TW202015862A - Two-way retractable socket - Google Patents

Abstract

Two-way retractable socket is provided, including: an outer sleeve, having two spline holes, each of the two spline holes including a plurality of ribs circumferentially arranged in intervals and a plurality of grooves circumferentially alternatively arranged with the plurality of ribs, the plurality of grooves configured for receiving respective driving heads of objects with different sizes; two inner sleeves, each of the two inner sleeves including a hexagonal hole and a plurality of teeth arranged around the hexagonal hole and configured to be slidably received within the plurality of grooves; two elastic members, respectively received in the two spline holes and biasing the two inner sleeves outwardly.

Description

Bidirectional telescopic sleeve

The invention relates to a sleeve, in particular to a bidirectional telescopic sleeve.

For assembly and disassembly of the device, the sleeve is one of the most commonly used tools. The sleeve is used to drive the locking members (such as screws, bolts, nuts) to rotate, so as to integrate the components into one or to perform disassembly and disassembly operations. Usually the sleeve will be used in conjunction with a driving tool, for example, combined with a wrench to increase the force arm to facilitate the generation of larger torque to drive the locking member to rotate, or combined with a pneumatic/electric tool to reduce the physical exertion of the operator.

However, the conventional sleeves are only designed to drive a single-size fastener. Although most commonly used fasteners have a unified standard, there are still a variety of sizes and appearances for components of different sizes. Therefore, in order to correspond to different sizes of fasteners, it is necessary to prepare a variety of sleeves, which are heavy, expensive, and require more storage space, and the operator needs to replace the sleeve all the time, which is inconvenient for assembly/disassembly, there is an urgent need The shortcomings of improvement.

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

The main purpose of the present invention is to provide a two-way telescopic sleeve with multiple sleeve sizes.

In order to achieve the above object, the present invention provides a bidirectional telescopic sleeve, which includes: a jacket with two tooth holes, each of which is provided with a plurality of circumferentially spaced tooth ribs, and a plurality of circumferential directions and the plurality of Clamping slots with alternately arranged ribs, the plurality of clamping slots can be used to sleeve driven heads of objects of various sizes; two inner sleeves, each of the inner sleeves has a hexagonal hole and a plurality of sliding holes arranged around the hexagonal hole The clamping teeth in the plurality of clamping slots; the two elastic members are respectively accommodated in the two tooth holes and spring outward against the two inner sleeves.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and 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 tooth holes 11. Each tooth hole 11 is provided with a plurality of circumferentially spaced tooth ribs 111 and a plurality of circumferentially arranged clamping slots 112 alternately arranged with the plurality of tooth ribs 111. The card slot 112 can be used to fit driven heads of objects of various sizes. Each inner sleeve 20 has a hexagonal hole 21 and a plurality of clamping teeth 22 disposed around the hexagonal hole 21 and slidingly disposed in the plurality of clamping slots 112. The two elastic members 30 are respectively accommodated in the two tooth holes 11 and spring outward against the two inner sleeves 20. Preferably, the sizes of the two tooth holes 11 are different, and the sizes of the hexagonal holes 21 of the two inner sleeves 20 are different. In this way, the double heads have a variety of socket sizes, which can be applied to 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, in this embodiment is 12, which can be divided into arrays at equal angles. Each group of card slots 112 defines different sleeve sizes and can be applied to objects of different sizes and different angles. Preferably, the two-tooth holes 11 have different sizes of slots, which are suitable for more sizes. The casing 10 further includes two square holes 12 disposed between the two tooth holes 11, where the two square holes 12 communicate with each other, and at least one of the square holes 12 is further provided with at least one locking recess 121 on the wall of the hole. The square hole 12 can be used for assembling the driving head of a driving tool (manual, pneumatic or electric), and the locking recess 121 can be used for clamping by the elastic card mechanism of the driving head of the driving tool. A shoulder surface 122 facing one 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 locking recess 121 can penetrate the outer casing 10 in a radial direction, and a rod member can be inserted for turning. The locking recess 121 can be plugged with a plug member 123 (for example, a screw is locked) to prevent foreign objects from invading.

The cooperation of the plurality of clamping grooves 112 and the plurality of tooth ribs 111 can stably assemble the outer casing 10 and the inner sleeve 20, effectively disperse stress, and make the inner sleeve 20 operate accurately. The number of the tooth ribs 111 and the locking grooves 112 is preferably the same, but the number of the tooth ribs 111 may also be less than the number of the locking grooves 112. In a radial section of the outer casing 10, each of the tooth ribs 111 includes two lower inclined sides 113 tapering toward a center of the outer casing 10, and two are connected by the tapered extensions of the two lower inclined 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 low oblique side 113, the low oblique side 113 can be used for stable insertion of the inserted object, and the upper oblique side 114 can prevent damage to the inserted object Corner. A tooth groove 221 is defined between any two adjacent clamping teeth 22, and in a radial section of each inner sleeve 20, the contour of each tooth groove 221 corresponds to one of the tooth ribs 111, the upper portion and the lower portion The corresponding toothed profiles of the inclined 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 protrudingly provided in each of the perforations 11 (can be additionally provided or integrally formed) at least one blocking protrusion 13, and each inner sleeve 20 is provided with at least one blocking in the axial direction by the at least one blocking protrusion 13 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 the present embodiment, the at least one blocking protrusion 13 penetrates the outer casing 10 and is limited by a hoop member 40 surrounding the outer casing 10. The hoop member 40 is, for example but not limited to, a coil spring, a rigid or an elastic sheet. Preferably, the hoop member 40 is looped in a ring groove 14 of the outer casing 10, the hoop member 40 is stable and the outer surface of the outer casing 10 is flat.

Each inner sleeve 20 further includes a radially inner flange 23 abutting one of the elastic members 30, which can smoothly push against the inner sleeve 20, and the radially inner flange 23 also provides stable and accurate positioning of the inserted object Effective working position.

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

1: Two-way telescopic sleeve 10: Outer jacket 11: Perforated hole 111: Tooth rib 112: Slot 113: Lower oblique side 114: Upper oblique side 12: Square hole 121: Recess 122: Shoulder surface 123: Plug 13: Retaining convex 14: ring groove 20: inner sleeve 21: hexagonal hole 22: clamping tooth 221: tooth groove 222: clamping convex 23: radial inner flange 30: elastic member 40: hoop member 50, 60: hexagon bolt

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 invention. 3 is a cross-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.

1: Two-way telescopic sleeve

10: coat

20: inner sleeve

40: hoop

Claims (10)

A bidirectional telescopic sleeve includes: an outer sleeve with two tooth holes, each of which is provided with a plurality of circumferentially spaced tooth ribs, and a plurality of circumferentially arranged clamping slots alternately arranged with the plurality of tooth ribs, The plurality of clamping slots can be used to sleeve driven heads of objects of multiple sizes; two inner sleeves, each of the inner sleeves has a hexagonal hole and a plurality of sliding slots arranged around the hexagonal hole and slidingly arranged in the plurality of clamping slots Clamping teeth; two elastic pieces respectively accommodated in the two tooth holes and springing outward against the two inner sleeves. The bidirectional telescopic sleeve according to claim 1, wherein the number of the plurality of clamping slots is greater than 6. The bidirectional telescopic sleeve according to claim 1, wherein the outer sleeve further includes two square holes disposed between the two tooth holes, and each of the square holes and one of the tooth holes forms a surface facing one of the inner sleeves In the shoulder surface, each of the elastic members abuts one of the shoulder surfaces. The bidirectional telescopic sleeve according to claim 3, wherein at least one hole wall of the square hole is further provided with at least one locking recess. The two-way telescopic sleeve according to claim 1, wherein in a radial section of the outer sleeve, each of the tooth ribs includes two oblique sides of a lower portion tapering toward a center of the outer sleeve, and two from the two lower The oblique side of the part is tapered and extended to connect with the upper oblique side, the absolute value of the slope of the upper oblique side is smaller than the absolute value of the slope of the low oblique side. The bidirectional telescopic sleeve according to claim 5, wherein a groove is defined between any two adjacent teeth, and in a radial section of each inner sleeve, the contour of each groove and one of the ribs Corresponding. The bidirectional telescopic sleeve according to claim 1, wherein each of the inner sleeves further includes a radially inner flange abutting one of the elastic members. The bidirectional telescopic sleeve according to any one of claims 1 to 7, wherein the outer sleeve is additionally 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 one axial direction which can be used by the at least one A convex block to stop the convex. The two-way telescopic sleeve according to claim 8, wherein the at least one stopper projects through the outer sleeve and is limited by a hoop surrounding the outer sleeve. The two-way telescopic sleeve according to claim 9, wherein the hoop member ring is provided in a ring groove of the outer sleeve.

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