JP3228584U - Manual spraying device with material inlet passages on both sides to replace and install material supply equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manual spraying device capable of connecting a material supply device to the side and being used by a right-handed person and a left-handed person in the same manner. SOLUTION: A manual spraying device 1 is an air-mixed spray type paint spray gun. The spraying device 1 includes at least a main body 2 in which the handle 4 protrudes from the lower surface 3, a nozzle device 5 attached to the front surface 6 of the main body 2 for spraying a spray liquid, particularly a coating material, and a material. A first and second material inlet passages for fluidly connecting the supply device to the nozzle device 5 are provided. The main body 2 has an upper surface 10 on the side opposite to the lower surface 3 and two side surfaces facing each other, and these side surfaces connect the upper surface 10 and the lower surface 3, respectively, and the first material inlet passage 7 is It is formed on one side surface of the main body 2, and the second material inlet passage is formed on the other side surface of the main body 2. [Selection diagram] Fig. 1

Description

The present invention relates to a manual spraying device, particularly a paint spray gun, preferably a compressed air spray paint spray gun, as described in claim 1.

The above type of spraying device in the form of a manual paint spray gun is disclosed, for example, in Patent Document 1. Known paint spray guns are so-called side container type paint spray guns. This paint spray gun allows the paint container to be placed on the side of the paint spray gun so that the user's view is approximately parallel to the material jet and above the paint spray gun. It has the advantage of not being blocked by the connected paint container. In particular, the spraying device known by Patent Document 1 is a paint spray gun formed for use with the left hand of the user. For this purpose, the body has a material inlet passage on the right side when viewed from the front towards the nozzle device on the front side of the paint spray gun.

Such paint spray guns are formed favorably for left-handed people to operate, but have the disadvantage that they are not very suitable for operation by the user's right hand, i.e., right-handed people.

U.S. Patent Application Publication No. 2014/0312146A1

An object of the present invention is to provide a paint spray gun in which a material supply device can be connected laterally and can be used by both right-handed and left-handed people alike.

In order to solve this problem, a spraying device having the characteristics of claim 1, preferably a paint spray gun, preferably an air-mixed spray type paint spray gun is proposed.

The spraying device comprises at least one body, preferably with a handle protruding from the bottom surface. A nozzle device for spraying a spray liquid, preferably a coating material, is provided on the front surface of the main body. The main body has an upper surface on the opposite side of the lower surface. The upper surface and the lower surface of the main body are connected by two side surfaces facing each other. This side surface has a first material inlet passage on one side of the body and a second material inlet passage on the other side opposite the body for alternating connection of material supply devices. ..

With the above structure, both right-handed and left-handed people can use the paint spray gun. To do this, simply remove the side container from the left or right side of the paint spray gun and attach it to the opposite side. In this case, the right side of the paint spray gun is the side with the side facing the back of the user's hand when using it with the right hand as specified. The left side of the paint spray gun is the opposite side, which is towards the thumb, and thus near the user's body, when used as prescribed with the right hand. When used by left-handed people, the left side of the paint spray gun is in the direction indicated by the back of the user's hand. The right side of the paint spray gun is on the user's thumb or almost on the body.

Further, in the present invention, the lateral material supply device can be comfortably rearranged from one side to the other side of the paint spray gun.

Another advantage of the paint spray gun according to the present invention is that the production of a right-handed side container type paint spray gun and the production of a left-handed side container type paint spray gun do not require different work steps. ..

Further, according to the above embodiment, two material supply devices, particularly side containers, can be attached to the paint spray gun at the same time. In this case, the material supply device can be attached to both sides of the spray device. In this case, moreover, different spray liquids can be supplied to the paint spray gun depending on both material supply devices. This spray is mixed in a paint spray gun.

The present invention preferably relates to an air spray paint spray gun. In particular, the material nozzle of the nozzle device is surrounded by an annular gap, which is fluid connected to a fluid source for the spray medium. When the sprayer operates with compressed air, the compressed air forms a spray medium. A gaseous medium other than compressed air can also be used as the spray medium. The paint spray gun also includes a discharge unit that controls the discharge of the spray medium or the required compressed air in addition to the discharge of the spray liquid.

In order to prevent the material from being released before the spray medium exits the annular gap, preferably the spray medium first flows into the annular gap and then the material nozzle is opened only after the ejection unit is operated. The flow of the spray medium in the annular gap creates a negative pressure around the material nozzle. In addition to the gravitational effect, this negative pressure carries the material to be sprayed from the container to the material nozzle and then out of the material nozzle. After exiting, the material is sprayed in the form of large amounts of small particles by the compressed air generated in the annular gap. The particles form a directed material jet, which is directed away from the sprayer and directed at the workpiece to be coated.

The body of the sprayer is preferably a forged metal part. This metal part may be cast or made of another metal. For weight reasons, aluminum alloys are preferably used.

The side of the paint spray gun that connects both sides to each other and is located on the opposite side of the grip is called the top surface of the paint spray gun. The lower surface is the side of the paint spray gun that is on the opposite side of the upper surface and connects both sides to each other. The grip is in direct contact with the bottom surface or extends from the bottom surface to the ground when used as specified.

A handle is connected to the main body. The handle is preferably formed integrally with the main body. The handle has sides as well. This side is directly connected to the side of the body. Further, the plane on the side surface of the main body and the plane on the side surface of the handle are preferably substantially the same. The surfaces of the handle and the body that connect to each other form the sides of the sprayer.

The nozzle device is mounted on the front surface of the spraying device according to the present invention. When the user holds the sprayer by hand, the front of the sprayer is away from the user. The front surface connects both sides and the upper and lower surfaces of the paint spray gun to each other.

When operating the spray device, the spray jet of the spray material to be sprayed flows out at the nozzle device. In this case, the spray jet is directed away from the user. The spray jet determines the spray direction. This spraying direction is directed away from the user along the spray jet and towards the workpiece coated by the spraying device when used according to the regulations of the spraying device.

The nozzle device can be formed in various forms depending on the type of spraying device. A square air nozzle or a control nozzle is preferably provided.

The spray liquid is generally a coating material such as a lacquer or paint. However, the coating material may be a food such as sugar coating. The food is coated with this sugar coating. In addition to the liquid medium used for coating, solid media can also be used. This solid medium exists in powder form or is initially solid and is liquefied by heating.

The material inlet passage in the main body has a function of fixedly connecting one or more material supply devices to the main body and forming a liquid-tight connection portion between the material supply device and the material outlet of the material nozzle.

In an advantageous embodiment, both material inlet passages are guided from the sides of the sprayer towards the central plane. In this case, the central plane is preferably in the center between the sides of the sprayer. Both material inlet passages merge with the central material passage within the central plane. This central material passage is guided towards the material nozzle in the sprayer. The material nozzle can be closed by the material needle. The material needle is arranged substantially coaxially with the material nozzle and the central material passage, and is guided through the main body along the central plane.

The material passage preferably tapers to a smaller diameter in the spraying direction after connecting with the material inlet passage. After the material passage has narrowed, the passage only serves to guide the material needle and no longer guides the spray liquid. Therefore, after the material passage is narrowed, the spraying direction is called the needle guide passage. The needle guide passage must be sealed against the passage that guides the spray liquid to prevent the spray liquid from entering the needle guide passage. Therefore, a seal is provided between the material needle and the narrowed material passage in the needle guide passage after the intersection of the material inlet passage and the material passage in the spraying direction.

The present invention also relates to so-called airless or airmix paint spray guns. This spray gun does not have an annular gap for spraying the material and sprays the material at high material pressure.

In the case of the modifications of the present invention, the material supply is performed by a hose. This hose is connected to a pressure vessel or high pressure pump and produces material pressures above 100 bar. The spray liquid is guided into the paint spray gun, guided out from the paint spray gun by a so-called single substance type pressure nozzle, and becomes fan-shaped depending on the shape of the nozzle outlet. Shear force is generated by the interaction with the ambient air. By the action of this shearing force, fine spraying of the spray liquid is achieved.

In the case of a variant of the present invention in the form of an air mix paint spray gun, as in the case of an air spray paint spray gun, it affects the spray jet, similar to an air spray paint spray gun. , A square air nozzle or a control nozzle is preferably provided depending on the model.

In the case of the variant of the present invention in the form of an airless paint spray gun, no compressed air supply is provided. Therefore, the airless paint spray gun supplies only the spray liquid. After the spray liquid is ejected from the material nozzle, the effect of the spray jet by the angular air nozzle or control nozzle no longer occurs. In the case of this deformation, the forming of the spray jet is performed only by the shape of the outlet range of the material nozzle. This outlet range is preferably formed in a slit shape in both the case of the airless type paint spray gun and the case of the air mix type paint spray gun.

The spraying device preferably comprises at least one material feeding device specifically formed as a pouring container. In this case, the material to be sprayed is guided into the paint spray gun through a liquid-tight passage by the action of gravity, where it is guided to the nozzle device, especially the material nozzle. The spray liquid comes out of the material nozzle. In other embodiments, the material supply device is formed as a hanging container or material supply hose.

Unlike the pouring container, the hanging container is provided on the lower surface of the paint spray gun. In this case, the spray liquid is carried to the material nozzle by a suction action. The suction action is generated, for example, by the negative pressure around the material nozzle as the spray medium exits the annular gap. Such a hanging container can also apply pressure to assist the suction action. This pressure causes the spray liquid to be carried to the material nozzle via a suction tube that reaches the bottom of the suspension container.

The material supply hose is connected to the material reservoir. This material reservoir is, for example, under pressure so that the spray liquid is guided through a hose to the spray device.

The material supply device is basically fluidly connected to the nozzle device or the material outlet of the material nozzle by a first or second material inlet passage in the operating state, regardless of its structure. In this case, the fluid connection is preferably formed so that the material does not flow out of the fluid guide range, except at the outlet of the material nozzle.

The ability to selectively mount the material supply device on the left or right side of the spray device allows the spray device to be used by both right-handed and left-handed people. For that purpose, the material supply device need only be changed from one side of the spraying device to the other side.

If the material supply device is a material supply hose, the alternation on the connecting side also helps to adapt to spatial conditions. For example, when the material supply hose is attached to one side of the sprayer, it is annoying if the material reservoir is located on the opposite side of the sprayer.

In an advantageous embodiment, a control valve, preferably a circular jet / wide jet type control valve, is provided. This control valve is adjustable by a first control element and a second control element. In this case, the first adjusting element is on one side of the body and the second adjusting element is on the opposite side of the body. By providing adjustment elements on both sides of the sprayer, the user can adjust with the hand holding the sprayer, regardless of whether the sprayer is held with the right or left hand. The valve can be operated. Therefore, there is no need to change hands. This allows both right-handed and left-handed people to operate the control valve while driving.

In order to affect the shape of the outflow material jet, the spraying device according to the present invention preferably additionally comprises different control nozzles and angular air nozzles. The control nozzle and the angular air nozzle compress a material jet having a substantially circular cross section into an oval cross section. This is achieved especially by the angular air nozzle. The angular air nozzle is located in a so-called angular portion protruding from the nozzle device toward the material to be sprayed. The horns are arranged along a circular orbit around the material nozzle away from the material nozzle.

An advantageous variant of the present invention formed as a compressed air spray paint spray gun is provided with two horns. Both square portions are provided on both sides of the material nozzle. In this case, each square portion may include one or more square air nozzles. In order to properly affect the material jet, the angular nozzle is oriented away from the paint spray gun at an angle formed along the axis of the material nozzle. This arrangement structure compresses the originally round material jet into an oval cross section. Further, similarly, a control nozzle that positively affects the jet flow can be additionally provided.

Depending on the field of use, a circular jet or an elliptical material jet is required. Therefore, in an advantageous modification of the spraying device according to the present invention, a control valve is provided. This control valve preferably can control the fluid flow out of the horns. When the fluid flow to the angular air nozzle is blocked by a regulating valve, especially a circular jet / wide jet type regulating valve, the original circular material jet is unaffected and the cross section remains circular. As the fluid flow through the angular air nozzle increases, the original circular jet is increasingly compressed into an elliptical or oval cross section. This is advantageous in many applications. In this case, the material jet is directed so that the short elliptical axis of symmetry is approximately parallel to the connecting axis of the angular air nozzle.

To facilitate the operation of the paint spray gun by the user, the circular jet / wide jet control valve is formed so that the user can adjust the valve and hold the paint spray gun by hand. There is. To this end, the valve is attached to the paint spray gun so that when the paint spray gun is held by hand, the valve is on the side facing the user's body and can be operated with the thumb.

The circular jet / wide jet control valve is preferably formed so that a pressure distribution chamber is provided in the main body. The spray medium is supplied to this pressure distribution chamber via an inflow pipe in the handle. The pressure distribution chamber is connected to at least one spray tube and at least one control tube. The spray tube is fluidly connected to the annular gap of the nozzle device surrounding the material outlet nozzle. The control tube is fluidly connected to at least one angular air nozzle in the nozzle device. Further, a control valve protruding into the pressure distribution chamber is provided. The control valve is formed so that the flow rate of the spray medium flowing from the pressure distribution chamber to the spray pipe and the flow rate of the spray medium flowing from the pressure distribution chamber to the control pipe can be adjusted at least for each region.

The control valve projects through the body of the sprayer and is connected to one control element each within the range of both sides of the spray device or body, the control valve being operable by both control elements. Both adjusting elements are located within the lateral range that can be reached with the thumb during the prescribed operation of the spraying device. Thereby, the control valve can be operated with either the thumb of the right hand or the thumb of the left hand when the spraying device is held by the associated hand.

It is highly advantageous that each material inlet passage is equipped with one connection accommodating device for connection with the material supply device. The connection accommodating device is preferably a female thread. A sealing surface that extends within the material inlet passage and extends circumferentially with respect to the axis of the material inlet passage can be provided. The sealing surface in the circumferential direction is preferably a sealing cone.

Since the material inlet passage is preferably directly equipped with a connection accommodating device such as a screw, no additional member is required. The female thread also has the advantage that it can be easily formed in the material supply passage during the fabrication of the spraying device and is protected against external damage. The sealing surface within the material inlet is similarly easily made by holes of different diameters. Apart from that, such a sealing surface, preferably formed as a sealing cone, can be easily cleaned with a spray solution.

In another advantageous embodiment, in addition to the material feeding device, a closing device, especially in the form of a closing plug, is provided. With this closing device, an unused material inlet passage can be leasably closed. In this case, the closing device comprises a substantially axial protrusion, preferably one central protrusion. This protrusion protrudes from the mating surface of the closing device in the circumferential direction and reaches the inside of the material inlet passage. The circumferential counterpart sealing surface is preferably the sealing surface in the material inlet passage for sealing, or preferably the counterpart sealing cone that cooperates with the sealing cone.

This structure has the advantage that the material inlet passage, which is not connected to the material supply device, can be closed by the closing device. The characteristics of the spraying device are still maintained, preferably by being releasable. This property allows the spraying device to be used equally unimpaired, right-handed or left-handed, when the material feeder is fixed to one side and the material inlet passage on the other side is closed by the closing device. There is.

The closure device preferably comprises a central protrusion that projects substantially axially, and this protrusion projects forward with respect to the mating facing sealing surface of the closure device and reaches into the material inlet passage. The dead space between the closure device and the material passage can be reduced or completely eliminated. Therefore, the central protrusion preferably extends to the end of the material inlet passage without reaching into the material passage. By sealing with the sealing cone and the mating sealing cone, a sealing portion that can be manufactured extremely easily can be formed.

In another advantageous embodiment, the spraying device comprises a connecting device for the material feeding device. This connecting device serves to connect the material supply device to one of the material inlet passages in a particularly separable manner. The connecting device and the (remaining) material feeding device can preferably be formed as separate parts that are separable from each other. The connecting device can be formed, for example, in the form of a separate connection adapter. However, the connecting device may be fixedly connected to the material supply device, or may be a fixed portion of the material supply device.

It is advantageous that the connecting device preferably has a circumferential counterpart sealing surface in the shape of a counterpart sealing cone. This counterparty sealing surface is arranged on the end surface side of the connecting device. The connecting device preferably has additional male threads. The male thread is formed to screw into the connection accommodating device (female thread) of the material supply passage and serves for a separable connection with this connection accommodating device.

The connecting device is also equipped with a set nut. The set nut has a female thread, which cooperates with the thread of the connecting device to form an engaging and connecting bolt connection. The connecting device, unlike the closing device, does not have a protrusion extending into the material inlet passage.

The mating sealing surface of the connecting device cooperates with the sealing surface of the material inlet passage, similar to the mating sealing surface of the closing device. Thereby, the sealing surface of the material inlet passage and the mating sealing surface of the connecting device come into contact with each other when the connecting device is screwed into the material supply passage. This creates a liquidtight connection to the outside.

The sealing surface of the material inlet passage and the mating sealing surface of the connecting device are preferably formed as a sealing cone or a mating sealing cone. Such sealing through the corresponding cone has the advantage that the cone self-centers. This facilitates sealing and is less likely to cause defects if the sealing cone and / or the mating sealing cone is damaged. It is advantageous that the sealing cone and the mating sealing cone are formed so as to be in contact with each other along a line extending in the circumferential direction in the assembled state. This allows for greater tolerance during fabrication compared to planar contact.

In an advantageous embodiment of the present invention, a set nut is provided. This set nut is screwed onto the connecting device screw before the connecting device screw is screwed into the female thread of the material inlet passage. The connecting device is screwed into the material inlet passage so that the sealing surface hits the mating sealing surface and is held by the set nut. Therefore, loosening of the connecting device is prevented. This is extremely advantageous. This is because the material supply device does not need to be removed from the spray device and is always fixed at the same angle with respect to the body or the direction of the material jet. When the connecting device is loosened, the side container can rotate almost freely around the axis of the material inlet passage. This can unintentionally empty the contents of the side container. Such set nuts allow the fabrication of such connections without the need for other thread retainers, such as adhesives, that are placed in the threads between the connection device and the material inlet passage. .. This prevents modification of the material supply device.

In the case of embodiments of the connecting device as a separate component, the connecting device preferably has an inner cone on the opposite side of the spraying device. This inner cone cooperates with the outer cone of the material feeder to make a liquid self-centering connection between the connector and the material feeder.

To ensure the supply of spray liquid to the spray device, the connecting device has a central hole. This hole extends from the mating cone to the inner cone through the connecting device. Thereby, the spray liquid is guided from the material supply device to the central hole of the connection device. The spray liquid enters the material inlet passage through the central hole, then the spray liquid is guided into the material passage, from which the spray liquid enters the material nozzle and exits the spray device at the material outlet.

In the case of other advantageous embodiments, the sealing surface of each material inlet passage is made of metal.

In another advantageous embodiment, the spraying device comprises a connecting device for the material feeding device and preferably a closing device. Each of the closing device and the connecting device preferably has a metal counterpart sealing surface. The mating sealing surface is formed so as to linearly contact the sealing surface of the material inlet passage in the circumferential direction only in the range facing the central plane of the spraying device. The central plane of the sprayer preferably extends centrally between the sides.

The material inlet passage and closure measures and the sealing and mating sealing surfaces of the connecting device are preferably integrally formed with their respective components. This structure has the advantage of being easy to manufacture. In this case, no additional member is required. Apart from this, it is advantageous that such a sealing portion is formed as a conical sealing portion. This has the advantage that the encapsulation is extremely resistant to corrosion and does not need to be replaced on a regular basis unlike encapsulations made of other encapsulants.

It is extremely advantageous that the sealing line extends over the conical sealing portion facing the central plane. This is because this prevents the sprayed liquid from entering the conical sealing portion and, in some cases, making sealing impossible.

In a highly advantageous embodiment, both material inlet passages are formed in the same manner so that the connecting or closing device of the material supply device that can be directly connected to the first material inlet passage is selectively the second material inlet. It can be connected directly to the aisle. This ensures that the closing device and the connecting device can be mounted on both sides.

The screw of the connecting device is preferably formed to have the same structure as the screw of the closing device. Further, the cones of the material inlet passage are formed in the same manner, and the conical cone of the closing device and the conical cone of the connecting device are formed in the same structure.

It is advantageous because the user can switch the spraying device from a right-handed structure to a left-handed structure and vice versa at a low cost by simply replacing the connecting device and the closing device. Another very advantageous point is that the production of right-handed paint spray guns and left-handed paint spray guns will be unified. As a result, the manufacturing cost of a left-handed paint spray gun can be reduced.

An advantageous embodiment of the spraying device additionally comprises one protrusion each surrounding the material inlet passage. The protrusions preferably project outward from each side of the body of the spraying device. The protrusions are preferably formed integrally with the body and are preferably within a range of offset surfaces located on the sides of the body.

In this case, the offset surface is formed by the narrowed portion of the body. The side surface of the main body is displaced inward in the direction opposite to the spraying direction. In this case, the angle between the side surface in contact with the offset surface and the offset surface is 90 ° or more, preferably 110 ° or more. This extends the offset plane over a range of related sides when viewed in the spray direction. Further, the side surface is formed in a circular shape in a range in front of the offset surface when viewed in the spraying direction, whereas the side surface in front of the offset surface is formed flat. Thereby, the offset surface functions to narrow the main body that can be lightly grasped by the user, and also serves as a transition portion from the substantially circular nozzle device and the substantially flat main body.

In a very advantageous embodiment of the material inlet passage, the first and second material inlet passages extend along the same axis.

The common axis of the material inlet passage is preferably oriented so that the ground and the side of the handle or body are at a 90 ° angle so that when the sprayer is held, it faces approximately parallel to the ground. ing. This has the advantage that the material feeder is at the same height on both sides when the sprayer is held as specified.

In a highly advantageous embodiment, the spraying device according to the present invention comprises a material needle capable of closing the material outlet nozzle of the nozzle device. The material inlet passages are point-symmetrical about the axis of the material needle and are jointly formed. Thereby, the closing device and the connecting device or the material supply device connected by the connecting device can be easily replaced.

The axis of the material inlet passage and the axis of the material needle preferably intersect. It is particularly advantageous if both axes intersect at right angles.

Furthermore, it is extremely advantageous that the material passage and the material inlet passage coaxial with the material needle have the same diameter. Thereby, a step at the transition portion between the material inlet passage and the material passage is avoided. Therefore, it becomes easy to clean the portion of the spraying device that guides the spraying liquid.

In a fabrication technically advantageous variant, the material inlet passage is formed by a common through hole in the body. The through hole extends from one side surface of the main body to the other side surface, and preferably extends perpendicular to the central plane of the spraying device. As a result, a through hole can be formed by one drilling of the main body, and thus the manufacturing labor and thus the manufacturing cost are reduced.

Next, the present invention will be described based on exemplary embodiments.

It is a perspective view which looked at the spraying apparatus which concerns on this invention from the 1st gaze direction. It is a perspective view which looked at the spraying apparatus of FIG. 1 from the 2nd gaze direction. The spraying device of FIG. 1 having a paint container connected to the left side is shown. The spraying device of FIG. 1 having a paint container connected to the right side is shown. It is sectional drawing of the spraying apparatus of FIG. 1 in the range of a control valve. It is sectional drawing of the spraying apparatus of FIG. 1 in the range of a material inlet passage. It is a partial cross-sectional view of the spraying device of FIG. 1 along the central plane of the main body.

1 and 2 are perspective views of the spraying device 1. FIG. 1 is a perspective view showing a side surface 11 on the right side of the spraying device 1. The perspective view of FIG. 2 shows substantially the left side surface 12 of the spraying device 1.

The illustrated spraying device 1 is preferably a paint spray gun, particularly an air-mixed spray type paint spray gun. The spraying device 1 includes a main body 2, and a handle 4 protrudes from the lower surface 3 of the main body 2. Further, a nozzle device 5 for spraying a spray liquid, particularly a coating material, is shown. The nozzle device 5 is preferably removably fixed to the front surface 6 of the main body 2.

The spraying device 1 has first and second material inlet passages 7, 8. Each of the inlet passages functions to fluidly connect the material supply device 9 shown in FIGS. 3 and 4 to the nozzle device 5. The main body 2 of the spraying device 1 further has an upper surface 10 on the side opposite to the lower surface 3 and two side surfaces 11 and 12 facing each other. The side surfaces 11 and 12 of the main body 2 connect the upper surface 10 of the main body 2 to the lower surface 3 of the main body 2, respectively. The side surface of the spraying device 1 includes the side surfaces 11 and 12 of the main body 2 and the side surfaces 35 and 36 of the handle 4 connected to the side surfaces 11 and 12. The first material inlet passage 7 is provided on one side surface 11 of the main body 2, and the second material inlet passage 8 is provided on the other side surface 12 of the main body 2.

3 and 4 are perspective views of a spraying device 1 provided with a material supply device 9 as an example. This material supply device is formed here as a pouring container 13. In this case, FIG. 3 is a perspective view of the spraying device 1 in which the material supply device 9 is attached to the left side surface 12 of the spraying device 1. As a result, FIG. 3 shows the structure of the spraying device 1 for use by left-handed people. FIG. 4 shows a spraying device 1 having a material supply device 9 connected to the right side surface 11. Thereby, the spraying device 1 shown in FIG. 4 is suitable for use by a right-handed person.

The material supply device 9 shown in FIGS. 3 and 4 can be formed as the shown pouring container 13, but a hanging container (not shown) or a material supply hose (also not shown) is provided as the material supply device 9. Can be done. The material supply device 9 can be selectively fluid-connected to the nozzle device 5 by the first or second material inlet passages 7 and 8. In this case, the first material inlet passage 7 is on the right side of the spraying device 1 shown in FIG. 1, and the second material inlet passage 8 is on the left side of the spraying device 1 shown in FIG. In this case, the right side of the spraying device 1 points to the palm side when a right-handed person holds the spraying device 1 as specified, whereas the left side of the spraying device 1 is the user's thumb. It is suitable for.

As can be seen from FIGS. 1 to 4, the material inlet passages 7 and 8 are located on the side surfaces 11 and 12 of the spraying device 1 so as to be located within the range of the offset surfaces 21 and 22 of the side surfaces 11 and 12 of the main body 2. Have been placed. The spraying device 1 is tapered in the direction opposite to the spraying direction at the side surfaces 11 and 12, whereby the side surfaces 11 and 12 have offset surfaces 21 and 22. At this offset surface, the side surfaces 11 and 12 are displaced toward the central plane 39. In this case, the angle between the offset surfaces 21 and 22 and the central plane 39 of the spraying device 1 shown in FIG. 2 is preferably larger than 90 °.

In FIG. 5, the main body 2 is shown in cross-sectional view. The cut surface extends coaxially with the control valve 14 of the spraying device 1 and perpendicular to the side surfaces 11 and 12. In this case, the control valve 14 is formed in the form of a circular jet / wide jet type control valve. The control valve 14 crosses the main body 2 from one side surface 11 and 12 to the other side surface. A first adjusting element 15 and a second adjusting element 16 are provided. Each of these control elements is connected to a control valve 14. Thereby, the control valve 14 can be operated by both the first control element 15 and the second control element 16. In this case, the first adjusting element 15 is arranged on one side surface 11 of the main body 2, and the second adjusting element 16 is arranged on the opposite side surface 12 of the main body 2. With this arrangement, the adjusting elements 15 and 16 are gripped by the hand of the user holding the spraying device 1, regardless of whether the user is holding the spraying device 1 with his right hand or his left hand. Adjustable without. The adjustment is preferably performed with the thumb of the above hand. The illustrated circular jet / wide jet type control valve 14 functions to control the air flow flowing out of the nozzle device 5 through the angular jet 37 or the annular gap 38 and the control nozzle.

FIG. 6 is a cross-sectional view of the main body 2 of the spraying device 1. In this case, the cut surface passes through the axes of the material inlet passages 7 and 8 and extends perpendicularly to the side surfaces 11 and 12. The material inlet passages 7 and 8 have connection accommodating devices 25 and 26, preferably female threads, and preferably circumferential sealing surfaces 27 and 28 in the material inlet passages 7 and 8, respectively, to connect to the material supply device 9. Is directly equipped. The sealing surfaces 27 and 28 are preferably formed in the shape of a sealing cone. The sealing surfaces 27, 28 of the material inlet passages 7, 8 are preferably made of metal.

Further, the closing device 18 of the spraying device 1 is shown. This closure device is specifically formed in the form of a closure plug. The closing device 18 can releasably close the unused material inlet passages 7 and 8. The closing device 18 includes a central protrusion 29. This protruding portion protrudes substantially in the axial direction of the closing device 18 from the mating sealing surface 33 in the circumferential direction and reaches the inside of the material inlet passages 7 and 8. The circumferential counterpart sealing surface 33 is preferably formed as a counterpart sealing cone.

Further, a connecting device 30 of the material supply device 9 for connecting to the material inlet passages 7 and 8 is shown. The material supply device 9 is not shown here. The illustrated connecting device 30 includes a counterpart sealing surface 32 in the circumferential direction, and preferably a set nut 31. The counterparty sealing surface 32 is arranged on the end surface side of the connecting device 30, and is preferably formed in the shape of a counterparty sealing cone.

The illustrated connecting device 30 and the closing device 18 of the material supply device 9 are formed so as to have counterpart sealing surfaces 32 and 33 preferably made of metal, respectively. The mating sealing surface is formed so as to make linear contact only in the range of the sealing surfaces 27 and 28 of the material inlet passages 7 and 8, preferably in the range of the sealing cone. This sealing cone faces the central plane 39 of the spraying device 1. In this case, the central plane 39 of the spraying device 1 preferably extends to the center between the side surfaces 11 and 12 on both sides, as can be seen from FIG.

Since the material inlet passages 7 and 8 are formed in the same manner, the connecting device 17 and / or the closing device 18 of the material supply device 9 that can be connected to the first material inlet passage 7 is the second material inlet passage 8. Can also be directly connected to. The material inlet passages 7 and 8 preferably extend along the same axis 40 as shown in FIG.

As can be seen from FIG. 6, the material inlet passages 7 and 8 are surrounded by the protrusions 19 and 20, respectively. This protruding portion protrudes outward from the side surfaces 11 and 12 of the main body 2. The protrusions 19 and 20 are preferably formed integrally with the main body 2. Material inlet passages 7 and 8 extend along the same central axis 40.

FIG. 7 shows a cross section of the spraying device 1 along the central plane 39. A material needle 23 is provided. The material outlet nozzle 24 of the nozzle device 5 can be closed by this material needle. The material inlet passages 7 and 8 shown in detail in FIG. 3 are formed point-symmetrically and identically about the central axis 40 of the material needle 23. Further, the central axis 40 of the material inlet passages 7 and 8 and the central axis 41 of the material needle 23 are preferably vertical.

Similarly illustrated material passage 34 extends from the ends of the material inlet passages 7 and 8 facing the central plane 39 of the spraying device 1 to the beginning of the material outlet passage 24, thereby the center of the connecting device 17. The material supply device 9 is connected to the material outlet nozzle 24 through the holes, the material inlet passages 7 and 8, and the material passage 34. The spray liquid subsequently exits the spray device 1 at the outlet of the material outlet nozzle 24.

As can be seen from both FIGS. 7 and 6, the material inlet passages 7 and 8 are formed by common through holes in the main body 2. The through hole extends from one side surface 11 of the main body to the other side surface 12 and faces perpendicular to the central plane 39 of the spraying device 1.

1 Spraying device, 2 Main body, 3 Bottom surface, 4 Handle, 5 Nozzle device, 6 Front surface, 7, 8 Material inlet passage, 9 Material supply device, 10 Top surface, 11, 12 side surface.

Claims (14)

Manual spraying device (1), especially paint spray guns, preferably air-mixed spray paint spray guns, at least
The main body (2) with the handle (4) protruding from the lower surface (3),
A nozzle device (5) attached to the front surface (6) of the main body (2) for spraying a spray liquid, particularly a coating material,
A material inlet passage (7, 8) for fluidly connecting the material supply device (9) to the nozzle device (5) is provided.
The main body (2) has an upper surface (10) on the side opposite to the lower surface (3) and two side surfaces (11, 12) facing each other, and these side surfaces are the upper surface (10) and the above, respectively. In the spraying device (1), in which the lower surface (3) is connected and the first material inlet passage (7) is formed on one side surface (11) of the main body (2).
A spraying device (1) characterized in that a second material inlet passage (8) is formed on the other side surface (12) of the main body (2). The spraying device (1) comprises at least one material supply device (9), the material supply device being specifically formed as a pouring container (13) and / or a hanging container and / or a material supply hose. The spraying device (9) according to claim 1, wherein the device (9) can be selectively fluid-connected to the nozzle device (5) by means of a first or second material inlet passage (7, 8). 1). The spraying device (1) preferably comprises a control valve (14) in the form of a circular jet / wide jet type control valve, which control valve (14) is provided by a first control element (15) and a second control element. Adjustable by (16), the first adjusting element (15) is arranged on one of the side surfaces (11) of the main body (2), and the second adjusting element (16) is of the main body (2). Arranged on the opposite side surface (12), thereby holding the jet device (1) regardless of whether the user is holding the jet device (1) with his right hand or his left hand. The jetting device (1) according to claim 1 or 2, wherein the spraying device can be adjusted by the user's hand without changing the grip. Within the connection accommodating device (25, 26), preferably the internal thread and / or the material inlet passage (7, 8), respectively, for the material inlet passages (7, 8) to connect to the material supply device (9). The spraying device (1) according to any one of claims 1 to 3, further comprising a sealing surface (27, 28) in the circumferential direction and preferably in the shape of a sealing cone. The spraying device (1) includes a closing device (18), particularly in the form of a closing plug, which allows the unused material inlet passages (7, 8) to be leasably closed, said closing. The device (18) preferably comprises a central projecting portion (29) that projects substantially axially, and this projecting portion is a circumferential mating seal in the shape of a preferably mating sealing cone of the closing device (18). The spraying device (1) according to any one of claims 1 to 4, wherein the spraying device (1) protrudes from the surface (33) and reaches the inside of the material inlet passages (7, 8). The spraying device (1) is provided with a connecting device (30) of the material supply device (9) for connecting to one of the material inlet passages (7, 8), and the connecting device (30) is a set nut (31). ), And / or preferably a circumferential mating facing sealing surface (32) in the shape of a mating sealing cone, the mating sealing surface (32) being located on the end face side of the connecting device (30). The spraying device (1) according to any one of claims 1 to 5, wherein the spraying device (1). The spraying device (1) according to any one of claims 1 to 6, wherein each of the material inlet passages (7, 8) has a sealing surface (27, 28) made of metal. ). The spraying device (1) includes a connecting device (30) and / or a closing device (18) of the material supply device (9), and the material supply device and the closing device are each preferably a metal counterpart sealing surface. (32, 33) is provided, and the sealing surface of the material inlet passage (7, 8) is provided only in a range in which the mating sealing surface faces the central plane (39) of the spraying device (1). It is characterized in that it contacts (27, 28) linearly and the central plane (39) of the spraying device (1) preferably extends to the center between the side surfaces (11, 12) on both sides. The spraying device (1) according to any one of claims 1 to 7. The connecting device (17) and / or closing device (17) of the material supply device (9) to which the material inlet passages (7, 8) are formed in the same manner and thereby can be connected to the first material inlet passage (7). The spraying device (1) according to any one of claims 1 to 8, wherein the spraying device (1) can be selectively and directly connected to the second material inlet passage (8). The material inlet passages (7, 8) are each surrounded by protrusions (19, 20), and the protrusions project outward from the respective side surfaces (11, 12) of the main body (2), and the protrusions (19) , 20) are preferably formed integrally with the main body (2) and / or preferably arranged in the range of the offset surface (21, 22) of the side surface (11, 12) of the main body (2). The spraying device (1) according to any one of claims 1 to 9, wherein the spraying device (1). The spraying apparatus according to any one of claims 1 to 10, wherein the first and second material inlet passages (7, 8) extend along the same axis (40). (1). A material needle (23) is provided, the material outlet nozzle (24) of the nozzle device (5) can be closed by the material needle, and the material inlet passage (7, 8) is the axis of the material needle (23). The spraying device (1) according to any one of claims 1 to 11, characterized in that the spraying device is formed point-symmetrically with respect to (41). A material needle (23) is provided, and the material outlet nozzle (24) of the nozzle device (5) can be closed by the material needle, and the axis (40) of the material inlet passage (7, 8) is the material needle. The spraying device (1) according to any one of claims 1 to 12, characterized in that it intersects the axis of (23) preferably vertically. The material inlet passages (7, 8) are formed by a common through hole in the main body (2), and the through hole extends from one side surface (11) of the main body (2) to the other side surface (12). The spraying device according to any one of claims 1 to 13, characterized in that the spraying device (1) extends preferably perpendicular to the central plane (39) of the spraying device (1). 1).