Internal threaded hole connection type small telescopic air cylinder

Abstract

The utility model discloses an internal threaded hole connection type small telescopic air cylinder, and relates to the technical field of small telescopic air cylinders, the internal threaded hole connection type small telescopic air cylinder comprises an outer shell, a threaded groove is formed in one side of an inner cavity of the outer shell, the threaded groove is in threaded connection with a front end cover, a guide ring is arranged on one side of the front end cover, and a telescopic mechanism is arranged in the outer shell; the telescopic mechanism comprises a movable rod movably penetrating through the front end cover and the middle of the guide ring, a piston is fixedly arranged on one side of the movable rod, a sealing groove is formed in the middle of the piston, a sealing ring sleeves the middle of the sealing groove, a cushion is fixedly arranged on one side of the piston, and one side of the cushion abuts against the inner wall of one side of the inner cavity of the outer shell. According to the invention, the loosening and falling risks possibly occurring in the connecting process are improved, and the telescopic stroke range can be flexibly adjusted according to the actual working environment.

Description

Technical Field

[0001] The present application relates to the field of small telescopic cylinder technology, and in particular to a small telescopic cylinder with an internal threaded hole connection. Background Art

[0002] At present, small telescopic cylinders with internal threaded hole connection have the advantages of compact structure, long stroke, strong load capacity and good stability, so they are widely used in various mechanical equipment and systems.

[0003] Most of the existing small telescopic cylinders use quick connectors and flange connections, which may cause the risk of loosening and falling off during the connection process. In addition, quick connectors and flange connections do not have the ability to adjust the stroke according to specific circumstances. Utility Model Content

[0004] In order to improve the risk of loosening and falling off that may occur during the connection process, and to be able to flexibly adjust the telescopic stroke range according to the actual working environment, the present application provides a small telescopic cylinder with an internal threaded hole connection.

[0005] The internal threaded hole connection type small telescopic cylinder provided in this application adopts the following technical solution:

[0006] An internal threaded hole connection type small telescopic cylinder comprises an outer shell, a threaded groove is provided on one side of the inner cavity of the outer shell, a front end cover is threadedly connected to the threaded groove, a guide ring is provided on one side of the front end cover, and a telescopic mechanism is provided inside the outer shell;

[0007] The telescopic mechanism includes a movable rod that runs through the front end cover and the middle of the guide ring. A piston is fixedly provided on one side of the movable rod. A sealing groove is opened in the middle of the piston. A sealing ring is sleeved in the middle of the sealing groove. A buffer pad is fixedly provided on one side of the piston. One side of the buffer pad abuts against the inner wall of one side of the inner cavity of the outer shell.

[0008] By adopting the above technical solution, the threaded connection between the front end cover and the threaded groove can facilitate the disassembly and replacement of the front end cover, and the front end cover and the guide ring can provide support and guidance for the movable rod, and the piston can drive the movable rod to achieve reciprocating motion, and the buffer pad can prevent the piston from directly contacting the inner wall of the outer shell and causing damage when the piston moves back and forth.

[0009] Preferably, the telescopic mechanism further comprises two bases fixed on one side surface of the piston and the guide ring respectively, and a spring is fixed between the two bases.

[0010] By adopting the above technical solution, the base can firmly fix the spring on the surface of the piston and the surface of the guide ring.

[0011] Preferably, a threaded connection hole is provided in the middle of the movable rod.

[0012] By adopting the above technical solution, the threaded connection hole is reserved in order to be able to connect with other equipment such as a probe.

[0013] Preferably, a large air inlet hole is opened on one side of the upper portion of the outer shell, a small air inlet hole is opened on one side of the bottom of the large air inlet hole, and one end of the small air inlet hole is fixedly passed through the inner cavity side wall of one side of the outer shell.

[0014] By adopting the above technical solution, the gas can be transported to the small air inlet hole through the large air inlet hole, and then transported to the inner cavity of the outer shell through the small air inlet hole.

[0015] Preferably, an air inlet nozzle for introducing gas is threadedly connected to the upper part of the inner cavity of the large air inlet hole.

[0016] By adopting the above technical solution, the air inlet nozzle can deliver the gas into the large air inlet hole and can also discharge the gas in the large air inlet hole.

[0017] Preferably, two oppositely arranged mounting holes are fixedly provided on the upper end of the outer shell.

[0018] By adopting the above technical solution, the mounting holes can help connect the outer shell with other devices and can play a certain fixing effect.

[0019] Preferably, a plurality of glue injection holes symmetrically arranged are opened on one side surface of the outer shell, and a sealing plug for sealing is clamped on one side of the glue injection hole.

[0020] By adopting the above technical solution, the glue injection hole can inject glue into the thread groove through the glue injection hole when the front end cover is installed, so that the front end cover can obtain a better fixing effect.

[0021] Preferably, one side surface of the front end cover is provided with reserved disassembly holes which are symmetrically arranged with each other.

[0022] By adopting the above technical solution, the reserved disassembly hole can help the front end cover to be quickly disassembled and installed.

[0023] Preferably, an air vent is provided on the upper portion of the through hole of the front end cover through which the movable rod movably penetrates.

[0024] By adopting the above technical solution, the air vent can assist the movement of the piston.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The movable rod is connected to other equipment such as probes through the threaded connection hole set inside the movable rod, and the threaded connection hole can adjust the insertion depth of the probe, thereby adjusting the length of the stroke, and the threaded connection of the probe and other components can be linked more firmly, and the threaded connection between the front end cover and the outer shell can facilitate the disassembly and installation of the front end cover, and also facilitate the replacement of the piston inside the outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall picture of this application;

[0028] Figure 2 A cross-sectional view of the present application;

[0029] Figure 3 This is a cross-sectional view of the position of the active rod of this application;

[0030] Figure 4 This is a schematic diagram of the telescopic mechanism of this application;

[0031] Figure 5 This is a schematic diagram of the internal structure of the device of this application.

[0032] Reference numerals: 1, outer shell; 2, front end cover; 3, guide ring;

[0033] 4. Telescopic mechanism; 41. Movable rod; 42. Piston; 43. Sealing groove; 44. Sealing ring; 45. Spring; 46. Base; 47. Threaded connection hole;

[0034] 5. Air vent; 6. Air inlet nozzle; 7. Small air inlet; 8. Large air inlet; 9. Mounting hole; 10. Glue injection hole; 11. Sealing plug; 12. Reserved disassembly hole; 13. Threaded groove; 14. Buffer pad. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The embodiment of the present application discloses a small telescopic cylinder with an internal threaded hole connection.

[0037] Example 1

[0038] Reference Figure 1 、 23. An internal threaded hole connection type small telescopic cylinder comprises an outer shell 1 with a cylinder in the middle, and a large air inlet hole 8 is provided on one side of the upper surface of the outer shell 1, and the upper side wall of the inner cavity of the large air inlet hole 8 is threadedly connected to the lower outer surface of the air inlet nozzle 6, and the air inlet nozzle 6 can introduce and extract gas, and a small air inlet hole 7 is provided on one side of the bottom surface of the large air inlet hole 8, and the small air inlet hole 7 is fixedly penetrated through the cylinder wall in the middle of the outer shell 1 at one end away from the large air inlet hole 8, and the inner cavity of the air inlet nozzle 6 is communicated with the inner cavity of the large air inlet hole 8, and the inner cavity of the large air inlet hole 8 is communicated with the inner cavity of the small air inlet hole 7, so that gas can be transported to the inner cavity of the large air inlet hole 8 through the air inlet nozzle 6, and then transported to the inner cavity of the small air inlet hole 7, and finally transported into the cylinder inside the outer shell 1 through the small air inlet hole 7, and a threaded groove 13 is provided on the inner cavity of the outer shell 1 away from the small air inlet hole 7. And the threaded groove 13 can be threadedly connected to the front end cover 2, and two reserved disassembly holes 12 are provided on one side surface of the front end cover 2, and the two reserved disassembly holes 12 are symmetrically arranged, and an air vent 5 is provided on the upper surface of the through hole in the middle of the front end cover 2, and the air vent 5 is located on the upper part of the movable rod 41 that is movable through the middle of the front end cover 2, and the side surface of the front end cover 2 facing away from the air vent 5 is in contact with the side surface of the guide ring 3, and a number of symmetrically arranged glue injection holes 10 are provided on the surface of the outer shell 1 on the side of the front end cover 2, and the lower through hole on one side of the glue injection hole 10 is fixed through the threaded groove 13, and the glue injection hole 10 is located on the inner surface of one side of the front end cover 2 and is clamped with the outer surface of the sealing plug 11 for sealing, and two mounting holes 9 are provided on both sides of the upper end of the outer shell 1, and the two mounting holes 9 are not only symmetrically arranged, but also fixed through the outer shell 1.

[0039] The large air inlet hole 8 opened on one side of the outer shell 1 is threadedly connected to the air inlet nozzle 6, and the inner cavity of the large air inlet hole 8 is connected with the inner cavity of the air inlet nozzle 6, so that the gas can be transported to the inside of the large air inlet hole 8 through the air inlet nozzle 6, and a small air inlet hole 7 is opened at the lower part of one side of the large air inlet hole 8, and the inner cavity of the small air inlet hole 7 is connected with the inner cavity of the large air inlet hole 8, and one end of the small air inlet hole 7 is fixed through the cylinder wall inside the outer shell 1, and the inner cavity of the small air inlet hole 7 is connected with the cylinder of the inner cavity of the outer shell 1. Since the large air inlet hole 8 is connected with the inner cavity of the small air inlet hole 7, the gas can be transported to the large air inlet hole 8 through the air inlet nozzle 6, and then transported to the small air inlet hole 7 from the large air inlet hole 8, and finally transported to the cylinder inside the outer shell 1 through the small air inlet hole 7.

[0040] The threaded groove 13 is threadedly connected to the front end cover 2, so that the front end cover 2 can be threadedly connected to the outer shell 1 and fixed on one side of the outer shell 1, and the reserved disassembly hole 12 opened on one side of the front end cover 2 can assist in the disassembly and installation of the front end cover 2 on the outer shell 1, and the inner cavity of the glue injection hole 10 opened on the surface of one side of the outer shell 1 and the front end cover 2 passes through the side wall of the threaded groove 13, so that glue can be injected into the glue injection hole 10 when the front end cover 2 is threadedly connected to the threaded groove 13. The glue injection hole 10 transports the glue into the threaded groove 13, which can make the front end cover 2 more firmly installed, and a sealing plug 11 is provided in the glue injection hole 10 to prevent dust from entering the glue injection hole 10 and plug the glue injection hole 10 at 10 degrees.

[0041] The mounting holes 9 fixedly penetrating the upper sides of the outer shell 1 are arranged with high precision, which can ensure the accuracy of docking with other equipment.

[0042] Reference Figure 2 、 4 5. A telescopic mechanism 4 is provided in the internal cylinder of the outer shell 1, and the telescopic mechanism 4 includes a movable rod 41 that movably penetrates the front end cover 2. The movable rod 41 not only movably penetrates the front end cover 2, but also movably penetrates the middle part of the guide ring 3, and a threaded connection hole 47 is also opened in the middle part of the movable rod 41.

[0043] The side surface of the movable rod 41 away from the guide ring 3 is fixedly connected to the side surface of the piston 42, and a circle of sealing grooves 43 are provided on the middle surface of the piston 42, and the middle of the two side surfaces of the sealing grooves 43 abuts against the outer surface of the sealing ring 44, and the sealing ring 44 is sleeved on the sealing grooves 43, and the side surface of the piston 42 away from the sealing ring 44 is fixedly connected to the side surface of the buffer pad 14, and the side surface of the buffer pad 14 away from the piston 42 can abut against the inner wall of the cylinder inside the outer shell 1. Although the buffer pad 14 can abut against the cylinder wall inside the outer shell 1, under normal circumstances, the buffer pad 14 can abut against the inner wall of the cylinder inside the outer shell 1. There is still a certain space between the punch pad 14 and the cylinder wall of the inner cavity of the outer shell 1, and this space is located below the small air inlet hole 7, and two bases 46 are symmetrically provided on the surface of the piston 42 away from the sealing groove 43, and two bases 46 are also fixedly connected to the surface of the guide ring 3 away from the front end cover 2. The two bases 46 on the surface of the piston 42 are opposite to the two bases 46 on the surface of the guide ring 3 and have the same structure, and the two bases 46 on the surface of the piston 42 and the two bases 46 on the surface of the guide ring 3 are fixedly connected to the two ends of the two springs 45 respectively.

[0044] The movable rod 41 passes through the front end cover 2 and the guide ring 3, so that the movable rod 41 can realize reciprocating motion back and forth in the middle of the front end cover 2 and the guide ring 3, and the front end cover 2 and the guide ring 3 can also provide support and guidance for the movement of the movable rod 41, so that the movable rod 41 always maintains linear motion, and the piston 42 fixedly connected to the other end of the movable rod 41 can push the movable rod 41 to move, and the outer ring of the other side surface of the piston 42 is set as a slope, so that the gas can better enter the gap between the piston 42 and the cylinder wall inside the outer shell 1 through the small air inlet hole 7, and the sealing groove 43 and the sealing ring 44 on one side of the piston 42 cooperate with each other to play a sealing role when the gas pushes the piston 42. With the sealing groove 43 and the sealing ring 44, there will be no situation where gas leakage cannot push the piston 42.

[0045] The spring 45 provided between the piston 42 and the guide ring 3 can push the piston 42 back to its original position after the gas that pushes the piston 42 to move is extracted, and the buffer pad 14 can provide a buffering effect for the piston 42 at this time, preventing the piston 42 from directly contacting the cylinder wall inside the outer shell 1 and damaging the piston 42.

[0046] The implementation principle of the internal threaded hole connection type small telescopic cylinder in the embodiment of the present application is: the staff first installs the probe and other components that need to be connected to the threaded connection hole 47 inside the movable rod 41, and adjusts the telescopic stroke range of the probe, and then aligns the mounting hole 9 on the upper part of the outer shell 1 with the installation position on other equipment, and installs the outer shell 1, and then connects the air pipe to the air inlet nozzle 6.

[0047] At this time, it is only necessary to use the air pipe to transport gas to the air inlet nozzle 6. The gas will be transported to the large air inlet hole 8 through the air inlet nozzle 6, and then transported from the large air inlet hole 8 to the small air inlet hole 7, and finally transported to the reserved space between the cylinder wall and the piston 42 in the inner cavity of the outer shell 1 through the small air inlet hole 7. When the gas reaches between the piston 42 and the outer shell 1, since a sealing groove 43 and a sealing ring 44 are provided on one side of the piston 42, the continuously entering gas will push the piston 42 to move forward. When the piston 42 moves forward, it will drive the movable rod 41 to move in the middle of the front end cover 2 and the guide ring 3, and drive the probe connected to the threaded connection hole 47 to move. The piston 42 will compress the spring 45 while moving forward. When the continuously input gas is extracted, the piston 42 that has lost its thrust is pushed backward under the reaction force of the compressed spring 45, so that the piston 42 returns to its original position and waits for the next gas input and push.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. Internal threaded hole connection type small telescopic cylinder, characterized by: It comprises an outer shell (1), a thread groove (13) is provided on one side of the inner cavity of the outer shell (1), a front end cover (2) is threadedly connected to the thread groove (13), a guide ring (3) is provided on one side of the front end cover (2), and a telescopic mechanism (4) is provided inside the outer shell (1); The telescopic mechanism (4) comprises a movable rod (41) that movably passes through the front end cover (2) and the middle of the guide ring (3); a piston (42) is fixedly provided on one side of the movable rod (41); a sealing groove (43) is provided in the middle of the piston (42); a sealing ring (44) is sleeved in the middle of the sealing groove (43); a buffer pad (14) is fixedly provided on one side of the piston (42); and one side of the buffer pad (14) abuts against the inner wall of one side of the inner cavity of the outer shell (1).

2. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: The telescopic mechanism (4) further comprises two bases (46) respectively fixed on the piston (42) and one side surface of the guide ring (3), and a spring (45) is fixed between the two bases (46).

3. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: A threaded connection hole (47) is provided in the middle of the movable rod (41).

4. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: A large air inlet (8) is provided on one side of the upper portion of the outer shell (1), a small air inlet (7) is provided on one side of the bottom portion of the large air inlet (8), and one end of the small air inlet (7) is fixedly passed through the inner cavity side wall of one side of the outer shell (1).

5. The internal threaded hole connection type small telescopic cylinder according to claim 4, characterized in that: The upper portion of the inner cavity of the large air inlet hole (8) is threadedly connected with an air inlet nozzle (6) for introducing gas.

6. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: Two mounting holes (9) arranged opposite to each other are fixedly provided through the upper end of the outer shell (1).

7. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: A plurality of glue injection holes (10) symmetrically arranged are provided on one side surface of the outer shell (1), and a sealing plug (11) for sealing is clamped on one side of the glue injection hole (10).

8. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: One side surface of the front end cover (2) is provided with reserved disassembly holes (12) that are symmetrically arranged with each other.

9. The internal threaded hole connection type small telescopic cylinder according to claim 1, characterized in that: An air vent (5) is provided on the upper portion of the through hole of the front end cover (2) through which the movable rod (41) movably penetrates.

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