JPH0421024Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an air pump equipped with a vibration-proofing function.

(Conventional device) The air pump shown in Figure 1 was developed earlier by the inventor of this idea, and has a support mechanism installed inside the casing 1, which supplies a tank T for temporarily retaining compressed air and a tank T for temporarily retaining compressed air. The main body P of the pump is supported.

The support mechanism has four pillars 3 made of hard rubber or the like erected on the bottom 2 of the casing 1, and support pieces 4 made of an elastic body are provided at the upper part between the pillars 3 facing each other. The pump main body P is supported by a support piece 4 provided on the upper part of the support column 3, and the tank T is supported at an intermediate position.

The compressed air discharged from the pump body P is once supplied to the tank T via the pipe 5, and the compressed air accumulated in the tank T flows out from the outflow port 6 provided in the tank T. It is supplied to an actuator (not shown), and the tank T functions to absorb the pulsation of the main body P of the pump.

(Problems to be solved by the present invention) According to this device, since the pump main body P is levitated by the four pillars 3, vibration can be prevented, but the mechanism is complicated. It was hot. In particular, since the main body of the pump and the tank must be attached to the support column 3 in a floating state, there is a problem in that the work becomes extremely difficult.

The purpose of this invention is to provide a device in which the tank itself has the function of supporting the pump body, simplifying the overall mechanism, and absorbing the pulsations and vibrations of the pump body.

(Means for solving the problem) This idea is based on an air reservoir tank that has a flat top surface and a variable capacity type that can expand upwards and has a flat area that can support the main body of the pump over the entire area. The main body of the pump is placed on the tank, and an air inlet and an air outlet are formed in the tank, and the air outlet of the pump body and the air inlet of the tank are connected to each other. The feature is that it is connected with a flexible hose.

(Operation of this invention) Since this invention is constructed as described above, the air discharged from the pump main body temporarily stays in the tank main body via the elastic hose, and is supplied from there to the actuator. . In this tank, the upper opening of the tank body is closed with a flexible material such as a diaphragm or a slidable hard material, and the main body of the pump is placed on this lid body. moves up and down depending on the pressure inside the tank body. Therefore, this tank functions like an accumulator and absorbs the pump-based pulsations.

Furthermore, since the main body of the pump is placed on the lid, the pressure inside this tank acts as a cushion.
It also absorbs vibrations mainly caused by the pump. Moreover, the pressure inside the tank body acts evenly on the lid, and the levelness of the surface of the lid becomes more stable, so that the main body of the pump can be stably supported.

(Embodiment of the present invention) In the first embodiment shown in FIG. 2, the tank T is directly installed on the bottom 11 of the casing 10, and the upper surface of the tank body T' is covered with a flexible material such as a diaphragm. It is covered with a lid body 12 made of wood.

A pump main body P is placed on top of the lid 12, and the air discharge port of the pump main body P and the air inlet of the tank T are connected to an extendable and retractable body partially formed of a bellows or the like. It is connected via a hose 13.

Then, when the compressed air discharged from the pump body P flows into the tank T and is stored there,
Since the lid body 12 expands, the pump main body P,
It will rise to the specified position. In other words, the lid 12 expands until the load on the pump main body P and the pressure action within the tank main body T' are balanced. Therefore, this tank T functions in the same way as an accumulator, and when the pressure inside the tank T becomes low, the lid 12 contracts, and when the pressure rises, the lid 12 expands. Moreover, since the pump main body P and the tank T are connected by the elastic hose 13, the elasticity of the hose 13 and the tank T combine to enhance its function as an accumulator.

Moreover, since the pressure action within the tank T also functions as an air action, vibrations of the main body of the pump P can also be absorbed by this air action.

The compressed air accumulated in the tank T as described above is supplied to an actuator (not shown) via the outflow port 14 provided in the tank body T'.

In this first embodiment, since the telescopic hose 13 and the tank T work together to fully function as an accumulator, most of the pulsation of the main body P of the pump can be absorbed. Moreover, since this tank T also functions as an air action, vibrations of the main body P of the pump placed on the lid 12 of this tank T can also be absorbed.

Since the pulsations and vibrations of the pump main body P can be absorbed in this way, the generation of noise caused by these pulsations and vibrations can also be prevented.

Furthermore, the pressure acting on the entire inside of the lid 12 is equal, and the horizontality of the surface of the lid 12 is stabilized accordingly, so that the pump main body P can be stably supported.

Note that if this tank T is provided with a relief valve or a safety mechanism in its place, the expansion of the lid 12 can always be kept constant. In other words,
The positional relationship of the pump main body P can always be kept constant. In this case, for example, the set pressure of the relief valve must be determined by comprehensively considering the weight of the pump body P and the required pressure of the actuator.

The second embodiment shown in FIG.
A lid body 15 formed of a hard material 5a is slidably placed over the tank body T' to cover the upper surface of the tank body T, and the pump body P is placed on top of this lid body 15. It is location. When the pressure inside the tank T is zero, the lid 15 is lowered to a position where the hanging piece 15a contacts the bottom of the tank body T'.

The pump main body P and the tank T communicate with each other via a telescopic hose 13, and the tip of the hose 13 on the tank T side is connected to the lid body 1.
5 and communicates with the tank body T'.

Further, the outflow port 16 formed in the tank body T' is closed by the hanging piece 15a of the lid 15 when the lid 15 of the tank T is in the lowered position, but until the lid 15 reaches a predetermined position. When raised, the hanging piece 15a passes through the position of the outflow port 16, so the outflow port 16 opens. The height position of the lid body 15 when the outflow port 16 is opened is set to be the desired height of the pump main body P.

In this second embodiment, the compressed air discharged from the pump main body P once flows into the tank T via the hose 13. At this time, the outflow port 16
If it is closed, the pressure inside the tank T will rise, and the lid 15 will rise until the outflow port 16 opens. When the lid 15 rises and the outflow port 16 opens, the pump main body P is maintained at a predetermined height, and the compressed air in the tank T flows out from the outflow port 16 and is supplied to an actuator (not shown). be done. Therefore, in this second embodiment as well, the tank T and the extendable hose 13 also function as an accumulator, as in the first embodiment. Further, when the tank T is filled with compressed air, the tank T itself functions as an air action, as in the first embodiment.

Also in this second embodiment, if a relief valve is connected to the tank T, the height position of the lid body 15, that is, the height position of the pump main body P, can be adjusted as follows.
It can always be kept constant. However, this second
In the embodiment, the periphery of the tank body T′ and the hanging piece 15
If the dimensions of the gap (fitting intersection) with a are set appropriately, the height position of the pump body P can be kept constant while releasing some compressed air from this gap, so in this case, The above relief valve becomes unnecessary.

(Effects of the present invention) In this invention, the main body of the pump is placed on the top surface of the tank as described above, so there is no need for a conventional member such as a support to support the main body of the pump.
This simplifies the mechanism and eliminates the troublesome work of floating the pump and tank while attaching them to the support.

In addition, the tank itself is of a variable capacity type, with its upper surface covered with a slidable lid made of a flexible or hard material such as a diaphragm, so that the tank itself functions as an accumulator. . Moreover, since the main body of the pump and the tank are connected by a flexible hose, its function as an accumulator is greatly enhanced in conjunction with the tank. Therefore, the pulsation mainly caused by the pump can be reliably absorbed by the tank and the expandable hose.

Furthermore, since the tank also functions as an air action, it is possible to absorb the vibrations of the main body of the pump placed on the tank.

In this way, since the pulsations and vibrations of the pump can be reliably absorbed, the generation of noise caused by these pulsations and vibrations can also be prevented.

Moreover, the flat top surface of the tank not only allows the pressure inside the tank to act evenly, but also supports the pump main body with the entire top surface of the tank, making it possible to maintain the levelness of the pump main body at all times. , the main body of the pump can be stably supported.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional air pump, FIG. 2 is a sectional view showing a first embodiment of this invention, and FIG. 3 is a sectional view showing a second embodiment. T...tank, T'...tank body, 12...
A lid body consisting of a diaphragm etc., P...pump main body, 13...extensible hose, 15...lid body.

Claims (1)

[Scope of utility model registration request] The air reservoir tank is formed into a variable capacity type that can expand upwards and has a flat top surface and a flat area that can support the pump main body over the entire area, and the pump main body is attached to the tank. Place it on top.
In addition, the air pump has an air inlet and an air outlet in the tank, and the air inlet of the pump itself and the air inlet of the tank are connected with a flexible hose to provide vibration isolation.