EP0649365A1 - Joining element for detachably joining a tool to a handle - Google Patents
Joining element for detachably joining a tool to a handleInfo
- Publication number
- EP0649365A1 EP0649365A1 EP93909863A EP93909863A EP0649365A1 EP 0649365 A1 EP0649365 A1 EP 0649365A1 EP 93909863 A EP93909863 A EP 93909863A EP 93909863 A EP93909863 A EP 93909863A EP 0649365 A1 EP0649365 A1 EP 0649365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- element according
- connecting element
- parts
- pawl
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G3/00—Attaching handles to the implements
- B25G3/02—Socket, tang, or like fixings
- B25G3/12—Locking and securing devices
- B25G3/18—Locking and securing devices comprising catches or pawls
Definitions
- the invention relates to a connecting element for the releasable connection of an implement to a work handle or another comparable handle.
- Such connecting elements are often used to connect cleaning devices such as brooms, pugs and the like to a handle.
- a known connecting element has two parts, one part of which has an external thread and can be attached to a handle and the other part has a corresponding internal thread and can be attached to the implement. By screwing the parts together, they can be detached at any time, for example to use the handle for another device that also has a corresponding part with an internal thread.
- this screw connection has the disadvantage that it must be tightened very firmly in the case of work tools which are also rotated by means of the handle, in order to ensure a stable connection, since otherwise the screw connection is unscrewed when the work tool is rotated. If the screw connection is strongly tightened, it is, however, also difficult to loosen, especially if the screw connection is loosened at lower temperatures should be, since the external thread shrinks more than the internal thread.
- the object of the invention is to provide a connecting element which ensures a stable but easily releasable connection of the handle and the implement.
- the connecting element according to the invention has two parts which can be pushed together and which can be locked in the desired position by means of a latching pawl and a pawl receptacle, twisting of the two parts being prevented by means of an anti-rotation device. In this way, a stable, rotationally fixed connection is created, which can be easily released by actuating the latch.
- the parts are advantageously pushed into one another, for which purpose at least one part has a hollow cross section into which the other part can be inserted.
- the cross sections of the parts can be round or angular. If an angular hollow cross-section is selected into which a corresponding angular cross-section is inserted, the edges and surfaces of the cross-sections act as an anti-twist device which prevents the two parts from twisting against one another.
- the anti-rotation device can also be formed by a special projection on one of the parts, which cooperates with a corresponding recess in the other part and makes twisting impossible by means of a positive connection between the parts.
- the pawl itself can also serve as an anti-rotation device. If, for example, the latch has a head which engages in a recess on the other part as a pawl receptacle, this engagement creates a positive connection which is effective in the radial direction and which prevents the parts from rotating. In this case, however, the latch must be dimensioned stronger and also be immovable in the radial direction.
- positive locking can also be produced by another part of the latching pawl, for example a web-like section, which comes to rest in a corresponding recess in the other part when the parts are assembled.
- the necessary mobility of the latch can be achieved in that the outer surface of the part has a U-shaped recess, the web remaining in the middle of the "U” then forming the latch and being provided with a projection in the area of the U-base in order to be able to snap into the jack of the other part.
- the pawl receptacle is formed in one piece with the corresponding part, the pawl receptacle advantageously being designed as an opening in the lateral surface of the part, so that the head of the latch protrudes into the opening or even protrudes through it in the locked state, so easily by the user to be released by pressing into the breakthrough.
- the locking pawl can be rocker-like, with one arm of the rocker having the head of the locking pawl, which latches with an inaccessible pawl receptacle, and the other arm of the rocker serves to unlock the locking pawl by lifting the head out of the pawl receptacle when pressure is applied becomes.
- a special unlocking option of the latch can be dispensed with, if it is designed so that it can be pulled out of the jack receptacle again by a certain force that exceeds the normal actuating force. It is generally advantageous if the latching pawl is under spring tension at least in the latched state, this spring tensioning being able to be applied by the elasticity of the latching pawl itself or a resilient element.
- a double anchor cross-section has proven itself for the connection of the connecting element to the handle or the implement.
- a particularly simple and advantageous connection is obtained if the part is provided with a snap-in element which can be snapped into this by pressing into a corresponding element. In this way, the connection can be made quickly and also detached again, the shape of the snap-in elements at the same time determining the degree of freedom of the possible movement. If, for example, a spherical body is used that is pressed into a spherical socket, movement around all axes is made possible. If, on the other hand, a cylindrical roller is used, only movement around an axis is possible.
- the connecting element is advantageously produced from a thermoplastic.
- both the latching pawl and the anti-rotation device can be formed with a core, which is explained in more detail with reference to the exemplary embodiment which also has this design.
- Figure 1 shows the connecting element in the locked state.
- Figure 2 shows the first part of the connecting element, which has the ratchet pawl.
- FIG. 3 shows the first part in a view rotated by 90 ° with respect to FIG.
- FIG. 4 shows the cross section of the first part according to line AA in FIG. 3.
- FIG. 5 shows the cross section of the first part according to line BB in FIG. 3
- FIG. 6 shows the second part of the connecting element which has the jack receptacle.
- FIG. 7 shows the cross section of the second part according to line CC in FIG. 6.
- FIG. 8 shows the cross section of the second line D - D in FIG. 6.
- the connecting element can be seen in the locked state.
- the two parts 1, 2 are pushed into each other up to a stop 3 and locked.
- the second part 2 has an opening 5 as a pawl receptacle, in which a head 6b of a latch 6 can be seen. To release the connection, this head 6b is pressed into the opening 5 by the user of the device and the two parts 1, 2 are pulled apart.
- the second part 2 can be seen, which has the latch 6 with the head 6b.
- the second part 2 is divided into two sections.
- the first section 2a is used for fastening to the work handle, which will be dealt with later, and the second section 2b is used for connection to the first part 1.
- the second section 2b has an essentially hollow, round cross section, which is in the direction of the first section 2a ends at a stop 3 in the form of a ring collar.
- the latching pawl 6 is formed from an area of the lateral surface of the second section 2b;
- the outer surface has a U-shaped recess 7, which releases a web 6a and the head 6b from the outer surface.
- the head 6b is, as can be seen clearly from FIG. 2, thickened, so that it protrudes from the outer surface in the rest state. A certain elasticity is achieved by the elongate web 6a of the latch 6, which of course is strong depends on the thickness of the web 6a and the material used.
- Figures 4 and 5 show the cross sections of the second part 2 according to the sections A - A and D - D in Figure 3.
- the cross section of the first section 2a of the second part 2 has a so-called double anchor cross section .
- This cross-section is suitable for receiving plastic handles that have a corresponding inner cross-section.
- Elongated projections of the profile of the stem engage in the elongated grooves 8 of the double anchor cross-section and thus establish a rotationally fixed connection.
- the connecting element shown is made of a thermoplastic and has not shown bevels in order to be able to remove it.
- the first section 2a of the second part therefore does not exactly have the cylindrical shape shown, but is slightly frustoconical in shape. Due to this shape, the handle can be easily attached to the first section 2a to the stop 3, the handle being slightly expanded in the end region when it is attached and therefore holding well on the second part 2 of the connecting element.
- the cross section of the second section 2b can be seen in FIG. 5; the web 6a formed by the U-shaped recess 7 and the thickened head 6b can clearly be seen. Opposite the U-shaped recess 7 there is a rectangular recess 9 in the lateral surface of the second section 2b, which acts as an anti-rotation device when the connecting element is plugged together, which will be discussed later.
- the rectangular recess 9 has a surface that exceeds the "U" of the U-shaped recess 7. This makes it possible to insert a mandrel into the second section 2b from the side of the rectangular recess through this, which is also the core for the U-shaped recess 7.
- the entire cavity of the second section 2b, the U-shaped recess 7 and the rectangular recess 9, which forms the anti-rotation device, can be created in this way with a single mold core.
- FIG. 1 shows the first part 1 of the connecting element, into which the second part 2 with the second section 2b is inserted.
- the first part 1 has a first section 1 a, as can be seen in FIG. 7, also with a double anchor cross section, which can be connected to the implement.
- the implement can be additionally secured by means of the bore 10 in the first section.
- the second section 1b has an essentially round hollow cross section, the lateral surface of which has a rectangular opening 5 for receiving the head 6b.
- FIG. 1 The cross section of the second section in the area of section D - D is shown in FIG.
- the opening 5 can be seen, which widens somewhat towards the inside in order to facilitate the locking of the head 6b.
- the recess 11, which widens this in the region of the opening 5, is continued up to the insertion opening for the second part 2, as can also be seen from the dashed line in FIG. 6.
- This recess 11 makes it much easier to insert the latch 6 with the head 6b.
- an elongated projection 12 Opposite this recess 11 is an elongated projection 12, which can be seen in cross section in FIG.
- this projection 12 comes to rest in the rectangular recess 9 of the first part and thus prevents the two parts 1, 2 from twisting as an anti-rotation device.
- the width de ⁇ increases Projection 12 towards the insertion opening, so that the second Part 2 does not necessarily have to be inserted into the first part 1 in the exactly correct angular position, but rather is guided through the projection 12 to the correct position for latching the latch 6.
- the intermeshing of the parts 1, 2 is limited not only by the latching of the latching pawl 6, but also by the stop 3 at which the end 13 of the second section 1b of the first part 1 comes to rest.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT93909863T ATE174249T1 (en) | 1993-04-29 | 1993-04-29 | CONNECTING ELEMENT FOR DETACHABLE CONNECTING A WORKING DEVICE TO A WORKING HANDLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1993/001041 WO1994025223A1 (en) | 1993-04-29 | 1993-04-29 | Joining element for detachably joining a tool to a handle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0649365A1 true EP0649365A1 (en) | 1995-04-26 |
EP0649365B1 EP0649365B1 (en) | 1998-12-09 |
Family
ID=8165725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93909863A Expired - Lifetime EP0649365B1 (en) | 1993-04-29 | 1993-04-29 | Joining element for detachably joining a tool to a handle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0649365B1 (en) |
DE (1) | DE59309209D1 (en) |
WO (1) | WO1994025223A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5871493A (en) * | 1995-10-31 | 1999-02-16 | Smith & Nephew Endoscopy Inc. | Surgical instrument handpiece and system |
DE10059764B4 (en) * | 2000-11-30 | 2010-03-11 | Joachim Kuhn | Toilet brush with detachable brush part |
US7258046B2 (en) * | 2005-09-01 | 2007-08-21 | Winsire Enterprises Corporation | Screwdriver bit cartridge retainer |
ITMI20130294A1 (en) * | 2013-02-28 | 2014-08-29 | Nespoli Group S P A | CONNECTION DEVICE FOR TOOLS |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3143080C2 (en) * | 1981-10-30 | 1983-09-29 | Fa. Carl Freudenberg, 6940 Weinheim | Handle attachment, especially for brooms |
DE3229054A1 (en) * | 1982-08-04 | 1984-02-09 | Roman Dietsche KG, 7868 Todtnau | Brooms, scrubbing brushes or the like with a handle attached releasably to the brush body |
DE3234704A1 (en) * | 1982-09-18 | 1984-03-22 | Roman Dietsche KG, 7868 Todtnau | Broom, scrubbing brush or the like with a handle detachably fixed to the brush body |
ES286841Y (en) * | 1985-05-20 | 1988-10-01 | Vileda Gmbh | DEVICE FOR COUPLING A HANDLE TO A CLEANING TOOL |
DE8600750U1 (en) * | 1986-01-15 | 1986-02-27 | Peters, Heinrich Josef, 4178 Kevelaer | Coupling for connecting a broom or the like to a handle |
GB8824988D0 (en) * | 1988-10-25 | 1988-11-30 | Sharp K W | Brush |
US5207754A (en) * | 1991-01-30 | 1993-05-04 | Flc, Inc. | Quick-release connector for mop handles and the like |
-
1993
- 1993-04-29 EP EP93909863A patent/EP0649365B1/en not_active Expired - Lifetime
- 1993-04-29 DE DE59309209T patent/DE59309209D1/en not_active Expired - Lifetime
- 1993-04-29 WO PCT/EP1993/001041 patent/WO1994025223A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9425223A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0649365B1 (en) | 1998-12-09 |
DE59309209D1 (en) | 1999-01-21 |
WO1994025223A1 (en) | 1994-11-10 |
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