LID REST FOR A FURNITURE

Description

[0001] The invention relates to a lid adjuster for a piece of furniture. The lid adjuster comprises a housing, a power storage device arranged inside the housing, a coupling element coupled to the power storage device and driven by it so as to be movable about an output axis, and an adjusting arm arranged on the outside of the housing and coupled to the coupling element in such a way that the adjusting arm is driven to rotate about an adjusting axis.

[0002] Such a lid opener is known from EP 3 719 242 A1. The lid opener described therein comprises an actuating arm that is pivotably mounted on a base element about an actuating axis between an open position and a closed position. A toggle lever mechanism has a first lever and a second lever that are pivotably connected to each other about a pivot axis. Furthermore, a force storage device is provided that applies force to the toggle lever mechanism. The force storage device acts at a first pivot point on the first lever, spaced apart from the pivot axis, and at a second pivot point on the second lever, spaced apart from the pivot axis, with the first pivot point and the second pivot point being acted upon by the force storage device in a direction towards each other.Between the first lever and the adjusting arm, an adjusting contour arrangement is arranged, comprising an adjusting contour and a guide element. The guide element is movable along the adjusting contour, and the adjusting arm is subjected to a force by the first lever via the adjusting contour arrangement in the direction of rotation about the adjusting axis. The adjusting contour is formed on the first lever, and the guide element is attached to the adjusting arm at a distance from the adjusting axis.

[0003] Another lid holder is known from WO 2022 / 082242 A1.

[0004] Lid stays are used to hold upward-opening furniture lids in the open position or to move them towards the open position. Lid stays can also be designed to hold a lid in any desired position.

[0005] There are different opening mechanisms for furniture lids. A folding lift mechanism consists of an upper and a lower lid half. The upper lid half is attached to the top of a furniture carcass via one or more hinges, allowing it to pivot around a horizontal axis. The lower lid half is attached to the upper lid half via one or more hinges, allowing it to pivot around another horizontal axis. When the lid is closed, the two lid halves are positioned vertically, one above the other, in a common plane. The folding lift mechanism engages the lower end of the lower lid half with an actuating arm, folding the lid as it opens so that the two lid halves pivot towards each other and close together.

[0006] With a lift-up lid, the lid is a single piece and supported against the cabinet solely by the lid support. Unlike a folding lid, the lid is not hinged to the top of the cabinet. When opened, the lid moves upwards and pivots around a horizontal axis that moves within the room. In this way, the lid can swing over the top of the cabinet.

[0007] With a parallel lift mechanism, the lid is also a single piece and is supported against the furniture body solely by the lid support. The lid is not hinged to the top of the furniture body. When opened, the lid is moved parallel to itself, meaning it is lifted upwards, always remaining parallel to its starting position.

[0008] These different connection types typically require different angular ranges over which an actuating arm must be able to pivot to drive the lid. Therefore, specially adapted lid actuators are usually provided for different opening types.

[0009] Different energy storage devices are used for the three opening types. If only one energy storage device or lid opener is to be used for all opening types, compromises must be made regarding the lid's open position or the utilization of the lid opener's load-bearing capacity. With a folding lift fitting, the opening angle, i.e., the rotation angle of the operating arm from the closed position to the open position, is approximately 110°. With a lift-up fitting, the opening angle is approximately 140°, and with a parallel lift fitting, it is 155°.

[0010] If a lid fitting is to be used for all three opening types, it must allow an opening angle of 155°, although only 110° of this is utilized when used as a folding lift fitting. This means that the energy stored in the power unit is not fully utilized, and the usable weight of the lid is reduced. If a lid fitting with an opening angle of only 110° is used, it cannot fully open the lid when used as a parallel lift fitting, thus restricting access to the furniture.

[0011] The object of the present invention is to provide a lid holder that can be used for different types of openings by means of simple adjustments.

[0012] The problem is solved by a lid adjuster for a piece of furniture, comprising a housing, a power storage device located inside the housing, a coupling element coupled to the power storage device and driven by it so as to be movable about an output axis, and an adjusting arm located on the outside of the housing and coupled to the coupling element in such a way that the adjusting arm is driven to rotate about an adjusting axis. Furthermore, the lid adjuster has a gearbox located on the outside of the housing, through which the adjusting arm is coupled to the coupling element in such a way that an input rotation angle of the coupling element about the output axis is converted into a different output rotation angle of the adjusting arm about the adjusting axis.

[0013] The output rotation angle can be larger or smaller than the input rotation angle. It is also possible, in principle, for the output rotation angle to be identical to the input rotation angle, in which case the gearbox could be omitted.

[0014] The movement of the coupling element around the drive axis can be a translational movement of the coupling element along a circular path or an arc segment of a circle, with the center of the circular path or circle lying on the output axis. Alternatively, it is also possible for the coupling element to rotate around the drive axis.

[0015] Thus, depending on the maximum opening angle of the coupling element and the required opening type, the lid adjuster can be adapted by appropriately dimensioning the gearbox so that the output rotation angle of the adjusting arm corresponds to the required opening angle of the opening type. This ensures that the lid adjuster always covers the entire required opening angle.

[0016] The actuating axis of the actuating arm can be arranged parallel, in particular coaxially, to the drive axis of the coupling element.

[0017] The gearbox can have a gearbox input element that is rigidly coupled to the coupling element with respect to the drive axis. The gearbox can also have a gearbox output element that is rigidly coupled to the actuating arm with respect to the actuating axis. "Radiationally rigid" means that the two interconnected elements rotate together around their respective axis without any differential rotation. This also means, for example, that the coupling element can be rotatably attached to the gearbox input element about a longitudinal axis of the coupling element that is parallel to the drive axis, but rotates with it around the drive axis without any deviation in rotation.

[0018] The gearbox input element can be rotatably arranged around the drive axis of the coupling element.

[0019] The transmission could be a gear transmission, such as a planetary gear or spur gear transmission. Linkage transmissions or lever transmissions are also conceivable.

[0020] In the case of a planetary gear system, the gear system has a sun gear, a planet carrier with planet gears rotatably mounted on it, and a ring gear, whereby the gear system can be arranged on the actuating arm.

[0021] One of the elements from the group consisting of sun gear, planet carrier, and ring gear forms the transmission input element, and another element from the group consisting of sun gear, planet carrier, and ring gear forms the transmission output element. The third element from this group is preferably fixed in place and not rotatable, for example, on the housing of the lid adjuster.

[0022] In one exemplary embodiment, the planet carrier forms the transmission input element and the ring gear the transmission output element. The sun gear can be fixed and non-rotatable, for example, attached to the housing.

[0023] In an exemplary embodiment, the adjusting arm can have a gear mounting section that forms the ring gear of the transmission or is connected to the ring gear, wherein an adjusting section projects radially from the gear mounting section with respect to the adjusting axis and is designed to be coupled to a cover of the furniture at an end remote from the gear mounting section. "Radial" here means that the adjusting section extends from the inside outwards from the gear mounting section. The adjusting section need not follow a straight, imaginary radius.

[0024] The gearbox mounting section of the adjusting arm can be designed in a plate-like shape, wherein, viewed in the direction of the adjusting axis of the adjusting arm, the ring gear and the planet gears are arranged on one side of the gearbox mounting section and the planet carrier is arranged on the side of the gearbox mounting section facing away from this.

[0025] The sun wheel can be connected to a bolt in a rotationally fixed manner, which in turn is attached to the housing of the lid adjuster in a rotationally fixed manner.

[0026] The actuating arm with the gearbox can be supported solely by the coupling element and the bolt against the housing and / or the energy storage device. This results in a defined and simple support structure, as well as easy mounting of the actuating arm and gearbox to the housing. Furthermore, this design allows for modifications to the fitting for different opening kinematics by enabling the installation of different actuating arms and gearboxes. The energy storage device and other components do not require modification. Since the actuating arm and gearbox are mounted externally to the housing, adjustments to the lid actuator can be made easily. It is also conceivable to mount an actuating arm without a gearbox.

[0027] Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. These show Figure 1 is a simplified perspective view of a furniture carcass with a lid support in the form of a folding lift fitting in a closed position; Figure 2 is a simplified perspective view according to Figure 1 , wherein the lid support is in its open position, Figure 3 a simplified perspective view of a furniture carcass with a lid support in the form of a lift-up fitting in a closed position, Figure 4 a simplified perspective view according to Figure 3 , wherein the lid support is in its open position, Figure 5 a simplified perspective view of a furniture carcass with a lid support in the form of a parallel lift fitting in a closed position, Figure 6 a simplified perspective view according to Figure 5, wherein the lid support is in its open position, Figure 7 a simplified perspective view of a furniture carcass with another embodiment of a lid support in the form of a parallel lift fitting in an open position, wherein the gear for converting an input rotation angle into an output rotation angle is shown, Figure 8 a side view of the lid support according to Figure 7 Figure 9 is a perspective exploded view of the lid adjuster according to Figure 7, Figure 10 is a perspective view of another embodiment of an adjusting arm with gear and Figure 11 is a perspective view of a further embodiment of a lid adjuster with a gear in the form of a spur gear.

[0028] The Figures 1 to 6 To illustrate different opening types, a furniture body 1 with different lids 2 and a lid support 3 adapted to the respective opening type are shown. Figures 1 and 2Figures 3 and 4 show a folding lift fitting, figures 3 and 4 a lift-up fitting, and the Figures 5 and 6 a parallel lift fitting.

[0029] The furniture carcass 1 is identical in each case and is shown in a longitudinal section. The furniture carcass 1 has a base 4, a top 5, a back panel 6 and a side panel 7, which form a receiving space 8 of the furniture carcass 1, which can be closed by the lid 2.

[0030] In the case of a folding lift fitting according to the Figures 1 and 2 The lid 2 has an upper lid half 9 and a lower lid half 10. The upper lid half 9 is pivotally attached to the top surface 5 of the furniture body 1 about a horizontal first axis A 1 via a hinge 12 at an upper edge 11. The lower lid half 10 is pivotally attached to the upper lid half 9 about a horizontal second axis A 2 via a hinge 13. In a closed position of the lid 2 according to Figure 1The two lid halves 9, 10 are arranged vertically one above the other in a common plane. The lid adjuster 3 has an adjusting arm 14 which is pivotably attached to a housing 15 of the lid adjuster 3 about an adjusting axis S. The adjusting arm 14 is also pivotably connected to the lower lid half 10 about a connecting axis V. Inside the housing 15, a force storage device (not shown) is arranged, which applies force to the adjusting arm 14 in the direction of rotation about the adjusting axis S such that, at least over part of the pivoting travel of the adjusting arm 14, the lid 2 moves in the direction of the Figure 2 The open position shown is subjected to force. When transferring the cover 2 from the in Figure 1 the depicted closing position in the Figure 2 In the open position shown, the lid 2 is folded, whereby the two lid halves 9, 10 are pivoted towards each other about the connecting axis V and approach each other.

[0031] During the Figures 1 and 2 For the illustrated opening mode of the folding lift fitting, an opening angle α of approximately 110° is required to ensure optimal positioning of the cover 2 in the open position, where access to the receiving space 8 of the furniture body 1 is largely unrestricted. The opening angle α corresponds to the rotation angle of the actuating arm 14 from the closed position ( Figure 1 ) for disclosure ( Figure 2 ).

[0032] In the case of the swivel fitting according to the Figures 3 and 4 The lid 2 is formed in one piece and is supported against the furniture body 1 solely by the lid support 3. Unlike a folding lid, the lid 2 is not hinged to the top panel 5 of the furniture body 1. When the lid 2 is opened, it moves upwards and pivots around a horizontal axis that moves in space. During this movement, the lid 2 partially pivots over the top panel 5 of the furniture body 1.

[0033] To enable this movement of the lid 2, an adjusting arm 14 is provided, similar to the lift-up fitting, which is pivotably attached to the housing 15 about an adjusting axis S. The adjusting arm 14 is further connected to a mounting fitting 16 in the form of a coupling arm, which is fixedly attached to the lid 2, and pivotably connected about a connecting axis V. The lid adjuster 3 also has a guide arm 17, which is pivotably attached to the housing 15 of the lid adjuster 3 about a first guide axis F1. The guide arm 17 is further pivotably connected to the mounting fitting 16 about a second guide axis F2. The adjusting arm 14 and the guide arm 17, together with the housing 15 of the lid adjuster 3 and the coupling arm 16, form a trapezoid.

[0034] As with the folding lift fitting, a power storage device (not shown here) is arranged inside the housing 15, via which the actuating arm 14 is subjected to force in the direction of rotation about the actuating axis S, such that at least over part of the pivoting travel of the actuating arm 14 the cover 2 moves in the direction of the Figure 4 The open position shown is subjected to force.

[0035] To enable this movement of the cover 2, the actuating arm 14 and the guide receptacle 17 can also be pivotally hinged to the cover 2 via the mounting bracket 16 or two separate mounting brackets in such a way that the connecting axis V and the second guide axis F2 are arranged one above the other and not, as in Figure 3 displayed one after the other.

[0036] During the Figures 3 and 4For the illustrated opening type of the lift-up fitting, an opening angle α of the actuating arm 14 of approximately 140° is to be provided for an optimal arrangement of the lid 2 in the open position, in which access to the receiving space 8 of the furniture body 1 is largely unrestricted.

[0037] In the case of a parallel lift fitting according to the Figures 5 and 6 The lid 2, like the lift-up fitting, is formed in one piece and supported against the furniture body 1 solely by the lid support 3. Unlike a folding lid, the lid 2 is not pivotally attached to the top 5 of the furniture body 1 via hinges. When opened, the lid 2 is moved parallel to the furniture body, i.e., it is moved upwards, always remaining parallel to its initial position.

[0038] In order to enable this movement sequence of the lid 2, the lid fitting 3 has, similar to the lift-up fitting, an adjusting arm 14 and a guide arm 17, which, however, do not form a trapezoid as with a lift-up fitting, but are arranged in the form of a parallelogram to each other.

[0039] As with the folding lift fitting, a power storage device (not shown here) is arranged inside the housing 15, via which the actuating arm 14 is subjected to force in the direction of rotation about the actuating axis S, such that at least over part of the pivoting travel of the actuating arm 14 the cover 2 moves in the direction of the Figure 6 The open position shown is subjected to force.

[0040] During the Figures 5 and 6For the illustrated opening type of the parallel lift fitting, an opening angle α of approximately 155° is to be provided for an optimal arrangement of the lid 2 in the open position, in which access to the receiving space 8 of the furniture body 1 is largely unrestricted.

[0041] To enable the three opening types shown with one and the same energy storage device, as in the Figures 7 to 9 As shown, a gearbox 18 is provided that adapts a maximum output rotation angle of the actuating arm 14 to the required opening angle α. Figures 7 to 9 The lid holder 3 is shown in different views and is described together below.

[0042] Figure 7 The diagram shows gearbox 18 without a cover, so that the details of gearbox 18 are visible. In the Figures 8 and 9 The housing 15 is shown without a housing side wall 19, so that the power storage device 20, which is arranged inside the housing 15, is visible.

[0043] The energy storage device 20 comprises a compression spring 21 in the form of a helical spring. The compression spring 21 is pivotally connected on one side to a base plate 22 of the housing 15 of the lid adjuster 3 and on the other side to a lever 23. The compression spring 21 is pre-tensioned against the base plate 22 on one side and against the lever 23 on the other.

[0044] The lever 23 is pivotably mounted on the base plate 22 about a lever axis H, with the pivot point of the compression spring 21 on the lever 23 being radially spaced from the lever axis H. The compression spring 21 thus acts on the lever 23 in the direction of rotation about the lever axis H.

[0045] The lever 23 has an actuating contour 24 with which the lever 23 is supported against a coupling element 25 and drives the coupling element 25 movably about an output axis T. As will be explained below, the coupling element 25 is movable along a circular arc about the output axis T.

[0046] The coupling element 25 has a roller 26 which is rotatably mounted on a bolt 27 about a roller axis R. Thus, when the lever 23 pivots, the roller 26 can roll along the positioning contour 24 and therefore avoid friction losses.

[0047] The coupling element 25 is coupled to the adjusting arm 14 via the gearbox 18 in such a way that an input rotation angle of the coupling element 25 with respect to the output axis T is converted into an output rotation angle of the adjusting arm 14 about the adjusting axis S that differs from the input rotation angle.

[0048] The gearbox 18 is attached to the adjusting arm 14 and is located outside the housing 15 of the lid adjuster 3. The gearbox 18 is designed in the form of a planetary gearbox and has a sun gear 28, a planet carrier 29, three planet gears 30 and a ring gear 31.

[0049] The adjusting arm 14 has a gearbox mounting section 32 to which the gearbox 18 is attached. The gearbox mounting section 32 is plate-shaped. The planet carrier 29 is arranged on a side of the gearbox mounting section 32 facing the energy storage device 20. The planet carrier 29 is rotatably mounted on a bolt 33 about the output axis T of the coupling element 25 and the pivot axis S of the adjusting arm 14, with the output axis T and the adjusting axis S being coaxial to each other. The bolt 33 is non-rotatably connected to the base plate 22. The bolt 27 of the coupling element 25 is connected to the planet carrier 29, with the roller axis H arranged parallel to and spaced apart from the output axis T and the adjusting axis S, respectively.

[0050] The planet carrier 29 is also plate-shaped and arranged between the gearbox mounting section 32 and the power drive 20. The planet carrier 29 is driven about the output axis T by the coupling element 25, which is driven by the power drive 20 about the output axis T.

[0051] On the side of the gearbox mounting section 32 facing away from the power drive 20, the ring gear 31 is fixedly connected to the gearbox mounting section 32 coaxially with the pivot axis S. The bolt 33 projects through the planet carrier 29 and through the gearbox mounting section 32 of the adjusting arm 14 and extends into the ring gear 31. The planet carrier 29 and the adjusting arm 14 are rotatably mounted on the bolt 33. The sun gear 28 is non-rotatably connected to the bolt 33.

[0052] The planet gears 30 are arranged between the sun gear 28 and the ring gear 31 such that they mesh with the sun gear 28 on one side and with the ring gear 31 on the other. Each planet gear 30 is rotatably mounted on a bolt 34, the bolts 34 being fixedly connected to the planet carrier 29. For this purpose, arc-shaped slots 35, 36 are provided in the transmission mounting section 32, through which the bolts 34 protrude. The slots 35, 36 have a circumferential length sufficient to allow the planet carrier 29 to rotate a sufficient degree relative to the transmission mounting section 32.

[0053] The planet carrier 29 forms a gear input element of the gear unit 18, which is driven in the direction of rotation by the coupling element 25. The ring gear 31 forms a gear output element of the gear unit 18, via which the adjusting arm 14 is driven in the direction of rotation about the adjusting axis S. In the illustrated embodiment with the gear unit 18 in the form of a planetary gear unit, the rotational speed or angular velocity of the gear input element (planet carrier) is converted into a higher rotational speed or angular velocity of the gear output element (ring gear). This converts an input rotation angle of the coupling element 25 with respect to the output axis T, which is arranged coaxially to the adjusting axis S, into a larger output rotation angle of the adjusting arm 14 with respect to the adjusting axis S.

[0054] Figure 10Figure 1 shows another embodiment of an adjusting arm 14 with a gearbox 18. The gearbox 18 is also designed as a planetary gearbox. In contrast to the embodiment according to Figure 2, the gearbox 18 is designed as a planetary gearbox. Figures 7 to 9 All elements of the transmission 18 are located on one side of the transmission mounting section 32, namely on the side facing the power storage unit 20.

[0055] Figure 11Figure 1 shows another embodiment of a lid adjuster 3 with a gearbox 18 in the form of a spur gear drive. The gearbox 18 comprises an input spur gear 38, which is driven by the coupling element (not shown here), the coupling element being guided through a slot 37 in the housing side wall 19 from inside the housing 15. The input spur gear 38 meshes with an intermediate spur gear 39, which in turn meshes with an output spur gear 40. The input spur gear 38, the intermediate spur gear 39, and the output spur gear 40 are all rotatably mounted on the housing 15 about axes arranged parallel to each other. The input spur gear 38 is rotatably mounted about the output axis T, about which the coupling element is moved. In this embodiment, the actuating axis S of the actuating arm 14 is arranged parallel to and spaced apart from the output axis T. The output spur gear 40 is non-rotatably connected to the adjusting arm 14.

[0056] In principle, other energy storage devices 20 can be used, which, for example, have other means of storing energy instead of a compression spring 21. Likewise, it is not absolutely necessary that a lever 23 be provided to drive the coupling element 25. The energy storage device 20 can also, for example, act directly on the coupling element 25. Other types of gears 18 are also conceivable, such as a lever gear. Furthermore, the gear 18 can also be designed such that the input rotation angle of the coupling element 25 is greater than the output rotation angle of the adjusting arm 14. Reference symbol list

[0057] 1 Furniture body 2 Lid 3 Lid support 4 Base 5 Top 6 Back panel 7 Side panel 8 Mounting chamber 9 Upper lid half 10 Lower lid half 11 Upper edge 12 Hinge 13 Hinge 14 Adjusting arm 15 Housing 16 Mounting fitting 17 Guide arm 18 Gearbox 19 Housing side panel 20 Energy storage 21 Compression spring 22 Base plate 23 Lever 24 Adjusting contour 25 Coupling element 26 Roller 27 Bolt 28 Sun gear 29 Planetary gear carrier 30 Planetary gear 31 Ring gear 32 Gearbox mounting section 33 Bolt 34 Bolt 35 Slot 36 Slot 37 Slot 38 Input spur gear 39 Intermediate spur gear 40 Output spur gear A1 first axis A2 second axis F1 first guide axis F2 second guide axis H lever axis R roller axis S adjusting axis T output axis V connecting axis α opening angle

Claims

1. Lid stay (3) for a piece of furniture: a housing (15), a force accumulator (20), which is arranged inside the housing (15), a coupling element (25) which is coupled to the force accumulator (20) and is driven by the latter so as to be movable about an output axis (T), and an actuating arm (14), which is arranged on the outside of the housing (15) and is coupled to the coupling element (25) in such a way that the actuating arm (14) is driven in rotation about an actuating axis (S), characterized in a transmission (18) which is arranged on the outside of the housing (15) and via which the actuating arm (14) is coupled to the coupling element (25) in such a way that an input angle of rotation of the coupling element (25) about the output axis (T) is converted into an output angle of rotation of the actuating arm (14) about the actuating axis (S) which deviates from the input angle of rotation.

2. Lid stay according (3) to claim 1, characterized in that the actuating axis (S) of the actuating arm (14) is arranged parallel, in particular coaxially to the output axis (T) of the coupling element (25).

3. Lid stay (3) according to claim 1 or 2, characterized in that the transmission (18) has a transmission input element which is coupled to the coupling element (25) in a rotationally fixed manner with respect to the output axis (T), and that the transmission (18) has a transmission output element which is coupled to the actuating arm (14) in a rotationally fixed manner with respect to the actuating axis (S).

4. Lid stay according (3) to claim 3, characterized in that the transmission input element is arranged rotatably about the output axis (T) of the coupling element (25).

5. Lid stay (3) according to claim 3 or 4, characterized in that the transmission (18) is a planetary gearing.

6. Lid stay according (3) to claim 5, characterized in that the transmission (18) comprises a sun gear (28), a planet carrier (29) with planet gears (30) rotatably mounted thereon and a ring gear (31).

7. Lid stay according (3) to claim 6, characterized in that one of the elements from the group consisting of sun gear (28), planet carrier (29) and ring gear (31) forms the transmission input element and that a further one of the elements from the group consisting of sun gear (28), planet carrier (29) and ring gear (31) forms the transmission output element.

8. Lid stay (3) according to claim 6 or 7, characterized in that the planet carrier (29) forms the transmission input element and that the ring gear (31) forms the transmission output element.

9. Lid stay (3) according to one of claims 6 to 8, characterized in that the actuating arm (14) has a transmission receiving section which forms the ring gear (31) of the transmission (18) or is connected to the ring gear (31), an actuating section () projecting radially from the transmission receiving section with respect to the adjusting axis (S), which actuating section is designed to be coupled to a lid (2) of a piece of furniture at an end remote from the transmission receiving section (32).

10. Lid stay according (3) to claim 9, characterized in that the transmission receiving section (32) of the actuating arm (14) is plate-shaped and that the ring gear (31) and the planet gears (30) are arranged on one side of the transmission receiving section in the direction of the actuating axis (S) of the actuating arm (14), and the planet carrier (29) is arranged on the side of the transmission receiving section (32) facing away from this.

11. Lid stay (3) according to one of claims 6 to 10, characterized in that the sun gear (28) is firmly connected to a bolt (33), which is fixed to the housing (15) of the lid stay (3) in a rotationally fixed manner.

12. Lid stay according (3) to claim 11, characterized in that the adjusting arm (14) with the transmission (15) is supported against the housing (15) and / or the force accumulator (20) exclusively via the coupling element (25) and the bolt (33).