JP3184485U - Vacuum pump - Google Patents

Abstract

A vacuum pump that can be operated by using rotation of an electric drill is provided.
A vacuum pump comprising a pump 2 for sucking air by rotation of a rotor and a motor 4 for rotating the rotor, a rotation shaft for transmitting rotation of the motor to the rotor, and an end of the rotation shaft And a drill insertion portion 42 into which the electric drill is inserted and a cap 44 that covers the drill insertion portion.
[Selection] Figure 1

Description

  The present invention relates to a vacuum pump.

  Conventionally, a vacuum pump has been used for evacuating the piping during the air conditioning installation work. An electric electric vacuum pump is usually used as the vacuum pump. The electric vacuum pump includes, for example, an apparatus main body having an intake port and an exhaust port, a rotor shaft that is rotatably supported by the apparatus main body via a bearing, and a rotor shaft that rotates eccentrically in a cylindrical rotor chamber of the apparatus main body. , A plurality of vanes slidably provided in the slide groove portion of the rotor, a motor that is a driving means connected to the rotor shaft, and the like. When power is supplied to the motor and the motor is rotated, the rotor shaft rotates and the rotor rotates, air is sucked in from the intake port by a plurality of vanes, and the sucked air is discharged from the exhaust port. Vacuuming can be performed.

  In the case of the electric vacuum pump as described above, it is necessary to connect the electric vacuum pump and the power source with a power cord, supply power from the power source to the pump, and drive the pump with a motor. Therefore, it is necessary to prepare a power source when working the vacuum pump. When the power source is not nearby, it is necessary to take measures such as using an extension cord or separately requiring a battery.

  The present invention solves such a problem of the vacuum pump, and an object of the present invention is to provide a vacuum pump that can be operated by an electric drill in addition to rotating the motor by electric power to operate the motor. And

  The present invention has been made to solve the above problems, and the gist of the invention is as follows.

  (1) A vacuum pump including a pump that sucks air by rotation of a rotor and a motor that rotates the rotor, and is formed at a rotating shaft that transmits the rotation of the motor to the rotor, and at an end of the rotating shaft. A vacuum pump comprising: a drill insertion portion into which an electric drill is inserted and a cap that covers the drill insertion portion in order to rotate the rotating shaft with the power of the electric drill.

  (2) In the configuration of (1), the drill insertion portion is exposed to the outside through the opening of the vacuum pump case, and the tip of the drill insertion portion is positioned on the case surface of the opening. A vacuum pump characterized in that the cap is fitted inside the opening to cover the drill insertion part.

  (3) In the configuration of (1) or (2), the cap includes a cap main body portion and an arm portion extending from the cap main body portion, and a distal end side of the arm portion is held by the case. A vacuum pump characterized by that.

  (4) In the configuration of (3), the cap is rotatable about a portion of the arm portion held by the case in a state where the cap body is removed from the drill insertion portion. A vacuum pump characterized by being held in a case.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum pump which can be operated also with an electric drill can be provided.

It is an external view of the vacuum pump of an embodiment. It is sectional drawing of the vacuum pump of embodiment. It is a figure which shows a connection part with the electric drill of the vacuum pump of embodiment. It is a figure which shows a connection part with the electric drill of the vacuum pump of embodiment. It is a figure which shows the cap of a connection part with an electric drill.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view of the vacuum pump 1 of the present embodiment. FIG. 2 is a cross-sectional view in the longitudinal direction of the vacuum pump 1 of the present embodiment. 3 and 4 are diagrams showing the connection portion 6 of the vacuum pump 1 of the present embodiment.

  The vacuum pump 1 of this embodiment is a rotary pump having a rotor that rotates in a case. The vacuum pump 1 according to the present embodiment has two types of methods: a method of supplying electric power to the motor and driving the motor (motor driving method) and a method of driving with the power of the electric drill (electric drill driving method). Can be operated.

  The vacuum pump 1 of the present embodiment is roughly divided into a pump unit 2, a motor unit 4, and a connection unit 6. Hereinafter, each part will be described in detail.

  First, the pump unit 2 is a pump for performing vacuum processing. The pump unit 2 is a two-stage pump including two rotors, for example. The pump unit 2 includes an intake port 10, a first rotor 12, a second rotor 14, an exhaust port 16, and the like.

  The air inlet 10 is connected to a pipe or the like, and air is sucked from the pipe through the air inlet 10 as the rotor rotates. The inlet 10 may be connected to the pipe to be processed by a hose or the like.

  The first rotor 12 and the second rotor 14 rotate to suck air from the intake port 10 and finally eject from the exhaust port 16. In the present embodiment, since the two-stage pump is used as described above, first, air is sucked from the intake port by the rotation of the first rotor 12, and the sucked air is drawn from the rotor chamber of the first rotor to the second rotor 14. Sent to the rotor room. Then, the air is discharged from the exhaust port 16 by the rotation of the second rotor 14.

  The rotor shaft 12a, which is the shaft of the first rotor 12, is connected to the motor shaft 20 of the motor at the end on the motor unit 4 side. When the motor shaft 20 is rotated by the rotation of the motor or the rotation of an electric drill described later, the rotor shaft 12a of the first rotor shaft 12 is rotated, and the rotor shaft of the second rotor 14 connected to the rotor shaft 12a is further rotated. Also rotates, the first rotor 12 and the second rotor rotate, and the pump operates.

  Next, the motor unit 4 is a drive source that rotates by the electric power supplied from the power source and rotates the two rotors of the pump unit 2. The motor unit 4 includes a motor shaft 20, a magnet 22, a rotor 24, a first bearing 26, a second bearing 28, a circuit unit 30, and the like. Electric power is supplied from the power cord 32 extending from the connecting portion 6 side. When power is supplied while the power switch 46 is ON, the rotor 24 rotates, and the rotation is transmitted from the motor shaft 20 to the rotor shaft 12a of the first rotor 12, and the two rotors of the pump unit 2 are moved. Rotate. The motor shaft 20 is supported by a first bearing 26 on the pump unit 2 side and a second bearing 28 on the connection unit 6 side which is the opposite side. The circuit unit 30 is an electronic circuit that controls the rotation of the motor.

  Next, the connection part 6 is a part which connects the electric drill which is one of the drive sources of the pump part 2 formed in the edge part by the side of the motor part 4 of the vacuum pump 1 of this embodiment. As described above, the vacuum pump 1 of the present embodiment has two types of driving: a motor driving system that drives the rotor of the pump by the motor unit 4 and an electric drill driving system that transmits the rotation of the electric drill to drive the rotor of the pump. The pump can be driven in this manner. When the pump is driven by the electric drill driving system, a bit of the electric drill is inserted and connected from the connecting portion 6 side. Then, by rotating the electric drill in this state, the motor shaft 20 can be rotated to drive the pump.

  The connecting portion 6 includes a case 40, a drill insertion portion 42, a cap 44, a power switch 46, and the like.

  The case 40 is a member that covers the circuit portion 30 and the drill insertion portion 42 that are disposed on the rear surface of the motor portion 2 (the end portion side opposite to the pump portion 2 side of the motor shaft 20). 1, 3, and 4, an opening 40 a is formed at a slightly lower position in the center of the case 40, and an electric drill can be inserted into the drill insertion portion 42 from the opening 40 a. It has become.

  As shown in FIGS. 1, 3, etc., the case 40 is preferably formed such that the surface on which the opening 40 a is formed is recessed with respect to the peripheral edge portion. Due to the depression, the cap 44 does not protrude from the end surface of the case 40 even when a cap 44 described later is attached to the opening 40 a. Thereby, when moving the vacuum pump 1 etc., it can prevent that the cap 44 gets caught in something or hits it.

  The power cord 32 is connected to the case 40. The power cord 32 may be detachably connected. In FIGS. 3 and 4, the portion to which the power cord 32 is connected is indicated by a broken line and is omitted for the description of the opening 40 a.

  The drill insertion part 42 is a part into which a bit of an electric drill is inserted. In the present embodiment, the drill insertion part 42 is fixed to one end of the motor shaft 20 of the motor part 4. The drill insertion portion 42 is fixed to one end of the motor shaft 20 with the rotation around the shaft being restricted, and the rotation of the electric drill is reliably transmitted to the motor shaft 20. The insertion port 42a into which the bit of the drill insertion portion 42 is inserted is a hole having a hexagonal cross section in accordance with the shape of the drill bit. The insertion port 42a is formed in the axial direction from the end surface of the drill insertion portion 42 toward the motor shaft 20 side. The size of the hole of the insertion port 42a may be formed in accordance with the size of a bit that is generally used. The drill insertion portion 42 is preferably made of a metal such as iron in order to reliably transmit the torque of the electric drill and to ensure durability.

  Further, as shown in FIG. 1, FIG. 2, etc., the drill insertion portion 42 is arranged so that the end surface thereof is located on the inner side of the opening 40 a (inside the case 40) than the position of the surface of the case 40. It is preferable. Since the tip of the drill insertion portion 42 is located inside the surface of the case 40, the drill insertion portion 42 is protected by the case 40, and the drill insertion portion 42 can be prevented from directly hitting an object. Since the drill insertion portion 42 is protected by the case 40, it is difficult to apply an impact to the motor shaft 20 and the rotor shaft of the pump, and deformation of the shaft can be effectively prevented.

  The cap 44 is a member that covers the opening of the case 40. The cap 44 of the present embodiment is press-fitted into the opening of the case 40 and fitted. The cap 44 of the present embodiment is preferably formed of an elastic material such as rubber or resin in order to prevent moisture or dust from entering from the opening. Note that the cap 44 may be fixed by a screw-in type or the like that is screwed into the opening 40a.

  Here, FIG. 5 is a diagram showing an appearance of the cap portion. The cap 44 of this embodiment includes a cap main body 44a and an arm 44b. The arm portion 44b extends from the cap main body portion 44a, and the distal end side is bent in a direction perpendicular to the upper surface of the cap main body portion 44a (a surface parallel to the surface of the case 40). A portion beyond the bent portion is an insertion portion 44 c to be inserted into the case 40. The distal end portion 44d at the distal end of the insertion portion 44c is formed larger than the diameter of the opening portion on the case 40 side into which the insertion portion 44c is inserted so as not to come out of the case 40. The cross-sectional shape of the insertion part 44c is circular, and the opening part of the case 40 into which the arm part 44b is inserted is also circular. The length from the bent portion of the arm portion 44b to the distal end portion 44d is such that the entire cap main body portion 44a extends from the end surface of the opening portion 40a (the recess of the case 40) from the state where the cap main body portion 44a is fitted into the opening portion 40a. Preferably, it is formed with a length that can be pulled out to the outside of the surface of the outer portion.

  With the above configuration, when connecting the electric drill to the drill insertion portion 42, the cap main body 44 a fitted in the opening 40 a is pulled out and removed from the opening 40 a, and then the cap 44 is removed from the surface of the case 40. The cap main body 44a can be shifted from the position of the drill insertion portion 42 by rotating around the insertion portion 44c in parallel. Even if the cap main body 44a is removed from the opening 40a, the tip 44d does not come out of the case 40, so that the cap 44 is held in the case 40 without falling off. Therefore, the cap 44 can be easily opened and closed, and the cap can be prevented from being lost.

  The above-described configuration of the arm portion 44b of the cap 44 is an example. For example, when the cap 44 is formed of a member having elasticity such as rubber, the length from the bent portion of the arm portion 44b to the distal end portion 44b may be shorter than the above-described length. Even in this case, the cap 44 can be similarly rotated and opened while the arm 44b is deformed by the elasticity of rubber.

  The power switch 46 is a switch for switching ON / OFF of power supply to the vacuum pump 1. When power is supplied via the power cord 32 to drive the motor, the power cord 32 is connected to the power source and the power switch 46 is turned on.

  The above is the vacuum pump 1 of this embodiment. According to the present embodiment, the pump can be driven by operating the motor with electric power, or the pump can be driven with the electric drill, so the power source of the pump can be selected according to the work environment. . Therefore, the vacuuming operation can be performed even in a place where a power source cannot be secured.

  Moreover, in the vacuum pump 1 of this embodiment, the drill insertion part 42 which inserts an electric drill can be covered with the cap 44. FIG. Therefore, when the electric drill is not connected, it is possible to effectively prevent dust and moisture from entering the pump through the drill insertion portion 42 by attaching the cap 44. Therefore, it is possible to provide a vacuum pump having excellent durability even when the drill insertion portion 42 is provided to enable driving with an electric drill.

  Moreover, the vacuum pump 1 of this embodiment is hold | maintained so that a cap 44 can slide, rotating with respect to the opening part 40a which inserts an electric drill with the arm part 44b. Therefore, the cap 44 is not lost, and the cap 44 can be opened and closed more easily. By attaching the cap 44 at all times when the electric drill is not connected, such as attaching the cap 44 immediately after removing the electric drill, it is possible to more reliably prevent dust and moisture from entering the inside. it can.

  In addition, in this embodiment, although the drill insertion part 42 was demonstrated as what is fixed to the motor shaft 20, it is not restricted to this. For example, the motor shaft 20 may be extended as it is, and an insertion port into which a bit of an electric drill is inserted may be formed at the tip thereof.

  Moreover, in this embodiment, although the insertion part 44c of the cap 44 is rotatably inserted in the case 40 on the lower side of the cap main body 44a, the position to be fixed is not limited thereto. For example, the insertion part 44c may be inserted into the case 40 and held by the case 40 at a position beside or above the opening 44a.

  In the present embodiment, the vacuum pump 1 is described as a two-stage pump, but the present invention is not limited to this. A one-stage pump having only one rotor may be used.

  Moreover, although the vacuum pump 1 of this embodiment can be used for evacuation of the piping of an air-conditioner, it cannot be overemphasized that it can be used for various other operations which perform vacuum processing.

  Although the present invention has been described in detail according to particular embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

DESCRIPTION OF SYMBOLS 1 Vacuum pump 2 Pump part 4 Motor part 6 Connection part 40 Case 42 Drill insertion part 44 Cap

Claims (4)

A vacuum pump comprising a pump for sucking air by rotation of a rotor and a motor for rotating the rotor;
A rotating shaft for transmitting rotation of the motor to the rotor;
A drill insertion part that is formed at an end of the rotary shaft and inserts an electric drill to rotate the rotary shaft with the power of the electric drill;
A cap that covers the drill insertion portion;
A vacuum pump comprising: The drill insertion part is exposed to the outside through the opening of the case of the vacuum pump, and the tip of the drill insertion part is located inside the position of the case surface of the opening,
The vacuum pump according to claim 1, wherein the cap covers the drill insertion portion by being fitted into the opening.   3. The vacuum pump according to claim 1, wherein the cap includes a cap main body portion and an arm portion extending from the cap main body portion, and a distal end side of the arm portion is held by the case. . The said cap is hold | maintained at the said case so that rotation is possible centering | focusing on the part currently hold | maintained at the said case of the said arm part in the state in which the said cap main body was removed from the said drill insertion part. Item 4. The vacuum pump according to Item 3.

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