TWI773283B - Tool connecting rod - Google Patents

Abstract

A tool connecting rod is provided, including: a main body, including a driving portion and a assembling portion relative to the driving portion, the assembling portion having an assembling hole extending in an axial direction; a sleeve member, non-rotatably disposed on the assembling portion and including at least one sleeving hole which is configured to be connected with a connecting member; and a magnetic mechanism, disposed within the assembling hole, including a magnetic member penetrating into the sleeve member and an elastic member abutted against and between the main body and the magnetic member, in a circumferential direction of the magnetic member, a first gap being defined between the sleeve member and the magnetic member so that the sleeve member and the magnetic member are movable radially relative to each other.

Description

tool post

The present invention relates to a tool adaptor.

The conventional tool adaptor 100 (please refer to FIG. 9 and FIG. 10 ) includes a rod body 101 and a sleeve 102 sleeved on the rod body 101 in a non-rotatable manner. Not limited to screwdriver bits, screws and nuts, etc.), one end of the rod body 101 can be assembled with a driving tool to drive the tool rod 100 to rotate, and the other end passes through the sleeve 102 and is provided with a magnetic element 103 to adsorb the connector 200 .

However, the radial dimensions of the rod body 101 and the sleeve 102 generally correspond to each other and cannot be offset from each other in the radial direction. Therefore, when the tool rod 100 is driven to drive the adapter 200 to rotate, the magnetic member 103 is easy to The connector 200 is broken due to impact and torsion, and its durability is poor. In addition, when the rod body 101 and the sleeve 102 are assembled, the relative positions of the magnetic member 103 and the sleeve 102 are easily changed due to production tolerances. For example, when the machining tolerance of the rod body 101 is too short or the machining tolerance of the sleeve 102 is too long, the distance between the magnetic element 103 protruding from a socket hole of the sleeve 102 is too short, and the magnetic element 103 and the sleeve 102 are too short. A gap 104 is generated between the connecting pieces 200, as shown in FIG. 9, which is easy to cause insufficient suction force of the magnetic piece 103 to effectively absorb the connecting piece 200; when the machining tolerance of the rod body 101 is too long or the machining tolerance of the sleeve 102 is too large In a short time, the distance between the magnetic member 103 protruding from the socket hole is too long, the depth of the socket member 200 being inserted into the socket hole 104 is insufficient, and the end face of the socket member 200 and the sleeve 102 have a distance 105 and cannot abut each other By the way, as shown in FIG. 10 , it is easy to cause problems such as poor operation stability and force transmission efficiency, and the magnetic member 103 is easily broken due to excessive force. Therefore, the conventional tool adaptor 100 requires high dimensional accuracy during production, and the production cost is high.

Therefore, it is necessary to provide a novel and progressive tool adapter to solve the above problems.

The main purpose of the present invention is to provide a tool adaptor which is easy to produce and has good durability.

In order to achieve the above object, the present invention provides a tool connecting rod, comprising: a main body, including a driving part and an assembling part relative to the driving part, the assembling part has an assembling hole extending along an axial direction; A socket is provided on the assembling part in a non-rotatable manner and includes at least one socket for connecting a socket; and a magnetic attraction mechanism, which is arranged in the set hole, including a socket through which the socket is inserted. The magnetic attraction piece and an elastic piece axially abutting between the main body and the magnetic attraction piece, in a circumferential direction of the magnetic attraction piece, there is a first gap between the sleeve connection piece and the magnetic attraction piece so as to be able to Relative radial offset.

The following examples only illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 8 , which show a preferred embodiment of the present invention. The tool adaptor 1 of the present invention includes a main body 10 , a socket 20 and a magnetic attraction mechanism 30 .

The main body 10 includes a driving portion 11 and an assembling portion 12 opposite to the driving portion 11 . The assembling portion 12 has an assembling hole 121 extending along an axial direction A; The magnetic attraction mechanism 30 is disposed in the assembly hole 121 and includes a magnetic attraction member 31 ( 4, 5) and an elastic member 32 that is axially abutted between the main body 10 and the magnetic member 31, in a circumferential direction of the magnetic member 31, the socket member 20 and the magnetic member 31 There is a first gap G1 therebetween so as to be relatively radially offset. In this way, the elastic member 32 can keep the magnetic attraction member 31 moving toward the at least one set of holes 21 , and has a high tolerance for production tolerances and is easy to produce; and when the driving part 11 is driven to drive the connection When the member 2 rotates, the elastic member 32 and the first gap G1 allow the magnetic member 31 to be slightly offset and rotated relative to the socket member 20, which can effectively prevent the magnetic member 31 from being damaged by impact and twist, and is durable in use. good.

The driving part 11 can be connected to a pneumatic tool, an electric tool or a handle 3 (as shown in FIG. 8 ), etc., and has a wide range of applications; the connector 2 is, for example, but not limited to, a screw, a nut, a sleeve or a screwdriver bit, etc. . In detail, the socket member 20 further includes a through slot 22 communicating with each of the sleeve holes 21 , the through slot 22 is smaller in diameter than each of the sleeve holes 21 and between the groove peripheral wall of the through slot 22 and the magnetic attraction member 31 The first gap G1 is defined; in this embodiment, the first gap G1 extends annularly along the circumferential direction to allow the magnetic attraction member 31 to rotate and offset relative to the socket member 20 when subjected to force, and to move freely Viewed along the axis A, the first gap G1 is not less than 0.5 mm (preferably not more than 1 mm), so as to provide sufficient movement margin while maintaining stable assembly. The magnetic element 31 includes a magnetic end portion 311 . The magnetic end portion 311 at least partially protrudes from the through-slot 22 and is located in a hole 21 . The magnetic attraction force is large so as to attract the connector 2 . . In detail, the magnetic end portion 311 includes a groove 312 and a magnet 313 accommodated in the groove 312 . The magnet 313 preferably protrudes from the groove 312 in the axial direction, and the magnetic attraction effect is better. However, in the circumferential direction, the peripheral wall of the slot through the slot and the magnetic element can also be partially in contact to define one or more first gaps; the magnet can also be flush with the groove; the magnetic end is also The magnet may be directly connected without the groove.

The tool lever 1 further includes a latching mechanism 40 . The latching mechanism 40 includes at least one latching member 41 retractably protruding from an inner peripheral wall of the assembly portion 12 . An outer periphery of the socket member 20 At least one latching slot 24 that can be latched with the at least one latching member 41 is recessed in the wall, so that the socket member 20 and the assembling portion 12 can be detachably assembled. In the present embodiment, a ring groove 124 is recessed on an outer peripheral wall of the connecting portion 12 , and at least one through hole 125 communicating with the connecting hole 121 is drilled through the bottom of the groove 124 . Set in one of the through holes 125 , the latching mechanism 40 further includes a resilient member 42 accommodated in the annular groove 124 and pushing the at least one latching member 41 radially toward the set hole 121 , so that the At least one latching member 41 has a tendency to move radially toward the assembly hole 121 ; each latching member 41 is a steel ball, and the abutting member 42 is a set of coil springs set in the ring groove 124 , and the structure is simple And it is easy to process and assemble. In other embodiments, the latching mechanism may also be provided with a plurality of the latching pieces; the latching mechanism may also be provided with a plurality of the resilient pieces corresponding to one of the latching pieces; the at least one latching The element can also be a blocking protrusion that can selectively protrude from the set of connecting holes.

Referring to FIG. 4 to FIG. 7 , the socket member 20 is detachably inserted into the assembly hole 121 , the magnetic end portion 311 preferably protrudes from the assembly hole 121 axially, and the socket can be directly disassembled The member 20 is used to remove impurities (such as iron filings 4 ) adsorbed on the magnet 313 , as shown in FIG. 7 ; the at least one set of holes 21 includes a first set of holes 211 and A second set of holes 212, between the first set of holes 211 and the second set of holes 212 and the through-slot 22 are respectively provided with a shoulder 23a capable of engaging with the magnetic attraction piece 31 in the axial direction A , 23b, whereby the socket 20 can be inserted into the set of holes 121 by means of a shoulder 23a, 23b are in contact with the magnetic element 31 to maintain a distance between the magnetic element 31 protruding from one of the first set of holes 211 and the second set of holes 212. At least one of the shape, radial dimension and axial depth of the first sleeve hole 211 and the second sleeve hole 212 is different, so that the assembly direction of the sleeve 20 can be changed according to requirements to be suitable for different specifications. The connector 2.

Furthermore, a blocking portion 13 is radially protruded from the assembling portion 12 , and the magnetic element 31 includes a large-diameter section 314 , a small-diameter section 315 , and a connection between the large-diameter section 314 and the small-diameter section 315 . Between the shoulders 316, the large diameter section 314 is provided with a head 317 which can be locked with the stopper 13 in the axial direction A, the shoulder 316 and the sleeve 20 in the axial direction A Abutting on top of each other, thereby preventing the magnetic attraction piece 31 from coming out of the assembly hole 121, and the shoulder 316 can abut with one of the shoulders 23a, 23b of the socket piece 20 to limit the axial depth The at least one set of holes 21 is different. For example, when the socket 20 is inserted into the set of holes 121 with the end provided with the second hole 212 and the shoulder 23b abuts against the shoulder 316, the second hole 212 The larger the axial depth is, the larger the diameter section 314 can extend into the second hole 212 so that the magnetic end 311 protrudes from the first hole 211, as shown in FIG. 4 and FIG. 6 . When the socket 20 is inserted into the set hole 121 with one end provided with the first set hole 211, since the axial depth of the first set hole 211 is shallow, when the shoulder 23a and the When the shoulders 316 are in contact with each other, the head 317 compresses the elastic member 32 to axially move the magnetic member 31 toward one side of the driving portion 11 to prevent the magnetic end 311 from protruding over the second sleeve. The hole 212 can be used for the connector 2 with a larger height of the socket head, as shown in FIG. 5 . With the above structure, the relative positions of the components after assembly can be accurately matched and the length of the magnetic end portion 311 protruding into each of the holes 21 can be effectively limited, thereby reducing the influence of production tolerances and reducing production costs.

The large-diameter section 314 passes through the blocking portion 13, and in the circumferential direction, there is a second gap G2 between the large-diameter section 314 and the blocking portion 13, so as to keep the magnetic element 31 in the circumferential direction the activity margin to avoid component damage. In this embodiment, the assembly hole 121 includes a first section 122 adjacent to the driving portion 11 and a second section 123 communicating with the first section 122 and opening outward. The first section 122 has a smaller diameter of The second section 123 is also provided with the blocking portion 13 , the second section 123 accommodates the socket 20 ; the blocking portion 13 includes a limiting ring 131 that can axially interfere with the head 317 and a connection The assembling portion 12 and the engaging member 132 of the limiting ring 131 can be stably blocked and easy to assemble. Of course, the limiting ring can also be tightly connected with the assembling portion without the engaging member; the assembling portion can also be integrally protruded with the blocking portion.

Used part: 100: Tool Post 101: Rod body 102: Sleeve 103: Magnetic parts 104: Clearance 105: Spacing 200: Connector Part of the present invention: 1: Tool adaptor 2: Connector 3: Grip 4: Iron filings 10: Ontology 11: Drive Department 12: Assembly Department 121: Assembly hole 122: first paragraph 123: Second paragraph 124: Ring groove 125: Through hole 13: Stopper 131: Limit Ring 132: Clips 20: Socket 21: Set of holes 211: The first set of holes 212: Second set of holes 22: Grooving 23a, 23b: shoulder stop 24: Card slot 30: Magnetic suction mechanism 31: Magnetic parts 311: Magnetic end 312: Groove 313: Magnet 314: Large diameter section 315: Trail Section 316: Shoulder 317: Head 32: Elastic 40: Locking mechanism 41: Clips 42: Spring contact pieces A: Axial G1: first gap G2: Second Gap

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 another perspective view of a preferred embodiment of the present invention. FIG. 4 is a cross-sectional view of a preferred embodiment of the present invention in a use state. FIG. 5 is a cross-sectional view of a preferred embodiment of the present invention in another use state. FIG. 6 is a partial enlarged view of FIG. 4 . FIG. 7 is a schematic diagram of the operation of a preferred embodiment of the present invention. FIG. 8 is an application schematic diagram of a preferred embodiment of the present invention. 9 and 10 are schematic diagrams of the use of a conventional tool joint.

1: Tool adaptor

10: Ontology

11: Drive Department

12: Assembly Department

20: Socket

30: Magnetic suction mechanism

Claims (9)

A tool connecting rod, comprising: a main body, including a driving part and an assembly part relative to the driving part, the assembly part has an assembly hole extending along an axial direction; a socket, which does not rotate relatively It is arranged on the assembly part and includes at least one sleeve hole for connecting a connecting piece; and a magnetic attraction mechanism, which is arranged in the assembly hole and includes a magnetic attraction piece passing through the sleeve connecting piece and an axial elastic The elastic piece abutting between the main body and the magnetic piece, in a circumferential direction of the magnetic piece, there is a first gap between the sleeve and the magnetic piece to be able to be displaced relatively radially; wherein, The socket element further includes a through groove communicating with each of the sleeve holes, the through groove has a smaller diameter than each of the sleeve holes, and the first gap is defined between the groove peripheral wall of the through groove and the magnetic attraction element. The tool adaptor as claimed in claim 1, wherein the magnetic attraction member comprises a magnetic attraction end portion with magnetism, and the magnetic attraction end portion at least partially protrudes from the through-groove and is located in the set of holes. The tool adaptor as claimed in claim 1, wherein the socket is detachably inserted into the assembly hole, and the at least one set of holes comprises a first set of holes and a A second set of holes, between the first set of holes, the second set of holes and the through-slot, respectively, is provided with a shoulder that can be locked with the magnetic attraction piece in the axial direction. The tool adaptor of claim 3, wherein at least one of the shape, radial dimension and axial depth of the first set of holes and the second set of holes are different. The tool connecting rod according to claim 1, further comprising a latching mechanism, wherein the latching mechanism comprises at least one latching member retractably protruding on an inner peripheral wall of the assembling portion, and the socket member is An outer peripheral wall concavely defines at least one latching groove which can be latched with the at least one latching member. The tool adaptor as claimed in claim 5, wherein an annular groove is recessed in an outer peripheral wall of the assembling portion, and at least one through hole communicating with the assembling hole is pierced through the groove bottom of the annular groove, and each of the locking members accommodates Set in one of the through holes, the latching mechanism further includes an elastic abutting member which is accommodated in the annular groove and pushes the at least one latching member radially toward the assembly hole. The tool adaptor according to any one of claims 1 to 6, wherein a stop portion is radially protruded from the assembling portion, and the magnetic attracting member comprises a large diameter section, a small diameter section and a connection connected to the large diameter section. The shoulder between the diameter section and the small diameter section, the large diameter section is provided with a head that can be locked with the stopper in the axial direction, and the shoulder is in contact with the sleeve in the axial direction . The tool adaptor according to claim 7, wherein the large-diameter section passes through the blocking portion, and in the circumferential direction, there is a second gap between the large-diameter section and the blocking portion. The tool adaptor as claimed in claim 4, wherein when viewed along the axial direction, the first gap is not less than 0.5 mm; the magnetic attraction piece comprises a magnetic attraction end portion with at least a portion of the magnetic attraction end protruding in the through-slot and in the sleeve; the magnetic end includes a groove and a magnet accommodated in the groove, the magnet axially protrudes from the groove; the tool connecting rod further includes a clip A latching mechanism, the latching mechanism includes at least one latching member retractably protruding on an inner peripheral wall of the assembling portion, and at least one latching member is recessed on an outer peripheral wall of the socket member that can be associated with the at least one latching member a clamping groove; a ring groove is concavely formed on an outer peripheral wall of the assembly part, and at least one through hole is penetrated through the groove bottom of the ring groove that communicates with the set of connecting holes, and each of the clamping parts is accommodated in one of the through holes , the latching mechanism further comprises an elastic abutting member which is accommodated in the annular groove and pushes the at least one latching portion radially toward the assembly hole; the elastic abutting member is a ring-shaped abutting member set in the annular groove A spring; a stop portion is radially protruded from the assembly portion, and the magnetic attraction piece includes a large-diameter section, a small-diameter section and a shoulder connected between the large-diameter section and the small-diameter section, the large-diameter section and the small-diameter section. The diameter section is provided with a head that can be locked with the blocking part in the axial direction, the shoulder part is in contact with a blocking shoulder in the axial direction; the assembly hole includes a first adjacent to the driving part segment and a linking the The first segment is a second segment open to the outside, the first segment has a smaller diameter than the second segment and is provided with the blocking portion, and the second segment accommodates the socket; the blocking portion includes a The limit ring with the axial interference of the head and a clip connecting the assembly part and the limit ring; and the large diameter section is penetrated through the stop part, and in the circumferential direction, the large diameter section and the stop There is a second gap between the stop parts.

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