CN201310727Y - Locking device for extendable leg tubes of tripod - Google Patents

Abstract

The utility model discloses photographic equipment, and particularly relates to a locking device for extendable leg tubes of a tripod. The utility model provides a novel locking device for extension tube fittings of a tripod, which can ensure tighter connection between and more firm locking of the tube fittings, higher shock strength, and rapid locking and loosening. The utility model provides the technical scheme as follows: the locking device for the extendable leg tubes of a tripod comprises a primary tube fitting, a joint arranged on the primary tube fitting, screw threads formed on the exterior of the joint, a secondary tube fitting, a locking ring, a locking sleeve and screw threads formed on the interior of the locking sleeve, wherein, an outer conical surface with a tapered opening is formed at the upper part of the locking ring, and an inner conical surface in match with the outer conical surface is formed at the lower end of the joint. Compared with the prior art, the utility model has the advantages of tightly locking the leg tubes of the tripod, improving the bearing capacity and the shock resistance of the leg tubes of the tripod, and facilitating normal photographic operation irrespective of a weight hung on the tripod.

Description

A kind of locking device of photographic tripod telescopic leg pipe

Technical field

The utility model relates to photographic goods, especially relates to photographic tripod telescopic leg pipe locking device.

Background technique

The traditional photography tripod on market, selling or use, the locking of each one-level pipe fitting and secondary pipe fitting is by joint, lock sleeve, and the locking of these one or more hatch lock collars between the two realizes.From practical effect, this structural type is simple, but locking uses shock strength not high between the pin pipe fitting when photographic tripod locking is taken, and Guan Shihui causes plastic parts stuck in the pin pipe at the locking pin, because hatch lock collar design is a plurality of and is not with tapering, during the sand and dust of user in cleaning photographic tripod pipe fitting, can not reinstall, bring many troubles to the user.

Summary of the invention

The locking device that the utility model patent provides a kind of new photographic tripod to stretch pipe fitting, it can make, and connection between the pipe fitting is more tight, locking is more firm, shock strength is higher, can reach quick locking, unclamp fast, and the hatch lock collar 30 of the time band tapering that do not have special tool(s) is difficult to extract in lock sleeve 40.

For achieving the above object, the technical solution of the utility model is: a kind of locking device of photographic tripod telescopic leg pipe, comprise one-level pipe fitting 10, one-level pipe fitting 10 is provided with joint 11, and joint 11 outsides are provided with screw thread 13, secondary pipe fitting 20, clamp ring 30, lock sleeve 40, lock sleeve 40 inside are provided with screw thread 43, the outer conical surface 24 of band tapering opening 38 is arranged at clamp ring 30 tops, and there is the internal conical surface 12 that cooperates with outer conical surface 24 joint 11 lower ends.

In the described clamp ring 30 positioning boss 28 is arranged, positioning boss 28 lower ends are faced directly or inclined-plane 25, and lock sleeve 40 is provided with slot to make way 42, face directly or inclined-plane 41 in establish slot to make way 42 lower ends.

Have waist shaped hole 19 on the secondary pipe fitting 20, anti-slide plate 21 is arranged on the secondary pipe fitting 20, anti-slide plate 21 inwalls have waist shape boss 22, and both can interconnect.

The locking device of above-mentioned photographic tripod telescopic leg pipe, its positioning boss (28) lower end face directly or inclined-plane (25) are provided with opening.

The locking device of aforementioned photographic tripod telescopic leg pipe, its described opening have 1-5.

Above-mentioned band tapering hatch lock collar 30 can be designed to multiple structure with cooperating of lock sleeve 40, and one is band tapering hatch lock collar 30 outer conical surface 24 and the locking of joint 11 lower end internal conical surfaces 12 mutual extrusion; Inclined-plane 25 that also can be by band tapering hatch lock collar 30 outer conical surface 24 and joint 11 lower end internal conical surfaces and band tapering hatch lock collar 30 lower ends and lock sleeve 40 is faced directly or interior inclined-plane 41 mutual extrusion are locked simultaneously.

The utility model compared with prior art, have firm locking tripod pin pipe, and the pin pipe that can improve tripod bears and shock resistance, therefore have safe and reliable, the advantage of use aspect, the operation of normally photographing in the time of more making things convenient for the photographer on tripod, to hang with weight.

Description of drawings

Fig. 1, a kind of locking device exploded view that is used for the telescopic leg pipe of photographic tripod

Fig. 2, a kind of locking device sectional view that is used for the telescopic leg pipe of photographic tripod

Among the figure: 10, one-level pipe fitting, 11, joint, 12, band tapering inclined-plane, 13, outside thread, 19, waist shaped hole, 20, the secondary pipe fitting, 21, anti-slide plate, 22, waist shape boss, 24, tapering, 25, inclined-plane, lower end, 28, positioning boss, 30, the collar of band tapering hatch lock, 38, opening, 40, lock sleeve, 41, interior inclined-plane, 42, slot to make way, 43, internal thread

Embodiment

Be described further this uses is novel below in conjunction with accompanying drawing and concrete enforcement, but not conduct to qualification of the present utility model.

A kind of telescopic leg pipe locking device that is used for photographic tripod as shown in Figure 1, comprising one-level pipe fitting 10 and secondary pipe fitting 20, be provided with anti-slide plate 21 between one-level pipe fitting 10 and the secondary pipe fitting 20, secondary pipe fitting 20 is provided with waist shaped hole 19, anti-slide plate 21 inwalls are provided with waist shape boss 22, and both can interconnect.

The outside telescopic lap splice 11 in one-level pipe fitting 10 lower ends, outside, joint 11 lower ends is provided with outside thread 13, joint 11 internal holes are a band tapering inclined-plane 12, joint 11 lower ends are provided with outside thread 13 and are connected with the internal thread 43 that lock sleeve 40 is provided with, band tapering opening 38 clamp rings 30 cylindricals upper end is provided with the tapering 24 of several angle, be a location boss 28 below the tapering 24, positioning boss 28 lower ends are faced directly or inclined-plane 25, and slot to make way 42 the insides that positioning boss 28 is stuck in lock sleeve 40 make it upper and lower displacement together.

Lock sleeve 40 is provided with internal thread 43, is a slot to make way 42 below the internal thread 43, is inclined-plane 41 in below the slot to make way 42.

In conjunction with Fig. 2 as can be seen, working principle of the present utility model: by rotational lock cover 40, internal thread 43 in the lock sleeve 40 interacts with the outside thread of joint 11 13, make band tapering opening 38 clamp rings 30 pressurizeds between lock sleeve 40 and the joint 11, the outer conical surface 24 of band tapering hatch lock collar 30 is interfered with the lower end internal conical surface 12 of joint 11, the positioning step of band tapering hatch lock collar 30 is stuck in slot to make way 42 the insides of lock sleeve 40, interfere with lock sleeve 40 interior inclined-planes 41 on band inclined-plane, tapering hatch lock collar 30 lower end 25, cause band tapering hatch lock collar 30 to pack tightly secondary pipe fitting 20, thereby reach the purpose of locking secondary pipe fitting 20.

Because bonded block connects by the inclined-plane of band tapering when locking, more firm than connecting by independent circle contact, and, can improve the pin pipe strength and the shock resistance of tripod in conjunction with closely, use safety and reliability.

Claims (6)

1, a kind of locking device of photographic tripod telescopic leg pipe, comprise one-level pipe fitting (10), one-level pipe fitting (10) is provided with joint (11), joint (11) outside is provided with screw thread (13), secondary pipe fitting (20), clamp ring (30), lock sleeve (40), lock sleeve (40) inside is provided with screw thread (43), it is characterized in that: the outer conical surface (24) of band tapering opening (38) is arranged at clamp ring (30) top, and there is the internal conical surface (12) that cooperates with outer conical surface (24) joint (11) lower end.

2, the locking device of photographic tripod telescopic leg pipe according to claim 1 is characterized in that positioning boss (28) is arranged in the described clamp ring (30), and lock sleeve (40) is provided with slot to make way (42).

3, the locking device of photographic tripod telescopic leg pipe according to claim 2 is characterized in that positioning boss (28) lower end faces directly or inclined-plane (25), faces directly or inclined-plane (41) in establish slot to make way (42) lower end.

4, according to the locking device of the arbitrary described photographic tripod telescopic leg pipe of claim 1 to 3, it is characterized in that having on the secondary pipe fitting (20) waist shaped hole (19), anti-slide plate (21) is arranged on the secondary pipe fitting (20), and anti-slide plate (21) inwall has waist shape boss (22), and both can interconnect.

5, the locking device of photographic tripod telescopic leg pipe according to claim 3, it is characterized in that positioning boss (28) lower end face directly or inclined-plane (25) are provided with opening.

6, the locking device of photographic tripod telescopic leg pipe according to claim 1 or 5 is characterized in that described opening has 1-5.

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