SE541157C2 - A fitting arrangement for a locking knob - Google Patents

Abstract

The present invention relates to an arrangement (100), for fitting a locking knob (102) to a door leaf (104), comprising; a locking knob (102), a rod (108) having a first end (108a) fixed to the locking knob, the rod (108) being arranged for extending through a lock chamber (106). The rod (108) comprises a groove (110) extending from a second end (108b) of the rod (108), and a series of transverse teeth (112). A first and a second cover plate (114, 116) are arranged to be provided on respective sides of the door leaf (104), wherein the rod (108) being rotatable with respect to the cover plates (114, 116). The rod (108) extends through the first cover plate (114) being adjacent to the locking knob (102). The second cover plate (116) has a spring member (120) for releasable engagement with the teeth (112) for locking the rod (108) in a longitudinal direction thereof. The spring member (120) has a tongue (122) being actuatable from a second end (108b) of the rod (108) such that the tongue (122) is movable in a direction out of the groove (110) thereby releasing the engagement with the teeth (112).

Description

A FITTING ARRANGEMENT FOR A LOCKING KNOB Technical Field The present disclosure relates to an arrangement for fitting a locking knob to a door leaf. The arrangement comprising a locking knob, a rod and first and second cover plates. The present disclosure also relates to a use of the arrangement.

Background Art When mounting handles, locking knobs or similar to doors or windows, it is common practice to fix the handles, locking knobs or similar by means of screws and rods going through the door or window. In the course of mounting the handles or locking knobs, the screws and rods generally has to be adjusted to a certain length by being cut depending on the thickness of the door or the window, resulting in a troublesome mounting.

It has therefore been suggested to use various types of quick locks providing a quicker mounting procedure as well as a simpler mounting procedure where no or only a limited number of tools are needed. Handles capable of being mounted with no tools are readily available at the market. Furthermore, such handles tend to be quicker to mount as compared to traditional handles of the above discussed kind. However, for locking knobs, such as locking knobs used for locking the door to a toilet or a cubicle, no easily mountable locking knobs are available, resulting in that the mounting of a locking knob generally becomes a time consuming and troublesome work. Hence, there is a need for an improved arrangement for fitting a locking knob.

Summary of the invention It is an object of the present disclosure to overcome the above problems, and to provide an improved arrangement for fitting a locking knob to a door leaf.

According to a first aspect, this and other objects are achieved by an arrangement for fitting a locking knob to a door leaf there being disposed interiorly in the door leaf a lock chamber, the arrangement comprising; a locking knob, a rod having a first end fixed to the locking knob, the rod being arranged for extending through the lock chamber when the arrangement is fitted to the door leaf, wherein the rod comprises a groove extending from a second end of the rod along a longitudinal direction of the rod, and a series of transverse teeth arranged adjacent to the groove on at least one side of the groove, a first and a second cover plate arranged to be provided on respective sides of the door leaf, wherein the first and second cover plates each being provided with a projection for counteracting rotational movement with respect to the door leaf, when the arrangement is fitted to the door leaf, wherein the rod being rotatable with respect to the first and second cover plates, wherein the rod is extending through the first cover plate and the first cover plate being adjacent to the locking knob, when the arrangement is fitted to the door leaf, the second cover plate being arranged with a spring member for releasable engagement with the teeth for locking the rod in a longitudinal direction thereof with respect to the second cover plate, wherein the spring member being provided with a tongue extending into the groove when the arrangement being fitted to the door leaf, wherein the tongue being actuatable from the second end of the rod such that the tongue being movable in a direction out of the groove thereby releasing the engagement with the teeth characterized in that the tongue may comprise an inclined surface for moving the tongue in the direction out of the groove by means of an actuator entering the groove in the direction from the second end towards the first end of the rod and pressing against the inclined surface, which is advantageous in that the arrangement may easily be separated and thus released from e.g. a door leaf by pressing an actuator against the inclined surface.

By means of the arrangement it is possible to securely fit a locking knob to a door leaf without using any tools or adjusting any parts needed during the fitting. Further, the arrangement may easily be removed from the door leaf. Moreover, the arrangement allows for that a locking knob may be fitted to door leaves having different thicknesses still without the need of adjusting any parts used during the fitting, owing from the series of transverse teeth provided on the rod. Furthermore, the arrangement is easily removable form a door leaf by actuating the tongue from the second end of the rod such that the tongue is moved in a direction out of the groove thereby releasing the engagement with the teeth.

It should be noted that within the context of this application the term “locking knob” may be any type of element which is suitable to be turned, preferably by hand, for actuating a locking or unlocking motion of a lock chamber disposed in a door leaf. The locking knob is typically fixed to a rod which in turn turns and thus actuates the locking mechanism of the lock chamber in question.

It should be noted that within the context of this application the term “rod” may be any type of elongated element suitable for transferring a rotational motion from a locking knob to a locking chamber, such that a locking or unlocking motion of a lock chamber may be actuated. The rod may be shaped in many different forms without departing from the scope of the present disclosure. The rod may for instance be of different length, different thickness, or different material as long as it is suitable for transferring a rotational motion. The rod may for instance have a square, a triangular, an oval or a hexagonal cross section just to give a few non-limiting examples.

It should be noted that within the context of this application the term “actuator” may refer to any element or object suitable for actuating the tongue from the second end of the rod. This may for example be achieved by having the actuator entering the groove provided in the rod, thereby moving the tongue in a direction out of the groove.

According to the present disclosure, the rod comprises a groove extending from a second end of the rod along a longitudinal direction of the rod. It should be noted that within the context of this application the term “groove extending from a second end of the rod” may mean any type of groove, recess or similar extending along at least a portion of the rod and being at least partially open towards an end of the rod, i.e. an end surface of the rod. In other words, the groove passes an end surface at the second end of the rod.

According to the present disclosure, a series of transverse teeth are arranged adjacent to the groove on at least one side of the groove. The teeth provide for that the rod may be locked in a longitudinal direction thereof with respect to the second cover plate in a plurality positions corresponding to the respective teeth. It should be noted that within the context of this application the term “series of transverse teeth” may be any type of series of transverse elements protruding from the rod, where each element or tooth extend in a transverse direction of the rod.

According to the present disclosure, the arrangement comprises a first and a second cover plate arranged to be provided on respective sides of the door leaf. The first and second cover plates are provided with a projection for counteracting rotational movement with respect to the door leaf. The first and second cover plates may be provided with a plurality of projections.

Preferably, two projections are provided on each cover plate, where the projections are arranged to fit into openings or holes provided in the lock chamber. The first and second cover plates and the respective projections may be integrally formed such that the first cover plate and the projection or projections provided thereon are formed in a single piece and such that the second cover plate and the projection or projections provided thereon are formed in a single piece. As an alternative, the projections and cover plates may be formed as separate parts and joined together so as to form the respective cover plates.

According to the present disclosure, the second cover plate being arranged with a spring member for releasable engagement with the teeth for locking the rod in a longitudinal direction thereof with respect to the second cover plate. It should be noted that within the context of this application the term “spring member” may be any type of member or element exhibiting resilient properties, such that the spring member may engage the teeth while still being capable or being released from the teeth by being bent or flexed to some extent. The spring member is preferably provided with an engaging portion for engaging the teeth. The engaging portion preferably fits at least partially between two consecutive teeth.

According to the present disclosure, the spring member is provided with a tongue which extends into the groove of the rod when the arrangement is fitted to a door leaf. It should be noted that within the context of this application the term “tongue” may be any type of portion extending from the spring member and being suitable for at least partially extending into the groove of the rod.

According to the present disclosure, the tongue is actuatable from the second end of the rod such that the tongue is movable in a direction out of the groove thereby releasing the engagement with the teeth. By this arrangement, the arrangement may be separated by actuating the tongue and thus e.g. released from a door leaf. It should be noted that within the context of this application the term “direction out of the groove” refers to a direction having a major component being perpendicular to a bottom surface of the groove.

According to an embodiment, the spring member may be arranged in a carrier, the carrier being rotatable with respect to the second cover plate, which is advantageous in that the spring member may be securely fixed and supported by the carrier, thereby proving a more rigid arrangement. In other words, the carrier may assist in providing a rigid rotational coupling between the respective first and second cover plates by means of the rod.

According to an embodiment, the first and/or second cover plates may be provided with an indicator for indicating a locking state of the locking chamber, which is advantageous in that a user may easily see the locking state of the locking chamber without having to try if e.g. a door leaf is openable or not.

According to an embodiment, the second cover plate may comprise a centrally arranged member for engagement with the carrier, wherein the centrally arranged member comprises a recess for rotating the rod and an opening for receiving the actuator. By the recess of the centrally arranged member, the locking state of a locking chamber may be actuated form a side of a door leaf not provided with a locking knob, e.g. in case of an emergency. By the opening of the centrally arranged member, an actuator may be inserted in the opening for actuating the tongue, which is advantageous in that the tongue may be actuated without having to remove any parts of the arrangement.

According to an embodiment, the first and/or second cover plates may be provided with a magnet for cooperation with the locking chamber when the arrangement is fitted to the door leaf, which is advantageous in that the fitting of the arrangement to a door leaf may be made more rigid and thus capable of handling larger forces.

There is further provided a use of the above described arrangement, not forming part of the invention.

It is noted that the disclosure relates to all possible combinations of features recited in the claims.

Brief Description of the Drawings This and other aspects of the present disclosure will now be described in more detail, with reference to the appended drawings showing embodiments of the invention, in which, Fig. 1 illustrates a perspective exploded view of an arrangement according to an embodiment; Fig. 2 illustrates a perspective cut away view the arrangement of Fig. 1 when mounted to a door leaf; Fig. 3A-3B schematically illustrates how the arrangement of Figs. 1-2 may be released.

As illustrated in the figures, the sizes of parts and portions for example may exaggerated for illustrative purposes and, thus, are provided to illustrate the general structures of embodiments of the present invention. Like reference numerals refer to like elements throughout.

Detailed description The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the invention to the skilled person.

An embodiment will now be described with reference to Figs. 1 and 2. Not all details or parts illustrated in Figs. 1 and 2 are relevant with reference to this embodiment. Fig. 1 illustrates an exploded view of an arrangement 100 for fitting a locking knob 102 to a door leaf 104 and Fig. 2 illustrates the arrangement 100 fitted to a door leaf 104. There is disposed interiorly in the door leaf 104 a lock chamber 106. The arrangement 100 has a locking knob 102, and a rod 108 having a first end 108a fixed to the locking knob 102. The rod 108 is arranged for extending through the lock chamber 106 when the arrangement 100 is fitted to the door leaf 104. The rod 108 has a groove 110 extending from a second end 108b of the rod 108 along a longitudinal direction of the rod 108, and a series of transverse teeth 112 arranged adjacent to the groove 110 on at least one side of the groove 110. A first and a second cover plate 114, 116 are arranged to be provided on respective sides of the door leaf 104. The first and second cover plates 114, 116 each is being provided with a projection 118 for counteracting rotational movement with respect to the door leaf 104, when the arrangement 100 is fitted to the door leaf 104. The rod 108 is rotatable with respect to the first and second cover plates 114, 116, wherein the rod 108 is extending through the first cover plate 114 and the first cover plate 114 is adjacent to the locking knob 102, when the arrangement 100 is fitted to the door leaf 104. The second cover plate 116 is arranged with a spring member 120 for releasable engagement with the teeth 112 for locking the rod 108 in a longitudinal direction thereof with respect to the second cover plate 116. The spring member 120 is provided with a tongue 122 extending into the groove 110 when the arrangement 100 being fitted to the door leaf 104. The tongue 122 is actuatable from the second end 108b of the rod 108 such that the tongue 122 is movable in a direction out of the groove 110 thereby releasing the engagement with the teeth 112.

Still with reference to Figs. 1 and 2, further embodiments will now be discussed. In the exploded view the first and second cover plates 114, 116 are illustrated as being formed of a plurality of separated elements joined to form the first and second cover plates 114, 116. The projections 118 are illustrated as being formed separate to the visible portions of the first and second cover plates 114, 116. Two projections 118 are provided on each cover plate 114, 116. The projections 118 may be provided or manufactured separate or integral with the respective cover plates according to embodiments. If provided separate, the projections 118, or any support structure for the projections 118, may be fixed to the visible parts of the cover plates 114, 116 in a suitable fashion, such as, for example, by gluing or by means of adhesive film. By visible parts are intended the parts or washers being visible when the arrangement 100 of Figs. 1 and 2 is fitted to a door leaf 104. As illustrated in figure 1, a resilient ring 136 may be provided between each cover plate 114, 116 and the door leaf 104. The resilient ring may be made of for example silicone, rubber or any suitable elastomer. Such a resilient ring provides a suitable seal between the cover plate 114, 116 and the door leaf 104, which for example provides for a better fit of the cover plate 114, 116 and the door leaf 104. Thus, for example any rattling between the cover plate 114, 116 and the door leaf 104 may be avoided. Further, any rotational forces between the cover plate 114, 116 and the door leaf 104 may be counteracted.

As illustrated in Figs. 1 and 2, the spring member 120 may be arranged in a carrier 126, the carrier 126 being rotatable with respect to the second cover plate 116. Thereby, efficiently realizing that the rod 108 is being rotatable with respect to the second cover plate 116. Further, the first and/or second cover plates 114, 116 may be provided with an indicator 128 for indicating a locking state of the locking chamber. Thereby it may efficiently be communicated to a person viewing the indicator if a door leaf 104 having the arrangement 100 fitted is locked or un-locked.

The first and/or second cover plates 114, 116 may be provided with a magnet (not illustrated) for cooperation with the locking chamber 106 when the arrangement 100 is fitted to the door leaf 104. Thereby, an efficient fit between the cover plates 114, 116 and the locking chamber 106 may be provided.

Discussions with reference to Figs. 3A and 3B, will now provide further explanations of the arrangement 100, including the function of the spring member 120. Figure 3A illustrates the second cover plate 116 and the spring member 120 in a state wherein the locking knob 102 and the cover plates 114, 116 are releasably attached to the door leaf 104. The spring member 120 is engaged with the teeth 112 whereby the rod 108 is locked in a longitudinal direction thereof with respect to the second cover plate 116 by means of an engaging portion 120a of the spring member 120. Fig. 3A thereby illustrates details of the arrangement 100 when fitted to a door leaf 104. It is realized that both the locking knob 102, and the second cover plate 116 hereby are firmly fastened to the door leaf 104 for normal use, for reasons including that the rod 108 is fixed to the locking knob 102 and the spring member 120 being releasably engaged with the teeth 112. A user of the locking knob 102 may, thus, not accidently remove the locking knob 102 and arrangement 100 from the door leaf 104.

Removing the locking knob 102 from the door leaf 104, such as, for example, if a maintenance to the door leaf 104 or the arrangement 100 is desired or any other reason for the arrangement 100 to be removed from the door leaf 104 will now be discussed. The tongue 122 is actuatable from the second end 108b of the rod 108 such that the tongue 122 being movable in a direction out of the groove 110 thereby releasing the engagement with the teeth 112. For this purpose, the tongue 122 may have an inclined surface 122a for moving the tongue 122 in a direction out of the groove 110 by means of an actuator 124 entering the groove 110 in a direction from the second end 108b towards the first end 108a of the rod 108 and pressing against the inclined surface 122a. The actuator 124 has a suitable shape for entering the groove 110 and for actuating the tongue 122. The actuator 124 may, for example, comprise a rod-shaped section. The actuator or the rodshaped section of the actuator may have a cross-section in the shape of a circle or a rectangle, for example having a diameter or a side in the range of 1-5 mm. The inclined surface 122a may comprise, for example, a rounded surface, or a surface tilted or slanted. It is realized that alternatively, the actuator 124 may, for example, have an inclined surface, or having a pointed or tapered actuating end. The second cover plate 116 may comprise a centrally arranged member 130 for engagement with the carrier 126, wherein the centrally arranged member 130 comprises a recess 132 for rotating the rod 108 and an opening 134 for receiving the actuator 124. The recess 132 provides for the possibility to unlock the locking chamber 106 from the side of the door leaf 104 opposite that of the locking knob 102, by means of, for example, a screw driver. The opening 134 provides for that an actuator 124 for actuating the tongue 122 may be inserted through the opening 134.

The person skilled in the art realizes that the present invention by no means is limited to the preferred embodiments described above. On the contrary, many modifications and variations are possible within the scope of the appended claims.

Additionally, variations to the disclosed embodiments can be understood and effected by the skilled person in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage.

Claims (5)

A FITTING ARRANGEMENT FOR A LOCKING KNOB CLAIMS

1. Arrangement (100) for fitting a locking knob (102) to a door leaf (104) there being disposed interiorly in the door leaf (104) a lock chamber (106), the arrangement (100) comprising; a locking knob (102), a rod (108) having a first end (108a) fixed to the locking knob, the rod (108) being arranged for extending through the lock chamber (106) when the arrangement (100) is fitted to the door leaf (104), wherein the rod (108) comprises a groove (110) extending from a second end (108b) of the rod (108) along a longitudinal direction of the rod (108), and a series of transverse teeth (112) arranged adjacent to the groove (110) on at least one side of the groove (110), a first and a second cover plate (114, 116) arranged to be provided on respective sides of the door leaf (104), wherein the first and second cover plates (114, 116) each being provided with a projection (118) for counteracting rotational movement with respect to the door leaf (104), when the arrangement (100) is fitted to the door leaf (104), wherein the rod (108) being rotatable with respect to the first and second cover plates (114, 116), wherein the rod (108) is extending through the first cover plate (114) and the first cover plate (114) being adjacent to the locking knob (102), when the arrangement (100) is fitted to the door leaf (104), the second cover plate (116) being arranged with a spring member (120) for releasable engagement with the teeth (112) for locking the rod (108) in a longitudinal direction thereof with respect to the second cover plate (116), wherein the spring member (120) being provided with a tongue (122) extending into the groove (110) when the arrangement (100) being fitted to the door leaf (104), wherein the tongue (122) being actuatable from the second end (108b) of the rod (108) such that the tongue (122) being movable in a direction out of the groove (110) thereby releasing the engagement with the teeth (112), characterized in that the tongue (122) comprises an inclined surface (122a) for moving the tongue (122) in the direction out of the groove (110) by means of an actuator (124) entering the groove (110) in the direction from the second end (108b) towards the first end (108a) of the rod (108) and pressing against the inclined surface (122a).

2. Arrangement according to claim 1, wherein the spring member (120) is arranged in a carrier (126), the carrier (126) being rotatable with respect to the second cover plate (116).

3. Arrangement according to claim 1 or 2, wherein the first and/or second cover plates (114, 116) being provided with an indicator (128) for indicating a locking state of the locking chamber.

4. Arrangement according to claim 2, wherein the second cover plate (116) comprises a centrally arranged member (130) for engagement with the carrier (126), wherein the centrally arranged member (130) comprises a recess (132) for rotating the rod (108) and an opening (134) for receiving the actuator (124).

5. Arrangement according to anyone of the preceding claims, wherein the first and/or second cover plates (114, 116) being provided with a magnet for cooperation with the locking chamber (106) when the arrangement (100) is fitted to the door leaf (104).