WO2005108015A1 - A locking mechanism for a telescopic handle - Google Patents

A locking mechanism for a telescopic handle Download PDF

Info

Publication number
WO2005108015A1
WO2005108015A1 PCT/DK2005/000308 DK2005000308W WO2005108015A1 WO 2005108015 A1 WO2005108015 A1 WO 2005108015A1 DK 2005000308 W DK2005000308 W DK 2005000308W WO 2005108015 A1 WO2005108015 A1 WO 2005108015A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner member
telescopic handle
locking
locking mechanism
deactivation
Prior art date
Application number
PCT/DK2005/000308
Other languages
French (fr)
Inventor
Poul Toft
Original Assignee
Vikan A/S
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vikan A/S filed Critical Vikan A/S
Publication of WO2005108015A1 publication Critical patent/WO2005108015A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/04—Handle constructions telescopic; extensible; sectional
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1463—Telescoping systems locking in intermediate non-discrete positions with the expansion of an element inside the outer telescoping member due to the axial movement towards a wedge or a conical member

Definitions

  • This invention relates to a telescopic handle, where said handle comprises an outer elongated hollow member with a grip part, said outer member slideably receives an end of an inner elongated member whereby a part of said inner member extends out of said outer hollow member.
  • the length of said telescopic handle can be adjusted by sliding said inner member within said outer member, thereby changing the length of said part of the inner member extending out of said outer member.
  • the telescopic handle further comprises a locking mechanism which, when activated, fixates said inner member in a specific position relative to the outer member.
  • telescopic handles for devices such as cleaning tools or painting tools.
  • the length of the handle is adjustable, whereby a user can easily adjust the length to optimize the comfort of using the device. This could e.g. be of interest when washing windows to obtain a desired length of the handle, whereby a window is reachable. Another use could be adjusting the length of the handle optimizing the usage comfort to the size of the person using the handle.
  • a telescopic handle typically has an outer tubular member, which slidably receives an inner tubular member within it, and where the inner tubular member can be locked at different positions resulting in different handle lengths.
  • One known way of locking the telescopic handle could be by letting the end of the outer member, from which the inner member projects, have a screw threaded fitting with a rubber clamping ring. With the fitting unlocked, the inner member can be moved to its desired degree of extension relative to the outer member. By locking the fitting, the ring is firmly clamped against the inner member to lock it in the desired extended position. The degree of extension is thus infinitely variable between a minimum and a maximum extension. The locking is performed by twisting the outer member relative to the inner member, which requires that the user with one hand holds and twists the outer member while using the other hand for holding the inner member.
  • the disadvantage in this method of locking the telescopic handle is the un- pleasant physical action that is necessary to adjust the length, requiring the user to bend down to use one hand for fixing the lower inner member, while using the other hand to perform the twist of the outer member until the fitting of the outer member is firmly clamped against the inner member.
  • a powerful twisting movement of the wrist is required, and such a movement can be very weary for the user.
  • This is especially a problem when, during use of the handle, the length is to be adjusted several times over a short time period, e.g. when washing windows or painting at varying heights.
  • a further problem with this type of locking mechanism is that when the shaft is used in tools, which are also being twisted in use, such as e.g. a floor mopping tool, the telescopic handle could accidentally be unlocked because of twisting or rotational movements of the mopping tool.
  • a locking mechanism comprising a locking part for fixating said inner member in a specific position relative to the hollow member when said locking mechanism is activated and a deactivation part for deactivating said locking mechanism
  • said locking part is fixed relative to said outer member, and said locking mechanism is activated when said locking part is fixating said inner member because of engagement of engagement means of said locking part with the surface of said inner member,
  • said deactivation part is positioned at the grip part of said telescopic handle and connected to said locking part, whereby said deactivation part deacti- vates the locking mechanism when pressured in a direction substantially parallel to the telescopic handle.
  • the action of deactivating and activating the locking mechanism is gentler for the user, because of the pressure direction being parallel to the telescopic handle.
  • the pressure is applied in a direction, in which the user is already pressuring for handling a tool such as a mopping tool or a painting tool.
  • the user can easily perform the length adjustment during use and does not have to stop the usage, when adjusting the length.
  • the length can also be adjusted without a substantial change of the grip on the handle. All of the above results in an adjustment process, which minimizes the physical wear on the user.
  • said deactivation part is a button positioned at the end of the grip part of the outer member.
  • fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained by a friction between a surface on the engagement means and the surface of said inner member.
  • the surface of the engagement means could be a material of high friction, such as rubber.
  • fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained by protrusion of members on the locking part with corresponding holes on the inner mem- ber.
  • the inner member is hollow having an outer and inner surface, and wherein said locking part is positioned on the inside of said inner member and is adapted for fixating said inner member by interacting with the inner surface of said outer member because of engagement of engagement means of said locking part with the inner surface of the outer inner member.
  • said button is connected to the locking part via a stick, whereby the movement of said stick, and therefore the locking part parallel to the telescopic handle, deactivates or activates said locking mechanism.
  • said deactivation part is connected to the engagement means of the locking part via a spring system whereby said locking mechanism is activated through the release of the spring energy stored in the spring system when the deactivation means is no longer pressured in a direction substantially parallel to the telescopic handle.
  • Figure 1 shows a telescopic handle according to the present invention
  • Figure 2 shows a cross section of the telescopic handle shown in Fig. 1 ,
  • Figure 3 (a) and (b) show a side view of the outer elongated hollow member shown in Fig. 1 , whereby the inner and the outer elongated hollow members are shown in an activated position,
  • Figure 4 (a) and (b) show a side view of the outer elongated hollow member shown in Fig. 1 , whereby the inner and the outer elongated hollow members are shown in a deactivated position,
  • Figure 5 shows a perspective view of the grip part
  • Figure 6 shows a perspective view of the locking part also showing the stick rod and a tracker, which is mounted to a rod.
  • Figure 1 shows a telescopic handle (1 ) according to the present invention, comprising an outer elongated hollow member (2) having a grip part (6) and an open-end (7) and an inner elongated member (3) slideably received in the outer elongated hollow member (2), where at least a part of the inner member (3) extends out of said open-end (7).
  • a locking mechanism provides a length adjustment of the telescopic handle (1 ), which, when activated, fixates said inner member (3) in a specific position relative to the outer hollow mem- ber (2).
  • a deactivation part (4) positioned at the grip part (6) is adapted to deactivate a locking mechanism by pressing the deactivation part (4) with a force in a direction (17) substantially parallel to the telescopic handle (1 ).
  • the inner elongated member (3) is movable within the outer elongated hollow member (2), whereby a length adjustment of the telescopic handle (1 ) is possible.
  • the deactivation is provided by holding the deactivation part (4) in a deactivating position, i.e. by maintaining said force. In another embodiment the deactivation is provided by means of pressing the deactivation part (4) once resulting in that the deactivate position is obtained.
  • the position of the deactivation part (4) may be situated elsewhere, shown in Fig. 1 , but preferably close to the grip part (6) to make the length adjustment feature more comfortable.
  • Figure 2 shows a cross section of the telescopic handle shown in Fig. 1 , showing the deactivation part (4), the stopper (8), and a stick (11 ) there between for connection the deactivation part (4) and the stopper (8).
  • the deactivation part (4) By pressing the deactivation part (4) the movement of the stick becomes parallel to the telescopic handle, which results in a deactivation or activation of said locking mechanism.
  • the action of deactivating and activating the locking mechanism is gentler for the user, because of the pressure direction being parallel to the telescopic handle. More details of the functionality of the locking mechanism will be discussed in more details in Figs. 3-6.
  • Figure 3 (a) and (b) show a side view of the outer member (2) shown in Fig. 1 , whereby the inner (3) and the outer (2) elongated hollow members are shown in an activated position.
  • the intermediate part is not shown here.
  • a part of the locking mechanism showing the deactivation part (4), the locking part (8), a housing (9) that is mounted to the outer member (2) in a fixed position for housing said stick and a spring (5).
  • the spring (5) is pref- erably mounted to the end of the housing (9) and the deactivation part (4).
  • Figure 3 (a) shows the outer elongated member (2) and the inner elongated member (3) arranged inside thereof.
  • the locking part (8) engages the inner elongated member (3) through the two slots (10) in the housing (9).
  • the fixation between the outer elongated member (2) and the inner elongated member (3) is obtained through a friction force or a combination of friction and force towards the second housing member (3).
  • the material of the locking part (8) at the surface of the locking part (8) is preferably a material of high friction, e.g. rubber, or a material hav- ing a surface with high friction, e.g. one having a rough surface.
  • the larger the surface is of the locking part (8) the larger is the friction force. Therefore, the size of the surface and the material is adjusted to the necessary friction force.
  • the locking part (8) is obtained by a protrusion of members on the locking part with corresponding holes on the inner member.
  • This can be one or more pins or similar means to engage an aperture or gap in the inner elongated member (3) substantially of the same shape as said aperture or gap.
  • the shown locking part (8) has a substantially rectangular surface that is facing the inner (3) member and is attached to the housing (9) through an elastic material (10), which allows the mobility that is needed to obtain the different positions shown in Figs. 3 and 4.
  • Figure 4 (a) and (b) show a side view of the outer member (2) shown in Fig. 1 , whereby the inner (3) and the outer (2) elongated hollow members are shown in a deactivated position where the inner hollow elongated member (3) is placed slideably within the outer hollow elongated member (2).
  • Figure 4 (b) shows the deactivation part (4) being pressed inwards as indicated by the arrow (18). Simultaneously, the spring (5) becomes compressed. The force resulting from the pressure is transferred through the stick towards the locking part (8) resulting in retracting the locking parts (8) from the active position (locking position) to a deactivate position (unlocking position).
  • the deactivation part (4) is pressed inwards as indicated by the arrows (19) and maintained, the deactivate position of the locking parts (8) is maintained, and thereby the length adjustment of the telescopic handle (1 ) is possible.
  • the deactivated position is transferred to an activated position as shown in Fig. 3 through the release of the spring energy.
  • a mechanism could be provided to hold the deactivation part (4) locked in this position.
  • the fixation between the inner and the outer member could be released by pressing the deactivation part (4) again.
  • Figure 5 shows a perspective view of the grip part (6) and additionally the spring (5), the housing (9) and the stick (11 ) between the deactivation part (4) and the locking parts (8).
  • the stick (11 ) comprises a rod, which may be made of e.g. metal or a plastic material.
  • Figure 6 shows a perspective of the locking parts (8) also showing the stick (11 ) and a tracker (14), which is mounted to a rod (11 ).
  • the locking part (8) comprises two of the same "brake” pads (8) arranged along the inner elongated member (3) and opposite to each other, whereby their distal sur- faces are concave and follow the shape of the inner surface of the inner elongated member (3) and arranged substantially parallel to said shaft.
  • the inner surfaces of two of the like "brake” pads (8) comprise an incline and decline grooves (20) adapted for engaging with the tracker (14).
  • the tracker (14) has a v-shape to engage with the grooves (20).
  • the cross section of the outer elongated hollow member (2) and the inner elongated member (3) is axis symmetric to the housing members (2,3).
  • Other cross section symmetries are also possible, e.g. elliptical, rectangular etc.
  • the inner elongated member (3) is hollow inside. This is mainly to reduce the weight of the telescopic handle (1 ).
  • the material to be used is preferably a material that has low mass density but simultaneously has the necessary strength, such as e.g. a plastic material.
  • the number of elongated member is more than two, whereby the locking mechanism is adapted in two or more elongated mem- bers.

Abstract

The invention relates to a telescopic handle (1), where said handle comprises an outer elongated hollow member (2) with a grip part (6), and where said outer member slideably receives an end of an inner elongated member (3), whereby a part of said inner member extends out of said outer hollow member. The length of said telescopic handle can be adjusted by sliding said inner member within said outer member, thereby changing the length of said part of the inner member extending out of said outer member. The telescopic handle further comprises a locking mechanism, which, when activated, fixates said inner member in a specific position relative to the outer member. The locking mechanism comprises a locking part for fixating said inner member in a specific position relative to the hollow member when said locking mechanism is activated and a deactivation part (4) for deactivating said locking mechanism. The locking part is fixed relative to said outer member, and said locking mechanism is activated when said locking part is fixating said inner member because of engagement of engagement means of said locking part with the surface of said inner member. The deactivation part is positioned at the grip part of said telescopic handle and connected to said locking part, whereby said deactivation part deactivates the locking mechanism when pressured in a direction substantially parallel to the telescopic handle.

Description

A LOCKING MECHANISM FOR A TELESCOPIC HANDLE
FIELD OF THE INVENTION
This invention relates to a telescopic handle, where said handle comprises an outer elongated hollow member with a grip part, said outer member slideably receives an end of an inner elongated member whereby a part of said inner member extends out of said outer hollow member. The length of said telescopic handle can be adjusted by sliding said inner member within said outer member, thereby changing the length of said part of the inner member extending out of said outer member. The telescopic handle further comprises a locking mechanism which, when activated, fixates said inner member in a specific position relative to the outer member.
BACKGROUND It is known to use telescopic handles for devices such as cleaning tools or painting tools. In telescopic handles the length of the handle is adjustable, whereby a user can easily adjust the length to optimize the comfort of using the device. This could e.g. be of interest when washing windows to obtain a desired length of the handle, whereby a window is reachable. Another use could be adjusting the length of the handle optimizing the usage comfort to the size of the person using the handle. A telescopic handle typically has an outer tubular member, which slidably receives an inner tubular member within it, and where the inner tubular member can be locked at different positions resulting in different handle lengths.
One known way of locking the telescopic handle could be by letting the end of the outer member, from which the inner member projects, have a screw threaded fitting with a rubber clamping ring. With the fitting unlocked, the inner member can be moved to its desired degree of extension relative to the outer member. By locking the fitting, the ring is firmly clamped against the inner member to lock it in the desired extended position. The degree of extension is thus infinitely variable between a minimum and a maximum extension. The locking is performed by twisting the outer member relative to the inner member, which requires that the user with one hand holds and twists the outer member while using the other hand for holding the inner member.
The disadvantage in this method of locking the telescopic handle is the un- pleasant physical action that is necessary to adjust the length, requiring the user to bend down to use one hand for fixing the lower inner member, while using the other hand to perform the twist of the outer member until the fitting of the outer member is firmly clamped against the inner member. To ensure that the handle is really locked, a powerful twisting movement of the wrist is required, and such a movement can be very weary for the user. This is especially a problem when, during use of the handle, the length is to be adjusted several times over a short time period, e.g. when washing windows or painting at varying heights. A further problem with this type of locking mechanism is that when the shaft is used in tools, which are also being twisted in use, such as e.g. a floor mopping tool, the telescopic handle could accidentally be unlocked because of twisting or rotational movements of the mopping tool.
OBJECT AND SUMMARY OF THE INVENTION
It is an object of the invention to solve the before mentioned problems.
This is obtained by a locking mechanism comprising a locking part for fixating said inner member in a specific position relative to the hollow member when said locking mechanism is activated and a deactivation part for deactivating said locking mechanism,
said locking part is fixed relative to said outer member, and said locking mechanism is activated when said locking part is fixating said inner member because of engagement of engagement means of said locking part with the surface of said inner member,
said deactivation part is positioned at the grip part of said telescopic handle and connected to said locking part, whereby said deactivation part deacti- vates the locking mechanism when pressured in a direction substantially parallel to the telescopic handle.
Thereby the action of deactivating and activating the locking mechanism is gentler for the user, because of the pressure direction being parallel to the telescopic handle. The pressure is applied in a direction, in which the user is already pressuring for handling a tool such as a mopping tool or a painting tool. Further, the user can easily perform the length adjustment during use and does not have to stop the usage, when adjusting the length. The length can also be adjusted without a substantial change of the grip on the handle. All of the above results in an adjustment process, which minimizes the physical wear on the user.
In a specific embodiment said deactivation part is a button positioned at the end of the grip part of the outer member.
Thereby the adjustment is even easier; the user can just move the thumb to press the deactivation part to adjust the length of the telescopic handle and release the button when the desired length is obtained.
In an embodiment fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained by a friction between a surface on the engagement means and the surface of said inner member.
Thereby the telescopic handle can be fixed in an unlimited number of lengths. The surface of the engagement means could be a material of high friction, such as rubber. In an embodiment fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained by protrusion of members on the locking part with corresponding holes on the inner mem- ber.
Thereby a very strong fixation can be obtained between the inner member and the engagement means, which compared to a friction engagement, is less sensitive to grease from e.g. soap or paint.
In an embodiment the inner member is hollow having an outer and inner surface, and wherein said locking part is positioned on the inside of said inner member and is adapted for fixating said inner member by interacting with the inner surface of said outer member because of engagement of engagement means of said locking part with the inner surface of the outer inner member.
This has proven to be an efficient way of obtaining a good fixation between the inner member and the outer member of the telescopic handle.
In an embodiment said button is connected to the locking part via a stick, whereby the movement of said stick, and therefore the locking part parallel to the telescopic handle, deactivates or activates said locking mechanism.
This has proven to be an efficient way of obtaining a good fixation between the inner member and the outer member of the telescopic handle.
In an embodiment said deactivation part is connected to the engagement means of the locking part via a spring system whereby said locking mechanism is activated through the release of the spring energy stored in the spring system when the deactivation means is no longer pressured in a direction substantially parallel to the telescopic handle. DESCRIPTION OF PREFERRED EMBODIMENTS
In the following the present invention, and in particular preferred embodiments thereof, will be described in more details in connection with accompanying drawing in which
Figure 1 shows a telescopic handle according to the present invention,
Figure 2 shows a cross section of the telescopic handle shown in Fig. 1 ,
Figure 3 (a) and (b) show a side view of the outer elongated hollow member shown in Fig. 1 , whereby the inner and the outer elongated hollow members are shown in an activated position,
Figure 4 (a) and (b) show a side view of the outer elongated hollow member shown in Fig. 1 , whereby the inner and the outer elongated hollow members are shown in a deactivated position,
Figure 5 shows a perspective view of the grip part, and
Figure 6 shows a perspective view of the locking part also showing the stick rod and a tracker, which is mounted to a rod.
Figure 1 shows a telescopic handle (1 ) according to the present invention, comprising an outer elongated hollow member (2) having a grip part (6) and an open-end (7) and an inner elongated member (3) slideably received in the outer elongated hollow member (2), where at least a part of the inner member (3) extends out of said open-end (7). A locking mechanism provides a length adjustment of the telescopic handle (1 ), which, when activated, fixates said inner member (3) in a specific position relative to the outer hollow mem- ber (2). A deactivation part (4) positioned at the grip part (6) is adapted to deactivate a locking mechanism by pressing the deactivation part (4) with a force in a direction (17) substantially parallel to the telescopic handle (1 ). By doing so, the inner elongated member (3) is movable within the outer elongated hollow member (2), whereby a length adjustment of the telescopic handle (1 ) is possible.
In one embodiment the deactivation is provided by holding the deactivation part (4) in a deactivating position, i.e. by maintaining said force. In another embodiment the deactivation is provided by means of pressing the deactivation part (4) once resulting in that the deactivate position is obtained.
The position of the deactivation part (4) may be situated elsewhere, shown in Fig. 1 , but preferably close to the grip part (6) to make the length adjustment feature more comfortable.
Figure 2 shows a cross section of the telescopic handle shown in Fig. 1 , showing the deactivation part (4), the stopper (8), and a stick (11 ) there between for connection the deactivation part (4) and the stopper (8). By pressing the deactivation part (4) the movement of the stick becomes parallel to the telescopic handle, which results in a deactivation or activation of said locking mechanism. Through such an arrangement the action of deactivating and activating the locking mechanism is gentler for the user, because of the pressure direction being parallel to the telescopic handle. More details of the functionality of the locking mechanism will be discussed in more details in Figs. 3-6.
Figure 3 (a) and (b) show a side view of the outer member (2) shown in Fig. 1 , whereby the inner (3) and the outer (2) elongated hollow members are shown in an activated position. The intermediate part is not shown here. Also shown is a part of the locking mechanism showing the deactivation part (4), the locking part (8), a housing (9) that is mounted to the outer member (2) in a fixed position for housing said stick and a spring (5). The spring (5) is pref- erably mounted to the end of the housing (9) and the deactivation part (4). Figure 3 (a) shows the outer elongated member (2) and the inner elongated member (3) arranged inside thereof. As shown, the locking part (8) engages the inner elongated member (3) through the two slots (10) in the housing (9). The fixation between the outer elongated member (2) and the inner elongated member (3) is obtained through a friction force or a combination of friction and force towards the second housing member (3). Therefore, in this embodiment the material of the locking part (8) at the surface of the locking part (8) is preferably a material of high friction, e.g. rubber, or a material hav- ing a surface with high friction, e.g. one having a rough surface. Also, the larger the surface is of the locking part (8), the larger is the friction force. Therefore, the size of the surface and the material is adjusted to the necessary friction force.
In one embodiment the locking part (8) is obtained by a protrusion of members on the locking part with corresponding holes on the inner member. This can be one or more pins or similar means to engage an aperture or gap in the inner elongated member (3) substantially of the same shape as said aperture or gap.
The shown locking part (8) has a substantially rectangular surface that is facing the inner (3) member and is attached to the housing (9) through an elastic material (10), which allows the mobility that is needed to obtain the different positions shown in Figs. 3 and 4.
Figure 4 (a) and (b) show a side view of the outer member (2) shown in Fig. 1 , whereby the inner (3) and the outer (2) elongated hollow members are shown in a deactivated position where the inner hollow elongated member (3) is placed slideably within the outer hollow elongated member (2). Figure 4 (b) shows the deactivation part (4) being pressed inwards as indicated by the arrow (18). Simultaneously, the spring (5) becomes compressed. The force resulting from the pressure is transferred through the stick towards the locking part (8) resulting in retracting the locking parts (8) from the active position (locking position) to a deactivate position (unlocking position). As long as the deactivation part (4) is pressed inwards as indicated by the arrows (19) and maintained, the deactivate position of the locking parts (8) is maintained, and thereby the length adjustment of the telescopic handle (1 ) is possible. As the deactivation part (4) is released, the deactivated position is transferred to an activated position as shown in Fig. 3 through the release of the spring energy.
In another embodiment a mechanism could be provided to hold the deactivation part (4) locked in this position. In such an embodiment the fixation between the inner and the outer member could be released by pressing the deactivation part (4) again.
Figure 5 shows a perspective view of the grip part (6) and additionally the spring (5), the housing (9) and the stick (11 ) between the deactivation part (4) and the locking parts (8). As shown, the stick (11 ) comprises a rod, which may be made of e.g. metal or a plastic material.
Figure 6 shows a perspective of the locking parts (8) also showing the stick (11 ) and a tracker (14), which is mounted to a rod (11 ). As shown, the locking part (8) comprises two of the same "brake" pads (8) arranged along the inner elongated member (3) and opposite to each other, whereby their distal sur- faces are concave and follow the shape of the inner surface of the inner elongated member (3) and arranged substantially parallel to said shaft. The inner surfaces of two of the like "brake" pads (8) comprise an incline and decline grooves (20) adapted for engaging with the tracker (14). As shown the tracker (14) has a v-shape to engage with the grooves (20). Thereby, by pressing the deactivation part (4), and thereby the tracker (14), forwards in the direction indicated by the arrow (16) the "brake" pads (8) are retracted and forced towards each other. Since the friction force is no longer present, the inner member (3) is slideably within the outer member (2).
In one embodiment the cross section of the outer elongated hollow member (2) and the inner elongated member (3) is axis symmetric to the housing members (2,3). Other cross section symmetries are also possible, e.g. elliptical, rectangular etc. As shown, the inner elongated member (3) is hollow inside. This is mainly to reduce the weight of the telescopic handle (1 ). To reduce the weight further, the material to be used is preferably a material that has low mass density but simultaneously has the necessary strength, such as e.g. a plastic material.
In one embodiment the number of elongated member is more than two, whereby the locking mechanism is adapted in two or more elongated mem- bers.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the ap- pended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of other elements or steps than those listed in a claim.

Claims

1. A telescopic handle wherein said handle comprises an outer elongated hollow member with a grip part, where
said outer member slideably receives an end of an inner elongated member, whereby a part of said inner member extends out of said outer hollow member,
the length of said telescopic handle can be adjusted by sliding said inner member within said outer member thereby changing the length of said part of the inner member extending out of said outer member,
the telescopic handle further comprises a locking mechanism, which, when activated, fixates said inner member in a specific position relative to the outer member,
c h a r a c t e r i z e d b y
said locking mechanism comprising a locking part for fixating said inner member in a specific position relative to the hollow member when said locking mechanism is activated and a deactivation part for deactivating said locking mechanism,
said locking part being fixed relative to said outer member and said locking mechanism being activated when said locking part is fixating said inner member because of engagement of engagement means of said locking part with the surface of said inner member,
said deactivation part being positioned at the grip part of said telescopic han- die and connected to said locking part, whereby said deactivation part deactivates the locking mechanism when pressured in a direction substantially parallel to the telescopic handle.
2. A telescopic handle according to claim 1 , wherein said deactivation part is a button positioned at the end of the grip part of the outer member.
3. A telescopic handle according to claim 1-2, wherein fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained because of a friction between a surface on the engagement means and the surface of said inner member.
4. A telescopic handle according to claim 1-2, wherein fixating said inner member by interacting with the surface of said inner member because of engagement of engagement means of said locking part with the surface of said inner member is obtained because of protrusion of members on the locking part with corresponding holes on the inner member.
5. A telescopic handle according to claim 1-4, wherein the inner member is hollow having an outer and inner surface, and wherein said locking part is positioned on the inside of said inner member and is adapted for fixating said inner member by interacting with the inner surface of said inner member be- cause of engagement of engagement means of said locking part with the inner surface of said inner member.
6. A telescopic handle according to claim 5, wherein said button is connected to the locking part via a stick, whereby the movement of said stick parallel to the telescopic handle deactivates or activates said locking mechanism.
7. A telescopic handle according to claim 1-6, wherein said deactivation part is connected to the engagement means of the locking part via a spring system, whereby said locking mechanism is activated when the deactivation means is no longer pressured in a direction substantially parallel to the telescopic handle.
8. A telescopic handle according to claim 1-7, wherein said handle is used for cleaning tools.
9. A telescopic handle according to claim 1-7, wherein said handle is used for painting tools.
PCT/DK2005/000308 2004-05-10 2005-05-06 A locking mechanism for a telescopic handle WO2005108015A1 (en)

Applications Claiming Priority (2)

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DK200400741A DK200400741A (en) 2004-05-10 2004-05-10 A locking mechanism for a telescopic handle
DKPA200400741 2004-05-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009102260A1 (en) 2008-02-16 2009-08-20 Fast Industriprodukter Hb Telescopic lock
USD794890S1 (en) 2016-01-12 2017-08-15 Cedar Creek Cleaning Products, LLC Handle
US9795268B2 (en) 2015-01-13 2017-10-24 Cedar Creek Cleaning Products, LLC Handle apparatus and cleaning device comprising same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1532723A (en) * 1976-08-20 1978-11-22 Vorwerk Co Interholding Adjustable length handles for tools
WO1986000796A1 (en) * 1984-07-18 1986-02-13 Allesoee Kurt Crutch, walking stick and the like with steplessly variable length
US5752415A (en) * 1996-10-17 1998-05-19 Tsai; Cheng-Hsien Retracting handle bar
US6260238B1 (en) * 1999-10-07 2001-07-17 Macmillan Donald Mark Adjustable length handle for flat finishers
US6409412B1 (en) * 2001-01-10 2002-06-25 Chien-Jen Huang Adjustable locking/unlocking structure for telescopic tube
US20020141812A1 (en) * 2001-03-30 2002-10-03 Edelen William A. Spring assisted telescoping pole assembly
EP1366865A2 (en) * 2002-05-28 2003-12-03 Fiskars Consumer Oy Ab Shaft of a tool or the like

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1532723A (en) * 1976-08-20 1978-11-22 Vorwerk Co Interholding Adjustable length handles for tools
WO1986000796A1 (en) * 1984-07-18 1986-02-13 Allesoee Kurt Crutch, walking stick and the like with steplessly variable length
US5752415A (en) * 1996-10-17 1998-05-19 Tsai; Cheng-Hsien Retracting handle bar
US6260238B1 (en) * 1999-10-07 2001-07-17 Macmillan Donald Mark Adjustable length handle for flat finishers
US6409412B1 (en) * 2001-01-10 2002-06-25 Chien-Jen Huang Adjustable locking/unlocking structure for telescopic tube
US20020141812A1 (en) * 2001-03-30 2002-10-03 Edelen William A. Spring assisted telescoping pole assembly
EP1366865A2 (en) * 2002-05-28 2003-12-03 Fiskars Consumer Oy Ab Shaft of a tool or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009102260A1 (en) 2008-02-16 2009-08-20 Fast Industriprodukter Hb Telescopic lock
US9795268B2 (en) 2015-01-13 2017-10-24 Cedar Creek Cleaning Products, LLC Handle apparatus and cleaning device comprising same
USD794890S1 (en) 2016-01-12 2017-08-15 Cedar Creek Cleaning Products, LLC Handle

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