EP1348091A1

EP1348091A1 - Balanced camera tripod head

Info

Publication number: EP1348091A1
Application number: EP02709995A
Authority: EP
Inventors: Erwin Tillschneider
Original assignee: Sachtler GmbH and Co KG
Current assignee: Sachtler GmbH and Co KG
Priority date: 2001-01-05
Filing date: 2002-01-04
Publication date: 2003-10-01
Also published as: JP2004520550A; US20040206863A1; CN1484744A; WO2002053965A1

Abstract

The invention relates to an balanced camera tripod head that comprises: a base element (4); a tiltable arrangement (2) that is linked with the base element (4) so as to be rotatable about a tilt axis (N) and that can be rigidly linked with a camera system; and a device for compensating for a tilt moment that occurs when the head is tilted which comprises at least one spiral spring (3) that rests with its one end on the base element (4). The device for compensating for the tilt moment comprises a follower device (5) that is mounted on the tiltable arrangement (2) at a distance to the tilt axis (N) and that deflects the spiral spring (3) when the camera system is tilted. Said spiral spring (3) exerts a substantially sinusoidal restoring moment on the tiltable arrangement and thus on the camera system.

Description

Camera tripod head with weight balance

Technical field

The present invention relates to a camera tripod head according to the preamble of claim 1 and claim 7.

Cameras that cannot be held by hand - for example due to their weight or size or due to special requirements for quiet camera operation - rest on a camera tripod or a camera pedal. The camera is mounted on a camera tripod head so that it can be rotated around a horizontal axis (tilt axis) and a vertical axis (swivel axis) so that the camera operator can follow moving objects with the camera lens. (In the following only the term "camera tripod" is used; however, the explanations also apply to camera pedals.) When tilting the camera, i.e. When turning the camera tripod head around its tilt axis, the distance of the center of gravity of the camera from this tilt axis (center of gravity height) together with the weight of the camera causes a torque around the tilt axis that is dependent on the tilt angle.

By compensating for this tilting moment, the device for weight compensation should enable the camera to be tilted without force. It is necessary that the weight balance due to the rapid change of the Load torque when attaching different cameras or camera accessories such as teleprompters etc. can be quickly and easily adapted to different weights and different center of gravity.

In addition, the weight compensation should hold the camera in any tilt position directly and immediately without any subsequent movement, within a tilt range of at least ± 90 °, in order to be able to cover the entire spatial field of view when tilting the camera.

In order to enable smooth tilting movements, the camera tripod head should also have a friction-free damping device that is independent of the weight balance and also adjustable, if possible.

State of the art

Known camera tripod heads have, for damping the tilting movement, for example, a hydraulic damping member with adjustable rotational resistance, as described in German Patent 24 57 267. German patent P 26 57 692 also describes a damping device for camera tripod heads.

With regard to weight compensation, it is known, for example, to compensate for the tilting moment with a plurality of rubber disk torsion springs arranged one behind the other on the tilt axis (DE 30 26 379). The weight balance can be adjusted here by switching individual springs on or off. It is also known to compensate for the tilting moment by means of compression or tension springs connected in series.

From DE 39 08 682 AI a device for balancing the weight of an object to be pivoted about a pitch axis is known. A restoring torque works with the help a spiral spring arrangement via a lever arm on the pitch axis. In order to enlarge the pitch range and to achieve ideal torque compensation at all pitch angles, the compensating device has a reduction gear, the axis of the input shaft being the pitch axis and the spiral spring arrangement acting on the output shaft via a lever arm.

Presentation of the invention

The present invention has for its object to provide a camera tripod head with a device for compensating for a weight moment occurring during this tilting movement, which compensates for the tilting moment as precisely as possible and yet can be made compact.

This object is achieved by a camera tripod head with the features of claim 1 and by a camera tripod head with the features of claim 7.

According to claim 1, the device for compensating for the tilting moment has a driver arrangement which is attached to a tiltable arrangement at a point spaced from the tilting axis and which deflects the spiral spring in the tilting direction when the camera structure is tilted. The spiral spring exerts an essentially sinusoidal restoring moment on the inclinable arrangement and thus on the camera structure via the driver arrangement. In contrast, at least one spiral spring is deflected by the driver arrangement against the direction of inclination.

The distance between the tilt axis and the point of engagement of the driver arrangement on the spiral spring forms a lever arm which is effective for the restoring moment, so that the spiral spring exerts a restoring moment on the camera structure. The The restoring force of the spiral spring depends on the angle of inclination of the camera, and the restoring torque generated is sinusoidal.

This has the advantage that the course of the

Compensation torque corresponds to the course of the tilting moment when tilting the camera in the entire tilting range of at least + 90 °, so that the camera can be tilted with just as little force at large tilting angles as with small tilting angles and also at large tilting angles in any desired position without any subsequent movement. At the same time, the spiral spring can be made compact and integrated into the camera tripod head.

Advantageous embodiments of the camera tripod head according to claim 1 result from the associated subclaims.

The driver arrangement is preferably rotatably attached to the inclinable arrangement, the corresponding axis of rotation being parallel to the axis of inclination. This relative rotation means that the tilting movement of the camera is not completely transferred to the spiral springs. For example, with an inclination angle of the camera and thus also the inclinable arrangement of 90 °, an angle is formed between the driver arrangement and the inclinable arrangement, which causes the deflection of the spiral springs to be far less than 90 °. In this way, the inclination range of ± 90 °, which is particularly desirable for camera structures, can be guaranteed without the bending springs being stressed beyond their maximum permissible material stresses.

For this purpose, it is particularly advantageous if the driver arrangement moves relative to the spiral spring when the camera is tilted. In an advantageous, stable embodiment, the tiltable arrangement has at least one tilt leg, which is preferably connected at one end to a carrier plate on which the camera structure can be mounted. A particularly stable configuration is achieved by using at least two tilt legs arranged parallel to one another.

One way of designing the spiral spring is to provide a spiral spring plate. The characteristic curve of the sinusoidal restoring torque can be optimized by suitable selection of the geometrical shape of the spiral spring plate (rectangle, triangle, trapezoid, etc.). Also through recesses, e.g. The behavior of the flexible spring plate can be suitably influenced by punching out material. The deflection of the spiral spring plate is expediently perpendicular to its surface plane.

However, the use of other spiral spring shapes such as e.g. Spring bars that can be cylindrical, conical, hollow, etc.

In an advantageous embodiment, the driver arrangement consists of at least one carrier element which is rotatably connected to the tilt leg, and a driver which deflects the spiral spring. Two or more drivers can also be provided, which then preferably extend parallel to the tilt axis. A driver is then arranged, for example, in the direction of inclination in front of the spiral spring and a second behind the spiral spring, so that one or the other driver deflects the spiral spring depending on the direction of inclination. These drivers can be designed, for example, as rods.

In order to keep the friction losses as low as possible during the transfer of the inclination movement from the driver arrangement to the spiral springs, it is advantageous to provide friction-reducing elements on the driver arrangement, for example in the form of rollers or ball bearings. The lower the friction between the spiral spring and the driving axles, the less the "tear-free effect" that occurs at the beginning of an inclination movement.

In a further embodiment of the camera tripod head according to the invention, a plurality of spiral springs are provided, and a driver is arranged between two spiral springs. Driver and spiral spring are therefore arranged alternately with each other.

A particularly compact embodiment of the camera head according to the invention can be achieved by using a spring assembly instead of a single spiral spring. In the case of several spiral spring assemblies, flexible spring assemblies and drivers are then arranged alternately with one another perpendicular to the inclination axis. The individual springs of the spiral spring assemblies are then designed to be relatively thin, as a result of which they can be deflected relatively far with the same length until their maximum permissible material tension is reached. The thinner a spiral spring is, the shorter it can therefore be chosen to ensure a desired maximum deflection. In order to still achieve a satisfactory restoring force, these thin, short springs are combined into packages in which they can move relative to one another. The restoring forces of the short, thin springs in the package then add up to a total restoring force of the package, the short overall length being retained. However, with the number of springs in the package, the number of contact surfaces and thus the loss of friction also increases. A lubricant is therefore preferably provided between the spring plates in the package. The reduction in friction also reduces the "tear-free effect" and the hysteresis that occurs when the springs are deformed. The use of spring assemblies also has the advantage that breaking a single spring does not have the same impact as when using single springs.

To adjust the weight compensation device to different camera weights and center of gravity, an adjusting device is preferably provided in order to change the effective spring length of the spiral spring so that it is not deformed elastically over its entire length during bending, but only in a partial area. A dynamic influence on the effective spring length is also conceivable, as a result of which the spring characteristic can be adapted to special requirements. The spring length is used in the power of three in the restoring moment.

The spring stiffness of the spiral spring of the camera tripod head according to the invention is accordingly adapted to the weight of the camera that is currently on the camera tripod head and then has a profile that corresponds exactly to the profile of the weight moment of the camera when tilting around the tilt axis: If the center of gravity of the camera is located exactly vertically above the tilt axis, no torque is generated by the spring. When the camera is tilted out of the rest position, the tilting moment generated by the camera weight increases sinusoidally with increasing tilt angle, and at the same time the compensation moment generated by the spiral spring also increases sinusoidally. At every tilt angle, the tilt moment is compensated by an exactly the same counter torque, so that the camera is kept in balance in every tilt position. The cameraman then only needs slight forces to tilt the camera, and the camera stops at any angle.

In an advantageous embodiment of the camera tripod head according to the invention, the spring stiffness of the spiral spring is infinitely adjustable. So the spring stiffness can be exactly on cameras of any weight and any Center of gravity can be adjusted, whereby common cameras including accessories can have a weight of up to 150 kg and a center of gravity of up to 50 cm. In teleprompters and other camera accessories, which can also be mounted on the camera tripod head according to the invention, there may be deviating weight and lever ratios; the weight moment resulting from such structures can also be compensated for by the weight compensation device according to the invention.

In addition, the distance between the tilt axis and the connection point of the tiltable arrangement and driver arrangement, i.e. the lever arm effective for the restoring moment can be made adjustable. The sinusoidal characteristic of the restoring torque can be optimized by shortening or lengthening this lever arm. However, it is equally possible to set the lever arm appropriately and not to make it changeable.

In order to make the best possible use of the spring material, it makes sense to stress the spiral spring with its permissible material tension at an angle of 90 ° for the camera.

For example, carbon fibers, steel or glass fibers or combinations of these or other materials can be used as the material for the spiral spring. The spiral springs can also be designed in a sandwich construction.

In addition, it is advantageous to arrange the spiral spring relative to the base element and driver arrangement in such a way that a slight pretensioning force acts on the spiral spring at an inclination angle of 0 °. A game is thus avoided in the rest position of 0 °. As stated above, the camera tripod head according to the invention also has a device for damping the inclination movement in a further advantageous embodiment.

Finally, the spiral spring can be designed both as a hollow body and as a solid body or can represent a combination of at least one hollow body and at least one solid body. In the case of several spiral springs or spiral spring assemblies, both hollow and solid bodies can be provided at the same time. In addition, the spiral spring can have any suitable geometric shape, that is to say, for example, it can also be cylindrical.

Advantageous embodiments of the camera tripod head according to claim 7 also result from the associated subclaims.

In particular, two spiral springs can be provided, which are arranged at an inclination angle of 0 ° with respect to a plane running vertically through the inclination axis in mirror image to one another at the same angle. In the case of positive angles of inclination, with a suitable geometric arrangement of the bending springs, one of the bending springs is deflected more strongly against the direction of inclination and the other less so in the direction of inclination. With negative angles of inclination, the situation is reversed.

However, it is also conceivable to provide only a single spiral spring which is firmly clamped at one end. The driver arrangement is then mounted on the spiral spring in such a way that it can move along the spiral spring in the longitudinal direction of the spiral spring and thereby deflect the spiral spring both at positive and at negative inclination angles of the camera. In addition, the driver arrangement can have a carrier rod which is fixedly connected to the inclinable arrangement. When the camera is tilted, the support rod moves relative to the at least one spiral spring. It is therefore advantageous to design the support rod in such a way that as little friction as possible occurs between the support rod and the spiral spring. For this purpose, the support rod can have a circular cross-section and a surface that is as smooth as possible.

The carrier rod can alternatively be rotatable about its longitudinal axis with respect to the inclinable arrangement, which creates an additional degree of freedom between the driver arrangement and the at least one spiral spring.

In addition to the support rod, a sleeve which can be rotated around this support rod and which rolls on the at least one spiral spring when the camera structure is tilted can be provided. In this case, the support rod also has a circular cross section. The rolling sleeve facilitates the relative movement between the support rod and the spiral spring.

In the case of a single spiral spring, the sleeve or the rotatable support rod is then preferably guided along the spiral spring in the longitudinal direction of the spiral spring. The driver arrangement is then movable along the spiral spring and can also be pivoted with respect to the spiral spring via the sleeve or the rotatable support rod. At the same time, the driver arrangement is guided along the spiral spring via the sleeve or the rotatable rod in such a way that it deflects the camera at both positive and negative angles of inclination.

Brief description of the drawings

Exemplary embodiments of the invention are described in more detail below with reference to the accompanying drawings. In detail shows:

1 is a schematic view of the forces and moments acting in a first to third embodiment,

2 shows a perspective view of a first embodiment of a camera tripod head according to the invention,

3 shows a front view of a second embodiment of a camera tripod head according to the invention,

4 shows a section along the line A-A from FIG. 3,

5 shows a section through the first embodiment of the camera tripod head according to the invention in the deflected state,

6 shows a third embodiment of the camera tripod head according to the invention with a damping device,

7 is a side view of a fourth embodiment of the camera tripod head according to the invention in two different positions, and

Fig. 8 is a perspective view of the fourth

Embodiment in these two positions.

Detailed description of preferred embodiments of the invention

Fig. 1 illustrates the principle of the first to third embodiment of the present invention and shows schematically a camera structure 1, which is attached to a tiltable arrangement 2, which in turn is rotatable by one Tilt axis N (perpendicular to the plane of the drawing) is mounted on a base element 4, the connection between the base element 4 and the tiltable arrangement 2 not being shown for reasons of clarity. A spiral spring 3 is supported in the base element 4.

A driver arrangement 5 is rotatably mounted on the inclinable arrangement 2, and the spiral spring 3 is connected to the inclinable arrangement 2 via this driver arrangement 5. A sliding movement between driver arrangement 5 and spiral spring 3 is possible.

Fig. 1 also illustrates the forces and moments in the system. The camera structure 1 is deflected from its equilibrium position, in which its center of gravity S is located exactly vertically above the tilt axis N running perpendicular to the plane of the drawing, by the tilt angle β. Due to the center of gravity h of the center of gravity of the camera from the tilt axis N, the effective lever arm h sin ß together with the weight G of the camera causes a tilt moment M around the tilt axis N. With increasing angle ß, the tilt moment MN = G h sin ß increases sinusoidally.

The lever arm a, which corresponds to the distance of the tilt axis N from the point of contact between the driver arrangement 5 and the tiltable arrangement 2, contributes to the restoring torque Mr generated by the spiral spring 3. The spring force FF of the spiral spring 3 is dependent on the sine of the angle of inclination β, so that there is a restoring torque which, like the tilting moment MN, is sinusoidal. Through a corresponding choice of the spring constant and the lever arm a, a restoring torque Mr results, which compensates for the tilting moment MN. By adjusting the effective spring length L, the restoring torque can also be adapted precisely to a given camera weight G and a center of gravity h, so that it exactly compensates for the tilting moment MN that occurs when the camera is tilted.

2 shows a first preferred embodiment of the camera tripod head according to the invention. The base element 4 here consists of a base plate 10 and two base arms 11. Two tilt legs 2 'are attached to the two base arms so as to be rotatable about a tilt axis N and carry a support element 12 on which various camera structures (not shown), teleprompters, headlights or the like. can be attached.

To compensate for the tilting moment occurring when the support element 12 is inclined and a camera structure mounted thereon around the tilt axis N, an arrangement of spiral spring plates 3, which cooperates with a driver arrangement 5, is used. The bending spring plates 3 are braced at their lower end via an adjusting device with the base element 4. The adjusting device includes a sliding element 8, which can be displaced vertically relative to the base element 4 by means of an adjusting screw 9, as a result of which the point of engagement of the driver arrangement 5 on the spiral spring plates 3 is shifted, so that the effective spring length of the spiral spring plates 3 changes. Two guide grooves 15 are used to guide the sliding element 8 of the adjusting device vertically relative to the base element 4.

At their upper end, the spiral spring plates 3 are connected to drivers 7 of the driver arrangement 5. These drivers 7 are connected to the tilt legs 2 'via two support elements 6, the support elements 6 being able to rotate relative to the tilt legs 2' about an axis Z which is parallel to the tilt axis N. The distance between the tilt axis N and the axis Z corresponds to the above-mentioned lever arm a, which is not adjustable in the present embodiment. If the tilt legs 2 'and thus also the camera structure are inclined around the tilt axis N, this movement is transmitted from the tilt legs 2' via the carrier elements 6 and the drivers 7 to the

Bending spring plates 3. In order to keep the friction between the drivers 7 and the bending spring plates 3 as low as possible, the drivers 7 are surrounded by rollers 13, which roll on the bending spring plates 3 when there is a relative movement between the drivers 7 and the bending spring plates 3.

The tilting movement of the camera structure is not completely transmitted to the spiral spring plates 3, since the carrier elements 6 can rotate relative to the tilting legs 2 '. Due to this relative rotation between support elements 6 and tilt legs 2 ', the restoring forces of the spiral spring plates 3 always act perpendicularly on the drivers 7, thereby preventing the system from jamming.

Fig. 3 is a front view of a second embodiment of a camera tripod head according to the invention. In contrast to the camera tripod head shown in FIG. 2, this second embodiment uses spring assemblies 3 'made of spiral spring plates instead of individual spiral spring plates 3, which, however, is not yet apparent from FIG. 3. Otherwise, the second embodiment corresponds to the first, and in FIG. 3 it can be seen even more clearly how the spiral spring assemblies 3 'are connected to the base element 4 via the sliding element 8 and the adjusting screw 9 of the adjusting device. The spiral spring assemblies 3 'are clamped in the sliding element by means of screws 14. In addition, the structure of the driver arrangement 5, consisting of carrier elements 6, drivers 7 and rollers 13 arranged around them, can be seen.

The sectional spring packages 3 'used in the second embodiment can now be seen in the sectional view in FIG. 4. The As described above, the use of spiral spring assemblies 3 'instead of individual spiral springs 3 offers the advantage that the spiral springs can be made shorter and still exert the desired restoring force.

FIG. 4 also shows that the spiral spring assemblies 3 'contact the three rollers 13 in the rest position shown, so that play is avoided in the rest position. Preferably, the middle one of the rollers 13 even exerts a slight pretension on the spiral spring assemblies 3 'in the rest position.

FIG. 5 shows a section through the first embodiment of the invention shown in FIG. 2, in which four individual spiral spring plates 3 are provided, each of which is arranged between two drivers 7. 5, the tiltable arrangement 2 with the tilt legs 2 'is inclined around the tilt axis N, and it becomes clear in which way the carrier element 6 of the driver arrangement rotates with respect to the tilt legs 2' during this tilting movement. This relative rotation has the effect that the spiral spring plates 3 do not completely follow the inclination of the tilt legs 2 'and are therefore not subjected to greater stress than is permissible.

FIG. 6 shows a third embodiment of the camera tripod head according to the invention, which is equipped with a device for damping the tilting movement. On a shaft 16, the axis of which coincides with the inclination axis N of the system, first annular disks 17 are provided, which in this embodiment are formed integrally with the shaft 16. A second ring disk 18 is arranged between two first ring disks 17, the second ring disks 18 being integrally formed with a damping housing 19 in this embodiment. A damping medium is located between the first ring disks 17 and the second ring disks 18. -— ■ v _\ J _ »

16

Alternatively, the second ring disks 18 can engage on their outer circumference with a coupling element (not shown). This coupling element makes it possible to lock any number of the second ring disks 18 in a manner fixed to the housing, i.e. lock against twisting. The relative movement of the ring disks 17 creates a hydraulic damping force, the degree of damping of the device being able to be set via the number of ring disks which are locked in place with the housing.

7 and 8 show a fourth embodiment of the present invention. Instead of the carrier element 6 rotatably connected to the tiltable arrangement 2, the driver arrangement 105 here has a carrier rod 106 with a circular cross section, which is firmly connected to the tiltable arrangement 102. A sleeve 107 is provided so as to be rotatable around the support rod 106.

In the fourth embodiment according to FIGS. 7 and 8, two spiral springs 103 are provided, each of which is firmly clamped to the base element 104 at one end and rest on the rotatable sleeve 107 of the driver device 105 at the other end. The two spiral springs 103 are arranged at an inclination angle of 0 ° (shown in solid lines in FIGS. 7 and 8) with respect to a plane running vertically through the inclination axis N in mirror image with respect to one another at the same angle. When the camera structure is deflected (shown in dashed lines in FIGS. 7 and 8), the driver device 105 rolls over the sleeve 107 on the spiral springs 103 and deflects a spiral spring 103 (the one shown in the drawing on the left) more strongly against the direction of inclination others (shown on the right in the drawing) are less inclined.

Of course, the spiral springs 103 can also be replaced by spiral spring packages in this embodiment. A fifth embodiment of the weight compensation according to the invention, which is not shown in the drawings, finally has only a single spiral spring or a single spiral spring package. The arrangement of the fifth embodiment basically corresponds to the arrangement shown in FIG. 7, with the difference that the second spiral spring shown on the right in FIG. 7 is dispensed with. So that the spiral spring nonetheless exerts a restoring moment on the camera structure both at positive and at negative inclination angles of the camera, it is necessary in this case to provide a guide between the driver arrangement and the individual spiral spring. According to the fifth embodiment, this guide is realized on the sleeve, which in turn is rotatably provided around the support rod. The spiral spring is guided with respect to the sleeve so that the sleeve can move along the spiral spring in the longitudinal direction of the spiral spring. Since the sleeve is also rotatably mounted with respect to the carrier rod, the driver arrangement can move relative to the individual spiral spring without problems and deflect it at both positive and negative inclination angles of the camera without the system jamming.

Claims

claims

1. Camera tripod head with: a base element (4), a tiltable arrangement (2), on the one hand by a

Tilt axis (N) rotatably connected to the base element (4) and on the other hand can be fixedly connected to a camera structure, and a device for compensating one at the

Tilting movement occurring tilting moment, which has at least one spiral spring (3), which is supported at one end against the base element (4),

characterized in that

the device for compensating for the tilting moment has a driver arrangement (5), which is attached to the tiltable arrangement (2) at a location spaced from the tilting axis (N) and which deflects the spiral spring (3) in the tilting direction when the camera assembly is tilted, and that Bending spring (3) exerts an essentially sinusoidal restoring moment on the inclinable arrangement (2) and thus on the camera structure via the driver arrangement (5).

2. Camera tripod head according to claim 1, characterized in that the driver arrangement (5) is mounted rotatably about an axis (Z) on the tiltable arrangement (2), which axis extends essentially parallel to the tilt axis (N).

3. Camera tripod head according to claim 1 or 2, characterized in that the driver arrangement (5) consists of at least one with the tiltable arrangement (2) rotatably connected support element (6) and at least one driver (7).

4. Camera tripod head according to claim 3, characterized in that at least two drivers (7) are provided and that the drivers (7) are arranged in the inclination direction in front of and behind the spiral spring (3).

5. Camera tripod head according to claim 3 or 4, characterized in that the driver (s) (7) are designed as rods.

6. Camera tripod head according to at least one of claims 3 to 5, characterized in that the driver (s) (7) are provided with friction-reducing elements, in particular rollers (13) or ball bearings, so that the driver (s) (7) tilt move the camera against the spiral spring (3) with reduced friction.

7. camera tripod head with: a base element (104), a tiltable arrangement (102) which on the one hand is rotatable about a tilt axis (N) connected to the base element (104) and on the other hand can be fixedly connected to a camera structure, and a device for compensating one the tilting moment occurring, which has at least one spiral spring (103) which is supported at one end against the base element (104),

characterized in that

the device for compensating for the tilting moment has a driver arrangement (105) which is attached to the tiltable arrangement (102) at a location spaced from the tilt axis (N) and which deflects at least one of the bending springs (103) counter to the tilting direction when the camera assembly is tilted, and that the at least one spiral spring (103) exerts an essentially sinusoidal restoring moment on the inclinable arrangement (102) and thus on the camera structure via the driver arrangement (105).

8. Camera tripod head according to claim 7, characterized in that two spiral springs (103) are provided, which are arranged at an inclination angle of 0 ° with respect to a plane running vertically through the inclination axis (N) in mirror image to one another at the same angle.

9. Camera tripod head according to claim 8, characterized in that when the camera is tilted, a spiral spring (103) is deflected against the direction of inclination, the other spiral spring (103), however, in the direction of inclination.

10. Camera tripod head according to claim 7, characterized in that exactly one spiral spring (103) is provided and that the driver arrangement (105) on the spiral spring (103) is mounted such that it is movable in the longitudinal direction of the spiral spring (103) and the spiral spring (103) deflects at both positive and negative angles of inclination of the camera.

11. Camera tripod head according to one of claims 7 to 10, characterized in that the driver arrangement (105) has a support rod (106) fixedly connected to the inclinable arrangement (102).

12. Camera tripod head according to one of claims 7 to 10, characterized in that the driver arrangement (105) has a carrier rod (106) which is rotatable about its longitudinal axis with respect to the inclinable arrangement (102).

13. Camera tripod head according to claim 11 or 12, characterized in that the driver arrangement (105) also has a sleeve (107) which is arranged rotatably around the support rod (106) and rolls on at least one spiral spring (103) when the camera structure is tilted.

14. Camera tripod head according to one of the preceding claims, characterized in that the driver arrangement (5; 105) is movable relative to the spiral spring (3; 103) when the camera is tilted.

15. Camera tripod head according to at least one of the preceding claims, characterized in that the tiltable arrangement (2; 102) has at least one tilt leg (2 '; 102') and a carrier plate (12; 112).

16. Camera tripod head according to claim 15, characterized in that the tiltable arrangement (2; 102) has at least two tilt legs (2 ¹ ; 102 ') arranged parallel to one another.

17. Camera tripod head according to at least one of the preceding claims, characterized in that the spiral spring

(3; 103) is designed as a spiral spring plate (3; 103).

18. Camera tripod head according to claim 17, characterized in that the spiral spring plate (3; 103) is rectangular, trapezoidal or triangular.

19. Camera tripod head according to claim 17 or 18, characterized in that the bending spring plate (3; 103) recesses such as Has material punchings.

20. Camera tripod head according to claim 1 and one of claims 17 and / or 18 and / or 19, characterized in that the spiral spring plate (3; 103) lies in a plane parallel to the tilt axis (N) when the tilt angle is 0 °.

21. Camera tripod head according to at least one of the preceding claims, characterized in that a plurality of spiral springs (3; 103) are provided.

22. Camera tripod head according to claim 1 and 21, characterized in that in each case a driver (7) is arranged between two spiral springs (3).

23. Camera tripod head according to at least one of the preceding claims, characterized in that at least one spiral spring (3; 103) is replaced by a spiral spring package (3 ').

24. Camera tripod head according to at least one of the preceding claims, characterized in that an adjusting device (8, 9) is additionally provided, by means of which the effective spring length (L) of the spiral spring (3, 3 '; 103) can be changed.

25. Camera tripod head according to claim 24, characterized in that the effective spring length (L) is infinitely variable.

26. Camera tripod head according to at least one of the preceding claims, characterized in that the distance (a) between the tilt axis (N) and the connection point of the tiltable arrangement (2; 102) and driver arrangement

(5; 105) is adjustable.

27. Camera tripod head according to at least one of the preceding claims, characterized in that the spiral spring

(3, 3 '; 103) is arranged relative to the base element (4; 104) and the driver arrangement (5; 105) such that it is slightly pretensioned at an angle of 0 °.

28. Camera tripod head according to at least one of the preceding claims, characterized in that the spiral spring

(3, 3 '; 103) at an inclination angle of 90 ° approximately with its maximum permissible material tension.

29. Camera tripod head according to one of the preceding claims, characterized in that the spiral spring (3, 3 '; 103) consists of carbon fibers, steel or glass fibers or a combination of materials.

30. Camera tripod head according to at least one of the preceding claims, characterized in that a device (16, 17, 18, 19) is additionally provided for damping the tilting movement.

31. Camera tripod head according to at least one of the preceding claims, characterized in that at least one spiral spring (3, 3 '; 103) is designed as a full body.

32. Camera tripod head according to at least one of the preceding claims, characterized in that at least one spiral spring (3, 3 '; 103) is designed as a hollow body.