TWI665057B - Two-way retractable socket - Google Patents

Abstract

The invention relates to a two-way telescopic sleeve, which includes a jacket with two tooth holes, each of which is provided with a plurality of ribs spaced in the circumferential direction, and a plurality of ribs arranged alternately with the plurality of ribs in the circumferential direction. Card slots, which can be used to drive driven heads of objects of various sizes; two inner sleeves, each of which has a hexagonal hole and a plurality of holes arranged around the hexagonal hole and slidably disposed on the plurality of cards The clamping teeth in the slot; two elastic members are respectively accommodated in the two tooth holes and spring outwardly against the two inner sleeves.

Description

Bidirectional telescopic sleeve

The present invention relates to a sleeve, and more particularly to a two-way telescopic sleeve.

The sleeve is one of the most commonly used tools for device assembly and disassembly. The sleeve is used to drive the fasteners (such as screws, bolts, and nuts) to rotate, so as to assemble the components together or disassemble and disassemble them. Generally, the sleeve is used in conjunction with a driving tool, for example, it is combined with a wrench to increase the force arm to facilitate the generation of a large torque to drive the rotation of the fastener, or it is combined with a pneumatic / electrical tool to reduce the physical consumption of the operator.

However, it is generally known that sleeves are only designed to drive a single-size lock. Although most commonly used locks have uniform standards, there are still multiple sizes and appearances for components of different sizes. Therefore, in order to correspond to different sizes of locks, it is necessary to prepare a variety of sleeves, which are heavy and expensive, and require more storage space, and the operator needs to replace the sleeves all the time, causing inconvenience of assembly / disassembly. The disadvantages of improvement.

Therefore, it is necessary to provide a novel and progressive bi-directional telescopic sleeve to solve the above problems.

The main object of the present invention is to provide a two-way telescopic sleeve, which has various sleeve sizes.

To achieve the above object, the present invention provides a two-way telescopic sleeve, comprising: a jacket having two perforations, each of which is provided with a plurality of ribs spaced in the circumferential direction, and a plurality of peripherally spaced with the plurality of ribs; The ribs are alternately arranged with a plurality of card slots, and the plurality of card slots can be used to drive driven heads of objects of various sizes; two inner sleeves, each of the inner sleeves having a hexagonal hole and a plurality of sliding holes arranged around the hexagonal hole. Two teeth are respectively received in the two teeth holes and spring toward the two inner sleeves.

1‧‧‧Two-way telescopic sleeve

10‧‧‧ coat

13‧‧‧Convex

14‧‧‧ ring groove

11‧‧‧ perforation

111‧‧‧ tooth rib

112‧‧‧Card Slot

113‧‧‧Lower oblique side

114‧‧‧ Upper oblique side

12‧‧‧ square hole

121‧‧‧ Card Concave

122‧‧‧ Shoulder

123‧‧‧plug

20‧‧‧ inner sleeve

21‧‧‧Hex hole

22‧‧‧Clamp

221‧‧‧Gully

222‧‧‧Ka convex

23‧‧‧Radial inner flange

30‧‧‧Elastic piece

40‧‧‧Hoop

50,60‧‧‧Hex bolts

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a preferred embodiment of the present invention.

FIG. 3 is a sectional view of a preferred embodiment of the present invention.

FIG. 4 is a side view and a partially enlarged view of a preferred embodiment of the present invention.

5 to 6 are application schematic diagrams of a preferred embodiment of the present invention.

The following only illustrates the possible implementation aspects of the present invention by way of examples, but is not intended to limit the scope of the present invention to be protected, which will be described first.

Please refer to FIGS. 1 to 4, which show a preferred embodiment of the present invention. The bidirectional telescopic sleeve 1 of the present invention includes an outer sleeve 10, two inner sleeves 20, and two elastic members 30.

The outer casing 10 has two perforations 11. Each of the perforations 11 is provided with a plurality of ribs 111 spaced in the circumferential direction, and a plurality of clamping grooves 112 arranged alternately with the plurality of ribs 111 in the circumferential direction. The slot 112 can be used to drive a driven head for objects of various sizes. Each inner sleeve 20 has a hexagonal hole 21 and a plurality of clamping teeth 22 arranged around the hexagonal hole 21 and slidably disposed in the plurality of clamping grooves 112. The two elastic members 30 are respectively accommodated in the two toothed holes 11 and spring toward the openings at the ends of the two toothed holes 11 to spring outward against the two inner sleeves 20 respectively. Preferably, the sizes of the two toothed holes 11 are different, and the sizes of the hexagonal holes 21 of the two inner sleeves 20 are different. As a result, both heads have multiple sleeve sizes, which can be used for objects of various sizes, such as nuts, bolts and other fasteners or the like.

The number of the plurality of card slots 112 is greater than 6, which is 12 in this embodiment, and can be divided into arrays at equal angles. Each group of card slots 112 defines different socket sizes and can be used for objects of different sizes and different angles. Preferably, the two-toothed holes 11 have different sets of card slot groups, and the applicable sizes are more. The outer jacket 10 further includes two square holes 12 provided between the two toothed holes 11. Here, the two square holes 12 communicate with each other, and at least one of the square holes 12 is provided with at least one locking recess 121 on the wall of the hole. The square hole 12 can be used for assembling a driving head of a driving tool (manual, pneumatic or electric), and the latching recess 121 can be used for snapping the spring card mechanism of the driving head of the driving tool. A shoulder surface 122 facing each of the inner sleeves 20 is formed between each of the square holes 12 and one of the tooth holes 11, and each of the elastic members 30 abuts on one of the shoulder surfaces 122. The latching recess 121 can pass through the outer casing 10 in a radial direction, and can be inserted by a rod for turning. A plug member 123 (for example, a screw) can be plugged in the locking recess 121 to prevent foreign objects from invading.

The cooperation of the plurality of clamping grooves 112 and the plurality of tooth ribs 111 can stably connect the outer sleeve 10 and the inner sleeve 20, effectively disperse stress, and make the inner sleeve 20 move accurately. The number of the ribs 111 and the latching grooves 112 is preferably the same, but the number of the ribs 111 may be less than the number of the latching grooves 112. In a radial cross section of the outer casing 10, each of the ribs 111 includes two lower slanted sides 113 that are tapered toward one center of the outer sheath 10, and two are gradually extended and connected by the two lower slanted sides 113, respectively. The upper oblique side 114, the absolute value of the slope of the upper oblique side 114 is smaller than the absolute value of the slope of the lower oblique side 113, and the lower oblique side 113 can be used for stable abutment of the inserted object. The upper beveled side 114 prevents damage to the corners of the inserted object. A tooth groove 221 is defined between any two adjacent clamping teeth 22. In a radial section of each of the inner sleeves 20, the profile of each tooth groove 221 corresponds to one of the tooth ribs 111, and the upper and lower portions The corresponding toothed profiles of the oblique sides 113, 114 and the tooth groove 221 effectively increase the structural stability, prevent slippage, and increase the contact area and torque transmission in the direction of rotation.

The outer sleeve 10 is provided with at least one blocking protrusion 13 (can be provided or integrally formed) in each of the perforations 11, and each inner sleeve 20 is provided with at least one blocking protrusion 13 in an axial direction. The locking protrusion 222 prevents the inner sleeve 20 from coming out. The blocking protrusion 13 may be a screw member locked to the outer sleeve 10, but may also be a flange, a bead, a pin, a hook, a rivet, or the like. In this embodiment, the at least one blocking protrusion 13 is passed through the casing 10 and is limited by a hoop member 40 surrounding the casing 10. The hoop member 40 is, for example, but not limited to, a coil spring, a rigid or elastic sheet body. Preferably, the hoop member 40 is annularly disposed in a ring groove 14 of the outer casing 10, the hoop member 40 is stable in position, and the outer surface of the outer casing 10 is flat.

Each of the inner sleeves 20 further includes a radial inner flange 23 abutting on one of the elastic members 30, which can smoothly push against the inner sleeve 20. The radial inner flange 23 also provides stable and accurate positioning of the inserted object. Effectiveness of work position.

In use, for example, the inner sleeve 20 can be set on a hexagonal bolt 50 or nut (see Figure 5). When the size of the hexagonal bolt 50 or nut is larger than the hexagonal hole of the inner sleeve 20, press it in. In the tooth hole (see FIG. 6), the hexagon bolt 60 or the nut is driven by the outer sleeve 10.

Claims (10)

A bidirectional telescopic sleeve includes: a jacket having two perforations, each of which is provided with a plurality of ribs spaced in the circumferential direction, and a plurality of clamping grooves arranged alternately with the plurality of ribs in the circumferential direction, The plurality of card slots can be used to drive driven heads of objects of various sizes; two inner sleeves, each of which has a hexagonal hole and a plurality of sliding holes arranged around the hexagonal hole and slidably disposed in the plurality of card slots. Clamping teeth; two elastic pieces are respectively accommodated in the two tooth holes and respectively open toward the ends of the two tooth holes to spring outward against the two inner sleeves. The bidirectional telescopic sleeve according to claim 1, wherein the number of the plurality of card slots is greater than six. The bidirectional telescopic sleeve according to claim 1, wherein the outer sleeve further includes two square holes provided between the two perforations, and each of the square holes and one of the perforations form a surface facing one of the inner sleeves. The shoulder surface, each of the elastic members abuts on one of the shoulder surfaces. The bidirectional telescopic sleeve according to claim 3, wherein at least one of the square holes is provided with at least one snap recess on the wall of the hole. The two-way telescopic sleeve according to claim 1, wherein in one radial section of the jacket, each of the ribs includes two oblique sides that are gradually tapered toward a center of the jacket, and two are respectively formed by the two lower sections. The oblique side of the lower part gradually extends to the oblique side of the upper part, and the absolute value of the slope of the upper oblique side is smaller than the absolute value of the slope of the lower oblique side. The bidirectional telescopic sleeve according to claim 5, wherein a tooth groove is defined between any two adjacent clamping teeth, and in a radial section of each of the inner sleeves, the profile of each tooth groove and one of the ribs Corresponding. The bidirectional telescopic sleeve according to claim 1, wherein each of the inner sleeves further includes a radial inner flange abutting on one of the elastic members. The bidirectional telescopic sleeve according to any one of claims 1 to 7, wherein the outer sleeve is provided with at least one blocking protrusion in each of the perforations, and each of the inner sleeves is provided with at least one in an axial direction which can be blocked by the at least one protrusion. The first stop is convex. The bidirectional telescopic sleeve according to claim 8, wherein the at least one stop is protruding through the outer sleeve and is restricted by a hoop member surrounding the outer sleeve. The bi-directional telescopic sleeve according to claim 9, wherein the hoop is looped in a ring groove of the outer sleeve.