TWM526466U - Magnetic attraction sliding device for tool - Google Patents

Description

Tool magnetic slip device

The present invention relates to a slip device, and more particularly to a tool magnetic slip device.

It has been known in the art to use a magnet to hold the fastener during operation with a human or power tool. As disclosed in the Republic of China Bulletin No. M490944 and M513093 patents, a magnetic base is detachably assembled to a sub-rod by a card bead and an O-ring, respectively, however, the magnetic seat is lacking relative to the starter rod along the axis. The sliding mechanism makes it difficult for the fastener to be detached from the head end of the driver rod.

Furthermore, as disclosed in the Patent Nos. M347255, I280181, I254660, and I302865 of the Republic of China, a method of assembling a sub-rod and a magnetic seat is provided with a ring groove on the outer periphery of the bit rod, and the end of the magnetic block a retaining edge having a shrink hole is provided for the front and rear sliding of the retaining edge. However, when assembling the driver rod and the magnetic seat, the magnetic seat is forced to be pressed over the head end of the screwdriver rod. After the flange is expanded and deformed, it can be inserted into the groove of the ring, and the installation and disassembly process are extremely laborious and easily damage the component.

In addition, in order to avoid the lack of the above-mentioned magnetic bearing seat deformation, as disclosed in the Republic of China Announcement No. M463177 patent, an inner bushing for sandwiching a sub-rod is composed of two semi-circular curved pieces. However, the inner liner of the plastic (rubber) rubber is not only complicated in structure but also easily melted by the heat generated by the starter rod, and the magnetic sleeve cannot be inserted after the inner sleeve is tightly inserted into the outer casing of the magnetic seat. Get out of the screwdriver.

And the assembly method disclosed in the Patent No. 201540436 and the Announcement No. M506010 patent of the Republic of China, which is provided with a screw thread at a retaining edge of a magnetic seat, and correspondingly disposed at a front portion of the ring groove of the sub-rod The external thread replaces the axial strong pressure with a spiral assembly, however, the processing cost is too high.

Therefore, the object of the present invention is a tool magnetic slip device which is simple in structure and easy to disassemble and assemble.

Thus, the novel tool magnetic slip device comprises an inner bushing, a magnetic seat, a magnetic member, and a retaining member.

The inner bushing includes an inner peripheral wall extending along an axial direction and defining a shaft hole, the inner peripheral wall having an opposite first end surface and a second end surface.

The magnetic sleeve sleeves the inner bushing and is movable in the axial direction, and includes an abutting end wall adjacent to the first end surface and a peripheral wall extending to the abutting end wall. And abutting against the top end end wall of the abutting end wall, the abutting end wall having a first abutting surface opposite to the first end surface and abutting against the first end surface, the peripheral wall along the axial direction Extending and rotatably surrounding the outer wall of the inner wall.

The magnetic member is disposed on the abutting end wall and includes a second abutting surface with respect to the second end surface. The distance between the first and second abutting surfaces is greater than the length of the inner bushing along the axial direction.

The retaining member is disposed on the inner peripheral wall and protrudes toward the shaft hole in a radial direction, and is movable outward in the radial direction when the force is applied.

The utility model has the advantages that: the retaining member can be respectively retracted and protruded along the radial direction according to the presence or absence of the force, so as to be adapted to fit and pass the corresponding tool bar of a shape, and when After the tool bar and the inner bushing are locked to each other through the retaining member, the tool bar can move the inner bushing along the axial direction between the first and second abutting faces, which is not only simple and easy to structure. Disassemble the assembly.

Referring to FIG. 1 to FIG. 3, a first embodiment of the magnetic slip device of the present invention comprises an inner bush 1, a magnetic seat 2, a magnetic member 3, a holding member 4, an elastic member 5, and a Tool bar 6.

The inner bushing 1 includes an inner peripheral wall 11 extending along an axial direction L. The inner peripheral wall 11 defines a shaft hole 12 through which the tool rod 6 can be bored, and has an opposite first end surface 111 and A second end face 112.

The magnetic base 2 is sleeved with the inner bushing 1 and is movable in the axial direction L, and includes an abutting end wall 21 adjacent to the first end surface 111, and an extension of the abutting end a peripheral wall 22 of the end wall 21 and a top abutting end wall 23 opposite the abutting end wall 21, the abutting end wall 21 having a first end surface 111 opposite to the first end surface 111 The first abutment surface 211 extends along the axial direction L and rotatably surrounds the outer wall surface of the inner peripheral wall 11.

The magnetic member 3 is disposed on the abutting end wall 23 and includes a second abutting surface 31 opposite to the second end surface 112. The distance between the first abutting surface 211 and the second abutting surface 31 is greater than The length of the inner bushing 1 along the axial direction L. The magnetic member 3 has a magnetic force for adsorbing a fastener 90 when the tool is operated.

The retaining member 4 is disposed on the inner peripheral wall 11 and protrudes toward the shaft hole 12 in a radial direction, and is configured to be retracted into the inner peripheral wall 11 by being moved outward in the radial direction when subjected to a force. In the first embodiment, the retaining member 4 is a card bead, and the inner peripheral wall 11 is provided with a pair of through holes 113 that are to be engaged with the bead, and the through hole 113 is provided for the bead along the radial direction. The shaft hole 12 partially protrudes, and the material of the peripheral wall 22 corresponding to a part of the inner wall 11 is elastically deformable, and correspondingly deforms and provides a resilient force when the ball is forced to move radially outward. In the first embodiment, the magnetic base 2 is made of plastic.

The elastic member 5 is connected between the second end surface 112 and the second abutting surface 31, and has a potential energy for the first end surface 111 to abut against the first abutting surface 211. However, the elastic member 5 is not necessary. element.

The tool rod 6 is detachably disposed in the shaft hole 12 and includes an actuating end portion 61 and a linking portion 62 connected to the actuating end portion 61. The actuating end portion 61 is configured to engage the fastener member 90 to drive the fastener 90 to rotate. The linking section 62 is recessed with a neck portion 621 for securing the card bead. When the neck portion 621 is engaged with the card bead, the tool bar 6 can interlock the inner bushing 1 relative to the magnetic body along the axial direction L. The seat 2 is moved, and when the first end surface 111 abuts against the first abutting surface 211, the actuating end portion 61 is retracted into the abutting end wall 23, and the second end surface 112 is adjacent to the second abutting surface. At 31 o'clock, the actuating end 61 projects beyond the abutment end wall 23.

During the insertion of the tool bar 6 into the shaft hole 12, the linking segment 62 pushes the ball, forcing the ball to be retracted into the inner wall 11 along the radial displacement to allow the linking segment 62 is passed until the neck 621 of the interlocking section 62 corresponds to the bead, because the neck 621 is recessed to reset the bead along the radial direction, and the bead protrudes after being reset A portion of the shaft hole 12 is engaged with the neck portion 621, so that the tool bar 6 and the inner bushing 1 are in a state of being mutually engaged. At this time, the tool bar 6 can interlock the inner bushing 1 along the shaft. The movement to L is between the first and second abutting faces 211 and 31.

When the tool bar 6 is to be replaced, it is necessary to apply a moderate force to pull the magnetic base 2 away from the tool bar 6, so that the tool bar 6 is disengaged from the inner bushing 1. The new tool magnetically slides. The unit can be reloaded to other tools (not shown).

Referring to FIG. 4, a second embodiment of the magnetic slip device of the present invention is substantially the same as the first embodiment, and the difference from the first embodiment is that the retaining member 4 is squeezable and deformable. The inner wall of the inner wall 11 is recessed with a ring groove 114 for receiving the C-shaped ring, and the ring groove 114 is expanded outward in the radial direction when the C-ring is stressed. During the insertion of the tool bar 6 into the shaft hole 12, the interlocking section 62 pushes the C-ring, forcing the C-ring to be displaced into the ring groove 114 along the radial displacement to allow the linkage The segment 62 is passed until the neck 621 of the linking segment 62 corresponds to the C-ring, the C-ring is reset and the neck 621 is engaged, and the tool bar 6 and the inner bush 1 are mutually locked. status.

Referring to FIG. 5, a third embodiment of the magnetic slip device of the present invention is substantially the same as the first embodiment, and the difference from the first embodiment is that the retaining member 4 is squeezable and deformable. The O-ring, and the inner wall surface of the inner wall 11 is recessed with a ring groove 115 for accommodating the O-ring, and the O-ring is radially expanded when subjected to a force. The tooling rod 6 is inserted into the shaft hole 12, and the linking section 62 pushes the O-ring to force the O-ring to expand outwardly in the radial direction to allow the linking section 62 to pass until the When the neck portion 621 of the interlocking section 62 corresponds to the O-ring, the O-ring is reset and the neck portion 621 is engaged, so that the tool bar 6 and the inner bushing 1 are in a state of being locked to each other.

Referring to FIG. 6, a fourth embodiment of the magnetic slip device of the present invention is substantially the same as the first embodiment, and the difference from the first embodiment is that the holder 4 is a wall and the inner wall. 11 integrally formed convex ring, the convex ring protruding along the radial direction toward the shaft hole 12, the material of the inner surrounding wall 11 is elastically deformable, and correspondingly when the convex ring is forced to move radially outward Deformation and provide resilience. In the fourth embodiment, the retaining member 4 and the inner peripheral wall 11 are made of plastic. When the tool bar 6 is manually operated at a low speed, the inner bushing 1 has no overheating problem.

Through the above description, the above embodiment has the following advantages:

1. The retaining member 4 can be respectively retracted and protruded along the radial direction according to the presence or absence of the force, so as to be adapted to cooperate with the passage and locking of the tool bar 6, and when the tool bar 6 is After the inner bushing 1 is locked to each other by the retaining member 4, the tool bar 6 can move the inner bushing 1 along the axial direction L between the first and second abutting faces 211 and 31. The structure is simple and easy to disassemble and assemble.

Second, by obtaining any of the easy card beads, the C-ring, and the O-ring as the specific embodiment of the holder 4, the production cost can be reduced.

3. The elastic member 5 can reset the inner bushing 1 toward the abutting end wall 21 of the magnetic base 2, so that the actuating end portion 61 can be automatically disengaged from the fastener 90, thereby increasing the convenience of use.

4. When the tool bar 6 is operated at high speed by power (such as electric power or pneumatic power), it will be hot, and the inner sleeve 1 is sleeved by the magnetic base 2 to form a double-layer structure, so that the magnetic base 2 does not It will be directly heated, reducing the magnetic properties of the magnetic member 3 or causing burns to the fingers.

In summary, the novel device can achieve the purpose of the present invention.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧Inner bushing
11‧‧‧ inner wall
111‧‧‧ first end face
112‧‧‧second end face
113‧‧‧through holes
114‧‧‧ Ring groove
115‧‧‧ Ring groove
12‧‧‧Axis hole
2‧‧‧Magnetic seat
21‧‧‧ by the end wall
211‧‧‧ first by the face
22‧‧‧ peripheral wall
23‧‧‧Abut the end wall
3‧‧‧Magnetic parts
31‧‧‧The second is to meet
4‧‧‧ Holder
5‧‧‧Flexible parts
6‧‧‧Tool rod
61‧‧‧ actuation end
62‧‧‧ linkage section
621‧‧‧ neck
90‧‧‧fasteners
L‧‧‧ axial

The other features and advantages of the present invention will be apparent from the embodiments of the drawings, wherein: FIG. 1 is a perspective, partial cross-sectional view showing a first embodiment of the magnetic slip device of the present invention; 2 is a side elevational cross-sectional view showing the first embodiment in a disengaged position; FIG. 3 is another side elevational cross-sectional view showing the first embodiment in an actuating position; 1 is a cross-sectional view showing a second embodiment of the magnetic slip device of the present invention; FIG. 5 is a side elevational cross-sectional view showing a third embodiment of the magnetic slip device of the present invention; and FIG. A fourth side view of a magnetic slip device of the present invention is illustrated in a side elevational view.

1‧‧‧Inner bushing

11‧‧‧ inner wall

111‧‧‧ first end face

112‧‧‧second end face

113‧‧‧through holes

12‧‧‧Axis hole

2‧‧‧Magnetic seat

21‧‧‧ by the end wall

211‧‧‧ first by the face

23‧‧‧Abut the end wall

3‧‧‧Magnetic parts

31‧‧‧The second is to meet

4‧‧‧ Holder

5‧‧‧Flexible parts

6‧‧‧Tool rod

61‧‧‧ actuation end

62‧‧‧ linkage section

621‧‧‧ neck

22‧‧‧ peripheral wall

L‧‧‧ axial

Claims (9)

A tool magnetic slip device comprising: an inner bushing comprising an inner peripheral wall extending along an axial direction and defining a shaft hole, the inner peripheral wall having an opposite first end face and a second end face; a magnetic seat, the inner bushing is sleeved and movable in the axial direction, and includes an abutting end wall adjacent to the first end surface and a peripheral wall extending to the abutting end wall, And abutting against the top end end wall of the abutting end wall, the abutting end wall having a first abutting surface opposite to the first end surface and abutting against the first end surface, the peripheral wall along the axial direction Extendingly and rotatably surrounding the outer wall surface of the inner wall; a magnetic member disposed on the abutting end wall and including a second abutting surface with respect to the second end surface, the first and second a spacing of the abutting surface is greater than a length of the inner bushing along the axial direction; and a retaining member disposed on the inner peripheral wall and projecting radially toward the axial bore and capable of following the radial direction when subjected to a force Move outwards. The tool magnetic slip device of claim 1, wherein the holding member is a card bead, and the inner surrounding wall is provided with a pair of through holes that should be engaged with the bead, the through hole being available for the bead along the bead Radially protruding toward the shaft hole portion, the peripheral wall corresponding to the inner wall of the inner wall is elastically deformable, and correspondingly deforms and provides a resilient force when the ball is forced to move radially outward. The tool magnetic slip device of claim 2, wherein the magnetic seat is made of plastic. The tool magnetic slip device of claim 1, wherein the retaining member is a C-shaped ring that can be deformed by extrusion, and the inner wall surface of the inner peripheral wall is recessed with a ring for receiving the C-ring. a groove extending outward in the radial direction when the C-ring is stressed. The tool magnetic slip device of claim 1, wherein the retaining member is a convex ring integrally formed with the inner peripheral wall, the convex ring protruding along the radial direction toward the shaft hole, the inner surrounding wall The material is elastically deformable, and correspondingly deforms and provides a resilient force when the convex ring is forced to move radially outward. The tool magnetic slip device of claim 5, wherein the holder and the inner wall are made of plastic. The tool magnetic slip device of claim 1, wherein the retaining member is an O-ring that can be deformed by extrusion, and the inner wall of the inner wall is recessed with a ring for receiving the O-ring. The groove, the O-ring expands radially in the force. The tool magnetic slip device according to any one of claims 1 to 7, further comprising an elastic member connected between the second end surface and the second abutment surface, the elastic member is provided The first end surface is brought against the potential energy of the first abutting surface. The tool magnetic slip device of claim 8, further comprising a tool bar detachably disposed in the shaft hole, the tool bar including an actuating end portion, and a linkage connected to the actuating end portion a segment, the linking portion is recessed with a neck portion for holding the retaining member, and when the neck portion fixes the retaining member, the tool bar can interlock the inner bushing to move relative to the magnetic seat along the axial direction, and When the first end surface abuts against the first abutting surface, the actuating end portion is retracted to the top abutting end wall, and when the second end surface is adjacent to the second abutting surface, the actuating end portion protrudes from the top end Reach the end wall.