Scissor jack with fork lever nut
A fork nut and jack technology, which is applied in the direction of lifting devices, etc., can solve the problems such as obstruction, screw straightness, screw thread profile, strength and other problems that are difficult to ensure quality, so as to ensure reliability, improve processing quality, and reduce scrap rate. Effect
Active Publication Date: 2013-02-06
NANTONG TONGRUN AUTO ACCESSORY
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Problems solved by technology
The old-fashioned screw thread of this type of jack is generally set on the hinge block, and the industry term is called "hinge nut" - its function is not only as the hinge pivot of the support arm, but also as a screw thread combination with the screw rod. The nut of the pair, this traditional design makes the screw rod thin and long, the straightness of the screw rod and the tooth shape and strength of the screw thread are not easy to guarantee, and because the screw rod is very long, the protruding part appears to be in the way during operation
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[0016] The following further description of the present invention in combination with the accompanying drawings of the embodiments will help to understand the technical content and effects of the case, but the embodiments do not constitute a limitation to the technical solution.
[0017] As can be seen from the drawings, the embodiment of the present invention is a new structural scheme redesigned on the basis of the traditional screw jack. The main structural changes are: the traditional hinge nut block is divided into the left with the through rod hole 13 The hinge block 5 and the "Y"-shaped fork rod nut 15 are two parts, and the fork rod nut 15 is rigidly connected with the left hinge block 5, and the hole center line of the internal thread 28 of the extension neck tube 27 is the same as the through rod hole 13. axis. The overall structure of the scissor jack provided with the fork rod nut is arranged as follows: the first pin shaft rotation pair 8 and the lower pin shaft seco...
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The invention discloses a scissor jack with a fork lever nut. The scissor jack is characterized in that: a rod through hole (13) vertical to the axial lead is arranged on a left hinge block (5); an outer-circle profile surface (14) of the rod through hole (13) is in rigid combination with a matching hole I (16) and a matching hole II (17) of a fork lever nut (15); the two fork lever pins of the fork lever nut (15) are formed in Y shape; the right end of the fork lever nut (15) is an extension closing pipe (27); an internal thread (28) is arranged in the extension closing pipe (27), and forms a thread pair (3) with a matching screw outer thread (18); the axial lead of the thread pair (3) is coaxial with that of the rod through hole (13); and a limit sleeve (12) is arranged on the screw. The scissor jack has the beneficial effects that: the fork lever nut replaces the power thread pair of the traditional scissor jack, the processing quality of a slender screw is obviously improved, the rejection rate is greatly reduced, the strength of the mechanism is improved, and the product reliability is guaranteed.
Description
Technical field [0001] The invention relates to a scissor jack, in particular to a scissor jack in which a "Y"-shaped fork rod nut is specially arranged in a power thread pair. Background technique [0002] Scissor jacks are used in vehicle-mounted tools, or used for lifting or supporting heavy objects. The thread of the old type jack and the screw is generally set on the hinge block, the industry term is called "hinge nut"-its function is not only as the hinge pivot of the support arm, but also as a thread combined with the screw The traditional design of the auxiliary nut makes the screw thin and long. The straightness of the screw and the quality of the thread profile and strength of the screw are not easy to guarantee. Also, because the screw is very long, the extended part appears to be an obstacle in operation. Summary of the invention [0003] The purpose of the present invention is to take into account the deficiencies of the above-mentioned comparative technical solution...
Claims
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IPC IPC(8): B66F3/08
Inventor 韩进顾晓峰陈有源
Owner NANTONG TONGRUN AUTO ACCESSORY