EP1117489B1 - Caulking gun - Google Patents

Abstract

A caulking gun requiring little space when not in use is provided. The caulking gun has an elongate receiving unit for holding a cartridge containing the product to be dispensed and a handle which, when the caulking gun is being operated, extends outward in a crosswise or diagonal manner relative to the elongate receiving unit. The handle may be moved into a position substantially parallel to the elongate receiving unit when not in use.

Description

The invention relates to a cartridge gun with an elongated receiving unit for a cartridge filled with the product to be dispensed, with a Dosing unit for the product to be dispensed and with a handle that is in Operating position across or at an angle to the elongated mounting unit extends outside.

Known cartridge pistols of this type are used for pressing out viscous ones Masses, e.g. B. jointing compounds used from cartridges. Known Cartridge guns consist of the holding unit, the dosing unit and a handle firmly connected to the receiving unit. The dosing unit has a displaceably mounted piston rod with a piston that opposes presses the movable bottom of an inserted cartridge so that the Contents of the cartridge are dispensed from the opening, which is the sliding Floor is opposite. With the handle is a movable, in general pivotable control element connected to the piston rod interacts. By manually pressing this control the piston rod and thus the piston is moved so that the bottom the cartridge is pushed towards the dosing opening of the cartridge and the contents the cartridge through this generally nozzle-like opening to the outside is pressed.

A disadvantage of the known cartridge guns is the space required. It can the piston rod are inserted into the receiving unit, but the crosswise or extending obliquely to the elongated receiving unit Handle takes up a lot of space. The space requirement leads to increased transport, Packaging and storage costs at the manufacturer and supplier. The space requirement too in the sales room is high. Finally, the user also needs a relatively large space for storing the unused cartridge gun.

The invention is therefore based on the object, the space required for one used cartridge gun of the type mentioned significantly reduce.

This object is achieved according to the invention by the features of the claim 1.

From the abstract of Japanese publication JP-A-06262114 already a generic cartridge gun with a swivel Handle known.

In the rest position, the handle requires considerably less space than in the Operating position, so that the cartridge gun during transport, during packaging and considerable in terms of storage and presentation in the sales room takes up less space.

It is within the scope of the invention that the handle is detachable with the other parts the cartridge gun is connected. A loss of individual parts the cartridge gun is avoided and the user friendliness is increased however suggested that the handle be pivotable with the receptacle and / or the dosing unit is connected. If the dosing unit has a sliding Has piston, it is also proposed that the handle about a pivot axis running transverse to the stroke direction of the piston is pivotable.

In order to increase operational safety, the handle is advantageous Embodiment of the invention can be locked at least in the operating position. If the receiving unit is a holder for receiving the dosing unit has, it is also advantageous if the handle cooperating with the bracket Has snap connection parts so that the handle on can be locked and unlocked easily.

To improve usability, it is also proposed that the snap connection parts have two articulated arms. These articulated arms are preferably located on the handle in the area of the pivot axis.

It is particularly advantageous if the handle is in the operating position as well as lockable in the rest position. Even in the rest position the handle, the cartridge gun can be particularly easy in this case handle. To lock the handle in the rest position continues suggested that the bracket cooperate with the free end of the handle Has snap connection parts. These can, for example, in Form a projecting tab can be provided, behind which the end of the Handle can snap into place. This way are for snap connection no additional parts required on the handle.

If the usual cartridge pistols are not used, there is no need for the operating lever force exerted on the piston when e.g. B. released the operating lever is, the substance in the cartridge exerts a back pressure on the Piston, so that a locking mechanism is provided, which any Backward movement of the piston prevented. The constantly on the cartridge piston acting force is during the pressing of the mass of Advantage, but leads to an unwanted exit of the work stoppage viscous mass, what is called "chasing". Such locking mechanisms are also structurally complicated with conventional cartridge guns and must operated separately, namely resolved, in order to interrupt work To prevent running.

In a further advantageous embodiment of the invention, it is therefore proposed that that the dosing unit cooperating with the piston Has braking device, so that a cartridge gun simple from a design point of view is obtained with good dosing properties. The braking device keeps the piston rod in its essence during the squeezing process Position when the operating lever is released to press again to start. The braking device, however, enables work to be interrupted a slight retraction of the piston rod to the cartridge piston to relieve pressure and thus prevent after-running. The known complicated locking mechanisms can therefore be dispensed with, because the pistol automatically relaxes when work is interrupted.

If the piston has a piston rod, the braking device is preferably present from at least partially closely enclosing the piston rod Part of the bracket.

Figur 1

eine teilweise durchbrochene perspektivische Ansicht einer erfindungsgemäßen Kartuschenpistole mit dem Handgriff in der Ruhestellung,

Figur 2

die Kartuschenpistole nach Figur 1 mit dem Handgriff in der ausgeklappten Betriebsstellung,

Figur 3

die Verbindung zwischen dem Handgriff und den übrigen Teilen der Kartuschenpistole in teilweise durchbrochener perspektivischer Detailansicht aus der Richtung des Pfeils III in Figur 2,

Figur 4

einen Schnitt entlang der Linie IV-IV in Figur 3,

Figur 5

einen Schnitt entlang der Linie V-V in Figur 3,

Figur 6

eine teilweise durchbrochene perspektivische Ansicht der Kartuschenpistole in einer Verkaufsverpackung, wobei sich der Handgriff in der Ruhestellung befindet, zusammen mit einer Kartusche,

Figur 7

eine verpackte Kartuschenpistole nach Figur 6, aber ohne mitverpackte Kartusche, und

Figur 8

einen Längsschnitt durch ein weiteres Ausführungsbeispiel.

Exemplary embodiments of the invention are explained in more detail below with reference to drawings. Show it

Figure 1

2 shows a partially broken perspective view of a cartridge gun according to the invention with the handle in the rest position,

Figure 2

the cartridge gun according to Figure 1 with the handle in the extended operating position,

Figure 3

the connection between the handle and the other parts of the cartridge gun in a partially broken perspective detail view from the direction of arrow III in Figure 2,

Figure 4

4 shows a section along the line IV-IV in FIG. 3,

Figure 5

4 shows a section along the line VV in FIG. 3,

Figure 6

3 shows a partially broken perspective view of the cartridge pistol in a sales packaging, the handle being in the rest position, together with a cartridge,

Figure 7

a packaged cartridge gun according to FIG. 6, but without a cartridge which is also packed, and

Figure 8

a longitudinal section through a further embodiment.

In all drawings, the same reference numerals have the same meaning and may therefore only be explained once.

The cartridge gun 1 shown in the figures has a receiving unit 2 for receiving a cartridge, a dosing unit 3 and one with the receiving unit 2 and the dosing unit 3 connected handle 4, this foldable from the rest position in FIG. 1 into the operating position according to FIG is. The product to be dispensed, e.g. B. the joint sealant is located in a cylindrical cartridge 10 with a sliding bottom, which the cartridge opening is opposite (Figure 6). The recording unit 2 has one Bracket 5 with an annular front 6, two carriers 7 and one the rear housing 8 for receiving the dosing unit 3. Die Bracket 5 encloses a space 9 for receiving the cartridge 10.

The metering unit 3 has a piston 11, which is displaceable at the end in the housing 8 mounted piston rod 12 is attached. In the housing 8 is in addition, a drive plate 13 which can be tilted in a manner known per se (Figure 5), through the opening 14 of the piston rod 12 protrudes. The opening 14 is slightly larger than the diameter of the piston rod 12, so that the drive plate 13 is freely displaceable along the piston rod 12 is. The drive plate 13 is replaced by a compression spring 15 pressed at the back. To move the piston rod 12 has the handle 4 Control element 16, which on the underside of the drive plate 13th acts. This control element 16 is part of an axis 18 pivotable operating lever 17, which by a torsion spring 19 in is held in a rest position. By operating the control lever 17 and the forward movement of the operating element 16 becomes the drive plate 13 first tilted forward until it hits the piston rod 12 presses and canted there, and then against the biasing force of the Compression spring 15 pushed further forward, with the piston rod 12 the piston 11 moved forward.

To prevent the piston 11 and the piston rod 12 from being pushed back be released as soon as the operating lever 17 and by the force of Torsion spring 19 is pivoted back, is also in the housing 8 a braking device 20 (Figures 3 and 5), which consists of a on the piston rod 12 seated clamping plate and has an opening 21, the Diameter corresponds to the diameter of the piston rod 12. The braking device 20 thereby exerts a frictional force on the piston rod at all times 12 on. The frictional force is so low that it is easy is overcome when the operating lever 17 is operated and the piston rod 12 is pushed forward. However, the frictional force is at least as great like the one exerted on the piston 11 by the movable cartridge base Force so that the piston 11 with the piston rod 12 does not move backwards moves when the operating lever 17 is released.

According to the cartridge gun can be simple and easy Pack and store in a manner as the handle 4 between a rest position and an operating position is movable. In the present example is the handle 4 foldable. For this purpose, the handle 4 is about the same axis 18 as the operating lever 17 is pivotable. The transverse to the stroke direction of the piston 11th extending pivot axis 18 is in extensions extending downward 22 of the housing 8 mounted (Figure 5). In the rest position (Figure 1) is therefore the Handle 4 arranged next to and parallel to the elongated bracket 5.

In the embodiment, the handle 4 can both in the rest position can also be locked in the operating position. For locking in the rest position serves a projecting tab 23 on the underside of the bracket 5th (Figures 1 and 3), the free end 24 of the handle 4 behind this tab 23 snaps into place.

Snap connection parts are used for locking in the operating position are located on the top of the handle 4 (Figures 3 and 4). The snap connection parts consist of two articulated arms 25, the ends 26 of which are hook-shaped are executed. In the present example, the articulated arms 25 are included the handle 4 is made in one piece from an elastic and flexible material, so that they are "articulated". When the handle 4 in the operating position is pivoted, the hook-shaped ends 26 protrude through openings 27 in the rear wall of the housing 8 through where they hook behind cams 28. To unlock the handle 4, the free ends 29 of the articulated arms 25 compressed in the direction of arrow P (Figures 3 and 4), see above that the hook-shaped ends 26 move apart and thereby from loosen the cam 28.

Since the handle 4 can be folded, the space requirement is not used cartridge gun 1 considerably less than when unfolded Status. This has the advantage that a relatively small and inexpensive shaped Packaging 30 can be used, which is easy to stack and also takes up little sales space (Figures 6 and 7). The cartridge gun can be done without (Figure 7), but also with one or more cartridges 10 and a spray nozzle 31 (Figure 6) are sold. Leaves after use the cartridge gun 1 by folding the handle 4 in particular store in a practical way, for example by using one with the bracket 5 connected eyelet 32 (Figure 3) is hung on a hook.

FIG. 8 shows some further advantageous details in a schematic representation a further embodiment of the cartridge gun according to the invention. For the sake of clarity, there are some parts in this drawing such as the compression spring 15 and the drive plate 13 omitted.

In contrast to the previous embodiment, the clamping ring 20 is wider arranged at the front. It not only serves as a braking device, but grazes during operation also the abrasion caused by the notching of the drive plate 13 in the piston rod 12 is formed.

Furthermore, an oil-soaked ring 33 is provided on the piston rod 12. which ensures a thin oil film on the piston rod 12 during operation. To the the piston rod 12 is cleaned in this way. On the other hand, it becomes during storage or operation in a damp environment against corrosion protected. Due to the constant notching of the drive plate 13 in the usual piston rod 12 consisting of iron / steel is namely in humid environment very susceptible to corrosion or oxidation.

Furthermore, an opening 34 is provided on the top of the housing 8, in which is an unused cap 35 of the cartridge or not used outlet nozzle of the cartridge can be used so that the user she doesn't lose.

The invention is not restricted to the exemplary embodiment described. So For example, the handle could not only be swiveled, but also to others Be movably connected to the bracket. In addition, the Handle can also be pivoted in a different direction than in the present example his. The handle could even be detachable with the rest of the cartridge gun be connected.

LIST OF REFERENCE NUMBERS

1

caulking gun

2

recording unit

3

dosing

4

handle

5

bracket

6

front

7

carrier

8th

casing

9

room

10

cartridge

11

piston

12

piston rod

13

driver disc

14

opening

15

compression spring

16

operating element

17

operating lever

18

Axis, swivel axis

19

torsion spring

20

Brake device, clamping ring

21

opening

22

extension

23

flap

24

End of the handle

25

articulated arm

26

The End

27

opening

28

cam

29

The End

30

packaging

31

nozzle

32

eyelet

33

ring

34

opening

35

cap

Claims (9)

1. Caulking gun (1) comprising an elongate receiving unit (2) for a cartridge (10) filled with the product to be delivered, a metering unit (3) for the product to be delivered and a handle (4) which in operational setting extends outwardly and transversely or obliquely relative to the elongate receiving unit (2), wherein the metering unit (3) comprises a displaceable piston (11) and the piston (11) comprises a piston rod (12) and wherein the handle (4) is movable from the operational setting into a rest setting in which the handle (4) is arranged substantially parallel to the elongate receiving unit (2), characterised in that the receiving unit (2) comprises a holder (5) for receiving the metering unit (3) and the handle (4) comprises snap connecting members (25, 26) co-operating with the holder (5).
2. Caulking gun according to claim 1, characterised in that the handle (4) is pivotably connected with at least one of the receiving unit (2) and the metering unit (3).
3. Caulking gun according to claim 2, characterised in that the handle (4) is pivotable about a pivot axis (18) extending transversely to the stroke direction of the piston (11).
4. Caulking gun according to one of the preceding claims, characterised in that the snap connecting members comprise two hinge arms (25).
5. Caulking gun according to claim 4, characterised in that the pivot arms (25) are disposed on the handle (4) in the region of the pivot axis (18).
6. Caulking gun according to one of the preceding claims, characterised in that the handle (4) is lockable in both the operational setting and the rest setting.
7. Caulking gun according to claim 6, characterised in that the holder (5) comprises snap connecting members (23) co-operating with the free end (24) of the handle (4).
8. Caulking gun according to one of the preceding claims, characterised in that the metering unit (3) comprises a braking device (20) co-operating with the piston (11).
9. Caulking gun according to claim 8, characterised in that the braking device consists of a part (20), which closely surrounds the piston rod (12) at least in part, of the holder (5).

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