Rotary locking type multi-stage telescopic supporting leg pipe

Abstract

The utility model provides a rotary locking type multi-stage telescopic supporting leg pipe which comprises multiple stages of leg pipes which are sequentially connected in a nested mode, and the pipe diameters of the multiple stages of leg pipes are gradually reduced from top to bottom. Two symmetrical reinforcing ribs parallel to the axis are arranged on the inner wall of each stage of foot tube; except the uppermost level of foot tube, the upper end of each level of foot tube is provided with a rotary locking mechanism; the rotary locking mechanism comprises a base, an eccentric wheel and an eccentric wheel shaft; except for the uppermost level of foot tube, the upper end of each level of foot tube and the rotary locking mechanism are inserted into the last level of foot tube, the two arc-shaped notches in the circumferential face of the base and the groove in the eccentric wheel are all matched with the reinforcing ribs in the last level of foot tube, and the width of the arc-shaped notches is larger than that of the groove. The left and right side walls of the arc-shaped notch are matched with the reinforcing ribs to limit the left and right rotation amplitude of the base and the foot pipe, and the left and right side walls of the groove are matched with the reinforcing ribs to enable the eccentric wheel not to rotate along with the base. According to the utility model, rapid locking and rapid loosening of the multi-stage foot tube can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to photographic equipment technical field, concretely relates to a rotating lock formula multistage telescopic support foot pipe. BACKGROUND

[0002] In photography, usually will use tripod, four -legged stand or single -leg support to provide support to photographic equipment, in order to make the height of tripod, four -legged stand or single -leg adjustable, the prior art generally will be designed as three -level, four -level even more level foot pipe by multistage foot pipe nested in turn, thereby realizing telescopic function.But in prior art, when the height of support foot pipe needs to be fixed, it is necessary to twist multiple locking members one by one to lock each level foot pipe, which is relatively cumbersome to operate, and time is wasted, and vice versa. SUMMARY

[0003] The utility model solves the technical problem to provide a rotating lock formula multistage telescopic support foot pipe, can make multistage foot pipe realize quick locking and quick release.

[0004] To solve the above technical problem, the technical scheme of the utility model is as follows: a rotating lock formula multistage telescopic support foot pipe, including multistage foot pipe connected in turn, the pipe diameter of multistage foot pipe decreases gradually from top to bottom;

[0005] The inner wall of each level foot pipe is provided with two symmetrical and parallel reinforcing ribs with the axis;

[0006] Except the uppermost level foot pipe, the upper end of every level foot pipe is provided with a rotating locking mechanism;

[0007] The rotating locking mechanism includes a base, an eccentric wheel and an eccentric wheel shaft, the circular surface of the base is provided with two symmetrical arc-shaped notches, the middle part of the base is provided with an axial eccentric screw hole, the eccentric wheel is provided with an axial light hole and has a circular surface, an axial groove is arranged on the circular surface, the lower end of the eccentric wheel shaft is a threaded end, the threaded end of the eccentric wheel shaft is fixed in the eccentric screw hole of the base after passing through the light hole of the eccentric wheel, the eccentric wheel can rotate around the eccentric wheel shaft, and the base is fixedly connected with the upper end of the foot pipe;

[0008] Except the uppermost level foot pipe, the upper end of every level foot pipe is inserted into the upper level foot pipe together with the rotating locking mechanism, the two arc-shaped notches of the base surface and the groove on the eccentric wheel are matched with the reinforcing ribs in the upper level foot pipe, the width of the arc-shaped notch is greater than the width of the groove, and the cooperation of the left and right side walls of the arc-shaped notch and the reinforcing ribs can limit the left and right rotation amplitude of the base and the foot pipe, and the cooperation of the left and right side walls of the groove and the reinforcing ribs can make the eccentric wheel not rotate with the base.

[0009] The working principle and using method of the above technical solution are:

[0010] 1) Since the inner wall of each level of the foot pipe is provided with two symmetric and parallel to the axis reinforcing ribs, and the upper end of each level of the foot pipe is provided with a rotating locking mechanism, the rotating locking mechanism comprises a base, an eccentric wheel and an eccentric wheel shaft, the two arc-shaped notches on the circumference of the base and the groove on the eccentric wheel are matched with the reinforcing ribs in the inner wall of the upper level of the foot pipe, the cooperation of the left and right sidewalls of the arc-shaped notches and the reinforcing ribs can limit the left and right rotation amplitude of the base and the foot pipe, and the cooperation of the left and right sidewalls of the groove and the reinforcing ribs can make the eccentric wheel not rotate with the base; therefore, as long as the lowermost level of the foot pipe is held to rotate relative to the other foot pipes, the other foot pipes can be driven to rotate in succession through the cooperation of the reinforcing ribs and the base, and the arc surface of the eccentric wheel of all rotating locking mechanisms can be in close contact with or separated from the inner wall of the upper level of the foot pipe, so as to achieve the locking or loosening effect;

[0011] 2) When all the rotating locking mechanisms are in the loosening state, the upper part of the supporting foot pipe is held and lifted up, and the multi-level foot pipe can be fully stretched downward under the action of its own gravity;

[0012] 3) The lowermost level of the foot pipe is held to rotate relative to the other foot pipes in a certain direction, and then the other foot pipes are driven to rotate in succession, and all the rotating locking mechanisms are locked in succession, so that the multi-level foot pipe can be quickly locked;

[0013] 4) The lowermost level of the foot pipe is held to rotate relative to the other foot pipes in the opposite direction, and then the other foot pipes are driven to rotate in succession, and all the rotating locking mechanisms are loosened in succession, so that the multi-level foot pipe can be quickly loosened.

[0014] Further, the lower end of each level of the foot pipe except the lowermost level is provided with a closing part which can prevent the next level of the foot pipe from being separated.

[0015] In an embodiment, the length of the eccentric wheel is less than the diameter of the base.

[0016] In an embodiment, the eccentric distance of the eccentric hole on the base is 1.5mm.

[0017] In an embodiment, the eccentric wheel shaft is a stepped shaft, and the through hole on the eccentric wheel is a stepped hole.

[0018] In an embodiment, the multi-level foot pipe is a carbon fiber pipe.

[0019] The beneficial effects of the utility model are: the utility model can make the multi-level foot pipe with not less than three levels to be quickly locked and loosened through the cooperation of the simple and ingenious rotating locking mechanism and the reinforcing ribs, greatly improves the convenience of operation, and the structure is very simple, easy to process and assemble. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole section structure schematic view of support foot pipe in the embodiment of the utility model;

[0021] Figure 2 It is the local section structure schematic view of support foot pipe in the embodiment of the utility model;

[0022] Figure 3 It is the top view structure schematic view of Figure 2 ;

[0023] Figure 4 It is the section structure schematic view of base in the embodiment of the utility model;

[0024] Figure 5 It is the bottom view structure schematic view of Figure 4 ;

[0025] Figure 6 It is the section structure schematic view of eccentric wheel in the embodiment of the utility model;

[0026] Figure 7 It is the top view structure schematic view of Figure 6 ;

[0027] Figure 8 It is the section structure schematic view of eccentric wheel axle in the embodiment of the utility model;

[0028] The figure mark is: 10, foot pipe; 11, reinforcing rib; 20, base; 21, arc-shaped notch; 22, eccentric screw hole; 30, eccentric wheel; 31, light hole, 32, recess; 40, eccentric wheel axle; 50, closing part. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of those skilled in the art, the utility model is further described below in combination with embodiments and drawings, and the content mentioned in the embodiment is not the limitation of the utility model.

[0030] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as the limitation of the utility model.

[0031] In the description of the utility model, it is necessary to explain that, unless otherwise provided and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it also can be the communication inside two elements, it can be direct connection, also can be indirectly connected through intermediate medium, for the ordinary skill in the field, the specific meaning of the term can be understood according to specific circumstances. Embodiment

[0032] As Figures 1 to 8 The utility model discloses a kind of rotary locking multi-stage telescopic support foot pipes, including sequentially nested connection multi-stage foot pipe 10, the pipe diameter of multi-stage foot pipe 10 gradually decreases from top to bottom;The inner wall of each stage foot pipe 10 is equipped with two symmetrical and parallel with axis reinforcing rib 11;Except the uppermost stage foot pipe 10, the upper end of every stage foot pipe 10 is equipped with rotary locking mechanism;The rotary locking mechanism includes base 20, eccentric wheel 30 and eccentric wheel shaft 40, the circular circumferential surface of base 20 is equipped with two symmetrical arc-shaped notches 21, the middle part of base 20 is equipped with an axial eccentric screw hole 22, the eccentric wheel 30 is equipped with an axial light hole 31 and has a circular arc surface, and a groove 32 is arranged on the circular arc surface, the lower end of eccentric wheel shaft 40 is threaded end, eccentric wheel shaft 40 is fixed after being screwed into the eccentric screw hole 22 of base 20 after passing through the light hole 31 of eccentric wheel 30, eccentric wheel 30 can rotate around eccentric wheel shaft 40, and the upper end of base 20 is fixedly connected with foot pipe 10;Except the uppermost stage foot pipe 10, the upper end of every stage foot pipe 10 is inserted into the upper stage foot pipe 10 together with rotary locking mechanism, the groove 32 on the arc-shaped notch 21 of the circumferential surface of base 20 and eccentric wheel 30 are matched with the reinforcing rib 11 in the upper stage foot pipe 10, the width of arc-shaped notch 21 is greater than the width of groove 32, the cooperation of the left and right side walls of arc-shaped notch 21 and reinforcing rib 11 can limit the left and right rotation amplitude of base 20 and foot pipe 10, and the cooperation of the left and right side walls of groove 32 and reinforcing rib 11 can make eccentric wheel 30 not rotate with base 20;Except the lowermost stage foot pipe 10, the lower end of every stage foot pipe 10 is equipped with closing piece 50 that can prevent the next stage foot pipe 10 from separating.

[0033] In the embodiment, the multi-stage foot pipe 10 is carbon fiber pipe, the lower end of base 20 is embedded into the upper end of foot pipe 10 and is fixed by structural adhesive bonding;The length of eccentric wheel 30 is less than the diameter of base 20;The eccentric distance of eccentric screw hole 22 on base 20 is 1.5mm;Eccentric wheel shaft 40 is stepped shaft, and the light hole 31 on eccentric wheel 30 is stepped hole.

[0034] The working principle and use method of the embodiment are as follows:

[0035] 1) Since the inner wall of each level of the foot pipe 10 is provided with two symmetrical and parallel to the axis of the reinforcing ribs 11, the upper end of each level of the foot pipe 10 is provided with a rotating locking mechanism, the rotating locking mechanism comprises a base 20, an eccentric wheel 30 and an eccentric wheel shaft 40, the two arc-shaped notches 21 on the circumference of the base 20 and the groove 32 on the eccentric wheel 30 are matched with the reinforcing ribs 11 in the inner wall of the upper level of the foot pipe 10, the left and right side walls of the arc-shaped notches 21 can limit the left and right rotation amplitude of the base 20 and the foot pipe 10, and the left and right side walls of the groove 32 can make the eccentric wheel 30 not rotate with the base 20; therefore, as long as the lowermost level of the foot pipe 10 is held to rotate relative to the other foot pipes 10, the other foot pipes 10 can be driven to rotate in turn through the cooperation of the reinforcing ribs 11 and the base 20, and the arc surface of the eccentric wheel 30 of all rotating locking mechanisms can be changed to be close to or separated from the inner wall of the upper level of the foot pipe 10, so that the locking or loosening effect is achieved;

[0036] 2) When all the rotating locking mechanisms are in the loosening state, the upper part of the supporting foot pipe 10 is held and lifted up, and the multi-level foot pipe 10 can be fully stretched downward under the action of its own gravity;

[0037] 3) The lowermost level of the foot pipe 10 is held to rotate relative to the other foot pipes in a certain direction, thereby driving the other foot pipes 10 to rotate in turn and making all the rotating locking mechanisms locked in turn, so that the multi-level foot pipe 10 can be quickly locked;

[0038] 4) The lowermost level of the foot pipe 10 is held to rotate relative to the other foot pipes in the opposite direction, thereby driving the other foot pipes 10 to rotate in turn and making all the rotating locking mechanisms loosened in turn, so that the multi-level foot pipe 10 can be quickly loosened.

[0039] The embodiment can quickly lock and loosen the multi-level foot pipe 10 with not less than three levels through the cooperation of the simple and ingenious rotating locking mechanism and the reinforcing ribs 11, greatly improving the convenience of operation, and the structure is very simple and easy to process and assemble.

[0040] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can also be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

[0041] In order to make the ordinary skilled in the art more conveniently understand the improvement of the utility model relative to the prior art, some drawings and descriptions of the utility model have been simplified, and some other elements are omitted in the application file for the sake of clarity, and the person skilled in the art should realize that these omitted elements can also constitute the content of the utility model.

Claims

1. A rotary locking multi-stage telescopic support tube, comprising a multi-stage tube (10) nested sequentially, the diameter of the multi-stage tube (10) decreasing progressively from top to bottom; characterized in that: Each foot tube (10) has two symmetrical reinforcing ribs (11) on its inner wall that are parallel to the axis. Except for the topmost leg tube (10), each of the other leg tubes (10) is equipped with a rotary locking mechanism at its upper end; The rotary locking mechanism includes a base (20), an eccentric wheel (30), and an eccentric wheel shaft (40). The circular circumference of the base (20) is provided with two symmetrical arc-shaped notches (21). The middle part of the base (20) is provided with an axial eccentric screw hole (22). The eccentric wheel (30) is provided with an axial open hole (31) and has an arc surface. An axial groove (32) is provided on the arc surface. The lower end of the eccentric wheel shaft (40) is a threaded end. The threaded end of the eccentric wheel shaft (40) passes through the open hole (31) of the eccentric wheel (30) and is screwed into the eccentric screw hole (22) of the base (20) for fixation. The eccentric wheel (30) can rotate around the eccentric wheel shaft (40). The base (20) is fixedly connected to the upper end of the foot tube (10). Except for the top-level leg tube (10), the upper end of each of the other leg tubes (10) along with the rotating locking mechanism is inserted into the upper-level leg tube (10). The two arc-shaped notches (21) on the circumference of the base (20) and the groove (32) on the eccentric wheel (30) are matched with the reinforcing rib (11) in the upper-level leg tube (10). The width of the arc-shaped notch (21) is greater than the width of the groove (32). The matching of the left and right sidewalls of the arc-shaped notch (21) with the reinforcing rib (11) can limit the left and right rotation of the base (20) and the leg tube (10). The matching of the left and right sidewalls of the groove (32) with the reinforcing rib (11) can prevent the eccentric wheel (30) from rotating with the base (20).

2. The rotary locking multi-stage telescopic support tube according to claim 1, characterized in that: Except for the lowest level leg tube (10), the lower end of each of the other level leg tubes (10) is equipped with a capping piece (50) to prevent the next level leg tube (10) from detaching.

3. The rotary locking multi-stage telescopic support tube according to claim 1 or 2, characterized in that: The length of the eccentric wheel (30) is less than the diameter of the base (20).

4. The rotary locking multi-stage telescopic support tube according to claim 1 or 2, characterized in that: The eccentricity of the eccentric screw hole (22) on the base (20) is 1.5 mm.

5. The rotary locking multi-stage telescopic support tube according to claim 1 or 2, characterized in that: The eccentric wheel shaft (40) is a stepped shaft, and the light hole (31) on the eccentric wheel (30) is a stepped hole.

6. The rotary locking multi-stage telescopic support tube according to claim 1 or 2, characterized in that: All of the multi-stage leg tubes (10) are carbon fiber tubes.

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