Tripod telescopic rod locking device

Abstract

According to the tripod telescopic rod locking device, a telescopic rod comprises a fixed pipe joint (7) and a telescopic pipe joint (8) capable of being contracted in the fixed pipe joint (7), and the tripod telescopic rod locking device is characterized in that the locking device comprises a pipe sleeve (11) and an eccentric pulling buckle (12), a locking pressing plate (13) is integrally formed on the pipe sleeve (11) in a cutting mode, a locking hole (14) corresponding to the locking pressing plate (13) is formed in the fixed pipe joint (7), and the eccentric pulling buckle (12) is arranged in the locking hole (14). The pipe sleeve (11) is arranged on the fixed pipe joint (7) in a sleeved mode, and the eccentric pulling buckle (12) is movably installed on the pipe sleeve (11) and controls the locking pressing plate (13) to lock and loosen the telescopic pipe joint (8). The utility model has the advantages that the locking pressure plate and the pipe sleeve are integrally cut and formed, the structure is simple, the locking force can be quickly adjusted as required, and the mounting and the dismounting are quick and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic rod locking, in particular to a locking device for a telescopic rod of a tripod. Background Art

[0002] At present, the pin stops of the telescopic rods of camera tripods are mostly locked by locking sleeves or buckles, with relatively complex structures and inconvenient installation and disassembly. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a locking device for a telescopic rod of a tripod aiming at the above deficiencies.

[0004] The telescopic rod of the utility model includes a fixed pipe section and a telescopic pipe section that can be retracted into the fixed pipe section. The locking device includes a pipe sleeve and an eccentric buckle. A locking pressure plate is integrally cut and formed on the pipe sleeve. A locking hole corresponding to the locking pressure plate is opened on the fixed pipe section. The pipe sleeve is sleeved on the fixed pipe section. The eccentric buckle is movably installed on the pipe sleeve and controls the locking pressure plate to lock and release the telescopic pipe section.

[0005] The movable end of the locking pressure plate is provided with a pressing part bent outwards. A fixed seat is provided on the pipe sleeve on one side of the pressing part. A rotating shaft is provided on the eccentric buckle. An adjusting pull rod that passes through one end of the pressing part and is screwed on the rotating shaft is provided on the fixed seat.

[0006] A set of movable locking strips is provided on the inner side of the locking pressure plate. A set of fixed locking strips is provided on the inner side of the pipe sleeve on the side opposite to the locking pressure plate. A fixed locking strip avoidance notch is provided at one end of the bottom of the fixed pipe section. A circle of inwardly bent limiting edge is provided at one end of the bottom of the pipe sleeve.

[0007] Both the movable locking strips and the fixed locking strips are composed of two upper and lower ones. The distance between the two upper and lower movable locking strips is not greater than the height of the locking hole. The inner sides of the movable locking strips and the fixed locking strips are both arc-shaped structures.

[0008] The movable locking strips are divided into two parts in the middle and are distributed in an isosceles triangle with the fixed locking strips.

[0009] A pair of guide columns is provided on the inner side of the fixed pipe section. A guide limiting cylinder that cooperates with the guide columns is fixedly connected to one end of the top of the telescopic pipe section.

[0010] The advantages of the utility model are: the locking pressure plate and the pipe sleeve are integrally cut and formed, with a simple structure. The locking force can be quickly adjusted according to needs, and the installation and disassembly are fast and convenient. Brief Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the utility model.

[0012] Figure 2 This is a schematic diagram of the disassembled state of the present utility model.

[0013] Figure 3 This is a schematic diagram of the fixed pipe joint structure.

[0014] Figure 4 This is a schematic diagram of the locking device structure.

[0015] Figure 5 This is a schematic diagram of the disassembled structure of the locking device. Detailed implementation manners

[0016] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0018] In the description of the embodiments of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship in which the utility model product is usually placed during use. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, in the description of the present utility model, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0019] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if the terms "arrangement" and "connection" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] As shown in the attached drawings, the telescopic rod of the present utility model includes a fixed pipe section 7 and a telescopic pipe section 8 that can be retracted into the fixed pipe section 7. The locking device includes a pipe sleeve 11 and an eccentric toggle 12. A locking pressure plate 13 is integrally cut and formed on the pipe sleeve 11. A locking hole 14 corresponding to the locking pressure plate 13 is formed on the fixed pipe section 7. The pipe sleeve 11 is sleeved on the fixed pipe section 7, and the eccentric toggle 12 is movably installed on the pipe sleeve 11 and controls the locking pressure plate 13 to lock and release the telescopic pipe section 8.

[0021] Furthermore, the movable end of the locking pressure plate 13 is provided with a pressing portion 35 that bends outward. A fixed seat 36 is provided on the pipe sleeve 11 on one side of the pressing portion 35. A rotating shaft 37 is provided on the eccentric toggle 12. An adjusting pull rod 38 that passes through one end of the pressing portion 35 and is screwed on the rotating shaft 37 is provided on the fixed seat 36.

[0022] The adjusting pull rod 38 is threadedly connected to the rotating shaft 37. The length of the adjusting pull rod 38 can be controlled by rotating the adjusting pull rod 38, so as to adjust the locking force of the eccentric toggle 12.

[0023] Furthermore, a set of movable locking strips 40 is provided on the inner side of the locking pressure plate 13. A set of fixed locking strips 41 is provided on the inner side of the pipe sleeve 11 on the side opposite to the locking pressure plate 13. A fixed locking strip avoidance notch 42 is provided at one end of the bottom of the fixed pipe section 7. A circumferential inwardly bent limiting edge 43 is provided at one end of the bottom of the pipe sleeve 11.

[0024] The movable locking strips 40 and the fixed locking strips 41 are integrally formed with the pipe sleeve 11. After cutting, the movable locking strips 40 are located on the locking pressure plate 13 and follow the locking pressure plate 13 to perform the pressing action.

[0025] The movable locking strips 40 and the fixed locking strips 41 cooperate to clamp the telescopic pipe section 8. The movable locking strips 40 and the fixed locking strips 41 are strip-shaped structures, reducing the contact area and making the locking more sensitive. The inwardly bent limiting edge 43 plays a role in installation limitation, that is, when the pipe sleeve 11 is installed, one end of the bottom of the fixed pipe section 7 abuts against the limiting edge 43. In this case, the height of the inward protrusion of the limiting edge 43 is the same as the height of the protrusion of the movable locking strips 40 and the fixed locking strips 41.

[0026] The width of the avoidance notch 42 for the fixed locking strip is the same as the length of the fixed locking strip 41. After the pipe sleeve 11 is installed, the fixed locking strip 41 is inserted into the avoidance notch 42 for the fixed locking strip, which can prevent the pipe sleeve 11 from rotating on the fixed pipe section 7.

[0027] Preferably, both the movable locking strip 40 and the fixed locking strip 41 are composed of two upper and lower parts. The distance between the two upper and lower movable locking strips 40 is not greater than the height of the locking hole 14. The inner sides of the movable locking strip 40 and the fixed locking strip 41 are both arc-shaped structures.

[0028] In this case, preferably, the distance between the two movable locking strips 40 is the same as the height of the locking hole 14. After the pipe sleeve 11 is installed, the two movable locking strips 40 are located in the locking hole 14, which can play a role in positioning up and down, that is, the vertical position of the pipe sleeve 11 is fixed by the two upper and lower movable locking strips 40.

[0029] Furthermore, the movable locking strip 40 is divided into two parts in the middle and is distributed in an isosceles triangle with the fixed locking strip 41.

[0030] When the movable locking strip 40 follows the locking pressure plate 13 and is squeezed inward, since it is divided into two parts in the middle, during the pressing process, after the locking pressure plate 13 is subjected to resistance, it is more conducive to the bending of the locking pressure plate 13. The movable locking strip 40 divided into two parts can better fit on the pipe wall of the telescopic pipe section 8.

[0031] Furthermore, a pair of guide posts 45 are provided on the inner side of the fixed pipe section 7, and a guide limit cylinder 46 that is used in cooperation with the guide posts 45 is fixedly connected to one end of the top of the telescopic pipe section 8.

[0032] One end of the top of the guide limit cylinder 46 is connected by a connecting plate. Guide grooves that are used in cooperation with the guide posts 45 are respectively provided on both sides of the guide limit cylinder 46, which effectively ensures that the telescopic pipe section 8 moves linearly in the fixed pipe section 7 and prevents rotation.

[0033] The guide limit cylinder 46 is sleeved on the outer side of one end of the top of the telescopic pipe section 8. During specific installation, two positioning holes are symmetrically provided on the side wall of the telescopic pipe section 8, and two positioning protrusions that are used in cooperation with the positioning holes are provided on the inner side wall of the guide limit cylinder 46. After the guide limit cylinder 46 is sleeved on the telescopic pipe section 8, it can be fixed by the cooperation of the positioning protrusions and the positioning holes.

Claims

1. A locking device for a telescopic rod of a tripod, the telescopic rod comprising a fixed tube section (7) and a telescopic tube section (8) which can be retracted in the fixed tube section (7), characterized in that The locking device comprises a pipe sleeve (11) and an eccentric buckle (12); a locking pressure plate (13) is integrally cut and formed on the pipe sleeve (11); a locking hole (14) corresponding to the locking pressure plate (13) is opened on the fixed pipe section (7); the pipe sleeve (11) is sleeved on the fixed pipe section (7); the eccentric buckle (12) is movably mounted on the pipe sleeve (11) and controls the locking pressure plate (13) to lock and release the telescopic pipe section (8).

2. A tripod telescopic rod locking device according to claim 1, characterized in that The movable end of the locking pressure plate (13) is provided with a pressing portion (35) bent outward, a fixing seat (36) is provided on the pipe sleeve (11) located on one side of the pressing portion (35), a rotating shaft (37) is provided on the eccentric buckle (12), and an adjusting rod (38) is provided on the fixing seat (36) with one end passing through the pressing portion (35) and being screwed on the rotating shaft (37).

3. A tripod telescopic rod locking device according to claim 2, characterized in that A group of movable locking strips (40) are provided on the inner side of the locking pressure plate (13), a group of fixed locking strips (41) are provided on the inner side of the pipe sleeve (11) on the side opposite to the locking pressure plate (13), a fixed locking strip avoidance notch (42) is provided on the bottom end of the fixed pipe section (7), and a circle of inwardly bent limiting edge (43) is provided on the bottom end of the pipe sleeve (11).

4. A tripod telescopic rod locking device according to claim 3, characterized in that The movable locking strip (40) and the fixed locking strip (41) are each composed of two upper and lower pieces, the spacing between the two movable locking strips (40) is no greater than the height of the locking hole (14), and the inner sides of the movable locking strip (40) and the fixed locking strip (41) are both arc-shaped structures.

5. A tripod telescopic rod locking device according to claim 4, characterized in that The movable locking strip (40) is divided into two parts in the middle, and forms an isosceles triangle with the fixed locking strip (41).

6. A tripod telescopic rod locking device according to claim 1, characterized in that A pair of guide posts (45) are provided on the inner side of the fixed pipe section (7), and a guide limit cylinder (46) matched with the guide posts (45) is fixedly connected to one end of the top of the telescopic pipe section (8).

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