JPH07310666A - Portable air compressor - Google Patents

Abstract

PURPOSE:To prevent missing of a cover part during use and carriage by a method wherein a pump unit is fixed in a case, a hose containing part to contain a hose having one end connected to the unit is placed in the case, and an openable door-form cover part is arranged at the opening part of the hose containing part. CONSTITUTION:A portable air compressor used for spraying and coating with liquid has a case 1 the interior of which is partitioned into a pump containing part 2 to contain a pump unit 4 and a hose containing part 3 to contain a collected hose 5 by a partition wall 11. A door-form cover part 6 is openably arranged at the opening part 31 of the front of the hose containing part 3. A U-shaped repulsion part 71 located at the upper end part of the cover part, a lock claw 72 engaged with the peripheral wall of the opening part 31, and a hook part 7 having an operation part 73 to release engagement by pressing are integrally formed at the cover part 6, which is disengageable from the opening part 31. A vent hole 9 is formed in the lower part of the cover part 6 and a hose take-out hole is formed in the outer peripheral wall of the hose containing part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable air compressor used for spraying liquid or painting. More specifically, the present invention relates to a portable air compressor in which a pump unit that discharges compressed air is fixed in a case, and a hose accommodating portion capable of accommodating a hose whose one end is connected to the pump unit is provided in the case.

[0002]

2. Description of the Related Art Conventionally, in this type of portable air compressor, a structure in which a case has a hose accommodating portion is disclosed in Japanese Patent Application Laid-Open No. 1-244183. In the above publication, a detachable lid portion is provided at the opening of the hose storage portion. However, since the lid is separable from the case body, it is easily detached due to a shock during carrying or is easily lost due to careless storage during use.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and provides a portable air compressor that does not lose the lid of the hose storage portion during use or carrying. It is what

[0004]

According to the present invention, a hose accommodating portion 3 for accommodating a hose 5 having a pump unit 4 for discharging compressed air fixed in a case 1 and having one end connected to the pump unit 4 is provided. The portable air compressor provided in the case 1 is provided with a door-like lid 6 that can be opened and closed in the opening 31 of the hose storage 3.

In the above structure, it is preferable that the outer peripheral wall of the hose housing 3 or the lid 6 is provided with the hose take-out hole 8 communicating with the opening 31 of the hose housing 3.

In the above structure, it is preferable to provide the cover portion 6 with the ventilation hole 9.

[0007]

The lid 6 which is openable and closable is provided in the opening 31 of the hose housing 3 so that the lid 6 is always held by the case 1 main body. Therefore, the lid 6 is not lost when being carried or used.

Also, the outer peripheral wall of the hose storage portion 3 or the lid portion 6
The hose 5 can be taken out from the hose taking-out hole 8 by providing the hose taking-out hole 8 communicating with the opening 31 of the hose receiving part 3, and the lid 31 closes the opening 31 of the hose receiving part 3. The air compressor can be used in the closed state. Thereby, the lid portion 6 is used at the time of use.
Since there is no protrusion to the outside, there is no risk of damaging the lid 6 itself or injuring a human body by the protruding lid 6.

Further, by providing the vent hole 9 (heat dissipation hole) in the lid portion 6, it is possible to prevent the temperature inside the hose housing portion 3 from rising due to the heat transmitted from the pump unit 4. As a result, the temperature in the vicinity of the discharge hole 44 is not excessively raised, and it is possible to suppress the occurrence of drain (condensation caused by a temperature difference) in the hose 5 outside the case 1.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

The case 1 is made of two plastic injection-molded bodies, and they are assembled so as to face each other. Inside the case 1, a pump housing 2 for housing the pump unit 4 and a hose housing 3 for housing the concentrated hose 5 are formed separated by a partition wall 11. A handle 12 is integrally formed on the top of the case 1.

A plurality of plate-shaped ribs 21 are provided on the inner wall of the pump housing portion 2, and the outer periphery of the pump unit 4 is clamped and fixed by the ribs 21. An elastic body 22 (for example, chloroprene rubber, urethane rubber, etc.) is provided between the rib 21 and the partition wall 11 and the outer periphery of the pump unit 4.
Is interposed, and thereby rattling of the pump unit 4 is prevented, and reliable fixing is possible. Further, the elastic body 22 absorbs vibration when the pump unit 4 is driven and reduces noise.

The pump unit 4 includes a motor 41
And a pump 42 driven by rotation of the motor 41
And are assembled together. The pump 42 is
It is equipped with an intake / exhaust operation mechanism having a piston, a diaphragm, a bellows, or the like which is operated by rotation of the motor 41, and sucks outside air,
Compressed air is discharged from 4.

At the top of the pump 42, a nozzle 43 having a discharge hole 44 is projected. The nozzle 43
Is projected from the pump housing 2 through the partition wall 11 to the hose housing 3. Further, one end of the hose 5 is fitted on the nozzle 43. In addition, the nozzle 43
Even if it protrudes inside the hose storage portion 3, it does not protrude outside the case 1. That is, the nozzle 43 is
Since it is surrounded by the outer peripheral wall of the hose accommodating portion 3, the nozzle 43 is prevented from being damaged when it is used or carried.

Since the hose 5 is made of an elastic material,
The hose can be easily stored in the hose storage section 3 by rolling it up or bending it. A connecting member 51 for connecting to an airbrush or the like is attached to the other end of the hose 5.

An opening 31 is provided on the front surface (right end in FIG. 1) of the hose storage portion 3. The opening 31 is provided with a door-like lid 6 that can be opened and closed.
In the present embodiment, the lid 6 has an open door shape in which the lower portion is pivotally attached, but in addition to this, a sliding door-like configuration is also effective.

The lid portion 6 is made of a plastic material and has a hook portion 7 integrally formed on the upper end thereof. The hook portion 7 is integrally formed with a U-shaped resilient portion 71, a locking claw 72 that engages with the peripheral wall of the opening 31, and an operation portion 73 that releases the engagement by pressing. .

A vent hole 9 is provided in the lower portion of the lid 6 (that is, near the nozzle 43). The ventilation hole 9 is provided with a plurality of grids in a horizontal stripe pattern, which prevents dust from entering the hose storage portion 3.

Outer peripheral wall of the hose housing 3 (here, the opening 3
Notch-shaped hose take-out holes 8 communicating with the opening 31 are provided at two locations on one peripheral wall). Although the hose take-out hole 8 can be provided in the lid portion 6, it is preferable to provide it in the outer peripheral wall of the hose storage portion 3 as shown in FIG. 3 because the opening / closing operation of the lid portion 6 can be smoothly performed.

Further, the position of the hose take-out hole 8 is set at the nozzle 4
3 and the position shifted in the horizontal direction or the vertical direction (that is, the hose extraction hole 8 position and the nozzle 43 position are not in the shortest distance). As a result, when the hose 5 is pulled, the hose 5 is pressed against the inner wall of the hose extraction hole 8, so that the nozzle 4
The hose 5 does not come off from 3. Besides, the ventilation holes 9
The heat radiation effect does not keep the inside of the hose housing 3 in a high temperature state, so that the fitting between the hose 5 and the nozzle 43 is prevented from loosening.

In this embodiment, since the pump output is low (specifically, about 1 kgf / cm ² ), the amount of drain generated is small even under high humidity conditions. In addition to that,
Due to the configuration in which the vent portion 9 is provided in the lid portion 6, the effect of preventing the temperature rise in the vicinity of the discharge hole 44 of the pump unit 4 inside the hose housing portion 3 is suppressed, and an increase in drain generated inside the hose 5 outside the case 1 is suppressed. To be

[0022]

Since the hose storage portion is provided with the door-like lid portion which can be opened and closed, the lid portion is not lost when being carried or used.

In addition, on the outer peripheral wall of the hose housing or the lid,
By providing the hose outlet that communicates with the opening of the hose housing, the air compressor can be used with the opening of the hose housing closed by the lid. As a result, since the lid does not project outside during use, there is no risk of damaging the lid itself or injuring a human body by the projected lid.

In addition, by providing the cover with ventilation holes,
Even when the lid is closed, the temperature in the vicinity of the discharge hole of the pump unit inside the hose housing does not rise to a high temperature, so the occurrence of drain is suppressed.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of the present invention before use.

FIG. 2 is an enlarged cross-sectional view of a main part of the use state of the present invention.

FIG. 3 is an enlarged front view of the present invention.

FIG. 4 is a perspective view of the present invention.

[Explanation of symbols]

 1 Case 11 Partition Wall 12 Handle 2 Pump Storage 21 Rib 22 Elastic 3 Hose Storage 31 Opening 4 Pump Unit 41 Motor 42 Pump 43 Nozzle 44 Discharge Hole 5 Hose 51 Connecting Member 6 Lid 7 Hook 71 Starting part 72 Locking claw 73 Operating part 8 Hose extraction hole 9 Vent hole

Claims (3)

[Claims] 1. A pump unit (4) for discharging compressed air.
Is fixed in the case (1), and the pump unit (4)
A portable air compressor having a case (1) in which a hose (3) having one end connected to a hose (5) can be stored, the opening (31) of the hose storage (3) being openable and closable. A portable air compressor having a door-shaped lid (6). 2. A hose outlet (8) communicating with the opening (31) of the hose storage (3) is provided in the outer peripheral wall or lid (6) of the hose storage (3). The portable air compressor according to claim 1. 3. The portable air compressor according to claim 1, wherein the lid portion (6) is provided with a ventilation hole (9).