is rotated according to bluetooth unlocking signal or fingerprint unlocking signal control motor 21 with first direction, and passes through reduction gear box 22 Driving transmission device 3 moves, and transmission device 3 is driven limiting device 4 away from lock hook 6, until limiting device unlocks lock hook 6, Bag lock is completed to open；Further, in order to be then turned on bag lock next time, transmission device 3 needs to reset, for transmission device 3 Operation is resetted, this example provides following two schemes：The first scheme：Trigger control device is controlled by outside, makes control device Control motor 21 is rotated with second direction, and the second direction is with first direction on the contrary, so that transmission device 3 resets；Second of side Case：After preset time, e.g., after bag lock is opened 5 seconds, control device active control motor 21 is rotated with second direction, and is led to Crossing reduction gear box 22 drives transmission device 3 to reset；To improve user experience and realizing the full-automation of bag lock, preferably , control transmission device 3 to reset in the second.

The transmission device 3 of this example includes connector 31, has the stent 32 and gear assembly 33 of rack, wherein, to consider Lock core is set in bag lock, redundant space is set to the lock core, the gear assembly 33 of this example is combined by four miniature gears；Connection One end of part 31 is connected with limiting device 4, and the other end is connected with stent 32, is linked between gear assembly 33, and front end gear with Reduction gear box 22 links, and tailpiece gear and the rack of stent 32 link；Since gear assembly 33 passes through rack drives stent 32 It is mobile, meanwhile, stent 32 promotes limiting device 4 to move by connector 31, so, which has rigidity, still, when When gear assembly 33 is resetted by rack drives stent 32, since device for ejecting 5 is spacing to limiting device 4 at this time so that spacing Device 4 is immovable, if to realize the reset of stent 32, the connector 31 of this example must have certain flexibility, the flexibility It is enough to reset stent 32, therefore, the connector 31 of this example has rigidity and flexibility, it is preferred that the connector 31 of this example is steel Silk.

Further, it is equipped with the housing 1 of this example and is used to limiting device 4, device for ejecting 5 and assistant locking apparatus 7 are installed First cavity 11, the second cavity 12 for being connected connector 31 and for mounting bracket 32 and the 3rd cavity of gear assembly 33 13, wherein, gear assembly drives stent 32 to be moved in the 3rd cavity, so that limiting device 4 moves in the first cavity 11.

Device for ejecting 5 includes elastomeric element 51 and upper frame 52, and the top of upper frame 52 is equipped with card convex 53, limiting device 4 equipped with The card slot 41 that card convex 53 cooperates, the lower section of upper frame 52 are in Jiong type, and the position-limited rack spacing to upper frame 52 is equipped with the first cavity 11 8, position-limited rack 8 is in Qian type, and position-limited rack 8 is located in the Jiong type of the lower section of upper frame 52, and elastomeric element 51 is located in position-limited rack 8；Spacing dress When putting 4 pairs of lock hooks 6 and unlocking, elastomeric element 51 is upspring upper frame 52, and upper frame 52 ejects lock hook 6, meanwhile, the card convex 53 of upper frame 52 is caught in The card slot 41 of limiting device 4, the lowermost limit of upper frame 52 make upper frame 52 carry out limiting device 4 spacing in 8 both sides of position-limited rack.

It should be noted that after bag lock is applied to the lockset of babinet, when opening babinet, the device for ejecting 5 of this example is not Only have the function of to eject lock hook 6, meanwhile, since device for ejecting 5 and limiting device 4 interlock, device for ejecting 5 can also be into one The lock hook 6 that walking prevents from being ejected springs back and locks babinet, e.g., when user, which opens babinet, puts article, is in a hurry by chance and temporarily The short time is needed to handle, at this time, user shuts babinet, but is not intended to bag lock and locks babinet, then when user shuts babinet, The device for ejecting 5 of this example with limiting device 4 because interlocking, and therefore, the upper frame 52 of device for ejecting 5 limits lock hook 6 and continues traveling downwardly, into And can prevent to interlock between lock hook 6 and limiting device 4, then after user unlocks babinet, without worry babinet self-locking.

The assistant locking apparatus 7 of this example includes pillar 71 and Lock spring 72, and pillar 71 is installed on limiting device 4, and props up Column 71 and 31 homonymy of connector and balance, Lock spring 72 are placed on pillar 71, Lock spring 72 with connector 31 mobile quilt Be compressed between the side wall of 4 and first cavity 11 of limiting device, treat lock hook 6 be pressed down be depressed into device for ejecting 5 to limiting device 4 into When row unlock is spacing, the Lock spring 72 compressed promotes limiting device 4 to be moved towards lock hook 6, until limiting device 4 is to lock hook 6 are locked.

The bag lock that this example provides realizes unlocking function by ingehious design combination bluetooth or fingerprint, avoids user's something lost Forget password.

Embodiment two：

Based on embodiment one, this example provides a kind of luggage, including babinet, the bag lock being arranged on babinet, the bag lock Concrete structure equipment and operation principle refer to embodiment one, this example does not repeat.

In this example, bag lock is arranged in babinet, is led when being exposed to avoid bag lock outside babinet after by external impact Cause inner couplings dislocation.

The luggage of this example further includes hand handle 9, and hand handle 9 includes handle 91, handle 92 and fixing piece 93, and fixing piece 93 passes through case The housing 1 of body and bag lock is fixedly mounted, and handle 92 is fixedly connected with fixing piece 93, and handle 91 is integrally formed with handle 92, its Scheme of installation is as shown in Figure 5.

Further, fixing piece 93 is equipped with fingerprint identification device, and fingerprint identification device is believed with the control device in bag lock Number connection, in other embodiments, fixing piece is equipped with bluetooth module, the control device in the bluetooth module and the luggage Signal connects；User opens the bag lock in babinet by fingerprint recognition or bluetooth recognition, without keeping password firmly in mind.

Further, the hand handle of this example is equipped with the power supply for being used for being electrically connected to bag lock, to supply control device, motor etc. Electricity, the power supply can be rechargeable batteries.

The luggage of this example can not only realize that bluetooth or fingerprint are unlocked, and lockset can also be protected, avoid lockset by External impact.

It should be noted that the luggage of this example can be suitcase, tool box etc., as long as can match somebody with somebody with the bag lock of the present invention Close and use, luggage password need not be kept firmly in mind by reaching user, by bluetooth or fingerprint with regard to that can open babinet.Wherein, bag lock and trip The design sketch that row case is used cooperatively is as shown in Figure 6.

Embodiment three：

Based on embodiment one and embodiment two, this example provides another luggage for keeping password firmly in mind without user, the luggage Including babinet, hand handle, trigger device and luggage retaining mechanism, wherein, trigger device is installed in hand handle, luggage retaining mechanism peace Loaded on babinet, for sending trigger signal to luggage retaining mechanism when trigger device is triggered, luggage retaining mechanism is according to this The opening of trigger signal control babinet or/and closing.

It should be noted that the babinet and hand handle of this example are identical with the babinet in embodiment two and handle structure, this example Trigger device can be such as the fingerprint identification device or bluetooth module in embodiment two, or other trigger modules, equally , the mounting means that may be referred in embodiment two is installed fingerprint identification device or bluetooth module, can also be according to it He, which designs, needs for trigger device to be installed on the other positions of hand handle, as long as facilitating user to trigger.

The luggage retaining mechanism of this example can be installed on the inside of babinet, can also be installed on the outside of babinet, specific peace Holding position is not construed as limiting, as long as opening or/and the closing of babinet can be realized according to the trigger signal of trigger device.

Likewise, the luggage retaining mechanism of this example can include the bag lock as described in embodiment one, if embodiment one Bag lock, then the luggage retaining mechanism of this example can realize automatically opening up for babinet automatically by trigger device, i.e. this example The unlocking signal that luggage retaining mechanism is assigned according to trigger device automatically opens up babinet, and, the closing of babinet then needs artificial hand It is dynamic to close.

Alternatively, the luggage retaining mechanism of this example can also be other locking machines in addition to the bag lock that embodiment one provides Structure, which automatically can close babinet according to the shutdown signal that trigger device is assigned, and the opening of babinet then needs Will be by manually opening, at this time, it is not required that user keeps password firmly in mind, and e.g., the luggage retaining mechanism is first according to trigger device The unlocking signal assigned carries out password unlock, then, then for work manual unlocking babinet of helping others.

Alternatively, the luggage retaining mechanism of this example can also be other locking machines in addition to the bag lock that embodiment one provides Structure, unlocking signal which can assign according to trigger device automatically open up babinet and are assigned according to trigger device Shutdown signal automatically closes babinet, i.e. oneself of babinet is realized in the order that the luggage retaining mechanism can be assigned according to trigger device It is dynamic to open and be automatically closed.

Use above specific case is illustrated the present invention, is only intended to help and understands the present invention, not limiting The system present invention.For those skilled in the art, according to the thought of the present invention, can also make some simple Deduce, deform or replace.

Claims

A kind of 1. bag lock, it is characterised in that including：Housing, driving device, transmission device, limiting device, device for ejecting, lock Hook, control device and assistant locking apparatus；

The lock hook is arranged in the housing upper surface, and the device for ejecting is installed in the housing and under the lock hook Side, the control device are electrically connected with the driving device, and the driving device links with the transmission device, the transmission dress Put and be connected with the limiting device, the limiting device movably locks and unlock the lock hook；

The control device controls the driving device to promote the transmission to fill according to bluetooth unlocking signal or fingerprint unlocking signal Movement is put, the transmission device is driven the limiting device away from the lock hook, until the limiting device is to the lock hook The lock hook is ejected and the limiting device carried out spacing by unlock, at this time, the device for ejecting；

The assistant locking apparatus is connected with the limiting device, the assistant locking apparatus with the transmission device mobile quilt Compression, when the lock hook is pressed down and is depressed into the device for ejecting and is unlocked spacing to the limiting device, the auxiliary lock Determining device promotes the limiting device to be moved towards the lock hook, until the limiting device locks the lock hook.
2. bag lock as claimed in claim 1, it is characterised in that the driving device includes motor and reduction gear box, institute The input terminal for stating motor is electrically connected with the control device, and the output terminal of the motor is coupled to the input of the reduction gear box End, the output terminal of the reduction gear box are coupled to the transmission device.
3. bag lock as claimed in claim 2, it is characterised in that the control device control motor is rotated with first direction, And drive the transmission device to move by the reduction gear box, the transmission device is driven the limiting device away from institute Lock hook is stated, until the limiting device unlocks the lock hook；

After preset time, the control device controls the motor to be rotated with second direction, and passes through the reduction gear box The transmission device is driven to reset.
4. bag lock as claimed in claim 2, it is characterised in that the transmission device includes connector, has the branch of rack Frame and gear assembly；

The connector has rigidity and flexibility, and one end of the connector is connected with the limiting device, the other end with it is described Stent connects, the gear assembly linkage, and front end gear links with the reduction gear box, tailpiece gear and the stent Rack links.
5. bag lock as claimed in claim 4, it is characterised in that be equipped with the housing be used to installing the limiting device, First cavity of device for ejecting and assistant locking apparatus, the second cavity for being connected the connector and for installing the branch 3rd cavity of frame and gear assembly, the gear assembly drive the stent to be moved in the 3rd cavity.
6. bag lock as claimed in claim 5, it is characterised in that the assistant locking apparatus includes pillar and Lock spring, The pillar is installed on limiting device, and the pillar and the connector homonymy and balance, the Lock spring are placed on described On pillar, the Lock spring is compressed into the side wall of the limiting device and first cavity with the movement of the connector Between, when the lock hook is pressed down and is depressed into the device for ejecting and is unlocked spacing to the limiting device, the institute that is compressed Stating Lock spring promotes the limiting device to be moved towards the lock hook, until the limiting device locks the lock hook It is fixed.
7. bag lock as claimed in claim 5, it is characterised in that the device for ejecting includes elastomeric element and upper frame；

Be equipped with card convex above the upper frame, the limiting device is equipped with the card slot with card convex mutual cooperation, under the upper frame Side be in Jiong type, and first cavity is interior to be equipped with the position-limited rack spacing to the upper frame, and the position-limited rack is in Qian type, the position-limited rack In the Jiong type below the upper frame, the elastomeric element is located in position-limited rack；

When the limiting device unlocks the lock hook, the elastomeric element is upspring the upper frame, and the upper frame ejects the lock Hook, meanwhile, the card convex of the upper frame is caught in the card slot of the limiting device, and the lowermost limit of the upper frame is in the position-limited rack two Side, makes the upper frame carry out the limiting device spacing.
A kind of 8. luggage, it is characterised in that including babinet, be arranged on the babinet such as any one of claim 1-7 institutes The bag lock stated, the bag lock are arranged in the babinet.
9. luggage as claimed in claim 8, it is characterised in that further include hand handle, the hand handle includes handle, handle and fixation Part, the fixing piece are fixedly mounted by the housing of the babinet and the bag lock.
10. luggage as claimed in claim 9, it is characterised in that the fixing piece is equipped with fingerprint identification device, the fingerprint Identification device is connected with the control device signal in the bag lock.
11. luggage as claimed in claim 9, it is characterised in that the fixing piece is equipped with bluetooth module, the bluetooth module It is connected with the control device signal in the luggage.
12. luggage as claimed in claim 9, it is characterised in that the hand handle, which is equipped with, is used for what is be electrically connected to the bag lock Power supply.
13. a kind of luggage, it is characterised in that including babinet, hand handle, trigger device and luggage retaining mechanism；

The trigger device is installed in the hand handle, and the luggage retaining mechanism is installed on the babinet, the triggering dress Put and be used to send trigger signal to the luggage retaining mechanism when being triggered, the luggage retaining mechanism is according to the trigger signal Control opening or/and the closing of the babinet.
14. luggage as claimed in claim 13, it is characterised in that the luggage retaining mechanism includes bag lock, the luggage Lock includes：Including：Housing, driving device, transmission device, limiting device, device for ejecting, lock hook, control device and secondary locking Device；

The lock hook is arranged in the housing upper surface, and the device for ejecting is installed in the housing and under the lock hook Side, the control device are electrically connected with the driving device, and the driving device links with the transmission device, the transmission dress Put and be connected with the limiting device, the limiting device movably locks and unlock the lock hook；

The bluetooth unlocking signal or fingerprint unlocking signal that the control device is sent according to the trigger device control the driving Device promotes the transmission device movement, the transmission device is driven the limiting device away from the lock hook, until described Limiting device unlocks the lock hook, and at this time, the lock hook is ejected and the limiting device is limited by the device for ejecting Position；

The assistant locking apparatus is connected with the limiting device, the assistant locking apparatus with the transmission device mobile quilt Compression, when the lock hook is pressed down and is depressed into the device for ejecting and is unlocked spacing to the limiting device, the auxiliary lock Determining device promotes the limiting device to be moved towards the lock hook, until the limiting device locks the lock hook.