CN2116560U

CN2116560U - Box spanner for nut of long screw arbor

Info

Publication number: CN2116560U
Application number: CN 92205324
Authority: CN
Inventors: 游祥镇
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-28
Filing date: 1992-03-28
Publication date: 1992-09-23

Abstract

The utility model relates to a sleeve barrel spanner, which can screw and turn the screw cap on the screw and is mainly a main body of the sleeve barrel spanner with long plate shape. The outer ring surface of the sleeve barrel body whose one end has the design of the inner hexagon socket is provided with a groove ring in advance, the springs used for the sleeving of the two ring round springs, and the adjacent middle of the two springs is sleeved with a steel ball. Matching with the hexagon socket, one side surface is provided with a perforation in advance which can make the assembling steel ball go out. Each side surface of the hexagon prism head of the matching sleeve barrel is provided with a concave arc groove correspondingly for the clamping and combining positioning in the sleeving combination. So the utility model can improve the defect of the inconvenient positioning of the using efficaciously.

Description

Box spanner for nut of long screw arbor

The utility model relates to a kind of box spanner of pulling the long bolt upper cap nut that revolves, and this spanner is a kind ofly to prevent that fit from using and drop out, and the safety sleeve spanner that makes things convenient for diverse location to manipulate.

Make and design by general common box spanner, roughly as shown in Figure 3, establish a transfer 31 in wrench body 3 one ends, putting operation for the lock of different directions selects for use, and be provided with the sleeve parent 32 of inner hexagonal hole 33 in the other end, mainly provide a sleeve 4 to do mutual insert group cooperation with symmetrical hexagonal column cap 41 designs, and sleeve 4 is provided with a square hole 42 in the inside of hexagonal column cap 41 ends, the other end then is set as polygonal hole 43, two hole bodies are the design that runs through mutually, use in order to the different lock dresses that wears to be provided; Though yet above-mentioned global design has the easy purpose that 4 assemblings of conversion sleeve are used, in use often because 41 on the hexagonal column cap of the hex hole 33 of sleeve parent 32 and sleeve 4 only depends on the mutual fit friction location of each limit face, during use, then often have the fit loose or dislocation, inconvenient locking operation situation produces, so just there is the people that it is modified into as shown in Figure 4 product, on each limit face of hex hole 33, be arranged with identical concave arc groove 34, on one of them limit face of the hexagonal column cap 41 of sleeve 4, then be provided with a slotted eye 44, for spring of suit in the hole 45 and steel ball 46, make steel ball 46 be subjected to the release of spring 45, can protrude when being used in combination with each limit face on concave arc groove 34 engage mutually, effectively prevent to make up the loosening situation that drops and take place; This architecture advances, though tool prevents the use shortcoming of loose or dislocation, its whole cost increases extremely many relatively, and also needs more man-hour and technology when assembly, with regard to economic point of view, further necessity of improvement is arranged in fact again.

The shortcoming that is produced when using in view of general common box spanner structure, after concentrated research improvement, finally develop the box spanner of pulling the long bolt upper cap nut that revolves of the present utility model, only need are established on the face of wherein one side of the hex hole of sleeve parent and are adorned a steel ball by the spring location, the sleeve hexagon prism that uses with respect to fit is established on the face in front and is stayed relative concave arc groove, can reach identical engaging purpose.

Main purpose of the present utility model is to provide a kind of with the corresponding concave arc groove mutual snap-on design of single steel ball with each limit face of hexagonal column cap, whole manufacturing cost is significantly reduced, and make whole manufacturing degree of progress speed, thereby reach economical and practical purpose.

Primary structure design of the present utility model includes a wrench body, the members such as sleeve parent that the spanner two ends are respectively equipped with transfer and use for sleeve set; It is characterized in that: the Lower Half outer ring surface of sleeve parent is established and is stayed a recessed concave ring groove, bottom land is provided with a cone-type piercer to be run through mutually with wherein one side face of hex hole, and on cone-type piercer a sheathed steel ball, and establish a coil spring in the concave ring groove outside the steel ball, steel ball is protruded to the hex hole inner edge; Each limit face relative position of the hexagonal column cap of another sleeve is provided with the concave arc groove of circumferential edge face, engages mutually with steel ball during for suit.

For further specifying structure of the present utility model, feature and practical purpose thereof are described in detail as follows by means of accompanying drawing:

Fig. 1 is a schematic exploded perspective view of the present utility model;

Fig. 2 is a combination generalized section of the present utility model;

Fig. 3 is the schematic appearance of general common box spanner;

Fig. 4 is general common box spanner improvement back second generation reference diagram.

The box spanner of pulling the long bolt upper cap nut that revolves of the present utility model, please cooperate and consult Fig. 1, shown in 2, the overall structure of wrench body 1 is roughly similar to general common box spanner outward appearance, mainly be the improvement design of the sleeve parent 11 of an end tool inner hexagonal hole 12 designs, with the sleeve parent 11 of middle word shape in the outer ring surface that turns to the below of ring gear 13 by the centre, be roughly the Lower Half position of inner hexagonal hole 12, be preset with a recessed concave ring groove 14, and wherein on one side establish the perforation 15 of staying a bell shape on the face in what concave ring groove 14 was aligned with hex hole 12, this cone-type piercer 15 is disposed and is adorned a steel ball 16, and 15 apertures of boring a hole are slightly less than steel ball 16 diameters of suit, make the steel ball 16 can be by dropping out in the hole, in addition in outer concave annular groove 14 inside of steel ball 16, then be equipped with around spring 17 frames of round and live steel ball 16, usual steel ball 16 is promptly pushed by spring 17 and is protruded from perforation 15 outsides, also is hex hole 12 inner edges of sleeve parent 11.

Assemble the sleeve body 2 of usefulness in addition with respect to fit, except that having the hexagonal column cap 21 that wears mutually, run through in hexagonal column cap 21 central authorities and to be provided with a square opening 22, communicate with other end polygonal hole 23, and in steel ball 16 positions that each limit face of hexagonal column cap 21 protrudes on respect to sleeve parent 11 inner hexagonal holes 12 limit faces, respectively establish and stay recessed together concave arc groove 24 around hexagonal column cap 21, hexagonal column cap 21 1 ends for sleeve 2, wear in the hex hole 12 of sleeve parent 11 time, can engage the location mutually with the steel ball 16 that protrudes, prevent to drop accidentally after the assembling; And when wearing assembling, hexagonal column cap 21 is when inside insert group, promptly can form the effect of inwardly pushing to the steel ball 16 that protrudes, steel ball 16 is about to thrust and is communicated on the coil spring 17 that interior sash lives, take advantage of a situation spring 17 domains are to a side inside and push, and when insert group arrived relative concave arc groove 24 positions, spring 17 was pushed the formation counter-force and will be rebounded rapidly, thereby reached the assembling purpose of engaging location.

By improvement design of the present utility model, because the quantity of steel ball 16 is reduced, the assembling design of spring 17 is also only with the design of two ring types, whole assembling is simplified relatively, make the firmer practicality of whole assembling, and because the minimizing of member, the cost of whole making is reduced, and when fit uses, because only have a steel ball 16 to protrude, required thrust does not need too big relatively yet, thereby can make the application of force of operation lighter, and the direct making that concave arc groove 24 is set on the hexagonal column cap 21 limit faces of sleeve body 2, quite easy, thus can make the making of whole spanner simpler and easy, and cost of manufacture significantly lowers, reach economical and practical practical purpose, more can make the practical effect of box spanner that further performance is arranged.

Claims

1, a kind of box spanner of pulling the long bolt upper cap nut that revolves includes a wrench body, the members such as sleeve parent that the spanner two ends are arranged with transfer and use for sleeve set; It is characterized in that: the Lower Half outer ring surface of sleeve parent is established and is stayed a recessed concave ring groove, bottom land is provided with a cone-type piercer to be run through mutually with wherein one side face of hex hole, and on cone-type piercer a sheathed steel ball, and establish a coil spring in the concave ring groove outside the steel ball, steel ball is protruded to the hex hole inner edge; Each limit face relative position of the hexagonal column cap of another sleeve is provided with the concave arc groove of circumferential edge face, engages mutually with steel ball during for suit.