TWM528833U - Ratchet wrench with quick release structure - Google Patents

Description

Ratchet wrench with quick release structure

The present invention relates to a ratchet wrench, and more particularly to a ratchet wrench with a quick release structure that rotates the toggle member at a small angle to release the freely rotatable rotary head.

The ratchet wrench is a common manual tightening tool with operational flexibility and free reciprocating capability for loosening bolts, nuts or similar components, thus replacing traditional wrenches in many situations.

The ratchet wrench includes a headstock, a lever extending outward from the headstock, and a driving head disposed on the headstock. The drive head can be used to connect work objects through various sizes of sleeves, such as the above nuts, bolts and the like. The user can loosen or lock the work by simply holding the lever and rotating it back and forth. However, ratchet wrenches currently used in the industry are often limited by dead ends or small spaces, so that the drive head of the ratchet wrench cannot smoothly screw the work. Therefore, there is a ratchet wrench on the market that can be rotated relative to the trigger. However, the ratchet wrench of the existing rotatable driving head has a complicated design structure of the positioning driving head, is inconvenient in operation, and is inconsistent with the market.

In view of this, the creator has made great efforts to solve the above problems by focusing on the above-mentioned prior art, and has devoted himself to the application of the theory, that is, the goal of the creator's improvement.

One of the aims of the present invention is to provide a ratchet wrench with a quick release structure that is easy to operate and has a compact structure.

To achieve the above object, the present invention provides a ratchet wrench having a quick release structure including a driving rod, a rotating head and a locking switch. The drive rod includes a forked arm, a forked opening in the forked arm, an axial bore communicating the forked opening, and a radial bore intersecting the axial bore. The rotating head is pivotally connected to the two ends of the fork arm. The rotating head comprises a spherical outer casing, a ratchet mechanism disposed in the spherical outer casing, a plurality of positioning grooves disposed on the spherical outer casing, and a pivot passing through the rotating head and the two ends of the forked arm The axis of rotation, wherein the pivot axis is perpendicular to the radial bore. The lock switch includes a dial member disposed on the radial hole and a latch member disposed on the axial hole. The dial rotates to move the latch member axially, and the latch member locks or disengages from any of the positioning grooves.

The creation also has the following advantages: by dialing the toggle member of the lock switch, rotating the rotary head to the desired positioning groove (ie, the working angle of the output member), and then releasing the dial button can quickly achieve release and position rotation The purpose of the head. Further, since the lock switch is provided with a lock spring, the lock spring can automatically push the latch member and lock the rotary head to maintain the lock state. Therefore, the user does not need to perform additional operations, and the rotary head does not rotate arbitrarily, and has the convenience of safety and operation.

100‧‧‧ Ratchet Wrench

110‧‧‧Operation handle

120‧‧‧ drive rod

130‧‧‧forked arm

132‧‧‧Support bolt

140‧‧‧Expanded

142‧‧‧ rod body

144‧‧‧Rotation axis

150‧‧‧fork opening

160‧‧‧Axial hole

162‧‧‧ 容容

170‧‧‧ radial holes

172‧‧‧ first hole

174‧‧‧Second hole

200‧‧‧Rotating head

210‧‧‧ spherical shell

220‧‧‧ positioning groove

222‧‧‧First positioning groove

224‧‧‧Second positioning groove

230‧‧‧ pivot axis

240‧‧‧ Outputs

242‧‧‧ Positioning ball

244‧‧‧ center axis

250‧‧‧Lock switch

260‧‧‧WD parts

262‧‧‧ dial

264‧‧‧Fixed shaft

266‧‧‧Drive Department

270‧‧‧Latch

272‧‧‧ openings

274‧‧‧Bend

276‧‧‧ lateral holes

278‧‧‧Meshing teeth

280‧‧‧Lock spring

1 is a perspective view showing a first preferred embodiment of the present creation.

2 is a cross-sectional view showing a first preferred embodiment of the present creation.

FIG. 3 is another perspective view showing the first preferred embodiment of the present creation.

Figure 4 is a cross-sectional view of Figure 3.

FIG. 5 is still another perspective view showing the first preferred embodiment of the present invention.

Figure 6 is a partial cross-sectional view of Figure 5.

Figure 7 is a cross-sectional view showing a second preferred embodiment of the present invention.

Figure 8 is another cross-sectional view showing a second preferred embodiment of the present invention.

Figure 9 is a partial perspective view showing a third preferred embodiment of the present creation.

Figure 10 is a partial cross-sectional view showing a third preferred embodiment of the present invention.

Figure 11 is a perspective view showing another portion of the third preferred embodiment of the present invention.

Figure 12 is a cross-sectional view showing another portion of the third preferred embodiment of the present invention.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

As shown in FIG. 1 to FIG. 6 , the present invention provides a ratchet wrench 100 having a quick release structure, including a driving rod 120 , a rotating head 200 and a locking switch 250 . In the present embodiment, the ratchet wrench 100 preferably further includes an operating handle 110 capable of accommodating the driving rod 120. The operating unit 110 is operated by the rapid rotation in an upright state or the reciprocating movement of the horizontal state. (figure) Turn tight or loose.

The drive rod 120 includes a forked arm 130, a forked opening 150 formed in the forked arm 130, an axial bore 160 communicating the forked opening 150, and a radial bore 170 intersecting the axial bore 160. The fork arm 130 as shown also includes a bifurcation (not labeled) formed between the bifurcations. The rotating head 200 is pivotally connected to the two ends of the fork arm 130. The rotating head 200 includes a spherical outer casing 210, a ratchet mechanism (not shown) disposed in the spherical outer casing 210, and a plurality of positioning grooves 220 disposed on the surface of the spherical outer casing 210. A pivoting head 200 is formed and a pivot axis 230 passing through the ends of the forked arms 130, wherein the pivot axis 230 is perpendicular to the radial bore 170.

The rotary head 200 further includes a square output member 240 protruding from one end of the spherical outer casing 210, a positioning ball 242 disposed on one side wall of the output member 240, and a ratchet mechanism (not shown) connected to the square output member 240. The ratchet mechanism is also disposed in the spherical outer casing 210. The sleeves 242 of the output member 240 are snap-fitted to assemble sleeves of various sizes (not shown) to tighten or loosen the workpiece. Since the ratchet mechanism is an existing device, it will not be described here.

In the embodiment, the driving rod 120 further includes two supporting pins 132, an enlarged end 140 and a rod 142. Each of the support pins 132 passes through both ends of the fork arms 130 and is fixed between the spherical outer casing 210 and the fork arms 130, wherein the pivot axis 230 imaginarily passes through the axis of each of the support pins 132, so that the rotary head 200 can The pivot axis 230 is free to rotate the fork center 150 at a particular angle, such as 0 degrees to 270 degrees. The enlarged end 140 is disposed between the fork arm 130 and the rod 142. The enlarged end 140 is larger than the rod 142, and the axial hole 160 and the radial hole 170 are preferably formed in the enlarged end 140. In other words, the lock switch 250 is also disposed within the enlarged end 140, thus providing the ratchet wrench 100 of the present embodiment with better strength and operational quality.

In addition, each of the positioning grooves 220 of the embodiment includes at least a first positioning groove 222 disposed on the top of the spherical outer casing 210 and a second positioning groove 224 disposed on opposite sidewalls of the spherical outer casing 210. Preferably, the first positioning groove 222 and the second positioning groove 224 form an angle of 90 degrees, so that the user is in an upright state, that is, when the central axis 244 of the output member 240 is parallel to the rotation axis 144 of the driving rod 120. The ratchet wrench 100 is operated; or in a horizontal state, that is, when the central axis 244 of the output member 240 is perpendicular to the rotational axis 144 of the drive rod 120, the ratchet wrench 100 is operated. The axis of rotation 144 preferably refers to the centerline of the drive rod 120 and/or the operating handle 110.

The shape of the positioning groove 220 referred to herein preferably corresponds to the shape of the latch member 270, such as a circular arc shape or other suitable shape, to facilitate the latching member 270 to secure or release any of the positioning grooves 220.

The lock switch 250 includes a toggle member 260 disposed in the radial bore 170 and a latch member 270 disposed in the axial bore 160. The toggle member 260 rotates to move the latch member 270 axially to lock or disengage the latch member 270 from any of the positioning recesses 220. In the present embodiment, the lock switch 250 includes a lock spring 280 that connects one end of the latch member 270. The other end of the latch member 270 is axially moved to engage or release any of the positioning recesses 220 relative to the lock spring 280. . The lock spring 280 described herein preferably includes, but is not limited to, a compression spring.

In the embodiment shown in FIG. 2, FIG. 4 and FIG. 6, the driving rod 120 further includes a receiving groove 162 communicating with the radial hole 170. The receiving groove 162 receives the locking spring 280 and is opposite to the axial hole 160. Corresponding settings. The pocket 162 can also provide a space for the latch member 270 to be moved when it is moved, reduce the size of the aperture of the radial hole 170, and prevent the strength of the drive rod 120 from being weakened or the quality of operation. The pocket 162 can be formed in the enlarged end 140 or the stem 142, as desired.

The radial hole 170 of the embodiment is preferably a blind hole, and the latching member 270 includes a bent portion 274, so that the latching member 270 can be axially moved along the bottom end of the blind hole by the bending portion 274. The stability and reliability of the movement of the latch 270 is improved. In other various embodiments, however, the latch member 270 can also move axially within the axial bore 160 and the pocket 162 in a straight manner.

Referring to FIG. 7 and FIG. 8 together, one side of the axial hole 160 is preferably parallel to the bottom end of the radial hole (ie, the blind hole) 170, so that the latch member 270 can be along the axial hole 160 and the radial direction. The bottom end of the hole 170 and the receiving groove 162 move axially. Therefore, the latch member 270 of the embodiment has better structural strength, and the stability and reliability are relatively improved.

The dial 260 further has a dial 262 protruding from the radial hole 170, a fixed shaft 264 pivotally connected to the driving rod 120, and a driving portion 266 for driving the latching member 270. The latching member 270 defines an opening 272 that is inserted into the driving portion 266. In the first preferred embodiment, a plurality of openings 272 are formed in the bent portion 274. The number of the openings 272 corresponds to and corresponds to the number of the driving portions 266. When the dial member 260 is rotated, each of the driving portions 266 is inserted into each of the openings 272 to push the latch member 270 to move axially.

However, in the second preferred embodiment shown in FIGS. 7 and 8, the latch member 270 may be provided with only a single opening 272, and the opening 272 is preferably shaped like a tapered hole. The dial member 260 has a cross-sectional shape similar to a spade or a cam shape, and the two sides of the dial member 260 that is in contact with the side wall of the opening 272 are the driving portion 266, so when the user dials in the direction of the rod 142 At the time of the button 262, the driving portion 266 simultaneously pushes the latch member 270 to move axially away from the positioning groove 220, so that the rotating head 200 can be quickly released. In addition, since the fixing shaft 264 of the dial member 260 is disposed in the axial movement direction of the latch member 270, the dial member 260 also forms a lateral hole 276 to prevent the latch member 270 from colliding when moving in the axial direction. Axis 264.

9 to 12, the third embodiment is operated in a manner similar to the transmission mode of the gear and the rack. That is, the driving portion 266 of the dialing member 260 is a plurality of protruding teeth, and the latching member 270 has a plurality of engaging teeth 278 with respect to the protruding teeth, and each of the protruding teeth can rotately move the engaging teeth 278 to cause the latching member 270 Axial movement. Each of the protruding teeth is preferably provided on the circumferential surface of the fixed shaft 264 and located at an intermediate position of the fixed shaft 264. The fixed shaft 264 is coaxially extended from the side of each of the convex teeth and pivotally connected to the radial hole 170, so that the dial 262 can pivot the respective teeth with the fixed shaft 264 as an axis.

As shown in FIG. 10 and FIG. 12 , the radial hole 170 further includes a first hole 172 and a second hole 174 that communicates with the first hole 172 . The aperture of the first aperture 172 is smaller than the aperture of the second aperture 174. The fixed shaft 264 is pivotally connected to the first hole 172, and the second hole 174 is connected to the axial hole 160.

The detailed operation of the ratchet wrench 100 of the present invention with a quick release structure will be further described below. As shown in FIG. 1, FIG. 2, FIG. 7, FIG. 9 and FIG. 10, when the toggle member 260 of the lock switch 250 is not rotated/swapped, the latch member 270 protrudes from the fork due to the elastic force of the lock spring 280. Opening 150 and clamping the rotating head 200 The first positioning groove 222 (first embodiment) or the second positioning groove 224 (second embodiment). At this time, the lock switch 250 is in the middle position and is in a locked state/position, wherein the lock spring 280 is in an extended state.

As shown in FIG. 3 and FIG. 4, when the dial 262 of the toggle member 260 is rotated in the direction of the rotary head 200, each of the driving portions 266 is pivoted about the fixed shaft 264 and drives the latch member 270 toward the slot. The direction 162 is moved until the latch member 270 is disengaged from the first positioning groove 222 (first embodiment). However, in the embodiment shown in Fig. 8, the dial 262 of the dial member 260 is rotated in the direction of the lever body 142, and the latch member 270 releases the restriction of the second positioning recess 224 (second embodiment).

In the third embodiment shown in FIG. 11 and FIG. 12, when the dial 262 is rotated away from the axial hole 160, each of the protruding teeth drives the meshing teeth 278 to move toward the rod 142, so that the latch is latched. The member 270 is disengaged from the second positioning groove 224 to enable the rotary head 200 to rotate about the pivot axis 230. At this time, the lock switch 250 is in a released state/position, and the lock spring 280 is in a compressed state. When the lock switch 250 is in the released state, the user can arbitrarily rotate the rotary head 200 until the desired angle as shown in FIG. 5, FIG. 6, FIG. 8, or FIG. When the toggle member 260 of the lock switch 250 is released, since the lock spring 280 restores the elastic force and automatically causes the latch member 270 to protrude in the direction of the rotary head 200, the latch member 270 can fasten the rotary head 200 again. The second positioning groove 224 (first embodiment) or any of the positioning grooves 220.

The lock switch 250 of the present invention can quickly release the rotary head 200 by simply rotating/pushing the dial 260 by a small angle, so that the operation is very easy and the structure is simplified. Further, by rotating/pushing the dial 262 of the dial 260, the rotary head 200 is rotated to the desired positioning grooves 222, 224 (ie, the working angle of the output member 240), and then the dial 262 is released. The purpose of releasing and positioning the rotary head 200 is achieved.

Further, since the lock switch 250 of the present invention can selectively provide the lock spring 280, for example, the lock spring 280 in the first embodiment, the second embodiment, and the third embodiment can automatically push the latch member 270 and The rotary head 200 is locked to maintain the locked state. At this time, the dial 262 of the dial 260 will also automatically Revert to the original position, such as the central location. Therefore, the lock switch 250 of the present embodiment is in a normally closed state, and the user does not need to perform an additional operation, and the rotary head 200 is kept in a locked state without being arbitrarily rotated, and has the convenience of safety and operation.

In summary, the embodiments disclosed herein are to be considered as illustrative of the present invention and are not intended to limit the present invention. The scope of this creation is defined by the scope of the appended patent application and covers its legal equivalents and is not limited to the foregoing description.

100‧‧‧ Ratchet Wrench

120‧‧‧ drive rod

130‧‧‧forked arm

132‧‧‧Support bolt

140‧‧‧Expanded

160‧‧‧Axial hole

162‧‧‧ 容容

170‧‧‧ radial holes

200‧‧‧Rotating head

210‧‧‧ spherical shell

220‧‧‧ positioning groove

222‧‧‧First positioning groove

224‧‧‧Second positioning groove

230‧‧‧ pivot axis

240‧‧‧ Outputs

242‧‧‧ Positioning ball

244‧‧‧ center axis

250‧‧‧Lock switch

260‧‧‧WD parts

262‧‧‧ dial

264‧‧‧Fixed shaft

266‧‧‧Drive Department

270‧‧‧Latch

272‧‧‧ openings

276‧‧‧ lateral holes

280‧‧‧Lock spring

Claims (15)

A ratchet wrench with a quick release structure, comprising: a drive rod comprising a fork arm, a fork opening forming the fork arm, an axial hole communicating with the fork opening and intersecting the axial hole a radial hole; a rotating head pivotally connected to the two ends of the forked arm, the rotating head comprises a spherical outer casing, a ratchet mechanism disposed in the spherical outer casing, a plurality of positioning grooves disposed on the spherical outer casing and forming The rotating head passes through a pivot axis of the two ends of the fork arm, wherein the pivot axis is perpendicular to the radial hole; and a lock switch includes a dial member disposed on the radial hole and disposed on the a latching member of the axial hole, the dial member rotatingly moves the latch member to move axially, and the latch member locks or disengages any of the positioning grooves. The ratchet wrench with a quick release structure according to claim 1, wherein the lock switch further comprises a lock spring connected to one end of the latch member, and the other end of the latch member is axially moved relative to the lock spring. Combine or release any of the positioning grooves. The ratchet wrench with a quick release structure according to claim 2, wherein the drive rod further comprises a receiving groove communicating with the radial hole, the receiving groove receiving the locking spring and corresponding to the axial hole . A ratchet wrench having a quick release structure according to claim 1, wherein the radial hole is a blind hole, and a portion of the latch member is axially movable along a bottom end of the blind hole. A ratchet wrench having a quick release structure according to claim 4, wherein the latch member further includes a bent portion that contacts the bottom end of the blind hole. A ratchet wrench having a quick release structure according to claim 4, wherein a side of the axial hole is parallel to a bottom end of the blind hole. The ratchet wrench with a quick release structure according to claim 1, wherein the dial member has a button protruding from the radial hole, a fixed shaft pivotally connected to the driving rod, and driving the latch member to move. A part of the move. The ratchet wrench with a quick release structure according to claim 7, wherein the latch member is provided with an opening that is inserted into the driving portion. A ratchet wrench having a quick release structure according to claim 7, wherein the latch member further includes a lateral hole provided with respect to the fixed shaft. The ratchet wrench with a quick release structure according to claim 7, wherein the driving portion is a plurality of protruding teeth, and the latching member has a plurality of meshing teeth with respect to the protruding teeth. The ratchet wrench with a quick release structure according to claim 7, wherein the radial hole further comprises a first hole and a second hole communicating with the first hole, the fixed shaft pivotally connecting the first hole, the first hole The two holes communicate with the axial holes. A ratchet wrench having a quick release structure according to claim 10, wherein each of the male ring gears is disposed on a circumferential surface of the fixed shaft and located at an intermediate position of the fixed shaft. The ratchet wrench with a quick release structure according to claim 1, wherein the driving rod further comprises an enlarged end and a rod, the enlarged end being disposed between the fork arm and the rod, the axial hole and The radial holes are all opened in the enlarged end. The ratchet wrench with a quick release structure according to claim 1, wherein each of the positioning grooves includes at least a first positioning groove disposed on the spherical top of the spherical housing and a second positioning groove disposed on the side wall of the spherical housing. . The ratchet wrench with a quick release structure according to claim 14, wherein the first positioning groove forms an angle of 90 degrees with the second positioning groove.