CN2301303Y - Pencil Pneumatic Tools - Google Patents

Abstract

The utility model provides a pen-type pneumatic tool, in its structural design, mainly make eccentric settings with the air chamber of cylinder, be equipped with the air inlet in the thicker one side of cylinder wall, and the thinner one side of the wall that the cylinder is relative then is equipped with the gas outlet, establish a transmission main shaft in the air chamber interpolation of this cylinder, insert in this transmission main shaft perisporium and establish the blade that has the flexible activity margin of number, in view of the above, when the blade that advances air promotion transmission main shaft of cylinder and pulls the transmission main shaft rotation, be eccentric state and cooperate the flexible margin of transmission main shaft blade because of the air chamber of cylinder, it is eccentric operation to make the transmission main shaft, and then make its torsion efficiency to the transmission production preferred of tool piece.

Description

Pencil Pneumatic Tools

The utility model relates to a pneumatic tool, in particular to a pen type pneumatic tool with increased torque.

By the way, the locking and unloading operation of bolts is traditionally carried out with hand tools, which is time-consuming and labor-intensive, resulting in low work efficiency and affecting industrial costs. Therefore, electric tools and pneumatic tools have come out to provide more practical Bolt lock removal tool.

As far as pneumatic tools are concerned, the air compressor is mainly used to inject gas into the tool cylinder, and the air pressure cycle of its inlet and outlet drives its internal transmission shaft to rotate, and then drives its attached tool parts to meet the required operations. model.

Conventional pneumatic tools, as shown in Figures 1 and 2, in terms of their structural design, a cylinder 11 is built in a cylindrical outer shell 10, an air chamber 12 is arranged in the center of the cylinder 11 and air inlets and outlets 13, 14 are penetrated. A transmission shaft 15 with a blade 16 is inserted in the air chamber 12, and the front end of the transmission shaft 15 is connected with another transmission rod 19 with a bearing 17 and a joint 18, and a clamp is set at the front end of the transmission rod 19. The tool part 21 can be assembled with the tool part 20 and given the function of sleeve replacement. Accordingly, when the air duct 22 at the rear end of the cylindrical outer casing 10 guides the gas of the air compressor (not shown) into the cylinder 11, the air is fed into the cylinder 11. The air port 13 enters the air chamber 12 and then is discharged from the air outlet 14. During the air pressure cycle, the blade 16 of the transmission shaft 15 is pushed to make it rotate, and then the transmission shaft 15 drives another transmission shaft 19 And the tool part 21 constitutes its overall transmission structure accordingly.

From the structure of the air tool disclosed above, its transmission is to use the cylinder’s air inlet and outlet cycle to drive the transmission spindle to rotate, but because the blades of the transmission spindle are just in line with the air chamber type of the cylinder, the rotation is quite uniform. In this case, its rotating speed will be relatively moderate, and its torque efficiency is relatively low. For the working conditions that require a large torque, sometimes it cannot meet the use requirements, and there are still things to be improved.

The main purpose of the utility model is to provide a pen type pneumatic tool with better torsion performance, and the waste gas discharged from the tool has a smooth circulation path.

The above-mentioned purpose of the utility model can be achieved in this way, that is, the pen-type pneumatic tool includes a cylindrical outer shell, a cylinder is built in it, an air chamber is arranged in the cylinder, and a transmission spindle is arranged in the air chamber, and the The peripheral wall of the drive shaft is provided with several slots for inserting blades, and the front end of the drive shaft is connected with a transmission rod by bearings and joints, and a clamping piece is provided at the front end of the transmission rod. The structural features are: the cylinder The air chamber is set eccentrically, with an air inlet on the thicker side wall of the cylinder wall, and an air outlet on the thinner side wall of the cylinder wall, and the air inlet and outlet are set opposite to each other; in addition, the The blade system is inserted into the slot through a spring, so that the blade has a movable expansion and contraction margin, so as to realize the eccentric rotation of the transmission main shaft.

In order to enable to enhance the understanding of the structural design and technology of the present utility model, I would like to cooperate with the drawings to further specify the following:

FIG. 1 is an exploded schematic diagram of a transmission structure of a conventional pneumatic tool.

Fig. 2 is a schematic diagram of the action relationship between the transmission spindle and the air cylinder of a conventional air tool.

Fig. 3 is an exploded schematic view of the transmission structure of the utility model pneumatic tool.

Fig. 4 is a schematic diagram of the overall structure of the pneumatic tool of the present invention.

Fig. 5 is a schematic diagram of the action relationship between the transmission spindle and the cylinder of the pneumatic tool of the present invention.

Please refer to the structural diagram of Fig. 3, the schematic diagram of structural relationship in Fig. 4 and the schematic diagram of action relationship in Fig. 5, the structural composition of the present utility model mainly includes a cylinder 31 built in a cylindrical outer shell 30, and a cylinder 31 is arranged in the center of the cylinder. An air chamber 32, in which a transmission spindle 35 with blades 37 is provided, the front end of the transmission spindle 35 is connected with another transmission rod 41 with a bearing 39 and a joint 40, and a clip is set at the front end of the transmission rod 41 The tool part 43 is assembled by the catch part 42 and endowed with a sleeve replacement function. The key point of the design is: the air chamber 32 of the cylinder 31 is arranged eccentrically, and an air inlet 33 is arranged on the thicker side of the wall of the cylinder 31, and the cylinder 31 The thinner side of the opposite wall of 31 is provided with an air outlet 34, and several slots 36 are inserted in the peripheral wall of the drive shaft 35 for inserting the blades 37, and a spring 38 is used to give the blades 37 a movable expansion and contraction margin. When the intake air of the cylinder 31 pushes the blade 37 of the transmission spindle 35 and brakes the rotation of the transmission spindle 35, the air chamber 32 of the cylinder 31 is in an eccentric state and cooperates with the expansion and contraction margin of the transmission spindle 35 blade 37, so that the transmission spindle 35 is The eccentric operation makes it produce better torsion performance to the transmission of the tool piece 43 .

In terms of the structural design of the present utility model, the air chamber 32 of the cylinder 31 is designed eccentrically, so when the air pipe 44 at the rear end of the cylindrical outer shell 30 passes the gas of the air compressor (not shown) from the air inlet of the cylinder 31 33 is introduced into the air chamber 32 and then discharged from the other side air outlet 34, the blade 37 of the transmission main shaft 35 is pushed together to make it rotate, and because the blade 37 has a movable expansion and contraction margin, the transmission main shaft 35 is When the air chamber 32 rotates, its blades 37 expand and contract with the rotation, and then the transmission spindle 35 rotates eccentrically, so that a larger torque can be obtained when the transmission tool part 43 is used, so that it can be operated better. practicality.

In addition, the utility model makes the relative design of the inlet and outlet ports 33, 34 of the cylinder 31, so that the air pressure can be led out by the air outlet 34 after the air inlet 33 is introduced into the pushing blade 37, and then passed through the rear exhaust system (not shown). Draw) discharge, forming a smooth circulation path.

From the above, it can be seen that the utility model utilizes the change of structural design to make its transmission spindle run eccentrically under the brake of the air pressure, so that the eccentric operation can obtain better torque performance in the transmission of the tool parts, so as to improve The conventional design lacks insufficient torque.

Claims (1)

1, a kind of pen type pneumatic tool, it mainly lies in the cylindrical case body (30) and installs a cylinder (31), establish an air chamber (32) in this cylinder (31), and in this air chamber (32), establish a transmission main shaft (35), and this transmission main shaft (35) perisporium is provided with several slots (36) and plugs for blade (37), and this transmission main shaft (35) leading section system is connected with a drive link (41) mutually with bearing (39) and joint (40), then establishes one in this drive link (41) leading section and presss from both sides the part (42) of pulling, and it is characterized in that:

The air chamber (32) of this cylinder (31) is eccentric the setting, is provided with air inlet (33) in the thicker sidewall of cylinder (31) wall, and the thin sidewall of cylinder (31) wall is provided with gas outlet (34), and this inlet, outlet (33,34) is oppositely arranged; In addition, this blade (37) is to be plugged among this slot (36) through spring (38).

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