CN214779253U - Hand-held type vacuum chuck - Google Patents

Abstract

The utility model belongs to the technical field of the technique of glass transport and specifically relates to a hand-held type vacuum chuck is related to, it includes the casing, be equipped with the base on the casing, outwards seted up vacuum groove, inner ring groove and outer annular groove in proper order from the lining on the one end terminal surface that the casing was kept away from to the base, the one end terminal surface that the casing was kept away from to the base sets up the annular intercommunication groove that feeds through in inner ring groove and outer annular groove, set up the inserting groove of intercommunication outer annular groove cell wall on the cell wall in annular intercommunication groove, the interpolation of inner ring inslot has the friction circle, the outer wall of friction circle is equipped with the first friction plate of sliding plug-in the inserting groove, the sliding plug-in outer annular groove has the sealing washer, the inner wall of sealing washer supports first friction plate tightly in the cell wall of inserting groove. This application can be convenient for workman's change friction ring.

Description

Hand-held type vacuum chuck

Technical Field

The application relates to the technical field of glass carrying technology, in particular to a handheld vacuum chuck.

Background

The glass is an amorphous inorganic non-metallic material, is widely applied to buildings for wind insulation and light transmission, and belongs to a mixture. In the process of using or carrying glass, a worker carries and installs the glass, the worker needs to grasp the edge of the glass to move when carrying or mounting the glass, the hand of the worker is easily scratched, and in order to ensure the safety of the worker, the worker usually carries and moves the glass by adopting a handheld vacuum chuck.

In the related technology of the handheld vacuum chuck, the handheld vacuum chuck comprises a casing, a handle and a base are arranged on the casing, a vacuum groove, an inner annular groove and an outer annular groove are sequentially formed in the end face, far away from the casing, of one end of the base from the inside to the outside, a vacuum pump used for pumping air in the vacuum groove and a pressure release valve used for releasing pressure in the vacuum groove are arranged in the casing, a friction ring is bonded on the inner wall of the inner annular groove through glue, and a sealing ring is inserted in the outer annular groove.

When the workman need use hand-held type vacuum chuck, the workman is kept away from the one end of casing with the base and is laminated in the glass surface, make glass and vacuum chamber form the vacuum cavity, the sealing washer all contradicts in the glass surface with the friction circle this moment, the sealing washer makes the difficult vacuum chamber that gets into of outside air, the friction circle makes the difficult emergence of glass and the relative position of base remove, the workman starts the vacuum pump, the vacuum pump extracts the atmospheric pressure in with the vacuum cavity, make the atmospheric pressure in the vacuum chamber be less than outside atmospheric pressure, thereby adsorb the glass surface on the base, the workman grasps the handle again and mentions glass, thereby made things convenient for workman to carry glass.

However, when the friction ring is worn and needs to be replaced, a worker needs to pull out the original friction ring from the inner annular groove with force, glue in the inner annular groove is remained and cleaned up, the worker then adheres the new friction ring with the glue in the inner annular groove, time and labor are wasted, and the friction ring is inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the workman to change the friction ring, this application provides a hand-held type vacuum chuck.

The application provides a hand-held type vacuum chuck adopts following technical scheme: the utility model provides a hand-held type vacuum chuck, includes the casing, be equipped with the base on the casing, the base is kept away from and is seted up vacuum groove, inner annular groove and outer annular groove from inside to outside in proper order on the one end terminal surface of casing, the base is kept away from the one end terminal surface of casing and is seted up the annular intercommunication groove in inner annular groove and outer annular groove, set up the inserting groove of intercommunication outer annular groove cell wall on the cell wall in annular intercommunication groove, inner annular inslot interpolation has the friction circle, the outer wall of friction circle is equipped with the first friction plate of slip grafting in the inserting groove, outer annular groove slip grafting has the sealing washer, the inner wall of sealing washer supports first friction plate tightly in the cell wall of inserting groove.

Through adopting above-mentioned technical scheme, when the workman need install the friction circle, the workman will slide earlier the friction circle peg graft in interior annular groove, and the first friction plate on the friction circle is pegged graft in the inserting groove that slides this moment, and the workman slides the sealing washer and pegs graft in outer annular groove again, and sealing washer interference fit is in outer annular groove this moment for the sealing washer compresses tightly first friction plate on the cell wall of inserting groove, thereby makes the friction circle be difficult for with interior annular groove separation.

When a worker needs to replace the friction ring, the worker firstly takes the sealing ring out of the outer annular groove, so that the inner wall of the sealing ring is separated from the first friction plate, then the worker pulls the friction ring again, so that the friction ring is separated from the inner annular groove, the first friction plate is separated from the insertion groove, and the worker repeats the step of installing the friction ring, so that the installation ring is replaced, the use of glue is reduced, the worker does not need to spend time on cleaning the glue, and the worker can conveniently replace the friction ring.

Optionally, a tightening groove communicated with the insertion groove is formed in the bottom groove wall of the outer annular groove, a first lip plate inserted into the tightening groove is arranged on the first friction plate, and the first lip plate is tightened on the groove wall of the tightening groove by the seal ring.

Through adopting above-mentioned technical scheme, when the workman slides the grafting of friction circle in the interior ring channel, the friction circle drives first friction plate and pegs graft in the inserting groove, and first friction plate drives first lip and slides and peg graft in supporting tight inslot this moment, and the workman slides the grafting of sealing washer in outer annular groove again, and the sealing washer supports first lip and tightly supports tight inslot this moment for first lip is difficult with supporting tight inslot separation, thereby makes the friction circle difficult with interior ring channel separation, has improved the stability of friction circle.

Optionally, the sealing ring includes a plug connector and an elastic sealing element abutting against the glass, the plug connector is in interference fit with the outer annular groove, and the elastic sealing element is arranged at one end of the plug connector, which is far away from the bottom groove wall of the outer annular groove.

Through adopting above-mentioned technical scheme, when the sealing washer is pegged graft in outer annular groove, the plug connector makes the plug connector be difficult for with outer annular groove separation with outer annular groove interference fit, simultaneously, elastic sealing element is used for contradicting and takes place deformation in glass and realize sealed effect to the sealed effect that the stable grafting of messenger's sealing washer is difficult for influencing the sealing washer in outer annular groove.

Optionally, one end of the elastic sealing element facing the plug connector is provided with a framework piece, and one end of the framework piece far away from the elastic sealing element is connected with the plug connector.

Through adopting above-mentioned technical scheme for be connected more stably between elastic sealing element and the plug connector, the skeleton piece plays plastic effect to elastic sealing element and plug connector, makes things convenient for the workman to be connected elastic sealing element and plug connector stable.

Optionally, the friction ring is provided with friction lines for abutting against the surface of the glass.

Through adopting above-mentioned technical scheme, further improved the friction effect of friction circle to glass.

Optionally, a first stabilizing member is arranged on the friction ring, a first stabilizing groove for the sliding insertion of the first stabilizing member is formed in the bottom groove wall of the inner annular groove, a second stabilizing member is arranged on the first stabilizing member, and a second stabilizing groove for the sliding insertion of the second stabilizing member is formed in the bottom groove wall of the first stabilizing groove.

Through adopting above-mentioned technical scheme, when the workman pegged graft the friction ring in interior annular groove, at first, the second stabilizing member is pegged graft in the second stabilizing groove, then, first stabilizing member slides and pegs graft in first stabilizing groove, and the friction ring is pegged graft in interior annular groove after that to increased the area of contact of friction ring with interior annular groove cell wall, further improved the stability of friction ring.

Optionally, a second friction plate for abutting against the groove wall of the vacuum groove is arranged on the friction ring.

By adopting the technical scheme, when the friction ring is inserted in the inner annular groove, the first friction plate is inserted in the insertion groove and tightly abuts against the groove wall of the insertion groove, the second friction plate is inserted in the vacuum groove and tightly abuts against the groove wall of the vacuum groove, and the first friction plate and the second friction plate are clamped on the base together, so that the stability of the friction ring is further improved.

Optionally, a second lip plate is arranged on the second friction plate, a plurality of vertical plate members are arranged on the bottom groove wall of the vacuum groove, the vertical plate members and the groove wall of the vacuum groove form a mounting groove for the second lip plate to be slidably inserted, and a mounting member for abutting the second lip plate in the mounting groove is slidably inserted in the mounting groove.

Through adopting above-mentioned technical scheme, when the second friction plate slides and pegs graft in the vacuum chamber, the second friction plate drives the second lip and pegs graft in the mounting groove, contradicts in the cell wall of mounting groove back until the second lip, and the workman pegs graft the installed part in the mounting groove for the installed part supports the second lip tightly in the mounting groove, thereby makes the second lip be difficult for with the mounting groove separation, has further improved the stability of friction circle.

To sum up, the application comprises the following beneficial technical effects:

1. through the arrangement of the shell, the base, the vacuum groove, the inner annular groove, the outer annular groove, the annular communicating groove, the sealing ring, the friction ring, the inserting groove and the first friction plate, the friction between the friction ring and the base is increased, so that the friction ring is not easy to separate from the inner annular groove, the use of glue is reduced, workers do not need to spend time to clean the glue, and the replacement of the friction ring by the workers is facilitated;

2. through the arrangement of the abutting groove and the first lip plate, the friction ring is not easy to separate from the inner annular groove, and the stability of the friction ring is improved;

3. through the arrangement of the elastic sealing element and the plug connector, the sealing ring is in interference fit in the outer annular groove, and the sealing effect of the sealing ring is not easily influenced;

4. through the arrangement of the framework piece, workers can conveniently connect the elastic sealing piece with the plug connector;

5. the friction effect of the friction ring on the glass is improved by the arrangement of the friction grains;

6. the arrangement of the first stabilizing piece, the first stabilizing groove, the second stabilizing piece and the second stabilizing groove increases the contact area of the friction ring and the groove wall of the inner annular groove, and further improves the stability of the friction ring;

7. through the arrangement of the second friction plate, the first friction plate and the second friction plate are clamped on the base together, so that the stability of the friction ring is further improved;

8. through the setting of second lip, found plate, mounting groove and installed part, make the second lip be difficult for with the mounting groove separation, further improved the stability of friction ring.

Drawings

FIG. 1 is a schematic diagram of the overall structure in the embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the friction ring, the seal ring, the first friction plate, the first lip, the second friction plate, and the second lip shown in the embodiment of the present application;

FIG. 3 is a schematic structural view showing a riser part, a mounting groove and a mounting part in the embodiment of the present application;

FIG. 4 is a cross-sectional structural view of an embodiment of the present application showing a first stabilizer, a first stabilizer groove, a second stabilizer, and a second stabilizer groove.

Reference numerals: 1. a housing; 11. a handle; 12. a base; 13. a working surface; 14. a vacuum tank; 15. an inner annular groove; 16. an outer annular groove; 2. a friction ring; 21. rubbing the lines; 22. a first stabilizer; 23. a first stabilizing slot; 24. a second stabilizer; 25. a second stabilizing slot; 3. a seal ring; 31. an elastomeric seal; 32. a plug-in unit; 33. a frame member; 4. an annular communicating groove; 41. inserting grooves; 42. abutting against the groove; 5. a first touch panel; 51. a first friction plate; 52. a first lip; 6. a second touch panel; 61. a second friction plate; 62. a second lip; 7. a vertical plate member; 71. mounting grooves; 72. and (4) a mounting piece.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a handheld vacuum chuck. As shown in fig. 1, a hand-held vacuum chuck, including casing 1, fixedly connected with supplies the handheld handle 11 of workman on the casing 1, the one end fixedly connected with of casing 1 is along the base 12 of horizontal direction extension, fixedly connected with vacuum pump and relief valve in the casing 1, the one end terminal surface definition that casing 1 was kept away from to base 12 is working face 13, working face 13 is towards glass when the workman uses hand-held vacuum chuck, vacuum groove 14 has been seted up outward from the inside to the working face 13 in proper order, inner ring groove 15 and outer annular groove 16, vacuum pump and relief valve all communicate in vacuum groove 14, inner ring groove 15 slides and pegs graft and has be used for contradicting the friction ring 2 on the glass surface, slide and peg graft in outer annular groove 16 and have be used for contradicting the sealing washer 3 on the glass surface, vacuum groove 14 forms the vacuum cavity with the glass surface.

As shown in fig. 1 and 2, an annular communication groove 4 is formed in the working surface 13, the annular communication groove 4 is communicated with the inner annular groove 15 and the outer annular groove 16, a plugging groove 41 is formed in a groove wall of the annular groove, the plugging groove 41 penetrates through a groove wall of the outer annular groove 16, a path of the plugging groove 41 is the same as a circular path of the annular communication groove 4, a first abutting plate 5 is fixedly connected to an outer side wall of the friction ring 2, the first abutting plate 5 is arranged in a circular shape, a first friction plate 51 is fixedly connected to the first abutting plate 5, the first friction plate 51 is arranged in a circular shape, when the first friction plate 51 is inserted into the plugging groove 41 in a sliding manner, the friction ring 2 is inserted into the inner annular groove 15 in a sliding manner, and the first abutting plate 5 abuts against a groove wall of the annular communication groove 4.

When the worker slides and inserts the sealing ring 3 in the outer annular groove 16, the sealing ring 3 is in interference fit in the outer annular groove 16, the sealing ring 3 is tightly connected with the first friction plate 51 at the moment, the first friction plate 51 is tightly connected with the groove wall of the insertion groove 41, the contact area between the friction ring 2 and the base 12 is increased, the friction ring 2 is not easily separated from the inner annular groove 15 when being inserted in the inner annular groove 15, the use of glue is reduced, the time for cleaning glue residues when the worker replaces the friction ring 2 is reduced, and the worker can conveniently replace the friction ring 2.

As shown in fig. 2, a resisting groove 42 is formed on a bottom groove wall of the outer annular groove 16, the resisting groove 42 penetrates through a groove wall of the inserting groove 41, a path formed by the resisting groove 42 is annularly arranged, a first lip 52 is fixedly connected to one end of the first friction plate 51 facing the resisting groove 42, the first lip 52 is annularly arranged, the first lip 52 is perpendicular to an outer side wall of the first friction plate 51, and a moving direction of the first lip 52 which is slidably inserted into the resisting groove 42 is vertically arranged.

When the first lip 52 is inserted into the abutting groove 42 in a sliding manner, the upper surface of the first lip 52 is flush with the bottom groove wall of the outer annular groove 16, a worker inserts the sealing ring 3 into the outer annular groove 16 in an interference fit manner, the inner side wall of the sealing ring 3 abuts against the first friction plate 51 at the moment, the bottom of the sealing ring 3 abuts against the bottom groove wall of the outer annular groove 16 and the upper surface of the first lip 52, and the sealing ring 3 is in the outer annular groove 16 in the interference fit manner, so that the first lip 52 is not separated from the abutting groove 42 easily, the friction ring 2 is not separated from the inner annular groove 15 easily, and the stability of the friction ring 2 is improved.

As shown in fig. 2, a plurality of second contact plates 6 are fixedly connected to the inner side wall of the friction ring 2, second friction plates 61 are fixedly connected to the second contact plates 6, the second contact plates 6 and the second friction plates 61 form an "L" shaped plate, when the friction ring 2 is slidably inserted into the inner annular groove 15, the first friction plate 51 abuts against the groove wall of the insertion groove 41, the second friction plate 61 abuts against the groove wall of the vacuum groove 14, and the friction ring 2 is located between the first friction plate 51 and the second friction plate 61, so that the contact area between the friction ring 2 and the base 12 is increased, and the stability of the friction ring 2 is further improved.

As shown in fig. 2, the first friction plate 51 and the second friction plate 61 are both made of elastic material, and the first friction plate 51 and the second friction plate 61 are both inclined toward the friction ring 2 in a natural state, when the friction ring 2 is inserted into the inner annular groove 15, the first friction plate 51 is inserted into the insertion groove 41, the second friction plate 61 is inserted into the vacuum groove 14 and abuts against the groove wall of the vacuum groove 14, and at this time, the first friction plate 51 and the second friction plate 61 are both deformed to urge the first friction plate 51 to abut against the groove wall of the insertion groove 41, and the second friction plate 61 to abut against the groove wall of the vacuum groove 14, thereby further improving the stability of the friction ring 2.

As shown in fig. 2 and 3, a second lip 62 is fixedly connected to a lower end surface of the second friction plate 61, the second lip 62 is perpendicular to the second friction plate 61, a plurality of vertical plate members 7 are fixedly connected to a bottom groove wall of the vacuum groove 14, the vertical plate members 7 and the groove wall of the vacuum groove 14 form a plurality of mounting grooves 71, in this embodiment, the number of the mounting grooves 71 is preferably four, the mounting grooves 71 are uniformly distributed along a circular path of the inner circular groove 15, and mounting pieces 72 are slidably inserted into the mounting grooves 71.

When the second friction plate 61 is inserted into the vacuum groove 14 and abutted against the wall of the vacuum groove 14, the second friction plate 61 drives the second lip plate 62 to be inserted into the mounting groove 71 until the second lip plate 62 is abutted against the bottom wall of the mounting groove 71, then the worker pushes the mounting member 72 to enable the mounting member 72 to be slidably inserted into the mounting groove 71, the mounting member 72 is abutted against the second lip plate 62 and simultaneously abutted against the second friction plate 61 against the wall of the vacuum groove 14, and the mounting member 72 is in interference fit with the mounting groove 71, so that the second lip plate 62 is not easily separated from the mounting groove 71, and the stability of the friction ring 2 is further improved.

As shown in fig. 3, one end of the friction ring 2 protruding out of the working surface 13 is fixedly connected with friction grains 21, and when the friction ring 2 abuts against the glass, the friction grains 21 abut against the surface of the glass, so that the friction effect of the friction ring 2 on the glass is improved.

As shown in fig. 4, two first stabilizing members 22 are fixedly connected to one end of the friction ring 2 facing the bottom groove wall of the inner annular groove 15, a second stabilizing member 24 is fixedly connected to one end of the first stabilizing member 22 away from the friction ring 2, the first and second stabilizing members 22 and 24 are both arranged in an annular shape, a first stabilizing groove 23 for the first stabilizing member 22 to be inserted is formed on the groove wall of the inner annular groove 15, a second stabilizing groove 25 for the second stabilizing member 24 to be inserted is formed on the groove wall of the first stabilizing groove 23, the cross sections of the first stabilizing member 22, the second stabilizing member 24 and the friction ring 2 are arranged in a step-shaped curve, when the friction ring 2 is inserted into the inner annular groove 15, the first stabilizing member 22 is inserted into the first stabilizing groove 23, the first stabilizing member 22 drives the second stabilizing member 24 to be inserted into the second stabilizing groove 25, the contact area between the friction ring 2 and the base 12 is further increased, thereby increasing the friction effect, the stability of the friction ring 2 is further improved.

As shown in fig. 2, the sealing ring 3 includes an elastic sealing element 31, a frame member 33 and a plug member 32, which are sequentially disposed from top to bottom, in this embodiment, the elastic sealing element 31 is preferably a sponge, the frame member 33 is preferably a plastic plate, and the plug member 32 is preferably a foam plate, wherein both the elastic sealing element 31 and the plug member 32 are fixedly connected to the frame member 33, so that a worker can conveniently manufacture and shape the sealing ring 3, and compared with the direct connection between the sponge and the foam plate, the fixed connection effect between the plastic plate and the sponge and the foam plate is better. The cystosepiment and outer annular groove 16 interference fit, the up end of sponge is higher than the up end of friction circle 2, and when the sponge was contradicted in the glass surface, the sponge took place deformation compression, and until glass and friction circle 2 are contradicted, the sealed effect of compression sponge is better, impels the cystosepiment to keep interference fit's state in outer annular groove 16 simultaneously.

The implementation principle of the handheld vacuum chuck in the embodiment of the application is as follows: when a worker needs to replace the friction ring 2, first, the worker pulls the elastic sealing member 31 such that the frame member 33 and the plug member 32 are separated from the outer annular groove 16, and at this time, the elastic sealing member 31, the frame member 33, and the plug member 32 are separated from the first friction plate 51 and the plug member 32 is separated from the first lip 52.

Then, the worker pulls all the mounting members 72 to separate the mounting members 72 from the mounting grooves 71 one by one, at this time, the mounting members 72 are separated from the second lip 62 and the second friction plate 61, the worker pulls the friction ring 2, the friction ring 2 drives the first friction plate 51 to be separated from the insertion groove 41, the first friction plate 51 drives the first lip 52 to be separated from the abutting groove 42, the friction ring 2 drives the second friction plate 61 and the second lip 62 to be separated from the mounting grooves 71 and the vacuum groove 14 in sequence, meanwhile, the friction ring 2 drives the first stabilizing member 22 to be separated from the first stabilizing groove 23 and the inner annular groove 15 in sequence, and the first stabilizing member 22 drives the second stabilizing member 24 to be separated from the second stabilizing groove 25, the first stabilizing groove 23 and the inner annular groove 15 in sequence, so that the friction ring 2 is separated from the inner annular groove 15.

Then, the worker inserts a new friction ring 2 into the inner annular groove 15, the second stabilizer 24 into the second stabilizer groove 25, the first stabilizer 22 into the first stabilizer groove 23, the first friction plate 51 into the insertion groove 41, the first lip 52 into the abutting groove 42, the second friction plate 61 into the vacuum groove 14, and the second lip 62 into the mounting groove 71, the worker further inserts the mounting member 72 into the mounting groove 71 to press the second friction plate 61 and the second lip 62, inserts the seal ring 3 into the outer annular groove 16, presses the plug member 32 against the first lip 52, presses the elastic seal member 31, the framework member 33, and the plug member 32 against the first friction plate 51 simultaneously, and presses the plug member 32 into the outer annular groove 16 in an interference fit manner, and presses the mounting member 72 into the mounting groove 71 in an interference fit manner, so that the stability of the friction ring 2 is improved.

According to the actions, the friction ring 2 is replaced, the practicability of glue is reduced, the time for cleaning glue residues by workers is reduced, and the workers can conveniently replace the friction ring 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a hand-held type vacuum chuck, includes casing (1), be equipped with base (12) on casing (1), vacuum groove (14), interior annular groove (15) and outer annular groove (16), its characterized in that have outwards seted up in proper order from the inside on the one end terminal surface that casing (1) was kept away from in base (12): the friction ring is characterized in that an annular communication groove (4) communicated with an inner annular groove (15) and an outer annular groove (16) is formed in the end face of one end, far away from the shell (1), of the base (12), a plugging groove (41) communicated with the groove wall of the outer annular groove (16) is formed in the groove wall of the annular communication groove (4), a friction ring (2) is inserted in the inner annular groove (15), a first friction plate (51) which is inserted in the plugging groove (41) in a sliding mode is arranged on the outer wall of the friction ring (2), a sealing ring (3) is inserted in the outer annular groove (16) in a sliding mode, and the inner wall of the sealing ring (3) abuts against the groove wall of the plugging groove (41) tightly.

2. A hand-held vacuum chuck according to claim 1, wherein: the bottom groove wall of the outer annular groove (16) is provided with a abutting groove (42) communicated with the inserting groove (41), the first friction plate (51) is provided with a first lip plate (52) inserted in the abutting groove (42), and the sealing ring (3) abuts against the first lip plate (52) on the groove wall of the abutting groove (42).

3. A hand-held vacuum chuck according to claim 1, wherein: the sealing ring (3) comprises a plug connector (32) and an elastic sealing element (31) abutting against the glass, the plug connector (32) is in interference fit with the outer annular groove (16), and the elastic sealing element (31) is arranged at one end, far away from the bottom groove wall of the outer annular groove (16), of the plug connector (32).

4. A hand-held vacuum chuck according to claim 3, wherein: one end, facing the plug connector (32), of the elastic sealing element (31) is provided with a framework piece (33), and one end, far away from the elastic sealing element (31), of the framework piece (33) is connected with the plug connector (32).

5. A hand-held vacuum chuck according to claim 1, wherein: and friction grains (21) used for abutting against the surface of the glass are arranged on the friction ring (2).

6. A hand-held vacuum chuck according to claim 1, wherein: be equipped with first stabilizing member (22) on friction circle (2), set up first stabilizing groove (23) that supply first stabilizing member (22) slip grafting on the bottom cell wall of interior annular groove (15), be equipped with second stabilizing member (24) on first stabilizing member (22), set up second stabilizing groove (25) that supply second stabilizing member (24) slip grafting on the bottom cell wall of first stabilizing groove (23).

7. A hand-held vacuum chuck according to claim 1, wherein: and a second friction plate (61) for tightly abutting against the wall of the vacuum groove (14) is arranged on the friction ring (2).

8. The hand-held vacuum chuck of claim 7, wherein: be equipped with second lip (62) on second friction plate (61), be equipped with a plurality of riser parts (7) on the bottom cell wall of vacuum groove (14), riser part (7) form mounting groove (71) that supply second lip (62) to slide and peg graft with the cell wall of vacuum groove (14), it has mounting piece (72) that are used for abutting tightly second lip (62) in mounting groove (71) to slide the grafting in mounting groove (71) to slide in mounting groove (71).

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