TWI556918B - Ratchet wrench reversing device - Google Patents

Description

Ratchet wrench reversing device

The present invention relates to a hand tool, and more particularly to a ratchet wrench reversing device.

There is a ratchet wrench reversing device (Taiwan Certificate No. M490942), which includes a ratchet, a switching member, and a left swaying block and a right swaying block respectively located on the left and right sides of the switching member. The switching member includes a cam block disposed between the left and right swaying blocks, and a toggle switch coaxially coupled to the rear of the cam block. The cam block has two pushing surfaces and two positioning surfaces respectively corresponding to the left and right swaying blocks. Thereby, the toggle switch can swing between a forward swing and a reverse position. In the forward position, the toggle switch swings to the left side, and the right swing block is pushed away from the ratchet by the corresponding push surface. The left flap is abutted against the positioning surface and engages the ratchet such that the ratchet can rotate in a clockwise direction unidirectionally, and vice versa in the reverse position.

Although the above-mentioned ratchet wrench reversing device can achieve the intended operation purpose, since the toggle switch causes the left and right swaying blocks to be pushed away by the corresponding pushing surface away from the ratchet, the pushing surfaces and the like The angle between the positioning faces is too small, which may affect the torque transmission. For example, the toggle switch has a poor stopping effect on the left swaying block, and the left swaying The block is subjected to the elastic force of the elastic member, and the pushing switch is easily pushed, and the biting force of the right swaying block and the ratchet is affected, and the operating torque is lost.

In addition, the right swaying block that is engaged with the ratchet is flush with the positioning surface of the switching member of the toggle switch, and when the left swaying block is subjected to the elastic force of the elastic member, and the push switch is pushed and pushed It also affects the bite force of the right turbulence block and the ratchet.

Accordingly, it is an object of the present invention to provide a ratchet wrench reversing device that provides better relative positioning between members and ensures that torque is not lost.

Therefore, the ratchet wrench reversing device of the present invention is suitable for being mounted on a body, and the reversing device comprises a ratchet, a first cassette unit, a second cassette unit and a switching unit. The ratchet extends along a first axis and is pivotally disposed on the body, and includes a ratchet portion mounted on the interior of the body and a side disposed on the side of the ratchet portion along the first axis and protruding from The first latching unit has a first latching block pivoted to the body and a first resilient member that is resiliently coupled between the body and the first latching block, the first latching unit a latching block has a first pivoting portion pivotally connected to the body, a first latching portion opposite to the first pivoting portion and engageable with the ratcheting portion, and a first pivoting portion disposed on the first pivoting portion a first receiving surface between the portion and the first latching portion, the second latching unit has a second latching block pivoted to the body and a second latching block and a second latching block a second elastic member, the second latching block has a pivotal connection to the body a second pivoting portion, a second latch portion opposite to the second pivoting portion and engageable with the ratchet portion, and a second latching portion and the second latching portion are disposed between the second pivoting portion and the second latching portion a second receiving surface opposite to the first receiving surface, the switching unit extends along a second axis parallel to the first axis and is axially disposed on the body, and has a first clamping block disposed thereon a tilting member between the second latching block and a dialing member coupled to the tilting member and projecting from the outside of the body, operating the dialing member to enable the first card of the first latching block The second portion of the second latching portion and the second latching portion are selectively engageable with the ratchet portion, the tilting member having a side on the side of the second axis and opposite to the first latching block a positioning surface, a first pushing portion disposed on one side of the first positioning surface, a second positioning surface on the other side of the second axis and opposite to the second clamping block, and a first positioning surface a second pushing portion on one side of the positioning surface, the first pushing portion abuts the first card when the switching unit is operated and the first positioning surface is away from the first receiving surface a first receiving surface, and the second positioning surface is opposite to the second receiving surface and has a gap through the second axis and a first extension line of the first pushing portion and the first receiving line The angle at which the faces intersect is substantially 90 degrees. When the switching unit is operated and the second positioning surface is moved away from the second receiving surface, the second pushing portion abuts the second receiving portion of the second clamping block. And the first positioning surface is opposite to the first receiving surface and has a gap, and the angle between the second axis and the second extension line of the second pushing portion intersecting the second receiving surface is substantially It is 90 degrees.

The effect of the present invention is that the angle between the first extension line passing through the second axis and the first pushing portion and the first receiving surface is substantially 90 degrees. And the angle between the second extension line passing through the second axis and the second pushing portion intersecting the second receiving surface is substantially 90 degrees, so that the first card pushed by the tilting member can be ensured The clamping block or the second clamping block can maintain better positioning, and the second positioning surface is opposite to the second receiving surface and has the gap, the first positioning surface is opposite to the first receiving surface and has The function of the gap ensures the biting force of the first or second latching block and the ratchet, and the operating torque is not lost.

100‧‧‧ body

110‧‧‧ head

120‧‧‧first cavity

130‧‧‧Second tank

140‧‧‧ cover

150‧‧‧ handle

160‧‧‧First pivot hole

170‧‧‧Second pivot hole

313‧‧‧ Second interview

32‧‧‧Second elastic parts

40‧‧‧Switch unit

41‧‧‧掣动

411‧‧‧First positioning surface

412‧‧‧ first push

413‧‧‧Second positioning surface

414‧‧‧The second push

10‧‧‧ratchet

L1‧‧‧first axis

11‧‧‧ Ratchets

12‧‧‧ Drive Department

20‧‧‧First cassette unit

21‧‧‧First card block

211‧‧‧First pivotal

212‧‧‧First Card Department

213‧‧‧The first interview

22‧‧‧First elastic parts

30‧‧‧Second cassette unit

31‧‧‧Second card block

311‧‧‧Second pivotal

312‧‧‧ Second Card Department

415‧‧‧ interface

42‧‧‧WD parts

20’‧‧‧First cassette unit

21’‧‧‧First card block

213’‧‧‧ First interview

214’‧‧‧The first embedded card department

30’‧‧‧Second cassette unit

31’‧‧‧Second card block

313’‧‧‧The second interview

314’‧‧‧Second Embedded Card Department

40’‧‧‧Switch unit

412’‧‧‧First Pushing Department

414’‧‧‧The second push

L2‧‧‧second axis

L3‧‧‧ first extension line

L4‧‧‧ second extension line

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is an exploded perspective view of a first embodiment of a ratchet wrench reversing device of the present invention; A plane combination diagram of an embodiment illustrates that a switching unit is located at a neutral position and a first card block and a second card block are both away from a ratchet; FIG. 3 is a schematic diagram of operation of the first embodiment, illustrating The switching unit is configured to move the first latching block away from the ratchet and to engage the second latching block with the ratchet; FIG. 4 is a schematic diagram of switching of the first embodiment, illustrating that the operating switching unit is tilted by a second The card block is away from the ratchet and the first latching block is engaged with the ratchet; FIG. 5 is a plan view of a second embodiment of the ratchet wrench reversing device of the present invention, illustrating that a switching unit is in a neutral position and a first card block and a second card block are both away from a ratchet; 6 is a schematic view of the operation of the second embodiment, illustrating that the switching unit is configured to move the first latch block away from the ratchet and engage the second latch block to the ratchet; and FIG. 7 is the second implementation A switching diagram of the example illustrates that the operation switching unit moves the second latch block away from the ratchet and engages the first latch block with the ratchet.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 and FIG. 2, a first embodiment of a ratchet wrench reversing device of the present invention is suitable for being mounted on a body 100. The body 100 has a head 110 and a first capacity disposed on the head 110. a slot 120, a second slot 130 disposed in the head 110 and communicating with the first slot 120 is fixed to the head 110 and can close the first slot 120 and the second slot 130 The cover 140 and a handle 150 connected to the head 110 have a first pivot hole 160 and a second pivot hole 170. The reversing device comprises a ratchet 10, a first cassette unit 20, a second cassette unit 30 and a switching unit 40.

The ratchet 10 extends along a first axis L1 and is pivotally disposed on the body 100, and includes a ratchet portion 11 mounted inside the first housing 120 and a spine disposed along the first axis L1. The driving portion 12 is formed on one side of the tooth portion 11 and protrudes from the outside of the body 110. The driving portion 12 can be used for a sleeve (not shown) and can be used for operating a screw or a nut.

The first latching unit 20 has a first latching block 21 pivotally mounted on the body 100 and a first resilient member 22 that is resiliently coupled between the body 100 and the first latching block 21, the first The latching block 21 has a first pivoting portion 211 pivotally connected to the first pivot hole 160, a first latching portion 212 opposite to the first pivoting portion 211 and engageable with the ratcheting portion 11 and a first receiving surface 213 disposed between the first pivoting portion 211 and the first latching portion 212, the first latching portion 212 being in a zigzag shape.

The second latching unit 30 has a second latching block 31 pivotally mounted to the body 100 and a second resilient member 32 that is resiliently coupled between the body 100 and the second latching block 31. The latching block 31 has a second pivoting portion 311 pivotally connected to the second pivoting hole 170, a second latching portion 312 opposite to the second pivoting portion 311 and engageable with the ratcheting portion 11 and A second receiving surface 313 disposed between the second pivoting portion 311 and the second latching portion 312 and opposite to the first receiving surface 213 is formed in a zigzag shape.

The switching unit 40 extends along a second axis L2 parallel to the first axis L1 and is axially disposed in the second receiving slot 130 of the body 100, and has a first latching block 21 and a second The sliding member 41 between the latching blocks 31 and a slidable member 42 connected to the side of the swaying member 41 along the second axis L2 and protruding from the outside of the body 100.

The swaying member 41 is disposed on the second accommodating groove 130 and has a fan shape perpendicular to the second axis L2. The ram member 41 has a second axis L2. a first locating surface 411 on the side of the first locating surface 411, a first urging portion 412 disposed on a side of the first locating surface 411, and a second locating portion 412 on the other side of the second axis L2 and opposite to a second positioning surface 413 of the second latching block 31 , a second pushing portion 414 disposed on a side of the second positioning surface 413 , and a first pushing portion 412 and the second pushing portion 414 . There is a convex arcuate engagement surface 415 therebetween. The first positioning surface 411 is disposed adjacent to the second positioning surface 413, and an angle between the first positioning surface 411 and the second positioning surface 413 approaches 90 degrees, and the engaging surface 415 does not protrude from the The first pushing portion 412 and the second pushing portion 414 are smoothly engaged between the first pushing portion 412 and the second pushing portion 414 in this embodiment.

As shown in FIG. 2, the switching unit 40 is located at a neutral position, and the first latching block 21 and the second latching block 31 are both away from the ratchet 10. At this time, if the handle 150 of the body 100 is operated, The body 100 is idling with respect to the ratchet 10.

As shown in FIG. 3, when the dial member 42 is operated to rotate counterclockwise in FIG. 2 (as indicated by an arrow), the first positioning surface 411 of the tilting member 41 is away from the first latching block 21. When the first receiving surface 213 is located, the first pushing portion 412 abuts the first receiving surface 213, and passes through the second axis L2 and a first extension line L3 of the first pushing portion 412. The angle at which the first receiving surface 213 intersects is substantially 90 degrees (because the manufacturing assembly may produce tolerances, the angle at which the first extension line L3 intersects the first accepted surface 213 may also have slight errors, so it is called An extension line L3 intersects the first entrained surface 213 at an angle of substantially 90 degrees, and the first elastic member 22 is compressed and contains a retractable bomb. The second positioning surface 413 is opposite to the second receiving surface 313 of the second latching block 31 and has a gap 1 . At this time, the second latching block 31 is subjected to the elastic force of the second elastic member 32, so that the second latching portion 312 is engaged with the ratcheting portion 11, and the operator pulls the handle 150 to the When the counterclockwise rotation is performed, the ratchet 10 can be linked to rotate, and the purpose of operating the screw or the nut can be achieved.

As shown in FIG. 4, when the dial member 42 is operated to rotate clockwise in FIG. 2 (as indicated by an arrow), the second positioning surface 413 of the tilting member 41 is away from the second latching block 31. The second receiving portion 414 abuts the second receiving surface 313 and passes through the second axis L2 and a second extension line L4 of the second pushing portion 414. The angle at which the second entrained surface 313 intersects is substantially 90 degrees (because the manufacturing assembly may produce tolerances, the angle at which the second extension line L4 intersects the second entrained surface 313 may also have slight errors, so The second extending line L4 intersects the second receiving surface 313 at an angle of substantially 90 degrees, and the second elastic member 32 is compressed and has a resilient force, and the first positioning surface 411 and the first positioning surface 411 The first receiving surface 213 of one of the latching blocks 21 is opposite and has a gap 1. At this time, the first latching block 21 is subjected to the elastic force of the first elastic member 22, so that the first latching portion 212 is engaged with the ratcheting portion 11, and the operator pulls the handle 150 to the When the clockwise rotation is performed, the ratchet 10 can be linked to rotate, and the purpose of operating the screw or the nut can be achieved.

Therefore, the reversing device of the present invention can make the first latching portion 212 of the first latching block 21 or the second latching block 31 of the first latching block 21 by operating the switching unit 40. The second latch portion 312 is selectively engageable with the ratchet portion 11 and achieves the purpose of reversing the operating screw or nut. When the first abutting portion 412 abuts against the first receiving surface 213, the second axis L2 and the first extension line L3 of the first pushing portion 412 intersect the first receiving surface 213 The angle is substantially 90 degrees, and the second pushing portion 414 abuts against the second receiving surface 313, and the second extending line L3 and the second extending line L3 of the second pushing portion 414 The angle at which the two contact faces 313 intersect is substantially 90 degrees, which ensures that the first card block 21 or the second card block 31 pushed by the tilting member 41 can maintain better positioning and utilize the first The second positioning surface 413 is opposite to the second receiving surface 313 and has the gap 1. The first positioning surface 411 is opposite to the first receiving surface 213 and has the gap 1 to ensure the first card. The biting force of the block 21 or the second latching block 31 and the ratchet 10, and the operating torque is not lost, a better operational effect can be achieved.

Referring to Figure 5, a second embodiment of the ratchet wrench reversing device of the present invention also includes a ratchet 10, a first cassette unit 20', a second cassette unit 30' and a switching unit 40'. The difference between the first embodiment and the first embodiment is that the first receiving surface 213' of the first latching unit 20' has a first engaging portion 214', and the first engaging portion 214' has a circular arc concave shape. Hole shape. The second receiving surface 313' of the second latching unit 30' has a second engaging portion 314' having a circular arc-shaped hole shape. The first pushing portion 412' of the switching unit has an arcuate convex shape and is concave and convex with the first engaging portion 214'. Complementary and mutually insertable, the second pushing portion 414' has an arcuate convex shape and is complementary to the second engaging portion 314' and can be mutually inserted.

As shown in FIG. 6 and FIG. 7 , when the dial member 42 ′ is rotated in a clockwise or counterclockwise direction, the first pushing portion 412 ′ and the first engaging portion 214 ′ are inserted into each other. Alternatively, the second pushing portion 414' and the second engaging portion 314' can be inserted into each other to ensure the first latching block 21' or the second latching block 31 pushed by the tilting member 41'. 'The preferred bite force can be maintained relative to the ratchet 10.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

100‧‧‧ body

22‧‧‧First elastic parts

110‧‧‧ head

30‧‧‧Second cassette unit

120‧‧‧first cavity

31‧‧‧Second card block

130‧‧‧Second tank

311‧‧‧Second pivotal

140‧‧‧ cover

312‧‧‧ Second Card Department

150‧‧‧ handle

313‧‧‧ Second interview

160‧‧‧First pivot hole

32‧‧‧Second elastic parts

170‧‧‧Second pivot hole

40‧‧‧Switch unit

10‧‧‧ratchet

41‧‧‧掣动

L1‧‧‧first axis

411‧‧‧First positioning surface

11‧‧‧ Ratchets

412‧‧‧ first push

12‧‧‧ Drive Department

413‧‧‧Second positioning surface

20‧‧‧First cassette unit

414‧‧‧The second push

21‧‧‧First card block

415‧‧‧ interface

211‧‧‧First pivotal

42‧‧‧WD parts

212‧‧‧First Card Department

L2‧‧‧second axis

213‧‧‧The first interview

Claims (5)

A ratchet wrench reversing device is adapted to be mounted on a body, the reversing device comprising: a ratchet extending along a first axis and pivotally disposed on the body, and including a body mounted on the body a first latching unit having a first latching block pivoted to the body and a driving portion disposed on the side of the ratchet portion and extending outwardly of the body; a first elastic member that is coupled between the body and the first latching block, the first latching block having a first pivoting portion pivotally connected to the body and a first pivoting portion opposite to the first pivoting portion And a first latching portion engageable with the ratchet portion and a first receiving surface disposed between the first pivoting portion and the first latching portion; a second latching unit having a pivot a second latching block disposed on the body and a second elastic member that is elastically coupled between the body and the second latching block, the second latching block having a second pivotal connection pivotally connected to the body a second latch portion opposite to the second pivot portion and engageable with the ratchet portion, and a second latch portion and the second latch portion And a second receiving surface opposite to the first receiving surface; and a switching unit extending along a second axis parallel to the first axis and axially disposed on the body, and having a first a tilting member between the latching block and the second latching block and a dialing member connected to the tilting member and protruding from the outside of the body, operating the dialing member to enable the first latching block The first latching portion and the second latching portion of the second latching block are selectively engageable with the ratcheting portion, the tilting member having a side on the second axis and opposite to the first card a first positioning surface of the block, and a side of the first positioning surface a first pushing portion, a second positioning surface on the other side of the second axis and opposite to the second latching block, and a second pushing portion disposed on a side of the second positioning surface, When the unit is switched and the first positioning surface is away from the first receiving surface, the first pushing portion abuts against the first receiving surface of the first latching block, and the second positioning surface and the first positioning surface The two receiving surfaces are opposite to each other and have a gap. The first axis extending through the second axis and the first pushing portion intersects the first receiving surface at an angle of substantially 90 degrees, and the switching unit is operated and the When the second positioning surface is away from the second receiving surface, the second pushing portion abuts the second receiving surface of the second clamping block, and the first positioning surface is opposite to the first receiving surface And having a gap, the second extension line passing through the second axis and the second pushing portion intersecting the second receiving surface at an angle of substantially 90 degrees. The ratchet wrench reversing device of claim 1, wherein the first entrainment mask of the first cassette unit has a first embedding portion, the first pushing portion of the switching unit and the first embedding portion The second receiving portion of the second latching unit has a second engaging portion, and the second pushing portion of the switching unit and the second engaging portion are concave and convex and complementary to each other. Can be embedded with each other. The ratchet wrench reversing device according to claim 2, wherein the first engaging portion of the first receiving surface of the first latching unit has a circular arc-shaped hole shape, and the second receiving portion of the second latching unit The second engaging portion of the kneading surface has a circular arc-shaped hole shape, and the first pushing portion and the second pushing portion of the switching unit have a circular arc shape. The ratchet wrench reversing device according to any one of claims 1 to 3, wherein the cross member of the switching unit of the switching unit is perpendicular to the cross-sectional shape of the second axis, and the first positioning surface is The second positioning surface is disposed adjacent to each other, and an angle between the first positioning surface and the second positioning surface approaches 90 degrees. The ratchet wrench reversing device of claim 4, wherein the switching member of the switching unit further has a convex arc-shaped connection between the first pushing portion and the second pushing portion. The engaging surface does not protrude from the first pushing portion and the second pushing portion.