CN209509721U - Hanging coded lock - Google Patents

Abstract

The utility model relates to a kind of hanging coded locks.The hanging coded lock includes shell, U-shaped latch hook, code component and latch components；The both ends of the U-shaped latch hook are actively inserted in the shell, and one end of the latch hook is provided with arrived tableting, and the relief portion being oppositely arranged and pressure section are formed in the arrived tableting；The code component is contained in the shell, the code component includes rotor and multiple letter disk wheels, the rotor includes rotation axis and multiple chucks, one end of the rotation axis is adjacent to the arrived tableting, the multiple chuck is fixed on spaced reciprocally in the rotation axis, the periphery of the chuck is recessed with bayonet, and the multiple letter disk wheel is sheathed in the rotation axis.The hanging coded lock Modify password is more convenient.

Description

Hanging coded lock

Technical field

The utility model relates to a kind of hanging coded locks.

Background technique

With the development of society, hanging coded lock with more and more extensive.Hanging coded lock generally comprises shell, lock Mechanism, latch hook and combination disk.The latching device is set in the shell, and the latch hook is respectively set with the combination disk In the shell opposite end and connect with the latching device.By the way that combination disk is dialed to correct position The second portion is set to be detached from the shell, to open the hanging coded lock.However, the modification of traditional hanging coded lock The operation of password is relatively complicated.

Utility model content

Based on this, it is necessary to provide a kind of Modify password conveniently hanging coded lock.

A kind of hanging coded lock, including shell, U-shaped latch hook, code component and latch components；The both ends of the U-shaped latch hook It is actively inserted in the shell, one end of the latch hook is provided with arrived tableting, and opposite set is formed in the arrived tableting The relief portion and pressure section set；The code component is contained in the shell, the code component include rotor with it is multiple Letter disk wheel, the rotor include rotation axis and multiple chucks, and one end of the rotation axis is the multiple adjacent to the arrived tableting Chuck is fixed on spaced reciprocally in the rotation axis, and the periphery of the chuck is recessed with bayonet, and the multiple letter disk wheel covers In the rotation axis, the multiple letter disk wheel is actively arranged in the side of the multiple chuck respectively；The lock group Part includes locked body, elastic component and two ripple pearls, is convexly equipped with multiple forks piece on the locked body, the elastic component is held in institute It states on locked body and is respectively clamped into the multiple forks piece in the bayonet of the multiple chuck, described two ripple pearls are located at institute It states the inside two sides of U-shaped latch hook and is held on the locked body, described two ripple pearls are engaged with the U-shaped latch hook.

In a wherein embodiment, the arrived tableting is the D-shaped sheet body being convexly equipped on the U-shaped latch hook, described to keep away It allows in portion and is formed with evacuation plane, be formed on the pressure section and compress convex surface.

In a wherein embodiment, the U-shaped latch hook includes the connecting rod being oppositely arranged and latch hook bar, the connection The length of bar is greater than the length of the latch hook bar, and the arrived tableting is convexly equipped in the periphery of the connecting rod.

In a wherein embodiment, the connecting rod has been respectively formed on the latch hook bar and has been engaged hole, described two Occlusion hole is oppositely arranged, and described two ripple pearls are respectively accommodated in described two occlusion holes, the connecting rod and the rotation axis Vertically.

In a wherein embodiment, baffle is convexly equipped in the connecting rod, the baffle and the arrived tableting are mutual It is spaced, is also arranged with pressure spring in the connecting rod, the opposite end of the pressure spring is held in the shell and the baffle respectively On.

It in a wherein embodiment, is formed in the shell and supports slot, the connecting rod is arranged in described support In slot, for the pressure spring between the baffle and the arrived tableting, the pressure spring is held in institute far from one end of the baffle State the bottom for supporting slot.

In a wherein embodiment, the locked body further includes ontology, and the multiple forks piece convexedly stretches in the ontology On, the opposite sides of the ontology, which is respectively formed with, supports shoulder, and described two ripple pearls are held in described two support on shoulder respectively.

In a wherein embodiment, installing slot is offered in the ontology, the elastic component is contained in the installing In slot, and the opposite end of the elastic component is held in respectively on the side wall and the shell of the installing slot.

It further include water repellent component in a wherein embodiment, the water repellent component includes waterproof pad and marine glue Lid, the waterproof pad are set to the inside top of the shell, and the U-shaped latch hook is arranged in the waterproof pad, described Marine glue lid is rotatably arranged in the bottom of the shell and gear sets the multiple letter disk wheel, and the marine glue, which covers, to be offered out Water hole.

In a wherein embodiment, further include mutually matched undertaking shell and lid set shell, the undertaking shell with it is described Lid sets shell and is set in the shell, and the undertaking shell and the lid set and be formed with installing space, the latch components between shell It is contained in the installing space with the code component, the lid, which is set, is additionally provided with bonding jumper on shell, the bonding jumper is convex Equipped with multiple elastic bonding jumpers, the multiple elasticity bonding jumper is actively pressed on respectively on the multiple letter disk wheel.

When needing Modify password, in the state that the hanging coded lock is opened, i.e., one end of the described U-shaped latch hook is from described When deviating from shell, the U-shaped latch hook is rotated to drive the arrived tableting to rotate so that the relief portion of the arrived tableting is towards institute State locked body；Then the U-shaped latch hook is pressed, so that the relief portion of the arrived tableting is directed at the end of the rotation axis, then is revolved Turn the U-shaped latch hook so that the pressure section of the arrived tableting presses on the end of the rotation axis, at this time the rotation axis because It is compressed and the multiple chuck is driven to be detached from the multiple letter disk wheel, i.e., rotatable the multiple letter disk wheel is new close to be arranged Code.After new password is set, then the U-shaped latch hook is rotated to discharge the rotation axis, so that the rotation axis drives The multiple chuck return lays equal stress on neocaine on the multiple letter disk wheel.Since the hanging coded lock of the utility model is being modified When password, without specifically changing cipher key, so that the operation of the Modify password of the hanging coded lock is more convenient.

Detailed description of the invention

Fig. 1 is the stereoscopic schematic diagram of the hanging coded lock of an embodiment.

Fig. 2 is the stereoscopic schematic diagram that hanging coded lock removes after shell shown in Fig. 1.

Fig. 3 is the in-built stereoscopic schematic diagram of the hanging coded lock of an embodiment.

Fig. 4 is the stereoscopic schematic diagram of the code component of an embodiment.

Specific embodiment

The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model, It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this The disclosure of type understands more thorough and comprehensive.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", " right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Term used herein is intended merely to description specific embodiment Purpose, it is not intended that in limitation the utility model.Term " and or " used herein includes one or more relevant institutes Any and all combinations of list of items.

The utility model relates to a kind of hanging coded locks.For example, the hanging coded lock includes shell, U-shaped latch hook, password Component and latch components；The both ends of the U-shaped latch hook are actively inserted in the shell, and one end of the latch hook is provided with Arrived tableting.For example, being formed with the relief portion being oppositely arranged and pressure section in the arrived tableting；The code component is contained in described In shell, the code component includes rotor and multiple letter disk wheels, and the rotor includes rotation axis and multiple chucks.Example Such as, one end of the rotation axis is fixed in the rotation axis spaced reciprocally adjacent to the arrived tableting, the multiple chuck, institute The periphery for stating chuck is recessed with bayonet.For example, the multiple letter disk wheel is sheathed in the rotation axis, the multiple letter disk wheel It is actively arranged in the side of the multiple chuck respectively.For example, the latch components include locked body, elastic component and two Ripple pearl.For example, being convexly equipped with multiple forks piece on the locked body, the elastic component is held on the locked body and makes the multiple Forks piece is respectively clamped into the bayonet of the multiple chuck.For example, described two ripple pearls are located at the inside two of the U-shaped shell Side is simultaneously held on the locked body, and described two ripple pearls are engaged with the U-shaped latch hook.For another example, a kind of hanging coded lock, Including shell, U-shaped latch hook, code component and latch components；The both ends of the U-shaped latch hook are actively inserted in the shell Interior, one end of the latch hook is provided with arrived tableting.For example, being formed with the relief portion being oppositely arranged in the arrived tableting and compressing Portion；The code component is contained in the shell, and the code component includes rotor and multiple letter disk wheels, the rotor Including rotation axis and multiple chucks.For example, one end of the rotation axis, adjacent to the arrived tableting, the multiple chuck is spaced apart from each other Ground is fixed in the rotation axis, and the periphery of the chuck is recessed with bayonet, and the multiple letter disk wheel is sheathed on the rotation On axis.For example, the multiple letter disk wheel is actively arranged in the side of the multiple chuck respectively.For example, the latch components Including locked body, elastic component and two ripple pearls, multiple forks piece are convexly equipped on the locked body.For example, the elastic component supports In on the locked body and being respectively clamped into the multiple forks piece in the bayonet of the multiple chuck.For example, described two ripple pearls It is located at the inside two sides of the U-shaped shell and is held on the locked body, described two ripple pearls are locked with the U-shaped Hook occlusion.

Please refer to Fig. 1 and Fig. 2, a kind of hanging coded lock 100, including shell 10, U-shaped latch hook 20, code component 30 and lock Buckle assembly 40；The both ends of the U-shaped latch hook are actively inserted in the shell.Referring also to Fig. 3, one end of the latch hook It is provided with arrived tableting 21, the relief portion 211 being oppositely arranged and pressure section 212 are formed in the arrived tableting；The code component It is contained in the shell.The code component includes rotor 31 and multiple letter disk wheels 32, and the rotor includes rotation axis 311 with multiple chucks 312, adjacent to the arrived tableting, the multiple chuck is fixed on spaced reciprocally for one end of the rotation axis In the rotation axis.Referring to Figure 4 together, the periphery of the chuck is recessed with bayonet 3121, and the multiple letter disk wheel is arranged In in the rotation axis, the multiple letter disk wheel is actively arranged in the side of the multiple chuck respectively；The latch components Including locked body 41, elastic component 42 and two ripple pearls 43, multiple forks piece 411, the elastic component are convexly equipped on the locked body It is held on the locked body and is respectively clamped into the multiple forks piece in the bayonet of the multiple chuck, described two ripple pearls point Not Wei Yu the U-shaped latch hook inside two sides and be held on the locked body, described two ripple pearls with the U-shaped latch hook Occlusion.

When hanging coded lock locking, the fork of the locked body as described in the buckle simultaneously misalignment of the chuck Piece, therefore when stirring the U-shaped latch hook, occlusion of the U-shaped latch hook by described two ripple pearls cannot take off from the shell Out.When needing to open the hanging coded lock, rotate the multiple letter disk wheel to correct position, at this time the multiple chuck Bayonet be directed at corresponding forks piece, stir the U-shaped latch hook, the U-shaped latch hook can make described in described two beads squeeze Latch hook body is mobile so that the multiple forks piece enters in the multiple bayonet, at this time described two ripple pearls can move with U-shaped latch hook is allowed to deviate from the shell, to open the hanging coded lock.When needing Modify password, in the hanging password The state that lock is opened rotates the U-shaped latch hook, such as rotate when one end of that is, described U-shaped latch hook is deviate from from the shell 180 degree, to drive the arrived tableting to rotate so that the relief portion of the arrived tableting is towards the locked body；Then the U is pressed Shape latch hook so that the relief portion of the arrived tableting is directed at the end of the rotation axis, then rotates the U-shaped latch hook, such as rotate 90 degree etc., so that the pressure section of the arrived tableting presses on the end of the rotation axis, the rotation axis is because being compressed at this time And the multiple chuck is driven to be detached from the multiple letter disk wheel, i.e., rotatable the multiple letter disk wheel is to be arranged new password.When After new password is set, then the U-shaped latch hook is rotated to discharge the rotation axis, so that rotation axis drive is described more A chuck return lays equal stress on neocaine on the multiple letter disk wheel.Since the hanging coded lock of the utility model is in Modify password When, without specifically changing cipher key, so that the operation of the Modify password of the hanging coded lock is more convenient.

For example, setting the multiple letter disk wheel for the ease of card, the side of the chuck is convexly equipped with multiple fixture blocks 3122, institute It states and is recessed with multiple card holes 321 on the inside of letter disk wheel, the multiple fixture block is laterally arranged in the multiple of the letter disk wheel respectively In card hole, so that the letter disk wheel can be rotated together with the chuck.The arrived tableting is to be convexly equipped in the U-shaped latch hook On D-shaped sheet body, be formed with evacuation plane in the relief portion, be formed on the pressure section and compress convex surface.One wherein In embodiment, the U-shaped latch hook includes the connecting rod 22 being oppositely arranged and latch hook bar 23, and the length of the connecting rod is greater than described The length of latch hook bar, the arrived tableting are convexly equipped in the periphery of the connecting rod.By in multiple fixture blocks are arranged on the chuck, from And the chuck is mutually clamped with the multiple letter disk wheel.And the evacuation plane can then allow the connecting rod to be moved The arrived tableting is driven to arrive at the end of the rotation axis when dynamic, the convex surface that compresses then can be under the drive of the connecting rod It rotates and presses in the rotation axis, so that the rotation axis is mobile.

For example, for the ease of being engaged the connecting rod and the latch hook bar, equal shape in the connecting rod and the latch hook bar At there is occlusion hole 221 and 231, described two occlusion holes are oppositely arranged, and described two ripple pearls are respectively accommodated in described two occlusions In hole, the connecting rod is vertical with the rotation axis.It is convexly equipped with baffle 222 in the connecting rod in one of the embodiments, The baffle is spaced apart from each other with the arrived tableting, and pressure spring 223, the opposite end point of the pressure spring are also arranged in the connecting rod It is not held on the shell and the baffle.It is formed in the shell in one of the embodiments, and supports slot 12, it is described Connecting rod supports in slot described in being arranged in, and the pressure spring is between the baffle and the arrived tableting, and the pressure spring is far from institute The one end for stating baffle is held in the bottom for supporting slot.The locked body further includes ontology in one of the embodiments, 412, the multiple forks piece convexedly stretches on the ontology, and the opposite sides of the ontology, which is respectively formed with, supports shoulder 4121, described Two ripple pearls are held in described two support on shoulder respectively.Installing slot is offered in the ontology in one of the embodiments, 413, the elastic component is contained in the installing slot, and the opposite end of the elastic component is held in the installing slot respectively On side wall and the shell.It is engaged hole since the connecting rod has been respectively formed on the latch hook bar, can be accommodated described Two ripple pearls deviate from the shell to place the connecting rod and the latch hook bar.And when the forks piece is directed at the chuck When bayonet, the ripple pearl can squeeze the locked body movement, can then discharge the connecting rod and the latch hook bar.Example Such as, the connecting rod automatically falls off and compresses the rotation axis in order to prevent, to mistakenly change password, the pressure spring can The baffle is compressed, so that the connecting rod drives the arrived tableting far from the rotation axis, to avoid because of maloperation Cause the modification of password, only when user firmly presses the U-shaped latch hook could Modify password, thus ensure that modify it is close The safety of code.

For example, the hanging coded lock further includes mutually matched undertaking shell for the ease of repairing the hanging coded lock 51 set shell 52 with lid, and the undertakings shell and the lid set shell and be set in the shell, the undertakings shell with it is described cover set shell it Between be formed with installing space, the latch components and the code component are contained in the installing space, and the lid is set on shell It is additionally provided with bonding jumper 53, multiple elastic bonding jumpers 531 are convexly equipped on the bonding jumper, the multiple elasticity bonding jumper is lived respectively It is pressed on the multiple letter disk wheel dynamicly.It is set on shell for example, the bonding jumper is screwed in the lid.The lid is set Shell and the undertaking shell are alloy component, and are fixed together by hexagon socket head cap screw.For example, all emargination of the letter disk wheel Equipped with multiple bar shaped locating slots 322, the elasticity bonding jumper is actively held in the bar shaped locating slot.Rotate the letter disk When wheel, the letter disk wheel can be mobile relative to the elastic bonding jumper, so that the letter disk wheel can be moved to another In bar shaped locating slot, to generate the sound of " rattling away " and realize the effect temporarily positioned, the sense of touch of the letter disk wheel is improved.Example Such as, for pressure tank is formed on the undertaking shell, for pressure tank is corresponding with the installing slot of the locked body to be communicated, the elastic component Opposite end be held in respectively for pressure tank side wall and it is described installing slot side wall on, i.e., one section of the described elastic component supports It is held on the side wall of for pressure tank, the other end of the elastic component presses on the side wall of the installing slot.Due to the extension Formula coded lock uses the undertaking shell being mutually spirally connected and lid sets shell, therefore can expose the locked body by turning screw, from And facilitate the maintenance of the hanging coded lock, and the punching press in installation process can be reduced.

For example, the hanging coded lock further includes water repellent component 60, and the water repellent component includes in order to improve waterproof effect Waterproof pad 61 and marine glue lid 62, the waterproof pad are set to the inside top of the shell, and the U-shaped latch hook is arranged in In the waterproof pad, the marine glue lid is rotatably arranged in the bottom of the shell and gear sets the multiple letter disk wheel, institute It states marine glue and covers and offer apopore 621.For example, the rotation axis is provided with far from one end of the arrived tableting compresses spring 313, for pushing against the rotation axis, so that the rotation axis is close to the connecting rod.The waterproof pad can prevent moisture Into the hanging coded lock, the marine glue lid can then allow the moisture come into the hanging coded lock to flow out, into And the waterproof performance of the hanging coded lock is improved, facilitate the hanging coded lock to use outdoors, to play rainproof effect.

For example, the hanging coded lock is password brass warehouse padlock.For example, this lock has 4 password letter disk (i.e. letter disks Wheel), letter disk is interior to be equipped with rotor (i.e. chuck), and a tenths is open and (buckles) rotor wherein, when the password of setting is correct When, opening is to positive forks piece, and when pulling lock hook (i.e. latch hook) at this time, ripple pearl will push forks piece insertion rotor, and lock hook can be pulled out normally. When password bad, since forks piece cannot be inserted into rotor, ripple pearl cannot be fully retracted lock body, and lock hook cannot pull out, and realize lock The firmly function of lock hook.

The common sesame lock in market is compared, the cipher hang lock Modify password operation of the utility model is not required to close with specifically changing Spoon, changing Password Operations is: after lock hook pulls out, turning to 180 degree position, presses lock hook downwards, until cannot press, has at this time obvious The feeling that spring bounces, then return back to 90 degree of positions；It keeps lock hook in the state pressed, rotates letter disk, set new password, then pine It unlocks and hooks, so far password is successfully modified.

The common sesame lock in market is compared, since such sesame lock is not required to special key Modify password, only in lock hook Design changes cryptography architecture, so padlock need to be prevented in unlocking condition, and lock hook accidentally presses lock hook at 180 degree position, leads Fine and close code modification, so, anti-drop is increased in lock body, that is, increases lock hook catapult (i.e. pressure spring) and lock hook baffle (i.e. Baffle)；This structure will not influence the running of lock hook when sesame locks normal use, be intended merely to prevent lock hook in Gravitative Loads Under fall to the position of Modify password and be arranged.

Compare the common sesame lock in market, the liner of such sesame lock is using 2 alloy components (i.e. lid sets shell and accepts shell) It constituting, is fastened with a hexagon socket head cap screw, the benefit done so is when with whole lock is installed, reduction punching press, the processes such as nest conjunction, The possibility of maintenance renewal part is also increased simultaneously.Letter disk push shrapnel (i.e. bonding jumper) adopt and be screwed, but also installation With it is easy to maintenance.There are two sheet rubber (i.e. waterproof pads and marine glue lid) for locking face and the design of lock bottom, while opening in liner at the bottom If aperture (i.e. apopore), this two are designed so that lock body is outdoors in use, can better rain-proof.

For example, this lock is equipped with 4 password letter disks, 4 passwords are respectively corresponded；It, can be by pulling or pressing when password is correct Lock operation is opened and closed in lock hook；This lock open locking, which is both needed to password, could correctly operate；After lock hook locking, random password, Ji Kesuo are dialled Firmly lock hook realizes blocking function.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed Carefully, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the general of this field For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all Belong to the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of hanging coded lock, which is characterized in that including shell, U-shaped latch hook, code component and latch components；

The both ends of the U-shaped latch hook are actively inserted in the shell, and one end of the latch hook is provided with arrived tableting, described The relief portion being oppositely arranged and pressure section are formed in arrived tableting；

The code component is contained in the shell, and the code component includes rotor and multiple letter disk wheels, the rotation Body includes rotation axis and multiple chucks, and one end of the rotation axis is adjacent to the arrived tableting, and the multiple chuck is spaced reciprocally It is fixed in the rotation axis, the periphery of the chuck is recessed with bayonet, and the multiple letter disk wheel is sheathed on the rotation axis On, the multiple letter disk wheel is actively arranged in the side of the multiple chuck respectively；

The latch components include locked body, elastic component and two ripple pearls, are convexly equipped with multiple forks piece on the locked body, described Elastic component is held on the locked body and is respectively clamped into the multiple forks piece in the bayonet of the multiple chuck, described two Ripple pearl is located at the inside two sides of the U-shaped latch hook and is held on the locked body, described two ripple pearls with the U The occlusion of shape latch hook.

2. hanging coded lock according to claim 1, which is characterized in that the arrived tableting is to be convexly equipped in the U-shaped latch hook On D-shaped sheet body, be formed with evacuation plane in the relief portion, be formed on the pressure section and compress convex surface.

3. hanging coded lock according to claim 1, which is characterized in that the U-shaped latch hook includes the connection being oppositely arranged Bar and latch hook bar, the length of the connecting rod are greater than the length of the latch hook bar, and the arrived tableting is convexly equipped in the connecting rod Periphery.

4. hanging coded lock according to claim 3, which is characterized in that the connecting rod is respectively formed on the latch hook bar There is occlusion to cheat, described two occlusion holes are oppositely arranged, and described two ripple pearls are respectively accommodated in described two occlusion holes, the company Extension bar is vertical with the rotation axis.

5. hanging coded lock according to claim 3, which is characterized in that be convexly equipped with baffle, the gear in the connecting rod Piece is spaced apart from each other with the arrived tableting, and pressure spring is also arranged in the connecting rod, and the opposite end of the pressure spring is held in respectively On the shell and the baffle.

6. hanging coded lock according to claim 5, which is characterized in that it is formed in the shell and supports slot, the company Extension bar supports in slot described in being arranged in, and the pressure spring is between the baffle and the arrived tableting, and the pressure spring is far from described One end of baffle is held in the bottom for supporting slot.

7. hanging coded lock according to claim 1, which is characterized in that the locked body further includes ontology, the multiple Forks piece convexedly stretches on the ontology, and the opposite sides of the ontology, which is respectively formed with, supports shoulder, and described two ripple pearls support respectively It is supported on shoulder in described two.

8. hanging coded lock according to claim 7, which is characterized in that offer installing slot, the bullet in the ontology Property part be contained in the installing slot, and the opposite end of the elastic component be held in respectively it is described installing slot side wall with it is described On shell.

9. hanging coded lock according to claim 1, which is characterized in that it further include water repellent component, the water repellent component packet Waterproof pad and marine glue lid are included, the waterproof pad is set to the inside top of the shell, and the U-shaped latch hook is arranged in institute It states in waterproof pad, the marine glue lid is rotatably arranged in the bottom of the shell and gear sets the multiple letter disk wheel, described Marine glue, which covers, offers apopore.

10. hanging coded lock according to claim 1, which is characterized in that further include that mutually matched undertaking shell is set with lid Shell, the undertaking shell and the lid set shell and are set in the shell, and the undertaking shell and the lid set and be formed with dress between shell If space, the latch components and the code component are contained in the installing space, and the lid, which sets to be additionally provided on shell, to be taken Contact pin, multiple elastic bonding jumpers are convexly equipped on the bonding jumper, and the multiple elasticity bonding jumper actively presses on described respectively On multiple letter disk wheels.