阅读说明：本技术 磁力伸缩套筒 (Magnetic telescopic sleeve ) 是由 李磊 段延辉 王晓恒 张红钵 杨兴国 于 2019-10-18 设计创作，主要内容包括：本发明公开了磁力伸缩套筒,包括套筒及设置在套筒内的强力磁环,套筒包括旋拧螺母的下端部及连接旋柄的上端部,上端部内和下端部内开设有上下贯通的通孔,所述强力磁环通过螺旋弹簧连接在下端部的通孔内,螺旋弹簧和强力磁环的内径均大于通孔的内径。本发明通过贯通的通孔的设计,能够对不同长度的螺栓上螺母进行旋拧,而且在旋拧过程中能够吸附螺母,保证旋拧的可靠性；侧面设置的安装槽与普通的手柄相匹配,能够在同一平面对螺母进行旋拧,拨动环能够沿着固定筒上下滑动,进而适应不同操作空间的使用限制,能够在套筒的上方旋拧螺母。(The invention discloses a magnetic telescopic sleeve, which comprises a sleeve and a powerful magnetic ring arranged in the sleeve, wherein the sleeve comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle, through holes which are communicated up and down are formed in the inner end part and the lower end part of the upper end part, the powerful magnetic ring is connected in the through hole of the lower end part through a spiral spring, and the inner diameters of the spiral spring and the powerful magnetic ring are larger than the inner diameter of the through hole. According to the invention, through the design of the through holes, nuts on bolts with different lengths can be screwed, and the nuts can be adsorbed in the screwing process, so that the reliability of screwing is ensured; the mounting groove that the side set up and ordinary handle phase-match can twist the nut at the coplanar, stirs the ring and can slide from top to bottom along the solid fixed cylinder, and then adapts to different operating space's use restriction, can twist the nut soon in telescopic top.)

1. Magnetic force telescope tube, its characterized in that: the magnetic flux-cored wire comprises a sleeve (1) and a strong magnetic ring (2) arranged in the sleeve (1), wherein the sleeve (1) comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle (9), through holes (10) which are communicated up and down are formed in the upper end part and the lower end part, the strong magnetic ring (2) is connected in the through holes (10) at the lower end part through spiral springs (8), and the inner diameters of the spiral springs (8) and the strong magnetic ring (2) are larger than the inner diameter of the through holes (10).

2. The magnetic telescoping sleeve of claim 1, wherein: an inner cylinder (3) vertically corresponding to the through hole (10) is arranged in the lower end part of the screwing nut, the lower end part is divided into an inner hole (4) and an outer annular groove (5) by the inner cylinder (3), the inner diameter of the inner hole (4) is the same as the diameter of the through hole (10), and the height between the lower end face of the inner cylinder (3) and the lower port of the through hole (10) is larger than the height of the nut to be screwed.

3. The magnetic telescoping sleeve of claim 2, wherein: a mounting ring (6) is arranged between the outer wall of the inner barrel (3) and the inner wall of the outer hole (5), the mounting ring (6) is provided with fixing holes (6-1) which are closely adjacent, and a telescopic rod (7) is fixedly clamped in the fixing holes (6-1).

4. The magnetic telescoping sleeve of claim 3, wherein: the telescopic rod (7) comprises a prismatic rod (7-2) fixedly connected with the fixing hole (6-1) in a clamping mode, a telescopic sleeve (7-1) is connected below the prismatic rod (7-2), a thin spring (7-3) axially supporting the prismatic rod (7-2) is arranged in the telescopic sleeve (7-1), and when the thin spring (7-3) is compressed, the sum of the elastic force of each thin spring (7-3) is smaller than the adsorption force of the powerful magnetic ring (2).

5. The magnetic telescoping sleeve of claim 3, wherein: the telescopic rod (7) comprises a telescopic sleeve fixedly connected with the fixing hole in a clamping mode, a prismatic rod extending downwards is inserted in the telescopic sleeve, thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

6. The magnetic telescopic sleeve according to any one of claims 1 to 5, wherein: the side wall of the lower end part of the sleeve (1) is provided with an installation groove (1-1) for connecting a common handle.

7. The magnetic telescoping sleeve of claim 6, wherein: the upper end of the sleeve (1) comprises a fixed barrel (1-2), an axial limiting groove (1-3) is formed in the side wall of the fixed barrel (1-2), and the rotating handle (9) comprises a rotating rod (11) which is circumferentially clamped with the limiting groove (1-3).

8. The magnetic telescoping sleeve of claim 7, wherein: at least two limiting grooves (1-3) are arranged, one end of the rotating rod (11) is circumferentially clamped with the limiting grooves (1-3), and the other end of the rotating rod is connected with a stirring ring (12).

Technical Field

The invention relates to the technical field of socket wrenches, in particular to a magnetic telescopic sleeve used in line maintenance.

Background

The socket wrench is composed of a plurality of sockets with hexagonal holes or dodecagonal holes, a handle, a connecting rod and other accessories, and is particularly suitable for screwing bolts or nuts with very narrow or deep recesses. The socket wrench is mainly applied to the nut end or the bolt end which is completely lower than the connected surface, and the diameter of the concave hole can not be used for an open end wrench or an adjustable wrench and a box spanner; in addition, due to the space limitation of the bolt pieces, the nut can only be screwed by using a socket wrench.

However, when the nut is screwed on the longer bolt, the sleeve of the existing socket wrench, the connecting rod and the handle are positioned on the same axis, and one end of the sleeve is closed when the sleeve works, so that the nut at the bottom of the longer bolt cannot be screwed; even if the sleeve is lengthened, the use requirement cannot be completely met, the nut is screwed only by the length of the inner hole of the sleeve, and the nut is further screwed by the lengthened sleeve, so that the stability is lacked.

In addition, the shape and size specification of the nut are various, and when the traditional socket wrench is used, a socket with different shape and size specification is required to be equipped, so that the cost is high; in addition, different sleeves and nuts must be compared during use, and matched sleeve head wrenches are selected, so that serious influence is brought to actual use and working efficiency. Although the prior art has the universal sleeve, the prior art still cannot meet the screwing of the bottom nut of the long bolt, and the nut cannot be firmly combined with the universal sleeve in the screwing process.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a magnetic telescopic sleeve, which solves the technical problem that the existing sleeve wrench cannot screw a nut at the bottom of a long bolt.

The technical scheme of the invention is realized as follows: the magnetic telescopic sleeve comprises a sleeve and a powerful magnetic ring arranged in the sleeve, the sleeve comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle, through holes which are communicated up and down are formed in the upper end part and the lower end part, the powerful magnetic ring is connected in the through hole of the lower end part through a spiral spring, and the inner diameters of the spiral spring and the powerful magnetic ring are larger than the inner diameter of the through hole.

Furthermore, an inner cylinder vertically corresponding to the through hole is arranged in the lower end part, the inner cylinder divides the lower end part into an inner hole and an outer annular groove, the inner diameter of the inner hole is the same as the diameter of the through hole, and the height between the lower end face of the inner cylinder and the lower port of the through hole is larger than the height of the nut to be screwed.

Furthermore, a mounting ring is arranged between the outer wall of the inner barrel and the inner wall of the outer hole, the mounting ring is provided with fixing holes which are closely adjacent, and the telescopic rods are fixedly clamped in the fixing holes.

Furthermore, the telescopic rod comprises a prismatic rod which is fixedly connected with the fixing hole in a clamping mode, a telescopic sleeve is connected below the prismatic rod, thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

Or the telescopic rod comprises a telescopic sleeve fixedly connected with the fixing hole in a clamping mode, the prismatic rod extending downwards is inserted in the telescopic sleeve, the thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

Furthermore, the side wall of the lower end part of the sleeve is provided with an installation groove for connecting a common handle.

Further, telescopic upper end is including fixed section of thick bamboo, has seted up axial spacing groove on the lateral wall of fixed section of thick bamboo, the swing handle includes the rotary rod with spacing groove circumference joint.

Furthermore, the limiting groove is provided with two at least, and one end and limiting groove circumference joint, the other end of rotary rod are connected with and dial the ring.

The invention has the beneficial effects that: through the design of the through holes, nuts on bolts with different lengths can be screwed, and the nuts can be adsorbed in the screwing process, so that the screwing reliability is ensured; the mounting groove arranged on the side face is matched with a common handle, the nut can be screwed on the same plane, the toggle ring can slide up and down along the fixed cylinder, the use limitation of different operation spaces is further adapted, and the nut can be screwed above the sleeve; the telescopic rod is pressed against the upper end face of the nut, the telescopic rod which is opposite to the nut up and down is compressed, and then the peripheral telescopic rod clamps the nut, so that different clamping shapes can be constructed, and the nut can be matched with nuts of different shapes and different specifications; because the strong magnetic ring and the lower port of the sleeve are separated by a certain distance, the sleeve can be driven to press the nut under the magnetic absorption of the strong magnetic ring, and then the telescopic rod can be automatically compressed to construct a clamping groove matched with the nut, and the telescopic rod is not required to be compressed by manually pressing the sleeve.

Drawings

In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a top view of the mounting ring of FIG. 1;

fig. 4 is a schematic structural view of the telescopic rod in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.