CN207436705U

CN207436705U - A kind of key

Info

Publication number: CN207436705U
Application number: CN201721209531.7U
Authority: CN
Inventors: 王娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2018-06-01
Anticipated expiration: 2027-09-20

Abstract

The utility model discloses a kind of key, key body includes housing, key piece and driving device；One end of housing is provided with a sealing plate, and an annular through groove is provided in the middle part of sealing plate, and housing exterior walls are provided with to solve the groove body of lock pin internal lock piece component；Key piece includes two for solving the solution locking plate and a connecting portion being connected between two solution locking plates of lock pin, and solution locking plate is mounted on the outer wall side of the housing, and solution locking plate can be unfolded to both sides under the promotion of driving device and solve the hoodle component in lock pin.The key of the utility model is a kind of high lock of anti-theft performance of cooperation and designs, the leading portion of the anti-theft lock core is provided with locking plate component, back segment is provided with hoodle component, pillar is also devised in the cavity of its posterior segment, the pillar can prevent unlocking tool from protruding fully into the cavity of back segment, it so as to which instrument can not stir hoodle component all in back segment, therefore can effectively prevent technology unlocking, substantially increase anti-theft performance.

Description

A kind of key

Technical field

The utility model is related to key fields.

Background technology

In the anti-theft door lock cylinder used on the market substantially point three-level, i.e. A grades, B grades, B grades super (also known as C grades).According to《State Family's mechanical lock standard》Anti-theft door lock cylinder has two rank of A and B, and super B grades is in addition B grades of strengthening version that enterpriser develops.

A grades of locks：A grades of key of anti-theft lock mainly have a word key and cross key on the market at present.A grades of lock core internal structures It is very simple, the variation of pellet is only limitted to, bullet groove is few and shallow.In the anti-1 minute technical unlocking time, mutual opening rate is high.Bullet Minor structure is single-row billiard or cross lock.

B grades of locks：B grades of lock keys are flat key, there is double-row marble slot, are that key face is more with the A grades of different places of lock One row having many bends or curves irregular lines.Lock core main Types are 3 kinds, the double lock core of computer, double crescent moon lock core, two-sided leaf Piece lock core.In the anti-5 minutes technical unlocking time, mutual opening rate is high.It, can be with opening lock master in 1 minute by turning round instrument by force.

Super B grades of lock (C grades)：Key shape is groove milling or outer groove milling key in single side blade, and lock core type is side column lock core； It detects 270 minutes through the Ministry of Public Security and is opened without law technology, region mutual opening rate is zero (1,600 a ten thousandth).Billiards structure is double Row's blade adds V-type side column locking；If turning round instrument opening lock master with strong, lock core internal sabotage, self-destruction is locked, leads to not out It opens.

But no matter A grades of locks, B grades of locks or highest C grades of anti-theft are locked, since unlocking tool is likely to protrude fully into In the key slot of lock core, therefore all there is a possibility that be opened by technology, simply the problem of time length.

Utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, the lock for coordinating a kind of anti-theft performance high provide a kind of key Spoon.

The purpose of this utility model is achieved through the following technical solutions：A kind of key, including the shank of the key and and key The shank of the key is fixed and is used to solve the key body of lock pin, and the key body includes housing, key piece and driving device；

The housing is the hollow cylinder that cross section is square, and housing is provided with an envelope compared with one end of the shank of the key Plate is provided with an annular through groove in the middle part of the sealing plate, and housing exterior walls are provided with to solve the groove body of lock pin internal lock piece component, should Groove body includes interconnected straight trough and crank slot, wherein, crank slot is located on the housing and is located at close to the one side of the shank of the key, straight trough One side away from the shank of the key on housing, and the end set of straight trough has targeting port；

The key piece is two, is separately positioned on the one pair of which face of the housing, and each key piece includes two For solving the solution locking plate of lock pin and a connecting portion being connected between two solution locking plates；

The solution locking plate is mounted on the outer wall side of the housing, and the outer wall for solving locking plate is provided with to solve bullet in lock pin The eyelet of pearl component；The corresponding unlock piece is provided in the outer wall of the housing for storing the groove of solution locking plate, the groove Depth is not less than the thickness of solution locking plate；

The connecting portion is U-shaped structure, and the open end of U-shaped structure is fixedly connected respectively with two solution locking plates, blind end Then in the inner cavity of the housing；Connecting portion in inner cavity is provided with inclined-plane A, and inner cavity in the one side towards the sealing plate In connecting portion key flat spring is provided between the inner wall of the place of being folded to of U-shaped structure and the housing, the key flat spring The inner wall that connecting portion is folded to place is held out against in compressive state one end, the other end holds out against the inner wall of housing；

The driving device is arranged in the inner cavity of the housing, which includes driving end, connecting rod, pressure Plate and main spring；

The driving end is between the sealing plate and the connecting portion, and driving end is close to the one of connecting portion Side is provided with the inclined-plane B to match with the inclined-plane A；When end is driven to push connecting portion, inclined-plane B can promote inclined-plane A outside Side is mobile and compresses the key flat spring, and then the solution locking plate is driven to be moved to the outside of the housing；

Described connecting rod one end is fixedly connected with the driving end, and the other end is fixedly connected with the pressing plate；

The pressing plate and the fixed one side of connecting rod pass through the baffle limiting that is arranged in the housing cavity；

The main spring holds out against the one side for deviating from connecting rod in the pressing plate in compressive state one end, and the other end is held out against In the supporting block of the shell end.

Further, positioned at the both ends of the key flat spring, place and institute are folded in the connecting portion U-shaped structure respectively The inner wall for stating housing is each provided with a boss A, and boss A is for the fixed key flat spring and to the key piece Mobile /V.

Further, positioned at the both ends of the main spring, one is each provided on the pressing plate and the supporting block respectively The mobile /V of boss B, boss B for the fixed main spring and to the pressing plate.Since pressing plate is to pass through connection Bar and driving end are relatively-stationary, therefore the movement of the /V pressing plate just /V movement of driving end.

The beneficial effects of the utility model are：The key of the utility model is a kind of high lock of anti-theft performance of cooperation and sets Meter, the leading portion of the anti-theft lock core is provided with locking plate component, and the back segment of lock core is provided with hoodle component, the cavity of posterior segment Pillar is inside also devised with, which can prevent unlocking tool from protruding fully into the cavity of back segment, after can not being stirred so as to instrument All hoodle components in section, therefore can effectively prevent technology unlocking, substantially increase anti-theft performance；And the key of the utility model Spoon, when being inserted into the lock core of the theftproof lock, on the one hand, the crank slot of housing exterior walls can solve the locking plate component of lock pin leading portion, separately On the one hand, the driving end of driving device under the action of pillar, can be moved at the connecting portion of key piece in theftproof lock, and lead to Crossing inclined-plane B promotes key piece to be displaced outwardly, and then solves hoodle component all in lock pin back segment, is finally completed the solution of theftproof lock Lock.

Description of the drawings

Fig. 1 is the structure diagram of theftproof lock in the utility model, wherein, locking plate component and hoodle component are in locking State；

Fig. 2 is the sectional view of A-A in Fig. 1, wherein, locking plate is in the unlocked state；

Fig. 3 is schematic diagram when locking plate is in the lock state in Fig. 2；

Fig. 4 is schematic diagram when locking plate component and hoodle component are in released state in Fig. 1；

Fig. 5 is the schematic diagram of locking plate and locking plate spring；

Fig. 6 is the structure diagram of key in the utility model；

Fig. 7 is the B direction views of Fig. 6（The shank of the key is not shown）；

Fig. 8 is the enlarged drawing near key piece connecting portion in Fig. 6；

Fig. 9 eliminates the schematic diagram after key flat spring in Fig. 8 to clearly show that boss A；

Figure 10 is the enlarged drawing near the pressing plate and supporting block of driving device in Fig. 6, wherein in order to clearly show that boss B, Eliminate main spring；

Figure 11 be Fig. 6 in key piece move outward after schematic diagram, i.e., key piece unlock anti-theft lock core in hoodle Schematic diagram during component；

The C direction views of Figure 12 Figure 11（The shank of the key is not shown）；

Figure 13 is the outline drawing of Fig. 6；

Figure 14 is the D direction views of Figure 13；

In figure：

1- lock core shells, 11- locking plate limiting slots, 12- ball races；

2- lock cores, the first cavitys of 21-, the second cavitys of 22-, 23- pillars, 24- locking plate slots, 25- ball races；

3- locking plate components, 31- locking plates, 311- key slots, 312- protrusions, 32- locking plate springs；

4- hoodle components, the upper hoodles of 41-, 42- lower pellets, 43- hoodle springs；

5- the shank of the keys；

6- key bodies；

61- housings, 611- sealing plates, 6111- annular through groove, 612- groove bodies, 613- grooves, 614- inner cavities, 615- baffles, 616- supporting blocks, 6161- boss B, 617- boss A；

6121- straight troughs, 6122- crank slots, 6123- targeting ports；

62- key pieces, 621- solution locking plates, 6211- eyelets, 622- connecting portions, 6221- inclined-planes A, 6222- boss A, 623- Key flat spring；

63- driving devices, 631- drivings end, 6311- inclined-planes B, 632- connecting rod, 633- pressing plates, 6331- boss B, 634- main springs.

Specific embodiment

The technical solution of the utility model, but the scope of protection of the utility model are described in further detail below in conjunction with the accompanying drawings It is not limited to as described below.

It is the theftproof lock of the utility model below：

As Figure 1-Figure 5, a kind of theftproof lock of the utility model, and can phase including lock core shell 1 and in the lock core shell 1 The lock core 2 rotated for lock core shell 1.

The lock core 2 divides for lock core leading portion and lock core back segment, and the inside of lock core leading portion has first that section is square There is one end closing, the other end to be also square with the section that first cavity 21 connects for cavity 21, the inside of lock core back segment Second cavity 22, wherein, the width of the second cavity 22 is more than the width of the first cavity 21；One end that second cavity 22 is closed It is provided with the pillar 23 in circular ring shape towards the section of 21 protrusion of the first cavity.

In addition, the theftproof lock further includes at least two groups of locking plate components 3 and at least two groups of hoodle components 4, the lock Piece component 3 and hoodle component 4 have lock-out state and released state.Wherein, under lock-out state, lock core 2 is compared with 1 nothing of lock core shell Method rotates；Under released state, lock core 2 is rotatable compared with lock core shell 1.

The locking plate component 3 includes locking plate 31 and locking plate spring 32.The middle part of the locking plate 31 has to be inserted into key The key slot 311 of spoon, the one pair of which side of key slot 311 are each provided with a protrusion 312, and the locking plate 31 passes through locking plate bullet Spring 32 is moveably mounted in the locking plate slot 24 of lock core leading portion, the direction of the locking plate slot 24 and the axis of first cavity 21 It is perpendicular；One end of the locking plate spring 32 is fixed on the locking plate 31, and it is attached that the other end is fixed on the locking plate slot 24 Closely.As shown in figures 1 and 3, the locking plate 31 is protruded in lock-out state compared with the locking plate slot 24 at least partially And enter in the locking plate limiting slot 11 on lock core shell 1, the structure of the locking plate limiting slot 11 can limit the locking plate 31 of entrance It is rotated compared with lock core shell 1.As shown in Figure 2 and Figure 4, the locking plate 31 is in released state, positioned at the locking plate slot 24 Interior and both sides are compared with the not evagination of locking plate slot 24.

The hoodle component 4 is arranged on the both sides of second cavity 22, and hoodle component 4 includes the upper bullet set gradually Pearl 41, lower pellet 42 and hoodle spring 43 coordinate the hoodle component 4 to be provided with to receive on the lock core shell 1 and lock core 2 Hold the ball race 12,25 of hoodle component 4.The hoodle component 4 is in lock-out state, as shown in Figure 1, lower pellet 42 is stuck in lock Between core shell 1 and lock core 2, rotation of the lock core 2 compared with lock core shell 1 can be limited.The hoodle component 4 in released state, As shown in figure 4, the contact surface of upper hoodle 41 and lower pellet 42 just coincides with lock core 2 and the contact surface of lock core shell 1, at this point, Lock core 2 is rotatable compared with lock core shell 1.

Further, the hoodle component 4 acts on face on the key（The face of perforation 6211 is set on the key）With The protrusion 312 of the locking plate acts on face on the key（The face of crank slot 6211 is provided on the key）It is mutually perpendicular to.

Further, the height of the pillar 23 is the 1/3-2/3 of 22 depth of the second cavity, i.e. in Fig. 1,1/3 × H1≤ H2≤2/3 × H1 is preferably 1/2 or so.

Further, the width of second cavity 22 is 1.2-1.8 times of 21 width of the first cavity, i.e. in Fig. 1,1.2 × D1≤D2≤1.8 × D1 are preferably 1.3-1.5 times.

The theftproof lock of the utility model is respectively arranged with locking plate component 3 and hoodle component 4 in lock core leading portion and lock core back segment, Pillar 23 is also devised in the cavity of its posterior segment, which can prevent unlocking tool from protruding fully into the cavity of back segment, So as to which unlocking tool is hindered to stir the hoodle component 4 near protrusion 23, i.e. unlocking tool can not stir all hoodle groups Part 4, therefore so-called technology unlocking can be effectively prevented；Furthermore since the width D 2 of the second cavity 22 is more than the first cavity 21 width Ds 1, therefore, compared with 21 retraction of the first cavity, a distance, key are entered hoodle component 4 by the first cavity 21 After second cavity 22, it is necessary to hoodle component 4 could be unlocked to both sides expansion, so as to equally also increase the difficulty of technology unlocking. Only meet the obstruction that can overcome pillar 23 simultaneously and can be unfolded to both sides, and unlock lock sheet groups part 3 and hoodle can also be corresponded to After component 4, the theftproof lock of unlock the utility model is possible to.

The key designed below for the utility model for above-mentioned theftproof lock：

As shown in Fig. 6-Figure 14, the key of the utility model is fixed including the shank of the key 5 and with the shank of the key 5 and for unlocking The key body 6 of above-mentioned lock core, the key body 6 include housing 61, key piece 62 and driving device 63.

The housing 61 is the hollow cylinder that cross section is square, and the size of housing 61 is big with first cavity 21 Small to match, the length of housing 61 is suitable plus the depth of the second cavity 22 with first cavity 21, and housing 61 is compared with key One end of the shank of the key 5 is provided with a sealing plate 611, and the middle part of the sealing plate 611 is provided with an annular through groove 6111, the annular through groove 6111 It corresponds to the pillar 23 of above-mentioned theftproof lock and designs, the pillar 23 can be allowed to extend there through.61 outer wall of housing is provided with to unlock The groove body 612 of locking plate component 3 in above-mentioned lock core 2, the groove body 612 include interconnected straight trough 6121 and crank slot 6122, wherein, Crank slot 6122 is located at close to the one side of the shank of the key 5 on the housing 61, and straight trough 6121 is located at one away from the shank of the key 5 on housing 61 Side, and the end set of straight trough 6121 has targeting port 6123, wherein, the first cavity 21 that crank slot 6122 corresponds to theftproof lock is set, The position of the trend and protrusion 312 on each locking plate 3 of 6122 flute profile of crank slot is corresponding；Since the locking plate 3 of above-mentioned theftproof lock can It horizontally slips in locking plate slot 24, therefore, when being inserted into the lock core leading portion of above-mentioned theftproof lock, targeting port 6123 can will be locked key The protrusion 312 of piece 31 is introduced in straight trough 6121, and during key is further inserted into, protrusion 312 can be along straight trough 6121 Slip into crank slot 6122, finally by the trend of 6122 flute profile of crank slot drive locking plate 31 all close in locking plate slot 24 and both sides compared with The not evagination of locking plate slot 24, so as to unlock locking plate component 3.

The key piece 62 is two, is separately positioned on housing 61 and on the opposite different from setting groove body 612, Key piece 62 includes two for solving the solution locking plate 621 and a connecting portion being connected between two solution locking plates 621 of lock pin 622。

The solution locking plate 621 is mounted on the outer wall side of the housing 61, and the outer wall of solution locking plate 621 is provided with to unlock The eyelet 6211 of hoodle component 4 in above-mentioned lock core, the eyelet 6211 correspond to the position of above-mentioned hoodle component 4 and design；It is right Locking plate 621 should be solved, is provided in the outer wall of the housing 61 for storing the groove 613 of solution locking plate 621, the groove 613 Depth is not less than the thickness of the thickness, preferably about equal to solution locking plate 621 of solution locking plate 621.

The connecting portion 622 is U-shaped structure, and the open end of U-shaped structure is fixedly connected respectively with two solution locking plates 621, Blind end is then in the inner cavity 614 of the housing 61；Connecting portion 622 in inner cavity 614 is in the one side towards the sealing plate 611 Be provided with inclined-plane A6221, and the connecting portion 622 in inner cavity 614 U-shaped structure the inner wall for being folded to place and the housing 61 it Between be provided with key flat spring 623, which holds out against the inner wall that connecting portion 622 is folded to place in compressive state one end, The other end holds out against the inner wall of housing 61.

The driving device 63 is arranged in the inner cavity 614 of the housing 61, which includes driving end 631st, connecting rod 632, pressing plate 633 and main spring 634.

Between the sealing plate 611 and the connecting portion 622, driving end 631 is leaned on for the driving end 631 The one side of nearly connecting portion 622 is provided with the inclined-plane B 6311 to match with the inclined-plane A 6221；Connect when driving end 631 pushes During socket part 622, inclined-plane B 6311 can promote inclined-plane A 6221 to move outward and compress the key flat spring 623, and then The solution locking plate 621 is driven to be stretched out from groove 613 and moved to the outside of housing 61.

Described 632 one end of connecting rod is fixedly connected with the driving end 631, the other end and the pressing plate 633 It is fixedly connected.

The pressing plate 633 and 632 fixed one side of connecting rod pass through the baffle that is arranged in 61 inner cavity 614 of housing 615 /Vs, but the baffle 615 is not necessary, can be by 611 /V of sealing plate, i.e., in the case of no baffle 615 /V drives the distalmost end of end 631.

The main spring 634 holds out against the one side for deviating from connecting rod 632 in the pressing plate 633 in compressive state one end, separately One end is held out against in the supporting block 616 of 61 end of housing.

Specifically, as shown in Figure 8 and Figure 9, positioned at the both ends of the key flat spring 623, respectively in the connecting portion 622 The inner wall of the place of being folded to of U-shaped structure and the housing 61 is each provided with a boss A 617,6222, and boss A 617,6222 is used In the key flat spring 623 described in fixation and the mobile /V to the key piece 62, i.e., as two boss A 617,6222 During collision, key piece 62 just cannot be displaced outwardly again.In addition, positioned at the both ends of the main spring 634, respectively in the pressing plate 633 and the supporting block 616 on be each provided with a boss B 6331,6161, boss B 6331,6161 is for fixed described Main spring 634 and the mobile /V to the pressing plate 633, similarly, when two boss B 6331,6161 bump against, pressing plate 633 Just cannot move still further below.It is moved outward it should be noted that above-mentioned boss A and boss B is mainly used for limitation key piece 62 Maximum range, but it is not necessary, can also be to key piece 62 in the case of only boss A or only boss B Maximum moving distance limited, even if in addition, both there is no boss A and also without boss B in the case of, can also pass through The wall surface of the second cavity of theftproof lock 22 limits the maximum moving distance of key piece 62, i.e., key piece 62 touches the second chamber The wall surface of body 22, key piece 62 just cannot be displaced outwardly again.

On the theftproof lock of the utility model and the principle of key：

First, in its natural state, as shown in Figure 1, the lock core 2 of theftproof lock be by locking plate component 3 and hoodle component 4 simultaneously Locking, lock core 2 is not rotatable.Key under natural conditions then as shown in fig. 6, key piece 62 key flat spring 623 work It is contained under in groove 613；End 631 is driven under the action of main spring 634, on the inner wall for acting against sealing plate 611.

When the first cavity 21 of key insertion theftproof lock, the protrusion 312 of locking plate 31 can be introduced straight trough by targeting port 6123 In 6121, and during key is further inserted into, locking plate 31 can slip into crank slot by protrusion 312 along straight trough 6121 6122, finally, since the flute profile of the crank slot 6122 of design is adapted with the distribution of protrusion 312 on locking plate 31, therefore crank slot 6122 can drive locking plate 31 to move and all close in locking plate slot 24 and both sides are compared with the not evagination of locking plate slot 24, so as to unlock Locking plate component 3；Meanwhile key, after the second cavity 22 is entered, pillar 23 can enter the annular through groove 6111 on sealing plate 611 It is interior, and the lower top driving end 631 with being further inserted into for key, when driving end 631 is moved to the connection of key piece 622 When at portion 622, inclined-plane B 6311 can promote solution locking plate 621 to be stretched out from groove 613 and to outside housing 61 by inclined-plane A 6221 Side is moved, finally, since the distribution of eyelet 6211 and the distribution of hoodle component 4 in the second cavity of theftproof lock 22 on solution locking plate 621 Match, therefore hoodle component 4 can be pushed to the position unlocked just by eyelet 6211, i.e., all upper hoodles 41 all can It shrinks back to the line of demarcation for making upper lower pellet 41,42（That is contact surface）Just with the line of demarcation of lock core 2 and lock core shell 1（That is contact surface） The position to coincide.Locking plate component 3 and hoodle component 4 are unlocked as a result, and lock core 2 can be rotated compared with lock core shell 1, complete Into the releasing process of entire theftproof lock.

Claims

1. a kind of key, including the shank of the key（5）With with the shank of the key（5）It fixes and is used to solve the key body of lock pin（6）, feature It is：The key body（6）Including housing（61）, key piece（62）And driving device（63）；

The housing（61）For the hollow cylinder that cross section is square, housing（61）Compared with the shank of the key（5）One end set There is a sealing plate（611）, the sealing plate（611）Middle part be provided with an annular through groove（6111）, housing（61）Outer wall, which is provided with, to be used for Solve the groove body of lock pin internal lock piece component（612）, the groove body（612）Including interconnected straight trough（6121）And crank slot （6122）, wherein, crank slot（6122）Positioned at the housing（61）Upper close the shank of the key（5）One side, straight trough（6121）Positioned at shell Body（61）Upper separate the shank of the key（5）One side, and straight trough（6121）End set have targeting port（6123）；

The key piece（62）For two, the housing is separately positioned on（61）One pair of which face on, each key piece（62） The solution locking plate for being used to solve lock pin including two（621）Two solution locking plates are connected to one（621）Between connecting portion（622）；

The solution locking plate（621）Mounted on the housing（61）Outer wall side, solve locking plate（621）Outer wall be provided with to solve The eyelet of hoodle component in lock pin（6211）；The corresponding unlock piece（621）, in the housing（61）Outer wall be provided with and be used for Storage solution locking plate（621）Groove（613）, the groove（613）Depth not less than solution locking plate（621）Thickness；

The connecting portion（622）For U-shaped structure, the open end of U-shaped structure solves locking plates with two respectively（621）It is fixedly connected, Blind end is then located at the housing（61）Inner cavity（614）In；Inner cavity（614）In connecting portion（622）Towards the sealing plate （611）One side be provided with inclined-plane A（6221）, and inner cavity（614）In connecting portion（622）U-shaped structure be folded to place with The housing（61）Inner wall between be provided with key flat spring（623）, the key flat spring (623) is in compressive state one end top It is close to socket part（622）The inner wall at place is folded to, the other end holds out against housing（61）Inner wall；

The driving device（63）It is arranged on the housing（61）Inner cavity（614）In, the driving device（63）Including driving End（631）, connecting rod（632）, pressing plate（633）And main spring（634）；

The driving end（631）Positioned at the sealing plate（611）With the connecting portion（622）Between, drive end （631）Close to connecting portion（622）One side be provided with and the inclined-plane A（6221）The inclined-plane B to match（6311）；When driving end Head（631）Push connecting portion（622）When, inclined-plane B (6311) can promote inclined-plane A（6221）It moves outward and compresses the key Key piece spring（623）, and then drive the solution locking plate（621）To the housing（61）Outside movement；

The connecting rod（632）One end and the driving end（631）It is fixedly connected, the other end and the pressing plate （633）It is fixedly connected；

The pressing plate（633）With connecting rod（632）Fixed one side is by being arranged at the housing（61）Inner cavity（614）In gear Plate（615）/V；

The main spring（634）It is held out against in compressive state one end in the pressing plate（633）Away from connecting rod（632）One side, The other end is held out against in the housing（61）The supporting block of end（616）On.

2. a kind of key according to claim 1, it is characterised in that：Positioned at the key flat spring（623）Both ends, point Not in the connecting portion（622）U-shaped structure is folded to place and the housing（61）Inner wall be each provided with a boss A（617、 6222）, boss A（617、6222）For the fixed key flat spring（623）And to the key piece（62）Shifting Dynamic /V.

3. a kind of key according to claim 1, it is characterised in that：Positioned at the main spring（634）Both ends, exist respectively The pressing plate（633）With the supporting block（616）On be each provided with a boss B（6331、6161）, boss B（6331、6161） For the fixed main spring（634）And to the pressing plate（633）Mobile /V.