CN113895794B

CN113895794B - Drawing storage device capable of being rapidly stored for architectural design

Info

Publication number: CN113895794B
Application number: CN202111360617.0A
Authority: CN
Inventors: 王朝明; 聂玉兰
Original assignee: Huiyang Group Co ltd
Current assignee: Huiyang Group Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-05-12
Anticipated expiration: 2041-11-17
Also published as: CN113895794A

Abstract

The invention discloses a drawing storage device capable of being quickly stored for building design, which relates to the technical field of drawing storage devices and comprises a barrel and a scroll, wherein a wheel disc is fixedly connected with the inner wall of the barrel in a rotating way, a plurality of storage chambers are formed in the surface of the wheel disc, a clamping groove I is formed in the surface of the scroll, a rotating shaft I is fixedly connected with the bottom surface of the wheel disc, the bottom surface of the rotating shaft I is rotatably connected with the bottom surface of the inner wall of the barrel in a fixed shaft way, a drain opening is formed in the upper surface of the barrel, an elevating column is slidably connected with the inner wall of the storage chamber, a limiting block I is clamped on the surface of the elevating column, the limiting block I is in a cuboid shape, the surface of the limiting block I is fixedly connected with the bottom surface of the scroll, and a driving component for driving the wheel disc to intermittently rotate so that the upper ends of the storage chambers correspond to the drain opening positions. Through the mutual coordination among the structures, the outdoor drawing storage device has the effects of being convenient for outdoor carrying, separating storage marks for different types of drawings, being convenient for taking, placing and storing and protecting the drawings from scratch.

Description

Drawing storage device capable of being rapidly stored for architectural design

Technical Field

The invention relates to the technical field of building design, in particular to a drawing storage device capable of being rapidly stored for building design.

Background

Building design generally refers to a process in which a designer envisages problems existing during construction or use in advance according to an expected scheme before a building is constructed, and plans a solution to solve the problems, while using drawings and documents.

Because the building design sometimes needs to go on in the investigation of scene, just need use to deposit the device of accomodating to the drawing, traditional storage device is generally tubular container, and operating personnel is with the drawing rolling back stopper deposit in the section of thick bamboo, but this kind of mode can't be with drawing classified storage, when operating personnel need take out the drawing, need check one by one to examine and see, has led to accomodating inconvenient in-process, need improve.

Disclosure of Invention

The invention aims to provide a drawing storage device capable of being quickly stored for architectural design, which is convenient to carry outdoors, can be used for separately storing and marking different types of drawings, is convenient to take and store and can protect the drawings from scratch, and solves the problems that the traditional storage device is generally a cylindrical container, an operator can store the drawings in a cylindrical manner after winding the drawings, but the drawings cannot be stored in a classified manner, and inconvenience is caused in the storage process.

In order to achieve the above purpose, the present invention provides the following technical solutions: the drawing storage device capable of being quickly stored for building design comprises a barrel and a scroll, wherein the inner wall of the barrel is fixedly connected with a wheel disc in a rotating mode, a plurality of storage chambers are formed in the surface of the wheel disc, and a clamping groove I is formed in the surface of the scroll;

the rotary table is characterized in that a rotary shaft I is fixedly connected to the bottom surface of the rotary table, the bottom surface of the rotary shaft I is fixedly connected with the bottom surface of the inner wall of the cylinder body in a rotary mode, a drain opening is formed in the upper surface of the cylinder body, a lifting column is slidably connected to the inner wall of the storage chamber, a limiting block I is clamped on the surface of the lifting column, the limiting block I is in a cuboid shape, the surface of the limiting block I is fixedly connected with the bottom surface of the reel, and the rotary table further comprises a driving part for driving the rotary table to intermittently rotate, so that the upper ends of the storage chamber correspond to the drain opening.

Optionally, the drive part is including fixed the cup joint polygonal body of pivot one arbor arm, draw-in groove second has been seted up to polygonal bottom surface, the inner wall fixedly connected with spacing section of thick bamboo of barrel, the inner wall sliding connection of spacing section of thick bamboo has fixture block one, the surface of fixture block one with the common fixedly connected with spring one of inner wall of barrel, the upper end of fixture block one with the cell wall joint of draw-in groove second, the inner wall sliding connection of barrel has the carriage release lever, the arbor arm sliding sleeve of carriage release lever has cup jointed the sleeve, sleeve fixed connection is in the inner wall of barrel, the arbor arm of carriage release lever is fixed to be cup jointed the push pedal, the push pedal is followed telescopic inner wall slides, the arbor arm activity of carriage release lever has cup jointed spring two, the tip fixed mounting of carriage release lever has the gyro wheel.

Optionally, a handle is fixed at the end of the moving rod, and a finger hole is formed in the surface of the handle in a penetrating manner.

Optionally, the device further comprises labeling components for distinguishing a plurality of storage chambers.

Optionally, the marking part includes the label board, the surface of label board is followed the inner wall of rim plate slides from top to bottom, the spout has been seted up to the inner wall of rim plate, the inner wall sliding connection of spout has the follow-up piece, follow-up piece fixed connection is in the surface of label board, the inner wall of spout with the common fixedly connected with spring of surface of follow-up piece is three, the bottom of label board sets up to the cam-type, the inner wall fixedly connected with butt plate of barrel.

Optionally, the drawing collecting device further comprises a collecting part convenient for collecting and placing the drawing.

Optionally, accomodate the part and include the threaded rod, threaded rod dead axle rotation is connected the arm threaded connection of threaded rod has L shape pole, the confession has been seted up on the surface of butt board L shape pole passes and has the opening with it sliding connection, the socket has been seted up to the bottom surface of rim plate, the socket with the storage chamber is linked together, the screw thread groove has been seted up on the surface of elevating column, the inner wall fixedly connected with stopper second of storage chamber, the surface of stopper second with the cell wall sliding connection of screw thread groove, the surface dead axle rotation of barrel is connected with the swivel, the inner wall of swivel is provided with the tooth, the arm fixed sleeve of threaded rod has the gear, the surface of tooth with the surface engagement of gear.

Optionally, the upper end of barrel detachably is connected with the lid, the surface of lid sets up carries the handle.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the scroll in the storage chamber corresponding to the leak is taken out, an operator passes through the clamping groove I and winds the drawing on the surface of the scroll, the scroll is replaced in the storage chamber after the drawing is wound, and the bottom of the label plate at the leak is abutted against the abutting plate, so that the upper end of the label plate is exposed out of the wheel disc, the operator marks the category information of the drawing on the surface of the label plate conveniently, and the efficiency of the operator for storing and taking the drawing is greatly improved.

2. According to the invention, under the transmission cooperation of the label plate and the abutting plate, the label plate moving to the leakage opening can automatically move upwards under the abutting action of the abutting plate and move out of the wheel disc for an operator to check, so that the operator can conveniently take and mark the drawing.

3. According to the invention, under the transmission cooperation of the abutting plate, the lifting column and the scroll, in the drawing taking process, the scroll is enabled to wind and move upwards the scattered drawing through the upward moving and rotating process of the lifting column, so that the drawing taking device is convenient for operators to take and improves the convenience of device use.

4. According to the invention, the handle and the finger hole are arranged, so that the handle can be used as a handle of the movable cylinder body while the operator can push the movable rod conveniently, and the device is more convenient to use.

Drawings

FIG. 1 is an isometric view of a construction of the present invention;

FIG. 2 is a front cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2 in accordance with the present invention;

FIG. 4 is a top cross-sectional view of a portion of the structure of FIG. 2 in accordance with the present invention;

FIG. 5 is a schematic diagram of the connection of the follower block, spring III and tag plate structure of the present invention;

FIG. 6 is a schematic view of the positions of the label plate and the abutment plate structure of the present invention;

FIG. 7 is a bottom cross-sectional view of a portion of the structure of FIG. 2 in accordance with the present invention;

fig. 8 is a top cross-sectional view of a portion of the structure of fig. 2 in accordance with the present invention.

In the figure: 1. a cylinder; 2. a reel; 3. a wheel disc; 4. a storage chamber; 5. a clamping groove I; 6. a first rotating shaft; 7. a leak; 8. lifting columns; 9. a first limiting block; 10. a polygon; 11. a clamping groove II; 12. a limiting cylinder; 13. a clamping block I; 14. a first spring; 15. a moving rod; 16. a sleeve; 17. a push plate; 18. a second spring; 19. a roller; 20. a handle; 21. finger holes; 22. a label plate; 23. a chute; 24. a follower block; 25. a third spring; 26. an abutting plate; 27. a threaded rod; 28. an L-shaped rod; 29. a socket; 30. a thread groove; 31. a second limiting block; 32. a cover body; 33. a swivel; 35. teeth; 36. a gear.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 8, the present invention provides a technical solution: a drawing storage device capable of being rapidly stored for building design comprises a barrel 1 and a scroll 2, wherein a wheel disc 3 is fixedly connected to the inner wall of the barrel 1 in a rotating mode, a plurality of storage chambers 4 are formed in the surface of the wheel disc 3, and a clamping groove I5 is formed in the surface of the scroll 2;

the bottom surface fixedly connected with pivot one 6 of rim plate 3, the bottom surface of pivot one 6 and the bottom surface dead axle rotation of barrel 1 inner wall are connected, leak 7 has been seted up to the upper surface of barrel 1, the inner wall sliding connection of storage chamber 4 has lift post 8, lift post 8's surface joint has stopper one 9, stopper one 9 is the cuboid, stopper one 9's surface and the bottom surface fixed connection of spool 2, still include drive rim plate 3 and carry out intermittent type formula rotation, make the upper end of a plurality of storage chambers 4 and the corresponding drive component of leak 7 position, operating personnel is when taking in or transferring the drawing, firstly take off lid 32 from barrel 1, take out spool 2 in the storage chamber 4 of leak 7 department later, operating personnel penetrates draw-in groove one 5 with one side of drawing, then with the winding at spool 2's surface, place spool 2 in storage chamber 4 again after the drawing winding is accomplished, and move the storage chamber 4 of empty to leak 7 department through drive component, repeatedly above-mentioned process can accomodate many drawings, the work efficiency of operating personnel is convenient for improve.

Further, the driving part comprises a polygonal body 10 fixedly sleeved on a first 6-axis arm of the rotating shaft, a clamping groove II 11 is formed in the bottom surface of the polygonal body 10, a limiting cylinder 12 is fixedly connected to the inner wall of the cylinder body 1, a clamping block I13 is slidably connected to the inner wall of the limiting cylinder 12, a spring I14 is fixedly connected to the surface of the clamping block I13 and the inner wall of the cylinder body 1 together, the upper end of the clamping block I13 is clamped with the groove wall of the clamping groove II 11, a moving rod 15 is slidably connected to the inner wall of the cylinder body 1, a sleeve 16 is slidably sleeved on the shaft arm of the moving rod 15, a push plate 17 is fixedly sleeved on the shaft arm of the moving rod 15, the push plate 17 slides along the inner wall of the sleeve 16, a spring II 18 is movably sleeved on the shaft arm of the moving rod 15, a roller 19 is fixedly arranged at the end of the moving rod 15, and an operator takes down the cover body 32, pushing the handle 20 to drive the moving rod 15 to move towards the direction approaching the polygon 10, extruding the second spring 18 under the transmission of the push plate 17, moving the moving rod 15 to enable the roller 19 to synchronously move towards the direction approaching the polygon 10, driving the polygon 10 to rotate anticlockwise as shown in fig. 7, further enabling the wheel disc 3 to synchronously rotate under the transmission of the first rotating shaft 6, driving the storage chamber 4 corresponding to the original leak port 7 to move away from the leak port 7 through the rotating process of the wheel disc 3, and then approaching the empty storage chamber 4 to the leak port 7, pushing the first clamping block 13 to slide downwards through the groove wall of the second clamping groove 11 in the rotating process of the polygon 10, further enabling the first clamping block 13 to be separated from the second clamping groove 11 in the previous clamping connection, driving the first clamping block 13 to correspond to the second clamping groove 11 in the anticlockwise sequence along with the continued rotation of the polygon 10, at the moment loosening the handle 20, the movable rod 15 moves away from the polygon 10 under the elastic restoring force of the spring II 18, so that the roller 19 is separated from the polygon 10 again, the clamping block I13 is completely clamped into the clamping groove II 11 under the elastic force of the spring I14, the polygon 10 cannot rotate freely in a limiting mode, and the effect of completely moving the empty storage chamber 4 to the position of the leak 7 is achieved, and an operator can conveniently put in a new drawing.

In order to facilitate the carrying of the cylinder 1 by an operator, further, a handle 20 is fixed at the end of the moving rod 15, and a finger hole 21 is provided on the surface of the handle 20.

Further, still include the mark part that distinguishes a plurality of storerooms 4, mark part includes label board 22, the inner wall along rim plate 3 of label board 22 slides from top to bottom, spout 23 has been seted up to the inner wall of rim plate 3, the inner wall sliding connection of spout 23 has follower 24, follower 24 fixed connection is on the surface of label board 22, the inner wall of spout 23 and the common fixedly connected with spring three 25 of follower 24's surface, the bottom of label board 22 sets up to the cam-type, the inner wall fixedly connected with butt plate 26 of barrel 1, the butt plate 26 of the label board 22 bottom butt of leak opening 7 position, thereby make its upper end expose rim plate 3, the operating personnel can mark on label board 22, classify the drawing of accomodating, conveniently carry out follow-up searching, simultaneously through the rotation process of rim plate 3, butt plate 26 surface butt plate 22 changes rather than the separation, and drive label board 22 down moves in rim plate 3 under the effect of spring three 25, and move to the butt plate 22 of leak opening 7 department with butt plate 26 when circular motion, and then remove spring three 25, the upward take in the new drawing mark of moving into to the operating personnel.

The utility model provides a convenient operation personnel hold spool 2 and take out the drawing, and use is more convenient, further, still include the storage part that makes things convenient for the drawing to get and put, storage part includes threaded rod 27, threaded rod 27 dead axle rotation connects the arm threaded connection at threaded rod 27 has L shape pole 28, the surface of butt plate 26 has been seted up and has the opening for L shape pole 28 to pass and sliding connection with it, socket 29 has been seted up to the bottom surface of rim plate 3, socket 29 is linked together with storage room 4, the screw thread groove 30 has been seted up on the surface of lifting column 8, the inner wall fixedly connected with stopper second 31 of storage room 4, the surface and the cell wall sliding connection of screw thread groove 30 of stopper second 31, the surface dead axle rotation of barrel 1 is connected with swivel 33, the inner wall of swivel 33 is provided with tooth 35, the arm fixed cup joint of threaded rod 27 has gear 36, the surface and the surface engagement of gear 36 of tooth 35, in the operation process of taking the drawing, by rotating the swivel 33 to enable the teeth 35 to synchronously move, and further enable the gear 36 to rotate, in the process of rotating the gear 36, the threaded rod 27 is enabled to rotate, the L-shaped rod 28 is enabled to move upwards under the limit of the abutting plate 26 in the process of rotating the threaded rod 27, the L-shaped rod 28 passes through the socket 29 and pushes the lifting column 8 to move upwards, further in the sliding connection relationship between the limiting block II 31 and the thread groove 30, the lifting column 8 moves upwards and rotates, the scroll 2 moves synchronously along with the lifting column, when the drawing is stored in the storage chamber 4, the surface abuts against the inner wall of the storage chamber 4 due to the scattering of the drawing, the friction force between the drawing and the inner wall of the storage chamber 4 is increased, the drawing is difficult to take out, the drawing can be rewound on the surface of the scroll 2 to a certain extent through the rotating process of the scroll 2, through the process, the friction force between the outside of the drawing moving process and the abutting part of the inner wall of the storage chamber 4 can be reduced, so that an operator can take out the drawing more easily, meanwhile, the abutting force between the surface of the drawing and the inner wall of the storage chamber 4 is greatly reduced, the phenomenon that the surface of the drawing is scraped with the inner wall of the storage chamber 4 in the drawing taking process can be avoided, the content of the drawing is damaged, the drawing taking obstruction is reduced, the operator can conveniently hold the scroll 2 to take out the drawing through the upward moving process of the scroll 2, and the effect of more convenient use is achieved.

In order to prevent drawing from dropping, further, the upper end of the cylinder body 1 is detachably connected with a cover body 32, and a lifting handle is arranged on the surface of the cover body 32, so that the cylinder body 1 and the cover body 32 can be detachably connected in a threaded fit mode.

Working principle: when the drawing storage device capable of being rapidly stored for the building design is used, an operator firstly removes the cover body 32 from the cylinder body 1 after drawing or when the drawing needs to be transferred and stored, then takes out the scroll 2 in the storage chamber 4 corresponding to the leak 7, the operator passes one side of the drawing through the clamping groove 5 and winds the drawing on the surface of the scroll 2, the scroll 2 is placed in the storage chamber 4 again after the drawing is wound, the bottom of the label plate 22 at the leak 7 is abutted against the abutting plate 26, the upper end of the label plate is exposed out of the wheel disc 3, the operator can mark the stored drawing on the label plate 22, the user can conveniently search, and the cover body 32 is covered again after the storage is finished.

When the drawing is required to be stored again, as in the above process, after the cover 32 is removed by the operator, the handle 20 is pushed to move the moving rod 15 in the direction approaching the polygon 10, and simultaneously the spring two 18 is pressed under the transmission of the push plate 17, the moving rod 15 moves to drive the roller 19 to synchronously move in the direction approaching the polygon 10, and further drive the polygon 10 to rotate counterclockwise in the direction shown in fig. 7, so that the wheel disc 3 synchronously rotates under the transmission of the rotating shaft one 6, the storage chamber 4 corresponding to the original leak 7 moves away from the leak 7 through the rotating process of the wheel disc 3, the empty storage chamber 4 is moved towards the leak 7, and simultaneously in the rotating process of the polygon 10, the groove wall of the clamping groove two 11 pushes the clamping block one 13 to move downwards, so that the clamping block one 13 is separated from the clamping groove two 11 clamped before, and as the polygon 10 continues to rotate, the clamping block I13 corresponds to the position of the next clamping groove II 11 in anticlockwise sequence, the handle 20 is loosened, the moving rod 15 moves away from the polygon 10 under the elastic force of the spring II 18, the roller 19 is separated from the polygon 10 again, the clamping block I13 is completely clamped into the clamping groove II 11 under the elastic force of the spring I14, the empty storage chamber 4 is completely moved to the position of the drain opening 7, simultaneously, in the rotating process of the wheel disc 3, the label plate 22 abutted against the surface of the abutting plate 26 moves synchronously and separates from the clamping groove II, the label plate 22 moves downwards into the wheel disc 3 under the action of the spring III 25, the label plate 22 moved to the position of the drain opening 7 abuts against the abutting plate 26 during circular motion, the spring III 25 is extruded to move upwards, the wheel disc 3 is moved out, and an operator can conveniently mark newly placed drawings, through above-mentioned process, can make things convenient for operating personnel to coil the drawing and deposit as above-mentioned mode, and repeat above-mentioned process and accomodate many drawings, and every drawing all has the mark to be convenient for get and take, use swiftly convenient.

In the process of taking the drawing, the rotatable swivel 33 of operating personnel drives tooth 35 and moves in step, thereby make gear 36 rotate, in gear 36 carries out pivoted in-process, drive threaded rod 27 and rotate, threaded rod 27 rotates and make L shape pole 28 upwards move under the spacing of butt plate 26, make L shape pole 28 pass socket 29 and promote lifting column 8 and upwards move, thereby under the sliding connection relation of stopper two 31 and thread groove 30, make lifting column 8 upwards move and rotate, and make spool 2 carry out synchronous movement under the transmission of stopper one 9, because the drawing is deposited in depositing chamber 4, the drawing looses and can make surface butt depositing chamber 4 inner wall, cause the drawing to take out difficulty, can make to a certain extent the re-winding on spool 2 through the rotation process of spool 2, thereby the pressure of supporting between the outside of drawing and the depositing chamber 4 inner wall has been reduced, thereby operating personnel can more easily take out, and because the pressure of supporting between the drawing surface and the depositing chamber 4 inner wall reduces, can prevent its surface and the depositing chamber 4 of taking out from upwards moving, the effect of the drawing is more convenient for the spool 2 is held in the process of taking out, the drawing is convenient for the drawing is taken out.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a building design is with drawing storage device that can accomodate fast, includes barrel (1) and spool (2), its characterized in that: the inner wall of the cylinder body (1) is fixedly connected with a wheel disc (3) in a rotating way, a plurality of storage chambers (4) are formed in the surface of the wheel disc (3), and a clamping groove I (5) is formed in the surface of the scroll (2);

the rotary table is characterized in that a rotary shaft I (6) is fixedly connected to the bottom surface of the rotary table (3), the bottom surface of the rotary shaft I (6) is fixedly connected with the bottom surface of the inner wall of the barrel (1) in a rotating manner, a drain opening (7) is formed in the upper surface of the barrel (1), a lifting column (8) is slidably connected to the inner wall of the storage chamber (4), a limiting block I (9) is clamped on the surface of the lifting column (8), the limiting block I (9) is in a cuboid shape, the surface of the limiting block I (9) is fixedly connected with the bottom surface of the reel (2), and the rotary table further comprises a driving part for driving the rotary table (3) to rotate intermittently, so that the upper ends of the storage chambers (4) correspond to the drain opening (7);

the driving component comprises a polygonal body (10) fixedly sleeved on a shaft arm of the first rotating shaft (6), a clamping groove II (11) is formed in the bottom surface of the polygonal body (10), a limiting cylinder (12) is fixedly connected to the inner wall of the cylinder body (1), a clamping block I (13) is slidably connected to the inner wall of the limiting cylinder (12), a spring I (14) is fixedly connected to the surface of the clamping block I (13) and the inner wall of the cylinder body (1), the upper end of the clamping block I (13) is clamped with the groove wall of the clamping groove II (11), a moving rod (15) is slidably connected to the inner wall of the cylinder body (1), a sleeve (16) is slidably sleeved on the shaft arm of the moving rod (15), and a push plate (17) is fixedly sleeved on the shaft arm of the moving rod (15); the push plate (17) slides along the inner wall of the sleeve (16), a second spring (18) is movably sleeved on the shaft arm of the moving rod (15), and a roller (19) is fixedly arranged at the end part of the moving rod (15); a handle (20) is fixed at the end part of the movable rod (15); the automatic labeling device comprises a barrel body (1), and is characterized by further comprising labeling components for distinguishing a plurality of storage chambers (4), wherein the labeling components comprise a label plate (22), the surface of the label plate (22) vertically slides along the inner wall of the wheel disc (3), a chute (23) is formed in the inner wall of the wheel disc (3), a follow-up block (24) is slidably connected to the inner wall of the chute (23), the follow-up block (24) is fixedly connected to the surface of the label plate (22), a spring III (25) is fixedly connected to the inner wall of the chute (23) and the surface of the follow-up block (24), the bottom end of the label plate (22) is arranged in a cam shape, an abutting plate (26) is fixedly connected to the inner wall of the barrel body (1), and the bottom of the label plate (22) at the position of a leakage opening (7) abuts against the abutting plate (26), so that the upper end of the barrel body is exposed out of the wheel disc (3); still including making things convenient for drawing to get storage part of putting, storage part includes threaded rod (27), threaded rod (27) fixed axle rotation is connected with the arm threaded connection of threaded rod (27) has L shape pole (28), the confession has been seted up on the surface of butt plate (26) L shape pole (28) pass and sliding connection has the opening with it, socket (29) have been seted up to the bottom surface of rim plate (3), socket (29) with storage compartment (4) are linked together, thread groove (30) have been seted up on the surface of lift post (8), the inner wall fixedly connected with stopper two (31) of storage compartment (4), the surface of stopper two (31) with the cell wall sliding connection of thread groove (30), the surface fixed axle rotation of barrel (1) is connected with swivel (33), the inner wall of swivel (33) is provided with tooth (35), the arm of threaded rod (27) has fixedly cup jointed gear (36), the surface of tooth (35) with the surface engagement of gear (36).

2. The quick stowable drawing storage device for architectural design of claim 1, wherein: the surface of the handle (20) is provided with a finger hole (21) in a penetrating way.