CA1091404A - Releasable handle fastening for a cleaning appliance - Google Patents
Releasable handle fastening for a cleaning applianceInfo
- Publication number
- CA1091404A CA1091404A CA291,878A CA291878A CA1091404A CA 1091404 A CA1091404 A CA 1091404A CA 291878 A CA291878 A CA 291878A CA 1091404 A CA1091404 A CA 1091404A
- Authority
- CA
- Canada
- Prior art keywords
- back portion
- fork
- fork arms
- handle
- arms
- 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.)
- Expired
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
- B25G3/24—Locking and securing devices comprising clamping or contracting means acting transversely on the handle or socket
Abstract
S P E C I F I C A T I O N
RELEASABLE HANDLE FASTENING FOR A CLEANING APPLIANCE
ABSTRACT OF THE DISCLOSURE
A device for releasable fastening a handle to a cleaning appliance, such as a broom, scrubber, window wiper or the like, comprises two fork arms for engagement in holes in the back portion of the appliance, the ends of the fork arms being bent over to engage behind undercuts forming part of each hole. The fork arms are secured by a clamping arrangement, various forms of which are described: threaded sleeves on the fork arms, bearing against the back portion; and eccentric device acting between the back portion and a bridge member of the fork arms; a cam surface on a rotatable peg acting between the back portion and the fork arms; a nut on the free end of one fork arm which extends, inclined, through an inter-mediate member on the lower end of the handle; an eccentric device acting between the free ends of the fork arms within a cavity in such intermediate member; or a pair of pins on such member, to which the fork arms are pivotable connected so that the clamping is effected by moving the handle from a inclined position to an upright position in which a locking device is applied.
RELEASABLE HANDLE FASTENING FOR A CLEANING APPLIANCE
ABSTRACT OF THE DISCLOSURE
A device for releasable fastening a handle to a cleaning appliance, such as a broom, scrubber, window wiper or the like, comprises two fork arms for engagement in holes in the back portion of the appliance, the ends of the fork arms being bent over to engage behind undercuts forming part of each hole. The fork arms are secured by a clamping arrangement, various forms of which are described: threaded sleeves on the fork arms, bearing against the back portion; and eccentric device acting between the back portion and a bridge member of the fork arms; a cam surface on a rotatable peg acting between the back portion and the fork arms; a nut on the free end of one fork arm which extends, inclined, through an inter-mediate member on the lower end of the handle; an eccentric device acting between the free ends of the fork arms within a cavity in such intermediate member; or a pair of pins on such member, to which the fork arms are pivotable connected so that the clamping is effected by moving the handle from a inclined position to an upright position in which a locking device is applied.
Description
The invention relates to a device for the releasable fastening of a cleaning appliance such as a broom, scrubber, window ~iper or the like to a shank or handle which at one end comprises two fork~shaped arms which engage in holes in the back portion of the cleaning appliance and are there secured.
There are known fastening devices (German Patent Specifi-cation 439 643, German Utility Model 7 028 080, German Utility Model 7 223 614) constructed in this way which comprise fork arms extending in the first instance parallel to the handle, the said arms being bent outwards directly above the back portion, taken outwards horizontally above the back portion and then bent again into the vertical position and inserted in the holes in the back portion. In order to clamp these fork arms to the back portion, spring means are provided, for example in the form of a helically coiled spring, the two ends of which are of different lengths extending tangentially from the coiled portion which is put on the horizontal portion of one of the fork arms, the shorter end being inserted into an additional hole in the back portion, and the longer end being engaged behind one of the parallel-extending sections of the fork arms.
Usually two such springs are provided, each of the two fork arms being associated with a respective spring. Because of the spring force the ends of the fork arms which engage in the holes in the back portion are pressed against the internal cavity of the hole and thereby secured.
Fastening the cleaning appliance to the handle in this way presents some difficulties, since on the one hand operating instructions have to be supplied to the user and on the other hand a considerable amount of force is required for assembly or disassembly. The spring force has to be made relatively strong in order to hold the cleaning appliance securely, with the result that this spring force has to be overcome by hand when assembling and disassembling. For this reason it is very difficult for the housewife, for example, to replace a worn-out cleaning appliance or to interchange different appliances.
Furthermore this way of fastening the handle is not very satisfactory from the external appearance point of view.
An o~ject of the present invention is to provide a constructionally simple arrangement which is easy to assemble and can be so designed as to have a good external appearance.
According to the present invention there is provided a device for releasably fastening a handle to a cleaning appliance comprising a body which includes a back portion having an upper side to which the handle is to be fastened, said device compris-ing two fork-like arms for engagement in holes provided in the back portion of the cleaning appliance, at the upper side of said portion, the free ends of the fork arms being bent over and the holes in the back portion being provided with undercuts adapted thereto, and a clamping arrangement for clamping the bent-over ends of the fork arms behind the undercuts.
Thus, in contrast to the known arrangements mentioned above, the cleaning appliance is connected to the handle no longer in a force-locking or frictionally locking manner but primarily positively, or in shape-locking manner, and where appropriate it is possible to provide additionally a force-locking or frictionally locking effect utilizing resilience of the fork arms. Owing to the predominantly shape-locking connection, it is no longer necessary to overcome a considerable spring force when assembling and disassembling. The clamping device can operate between the fork arms and the handle, between the back portion and the fork arms, or between the back portion and the handle. The clamping device can easily be so constructed that the force which has to be applied for securing and 1~.914~4 releasing the cleaning appliance is kept within modest limits.
Features of constructional examples of the invention are mentioned in the claims and are described hereinafter with reference to the d~awings. In the drawings:
FIG. 1 shows a perspective view of a broom before the handle is assembled with it;
FIG. 2 shows a section on II-II in FIG. l;
FIG. 3 shows a section, similar to FIG. 2, of another constructional form of the invention;
FIG. 4 shows a section on IV-IV of FIG. 3;
FIG. 5 shows a section, offset by 90 relatively to FIGS. 2 and 3. through a further constructional form of the invention;
FIG. 6 shows a section, corresponding to FIGS. 2 and 3, through a fourth constructional form;
FIG. 7 shows a section, similar to the section in FIG. 6, through a fifth constructional form;
FIG. 8 shows a section, corresponding to FIGS. 2, 3, 6 and 7, through a further constructional form in the assembled position; and FIG. 9 shows a section corresponding to FIG. 8 during assembly.
Referring first to FIG. 1, this illustrates a broom comprising a handle 1 and a back portion 2 with bristles 3.
The handle 1 consists of a tube 4 and two fork-like arms 5, 6 which can be secured to the said handle and are fixed on the free end 7 of the handle 1. For example the fork arms 5, 6 are of steel wire bent in U-shaped manner, the bridge portion 10 being situated within the free end 7 of the tube 4. The tube may be pressed on to the U-shaped portion of the fork arms 5, 6.
The fork arms 5, 6 are first bent outwards to form approximately horizontal sections 9, 10, then perpendicularly 109:14~
downwards to form sections 11~ 12 and finally bent over at their free end to form further horizontal sections 13, 14.
The back portion 2 which can ~e made of wooa~ metal, plastics material or the like, has holes 15, 16 starting from its upper surface, these holes being shown in FIG. 1 as a slot 17, 18 and a substantially square or circular hole 19, 20, also referred to as "a recess". The length of the slot 17, 18 corresponds approximately to the length of the bent-over ends 13, 14, whilst its width corresponds approximately to the diameter of the steel wire forming the fork arms 5, 6. Likewise the free cross-section of the sections 19, 20 of the holes lS, 16 corresponds approximately to the diameter of the steel wire of the fork arms 5, 6. The holes 15, 16 also comprise undercuts 21, 22, as FIG. 2 shows.
The downwardly bent sections 11, 12 of the fork arms 5, 6 are provided, as FIG. 2 shows, with external screw-threads 23, 24 for respective clamping devices 25. Each device 25 ; comprises two screw-threaded sleeves 26, 27 with a knurled head 28, 29 for turning by hand. The sleeves are preferably slit 2Q æleeves which have a frictional self-locking effect.
Before assembly, the screw-threaded sleeves 26, 27 are placed approximately in their upper position. The handle 1 is introduced with the bent-over ends 13, 14 of the fork arms 5, 6 into the slot portions 17, 18 of the holes 15, 16 and then moved forwards - relatively to the view illustrated - in such a manner that the bent-over ends 13, 14 engage behind the undercuts 21, 22 on the back portion 2. Then the screw-threaded sleeves 26, 27 are screwed downwards until they abut against the upper side of the back portion 2 and finally clamp the bent-over ends 13, 14 behind the undercuts forming shoulders 21, 22. This clamping may be assisted by resilient yielding of the bent-over ends 13, 14. The back portion 2 is thus fastened securely to the handle 1. It can neither escape down-wards nor up~ards, and the bent~over ends 13, 14 also cannot slip rearwaras Cin the drawings) into the slot portions 17, 18.
Additionally the holes may comprise counter-sunk portions (not shown) for centering the sleeves in the appropriate position.
In the constructional form shown in FIG. 3, the back portion 2 and the fork arms 5, 6 are shown in the drawing; the handle itself is not shown but may be similar to the handle 1 shown in FIG. 1. The fork arms, in contrast to those of FIG. 1, are bent over to form hook-like sections 30, 31 comprising substantially two vertical sections 32, 33 and a horizontal section 34, 35 which is bent inwardly. The back portion 2 is provided with suitably shaped undercuts 21, 22 which in this case extend inwardly.
The fork arms 5, 6 are connected by a bridge 36 above the back portion 2. A projection 37 is formed on the upper ; side of the back portion 2, in the central region. Between the projection 37 and the connecting bridge 36 an eccentric element 38 is provided for clamping the fork arms.
The eccentric 38 is disc-shaped and provided at its periphery with an annular groove 39 (FIG. 4) by means of which it is guided on the one hand on the connecting bridge 36 and on the other hand on a substantially annular ridge 40 on the projection 37 of the back portion 2. The disc-shaped eccentric 38 also has a manipulating handle 41, for example in the form of a toggle handle, by means of which it can be turned about its axis between the connecting bridge 36 and the extension 37 of the back portion 2. The back portion 2 has holes 15, 16 similar to those of FIG. 1.
When the sections 30, 31 are inserted in the holes 15, 16 the eccentric 38 is in the position shown in FI~. 3. After the bent-over ends 34, 35 have been brought in behind the --` 1091404 undercuts 21, 22 on the back portion 2, the eccentric 38 is turned until its protuberances 42, 43 come to be situated between the connecting bridge 36 and the projection 37, so that the connecting bridge is pressed upwards and at the same time the bent-over ends 34, 35 are clamped behind the undercuts 21, 22 on the back portion 2.
FIG. 5 shows a constructional example wherein the back portion 2 is provided with holes 51 which comprise undercuts 52 arranged offset by 90 relatively to those of FIGS. 1 and 3.
The handle 1 again consists of a tube 4 having two parallel fork arms 5, 6 which are bent outwards at 53 substantially in the form of part of a circle. To act as the clamping device 25 there is provided a peg 54 which can be turned about its longitudinal axis, guided by means of a peripheral annular groove 55 between the bent-over portions 53 of the fork arms 5, 6. The peg 54 has an end face with a steeply sloping surface 56. The back portion is again provided with a projection, but in this case the projection 57 is of such form as to provide a supporting surface 8 extending approximately at right angles to the axis of the peg 54. The peg 54 is provided with a knurled head 59. The fork arms 5, 6 are again bent over, at their region which engages in the holes 51, to form hook-shaped sections, but these sections 60 extend from the front towards the rear.
The fork arms 5, 6 are introduced with their hook-shaped sections 60 into the holes 51 in an inclined position of the handle 1, inclined more considerably relatively to the horizontal as compared with the view shown in FIG. 5, and then the handle is tilted forwaras into the position shown in FIG. 5 . and finally the peg 54 is turned by means of the knurled head 59 until the inclined surface 56 of the end face of the peg 54 takes up approximately the position shown in FIG. 5. Because of the different inclination of the inclined surface 56 relatively to the supporting surace 58 of the projection 57 provided on the back portion 2, the hook-shaped sections 60 are clamped on the one hand behind the undercuts 52 and on the other hand against the front wall 61 of the holes 51.
The constructional forms shown in FI~S. 6 to 9, which are suitable more particularly for back portions 2 made of plastics material, differ from those described hereinbefore in that the handle 1, which may be constructed as a tubular handle or a solid handle, is not provided directly with the fork arms 5, 6 but is secured to a suitably shaped intermediate part.
In the form shown in FIG. 6 the handle 1 is screwed into the intermediate part 62, which comprises a corresponding cylindrical extension 63. The back portion 2 again has holes 15, 16 which are provided with inwardly extending undercuts 21, 22. The fork arms 5, 6 are mounted on the intermediate part 62, one fork arm 6 being composed of a vertical section 64 and a bent-over end 65 and secured to the intermediate part 62, e.g. by being injection moulded into it if the said part is made of plastics material. The other fork arm 5 also comprises a vertical section 66 and a bent-over end 67, but additionally a section 68 which is situated outside the back portion 2 and which is taken at a slight upward inclination into an inclined duct 69 in the intermediate part 62 towards the other fork arm 6, and projects with its free end 70 outwards beyond the boundary of the intermediate part. This free end 70 has an external screw thread for a knurled nut 71.
The bent-over ends 65, 67 are introduced into the holes 15, 16 of the back portion 2 in the position shown in FIG. 6.
Then the fork arm 5 is moved towards the right by turning the knurled nut 71 until both the bent-over ends 65, 67 engage behind the undercuts. By further tightening, the intermediate part 62 is secureI~ clamped to the back portion 2.
In FIG. 7 the intermed$ate part:62 comprises a cylindrical extension 63 for receiving the free end of the handle 1. In this case the intermeaiate part 62 is provided with approxim-ately symmetrically arranged channels 72, 73 which are taken inwards from the outside in a slightly upwardly inclined manner and ~iden out in the central region to form a chamber 73.
The ork arms 5, 6 comprise inclined sections 74, 75 : within the channels 72, 73, also vertical sections 11, 12 and inwardly bent-over ends 13, 14. The sections 74, 75 are crossed over in the chamber 73 so that they overlap one another. The ends are again bent upwards to form approximately vertical upper end sections 76, 77, which are situated in the chamber 73. Between the upper end sections 76, 77 there is arranged as a clamping device an eccentric 78 which is mounted in the side walls (not shown) of the intermediate part 62 and is provided with a manipulating handle which is also not shown and which is or example in the form of a toggle handle or the like.
The fork arms 5, 6 are introduced into the holes 15, 16 in the back portion 2 in the position shown in FIG. 7, the intermediate part 62 bearing against the upper side of the back portion 2. By turnîng the eccentric 78, the protuberances 79 of the said eccentric come into engagement with the upper end sections 76, 77 of the fork arms 5, 6 so that these are moved outwards and at the same time the vertical sections 11, 12 are moved towards one another and the bent-over ends 13, 14 engage behind the undercuts 21, 22 of the holes 15, 16. Since the bent-over ends 13, 14 are lifted up at the same time because of the inclined ducts 72, 73, the bent-over ends 13, 14 are clamped behind the undercuts 21, 22.
The constructional form shown in FIG. 8 and FIG. 9 comprises an intermediate part 80 which is mounted by means of a _ g _ ~091404 part~circular end face 81 in a correspondingly part-circular recess 82 situatea in the back portion 2. The intermediate part 80 compr~ses pins 83, 84 which are situated at approxim-ately the same heig~t (i.e. distance from the end face 81) but With a spacing in the horizontal direction from one another.
The upper ends of the fork arms 5, 6 have eyes 85 86 by which they are mounted on the pins 83, 84 so as to be freely rotatable.
The fork arms 5, 6 overlap one another, that is to say the pin 83 of the right-hand fork arm 6 is situated at the left of the pin 84 of the left-hand fork arm 5. These fork arms 5, 6 again have vertical sections 11, 12 and inwardly bent-over ends 13, 14. The back portion 2 comprises holes 87, 88 which consist of a slot portion and a circular or square hole (see preceding constructional forms). The holes 87, 88 also comprise inward undercuts 21, 22.
Before assembly, the handle 1 with the intermediate part 80 is brought into an inclined position such as is shown for example in FIG. 9. As a result the horizontal spacing of the pivot pins 83, 84 is shortened so that the fork arms 5, 6 move outwards and can be introduced with their bent-over ends into the holes 87, 88 from above. When the handle 1 is brought into its normal position shown in FIG. 8, the spacing of the bent-over ends 13, 14 from one another is shortened so that these engage behind the undercuts 21, 22. In order to fix the handle 1 in the position shown in FIG. 8, it is possible to provide on the intermediate part 80 an arresting element 89 which for example engages over the upper fork arm 5. This arresting element 89 can consist of a dog, a spring cam, a grub-screw or the like.
There are known fastening devices (German Patent Specifi-cation 439 643, German Utility Model 7 028 080, German Utility Model 7 223 614) constructed in this way which comprise fork arms extending in the first instance parallel to the handle, the said arms being bent outwards directly above the back portion, taken outwards horizontally above the back portion and then bent again into the vertical position and inserted in the holes in the back portion. In order to clamp these fork arms to the back portion, spring means are provided, for example in the form of a helically coiled spring, the two ends of which are of different lengths extending tangentially from the coiled portion which is put on the horizontal portion of one of the fork arms, the shorter end being inserted into an additional hole in the back portion, and the longer end being engaged behind one of the parallel-extending sections of the fork arms.
Usually two such springs are provided, each of the two fork arms being associated with a respective spring. Because of the spring force the ends of the fork arms which engage in the holes in the back portion are pressed against the internal cavity of the hole and thereby secured.
Fastening the cleaning appliance to the handle in this way presents some difficulties, since on the one hand operating instructions have to be supplied to the user and on the other hand a considerable amount of force is required for assembly or disassembly. The spring force has to be made relatively strong in order to hold the cleaning appliance securely, with the result that this spring force has to be overcome by hand when assembling and disassembling. For this reason it is very difficult for the housewife, for example, to replace a worn-out cleaning appliance or to interchange different appliances.
Furthermore this way of fastening the handle is not very satisfactory from the external appearance point of view.
An o~ject of the present invention is to provide a constructionally simple arrangement which is easy to assemble and can be so designed as to have a good external appearance.
According to the present invention there is provided a device for releasably fastening a handle to a cleaning appliance comprising a body which includes a back portion having an upper side to which the handle is to be fastened, said device compris-ing two fork-like arms for engagement in holes provided in the back portion of the cleaning appliance, at the upper side of said portion, the free ends of the fork arms being bent over and the holes in the back portion being provided with undercuts adapted thereto, and a clamping arrangement for clamping the bent-over ends of the fork arms behind the undercuts.
Thus, in contrast to the known arrangements mentioned above, the cleaning appliance is connected to the handle no longer in a force-locking or frictionally locking manner but primarily positively, or in shape-locking manner, and where appropriate it is possible to provide additionally a force-locking or frictionally locking effect utilizing resilience of the fork arms. Owing to the predominantly shape-locking connection, it is no longer necessary to overcome a considerable spring force when assembling and disassembling. The clamping device can operate between the fork arms and the handle, between the back portion and the fork arms, or between the back portion and the handle. The clamping device can easily be so constructed that the force which has to be applied for securing and 1~.914~4 releasing the cleaning appliance is kept within modest limits.
Features of constructional examples of the invention are mentioned in the claims and are described hereinafter with reference to the d~awings. In the drawings:
FIG. 1 shows a perspective view of a broom before the handle is assembled with it;
FIG. 2 shows a section on II-II in FIG. l;
FIG. 3 shows a section, similar to FIG. 2, of another constructional form of the invention;
FIG. 4 shows a section on IV-IV of FIG. 3;
FIG. 5 shows a section, offset by 90 relatively to FIGS. 2 and 3. through a further constructional form of the invention;
FIG. 6 shows a section, corresponding to FIGS. 2 and 3, through a fourth constructional form;
FIG. 7 shows a section, similar to the section in FIG. 6, through a fifth constructional form;
FIG. 8 shows a section, corresponding to FIGS. 2, 3, 6 and 7, through a further constructional form in the assembled position; and FIG. 9 shows a section corresponding to FIG. 8 during assembly.
Referring first to FIG. 1, this illustrates a broom comprising a handle 1 and a back portion 2 with bristles 3.
The handle 1 consists of a tube 4 and two fork-like arms 5, 6 which can be secured to the said handle and are fixed on the free end 7 of the handle 1. For example the fork arms 5, 6 are of steel wire bent in U-shaped manner, the bridge portion 10 being situated within the free end 7 of the tube 4. The tube may be pressed on to the U-shaped portion of the fork arms 5, 6.
The fork arms 5, 6 are first bent outwards to form approximately horizontal sections 9, 10, then perpendicularly 109:14~
downwards to form sections 11~ 12 and finally bent over at their free end to form further horizontal sections 13, 14.
The back portion 2 which can ~e made of wooa~ metal, plastics material or the like, has holes 15, 16 starting from its upper surface, these holes being shown in FIG. 1 as a slot 17, 18 and a substantially square or circular hole 19, 20, also referred to as "a recess". The length of the slot 17, 18 corresponds approximately to the length of the bent-over ends 13, 14, whilst its width corresponds approximately to the diameter of the steel wire forming the fork arms 5, 6. Likewise the free cross-section of the sections 19, 20 of the holes lS, 16 corresponds approximately to the diameter of the steel wire of the fork arms 5, 6. The holes 15, 16 also comprise undercuts 21, 22, as FIG. 2 shows.
The downwardly bent sections 11, 12 of the fork arms 5, 6 are provided, as FIG. 2 shows, with external screw-threads 23, 24 for respective clamping devices 25. Each device 25 ; comprises two screw-threaded sleeves 26, 27 with a knurled head 28, 29 for turning by hand. The sleeves are preferably slit 2Q æleeves which have a frictional self-locking effect.
Before assembly, the screw-threaded sleeves 26, 27 are placed approximately in their upper position. The handle 1 is introduced with the bent-over ends 13, 14 of the fork arms 5, 6 into the slot portions 17, 18 of the holes 15, 16 and then moved forwards - relatively to the view illustrated - in such a manner that the bent-over ends 13, 14 engage behind the undercuts 21, 22 on the back portion 2. Then the screw-threaded sleeves 26, 27 are screwed downwards until they abut against the upper side of the back portion 2 and finally clamp the bent-over ends 13, 14 behind the undercuts forming shoulders 21, 22. This clamping may be assisted by resilient yielding of the bent-over ends 13, 14. The back portion 2 is thus fastened securely to the handle 1. It can neither escape down-wards nor up~ards, and the bent~over ends 13, 14 also cannot slip rearwaras Cin the drawings) into the slot portions 17, 18.
Additionally the holes may comprise counter-sunk portions (not shown) for centering the sleeves in the appropriate position.
In the constructional form shown in FIG. 3, the back portion 2 and the fork arms 5, 6 are shown in the drawing; the handle itself is not shown but may be similar to the handle 1 shown in FIG. 1. The fork arms, in contrast to those of FIG. 1, are bent over to form hook-like sections 30, 31 comprising substantially two vertical sections 32, 33 and a horizontal section 34, 35 which is bent inwardly. The back portion 2 is provided with suitably shaped undercuts 21, 22 which in this case extend inwardly.
The fork arms 5, 6 are connected by a bridge 36 above the back portion 2. A projection 37 is formed on the upper ; side of the back portion 2, in the central region. Between the projection 37 and the connecting bridge 36 an eccentric element 38 is provided for clamping the fork arms.
The eccentric 38 is disc-shaped and provided at its periphery with an annular groove 39 (FIG. 4) by means of which it is guided on the one hand on the connecting bridge 36 and on the other hand on a substantially annular ridge 40 on the projection 37 of the back portion 2. The disc-shaped eccentric 38 also has a manipulating handle 41, for example in the form of a toggle handle, by means of which it can be turned about its axis between the connecting bridge 36 and the extension 37 of the back portion 2. The back portion 2 has holes 15, 16 similar to those of FIG. 1.
When the sections 30, 31 are inserted in the holes 15, 16 the eccentric 38 is in the position shown in FI~. 3. After the bent-over ends 34, 35 have been brought in behind the --` 1091404 undercuts 21, 22 on the back portion 2, the eccentric 38 is turned until its protuberances 42, 43 come to be situated between the connecting bridge 36 and the projection 37, so that the connecting bridge is pressed upwards and at the same time the bent-over ends 34, 35 are clamped behind the undercuts 21, 22 on the back portion 2.
FIG. 5 shows a constructional example wherein the back portion 2 is provided with holes 51 which comprise undercuts 52 arranged offset by 90 relatively to those of FIGS. 1 and 3.
The handle 1 again consists of a tube 4 having two parallel fork arms 5, 6 which are bent outwards at 53 substantially in the form of part of a circle. To act as the clamping device 25 there is provided a peg 54 which can be turned about its longitudinal axis, guided by means of a peripheral annular groove 55 between the bent-over portions 53 of the fork arms 5, 6. The peg 54 has an end face with a steeply sloping surface 56. The back portion is again provided with a projection, but in this case the projection 57 is of such form as to provide a supporting surface 8 extending approximately at right angles to the axis of the peg 54. The peg 54 is provided with a knurled head 59. The fork arms 5, 6 are again bent over, at their region which engages in the holes 51, to form hook-shaped sections, but these sections 60 extend from the front towards the rear.
The fork arms 5, 6 are introduced with their hook-shaped sections 60 into the holes 51 in an inclined position of the handle 1, inclined more considerably relatively to the horizontal as compared with the view shown in FIG. 5, and then the handle is tilted forwaras into the position shown in FIG. 5 . and finally the peg 54 is turned by means of the knurled head 59 until the inclined surface 56 of the end face of the peg 54 takes up approximately the position shown in FIG. 5. Because of the different inclination of the inclined surface 56 relatively to the supporting surace 58 of the projection 57 provided on the back portion 2, the hook-shaped sections 60 are clamped on the one hand behind the undercuts 52 and on the other hand against the front wall 61 of the holes 51.
The constructional forms shown in FI~S. 6 to 9, which are suitable more particularly for back portions 2 made of plastics material, differ from those described hereinbefore in that the handle 1, which may be constructed as a tubular handle or a solid handle, is not provided directly with the fork arms 5, 6 but is secured to a suitably shaped intermediate part.
In the form shown in FIG. 6 the handle 1 is screwed into the intermediate part 62, which comprises a corresponding cylindrical extension 63. The back portion 2 again has holes 15, 16 which are provided with inwardly extending undercuts 21, 22. The fork arms 5, 6 are mounted on the intermediate part 62, one fork arm 6 being composed of a vertical section 64 and a bent-over end 65 and secured to the intermediate part 62, e.g. by being injection moulded into it if the said part is made of plastics material. The other fork arm 5 also comprises a vertical section 66 and a bent-over end 67, but additionally a section 68 which is situated outside the back portion 2 and which is taken at a slight upward inclination into an inclined duct 69 in the intermediate part 62 towards the other fork arm 6, and projects with its free end 70 outwards beyond the boundary of the intermediate part. This free end 70 has an external screw thread for a knurled nut 71.
The bent-over ends 65, 67 are introduced into the holes 15, 16 of the back portion 2 in the position shown in FIG. 6.
Then the fork arm 5 is moved towards the right by turning the knurled nut 71 until both the bent-over ends 65, 67 engage behind the undercuts. By further tightening, the intermediate part 62 is secureI~ clamped to the back portion 2.
In FIG. 7 the intermed$ate part:62 comprises a cylindrical extension 63 for receiving the free end of the handle 1. In this case the intermeaiate part 62 is provided with approxim-ately symmetrically arranged channels 72, 73 which are taken inwards from the outside in a slightly upwardly inclined manner and ~iden out in the central region to form a chamber 73.
The ork arms 5, 6 comprise inclined sections 74, 75 : within the channels 72, 73, also vertical sections 11, 12 and inwardly bent-over ends 13, 14. The sections 74, 75 are crossed over in the chamber 73 so that they overlap one another. The ends are again bent upwards to form approximately vertical upper end sections 76, 77, which are situated in the chamber 73. Between the upper end sections 76, 77 there is arranged as a clamping device an eccentric 78 which is mounted in the side walls (not shown) of the intermediate part 62 and is provided with a manipulating handle which is also not shown and which is or example in the form of a toggle handle or the like.
The fork arms 5, 6 are introduced into the holes 15, 16 in the back portion 2 in the position shown in FIG. 7, the intermediate part 62 bearing against the upper side of the back portion 2. By turnîng the eccentric 78, the protuberances 79 of the said eccentric come into engagement with the upper end sections 76, 77 of the fork arms 5, 6 so that these are moved outwards and at the same time the vertical sections 11, 12 are moved towards one another and the bent-over ends 13, 14 engage behind the undercuts 21, 22 of the holes 15, 16. Since the bent-over ends 13, 14 are lifted up at the same time because of the inclined ducts 72, 73, the bent-over ends 13, 14 are clamped behind the undercuts 21, 22.
The constructional form shown in FIG. 8 and FIG. 9 comprises an intermediate part 80 which is mounted by means of a _ g _ ~091404 part~circular end face 81 in a correspondingly part-circular recess 82 situatea in the back portion 2. The intermediate part 80 compr~ses pins 83, 84 which are situated at approxim-ately the same heig~t (i.e. distance from the end face 81) but With a spacing in the horizontal direction from one another.
The upper ends of the fork arms 5, 6 have eyes 85 86 by which they are mounted on the pins 83, 84 so as to be freely rotatable.
The fork arms 5, 6 overlap one another, that is to say the pin 83 of the right-hand fork arm 6 is situated at the left of the pin 84 of the left-hand fork arm 5. These fork arms 5, 6 again have vertical sections 11, 12 and inwardly bent-over ends 13, 14. The back portion 2 comprises holes 87, 88 which consist of a slot portion and a circular or square hole (see preceding constructional forms). The holes 87, 88 also comprise inward undercuts 21, 22.
Before assembly, the handle 1 with the intermediate part 80 is brought into an inclined position such as is shown for example in FIG. 9. As a result the horizontal spacing of the pivot pins 83, 84 is shortened so that the fork arms 5, 6 move outwards and can be introduced with their bent-over ends into the holes 87, 88 from above. When the handle 1 is brought into its normal position shown in FIG. 8, the spacing of the bent-over ends 13, 14 from one another is shortened so that these engage behind the undercuts 21, 22. In order to fix the handle 1 in the position shown in FIG. 8, it is possible to provide on the intermediate part 80 an arresting element 89 which for example engages over the upper fork arm 5. This arresting element 89 can consist of a dog, a spring cam, a grub-screw or the like.
Claims (12)
1. A device for releasably fastening a handle to an appliance which appliance includes a body having a back portion, said back portion having an upper side to which the handle is to be fastened and a lower side provided with cleaning means, said device comprising: two fork-like arms having each a free end which is bent outwardly or inwardly, said free ends of the fork-like arms being adapted for engagement with holes provided in the upper side of the back portion of the cleaning appliance, said holes including each a slot-shaped portion the length of which generally corresponds to the length of the respective bent free end and the width of which substantially corresponds to the diameter of the respective fork-like arm, each hole further includes a recess portion adjacent to and communicating with the respective slot portion, the size of each recess portion generally corresponding to the diameter of the respective fork-like arm, and said holes being each provided with an undercut defining a shoulder, and clamping means for clamping the bent free ends of the fork arms adjacent the shoulders.
2. The device of claim 1, in which the clamping arrange-ment comprises screw-threaded sleeves which are provided on externally screw-threaded sections of the fork arms and bear against the upper side of the back portion adjacent the holes.
3. The device of claim 2, in which the screw-threaded sleeves are slit sleeves.
4. The device of claim 1, in which the fork arms are connected to one another above the back portion by a connecting portion, and the clamping device comprises an eccentric which acts between the said connecting portion and the upper side of the back portion.
5. The device of claim 4, in which the back portion comprises at its upper side a guide for the eccentric.
6. The device of claim 4 or 5, in which the eccentric has a guide co-operating with the connecting portion of the fork arms.
7. The device of claim 1, in which the clamping device comprises a rotatable peg which is mounted between the fork arms and has an end face with an inclined surface, and there is formed on said back portion a projection with a supporting surface extending approximately at right-angles to the axis of the said peg, the said peg abutting with its end face against the said projection.
8. The device of claim 7, in which the said peg has an annular groove by means of which it is guided between the fork arms.
9. The device of claim 1, in which the fork arms extend outside the back portion upwardly inclined relatively to the upper side of the said back portion towards a central region and cross over one another in that region to extend approximately vertically upwards, and are arranged in an intermediate part placed on the handle, the said part including guide channels which are inclined upwardly to suit the inclined sections of the fork arms, and also including a chamber for the upwardly extending sections, the said clamping arrangement comprising an eccentric which is mounted for rotation in the chamber between the upwardly extending sections of the fork arms.
10. The device of claim 1, in which at the handle end there is provided an intermediate part on which there is fixed one of the fork arms which extends approximately vertically, whilst the other fork arm has a section which extends outside the said back portion towards the first fork arm with an upward inclination within a channel in the intermediate part, the said other fork arm being displaceable by means of the clamping arrangement to reduce the spacing between the two bent-over ends of the fork arms.
11. The device of claim 10, in which a free end of the said inclined section extends out of the intermediate part and has an external screw thread on which there is provided a knurled nut which serves as a clamping device bearing against the outside of the intermediate part.
12. The device of claim 1, in which the two fork arms comprise sections which extend towards the middle of the back portion and approximately parallel thereto and which overlap there, the said sections being mounted at their ends on pivot bearing elements to be freely pivotable on the handle, the pivot bearing element of the right-hand fork arm being situated at the left of the pivot bearing element of the left-hand fork arm and both bearings being situated at approximately the same height, the clamping arrangement comprising an arresting element which fixes the mutually overlapping sections in a substantially parallel position relatively to the back portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762655304 DE2655304A1 (en) | 1976-12-07 | 1976-12-07 | DETACHABLE HANDLE FASTENING FOR CLEANING EQUIPMENT SUCH AS BROOMS, SCRUBBERS, WINDOW WIPERS OR THE LIKE. |
| DEP2655304.8 | 1976-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1091404A true CA1091404A (en) | 1980-12-16 |
Family
ID=5994842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA291,878A Expired CA1091404A (en) | 1976-12-07 | 1977-11-28 | Releasable handle fastening for a cleaning appliance |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5372372A (en) |
| BE (1) | BE861474A (en) |
| CA (1) | CA1091404A (en) |
| CH (1) | CH625153A5 (en) |
| DE (1) | DE2655304A1 (en) |
| FR (1) | FR2373365A1 (en) |
| GB (1) | GB1593666A (en) |
| IT (1) | IT1090599B (en) |
| NL (1) | NL7712162A (en) |
| SE (1) | SE7713355L (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2846144C2 (en) * | 1978-10-23 | 1982-02-11 | Roman Dietsche KG, 7868 Todtnau | Device for the detachable fastening of cleaning devices |
| DE2921438C2 (en) * | 1979-05-26 | 1983-10-13 | Roman Dietsche KG, 7868 Todtnau | Detachable handle attachment for device bodies, in particular for brooms, scrubbers or the like. |
| DE3113221A1 (en) * | 1981-04-02 | 1982-10-21 | Roman Dietsche KG, 7868 Todtnau | DETACHABLE HANDLE MOUNT FOR BROOMS OR SCRUBBERS |
| DE3308494A1 (en) * | 1983-03-10 | 1984-09-13 | Coronet - Werke Heinrich Schlerf Gmbh, 6948 Wald-Michelbach | DEVICE FOR SOLVELY FASTENING CLEANING DEVICES ON A STICK |
| JPS61188559U (en) * | 1985-05-13 | 1986-11-25 | ||
| SE526385C2 (en) * | 2004-02-10 | 2005-09-06 | Act Ab | Work tools with changeable joint brake |
| DE102006034321A1 (en) * | 2006-07-21 | 2008-01-24 | Bürstenmann GmbH | Connection system for stalk-guided handsets |
| DE102007005660B4 (en) * | 2007-01-31 | 2014-09-25 | Noelle Group Gmbh & Co. Kg | Device for releasably attaching a cleaning device |
| CN102934973A (en) * | 2012-11-27 | 2013-02-20 | 杨雨沁 | Convenient mop |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1757882A (en) * | 1928-01-04 | 1930-05-06 | Ernest F Sill | Hoe |
-
1976
- 1976-12-07 DE DE19762655304 patent/DE2655304A1/en not_active Withdrawn
-
1977
- 1977-11-03 NL NL7712162A patent/NL7712162A/en unknown
- 1977-11-24 CH CH1439277A patent/CH625153A5/en not_active IP Right Cessation
- 1977-11-25 GB GB49203/77A patent/GB1593666A/en not_active Expired
- 1977-11-25 SE SE7713355A patent/SE7713355L/en unknown
- 1977-11-28 IT IT51978/77A patent/IT1090599B/en active
- 1977-11-28 CA CA291,878A patent/CA1091404A/en not_active Expired
- 1977-11-28 FR FR7735782A patent/FR2373365A1/en not_active Withdrawn
- 1977-12-05 BE BE2056489A patent/BE861474A/en unknown
- 1977-12-05 JP JP14599477A patent/JPS5372372A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE861474A (en) | 1978-03-31 |
| SE7713355L (en) | 1978-06-07 |
| NL7712162A (en) | 1978-06-09 |
| FR2373365A1 (en) | 1978-07-07 |
| DE2655304A1 (en) | 1978-06-08 |
| GB1593666A (en) | 1981-07-22 |
| JPS5372372A (en) | 1978-06-27 |
| CH625153A5 (en) | 1981-09-15 |
| IT1090599B (en) | 1985-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |