CN201193632Y - Screw telescoping rod - Google Patents

Abstract

The utility model discloses a screw expansion link, which comprises an external pipe, a screw rod and a nut; wherein, an intermediate pipe which is internally provided with an internal pipe is arranged in the external pipe; the nut is fixed at the lower end of the internal pipe; a fixed plate with a location boss is fixed at the lower end of the screw rod; a blocking sheet is fixed at the upper end of the screw rod; the fixed plate is fixed at the lower end of the intermediate pipe; the upper end of the intermediate pipe is provided with a location groove; a location sheet is fixed at the location groove and the cavity of the external pipe; the upper end of the external pipe bends to the middle and a limit lug boss is arranged at the cavity of the lower part of the external pipe. The screw expansion bar has the advantages that the expansion of the expansion bar is realized through the displacement of the internal pipe and the external pipe which are both of the pipe structure; the processing and matching precision can be easily improved; the appearance is beautiful and elegant; the blocking sheet is fixed at the upper end of the screw rod, which eliminates the phenomenon that the screw rod is detached from the nut and puts an end to accidents.

Description

The screw thread rod member that stretches

Technical field

The utility model relates to a kind of rod member that can stretch, and specifically, is the flexible rod member of a kind of screw thread

Background technique

The flexible rod member of screw thread is widely used in and needs to regulate on the supporting element of length distance, for example jack, connect the strut of chair cushion and chair pin, in existing technology, the flexible rod member of screw thread comprises outer tube, nut and screw rod, and nut is fixed on the upper end of outer tube, and screw rod screws in the nut, it is not in part, 1. screw rod and nut quality of fit are difficult to improve, and screw rod is easy to generate and rocks, and influences support accuracy; 2. screw rod and nut mating part expose, and be not attractive in appearance; When 3. installing, screw rod is that the upper end from nut inwardly screws in nut, and in use, screw rod is when inner rotary, and screw rod screws out nut easily and breaks away from, the generation that causes the accident.

The model utility content

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can improve support accuracy, appearance looks elegant generous, can eliminate screw rod and nut breaks away from, stops the flexible rod member of screw thread that accident takes place.

The technological scheme of the flexible rod member of the utility model screw thread, comprise outer tube, screw rod and nut, also be provided with intervalve in the described outer tube, the lower end of pipe in the described nut of pipe is fixed in being provided with in the intervalve, the fixed tray with positioning boss is being fixed in the lower end of described screw rod, blocking blade is being fixed in the upper end of described screw rod, described fixed tray positioning and fixing is in the lower end of intervalve, the upper end of intervalve is provided with locating slot, the inner chamber of locating slot and outer tube is being fixed location piece, the upper end of outer tube is to bent intermediate, and the outer tube lower lumen is provided with positive stop lug boss.

The beneficial effects of the utility model are, the flexible rod member of the utility model screw thread flexible is that the displacement of interior pipe and outer tube realizes, intervalve and interior Guan Jun are tube constructions, improve processing and quality of fit easily, appearance looks elegant is generous, blocking blade is being fixed in the upper end of screw rod, has eliminated the phenomenon of screw rod and nut disengaging, the generation of having stopped accident.

Description of drawings

Fig. 1 is the structural representation of the flexible rod member of the utility model screw thread.

Embodiment

The screw thread shown in Figure 1 rod member that stretches, comprise outer tube, screw rod and nut, also be provided with intervalve 2 in the described outer tube 1, pipe 3 in being provided with in the intervalve 2, the lower end of pipe 3 in described nut 10 is fixed on, the fixed tray 8 with positioning boss 9 is being fixed in the lower end of described screw rod 4, blocking blade 6 is being fixed in the upper end of described screw rod 4, described fixed tray 8 positioning and fixing are in the lower end of intervalve 2, the upper end of intervalve 2 is provided with locating slot 11, locating slot 11 is being fixed location piece 5 with the inner chamber of outer tube 1, and the upper end of outer tube 1 is to bent intermediate, and outer tube 1 lower lumen is provided with positive stop lug boss 7.

Claims (1)

1. the flexible rod member of screw thread, comprise outer tube, screw rod and nut, it is characterized in that, also be provided with intervalve (2) in the described outer tube (1), be provided with the lower end that the described nut of interior pipe (3) (10) is fixed on interior pipe (3) in the intervalve (2), the have positioning boss fixed tray (8) of (9) is being fixed in the lower end of described screw rod (4), blocking blade (6) is being fixed in the upper end of described screw rod (4), described fixed tray (8) positioning and fixing is in the lower end of intervalve (2), the upper end of intervalve (2) is provided with locating slot (11), locating slot (11) is being fixed location piece (5) with the inner chamber of outer tube (1), the upper end of outer tube (1) is to bent intermediate, and outer tube (1) lower lumen is provided with positive stop lug boss (7).

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