CA3043094A1 - Pivot joint with defined pressure point - Google Patents
Pivot joint with defined pressure point Download PDFInfo
- Publication number
- CA3043094A1 CA3043094A1 CA3043094A CA3043094A CA3043094A1 CA 3043094 A1 CA3043094 A1 CA 3043094A1 CA 3043094 A CA3043094 A CA 3043094A CA 3043094 A CA3043094 A CA 3043094A CA 3043094 A1 CA3043094 A1 CA 3043094A1
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- CA
- Canada
- Prior art keywords
- cam
- securing
- locking cam
- pivot
- sprocket
- 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.)
- Abandoned
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 210000002105 tongue Anatomy 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
- A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
- A47C7/541—Supports for the arms of adjustable type
Landscapes
- Pivots And Pivotal Connections (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Pivot joint (1) for adjusting a functional part of a piece of furniture with a mounting lever (2) and a pivot lever (5), wherein the mounting lever (2) and the pivot lever (5) are connected pivotably in an adjustment direction (E) about a joint pivot axis (6), from a starting position to an end position, against each other, wherein the pivot lever (5) is locked by a blocking positive engagement of a locking mechanism (19) against pivoting in the return direction (R), wherein the locking mechanism (19) comprises a locking cam (16) and a sprocket (12) rotatable in a direction relative to the locking cam (16) and wherein the locking cam (16) is provided to be adjustable from a detent position engaging with the sprocket (12) into a disengaged position disengaged from the sprocket (12) and back. In order to reduce the design complexity and costs as well as to make handling more convenient, it is provided that a securing cam (27) is provided to be adjustable against the restoring force of a securing spring means (28) and that in the securing position the securing cam (27) prevents accidental adjustment of the locking cam (16) from the detent position into the disengaged position and in the release position releases an adjustment of the locking cam (16) from the detent position into the disengaged position, and that the securing cam (27) can be adjusted by adjusting the pivot lever (5).
Description
PIVOT JOINT WITH DEFINED PRESSURE POINT
The invention relates to a pivot joint for adjusting a functional part, in particular a head part, a foot part or an armrest, of a piece of furniture, in particular seating furniture and/or upholstered furniture, with a mounting lever for mounting the pivot joint on the furniture and a pivot lever for carrying and adjusting the functional part, wherein the mounting lever and the pivot lever are connected pivotably in an adjustment direction about a joint pivot axis, from a starting position to an end position, against each other, wherein the pivot lever is locked against pivoting in the return direction opposite to the adjustment direction in a plurality of locking positions provided between the starting position and the end position by a blocking positive engagement of a locking mechanism, wherein the locking mechanism comprises a locking cam and a sprocket rotatable in a direction relative to the locking cam, and wherein the locking cam is provided to be adjustable by a pivoting of the pivot lever from a detent position engaging with the sprocket into a disengaged position disengaged from the sprocket and back.
Pivot joints for adjusting a functional part of a piece of furniture are known in different configurations. In most cases, the pivot joints are used to adjust a head part, a foot part, or an armrest of a seating furniture, which is typically upholstered furniture.
The pivot joints have a mounting lever, with which the pivot joints are fixed to the respective piece of furniture. In addition, a pivot lever is provided which carries the respective functional part and pivots the respective functional part about the mounting lever. For this purpose, the mounting lever and the pivot lever are designed to be pivotable about a joint pivot axis in an adjustment direction against each other from a starting position to an end position.
When adjusting the pivot lever relative to the mounting lever in the adjustment direction starting from the starting position, different locking positions are successively passed. The user of the furniture adjusts the pivot joint or pivots the pivot lever as far as required in the
The invention relates to a pivot joint for adjusting a functional part, in particular a head part, a foot part or an armrest, of a piece of furniture, in particular seating furniture and/or upholstered furniture, with a mounting lever for mounting the pivot joint on the furniture and a pivot lever for carrying and adjusting the functional part, wherein the mounting lever and the pivot lever are connected pivotably in an adjustment direction about a joint pivot axis, from a starting position to an end position, against each other, wherein the pivot lever is locked against pivoting in the return direction opposite to the adjustment direction in a plurality of locking positions provided between the starting position and the end position by a blocking positive engagement of a locking mechanism, wherein the locking mechanism comprises a locking cam and a sprocket rotatable in a direction relative to the locking cam, and wherein the locking cam is provided to be adjustable by a pivoting of the pivot lever from a detent position engaging with the sprocket into a disengaged position disengaged from the sprocket and back.
Pivot joints for adjusting a functional part of a piece of furniture are known in different configurations. In most cases, the pivot joints are used to adjust a head part, a foot part, or an armrest of a seating furniture, which is typically upholstered furniture.
The pivot joints have a mounting lever, with which the pivot joints are fixed to the respective piece of furniture. In addition, a pivot lever is provided which carries the respective functional part and pivots the respective functional part about the mounting lever. For this purpose, the mounting lever and the pivot lever are designed to be pivotable about a joint pivot axis in an adjustment direction against each other from a starting position to an end position.
When adjusting the pivot lever relative to the mounting lever in the adjustment direction starting from the starting position, different locking positions are successively passed. The user of the furniture adjusts the pivot joint or pivots the pivot lever as far as required in the
- 2 -adjustment direction, until he has set the corresponding functional part in a comfortable position. So that the functional part at least approximately retains this position and does not accidentally retract back to the starting position, the pivot lever can only be retracted to the next locking position. In the detent position, a locking mechanism engages positively and in a blocking manner and thus locks the pivot lever in relation to a pivot in the return direction opposite to the adjustment direction relative to the mounting lever.
The locking mechanism is formed by a locking cam and a sprocket, which is rotatable relative to the locking cam. To lock the locking mechanism, the locking cam can engage in the toothing of the sprocket.
However, in order to be able to reset the pivot lever back into the starting position, the pivot lever needs first to be adjusted in the adjustment direction up to an end position, whereby the locking cam is brought into a disengaged position out of engagement with the sprocket. As long as the locking cam is in the disengaged position, the pivot lever can be adjusted in the return direction back to an opposite end position. As a result, the locking cam is then brought back into engagement with the sprocket in the starting position, so that the pivot joint can be adjusted individually in the adjustment direction again to provide the user a comfortable seating position.
In known pivot joints, it repeatedly occurs that the user wants to adjust the pivot lever in the adjustment direction almost into the associated end position, so as to adjust the functional part as far as possible from the starting position into the adjustment direction. In this case, the user can accidentally adjust the pivot lever too far, if he is not careful, and so adjusts the locking cam from the detent position to the disengaged position, making locking of the pivot joint impossible. The user must first adjust the pivot joint back towards the return direction so as to return the locking cam from the disengaged position into the detent position, engaging in the sprocket. Now the pivot joint can be pivoted again about the desired angle in the adjustment direction. To overcome this problem, pivot joints are often provided with an increased adjustment range, so that the functional part takes up
The locking mechanism is formed by a locking cam and a sprocket, which is rotatable relative to the locking cam. To lock the locking mechanism, the locking cam can engage in the toothing of the sprocket.
However, in order to be able to reset the pivot lever back into the starting position, the pivot lever needs first to be adjusted in the adjustment direction up to an end position, whereby the locking cam is brought into a disengaged position out of engagement with the sprocket. As long as the locking cam is in the disengaged position, the pivot lever can be adjusted in the return direction back to an opposite end position. As a result, the locking cam is then brought back into engagement with the sprocket in the starting position, so that the pivot joint can be adjusted individually in the adjustment direction again to provide the user a comfortable seating position.
In known pivot joints, it repeatedly occurs that the user wants to adjust the pivot lever in the adjustment direction almost into the associated end position, so as to adjust the functional part as far as possible from the starting position into the adjustment direction. In this case, the user can accidentally adjust the pivot lever too far, if he is not careful, and so adjusts the locking cam from the detent position to the disengaged position, making locking of the pivot joint impossible. The user must first adjust the pivot joint back towards the return direction so as to return the locking cam from the disengaged position into the detent position, engaging in the sprocket. Now the pivot joint can be pivoted again about the desired angle in the adjustment direction. To overcome this problem, pivot joints are often provided with an increased adjustment range, so that the functional part takes up
- 3 -positions that are no longer perceived as comfortable under normal circumstances, well before the pivot lever reaches the end position in the adjustment direction.
The user then has no incentive to fully exploit the adjustment range and therefore runs no risk of accidentally adjusting the pivot lever into the end position in the adjustment direction.
However, the user must then always adjust the pivot lever quite far in order to be able to move the pivot lever back in the return direction. Corresponding pivot joints are therefore structurally complex, costly and less comfortable to handle.
Therefore, the present invention has the object of designing and further developing the pivot joint mentioned initially and previously described in more detail, so that on the one hand the design complexity and costs are reduced, and on the other hand the handling can be made more comfortable.
This object is achieved in a pivot joint according to the preamble of Claim 1, in that a securing cam is provided, which can be adjusted against the restoring force of a securing spring means from a securing position into a release position, and can be adjusted in the direction of the restoring force back from the release position into the securing position, and in that in the securing position the securing cam hinders accidental adjustment of the locking cam from the detent position into the disengaged position and in the release position releases an adjustment of the locking cam from the detent position into the disengaged position, and in that the securing cam can be adjusted by adjusting the pivot lever from the securing position into the release position.
By using a securing cam spring-loaded via the securing spring means, a defined pressure point for the adjustment of the pivot lever between the end of the adjustment range and the end position can be provided. If the pivot lever is adjusted with a small force in the adjustment direction towards the end of the adjustment range, as is typically the case when adjusting the pivot lever and/or the functional part carried by the pivot lever, the adjustment of the locking cam from the detent position to the disengaged position is
The user then has no incentive to fully exploit the adjustment range and therefore runs no risk of accidentally adjusting the pivot lever into the end position in the adjustment direction.
However, the user must then always adjust the pivot lever quite far in order to be able to move the pivot lever back in the return direction. Corresponding pivot joints are therefore structurally complex, costly and less comfortable to handle.
Therefore, the present invention has the object of designing and further developing the pivot joint mentioned initially and previously described in more detail, so that on the one hand the design complexity and costs are reduced, and on the other hand the handling can be made more comfortable.
This object is achieved in a pivot joint according to the preamble of Claim 1, in that a securing cam is provided, which can be adjusted against the restoring force of a securing spring means from a securing position into a release position, and can be adjusted in the direction of the restoring force back from the release position into the securing position, and in that in the securing position the securing cam hinders accidental adjustment of the locking cam from the detent position into the disengaged position and in the release position releases an adjustment of the locking cam from the detent position into the disengaged position, and in that the securing cam can be adjusted by adjusting the pivot lever from the securing position into the release position.
By using a securing cam spring-loaded via the securing spring means, a defined pressure point for the adjustment of the pivot lever between the end of the adjustment range and the end position can be provided. If the pivot lever is adjusted with a small force in the adjustment direction towards the end of the adjustment range, as is typically the case when adjusting the pivot lever and/or the functional part carried by the pivot lever, the adjustment of the locking cam from the detent position to the disengaged position is
- 4 -blocked. The positive locking between the locking cam and the securing cam then leads to a clear feedback to the user that the end of the adjustment range has been reached. While the pivot lever can be adjusted into the adjustment direction with minimal force in the region of the adjustment range, this force is not sufficient to adjust the adjustment lever further than to the end of the adjustment range. It comes into positive locking between the locking cam and the securing cam and thus blocks the further adjustment of the pivot lever in the adjustment direction with only a small amount of force.
If, however, the force applied to the pivot lever in the adjustment direction is markedly increased, then the securing cam is displaced against the restoring force of the securing spring means from the securing position into the release position. While in the securing position the securing cam hindered or blocked the adjustment, in particular accidental adjustment, of the locking cam from the detent position into the disengaged position by pivoting of the pivot lever into the adjustment direction, in the release position the securing cam releases an adjustment of the locking cam from the detent position into the disengaged position.
The adjustment of the securing cam from the securing position to the release position is carried out by adjusting the pivot lever in the adjustment direction and thus just as the setting of the functional part in the adjustment direction. Thus, the securing cam provides a noticeable pressure point for the user when adjusting the pivot lever. The user can therefore, if he notices the pressure point, decide whether he wants to leave the pivot lever and thus the functional part in the appropriate position in which a retraction via the locking mechanism of the pivot joint is prevented. However, he may also decide to adjust the pivot lever against the pressure point to deliberately adjust the locking cam from the detent position to the disengaged position to lock the functional part in another position, which in turn is freely adjustable. In this case, the securing cam is retracted out of the release position back into the securing position due to the restoring force of the securing spring means, which acts on the securing cam, when the locking cam is adjusted from the
If, however, the force applied to the pivot lever in the adjustment direction is markedly increased, then the securing cam is displaced against the restoring force of the securing spring means from the securing position into the release position. While in the securing position the securing cam hindered or blocked the adjustment, in particular accidental adjustment, of the locking cam from the detent position into the disengaged position by pivoting of the pivot lever into the adjustment direction, in the release position the securing cam releases an adjustment of the locking cam from the detent position into the disengaged position.
The adjustment of the securing cam from the securing position to the release position is carried out by adjusting the pivot lever in the adjustment direction and thus just as the setting of the functional part in the adjustment direction. Thus, the securing cam provides a noticeable pressure point for the user when adjusting the pivot lever. The user can therefore, if he notices the pressure point, decide whether he wants to leave the pivot lever and thus the functional part in the appropriate position in which a retraction via the locking mechanism of the pivot joint is prevented. However, he may also decide to adjust the pivot lever against the pressure point to deliberately adjust the locking cam from the detent position to the disengaged position to lock the functional part in another position, which in turn is freely adjustable. In this case, the securing cam is retracted out of the release position back into the securing position due to the restoring force of the securing spring means, which acts on the securing cam, when the locking cam is adjusted from the
- 5 -disengaged position back into the detent position. Then, the securing cam is again ready to generate a pressure point when the pivot lever is adjusted to the end of the adjustment range.
In a first particularly preferred embodiment of the pivot joint, the locking cam has a release sliding surface which can be brought into contact with the securing cam, in order to adjust the securing cam out of the securing position into the release position by the interaction of the securing cam and the release sliding surface of the locking cam in a structurally simple and at the same time reliable manner. For this purpose, it is useful if the release sliding surface is inclined from the securing position to the release position with respect to the adjustment direction of the securing cam. Then, for example, the locking cam can be at least substantially adjusted or pivoted in a direction perpendicular to the joint pivot axis and still adjust the securing cam in a direction at least substantially parallel to the joint pivot axis. In a comfortable and structurally simple manner, the release surface makes it in principle possible that the locking cam can adjust the securing cam by contact with the release sliding surface from the securing position in the direction of the release position, in particular into the release position. It is understood that a sufficient force must be transmitted via the corresponding contact of locking cam and securing cam with one another, which causes the securing cam to be adjusted in the direction of the release position and thus releases the adjustment path from the detent position into the disengaged position.
Alternatively or additionally, the securing cam may have a release sliding surface that can be brought into contact with the locking cam. Due to the interaction of the locking cam and the release sliding surface of the securing cam, the securing cam can be adjusted in a structurally simple and at the same time reliable manner from the securing position to the release position. It is particularly useful when the release sliding surface is inclined from the securing position to the release position with respect to the adjustment direction of the securing cam, so that the locking cam can adjust the securing cam by contact on its release sliding surface from the securing position into the direction of the release position, in
In a first particularly preferred embodiment of the pivot joint, the locking cam has a release sliding surface which can be brought into contact with the securing cam, in order to adjust the securing cam out of the securing position into the release position by the interaction of the securing cam and the release sliding surface of the locking cam in a structurally simple and at the same time reliable manner. For this purpose, it is useful if the release sliding surface is inclined from the securing position to the release position with respect to the adjustment direction of the securing cam. Then, for example, the locking cam can be at least substantially adjusted or pivoted in a direction perpendicular to the joint pivot axis and still adjust the securing cam in a direction at least substantially parallel to the joint pivot axis. In a comfortable and structurally simple manner, the release surface makes it in principle possible that the locking cam can adjust the securing cam by contact with the release sliding surface from the securing position in the direction of the release position, in particular into the release position. It is understood that a sufficient force must be transmitted via the corresponding contact of locking cam and securing cam with one another, which causes the securing cam to be adjusted in the direction of the release position and thus releases the adjustment path from the detent position into the disengaged position.
Alternatively or additionally, the securing cam may have a release sliding surface that can be brought into contact with the locking cam. Due to the interaction of the locking cam and the release sliding surface of the securing cam, the securing cam can be adjusted in a structurally simple and at the same time reliable manner from the securing position to the release position. It is particularly useful when the release sliding surface is inclined from the securing position to the release position with respect to the adjustment direction of the securing cam, so that the locking cam can adjust the securing cam by contact on its release sliding surface from the securing position into the direction of the release position, in
- 6 -particular into the release position. Then, for example, the locking cam can be at least substantially adjusted or pivoted in a direction perpendicular to the joint pivot axis and thereby nevertheless adjust the securing cam in a direction at least substantially parallel to the joint pivot axis. In a comfortable and structurally simple manner, the release surface makes it in principle possible that the locking cam can adjust the securing cam by contact with the release sliding surface from the securing position towards the release position, in particular into the release position.
It is particularly preferred in this context if the release sliding surfaces of the securing cam and the locking cam are designed to be brought into contact with each other for sliding contact with each other for adjusting the securing cam from the securing position to the release position by adjusting the pivot lever. The cooperating release sliding surfaces can then be matched to each other so that the adjustment of the securing cam into the release position can be achieved very reliably and easily. In particular, it is possible to be able to precisely adjust the forces required for adjusting of the securing cam.
Both from a functional and structural point of view, it is particularly preferred if the securing cam is adjustable in a direction parallel to the joint pivot axis between the securing position and the release position and, if necessary, also back. Thus, the pressure point for adjusting the securing cam by adjusting the pivot lever can be easily and precisely adjusted.
In addition, the securing cam and the associated securing spring means can be easily and reliably arranged.
In order to construct the pivot joint simply, compactly and reliably, it makes sense if the sprocket has an external toothing pointing away from the joint pivot axis.
Then, the locking cam and the securing cam can be arranged outside the sprocket and also act together outside the sprocket. This can be achieved easily and with minimal compromise, because outside of the sprocket sufficient space for the locking cam and the securing cam is available.
It is particularly preferred in this context if the release sliding surfaces of the securing cam and the locking cam are designed to be brought into contact with each other for sliding contact with each other for adjusting the securing cam from the securing position to the release position by adjusting the pivot lever. The cooperating release sliding surfaces can then be matched to each other so that the adjustment of the securing cam into the release position can be achieved very reliably and easily. In particular, it is possible to be able to precisely adjust the forces required for adjusting of the securing cam.
Both from a functional and structural point of view, it is particularly preferred if the securing cam is adjustable in a direction parallel to the joint pivot axis between the securing position and the release position and, if necessary, also back. Thus, the pressure point for adjusting the securing cam by adjusting the pivot lever can be easily and precisely adjusted.
In addition, the securing cam and the associated securing spring means can be easily and reliably arranged.
In order to construct the pivot joint simply, compactly and reliably, it makes sense if the sprocket has an external toothing pointing away from the joint pivot axis.
Then, the locking cam and the securing cam can be arranged outside the sprocket and also act together outside the sprocket. This can be achieved easily and with minimal compromise, because outside of the sprocket sufficient space for the locking cam and the securing cam is available.
- 7 -In order to provide a high as possible flexibility and a very wide adjustment range, the sprocket may be provided circumferentially, in particular infinitely, around the joint axis.
Thus, the functional part can be set over a wide range and in a manner comfortable for the user. Alternatively or additionally, the locking cam may have a toothing corresponding to the sprocket, which may contribute to a secure and reliable locking of the pivot lever in the return direction in a certain position within the adjustment range. If more teeth of the locking mechanism intermesh with each other, higher forces can in principle be absorbed in the return direction.
It is particularly preferable to provide generally at least one control disc, which is rotatable and releasable relative to the locking cam at least in sections together with the sprocket.
The adjustment range and the starting position of the pivot joint can then be adjusted via the control disc and, if necessary, varied by replacing the control disc. To adjust the pivot joint, a release stop of the control disc can be brought into contact with the locking cam when pivoting the pivot lever into the adjustment direction in a certain position of the pivot joint. A further adjustment of the pivot lever then causes the locking cam to be adjusted by the control disc into a disengaged position, disengaged from the sprocket. The pivot lever can be pivoted with the locking cam in the disengaged position into the return direction back to the starting position, which was prevented by the locking engagement of the locking mechanism with the locking cam in the detent position. So that the locking cam can be adjusted from the disengaged position back into the detent position, and thus the pivot joint can be adjusted back to the starting position, the control disc has a locking stop, which is brought into contact with the locking cam when the pivot lever is pivoted in the return direction in a certain position of the pivot lever. If the pivot lever in this position is further adjusted in the return direction, the locking cam is reset into a detent position in engagement with the sprocket by the control disc in the starting position.
By using a control disc for adjusting the locking cam from the detent position to the disengaged position and back by pivoting the pivot lever into the adjustment direction or
Thus, the functional part can be set over a wide range and in a manner comfortable for the user. Alternatively or additionally, the locking cam may have a toothing corresponding to the sprocket, which may contribute to a secure and reliable locking of the pivot lever in the return direction in a certain position within the adjustment range. If more teeth of the locking mechanism intermesh with each other, higher forces can in principle be absorbed in the return direction.
It is particularly preferable to provide generally at least one control disc, which is rotatable and releasable relative to the locking cam at least in sections together with the sprocket.
The adjustment range and the starting position of the pivot joint can then be adjusted via the control disc and, if necessary, varied by replacing the control disc. To adjust the pivot joint, a release stop of the control disc can be brought into contact with the locking cam when pivoting the pivot lever into the adjustment direction in a certain position of the pivot joint. A further adjustment of the pivot lever then causes the locking cam to be adjusted by the control disc into a disengaged position, disengaged from the sprocket. The pivot lever can be pivoted with the locking cam in the disengaged position into the return direction back to the starting position, which was prevented by the locking engagement of the locking mechanism with the locking cam in the detent position. So that the locking cam can be adjusted from the disengaged position back into the detent position, and thus the pivot joint can be adjusted back to the starting position, the control disc has a locking stop, which is brought into contact with the locking cam when the pivot lever is pivoted in the return direction in a certain position of the pivot lever. If the pivot lever in this position is further adjusted in the return direction, the locking cam is reset into a detent position in engagement with the sprocket by the control disc in the starting position.
By using a control disc for adjusting the locking cam from the detent position to the disengaged position and back by pivoting the pivot lever into the adjustment direction or
- 8 -the return direction, the pivot joint can be adapted very quickly and easily to different requirement profiles. The pivot joint can also remain unchanged in principle.
All that is required is to choose a suitable control disc or to exchange the present control disc for another control disc. This is therefore achievable easily and quickly, because the control disc is releasably provided on the pivot joint.
The integrated control disc is also provided to be rotatable at least partially together with the sprocket relative to the locking cam. Thereby, the control disc can be adjusted by pivoting the pivot lever, at least in a certain adjustment range of the pivot lever together with the sprocket and thus relative to the locking cam. It is thus achieved that the release stop of the control disc is thus brought into engagement with the locking cam when pivoting the pivot lever into the adjustment direction, so that the locking cam is adjusted by the rotation of the control disc together with the sprocket into a disengaged position disengaged from the sprocket. While the locking cam is arranged in the disengaged position, the pivot lever can be pivoted in the return direction back to the starting position, wherein the locking cam remains out of engagement with the sprocket, so as not to affect the adjustment of the pivot lever.
In addition, the adjustment of the control disc at least in sections together with the sprocket enables a locking stop of the control disc to engage with the locking cam by an adjustment of the pivot lever into the return direction after reaching the starting position, in such a way that the locking cam is retracted from the disengaged position in the starting position into a detent position in engagement with the sprocket by rotation of the control disc together with the sprocket. Now, the pivot joint can be adjusted back into the adjustment direction, wherein a certain position of the pivot joint is then positively held against a retraction in the return direction, because the locking mechanism, in particular the locking cam and the sprocket, intermesh positively in the corresponding position of the pivot joint. However, an adjustment of the pivot lever further in the adjustment direction remains possible.
All that is required is to choose a suitable control disc or to exchange the present control disc for another control disc. This is therefore achievable easily and quickly, because the control disc is releasably provided on the pivot joint.
The integrated control disc is also provided to be rotatable at least partially together with the sprocket relative to the locking cam. Thereby, the control disc can be adjusted by pivoting the pivot lever, at least in a certain adjustment range of the pivot lever together with the sprocket and thus relative to the locking cam. It is thus achieved that the release stop of the control disc is thus brought into engagement with the locking cam when pivoting the pivot lever into the adjustment direction, so that the locking cam is adjusted by the rotation of the control disc together with the sprocket into a disengaged position disengaged from the sprocket. While the locking cam is arranged in the disengaged position, the pivot lever can be pivoted in the return direction back to the starting position, wherein the locking cam remains out of engagement with the sprocket, so as not to affect the adjustment of the pivot lever.
In addition, the adjustment of the control disc at least in sections together with the sprocket enables a locking stop of the control disc to engage with the locking cam by an adjustment of the pivot lever into the return direction after reaching the starting position, in such a way that the locking cam is retracted from the disengaged position in the starting position into a detent position in engagement with the sprocket by rotation of the control disc together with the sprocket. Now, the pivot joint can be adjusted back into the adjustment direction, wherein a certain position of the pivot joint is then positively held against a retraction in the return direction, because the locking mechanism, in particular the locking cam and the sprocket, intermesh positively in the corresponding position of the pivot joint. However, an adjustment of the pivot lever further in the adjustment direction remains possible.
- 9 -The control disc is thus used in particular for adjusting the locking cam from the detent position to the disengaged position and back. Thus, it is in principle sufficient if the control disc rotates together with the sprocket in the angle ranges of the pivot lever in which the adjustment of the locking cam from the detent position to the disengaged position and back is provided. However, this does not mean that the control disc cannot be rotatable together with the sprocket over the entire adjustment path or adjustment angle of the pivot lever.
Depending on how the control disc is configured and arranged in the pivot joint, the adjustment angle or the adjustment range of the pivot joint can be defined in a simple manner as well as the orientation of the pivot lever to the mounting lever in the starting position. In light of the fact that a further adaptation of the pivot joint can be dispensed with, and that the control disc can be very easily, quickly, inexpensively and individually manufactured, many different pivot joints for very many different applications can be kept ready without increased manufacturing costs and/or storage costs.
If the locking cam at least partially projects laterally relative to the sprocket, the release stop and the locking stop of the control disc can be provided abutting on sections of the locking cam projecting laterally with respect to the sprocket. In this way, a reliable and structurally simple adjustment of the locking cam by the control disc is ensured. A lateral projection of the locking cam with respect to the sprocket is preferably to be understood to mean a projection parallel to the joint pivot axis, in particular in the direction of the control disc. Thus, the at least one control disc can function in conjunction with the at least one locking cam easily and reliably.
The control disc can be at least partially positively held non-rotatably relative to the sprocket. Due to the positive locking, a reliable interaction of sprocket and control disc is ensured. In this case, a rotation of the control disc independent of the sprocket and/or vice versa is possible partially and as needed. However, the sprocket and the control disc cannot be rotated completely independently of each other. During and for the adjusting of the
Depending on how the control disc is configured and arranged in the pivot joint, the adjustment angle or the adjustment range of the pivot joint can be defined in a simple manner as well as the orientation of the pivot lever to the mounting lever in the starting position. In light of the fact that a further adaptation of the pivot joint can be dispensed with, and that the control disc can be very easily, quickly, inexpensively and individually manufactured, many different pivot joints for very many different applications can be kept ready without increased manufacturing costs and/or storage costs.
If the locking cam at least partially projects laterally relative to the sprocket, the release stop and the locking stop of the control disc can be provided abutting on sections of the locking cam projecting laterally with respect to the sprocket. In this way, a reliable and structurally simple adjustment of the locking cam by the control disc is ensured. A lateral projection of the locking cam with respect to the sprocket is preferably to be understood to mean a projection parallel to the joint pivot axis, in particular in the direction of the control disc. Thus, the at least one control disc can function in conjunction with the at least one locking cam easily and reliably.
The control disc can be at least partially positively held non-rotatably relative to the sprocket. Due to the positive locking, a reliable interaction of sprocket and control disc is ensured. In this case, a rotation of the control disc independent of the sprocket and/or vice versa is possible partially and as needed. However, the sprocket and the control disc cannot be rotated completely independently of each other. During and for the adjusting of the
- 10 -locking cam from the detent position to the disengaged position and back, the sprocket and the control disc do not rotate independently, but jointly or together.
Nevertheless, it is particularly preferred in terms of reliability and a low-noise adjustment of the pivot joint when the control disc is continuously fixed non-rotatably relative to the sprocket. This means that, with the exception of a pre-existing play, the control disc and the sprocket always rotate jointly and together when the pivot lever is pivoted about the mounting lever.
A simple installation of the pivot joint and a simple replacement of the control disc at the same time with a reliable integration of the control disc in the pivot joint, is made possible if a sprocket element supporting the sprocket and the control disc are inserted onto and/or into each other. In this case, it is not fundamentally necessary to differentiate between a insertion onto one another and a insertion into one another, in particular if the insertion of the control disc onto the sprocket element is accompanied by an insertion of the sprocket element into the control disc or vice versa. It is further preferred if the sprocket element and the control disc comprise a plurality of corresponding groove/tongue connections in the circumferential direction, in order to connect the control disc in different rotational positions with the sprocket element. Thus, one and the same control disc can be mounted in at least two different positions, in particular angle positions, relative to the sprocket. In this case, the adjustment angle or the adjustment range of the resulting pivot joint in particular remains the same. However through the orientation of the control disc to the sprocket the location of the starting position or the position of the pivot lever can be varied relative to the mounting lever in the starting position.
The mounting lever and the pivot lever can in a structurally easy manner be connected to one another via a mounting axis, which can be used as needed for a simple and reliable mounting of the control disc and the sprocket, by the control disc and the sprocket being mounted onto the mounting axis. The adjustability of the pivot joint can thereby be ensured, for example, by the fact that the control disc and the sprocket are held rotatably about and on the mounting axis.
Nevertheless, it is particularly preferred in terms of reliability and a low-noise adjustment of the pivot joint when the control disc is continuously fixed non-rotatably relative to the sprocket. This means that, with the exception of a pre-existing play, the control disc and the sprocket always rotate jointly and together when the pivot lever is pivoted about the mounting lever.
A simple installation of the pivot joint and a simple replacement of the control disc at the same time with a reliable integration of the control disc in the pivot joint, is made possible if a sprocket element supporting the sprocket and the control disc are inserted onto and/or into each other. In this case, it is not fundamentally necessary to differentiate between a insertion onto one another and a insertion into one another, in particular if the insertion of the control disc onto the sprocket element is accompanied by an insertion of the sprocket element into the control disc or vice versa. It is further preferred if the sprocket element and the control disc comprise a plurality of corresponding groove/tongue connections in the circumferential direction, in order to connect the control disc in different rotational positions with the sprocket element. Thus, one and the same control disc can be mounted in at least two different positions, in particular angle positions, relative to the sprocket. In this case, the adjustment angle or the adjustment range of the resulting pivot joint in particular remains the same. However through the orientation of the control disc to the sprocket the location of the starting position or the position of the pivot lever can be varied relative to the mounting lever in the starting position.
The mounting lever and the pivot lever can in a structurally easy manner be connected to one another via a mounting axis, which can be used as needed for a simple and reliable mounting of the control disc and the sprocket, by the control disc and the sprocket being mounted onto the mounting axis. The adjustability of the pivot joint can thereby be ensured, for example, by the fact that the control disc and the sprocket are held rotatably about and on the mounting axis.
- 11 -In order to be able to receive the sprocket, the control disc and the locking cam reliably and well-protected against external influences, the mounting lever and/or the pivot lever can form a receptacle for receiving the sprocket, the control disc and the locking cam. In this case, in particular, the control disc can be accurately and reliably positioned to the locking cam and/or the sprocket, if the receptacle is closed on both sides by cover elements. Thus, a more or less closed receptacle for receiving sprocket, control disc and locking cam can be provided simply and expediently.
In order to securely fix the locking cam in the disengaged position while the pivot lever is adjusted in the return direction, the locking cam can be held in the disengaged position by a retaining element. For the sake of reliability and simplicity it is expedient, when the retaining element clamps the locking cam or holds it by clamping. This is ensured particularly easily and reliably, when the retaining element is designed as at least one spring element.
In order to hold the locking cam securely in the disengaged position, it can further be provided that the locking cam has a retaining stop and the spring element is provided so that the restoring force of the spring element brings the retaining stop of the locking cam in the disengaged position into contact with a retaining means of the mounting lever and/or pivot lever. In other words, the locking cam can be pressed against a retaining means with a retaining stop as a result of the restoring force of the at least one spring means. This corresponding position thus retains the locking cam reliably, without thereby excessively hindering the adjustment of the locking cam from the disengaged position back into the detent position.
Alternatively or additionally, the locking cam may have an adjusting end stop, which comes into contact with the mounting lever and/or the pivot lever by adjusting the pivot lever in an end position in the adjustment direction. In this way, a very stable end position for adjusting in the adjustment direction is defined for the pivot lever. From a constructional
In order to securely fix the locking cam in the disengaged position while the pivot lever is adjusted in the return direction, the locking cam can be held in the disengaged position by a retaining element. For the sake of reliability and simplicity it is expedient, when the retaining element clamps the locking cam or holds it by clamping. This is ensured particularly easily and reliably, when the retaining element is designed as at least one spring element.
In order to hold the locking cam securely in the disengaged position, it can further be provided that the locking cam has a retaining stop and the spring element is provided so that the restoring force of the spring element brings the retaining stop of the locking cam in the disengaged position into contact with a retaining means of the mounting lever and/or pivot lever. In other words, the locking cam can be pressed against a retaining means with a retaining stop as a result of the restoring force of the at least one spring means. This corresponding position thus retains the locking cam reliably, without thereby excessively hindering the adjustment of the locking cam from the disengaged position back into the detent position.
Alternatively or additionally, the locking cam may have an adjusting end stop, which comes into contact with the mounting lever and/or the pivot lever by adjusting the pivot lever in an end position in the adjustment direction. In this way, a very stable end position for adjusting in the adjustment direction is defined for the pivot lever. From a constructional
- 12 -point of view, it is further advantageous if the locking cam is in contact with the release stop of the control disc in the end position of the pivot lever in the adjustment direction. Then the control disc can be supported with the release stop on the locking cam and the locking cam can be simultaneously supported with the adjusting end stop on the mounting lever and/or on the pivot lever. In other words, the release stop of the control disc pushes the locking cam with the adjusting end stop against the mounting lever and/or pivot lever.
Analogously, the locking cam may also have a returning end stop for contact with the mounting lever and/or with the pivot lever, when the pivot lever is in an end position in the return direction. In this way, a very stable end position for the pivot lever is defined for the adjustment in the return direction. From a constructional point of view, it is further advantageous if the locking cam is in contact with the locking stop of the control disc in the end position of the pivot lever in the return direction. Then the control disc can be supported with the locking stop on the locking cam and the locking cam can be simultaneously supported with the returning end stop on the mounting lever and/or on the pivot lever. In other words, the locking stop of the control disc pushes the locking cam with the returning end stop against the mounting lever and/or pivot lever.
For transmission and led off of high forces from the pivot lever, the locking cam can be clamped in the end position of the pivot lever in the adjustment direction, that is between the control disc on the one hand and the mounting lever and/or pivot lever on the other hand. Thus, for example, high forces can be led off from the pivot lever onto the mounting lever via the control disc and the locking cam when the pivot lever is pushed into the end position in the adjustment direction. Alternatively or additionally, for the same reason the locking cam can be clamped in the end position of the pivot lever in the return direction between the control disc on the one hand and the mounting lever and/or pivot lever on the other hand. Thus, for example, high forces can be led off from the pivot lever onto the mounting lever via the control disc and the locking cam when the pivot lever is pushed into the end position in the return direction.
Analogously, the locking cam may also have a returning end stop for contact with the mounting lever and/or with the pivot lever, when the pivot lever is in an end position in the return direction. In this way, a very stable end position for the pivot lever is defined for the adjustment in the return direction. From a constructional point of view, it is further advantageous if the locking cam is in contact with the locking stop of the control disc in the end position of the pivot lever in the return direction. Then the control disc can be supported with the locking stop on the locking cam and the locking cam can be simultaneously supported with the returning end stop on the mounting lever and/or on the pivot lever. In other words, the locking stop of the control disc pushes the locking cam with the returning end stop against the mounting lever and/or pivot lever.
For transmission and led off of high forces from the pivot lever, the locking cam can be clamped in the end position of the pivot lever in the adjustment direction, that is between the control disc on the one hand and the mounting lever and/or pivot lever on the other hand. Thus, for example, high forces can be led off from the pivot lever onto the mounting lever via the control disc and the locking cam when the pivot lever is pushed into the end position in the adjustment direction. Alternatively or additionally, for the same reason the locking cam can be clamped in the end position of the pivot lever in the return direction between the control disc on the one hand and the mounting lever and/or pivot lever on the other hand. Thus, for example, high forces can be led off from the pivot lever onto the mounting lever via the control disc and the locking cam when the pivot lever is pushed into the end position in the return direction.
- 13 -Irrespective of this, the control disc can define an angle range between the release stop and the locking stop, which essentially determines the adjustment angle or the adjustment range of the pivot lever. In particular, a section of the angle range is used to provide the release angle and/or release path for adjusting the locking cam from the detent position to the disengaged position. This release angle or release path can also be referred to as disengaging angle or disengaging path, since the corresponding disengaging angle or disengaging path serves to disengage the locking cam from the sprocket.
Another part of the angle range can be used to provide the release angle and/or release path for adjusting the locking cam from the disengaged position to the detent position. Consequently, this release angle or release path can also be referred to as engaging angle or engaging path, since the corresponding engaging angle or engaging path serves for engaging the locking cam in the sprocket. In other words, the two release paths or release angles occupy two sections, in particular the opposite end sections of the corresponding angle range between the release stop and the locking stop. The angle range in between is then available as an adjustment angle for adjusting the pivot joint Thus, by the arrangement of the release stop relative to the locking stop at defined release paths or release angles the respectively desired adjustment angle can be adjusted very precisely. By contrast, the location of the starting position or the arrangement of the pivot lever in the starting position can be determined by the arrangement of the locking stop. Alternatively or additionally, the location of the starting position can also be changed, depending in which of several possible, different positions the control disc is connected to the sprocket, if the control disc can be arranged in not only one position to the sprocket.
The invention will subsequently be explained in more detail with reference to a drawing depicting a purely exemplary embodiment. In the drawing:
Figs. 1A-C show a pivot joint according to the invention in a perspective view, in an exploded view and in a perspective view from the opposite side,
Another part of the angle range can be used to provide the release angle and/or release path for adjusting the locking cam from the disengaged position to the detent position. Consequently, this release angle or release path can also be referred to as engaging angle or engaging path, since the corresponding engaging angle or engaging path serves for engaging the locking cam in the sprocket. In other words, the two release paths or release angles occupy two sections, in particular the opposite end sections of the corresponding angle range between the release stop and the locking stop. The angle range in between is then available as an adjustment angle for adjusting the pivot joint Thus, by the arrangement of the release stop relative to the locking stop at defined release paths or release angles the respectively desired adjustment angle can be adjusted very precisely. By contrast, the location of the starting position or the arrangement of the pivot lever in the starting position can be determined by the arrangement of the locking stop. Alternatively or additionally, the location of the starting position can also be changed, depending in which of several possible, different positions the control disc is connected to the sprocket, if the control disc can be arranged in not only one position to the sprocket.
The invention will subsequently be explained in more detail with reference to a drawing depicting a purely exemplary embodiment. In the drawing:
Figs. 1A-C show a pivot joint according to the invention in a perspective view, in an exploded view and in a perspective view from the opposite side,
- 14 -Figs. 2A-C show a detail of the pivot joint from Fig. 1 in a plan view, in a sectional view along the section line of Fig. 2A with the securing cam in the securing position and in a sectional view along the section line IIB-IIB of Fig. 2A
with the securing cam in the release position, Fig. 3 shows the pivot joint from Fig. 1 in the starting position at one end of the adjustment range in a sectional view, Fig. 4 shows the pivot joint from Fig. 1 with the pivot lever at the opposite end of the adjustment range in a sectional view, Fig. 5 shows the pivot joint from Fig. 1 with the pivot lever at an end position in the adjustment direction in a sectional view, Fig. 6 shows the pivot joint from Fig. 1 with the pivot lever at an end position in the return direction in a sectional view, Fig. 7 shows the control disc of the pivot joint from Fig. 1 in a plan view.
In Fig. 1A, a pivot joint 1 is shown in a perspective view and in Fig. 1B in an exploded view.
To connect the pivot joint 1 with the piece of furniture, in particular a seating furniture, more preferably with the backrest of a seating furniture, a mounting lever 2 is provided.
The mounting lever 2 is non-rotatably connected to a sprocket element 3, wherein the sprocket element 3 is rotatably mounted onto a mounting axis 4. The mounting axis 4 is connected on the one hand to the mounting lever 2 and on the other hand to a pivot lever 5 for mounting a functional part, in particular a head part. The connection is provided such that the pivot lever 5 is pivotable for adjusting the functional part relative to the mounting lever 2 and thus relative to the sprocket element 3. In this case, in the illustrated and in this respect preferred pivot joint 1, the pivot lever 5 is held rotatably relative to the sprocket
with the securing cam in the release position, Fig. 3 shows the pivot joint from Fig. 1 in the starting position at one end of the adjustment range in a sectional view, Fig. 4 shows the pivot joint from Fig. 1 with the pivot lever at the opposite end of the adjustment range in a sectional view, Fig. 5 shows the pivot joint from Fig. 1 with the pivot lever at an end position in the adjustment direction in a sectional view, Fig. 6 shows the pivot joint from Fig. 1 with the pivot lever at an end position in the return direction in a sectional view, Fig. 7 shows the control disc of the pivot joint from Fig. 1 in a plan view.
In Fig. 1A, a pivot joint 1 is shown in a perspective view and in Fig. 1B in an exploded view.
To connect the pivot joint 1 with the piece of furniture, in particular a seating furniture, more preferably with the backrest of a seating furniture, a mounting lever 2 is provided.
The mounting lever 2 is non-rotatably connected to a sprocket element 3, wherein the sprocket element 3 is rotatably mounted onto a mounting axis 4. The mounting axis 4 is connected on the one hand to the mounting lever 2 and on the other hand to a pivot lever 5 for mounting a functional part, in particular a head part. The connection is provided such that the pivot lever 5 is pivotable for adjusting the functional part relative to the mounting lever 2 and thus relative to the sprocket element 3. In this case, in the illustrated and in this respect preferred pivot joint 1, the pivot lever 5 is held rotatably relative to the sprocket
- 15 -element 3 and about the joint pivot axis 6 of the pivot joint 1.
A control disc 7 is attached onto the sprocket element 3. For this purpose, a plurality of respectively corresponding grooves 8, 9 and tongues 10, 11 are provided circumferentially around the sprocket element 3, and in the illustrated and in this respect preferred pivot joint 1 also circumferentially around the control disc 7, in order to provide a groove/tongue connection between the control disc 7 and the sprocket element 3 in the circumferential direction. Due to the plurality of grooves 8, 9 and tongues 10, 11, the control disc 7 can be pushed in different orientations on the sprocket element 3 and fixed there.
The alignment of the control disc 7 to the sprocket element 3 can also be subsequently changed.
For this purpose, the control disc 7 has to be removed from the sprocket element 3 and then rotated by the desired angle. Subsequently, the control disc 7 can be pushed back onto the sprocket element 3 in the changed orientation. By pushing the control disc 7 onto the sprocket element 3, the control disc 7 comes close to the sprocket 12 provided circumferentially around the sprocket element 3.
The sprocket 12 of the sprocket element 3 and the control disc 7 are received in a receptacle 13 formed by the pivot lever 5, which is closed on both sides by cover elements 14, 15. In the receptacle 13, there is also a locking cam 16 having a toothing 17 which can engage with the external toothing 18 of the sprocket 12. The locking cam 16 and the sprocket 12 thereby form a locking mechanism 19 to lock the adjustment of the pivot joint 1 in at least one position and in at least one direction. For this purpose, the locking cam 16 is positively clamped between the sprocket 12 and the receptacle 13, in particular in the tapered section of the receptacle 13.
Furthermore, a retaining element 20 in the form of a spring element is arranged in the receptacle 13, which can exert a restoring force on the locking cam 16 in the direction of the sprocket 12, for instance to facilitate on the one hand an engagement of the locking cam 16 in the sprocket 12 and on the other hand a sliding of the locking cam 16 off of the sprocket
A control disc 7 is attached onto the sprocket element 3. For this purpose, a plurality of respectively corresponding grooves 8, 9 and tongues 10, 11 are provided circumferentially around the sprocket element 3, and in the illustrated and in this respect preferred pivot joint 1 also circumferentially around the control disc 7, in order to provide a groove/tongue connection between the control disc 7 and the sprocket element 3 in the circumferential direction. Due to the plurality of grooves 8, 9 and tongues 10, 11, the control disc 7 can be pushed in different orientations on the sprocket element 3 and fixed there.
The alignment of the control disc 7 to the sprocket element 3 can also be subsequently changed.
For this purpose, the control disc 7 has to be removed from the sprocket element 3 and then rotated by the desired angle. Subsequently, the control disc 7 can be pushed back onto the sprocket element 3 in the changed orientation. By pushing the control disc 7 onto the sprocket element 3, the control disc 7 comes close to the sprocket 12 provided circumferentially around the sprocket element 3.
The sprocket 12 of the sprocket element 3 and the control disc 7 are received in a receptacle 13 formed by the pivot lever 5, which is closed on both sides by cover elements 14, 15. In the receptacle 13, there is also a locking cam 16 having a toothing 17 which can engage with the external toothing 18 of the sprocket 12. The locking cam 16 and the sprocket 12 thereby form a locking mechanism 19 to lock the adjustment of the pivot joint 1 in at least one position and in at least one direction. For this purpose, the locking cam 16 is positively clamped between the sprocket 12 and the receptacle 13, in particular in the tapered section of the receptacle 13.
Furthermore, a retaining element 20 in the form of a spring element is arranged in the receptacle 13, which can exert a restoring force on the locking cam 16 in the direction of the sprocket 12, for instance to facilitate on the one hand an engagement of the locking cam 16 in the sprocket 12 and on the other hand a sliding of the locking cam 16 off of the sprocket
- 16 -12 for adjusting the pivot joint 1. In addition, the locking cam 16 can come at a corresponding position of the pivot lever 5 in contact with the release stop 21 or in contact with the locking stop 22. For this purpose, the locking cam 16 protrudes parallel to the joint pivot axis 6 and about opposite the sprocket 12 in the direction of the mounting lever 2.
This protruding region of the locking cam 16 can then come into contact with the control disc 7, in particular with the release stop 21 and the locking stop 22 of the control disc 7.
The locking cam 16 also has an adjusting end stop 23, with which the locking cam 16 abuts against the receptacle 13 of the pivot lever 5 under certain circumstances, to block further adjustment of the pivot lever 5 in the adjustment direction. In order to keep the locking cam 16 separated from the sprocket 12, so that a retraction of the pivot lever 5 can take place, the locking cam 16 has a retaining stop 24 with which the locking cam 16 can be frictionally pressed against a retaining means 25 of the receptacle 13. In order to block further adjustment of the pivot lever 5 in the return direction, the locking cam 16 is provided with a returning end stop 26 which can come into contact with the receptacle 13 of the pivot lever under certain circumstances. The pivot lever 5, in particular the receptacle 13 or the cover element 14, also has a securing cam 27, wherein the securing cam 27 extends with its free end in the direction of the locking cam 16.
In Fig. 1C, the pivot joint 1 is shown from the opposite direction compared with Figs. 1A-B.
On this side of the pivot joint 1, the securing cam 27 is held on the pivot lever 5 via a securing spring means 28. In principle, the pivot joint could also be constructed such that the securing cam 27 is fixed to the mounting lever 2 via a securing spring means 28. The arrangement of the securing cam 27 on the pivot lever 5 is therefore not mandatory. The securing spring means 28 is further fixed on the pivot lever, such that the securing cam 27 can be adjusted back and forth at least substantially parallel to the joint pivot axis 6 of the pivot joint 1 between a securing position and a release position, wherein the adjustment of the securing cam 27 is effected by an interaction of the securing cam 27 with the locking cam 16 on the one hand and the securing spring means 28 on the other hand, which also act
This protruding region of the locking cam 16 can then come into contact with the control disc 7, in particular with the release stop 21 and the locking stop 22 of the control disc 7.
The locking cam 16 also has an adjusting end stop 23, with which the locking cam 16 abuts against the receptacle 13 of the pivot lever 5 under certain circumstances, to block further adjustment of the pivot lever 5 in the adjustment direction. In order to keep the locking cam 16 separated from the sprocket 12, so that a retraction of the pivot lever 5 can take place, the locking cam 16 has a retaining stop 24 with which the locking cam 16 can be frictionally pressed against a retaining means 25 of the receptacle 13. In order to block further adjustment of the pivot lever 5 in the return direction, the locking cam 16 is provided with a returning end stop 26 which can come into contact with the receptacle 13 of the pivot lever under certain circumstances. The pivot lever 5, in particular the receptacle 13 or the cover element 14, also has a securing cam 27, wherein the securing cam 27 extends with its free end in the direction of the locking cam 16.
In Fig. 1C, the pivot joint 1 is shown from the opposite direction compared with Figs. 1A-B.
On this side of the pivot joint 1, the securing cam 27 is held on the pivot lever 5 via a securing spring means 28. In principle, the pivot joint could also be constructed such that the securing cam 27 is fixed to the mounting lever 2 via a securing spring means 28. The arrangement of the securing cam 27 on the pivot lever 5 is therefore not mandatory. The securing spring means 28 is further fixed on the pivot lever, such that the securing cam 27 can be adjusted back and forth at least substantially parallel to the joint pivot axis 6 of the pivot joint 1 between a securing position and a release position, wherein the adjustment of the securing cam 27 is effected by an interaction of the securing cam 27 with the locking cam 16 on the one hand and the securing spring means 28 on the other hand, which also act
- 17 -in opposite directions on the securing cam 27. In a securing position, the securing cam 27 hinders or blocks accidental adjustment of the locking cam 16 from the detent position to the disengaged position. In the release position, however, the securing cam 27 releases an adjustment of the locking cam 16 from the detent position to the disengaged position. In this case, the securing cam 27 is adjusted by adjusting the pivot lever 5 against the restoring force of the securing spring means 28 from the securing position to the release position.
The adjustment of the securing cam 27 back into the securing position is effected by the restoring force of the securing spring means 28 when the corresponding movement is released by the locking cam 16.
Fig. 2A shows a detail of the pivot joint 1 in the region of the pivot lever 5 with the securing cam 27 and the securing spring means 28. In Fig. 2B, this detail is shown along the line IIB-IIB of Fig. 2A in the securing position. The mounting lever 2, which is placed on the sprocket element 3, is shown on the right. The sprocket 12 of the sprocket element 3 is received in the receptacle 13 enclosed by the pivot lever 5 and the cover elements 14, 15.
In the receptacle 13, the sprocket 12 is in engagement with the locking cam 16, which has a recess 29 at the bottom left, in which the free end of the securing cam 27 engages.
The securing cam is fixed on the pivot lever 5 via the securing spring means 28. The securing spring means 28 allows adjustment of the securing cam 27 from the securing position shown in Fig. 2B against the restoring force, into the release position shown in Fig.
2C, parallel to the joint pivot axis 6, since the securing cam 27 is seated in an opening 32 of the cover element 14. This opening 32 serves as a guide for the securing cam 27 for adjusting the securing cam 27 from the securing position to the release position and back. The securing spring means 28 is also fixed to the pivot lever 5, via a bolt 33. The release sliding surfaces 30, 31 of the locking cam 16 and the securing cam 27 serve to adjust the securing cam 27 from the securing position to the release position. The release sliding surfaces 30, 31 slide against one another when the control disc 7 displaces the locking cam 16 out of the detent position into the disengaged position as a result of a pivoting of the pivot lever 5 in the adjustment direction. The securing cam thereby passes to the left, into the release position shown in
The adjustment of the securing cam 27 back into the securing position is effected by the restoring force of the securing spring means 28 when the corresponding movement is released by the locking cam 16.
Fig. 2A shows a detail of the pivot joint 1 in the region of the pivot lever 5 with the securing cam 27 and the securing spring means 28. In Fig. 2B, this detail is shown along the line IIB-IIB of Fig. 2A in the securing position. The mounting lever 2, which is placed on the sprocket element 3, is shown on the right. The sprocket 12 of the sprocket element 3 is received in the receptacle 13 enclosed by the pivot lever 5 and the cover elements 14, 15.
In the receptacle 13, the sprocket 12 is in engagement with the locking cam 16, which has a recess 29 at the bottom left, in which the free end of the securing cam 27 engages.
The securing cam is fixed on the pivot lever 5 via the securing spring means 28. The securing spring means 28 allows adjustment of the securing cam 27 from the securing position shown in Fig. 2B against the restoring force, into the release position shown in Fig.
2C, parallel to the joint pivot axis 6, since the securing cam 27 is seated in an opening 32 of the cover element 14. This opening 32 serves as a guide for the securing cam 27 for adjusting the securing cam 27 from the securing position to the release position and back. The securing spring means 28 is also fixed to the pivot lever 5, via a bolt 33. The release sliding surfaces 30, 31 of the locking cam 16 and the securing cam 27 serve to adjust the securing cam 27 from the securing position to the release position. The release sliding surfaces 30, 31 slide against one another when the control disc 7 displaces the locking cam 16 out of the detent position into the disengaged position as a result of a pivoting of the pivot lever 5 in the adjustment direction. The securing cam thereby passes to the left, into the release position shown in
- 18 -Fig. 2C and thus with its free end out of the recess 29. As a result, the securing cam 27 allows the adjustment of the locking cam 16 into the disengaged position shown in Fig. 2C.
In Fig. 3, the pivot joint 1 is shown in the starting position and in a sectional view. The starting position forms an end of the adjustment range for the pivot lever 5.
From the starting position, the pivot lever 5 can be pivoted in the adjustment direction E relative to the mounting lever 2, wherein the locking cam 16 in principle remains in engagement with the sprocket 12, but on adjustment of the pivot lever 5 slides on the sprocket 12. However, the restoring force of the retaining element 20 in the form of a spring element presses the toothing 17 of the locking cam 16 repeatedly into the external toothing 18 of the sprocket 12. This leads to a positive locking, which blocks the pivot lever 5 from pivoting back in the return direction R opposite the adjustment direction E, since the locking cam 16 then wedges between the sprocket 12 and the receptacle 13. If the user has pivoted the pivot lever 5 in the adjustment direction E so far that he can take a comfortable sitting position, the blocking of the pivot joint 1 by the locking mechanism 19 prevents an accidental retraction of the pivot joint 1, if this is for instance loaded into the return direction R by contact of the user's head with a head part carried on the pivot lever 5.
However, a further adjustment of the pivot lever 5 in the adjustment direction E remains possible, wherein the free end of the securing cam 27 facing the locking cam 16, in the illustrated and in this respect preferred pivot joint 1, remains arranged in a recess 29 of the locking cam 16 adjacent to a release sliding surface 30 of the locking cam 16.
This applies at least until the pivot joint 1 or the pivot lever 5, as shown in Fig. 4, has reached the end of the adjustment range or the adjustment angle. Thereby, not only has the sprocket 12 rotated in the adjustment direction E, but so has the control disc 7. While the control disc 7 has been in the starting position with the locking stop 22 in contact with the locking cam 16, now the control disc 7 is in contact with the release stop 21 on another side of the locking cam 16. If the pivot lever 5 is further pivoted in the adjustment direction E, the adjustment of the pivot joint 1 no longer takes place. Rather, the control disc 7 presses
In Fig. 3, the pivot joint 1 is shown in the starting position and in a sectional view. The starting position forms an end of the adjustment range for the pivot lever 5.
From the starting position, the pivot lever 5 can be pivoted in the adjustment direction E relative to the mounting lever 2, wherein the locking cam 16 in principle remains in engagement with the sprocket 12, but on adjustment of the pivot lever 5 slides on the sprocket 12. However, the restoring force of the retaining element 20 in the form of a spring element presses the toothing 17 of the locking cam 16 repeatedly into the external toothing 18 of the sprocket 12. This leads to a positive locking, which blocks the pivot lever 5 from pivoting back in the return direction R opposite the adjustment direction E, since the locking cam 16 then wedges between the sprocket 12 and the receptacle 13. If the user has pivoted the pivot lever 5 in the adjustment direction E so far that he can take a comfortable sitting position, the blocking of the pivot joint 1 by the locking mechanism 19 prevents an accidental retraction of the pivot joint 1, if this is for instance loaded into the return direction R by contact of the user's head with a head part carried on the pivot lever 5.
However, a further adjustment of the pivot lever 5 in the adjustment direction E remains possible, wherein the free end of the securing cam 27 facing the locking cam 16, in the illustrated and in this respect preferred pivot joint 1, remains arranged in a recess 29 of the locking cam 16 adjacent to a release sliding surface 30 of the locking cam 16.
This applies at least until the pivot joint 1 or the pivot lever 5, as shown in Fig. 4, has reached the end of the adjustment range or the adjustment angle. Thereby, not only has the sprocket 12 rotated in the adjustment direction E, but so has the control disc 7. While the control disc 7 has been in the starting position with the locking stop 22 in contact with the locking cam 16, now the control disc 7 is in contact with the release stop 21 on another side of the locking cam 16. If the pivot lever 5 is further pivoted in the adjustment direction E, the adjustment of the pivot joint 1 no longer takes place. Rather, the control disc 7 presses
- 19 -the locking cam 16 from the detent position towards a disengaged position in which the locking cam 16 is disengaged from the sprocket 12. First, however, the locking cam 16 ,driven by the control disc 7, reaches with a release sliding surface 30 against the free end of the securing cam 27, in particular against a release sliding surface 31 of the free end of the securing cam 27. The release sliding surfaces 30, 31 are inclined relative to the adjustment direction of the securing cam 27 from the securing position to the release position, so that the locking cam 16 adjusts the securing cam 27 into the release position via the contact on the securing cam and the sliding of the release sliding surfaces 30, 31 from the securing position against the restoring force of the securing spring means 28 and at least substantially parallel to the joint pivot axis 6 away from the mounting lever 2.
Since a higher force is required for the adjustment of the securing cam 27 from the securing position to the release position than for the adjustment of the pivot lever 5 in the adjustment range in the adjustment direction, a distinct pressure point can be determined by the user when the locking cam 16 is in contact with the securing cam 27 and adjusts this in the direction of the release position. Before this is achieved, the user, who has detected the pressure point and thus received the feedback that he has reached the end of the adjustment range of the pivot joint 1, can release the pivot lever 5. In this case, as a result of the orientation of the release sliding surface 30, the pivot lever 5 is retracted so that the last setting position is taken along the adjustment range of the pivot joint 1.
Thus, it can ultimately be avoided that the user accidentally adjusts the locking cam 16 from the detent position to the disengaged position. If the pivot lever 5 is pivoted still further in the adjustment direction E, the pivot lever 5 reaches the end position in the adjustment direction E, as shown in Fig. 5. In this case, the release stop 21 of the control disc 7 bears against the locking cam 16 and presses the locking cam 16 with its adjusting end stop 23 against the receptacle 13 of the pivot lever 5. A further adjustment of the pivot lever 5 in the adjustment direction E is thus blocked. The adjustment of the locking cam 16 from the detent position, in which the locking cam 16 is held by the retaining element
Since a higher force is required for the adjustment of the securing cam 27 from the securing position to the release position than for the adjustment of the pivot lever 5 in the adjustment range in the adjustment direction, a distinct pressure point can be determined by the user when the locking cam 16 is in contact with the securing cam 27 and adjusts this in the direction of the release position. Before this is achieved, the user, who has detected the pressure point and thus received the feedback that he has reached the end of the adjustment range of the pivot joint 1, can release the pivot lever 5. In this case, as a result of the orientation of the release sliding surface 30, the pivot lever 5 is retracted so that the last setting position is taken along the adjustment range of the pivot joint 1.
Thus, it can ultimately be avoided that the user accidentally adjusts the locking cam 16 from the detent position to the disengaged position. If the pivot lever 5 is pivoted still further in the adjustment direction E, the pivot lever 5 reaches the end position in the adjustment direction E, as shown in Fig. 5. In this case, the release stop 21 of the control disc 7 bears against the locking cam 16 and presses the locking cam 16 with its adjusting end stop 23 against the receptacle 13 of the pivot lever 5. A further adjustment of the pivot lever 5 in the adjustment direction E is thus blocked. The adjustment of the locking cam 16 from the detent position, in which the locking cam 16 is held by the retaining element
20 in contact with the sprocket 12, into the disengaged position in which the locking cam 16 is spaced apart from the sprocket 12, takes place against the restoring force of the retaining element 20, which presses the locking cam 16 with a retaining stop 24 against a retaining means 25 which has a finger-like form in the present case. This results in a frictional engagement between the locking cam 16 and the pivot lever 5, which holds the locking cam 16 securely but still readily allows adjustment of the locking cam 16 back into the detent position. The pivot lever 5 can now be moved back in the return direction R towards the starting position and beyond, without this movement being blocked by the locking mechanism 19.
The adjustment of the locking cam 16 from the detent position in which the locking cam 16 is held by the retaining element 20 in contact with the sprocket 12, into the disengaged position in which the locking cam 16 is spaced apart from the sprocket 12, also takes place against the restoring force of the securing spring means 28, which presses the securing cam 27 in the release position against the locking cam 16. The free end of the securing cam 27 is thus no longer arranged in the recess 29 of the locking cam 16.
The pivot lever 5 can now be adjusted into the return direction, since the locking cam 16 and the sprocket 12 are held out of engagement with each other, and thereby reach the position shown in Fig. 6, in which the control disc 7 is in contact with the locking stop 22 on the locking cam 16. If the pivot lever 5 is then further pivoted in the return direction R, the locking cam 16 is pushed out of the disengaged position and shifted into the detent position in which the locking cam 16 is no longer held spaced apart from the sprocket 12, but comes into engagement with the sprocket 12. In this case, the locking cam 16 comes into contact with a returning end stop 26 on the receptacle 13 of the pivot lever 5. The pivot lever 5 is then in a corresponding end position, which is the starting position shown in Fig. 3. The control disc 7 presses the locking cam 16 with the locking stop 22 against the receptacle 13 with the returning end stop 26. A further adjustment of the pivot lever 5 in the return direction R is thus reliably blocked. Furthermore, the securing cam 27 has been reset as a result of the restoring force of the securing spring means 28 from the release position into the securing position in which the free end of the securing cam 27 is arranged in the recess 29 of the locking cam and the movement of the locking cam 16 when re-adjusting the pivot
The adjustment of the locking cam 16 from the detent position in which the locking cam 16 is held by the retaining element 20 in contact with the sprocket 12, into the disengaged position in which the locking cam 16 is spaced apart from the sprocket 12, also takes place against the restoring force of the securing spring means 28, which presses the securing cam 27 in the release position against the locking cam 16. The free end of the securing cam 27 is thus no longer arranged in the recess 29 of the locking cam 16.
The pivot lever 5 can now be adjusted into the return direction, since the locking cam 16 and the sprocket 12 are held out of engagement with each other, and thereby reach the position shown in Fig. 6, in which the control disc 7 is in contact with the locking stop 22 on the locking cam 16. If the pivot lever 5 is then further pivoted in the return direction R, the locking cam 16 is pushed out of the disengaged position and shifted into the detent position in which the locking cam 16 is no longer held spaced apart from the sprocket 12, but comes into engagement with the sprocket 12. In this case, the locking cam 16 comes into contact with a returning end stop 26 on the receptacle 13 of the pivot lever 5. The pivot lever 5 is then in a corresponding end position, which is the starting position shown in Fig. 3. The control disc 7 presses the locking cam 16 with the locking stop 22 against the receptacle 13 with the returning end stop 26. A further adjustment of the pivot lever 5 in the return direction R is thus reliably blocked. Furthermore, the securing cam 27 has been reset as a result of the restoring force of the securing spring means 28 from the release position into the securing position in which the free end of the securing cam 27 is arranged in the recess 29 of the locking cam and the movement of the locking cam 16 when re-adjusting the pivot
- 21 -joint 1 is not hindered by pivoting the pivot lever 5. Now, the pivot lever 5 can thus be pivoted again with the locking cam 16 in meshing engagement in the sprocket 12 in the adjustment direction E, to set the functional part in a comfortable position.
In Fig. 7, the control disc 7 is shown separately. The release stop 21 and the locking stop 22 are offset from each other in a certain angle range WB. However, the actual adjustment angle EW or the actual adjustment range is less than the angle range WB
between the release stop 21 and the locking stop 22, since the control disc 7 still has to accomplish the adjustment of the locking cam 16 from the detent position to the disengaged position and back.
For this purpose, release angle ranges are provided at the end of the angle range WB, which describe the release angle AW or the release path of the pivot lever 5 relative to the mounting lever 2, which is required to move the locking cam 16 from the detent position to the disengaged position and back. What remains of the actual angle range WB
corresponds to the adjustment angle EW or the adjustment range that can be used for adjusting the functional part.
The release angle AW or the release path which adjoins the adjustment angle EW
on the right can also be referred to as a disengaging angle or disengaging path. The corresponding angle or path is used when adjusting the pivot lever 5 for disengaging the locking cam 16 from the sprocket 12, so that the locking cam 16 and the sprocket 12 are disengaged.
Correspondingly, the release angle AW or the release path which adjoins the adjustment angle EW on the left can also be referred to as an engaging angle or engaging path. The corresponding angle or path is used when adjusting the pivot lever 5 for re-engagement of the locking cam 16 in the sprocket 12, so that the locking cam 16 and the sprocket 12 again engage with each other.
The adjustment angle EW can thereby be specified in a defined manner by the angle range
In Fig. 7, the control disc 7 is shown separately. The release stop 21 and the locking stop 22 are offset from each other in a certain angle range WB. However, the actual adjustment angle EW or the actual adjustment range is less than the angle range WB
between the release stop 21 and the locking stop 22, since the control disc 7 still has to accomplish the adjustment of the locking cam 16 from the detent position to the disengaged position and back.
For this purpose, release angle ranges are provided at the end of the angle range WB, which describe the release angle AW or the release path of the pivot lever 5 relative to the mounting lever 2, which is required to move the locking cam 16 from the detent position to the disengaged position and back. What remains of the actual angle range WB
corresponds to the adjustment angle EW or the adjustment range that can be used for adjusting the functional part.
The release angle AW or the release path which adjoins the adjustment angle EW
on the right can also be referred to as a disengaging angle or disengaging path. The corresponding angle or path is used when adjusting the pivot lever 5 for disengaging the locking cam 16 from the sprocket 12, so that the locking cam 16 and the sprocket 12 are disengaged.
Correspondingly, the release angle AW or the release path which adjoins the adjustment angle EW on the left can also be referred to as an engaging angle or engaging path. The corresponding angle or path is used when adjusting the pivot lever 5 for re-engagement of the locking cam 16 in the sprocket 12, so that the locking cam 16 and the sprocket 12 again engage with each other.
The adjustment angle EW can thereby be specified in a defined manner by the angle range
- 22 -WB of the control disc 7 between the release stop 21 and the locking stop 22.
In addition, the starting position of the pivot lever 5 can be specified by the position of the locking stop 22 and/or by the angle position in which the control disc 7 is connected to the sprocket element 3. If the starting position is to be changed, only the angle position of the control disc 7 to the sprocket element 3 must be changed or another control disc 7 used. If the adjustment angle EW is to be changed, only the control disc 7 must be replaced by a control disc 7 with a different adjustment angle EW. The pivot joint 1 may otherwise remain unchanged.
In principle, it is pointed out that the components connected non-rotatably with the mounting lever 2 in the present and in this respect preferred pivot joint 1, could likewise be non-rotatably connected with the pivot lever 5. Then preferably the components currently connected non-rotatably to the pivot lever 5 are connected non-rotatably with the mounting lever 2 in return. Furthermore components are provided for those skilled in the art, which can be connected non-rotatably optionally to the mounting lever 2 or the pivot lever 5.
Alternatively or additionally, components can also be non-rotatably connected with neither the mounting lever 2 nor the pivot lever 5. For example, the last two components may include the mounting axis 4.
LIST OF REFERENCE NUMERALS
1 Pivot joint 2 Mounting lever 3 Sprocket element 4 Mounting axis Pivot lever 6 Joint pivot axis
In addition, the starting position of the pivot lever 5 can be specified by the position of the locking stop 22 and/or by the angle position in which the control disc 7 is connected to the sprocket element 3. If the starting position is to be changed, only the angle position of the control disc 7 to the sprocket element 3 must be changed or another control disc 7 used. If the adjustment angle EW is to be changed, only the control disc 7 must be replaced by a control disc 7 with a different adjustment angle EW. The pivot joint 1 may otherwise remain unchanged.
In principle, it is pointed out that the components connected non-rotatably with the mounting lever 2 in the present and in this respect preferred pivot joint 1, could likewise be non-rotatably connected with the pivot lever 5. Then preferably the components currently connected non-rotatably to the pivot lever 5 are connected non-rotatably with the mounting lever 2 in return. Furthermore components are provided for those skilled in the art, which can be connected non-rotatably optionally to the mounting lever 2 or the pivot lever 5.
Alternatively or additionally, components can also be non-rotatably connected with neither the mounting lever 2 nor the pivot lever 5. For example, the last two components may include the mounting axis 4.
LIST OF REFERENCE NUMERALS
1 Pivot joint 2 Mounting lever 3 Sprocket element 4 Mounting axis Pivot lever 6 Joint pivot axis
- 23 -7 Control disc 8, 9 Groove 10,11 Tongue 12 Sprocket 13 Receptacle 14, 15 Cover element 16 Locking cam 17 Toothing 18 External toothing 19 Locking mechanism 20 Retaining element 21 Release stop 22 Locking stop 23 Adjusting end stop
24 Retaining stop
25 Retaining means
26 Returning end stop
27 Securing cam
28 Securing spring means
29 Recess
30 Release sliding surface
31 Release sliding surface
32 Opening
33 Bolt Adjustment direction Return direction AW Release angle EW Adjustment angle WB Angle range
Claims (15)
1. Pivot joint (1) for adjusting a functional part, in particular a head part, a foot part or an armrest, of a piece of furniture, in particular seating furniture and/or upholstered furniture, with a mounting lever (2) for mounting the pivot joint (1) on the furniture and a pivot lever (5) for carrying and adjusting the functional part, wherein the mounting lever (2) and the pivot lever (5) are connected pivotably in an adjustment direction (E) about a joint pivot axis (6), from a starting position to an end position, against each other, wherein the pivot lever (5) is locked against pivoting in the return direction (R) opposite to the adjustment direction (E) in a plurality of locking positions provided between the starting position and the end position by a blocking positive locking of a locking mechanism (19), wherein the locking mechanism (19) comprises a locking cam (16) and a sprocket (12) rotatable in a direction relative to the locking cam (16) and wherein the locking cam (16) is provided to be adjustable by a pivoting of the pivot lever (5) from a detent position engaging with the sprocket (12) into a disengaged position disengaged from the sprocket (12) and back, characterised in that a securing cam (27) is provided, which can be adjusted against the restoring force of a securing spring means (28) from a securing position into a release position, and can be adjusted in the direction of the restoring force back from the release position into the securing position, and in that in the securing position the securing cam (27) prevents accidental adjustment of the locking cam (16) from the detent position into the disengaged position and in the release position releases an adjustment of the locking cam (16) from the detent position into the disengaged position, and in that the securing cam (27) can be adjusted by adjusting the pivot lever (5) from the securing position into the release position
2. Pivot joint according to Claim 1, characterised in that the locking cam (16) has a release sliding surface (30) which can be brought into contact with the securing cam (27) and in that the release sliding surface (30) is inclined from the securing position into the release position with respect to the adjustment direction of the securing cam (27), so that the locking cam (16) can adjust the securing cam (27) by contact with the release sliding surface (30) from the securing position into the direction of the release position, in particular into the release position.
3. Pivot joint according to Claim 1 or 2, characterised in that the securing cam (27) has a release sliding surface (31) which can be brought into contact with the locking cam (16) and in that the release sliding surface (31) is inclined from the securing position into the release position with respect to the adjustment direction of the securing cam (27), so that the locking cam (16) can adjust the securing cam (27) by contact with the release sliding surface (31) from the securing position into the direction of the release position, in particular into the release position, and in that, preferably the release sliding surfaces (30, 31) of the securing cam (27) and the locking cam (16) are designed to be brought into contact with each other for sliding contact with each other for adjusting the securing cam (27) from the securing position to the release position by adjusting the pivot lever (5).
4. Pivot joint according to any one of Claims 1 to 3, characterised in that the securing cam (27) is adjustable between the securing position and the release position and back in a direction parallel to the joint pivot axis (6).
5. Pivot joint according to any one of Claims 1 to 4, characterised in that the sprocket (12) has an external toothing (18) pointing away from the joint pivot axis (6) and/or that the sprocket (12) is provided circumferentially, in particular infinitely, around the joint axis (6) and/or that the locking cam (16) has a toothing (17) corresponding to the sprocket (12).
6. Pivot joint according to any one of Claims 1 to 5, characterised in that at least one control disc (7) is provided, which is rotatable and releasable relative to the locking cam (16) at least in sections together with the sprocket (12), in that a release stop (21) of the control disc (7) can be brought into contact with the locking cam (16) when pivoting the pivot lever (5) in the adjustment direction (E), in order to adjust the locking cam (16) into a disengaged position, disengaged from the sprocket (12), in that the pivot lever (5) can be pivoted in the return direction (R) back into the starting position with the locking cam (16) in the disengaged position, and in that a locking stop (22) of the control disc (7) can be brought into contact with the locking cam (16) when pivoting the pivot lever (5) in the return direction (R), in order to adjust the locking cam (16) in the starting position into a detent position engaging with the sprocket (12).
7. Pivot joint according to Claim 6, characterised in that the release stop (21) and the locking stop (22) of the control disc are provided abutting on sections of the locking cam (16) projecting laterally with respect to the sprocket, and/or in that the control disc (7) is held, in particular is fixed, at least partially positively non-rotatable relative to the sprocket (12).
8. Pivot joint according to Claim 6 or 7, characterised in that the control disc (7) and a sprocket element (3) carrying the sprocket (12) are inserted onto each other and/or into each other, and in that, preferably, the sprocket element (3) and the control disc (7) comprise a plurality of corresponding groove/tongue connections, in order to connect the control disc (7) with the sprocket element (3) in different rotational positions.
9. Pivot joint according to any one of Claims 1 to 8, characterised in that the mounting lever (2) and the pivot lever (5) are interconnected via a mounting axis (4) and in that, preferably, the control disc (7) and the sprocket (12) are mounted on the mounting axis (4) and are held rotatably about the mounting axis (4).
10. Pivot joint according to any one of Claims 6 to 9, characterised in that the mounting lever (2) or the pivot lever (5) forms a receptacle (13) for receiving the sprocket (12), control disc (7) and locking cam (16) and in that, preferably, the receptacle (13) for positioning the control disc (7) to the locking cam (16) and/or to the sprocket (12) is closed on both sides by cover elements (14, 15).
11. Pivot joint according to any one of Claims 1 to 10, characterised in that the locking cam (16) is held, in particular clamped, in the disengaged position by a retaining element (20), preferably in the form of a spring element, and in that, preferably, the locking cam (16) has a retaining stop (24) and in that the spring element is provided in such a way that, in the disengaged position, the restoring force of the spring element brings the retaining stop (24) of the locking cam (16) into contact with a retaining means (25) of the mounting lever (2) and/or of the pivot lever (5).
12. Pivot joint according to any one of Claims 1 to 11, characterised in that the locking cam (16) has an adjusting end stop (23) for contact with the mounting lever (2) and/or with the pivot lever (5) when adjusting the pivot lever (5) into an end position in the adjustment direction (E) and in that, preferably, the locking cam (16) is in contact with the release stop (21) of the control disc (7) in the end position of the pivot lever (5) in the adjustment direction (E).
13. Pivot joint according to any one of Claims 1 to 12, characterised in that the locking cam (16) has a returning end stop (26) for contact with the mounting lever (2) and/or with the pivot lever (5) when adjusting the pivot lever (5) into an end position in the return direction (R) and in that, preferably, the locking cam (16) is in contact with the locking stop (22) of the control disc (7) in the end position of the pivot lever (5) in the return direction (R).
14. Pivot joint according to Claim 12 or 13, characterised in that the locking cam (16) is clamped between the control disc (7) on the one hand and the mounting lever (2) and/or pivot lever (5) on the other hand in the end position of the pivot lever (5) in the adjustment direction (E) and/or in that the locking cam (16) is clamped between the control disc (7) on the one hand and the mounting lever (2) and/or pivot lever (5) on the other hand in the end position of the pivot lever (5) in the return direction (R).
15. Pivot joint according to any one of Claims 6 to 15, characterised in that the control disc (7) defines an angle range (WB) between the release stop (21) and the locking stop (22) and in that, preferably, the angle range (WB), the release angle (AW) and/or release path for adjusting the locking cam (16) from the detent position to the disengaged position and the release angle (AW) and/or release path for adjusting the locking cam (16) from the disengaged position to the detent position define the adjustment angle (EW) for adjusting the pivot joint (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018111395.1A DE102018111395A1 (en) | 2018-05-14 | 2018-05-14 | Swivel joint with defined pressure point |
| DE102018111395.1 | 2018-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3043094A1 true CA3043094A1 (en) | 2019-11-14 |
Family
ID=66529811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3043094A Abandoned CA3043094A1 (en) | 2018-05-14 | 2019-05-13 | Pivot joint with defined pressure point |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3569107A1 (en) |
| CA (1) | CA3043094A1 (en) |
| DE (1) | DE102018111395A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020103940A1 (en) | 2020-02-14 | 2021-08-19 | Ferdinand Lusch Gmbh | Swivel joint for dampened adjustment of a functional part |
| DE102020105189A1 (en) | 2020-02-27 | 2021-09-02 | Ferdinand Lusch Gmbh | Swivel joint for adjusting a functional part with a clamping element |
| CN113745860A (en) * | 2020-05-29 | 2021-12-03 | 贵州电网有限责任公司 | Secondary test line variable angle adapter |
| CN112193174B (en) * | 2020-10-30 | 2021-04-23 | 威海莫霖车业有限公司 | Display screen support with one-key reset function for motor home |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20112976U1 (en) * | 2001-08-13 | 2001-10-18 | Franke Gmbh & Co Kg | Swivel fitting |
| DE202007006758U1 (en) * | 2007-05-08 | 2007-07-19 | Ferdinand Lusch Gmbh & Co. Kg | Detent fitting for seating or reclining furniture, has blocking unit pivotably fastened at strap by common pivoting axis arranged centrally in circular arc shaped head including external teeth, where unit is designed as wedge-shaped unit |
-
2018
- 2018-05-14 DE DE102018111395.1A patent/DE102018111395A1/en active Pending
-
2019
- 2019-05-13 EP EP19173986.1A patent/EP3569107A1/en not_active Withdrawn
- 2019-05-13 CA CA3043094A patent/CA3043094A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018111395A1 (en) | 2019-11-14 |
| EP3569107A1 (en) | 2019-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20231114 |