CN209354885U - A kind of vacuum chuck - Google Patents

Abstract

The utility model relates to vacuum suction instrument technical fields, more particularly to a kind of vacuum chuck, including the sealing element set gradually, support base and pedestal, the support base is provided with the first groove and the first gasket, first gasket is set to the top of the support base, the bottom wall of first groove is offered for for the perforative first through hole of sealing element, the sealing element is arranged in first groove and is revealed in support base, when the side wall of the side wall at the top of the sealing element and the first groove against when, gap between the sealing element and support base reaches sealing state；The first return springs for springing back the support base are provided between the support base and pedestal, the vacuum chuck further includes the self-locking mechanism for sealing element to be lock onto pedestal.The vacuum chuck of the utility model is adsorbed equipment with vacuum suction technology, avoids the normal use that using magnet the equipment such as mobile phone, tablet computer are adsorbed and influenced with mobile phone.

Description

A kind of vacuum chuck

Technical field

The present invention relates to vacuum suction instrument technical fields, and in particular to a kind of vacuum chuck.

Background technique

Automobile has become a kind of daily vehicles of people, and people are also required to when driving using mobile phone, but It is to hold mobile phone time with hand and grown easy to be tired out and mobile phone easily to fall, is unfavorable for traffic safety, occurs branch in the market thus The inclined handset bracket of mobile phone is supportted, common handset bracket is mainly magnetic adsorption type bracket, installation inside the handset bracket of magnetic suck There is magnet, when needing fixed mobile phone, mobile phone is firmly fixed with handset bracket by the suction of magnet, then pass through mobile phone The support base of bracket itself supports mobile phone, and the handset bracket of this structure in use, inhaled using magnet by discovery Attached, magnet periphery can generate magnetic interference mobile phone signal, so that mobile phone signal is bad, it sometimes appear that being unable to normal ON Phenomena such as electricity, slower online network speed, and with the release of mobile phone wireless charge prepd, magnetic adsorption type bracket is used for a long time can shadow Ring mobile phone wireless charge function.

Summary of the invention

In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide a kind of vacuum chuck, Compared with existing magnetic adsorption type bracket, vacuum chuck of the invention is adsorbed equipment with vacuum suction technology, and avoiding makes The normal use of mobile phone is adsorbed and influenced with magnet on equipment such as mobile phone, tablet computers, while there is magnetic adsorption type branch again The convenience of frame.

The purpose of the invention is achieved by the following technical solution: a kind of vacuum chuck, including set gradually sealing element, branch Support seat and pedestal, the support base are provided with the first groove and the first gasket, and first gasket is set to the support The top of seat, the bottom wall of first groove are offered for for the perforative first through hole of sealing element, the sealing element to be arranged in First groove is simultaneously revealed in support base, when the side wall of the side wall at the top of the sealing element and the first groove against when, institute The gap stated between sealing element and support base reaches sealing state；It is provided between the support base and pedestal described for springing back First return springs of support base, the vacuum chuck further include the self-locking mechanism for sealing element to be lock onto pedestal.

Preferably, the sealing element includes the connector for being located in the base station of the first groove and connecting with base station, described Connector runs through the first through hole.

Preferably, the second return springs for springing back the sealing element, institute are provided between the base station and pedestal The second return springs are stated through the first groove and first through hole, the connector is used to limit the position of the second return springs It sets.

Preferably, the sealing element further includes the second gasket for being resisted against the bottom of base station, and second gasket holds In the first groove, second gasket is used to seal the gap between the side wall and pedestal of the first groove.

Preferably, the sealing element is provided with the first buckle of the bottom for contradicting support base.

Preferably, the side wall of the pedestal offers button hole, and the side wall of the support base is provided with for contradicting button hole Second buckle of side wall.

Preferably, the second groove is offered at the top of the support base, it is recessed that first gasket is located in described second In slot.

Preferably, the self-locking mechanism includes the hook elastic slice connecting with the sealing element and connect with the pedestal Fixing piece, the fixing piece offer the card slot for contradicting hook elastic slice.

Preferably, the hook elastic slice offers the first pin hole, and the sealing element offers the second pin hole, first pin Hole is connected to the second pin hole, the sealing element and hook elastic slice pin connection.

Preferably, the vacuum chuck further includes the reset key for contradicting hook elastic slice, and the reset key includes Hand casting die pushes away hook part, locating part and the third return springs for contradicting locating part and hand casting die, and the hook part that pushes away opens up There is third groove, the locating part is arranged in the third groove, and the groove width of the third groove is greater than the thickness of the locating part Degree, the locating part are installed in the fixing piece, and the hook part that pushes away is slidably connected to fixing piece, and the hand casting die is revealed in pedestal Side wall.

The beneficial effects of the present invention are: vacuum chuck of the invention, in use, by equipment such as mobile phone, tablet computers The back side and sealing element are against then application pressed by external force equipment, moves equipment, sealing element and support base to the direction close to pedestal Dynamic, at this point, the first return springs are compressed, sealing element is linked together by self-locking mechanism and pedestal, when external force disappears, Support base is recoiled to initial position under the action of elastic force by compressed first return springs, and sealing element is because by self-locking Mechanism links together with pedestal, does not spring back with support base, so that the first gasket top surface is higher than the top surface of sealing element, equipment First gasket of the back side and support base is against making to form cavity between equipment and sealing element, in the first gasket and sealing element Under the action of, extraneous air cannot be introduced into cavity, and then realizes and vacuumize to cavity, so that cavity forms vacuum State, so that equipment be adsorbed；Compared with existing magnetic adsorption type bracket, vacuum chuck of the invention is with vacuum suction technology Equipment is adsorbed, the normal use that using magnet the equipment such as mobile phone, tablet computer are adsorbed and influenced with mobile phone is avoided, Simultaneously again with the convenience of magnetic adsorption type bracket.

Detailed description of the invention

Fig. 1 is the schematic perspective view of original state of the present invention；

Fig. 2 is the schematic perspective view of working condition of the present invention；

Fig. 3 is decomposition texture schematic diagram of the invention；

Fig. 4 is the decomposition texture schematic diagram of pedestal and reset key of the invention.

Appended drawing reference are as follows: 1, base station；2, support base；3, pedestal；4, the first groove；5, the first gasket；6, the second sealing Pad；7, first through hole；8, the first return springs；9, the second return springs；10, connector；11, the first buckle；12, it detains Hole；13, the second buckle；14, the second groove；15, hook elastic slice；16, fixing piece；17, card slot；18, the first pin hole；19, it resets Key；191, hand casting die；192, hook part is pushed away；193, locating part；194, third return springs；20, third groove；21, it limits Slot；22, accommodation groove.

Specific embodiment

For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to examples and drawings Bright, the content that embodiment refers to not is limitation of the invention.

Embodiment 1

As shown in Figures 1 to 4, a kind of vacuum chuck, it is described including the sealing element, support base 2 and pedestal 3 set gradually Support base 2 is provided with the first groove 4 and the first gasket 5, and first gasket 5 is set to the top of the support base 2, institute The first gasket 5 is stated as annular shape, the bottom wall of first groove 4 is offered for for the perforative first through hole 7 of sealing element, institute It states sealing element to be located in first groove 4 and be revealed in support base 2, when the side wall and the first groove at the top of the sealing element 4 side wall against when, the gap between the sealing element and support base 2 reaches sealing state；The support base 2 and pedestal 3 it Between be provided with the first return springs 8 for springing back the support base 2, the vacuum chuck further includes for locking sealing element Tightly in the self-locking mechanism of pedestal 3.

In use, by the back side of the equipment such as mobile phone, tablet computer and sealing element against, then apply pressed by external force equipment, It is mobile to the direction of close pedestal 3 to make equipment, sealing element and support base 2, at this point, the first return springs 8 are compressed, sealing element It is linked together by self-locking mechanism and pedestal 3, when external force disappears, compressed first return springs 8 are in elastic force Support base 2 is recoiled into initial position under effect, sealing element by self-locking mechanism with pedestal 3 because linking together, not with support Seat 2 is sprung back, so that 5 top surface of the first gasket is higher than the top surface of sealing element, the back side of equipment and the first gasket 5 of support base 2 Against making to form cavity between equipment and sealing element, under the action of the first gasket 5 is with sealing element, extraneous air can not It into cavity, and then realizes and cavity is vacuumized, so that cavity forms vacuum state, so that equipment be adsorbed； Compared with existing magnetic adsorption type bracket, vacuum chuck of the invention is adsorbed equipment with vacuum suction technology, and avoiding makes The normal use of mobile phone is adsorbed and influenced with magnet on equipment such as mobile phone, tablet computers, while there is magnetic adsorption type branch again The convenience of frame.Wherein, the volume of the cavity is bigger, and the adsorption capacity for forming vacuum is stronger；First gasket 5 is by shore hardness C 1 ° -20 ° flexible glue be made so that vacuum chuck of the invention not only can with smooth flat suction-operated, also it is adsorbable slightly Rough plane, in addition, since the first gasket 5 is made in 1 ° -20 ° of flexible glue by shore hardness C, so that vacuum chuck absorption has When the equipment of Rough Horizontal Plane, the flexible glue and Rough Horizontal Plane are against can fill up the gap of Rough Horizontal Plane, both make to reach seal shape State avoids air from causing adsorption effect poor in inflow cavity in the gap of Rough Horizontal Plane, ensure that vacuum chuck adsorbs The adsorption capacity and stability of equipment.In the present embodiment, the original state of the vacuum chuck is that the top surface of sealing element is not less than The top surface of first gasket 5 of support base 2；Preferably, the original state of the vacuum chuck is top surface and the support of sealing element The top surface of first gasket 5 of seat 2 is in same plane.Preferably, the cross section of the vacuum chuck is generally cylindrical, ellipse Round or polygon, first return springs 8 are compressed spring, and one end of the compressed spring contradicts pedestal 3, compresses bullet The other end of spring contradicts support base 2.

The sealing element includes the connector 10 for being located in the base station 1 of the first groove and connecting with base station 1, the connection Part 10 runs through the first through hole 7.

In the operating condition, support base 2, base station 1, the first gasket 5 and mobile phone, tablet computer etc. are set the vacuum chuck Standby combination forms closed cavity, and since self-locking mechanism makes sealing element lock onto the self-locking mechanism of pedestal 3, support base 2 is sprung back In the process, sealing element is static with pedestal 3 always, and support base 2 and 3 relative motion of sealing element or pedestal avoid sealing element with branch It supports the movement of seat 2 and moves, to guarantee that the space of the cavity when support base 2 is sprung back is gradually increased, make the absorption of vacuum chuck Power is also gradually increased.In the present embodiment, the top surface of the sealing element is the top surface of the base station 1.

It is provided with the second return springs 9 for springing back the sealing element between the base station 1 and pedestal 3, described Two return springs 9 run through the first groove 4 and first through hole 7, and the connector 10 is used to limit the position of the second return springs 9 It sets.

When sealing element is locked at pedestal 3 by the self-locking mechanism, sealing element compresses the second return springs 9；When described After self-locking mechanism unlocks, the sealing element is mobile far from pedestal 3 under the resilient force of the second return springs 9, makes Sealing element recoils to initial position, not only makes vacuum chuck release device, the also reuse in favor of the vacuum chuck. In the present embodiment, second return springs 9 be compressed spring, one end of second return springs 9 with it is described close Sealing against, the other end of second return springs 9 and the pedestal 3 against.In the present embodiment, the connector of setting 10 prevent the second return springs 9 from deviating, and avoid the second return springs 9 by compression hour offset or topple over and lead to vacuum chuck Operational failure guarantees that vacuum chuck can work normally.

The sealing element further includes the second gasket 6 for being resisted against the bottom of base station 1, and second gasket 6 is located in In first groove 4, second gasket 6 is used to seal the gap between the side wall and pedestal 3 of the first groove 4.Preferably, institute The second gasket 6 is stated as annular shape.

In the present embodiment, the gap between the side wall and pedestal 3 of the first groove 4 is sealed by the second gasket 6, makes the external world Air cannot be introduced into cavity, to reach sealing effect, to realize that the vacuum state of cavity provides safeguard, improve vacuum and inhale The leakproofness and vacuum stability of disk.

The sealing element is additionally provided with the first buckle 11 of the bottom for contradicting support base 2.

After the self-locking mechanism unlocks, the sealing element is remote under the resilient force of the second return springs 9 Mobile from pedestal 3, after sealing element is moved to initial position, the first buckle 11 contradicts the bottom of support base 2, limits sealing element Shift motion, avoid disengagement of seal member support base 2, ensure that the structural stability of vacuum chuck, be conducive to the vacuum and inhale The reuse of disk.

The side wall of the pedestal 3 offers button hole 12, and the side wall of the support base 2 is provided with the side for contradicting button hole 12 Second buckle 13 of wall, second buckle 13 are movably set in button hole 12.

Apply external force compression vacuum sucker sealing element and the first gasket 5 after, no longer application external force, compressed first Return springs 8 restore to the original state and support base 2 are driven to reset, and after support base 2 resets, the second buckle 13 contradicts the side of button hole 12 Wall limits the shift motion of support base 2, avoids support base 2 from being detached from pedestal 3, is conducive to the reuse of the vacuum chuck.

The top of the support base 2 offers the second groove 14, and first gasket 5 is located in second groove 14 It is interior.

In the present embodiment, first gasket 5 is installed in second groove 14, and the side wall of the second groove 14 supports The first gasket 5 is touched, the first gasket 5 is limited, the first gasket 5 when vacuum adsorption equipment is avoided to be squeezed by ambient pressure It presses and is deformed into cavity, prevent outside air from entering in cavity and leading to vacuum failure；The second groove 14 being arranged improves institute State the leakproofness of the first gasket 5.Further, first gasket 5 is adhered to the bottom of the second groove 14 by adhesive Wall prevents first gasket 5 from falling off.

The self-locking mechanism includes the hook elastic slice 15 connecting with the sealing element and the fixation that connect with the pedestal 3 Part 16, the fixing piece 16 offer the card slot 17 for contradicting hook elastic slice 15.

When external force compresses the vacuum chuck, the first return springs 8 are compressed, and hook elastic slice 15 protrudes into card slot 17 simultaneously It mutually contradicts, sealing element is made to link together with pedestal 3, sealing element is not sprung back with support base 2, the back side of equipment and support base 2 The first gasket 5 against making to form cavity between equipment and base station 1, cooperated using hook elastic slice 15 and card slot 17, avoided close Sealing is sprung back with support base 2.In the present embodiment, the quantity of hook elastic slice 15 is two, and the quantity of fixing piece 16 is two, and Two hook elastic slices 15 are symmetrical arranged, and two fixing pieces 16 are symmetrical arranged, with only one hook elastic slice 15 of setting and a fixation Part 16 is compared, and two hook elastic slices 15 of the present embodiment cooperate with two fixing pieces 16 more stable respectively.Pedestal 3 and two fixations Limiting slot 21 is formed between part 16, one end of second return springs 9 is located in limiting slot 21, prevents the second Flexible Reset The offset of part 9 is toppled over and leads to vacuum chuck operational failure.

The hook elastic slice 15 offers the first pin hole 18, and the sealing element offers the second pin hole (unlabeled in figure), First pin hole 18 is connected to the second pin hole, the sealing element and 15 pin connection of hook elastic slice.

In the present embodiment, by pin connection, fixing compact avoids the second reset bullet for the sealing element and hook elastic slice 15 Property part 9 power it is excessive and be detached from sealing element and hook elastic slice 15, in a manner of pin connection, after hook elastic slice 15 is worn, just In dismounting and replacing hook elastic slice 15, the utilization rate of the vacuum chuck is improved.Specifically, hook elastic slice 15 has elasticity, just In hook elastic slice 15 be detached from or contradict fixing piece 16 card slot 17, and then convenient for sealing element be locked on pedestal 3 or pedestal 3 discharge Sealing element, it is preferable that the hook elastic slice 15 is made of metal material, compared with the hook elastic slice 15 made of the plastics, metal The service life of hook elastic slice 15 can be improved in hook elastic slice 15 made of material.

The vacuum chuck further includes the reset key 19 for contradicting hook elastic slice 15, and 19 activity of reset key is set It is placed in fixing piece 16, the reset key 19 includes hand casting die 191, pushes away hook part 192, locating part 193 and for contradicting limit The third return springs 194 of part 193 and hand casting die 191, the hook part 192 that pushes away offer third groove 20, the locating part 193 are arranged in the third groove 20, and the groove width of the third groove 20 is greater than the thickness of the locating part 193, the limit Part 193 is installed in the fixing piece 16, and the hook part 192 that pushes away is slidably connected to fixing piece 16, and the hand casting die 191 is revealed in base The side wall of seat 3.

It is linked together by self-locking mechanism with pedestal 3 in sealing element, and hook elastic slice 15 protrudes into card slot 17 simultaneously mutually When conflict, the hand casting die 191 of Manual press reset key 19 makes pushing away for reset key 19 hook part 192 to the center of pedestal 3 Direction is mobile, contradicts hook elastic slice 15 until pushing away and hooking part 192 and hook elastic slice 15 is detached to the card slot 17 of the fixing piece 16, Make hook elastic slice 15 and sealing element reset movement together under the resilient force of second return springs 9；Press hand casting die 191 In the process, the third return springs 194 forced compression between locating part 193 and hand casting die 191, when pressing reset key When 19 power disappears, the third return springs 194, which make to push away under the action of elastic force, hooks 192 reset movement of part, convenient for making User reuses vacuum chuck；Since the groove width of third groove 20 is greater than the thickness of the locating part 193, part 192 is hooked when pushing away When sliding along fixing piece 16, locating part 193 contradicts the side wall of third groove 20, hooks part 192 in third groove 20 so that pushing away It is moved in groove width stroke, makes to push away and hook part 192 and moved in the distance of setting, avoid pushing away that hook the mobile stroke of part 192 excessive and de- From the pedestal 3.Further, the third return springs 194 are compressed spring, the third return springs 194 One end and locating part 193 are against the other end and hand casting die 191 of the third return springs 194 are against the third resets Elastic component 194 is located in push away and hook in part 192.In the present embodiment, the quantity of the reset key 19 is two, and two resets are pressed Key 19 is symmetrical arranged, and improves the structural stability of this vacuum chuck, is operated convenient for Manual press.

The fixing piece 16, which is offered, hooks the accommodation groove 22 of part 192 and for being installed with locating part 193 for being installed with to push away Limiting slot 21, the card slot 17 and limiting slot 21 are connected to accommodation groove 22.

In the present embodiment, accommodation groove 22 is to push away hook part 192 to provide mobile space, and rise to the movement for hooking part 192 is pushed away To the effect of guiding, locating part 193 is installed in limiting slot 21, convenient for the dismounting of locating part 193, improves locating part 193 Position precision and stability unlock self-locking mechanism by the mutual cooperation of reset key 19 and fixing piece 16, make sealing element with Pedestal 3 separates, and easy to operate, quick, structure is simple.

In the present embodiment, the quantity of first return springs 8 is multiple, and multiple first return springs 8 are in ring Shape array distribution makes 2 stress balance of support base between the support base 2 and pedestal 3, and the support base 2 is avoided to tilt； Preferably, the quantity of first return springs 8 is three；The bottom surface of the support base 2 is provided with multiple for positioning first The positioning mechanism of position elastic component 8, avoids the first return springs 8 from shifting or topple over when being compressed, leads to vacuum chuck work It fails.When the first return springs 8 are one, the diameters of first return springs 8 be greater than the internal diameter of support base 2 and Less than the outer diameter of support base 2, when the first return springs 8 are multiple, the diameter of the first return springs 8 is less than support base 2 Annular width, annular width=(internal diameter of outer diameter-support base 2 of support base 2) ÷ 2 of support base 2, it is multiple first reset bullets Property 8 circular array of part is distributed between the support base 2 and pedestal 3, is made 2 stress balance of support base, is avoided the branch Seat 2 is supportted to tilt.

In the present embodiment, the shape that the self-locking mechanism is engaged by clamping using the card slot 17 of hook elastic slice 15 and fixing piece 16 Formula is clamped sealing element with pedestal 3 in pressing by outside force, and in other embodiments, the self-locking mechanism can be used other existing The form of clamping engagement is clamped sealing element with pedestal 3 in pressing by outside force, such as push type electronic key closing self-locking mechanism.

In the present embodiment, vacuum chuck of the invention is applied to handset bracket, and in other embodiments, the vacuum is inhaled The application of disk further includes cup fixing seat, manipulator, fixture, suspender and hook etc..

Embodiment 2

The present embodiment difference from example 1 is that:

The sealing element is made of the connector 10 for being located in the base station 1 of the first groove 4 and connecting with base station 1, described Base station 1 is flexible glue base station, and the sealing element is without the second gasket 6.Using flexible glue base station, extended capability is strong, with the first groove 5 Side wall against even closer, avoid and be additionally arranged at the bottom of the second gasket bring trouble in base station 1, save cost of material and Labour.

Embodiment 3

The present embodiment difference from example 1 is that:

The sealing element further includes the first sealing ring (not shown) for being sheathed on base station 1, and first sealing ring is used In the side wall against the first groove 4 to seal the gap between the sealing element and support base 2；The side wall of the base station 1 opens up There is the 4th groove (not shown), first sealing ring is located in the 4th groove.Sealing element is made using the first sealing ring Gap between support base 2 reaches sealing state and makes to go smoothly when the side wall of the first sealing ring is against the side wall of the first groove 4 The combination of the equipment such as machine, tablet computer, support base 2, the first gasket 5 and base station 1 forms closed cavity, extraneous air without Method flows into cavity, to guarantee the air-tightness of cavity；On the one hand the 4th groove being arranged is easily installed the first sealing ring in base On platform 1, on the other hand it is to avoid the sidewall friction of the first sealing ring and the first groove and be detached from base station 1, ensure that the first sealing The stability and position precision of circle.The common sealing function of first sealing ring and the second gasket is more advantageous to and improves cavity Air-tightness.

Embodiment 4

The present embodiment and embodiment 3 the difference is that:

The sealing element is by being located in the base station 1 of the first groove 4, the first sealing ring for being sheathed on base station 1, being opened in base station 4th groove of 1 side wall and the connector 10 connecting with base station 1 composition, the sealing element is without the second gasket.It avoids It is additionally arranged at the bottom of the second gasket bring trouble in base station 1, saves cost of material and labour.

Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way, Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.

Claims (10)

1. a kind of vacuum chuck, it is characterised in that: including the sealing element, support base and pedestal set gradually, the support base is set It is equipped with the first groove and the first gasket, first gasket is set to the top of the support base, first groove Bottom wall is offered for for the perforative first through hole of sealing element, the sealing element to be arranged in first groove and is revealed in support Seat, when the side wall of the side wall at the top of the sealing element and the first groove against when, between the sealing element and support base between Gap reaches sealing state；The first return springs for springing back the support base are provided between the support base and pedestal, The vacuum chuck further includes the self-locking mechanism for sealing element to be lock onto pedestal.

2. a kind of vacuum chuck according to claim 1, it is characterised in that: the sealing element includes being located in the first groove Base station and the connector that is connect with base station, the connector run through the first through hole.

3. a kind of vacuum chuck according to claim 2, it is characterised in that: be provided with and be used between the base station and pedestal The second return springs of the sealing element are sprung back, second return springs run through the first groove and first through hole, described Connector is used to limit the position of the second return springs.

4. a kind of vacuum chuck according to claim 2, it is characterised in that: the sealing element further includes being resisted against base station Second gasket of bottom, second gasket are located in the first groove, and second gasket is recessed for sealing first Gap between the side wall and pedestal of slot.

5. a kind of vacuum chuck according to claim 1, it is characterised in that: the sealing element is provided with for contradicting support First buckle of the bottom of seat.

6. a kind of vacuum chuck according to claim 1, it is characterised in that: the side wall of the pedestal offers button hole, institute The side wall for stating support base is provided with the second buckle of the side wall for contradicting button hole.

7. a kind of vacuum chuck according to claim 1, it is characterised in that: it is recessed to offer second at the top of the support base Slot, first gasket are located in second groove.

8. a kind of vacuum chuck according to claim 1, it is characterised in that: the self-locking mechanism includes and the sealing element The hook elastic slice of connection and the fixing piece connecting with the pedestal, the fixing piece offer the card for contradicting hook elastic slice Slot.

9. a kind of vacuum chuck according to claim 8, it is characterised in that: the hook elastic slice offers the first pin hole, The sealing element offers the second pin hole, and first pin hole is connected to the second pin hole, and the sealing element and hook elastic slice pin connect It connects.

10. a kind of vacuum chuck according to claim 8, it is characterised in that: the vacuum chuck further includes for contradicting The reset key of hook elastic slice, the reset key include hand casting die, push away hook part, locating part and for contradicting locating part and hand The third return springs of casting die, the hook part that pushes away offer third groove, and the locating part is arranged in the third groove, institute The groove width for stating third groove is greater than the thickness of the locating part, and the locating part is installed in the fixing piece, and the hook part that pushes away is slided Dynamic to be connected to fixing piece, the hand casting die is revealed in the side wall of pedestal.