MOUNTING SYSTEM FOR A CAMERA

Abstract

For professional filming, camera mounting systems are essential for optimal camera stabilization. However, the requirements for damping characteristics vary depending on the application and desired result. Often, either specially manufactured systems or multi-axis electronic stabilizers are required, which are particularly expensive in professional settings. The present invention therefore provides a cost-effective mounting system whose damping and decoupling behavior is individually adjustable and can be quickly adapted to different scenarios.

Description

[0001] The present invention relates to a mounting system for a camera for stabilizing its position and damping vibrations, comprising a mounting arm with two end pieces and two crossbeams, wherein the crossbeams are articulated to the end pieces to form a parallelogram and each crossbeam has several anchor points for attaching at least one elastic band.

[0002] Such a mounting system is disclosed in DE 27 29 154 A1. It is connected to the belt area of ​​a wearer and works with springs which are intended to compensate for movement of the wearer in order to stabilize a camera mounted on the mounting system.

[0003] General mounting systems are already known from US Patent 10,393,476 B2. This patent describes a system that can be mounted on a vest and minimizes the perceived weight of an object attached to the system for the wearer. This is achieved using a mountable parallelogram with anchor points for attaching elastic bands or springs. While the object thus held remains firmly in the wearer's hands, such a mounting system can also be useful for minimizing impact. However, complete decoupling of the attached object from the wearer, or complete decoupling or damping of any vibrations, is not provided.

[0004] A common problem, especially when using cameras, is that the movement of the user and slight changes in position are transmitted to the camera as vibrations, causing the recorded image to blur unless these transmissions are largely minimized. Ideally, with vibration-damped mounting systems, the object being held follows horizontal movements in that direction due to its initial inertia, while its vertical movement remains completely unaffected by the user's. The user can then hold the object hands-free at the far end of their arm, without the object's vertical position changing, even during impulsive vertical movements of the user, such as those caused by sprinting. There are also options for fully automated electronic damping of these vibrations.EP 3 873 705 B1 discloses a high-end camera mounting system that, with additional sensors, feedback-controlled electronics, and multiple rotational degrees of freedom, achieves image stabilization through vibration damping of the integrated control electronics. Even the smallest changes in position are automatically registered and corrected. However, such systems are often prone to maintenance issues and difficult to adjust in terms of their handling. Furthermore, these systems are expensive to purchase, and their operating time is essentially limited to battery life. Additionally, their complexity makes them heavy and therefore unwieldy, and their electronics limit their load-bearing capacity.

[0005] Against this background, the present invention aims to create a cost-effective mounting system that enables adjustable decoupling of an object from the support as well as adjustable damping behavior of occurring vibrations.

[0006] This is achieved by a mounting system according to the features of independent claim 1. Meaningful embodiments of such a device can be found in the subsequent dependent claims.

[0007] The invention provides a mounting system for a camera for stabilizing its position and damping vibrations, comprising a mounting arm with two end pieces and two crossbeams, wherein the crossbeams are articulated to the end pieces to form a parallelogram, and each crossbeam has several anchor points for attaching at least one elastic band. According to the invention, the mounting system is characterized in that guide rollers are arranged at at least two anchor points of the mounting arm, to which at least one elastic band is attached, wherein the guide rollers are rotatably mounted on mounting bolts on the mounting arm, and adjustable braking elements are associated with the mounting bolts.

[0008] The present invention, through its design, enables the guidance of a camera using a mounting system. This system generates adjustable friction via braking elements and combines this friction with an adjustable belt geometry to achieve individually adjustable vibration damping and load-bearing capacity across the parallelogram's stroke, thus optimizing camera guidance. Adjustable vibration damping is crucial for guiding the camera in a smooth, damped motion as needed, or even preventing camera tracking altogether. If the friction of the braking elements is set to a minimum and a sudden change in position occurs during filming, requiring the mounting system to adapt, there is sufficient leeway for the mounting system to easily follow the change.Since the friction in the system is initially set to a minimum, the mounting system behaves with insufficient damping. This leads to an overshoot of the system's new equilibrium position and a subsequent settling back to that position.

[0009] An extreme case of damping modality, adjustable via the braking elements, is an overdamped mounting system, in which the impulse of the height change is completely damped. Here, the braking elements are set so that the camera remains in its original equilibrium position even if the support structure changes height; that is, the vibrations are damped so strongly that the camera doesn't even swing to a new equilibrium position. As long as the height changes of the support structure remain within the system's range of motion, the camera remains in its original equilibrium position until the user manually repositions the camera to a new equilibrium position.

[0010] Another characteristic of the overdamped mounting system is that, due to the high friction, any position within its range of motion acts as an equilibrium position. The user only needs to position the camera once in the desired equilibrium position, and it will remain there. Outside the overdamped mounting system, the system always has exactly one equilibrium position, which results from the balance between the lifting force of the arm and the weight of the object being carried.

[0011] Between these two extremes, the braking elements can also be tightened so that the existing mounting system behaves as a critically damped mounting system. Here, too, the momentum of the permanent change in height is carried along, but the camera will rise slowly from an old equilibrium position to a new one. In this damping mode, the movement is slowed down to such an extent that the new equilibrium position is reached, but no oscillation can occur, thus making the camera more stable.

[0012] The braking elements of the present invention realize all possible configurations of vibration damping, including intermediate damping modalities, in a single cost-effective and individually adaptable mounting system.

[0013] In a first concrete embodiment, the braking elements can be designed as ring-shaped wedge-shaped discs with an inwardly tapered cross-section, positioned between the guide rollers and a terminal bolt head integrally formed on the mounting bolt. This ensures optimal control of the friction between the crossbeam and the guide roller, allowing the damping to be changed simply by adjusting between the damping modes described above, without requiring a new system.

[0014] Advantageously, the guide rollers can be equipped with a plain bearing, preferably in the form of a polytetrafluoroethylene coating, and / or a needle bearing and / or a ball bearing and / or a rolling bearing. Due to these features, the friction between the guide rollers and the mounting bolts, or between the guide rollers and the elastic bands rubbing against them, can be minimized as much as possible in the case of underdamped vibration. Minimal friction is necessary in this case to provide the mounting system with the lowest possible damping force.

[0015] Furthermore, it appears advantageous if the crossbeams and / or guide rollers are made of aluminum or ABS plastic. This creates a lightweight, stable, and durable construction that can be manufactured cost-effectively, and with regard to the guide rollers, their coefficient of friction varies depending on the material chosen.

[0016] In another embodiment, at least one guide roller can be mounted immobile. This eliminates unnecessary degrees of freedom in the mounting system, allowing the user to switch more quickly between different damping modes or adjust their individual camera movement more easily, as each guide roller does not need to be adjusted individually. However, mounting systems can still be implemented in which each guide roller is individually adjustable. This gives the user the ability to make a wide variety of adjustments to the mounting arm.

[0017] Preferably, several support arms can be connected to each other via their end pieces. This creates additional flexibility and provides a greater number of possible combinations, allowing for a variety of intermediate levels of the aforementioned damping modalities without requiring a completely new system. However, several connected support arms must be individually calibrated to each other.

[0018] In a preferred embodiment, a knee joint projecting from the crossbeam can be attached at two anchor points. The knee joint comprises a first joint foot and a second joint foot connected to the first joint foot via a hinge. A guide roller is associated with the knee joint, to which at least one elastic band is attached. This allows the damping modalities to be further customized, as such a knee joint can cause greater elongation of the elastic band, which in turn affects the spring characteristics. If a camera mounted on the support system is fitted with a different lens or a different camera is used, the mass that the support system must dampen changes.If the mass is only slightly higher than a previous setting, but not so much higher as to require a second elastic band, then the use of such a knee joint is extremely advantageous. By attaching the knee joint to different anchor points on the crossbeams, it can form a variable angle, allowing the tension of the elastic band attached to the guide rollers to be adjusted incrementally. The band can also be mounted on the guide rollers in different configurations to further easily vary the tension. This allows the mounting system to be individually adapted to a wide variety of situations.

[0019] Preferably, the guide roller can be rotatably mounted on a mounting bolt at at least one anchor point of the knee joint. Here, too, the friction can be individually controlled by means of a braking element in order to switch between the different damping modes without having to remove any elements.

[0020] Furthermore, it appears advantageous if at least one anchor point is attached to the joint hinge. This means that when the crossbeams are twisted against the end pieces, the position of the guide roller changes more slowly than the position of other guide rollers on the crossbeams, and the angles enclosed by the elastic bands used adjust accordingly. Consequently, the stretch of the elastic band changes over the arm's range of motion. The knee joint presses more strongly into the band at top dead center and moves out of the way at bottom dead center. This counteracts the low tension at top dead center and high tension at bottom dead center inherent in diagonal bracing. Thus, a variable damping characteristic is achieved, resulting from the combination of the adaptability of the band's stretch curve over the arm's range of motion and the adjustable friction.

[0021] In a specific embodiment, at least one of the end pieces of the support arm may be provided with an anchor point for attaching the first or second joint foot of the hinge. This allows for more uses of the knee joint, as the additional anchor point results in a greater variation of angles between the knee joint and the crossbeam. Similar to the possibility described above, such a modification leads to even more adjustable positions.

[0022] In a further embodiment, it seems advantageous for the fastening bolts on the front of the support arm to interact with additional fastening bolts attached to the rear of the support arm. This allows elastic bands to be attached to both sides of the support arm, the friction of which can be varied but always remains the same on both sides.

[0023] Advantageously, the mounting bolts can be used with additional fasteners to form a detachable connection at an anchor point on the support arm. This allows the guide rollers to be removed and replaced as needed, or attached to other locations on the support arm to optimally adapt to the respective environments.

[0024] Preferably, the fastening bolts can interact with the threads of a blind hole, and the fastening bolts can be bonded within the blind hole. If some guide rollers are to be permanently mounted, such a fastening method represents a cost-effective and efficient solution. This fastening can be achieved using an adhesive, in particular a special thread-locking adhesive, or a similar agent applied to the threads of the screw.

[0025] The invention described above will be explained in more detail below using an exemplary embodiment.

[0026] They show Fig. 1 a perspective view of the mounting system in which two mounting arms with a total of four guide rollers per mounting arm are connected to each other, Fig. 2 and Fig. 3 a perspective view of the mounting system with a total of eight guide rollers for two covering variations, Fig. 4 and Fig. 5 a perspective view of the mounting system with a total of six guide rollers and a riser element for two covering variations, Fig. 6 a perspective view of the mounting system with a mounting arm with a total of six guide rollers, one of which is attached to a knee joint, Fig. 7 a schematic representation of a guide roller in an oblique view in the fixed state without the mounting system, as well as Fig. 8 A schematic exploded view of the guide roller in an oblique view with the fastening elements and braking means.

[0027] Fig. Figure 1 schematically shows a mounting system in which two mounting arms 1, each with two end pieces 2, are provided. The mounting arms 1 are connected to each other via their end pieces 2. A connecting element 22 is provided between the two mounting arms 1 of the mounting system. This connecting element also connects a support connector 23, which can be attached to a user's carrying vest (not shown), to one of the mounting arms 1. The connecting elements 22 are screwed together so that the mounting arms 1 are pivotally movable at this point, granting the user maximum freedom of movement. Each mounting arm 1 has four guide rollers 7, with two guide rollers 7 mounted on a front 16 and two guide rollers 7 on a rear 17 of the mounting arm 1. The guide rollers 7 are mounted diagonally opposite each other on the end pieces 2 of the mounting arm 1.However, they can also be attached to any anchor points 5 of the trusses 3, so that elastic bands 6 stretched over the guide rollers 7 exert a lower spring force. Each of these elastic bands 6 is stretched over the guide rollers 7, so that a parallelogram 4, assembled from two trusses 3 and two end pieces 2, can spring back when a weight is attached. The end pieces 2 can also be shaped differently, allowing a pin to be inserted through them, to which a camera is attached. An additional support point is provided here. Two support arms mounted one behind the other allow the user additional degrees of freedom in camera movement and simultaneously enable simple panning movements in a horizontal plane.

[0028] The Fig. 2 and Fig. Figure 3 shows schematic representations of the support system in an oblique view with a total of eight guide rollers 7, all of which are mounted on anchor points 5 located on the crossbeams 3 of the support arm 1. Fig. Figure 2 shows that the elastic band 6 passes through each guide roller 7 only once, whereas the elastic band 6 in Fig. 3 is positioned such that the elastic band 6 is guided twice through the central guide rollers 7 on both the outward and return journeys. This variable positioning allows for increased tensile tension, further optimizing the damping properties of the mounting system.

[0029] The Fig. 4 and Fig. Figure 5 shows schematic representations of the mounting system with a total of six guide rollers 7 and a riser element 21 in an oblique view for two possible embodiments in which the elastic band 6 can be stretched over the mounting arm 1. Fig. 4 The elastic band 6 is stretched around the guide rollers 7 attached to the end pieces 2 and passes through the guide roller 7 attached to the extension element 21 once. Fig. Figure 5 shows an embodiment in which the elastic band 6 passes over the guide roller 7 on the extension element 21 twice, thereby bridging a greater distance and thus causing greater elongation of the elastic band 6. This arrangement slightly alters the damping properties of the system. Additionally, the elastic band 6 is more dependent on the guide roller 7 of the extension element 21 and its position along the crossbeams 3. In this embodiment, both end pieces 2 of the support arm 1 are constructed identically.

[0030] Fig. Figure 6 shows a schematic diagram of the mounting system with a total of six guide rollers 7 in an oblique view. Two guide rollers 7 are attached to a knee joint 12 located outside the support arm 1. An end piece 2 is slightly modified and has an anchor point 5 at a raised point, to which a first joint foot 13 of the knee joint 12 is mounted. A second joint foot 15 of the knee joint 12 is mounted centrally at an anchor point 5 of the crossbeam 3, but can be attached to any other anchor point 5 along the crossbeam 3. The first joint foot 13 and the second joint foot 15 are designed here to be approximately the same length. However, they can also be of different lengths and be straight or curved. The knee joint 12 has a hinge 14 between the first joint foot 13 and the second joint foot 15, through the center of which an anchor point 5 located outside the crossbeam 3 passes.In this embodiment, the knee joint 12 has a single external anchor point 5 for attaching a guide roller 7. However, the knee joint 12 can also be designed to have several such anchor points 5. A guide roller 7 is attached to the anchor point 5 of the knee joint 12 shown here, on both a front 16 and a rear 17 of the knee joint 12. The support arm 1 shown here is depicted without the elastic bands 6 for illustrative purposes. Such a knee joint 12 can be mounted at different anchor points 5 of the support arm 1, thereby forming different angles. This allows the path of an elastic band 6 (not shown here), stretched around the three guide rollers 7, to be varied, thus enabling adjustment of the spring force of the support arm 1.At the same time, the angle of the knee joint 12 changes during an inclination of the parallelogram 4, in which the angle between the end pieces 2 and the crossbeams 3 changes.

[0031] The depictions of Fig. 2 and Fig. 3 could be equipped with such a knee joint 12 or with a heightening element 21, as in the Fig. 4 and Fig. The design shown in Figure 5 can be extended as desired. Multiple elastic bands 6 could also be attached around the guide rollers 7, rather than one elastic band 6 per side, as shown in the illustrations. Furthermore, all anchor points 5 of the crossbeams 3 are shown identically and equidistantly in the illustrations. However, different bearings can also be assigned to them to allow for increased variation in friction, which the user can adjust as desired. The anchor points 5 can also be positioned at different distances from each other.

[0032] Fig. Figure 7 shows a schematic representation of a guide roller 7 in the mounted state, but without the mounting system, in an oblique view. In this embodiment, the guide roller 7 is a one-piece, round mounting disc 18, which is attached to a brake disc 9 by means of mounting bolts 8 on an axle 19 from both sides and can be firmly mounted to it. Two such mounting discs 18 attached to the same axle 19 form a guide roller 7, which can be attached to the anchor points 5 of the support arm 1. The guide roller 7 thus represents a simple, functional and cost-effective element that can be manufactured with simple means and is easy to disassemble.

[0033] Fig.Figure 8 shows a schematic exploded view of part of the guide roller 7 in an oblique view. In this view, the fastening bolt 8 with bolt head 11 is a screw 20 that engages with an internal thread of the axle 19 and secures the guide roller 7. A braking element 9 in the form of a wedge-shaped washer 10 is arranged between the screw 20 and the guide roller 7. The friction can be controlled and varied by the torque applied to the screw 20. Varying the friction causes a controllable change in the position of the elastic bands attached to the guide rollers during their extension. This allows the damping characteristics of the mounting system to be influenced. Alternatively, anchor points 5 can be used that have no play and are thus connected to the rest of the mounting arm 1 by static friction.

[0034] The above description thus describes a cost-effective mounting system that allows for adjustable decoupling of an object from the support as well as adjustable damping behavior of occurring vibrations. REFERENCE MARK LIST 1 support arm 2 End piece 3 traverses 4 Parallelogram 5 Anchor point 6 elastic bands 7 Leadership role 8 fastening bolts 9 Brake element 10 wedge disc 11 bolt head 12 Knee joint 13 first jointed foot 14 Joint hinge 15 second jointed foot 16 Front 17 reverse 18 Mounting washer 19-axis 20 screws 21 Increase element 22 Connecting element 23 support connectors

Claims

[1] Mounting system for a camera for stabilizing its position and damping vibrations, comprising a support arm (1) with two end pieces (2) and two crossbeams (3), wherein the crossbeams (3) are articulated to the end pieces (2) to form a parallelogram (4) and each crossbeam (3) has several anchor points (5) for attaching at least one elastic band (6), characterized by , that at least two anchor points (5) of the support arm (1) guide rollers (7) are arranged, to which at least one elastic band (6) is attached, wherein the guide rollers (7) are rotatably mounted on fastening bolts (8) on the support arm (1) and are assigned to the fastening bolts (8) as adjustable brake elements (9). [2] Mounting system according to claim 1, characterized by, that the brake elements (9) are ring-shaped wedge discs (10) with an inwardly tapered cross-section, which are placed between the guide rollers (7) and a terminal bolt head (11) formed on the fastening bolt (8). [3] Mounting system according to one of the preceding claims, characterized by , that the anchor points (5) are assigned a sliding bearing, preferably in the form of a polytetrafluoroethylene coating, and / or a needle bearing and / or a ball bearing and / or a rolling bearing. [4] Mounting system according to one of the preceding claims, characterized by that the crossbeams (3) and / or the guide rollers (7) are made of aluminium or ABS plastic. [5] Mounting system according to one of the preceding claims, characterized by , that at least one guide roller (7) is mounted immovably. [6] Mounting system according to one of the preceding claims, characterized bythat several retaining arms (1) are connected to each other via their end pieces (2). [7] Mounting system according to one of the preceding claims, characterized by , that a knee joint (12) projecting from the traverse (3) is attached at two anchor points (5), wherein the knee joint (12) comprises a first joint foot (13) and a second joint foot (15) connected to the first joint foot (13) via a joint hinge (14), wherein a guide roller (7) is associated with the knee joint (12), to which at least one elastic band (6) is attached. [8] Mounting system according to claim 7, characterized by , that the guide roller (7) is rotatably mounted on a fastening bolt (8) at the at least one anchor point (5) of the knee joint. [9] Mounting system according to one of claims 7 or 8, characterized by , that at least one anchor point (5) is attached to the hinge (14). [10] Mounting system according to any one of claims 7 to 9, characterized by , that at least one of the end pieces (2) of the retaining arm (1) is assigned an anchor point (5) for attaching the first or second joint foot (13),(15) of the joint hinge (14). [11] Mounting system according to one of the preceding claims, characterized by , that the fastening bolts (8) from a front (16) of the retaining arm (1) interact with further fastening bolts (8) attached to a rear (17) of the retaining arm (1). [12] Mounting system according to any one of the preceding claims, characterized by , that the fastening bolts (8) form a detachable connection with other retaining means at an anchor point (5) of the retaining arm (1). [13] Mounting system according to one of the preceding claims, characterized by , that the fastening bolts (8) interact with a thread of a blind hole, wherein the fastening bolts (8) are glued in the blind hole.

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