Negative pressure adsorption device

Abstract

The invention relates to the technical field of dental suction equipment, in particular to a negative pressure suction device which comprises a holding rod, a suction head is mounted on the holding rod, a suction assembly is mounted on the holding rod, the suction head is connected with the suction assembly, the suction assembly comprises a pressure pipe, a pull rod is slidably mounted on the pressure pipe, and a piston and a movable table are connected to the pull rod. A locking cavity is formed in the movable table, the locking cavity and the movable table form a buckling table, a fixing assembly for fixing the movable table is installed on the holding rod and comprises a locking table, a sliding rod is slidably installed on the locking table, a pushing groove is formed in the sliding rod, a movable plate is rotatably installed on the locking table, a chuck and a pressing head are installed on the movable plate, and the chuck is arranged in the pushing groove. The pressing head presses the buckling table to fix the movable table. The negative pressure adsorption device has the effect of improving the convenience of the negative pressure adsorption device in the operation process.

Description

Technical Field

[0001] The present application relates to the technical field of dental aspiration devices, and in particular, to a negative pressure adsorption device. Background Art

[0002] With the development of science and technology, oral health has gradually become a concern for people. Regarding the teeth in the oral cavity, problems such as teeth cleaning, tooth repair, and dental filling are often involved. When repairing and filling teeth, it is necessary to paste patches or veneers on the teeth.

[0003] In most tooth repair or filling processes, usually, a liquid medicine or glue is first applied to the teeth, and then a patch or veneer is clamped and placed on the teeth by a clamp such as forceps or pliers. The position of the patch or veneer is repeatedly adjusted by the pliers or forceps until it is accurately pasted on the teeth. However, after the patch is placed on the teeth, it is not easy to clamp and adjust the position of the patch by using forceps or pliers again, and it is easy to clamp the gums or cause pain during clamping. Summary of the Invention

[0004] In order to improve the convenience of the negative pressure adsorption device during operation, the present application provides a negative pressure adsorption device.

[0005] The present application provides a negative pressure adsorption device, adopting the following technical solutions: A negative pressure adsorption device includes a grip rod, an aspirator head is installed on the grip rod, a suction assembly is installed on the grip rod, the aspirator head is connected to the suction assembly, the suction assembly includes a pressure tube, a pull rod is slidably installed on the pressure tube, a piston and a movable table are connected to the pull rod, a locking cavity is formed on the movable table, the locking cavity and the movable table form a snap table, a fixing assembly for fixing the movable table is installed on the grip rod, the fixing assembly includes a locking table, a sliding rod is slidably installed on the locking table, a pushing groove is formed on the sliding rod, a movable plate is rotatably installed on the locking table, a clamping head and a pressing head are installed on the movable plate, the clamping head is arranged in the pushing groove, and the pressing head presses the snap table to fix the movable table.

[0006] By adopting the above technical solution, press the suction head on the patch, then pull the movable table. The movable table drives the pull rod and the piston to slide, and the gas in the pumping tube is drawn to form a negative pressure, which is convenient for generating suction to adsorb the patch. Press the movable table against the locking table. At this time, the pressing head on the movable plate will extend into the locking cavity on the movable table, push the sliding rod in the direction of the movable table, and the sliding rod will push the chuck. The movable plate rotates to turn the pressing head to abut against the buckling table on the movable table, thus facilitating the quick fixation of the movable table. After the movable table is fixed, it is convenient for the staff to release the control of the movable table, so that the staff does not need to continuously apply a pulling force to the movable table for operation, and the patch is always adsorbed on the suction head until the patch is completely adhered to the appropriate position on the tooth, and then the patch is unlocked, thus facilitating the staff to control the patch and enhancing the convenience of the negative pressure adsorption device during use.

[0007] In a specific feasible implementation, the fixing assembly further includes a push rod, the push rod is rotatably connected to the sliding rod, a locking rod is installed on the push rod, a locking groove for limiting the locking rod is formed on the holding rod, a spring is sleeved on the sliding rod, one end of the spring is connected to the sliding rod, and the other end is connected to the locking table.

[0008] By adopting the above technical solution, it is convenient to quickly push the sliding rod to move by pushing the push rod. When the two pressing heads are pushed to abut against the buckling table on the movable table, rotate the push rod to push the locking rod on the push rod into the locking groove, and the sliding rod can be quickly limited and fixed, preventing the sliding rod from sliding and the movable table from separating from the pressing head, which is convenient for the quick fixation of the movable table.

[0009] In a specific feasible implementation, a fixing rod is installed on the locking table, the movable plate is arranged as a triangular plate, one corner of the movable plate is installed on the fixing rod, the other corner of the movable plate is installed with the chuck, and the third corner of the movable plate is installed with the pressing head.

[0010] By adopting the above technical solution, the movable plate is arranged as a triangular plate, and the fixing rod, the pressing head and the chuck are arranged in a triangular position, which is convenient for controlling the chuck and the pressing head.

[0011] In a specific feasible implementation, an arc-shaped concave surface is formed on the chuck, and an inserting rod is slidably installed on the holding rod, and the inserting rod is used to insert into one side of the arc-shaped concave surface of the chuck.

[0012] By adopting the above technical solution, when the pressing head rotates to abut against the buckling platform on the movable table, the two chucks will move away from each other and open to present an open state. At this time, the inserting rod is inserted between the two chucks. Due to the acting force generated by the negative pressure atmospheric pressure, the movable table always has a tendency to move away from the locking table. The movable table will push the two pressing heads to approach each other, and the movable plate will generate a continuous acting force on the sliding rod. At this time, when the inserting rod is inserted between the two chucks, the movable table will pull the movable plate to clamp and press on the inserting rod, clamping the movable plate, avoiding the thrust generated by the movable plate on the sliding rod during the fixing process of the movable table, which is beneficial to enhancing the service life of the sliding rod and the movable plate. At the same time, fixing and limiting the movable plate and the sliding rod separately can also enhance the stability of fixing the movable table.

[0013] In a specific feasible implementation scheme, the pressing head is set as an arc-shaped plate, and the convex arc surface of the pressing head is connected to the movable plate.

[0014] By adopting the above technical solution, through the action of the atmospheric pressure and the arc surface on the pressing head, the movable table will push the two pressing heads to approach each other. The pressing head drives the movable plate to rotate so that the movable plate acts on the sliding rod and pushes the sliding rod to move, thus facilitating the rapid detachment of the movable table from the pressing head and enhancing the flexibility of unlocking the movable table.

[0015] In a specific feasible implementation scheme, the suction head includes a connecting plate, the connecting plate is installed on the holding rod, two or more support plates are installed on the connecting plate, suction cups are installed on the support plates, connecting channels are opened on the connecting plate and the support plates, and the suction cups are communicated with the suction component through the connecting channels.

[0016] By adopting the above technical solution, three support plates are added to the connecting plate, and suction cups are respectively installed on the three support plates, increasing the number of suction cups and enhancing the adsorption capacity of the suction head.

[0017] In a specific feasible implementation scheme, the suction component further includes a suction pipe, the suction pipe is installed on the holding rod, one end of the suction pipe is communicated with the suction head, and the other end is communicated with the pressure pipe. Ventilation holes for adjusting air pressure balance are opened on the pressure pipe and the holding rod.

[0018] In a specific feasible implementation scheme, a pulling ear is installed on the movable table.

[0019] By adopting the above technical solution, pulling the pulling ear is convenient for controlling the movement of the movable table.

[0020] In a specific feasible implementation scheme, a vibrator is installed on the holding rod.

[0021] By adopting the above technical solution, after the suction head adsorbs the patch, glue and liquid medicine will be dropped on the patch. When the patch is pressed against the teeth or other parts in the oral cavity, the vibrator is turned on, causing the suction head to vibrate, facilitating the diffusion of the liquid medicine and glue, and thus facilitating the more stable adhesion of the patch.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Press the suction head on the patch, then pull the movable table. The movable table drives the pull rod and the piston to slide, drawing the gas in the pressure tube to form a negative pressure, facilitating the generation of suction to adsorb the patch. Press the movable table tightly against the locking table. At this time, the pressing head on the movable plate will extend into the locking cavity on the movable table, pushing the sliding rod in the direction of the movable table. The sliding rod will push the chuck, and the movable plate rotates to turn the pressing head to abut against the buckling table on the movable table, thus facilitating the quick fixation of the movable table. After the movable table is fixed, it is convenient for the staff to release the control of the movable table, enabling the staff to perform operations without continuously applying a pulling force to the movable table, which is beneficial to enhancing the convenience of the negative pressure adsorption device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the negative pressure adsorption device according to an embodiment of the present application.

[0024] Figure 2 is a cross-sectional view of the grip rod according to an embodiment of the present application.

[0025] Figure 3 is a cross-sectional view of the suction assembly according to an embodiment of the present application.

[0026] Figure 4 is a schematic diagram of the movable table according to an embodiment of the present application.

[0027] Figure 5 is a cross-sectional view of the fixing assembly according to an embodiment of the present application.

[0028] Figure 6 is a schematic diagram of the insertion rod according to an embodiment of the present application.

[0029] Figure 7 is a schematic diagram showing the state when the fixing assembly of the embodiment of the present application fixes the movable table.

[0030] Figure 8 is a schematic diagram of the locking rod according to an embodiment of the present application.

[0031] Reference numerals: 1, grip bar; 11, locking groove; 2, suction head; 21, connecting plate; 22, support plate; 23, suction cup; 3, suction assembly; 31, suction pipe; 32, pressure pipe; 321, ventilation hole; 33, pull rod; 34, piston; 35, movable table; 351, locking cavity; 352, buckling platform; 36, pull ear; 37, fixing assembly; 371, locking platform; 372, sliding rod; 3721, pushing groove; 373, fixing rod; 374, movable plate; 3741, chuck; 3742, pressing head; 375, spring; 376, push rod; 3761, locking rod; 3762, push handle; 377, inserting rod; 4, vibrator. Detailed implementation mode

[0032] The following will further elaborate on this application in conjunction with the attached Figure 1-8 drawings.

[0033] An embodiment of this application discloses a negative pressure adsorption device. Referring to Figure 1 and Figure 2 , it includes a grip bar 1. A suction head 2 is fixedly installed on the grip bar 1. A suction assembly 3 is arranged inside the grip bar 1. A small vibrator 4 is fixedly installed on the grip bar 1. The vibrator 4 is a prior art, which makes the grip bar 1 vibrate. The working principle of the vibrator 4 will not be described in detail in the embodiment of this application.

[0034] The suction head 2 includes a connecting plate 21. The connecting plate 21 is fixedly connected to the grip bar 1. Three support plates 22 are fixedly installed on the connecting plate 21. Suction cups 23 are respectively installed on the three support plates 22. The suction cups 23 are made of soft rubber. Connecting channels are provided in the three support plates 22 and the connecting plate 21. The suction cups 23 are communicated with the suction assembly 3 through the connecting channels.

[0035] By adding three support plates 22 to the connecting plate 21 and respectively installing suction cups 23 on the three support plates 22, the number of suction cups 23 is increased, and the adsorption capacity of the suction head 2 is enhanced. The suction cups 23 are made of soft rubber material, which is beneficial to dispersing the pressure during the pressing process by the staff, protecting the patch, and preventing damage to the material caused by excessive pressing force.

[0036] Referring to Figure 2 and Figure 3, the suction assembly 3 includes a straw 31 fixedly installed in the grip rod 1. One end of the straw 31 close to the connecting plate 21 communicates with the connecting channel in the connecting plate 21. The end of the straw 31 far from the suction cup 23 is fixedly connected with a pressure tube 32. The pressure tube 32 communicates with the straw 31. Ventilation holes 321 for balancing air pressure are provided on the pressure tube 32 and the grip rod 1. A pull rod 33 is slidably connected to the pressure tube 32. One end of the pull rod 33 extends into the pressure tube 32. A piston 34 is fixedly installed at the end of the pull rod 33 extending into the pressure tube 32. The piston 34 is a rubber plug. The piston 34 closely adheres to the inner wall of the pressure tube 32 and is slidably connected to the pressure tube 32. The other end of the pull rod 33 extends out of the pressure tube 32 and is fixedly installed with a movable platform 35. A pull ear 36 is fixedly installed on the movable platform 35.

[0037] When using the grip rod 1 to adsorb the patch, the staff holds the grip rod 1, presses the suction cup 23 on the suction head 2 against the patch, and then pulls the pull ear 36. The pull ear 36 drives the movable platform 35 to move. The movable platform 35 drives the pull rod 33 and the piston 34 to slide in the pressure tube 32. When the piston 34 moves, it draws and pushes the gas on the side of the pressure tube 32 close to the straw 31 and the gas in the straw 31, so that a negative pressure is formed on the side of the pressure tube 32 close to the straw 31, thereby enabling the suction cup 23 to generate suction force to adsorb the patch. The gas on the side of the pressure tube 32 far from the straw 31 is discharged from the ventilation holes 321 to maintain pressure balance. Using the piston 34 to draw and push is convenient for quickly forming a negative pressure in the pressure tube 32, generating an adsorption force to hold the patch, which is convenient for the staff to quickly suck the patch.

[0038] Refer to Figure 4 and Figure 5 , a locking cavity 351 is provided on the movable platform 35. The locking cavity 351 and the movable platform 35 form a buckling platform 352. A fixing assembly 37 for fixing the movable platform 35 is installed on the grip rod 1. The fixing assembly 37 includes a locking platform 371 fixedly installed on the grip rod 1. A sliding rod 372 is slidably installed on the locking platform 371. A pushing groove 3721 is provided on the sliding rod 372. Two fixing rods 373 are fixedly installed on the locking platform 371. The two fixing rods 373 are respectively arranged on both sides of the sliding rod 372. A movable plate 374 is rotatably installed on the fixing rod 373. The movable plate 374 is set as a triangular plate. One corner of the movable plate 374 is connected to the fixing rod 373. A clamping head 3741 is fixedly installed on the other corner of the movable plate 374. The clamping head 3741 is arranged in the pushing groove 3721 on the sliding rod 372. An arc-shaped concave surface is provided on the side of the clamping head 3741 far from the fixing rod 373. A pressing head 3742 is fixedly installed on the third corner of the movable plate 374. The pressing head 3742 is set as an arc shape. The convex arc surface of the pressing head 3742 is fixedly connected to the movable plate 374.

[0039] Refer to Figure 5 and Figure 7 , Figure 5The state of the chuck 3741 and the pressure head 3742 when the fixing component 37 is not used. At this time, the two chucks 3741 on the locking table 371 are in a closed state. Figure 7 This is the state of locking and fixing the movable table 35. When it is necessary to fix the movable table 35, the movable table 35 is abutted against the locking table 371. At this time, the pressure head 3742 on the movable plate 374 will extend into the locking cavity 351 on the movable table 35, push the sliding rod 372 in the direction of the movable table 35. The sliding rod 372 will push the chuck 3741, and the movable plate 374 will rotate around the fixed rod 373. At this time, the two pressure heads 3742 will rotate to abut against the fastening table 352 on the movable table 35.

[0040] Refer to Figure 5 and Figure 8 As shown in FIGS. and, a spring 375 is sleeved on the sliding rod 372. One end of the spring 375 is fixedly connected to the sliding rod 372 and the other end is fixedly connected to the locking table 371. A push rod 376 is rotatably installed on the sliding rod 372. A locking rod 3761 is fixedly installed on the push rod 376. A locking groove 11 for limiting the locking rod 3761 is formed on the grip rod 1. A push handle 3762 is fixedly installed on the push rod 376.

[0041] By pushing the push rod 376, it is convenient to quickly push the sliding rod 372 to move. When the two pressure heads 3742 are pushed to rotate and abut against the fastening table 352 on the movable table 35, rotate the push rod 376 to push the locking rod 3761 on the push rod 376 into the locking groove 11, so that the sliding rod 372 can be quickly limited and fixed, preventing the sliding rod 372 from sliding and the movable table 35 from detaching from the pressure head 3742, which is convenient for quickly fixing the movable table 35. After the movable table 35 is fixed, it is convenient for the staff to release the control of the pulling ear 36, so that the staff does not need to continuously hold the pulling ear 36 for operation, which is beneficial to enhancing the convenience of the negative pressure adsorption device during use.

[0042] The pressure head 3742 is set as an arc-shaped plate. When it is necessary to unlock the movable table 35, turn the locking rod 3761 away from the locking groove 11 to quickly unlock the sliding rod 372. On the one hand, the spring 375 will rebound and push the sliding rod 372 away from the movable table 35. The sliding rod 372 will pull the movable plate 374 to rotate so that the pressure head 3742 turns away from the fastening table 352. On the other hand, due to the negative pressure in the pressure pipe 32, the atmospheric pressure will pull the piston 34 and the pull rod 33 to move away from the sliding rod 372. The pull rod 33 will drive the movable table 35 to move. When the movable table 35 moves, through the action of the arc surface on the pressure head 3742, the movable table 35 will push the two pressure heads 3742 to approach each other. The pressure head 3742 drives the movable plate 374 to rotate so that the movable plate 374 acts on the sliding rod 372 and pushes the sliding rod 372 to move, thus facilitating the movable table 35 to quickly disengage from the pressure head 3742, enhancing the flexibility of unlocking the movable table 35 and achieving a quick unlocking process.

[0043] Reference Figure 6 、 Figure 7 and Figure 8 On the grip rod 1, a plug rod 377 is slidably installed, and the plug rod 377 passes through the locking platform 371 and is slidably connected to the locking platform 371.

[0044] When the pressure head 3742 rotates to abut against the buckle platform 352 on the movable platform 35, the two clamping heads 3741 will move away from each other and open to present an open state. At this time, the plug rod 377 is inserted between the two clamping heads 3741. Due to the acting force generated by the negative pressure atmospheric pressure, the movable platform 35 always has a tendency to move away from the locking platform 371. The movable platform 35 will push the two pressure heads 3742 closer to each other. Due to the setting of the arc surface of the pressure head 3742, the movable platform 35 has a tendency to pull the movable plate 374 to rotate, and the movable plate 374 will generate a continuous acting force on the sliding rod 372. At this time, when the plug rod 377 is inserted between the two clamping heads 3741, the movable platform 35 will pull the movable plate 374 to clamp and press on the plug rod 377, clamping the movable plate 374, avoiding the thrust generated by the movable plate 374 on the sliding rod 372 during the fixing of the movable platform 35, which is beneficial to enhancing the service life of the sliding rod 372 and the movable plate 374. At the same time, separately fixing and limiting the movable plate 374 and the sliding rod 372 can also enhance the stability of the fixing of the movable platform 35.

[0045] The implementation principle of the embodiment of the present application is as follows: Press the suction cup 23 on the suction head 2 on the patch, and then pull the pull tab 36. The pull tab 36 drives the movable platform 35 to move. The movable platform 35 drives the pull rod 33 and the piston 34 to slide in the pressure tube 32. When the piston 34 moves, it draws the gas on the side of the pressure tube 32 close to the straw 31 and the gas in the straw 31, so that a negative pressure is formed on the side of the pressure tube 32 close to the straw 31, thereby making the suction cup 23 generate suction to adsorb the patch. When it is necessary to fix the movable platform 35, the movable platform 35 is abutted against the locking platform 371. At this time, the pressure head 3742 on the movable plate 374 will extend into the locking cavity 351 on the movable platform 35, push the sliding rod 372 in the direction of the movable platform 35. The sliding rod 372 will push the clamping head 3741, and the movable plate 374 will rotate around the fixed rod 373. At this time, the two pressure heads 3742 will rotate to abut against the buckle platform 352 on the movable platform 35. Insert the locking rod 3761 into the locking groove 11 to fix and limit the sliding rod 372, and insert the plug rod 377 between the clamping heads 3741 to limit and fix the movable plate 374, which is convenient for quickly fixing the movable platform 35, is beneficial for the staff to control the grip rod 1, and enhances the use performance of the negative pressure adsorption device.

[0046] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A negative pressure adsorption device, characterized in that: Comprising a grip rod (1), a suction head (2) is installed on the grip rod (1), a suction assembly (3) is installed on the grip rod (1), the suction head (2) is connected to the suction assembly (3), the suction assembly (3) includes a pressure tube (32), a pull rod (33) is slidably installed on the pressure tube (32), a piston (34) and a movable table (35) are connected to the pull rod (33), a locking cavity (351) is formed on the movable table (35), the locking cavity (351) and the movable table (35) form a locking platform (352), a fixing assembly (37) for fixing the movable table (35) is installed on the grip rod (1), the fixing assembly (37) includes a locking platform (371), a sliding rod (372) is slidably installed on the locking platform (371), a pushing groove (3721) is formed on the sliding rod (372), a movable plate (374) is rotatably installed on the locking platform (371), a clamping head (3741) and a pressing head (3742) are installed on the movable plate (374), the clamping head (3741) is arranged in the pushing groove (3721), and the pressing head (3742) presses the locking platform (352) to fix the movable table (35).

2. The negative pressure adsorption device according to claim 1, characterized in that: The fixing assembly (37) further includes a push rod (376), the push rod (376) is rotatably connected to the sliding rod (372), a locking rod (3761) is installed on the push rod (376), a locking groove (11) for limiting the locking rod (3761) is formed on the grip rod (1), a spring (375) is sleeved on the sliding rod (372), one end of the spring (375) is connected to the sliding rod (372), and the other end is connected to the locking platform (371).

3. The negative pressure adsorption device according to claim 1, characterized in that: A fixing rod (373) is installed on the locking platform (371), the movable plate (374) is arranged as a triangular plate, one corner of the movable plate (374) is installed on the fixing rod (373), the clamping head (3741) is installed on another corner of the movable plate (374), and the pressing head (3742) is installed on the third corner of the movable plate (374).

4. The negative pressure adsorption device according to claim 3, characterized in that: An arc-shaped concave surface is formed on the clamping head (3741), a plug rod (377) is slidably installed on the grip rod (1), and the plug rod (377) is used for inserting into one side of the arc-shaped concave surface of the clamping head (3741).

5. The negative pressure adsorption device according to claim 3, characterized in that: The pressing head (3742) is arranged as an arc-shaped plate, and the convex arc surface of the pressing head (3742) is connected to the movable plate (374).

6. The negative pressure adsorption device according to claim 1, wherein: The suction head (2) includes a connecting plate (21), the connecting plate (21) is installed on the grip rod (1), two or more support plates (22) are installed on the connecting plate (21), suction cups (23) are installed on the support plates (22), connecting channels are formed on the connecting plate (21) and the support plates (22), and the suction cups (23) are communicated with the suction assembly (3) through the connecting channels.

7. A negative pressure adsorption device according to claim 1, characterized in that: The suction assembly (3) further includes a straw (31), the straw (31) is installed on the grip rod (1), one end of the straw (31) communicates with the suction head (2), and the other end communicates with the pressure tube (32). The pressure tube (32) and the grip rod (1) are provided with ventilation holes (321) for adjusting air pressure balance.

8. A negative pressure adsorption device according to claim 1, characterized in that: A pull tab (36) is installed on the movable table (35).

9. The negative pressure adsorption device according to claim 1, wherein: A vibrator (4) is installed on the grip rod (1).

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