TW386050B - Open end ratchet wrench - Google Patents

Abstract

A wrench has a pair of jaws that are disposed on a handle and are spaced to define an opening for a workpiece. A pair of plates, each of which includes a workpiece engaging surface are mounted on the jaws for selective movement between first and second positions. In the first position, the plates are substantially immobile with respect to each other so that rotation of the handle in a first direction causes the plates to grasp the workpiece between the engaging surfaces and turn the workpiece in the first direction. In the second position, a first one of the plates is pivotable with respect to a second one of the plates so that rotation of the handle in a second, opposite direction causes pivoting of the first plate and allows the engaging surfaces to slide over the workpiece, thereby allowing the workpiece to remain stationary. Thus, the wrench tightens (or loosens) the workpiece when rotated in the first direction, and slips over the workpiece in a ""ratcheting"" manner when rotated in the second, opposite direction. In some embodiments, both plates are pivotable away from each other in the second position. The plates can be mounted so as to move toward each other in the first position in response to rotation of the handle in the first direction.

Description

A7

Printed by the Zhengong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. The description of the invention () in the relevant application case. This application was submitted by the applicant on July 13, 1998 at 09 / 1M, and the title is "Opening." The "patent ratchet wrench" of the pending patent application continues to be applied for 'and the application is filed in the part of the application of ΐ99_May 6 No. _36,349, both of which are combined; $ This article is for reference. 1Λ. This is a ratchet wrench, and more particularly an open ratchet wrench that can be placed on the workpiece from the side. In many cases, it is necessary to apply a torque to a workpiece (such as a nut, bolt, and in-line pin) such as rotating ^ relative to a threaded member. Two well-known tools for turning workpieces are ratchet wrenches and open-ended adjustable wrenches. The ratchet wrench is typically a closed device that completely surrounds the workpiece. 'So the ratchet wrench is installed on the workpiece from the top (or bottom, root). On the contrary, the open hand can be installed from the side of the workpiece; Sufficient space is particularly useful in small spaces where wrenches are installed. In addition, in narrow spaces, there is often no space to fill: typical outside of the ratchet mechanism 1 of a wheel wrench, = the wrench for the side can only be from the side It is necessary to lock / unlock the hydraulic or fuel line alignment fittings of the wrench. Typically, open-ended adjustable wrenches lack a ratchet mechanism. Therefore, in the locking or releasing operation, the wrench must be used to lock the workpiece. After a relatively small distance (such as 30 degrees), it is removed from the workpiece, and then placed on it at different angles to continue the rotation. This procedure is repeated (often many times) until the construction ^: ----- --Installation ------ Order! (Please read the precautions on the back ^;. ^? 1 ^ W) line. This paper is from Common Chinese National Standard (CNS) Α4 · (210X297 mm A7 B7 5 2. Description of the invention (The pieces are completely locked or loose Open-ended ratchet wrenches similar to typical adjustable wrenches have been developed for narrow and linear fitting applications. Some open-ended ratchet wrenches use many impulse load rollers, cams, or detents to engage the workpiece; others use a set Inserts that are shaped to fit the workpiece and engage an internal ratcheting mechanism. Some of these wrenches, even if they have open ends, surround the workpiece to the point where they must actually be installed vertically from above or below the workpiece. An open-ended ratchet wrench (described in the applicant's US Patent No. 5,456,143) includes a pair of elongated flat plates that are pivotally mounted to a pair of spaced apart jaws on the wrench handle. A spring mounted on the handle engages the elongated flat plate The long flat plates are biased toward each other, so when the handle rotates in the driving direction, the long flat plate grasps the workpiece and rotates it. When the handle rotates in the opposite direction, the spring bias is overcome, thus allowing two The long flat plate rotates on the jaw and slides on the surface of the workpiece in a ratcheting manner. Summarizing the feature of the present invention is a general form A pair of jaws and a pair of flat plate wrenches, which are provided on the handle and are spaced apart to define an opening for the workpiece. Each plate includes a workpiece engaging surface adjacent to the opening, and the plate is mounted on the jaw so that The selective movement between the first position in the sentence and b) the second position 'in the first position, the plates are substantially fixed relative to each other'. Therefore, the rotation of the handle in the first direction causes the plate grip to be on the joint surface. And rotate the workpiece in the first direction, in the second centering, the first plate system can pivot relative to the second plate, so the rotation of the handle in the (opposite) direction causes the first plate to rotate and allows Please be aware of the joining table. Binding line. The printing station of the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. The printing station slides on the workpiece on both sides. Therefore, the worker is allowed to: (or loosen) the wrench when rotating in the second direction. With = this combination of the second and second middle, 1 wrench Γ ° has the characteristics of σ wrench and ratchet wrench—wrench τ is strong and can be equipped with IS 4 j moving parts, which is the smallest. Number of shifts A ratcheting device is used to provide ratchets. As for the wrench, it is quite easy to manufacture (and in the example, each flat plate is in good condition to increase the torque value, "the large surface area of the stomach is engaged with the workpiece, thereby reducing the stress of the wrench. In this way, the risk of damage to the wrench and the workpiece is reduced. The space between the parts and the configuration of the elongated flat plate allows the flat plate to be operated by the operator: two simultaneous joints on the four sides of the workpiece and only surrounding the workpiece-degree W wrench can be easily Place the I-piece from the side and remove the I-piece, which is easy to use in a narrow space. In a preferred embodiment, a ratchet-type spray-in operation rotary spring assists, and the spring biases the flat plate toward the opening, causing the workpiece to quickly and easily Rotate without clearance behind the guard. The preferred embodiment may include one or more of the additional features described below. The plate is mounted for selective movement in response to rotation of the handle. Independent locking or release There is no need for a mechanism to change the operating state of the wrench. For example, when the workpiece is turned in the first direction, the wrench is simply pushed in the opposite direction to move the plate to the second position for ratcheting. 0 The first plate is mounted to the first jaw, so the distal end of the first plate is substantially immovable in the first position, and when the first plate is in the second position, it is printed by A7 of the Zhengong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. ------ B7 V. Description of the invention (4) '~ is pivotable with respect to the second plate. In one embodiment, only the first plate is turned and it is moved away from the opening and the second plate. In another embodiment, the two plates are both far from the opening and move away from each other. The plates are substantially immovable relative to each other when in the first position, because they cannot extend away from each other. In order to further To avoid slippage, in one embodiment, one or both of the plates are mounted so that the distal ends of the plates can move toward each other when in the first position. This provides the grip strength of the plates against the workpiece. A workpiece that is too small is particularly useful. The distal pin on the distal end of the first plate is received by a groove provided on the distal region of the first jaw. Alternatively, the distal groove is tied to the first jaw, And the distal pin is on the plate. In this case, when the tablet is in the first position, the distal pin is set at the first part of the distal groove, and when the tablet is in the second position, the 'distal pin is set at the second part of the distal groove. The first part of the distal groove is oriented such that a distal pin that is 'engaged' when the wrench is turned in the first direction makes the distal end of the first plate substantially fixed relative to the second plate, and the distal groove is The second portion is oriented so as to allow the distal end of the first plate to pivot relative to the second plate when the wrench is turned in the second direction. In one embodiment, the distal groove is v-shaped, that is, The distal groove has a pair of sharp-angled protrusions. The v-shaped base is oriented toward or away from the handle. The proximal pin on the proximal end of the first plate is received by a groove provided in the proximal area of the first jaw. The _-parts of the proximal groove and the distal groove are oriented (preferably along a common curve arc) to allow the first plate to apply the Chinese National Standard (CNS) A4 specification (210X297) on the first paper size Mm) ~ --__ 7 ------ ι ^ — (Please read the notes on the back first Do a page) Order - selectivity between 5 A7 five lines, description of the invention (and its second position. The center of the common curve arc is set within the opening α. The second portion of the distal groove is positioned across the curved arc. A proximal pin is also mounted to the proximal end of the second plate. A distal pin at the distal end of the second plate is received by a groove provided in a distal region of the second jaw. The distal and proximal grooves are oriented to allow the second plate to be selectively moved between the first and second positions.

I The plate and spring are set so that the wrench is reversed relative to the workpiece, and the operation of the hand in the first and second directions is reversed. That is, when the wrench is turned over,-when the wrench is turned in the second direction, the wrench locks or loosens the workpiece, and when turned in the first direction, a ratchet-type engaging movable y is generated. As another biconvex method, combined with the _ flat plate end groove is across the curve radian ^ direction, the curve is isolated-the center is in the doorway, and the first part of the distal groove is It intersects with the arc, and the second part of the distal recess is located at the inner slot of the arc ^. 1 立 罝 hum, the distal pin is-placed in the first part of the slot, and can be In the second part of the second position, in order to cause the first plate to be printed by the Consumers' Cooperative of the Central Standard Bureau of the Ministry of Economic Affairs, one of the advantages of printing this wrench embodiment is additional compliance. The lateral distal end 凹槽 is easier to set and cut than the ^ convex (e.g., V-shaped) groove as discussed in the above embodiment. ρ m is heterogeneous. ... up-for long view the first and second parts of the distal groove are at the distal groove (¾ and proximal). The tenth end of the distal groove The first and second parts can be the size of this paper (5. Description of the invention The distal groove can also include an area that is oriented to receive the distal pin and cause the first plate to move toward the second plate and act as a handle Hold the workpiece further while turning in the first direction. This area of the distal groove is positioned at this; > 矣 典 施 '' example punch, the first part and this area are at the distal end of the distal groove And the second part is near the distal groove; # 二 The first part and the area are near the distal groove ^ and the second part is near the distal groove. The proximal pin on the proximal end of the first plate is housed in a proximal end disposed in the proximal area of the first jaw. At the ― position, the proximal lock is recessed and set in the proximal recess. ―Part, and can be moved into the second part of the proximal groove in the second position. In the second position, the first plate is pivoted about the second plate of the proximal lock 2. The first of the proximal groove The first and second parts are kissed along this arc. Back-spring key position biases the first plate to return from the second position to the first position.… The wrench also includes the first The distal pin is in one of the distal or first end regions of the second plate, and the second distal groove is provided in the second position. When the lock is in the-position, it is set in the second far position-, in the second position. Time shifted into the-, h ..., ^ injury, and can be u, the second part of the groove. The first and second parts of the distal concave pattern are also at the opposite ends of the second distal groove. In the embodiment t, the second distal groove is aligned when the second distal pin is oriented from the ^^ arc, so that when the first part of a distal groove is formed, the second plate will not face the concubine.丨 The first brother and board pivot. In another way A7

First, = the groove is across the arc ", and the second flat-end lock is located radially inside the fox when the first part of it and the solitary part are intersecting, so that when the second The first part of a distal groove is pivoted relative to the first plate when it is moved to the second plate. The first and second parts of the distal groove can be curved or straight: The second part is positioned at its opposite end. Each distal recess contains a proper orientation to the area of the respective distal iron, and causes the first and second plates to move toward each other and when the handle is turned in the first direction More advanced grasping of the workpiece. These areas are positioned outside the orphan 'and at opposite ends of their respective distal grooves. The first and second plates move away from each other around the proximal pin when in the second position Although the plates can have different shapes, in some embodiments it is advantageous to construct the plates in the same way. This greatly simplifies the manufacture and allows the wrench to be accommodated in this manner by movably mounting the plate to the jaw. Dimensionally adjusted. Each plate preferably has multiple engaging surfaces, and each surface It is elongated to join the surface of the workpiece and the length of the surface is large. Sting. The joint surface is flat. The joint surface is set to make an angle between its boundaries. The angle is the same as that between the adjacent surfaces of the workpiece. Angle. In one embodiment, the portion of each plate including the workpiece joining surface has an increased thickness relative to the other portions of the plate. Other features and advantages of the present invention will vary from the following detailed description and the scope of patent applications Clear. Figure 1 is a top plan view of the open ratchet wrench. Figure 2 is a side view of the wrench in Figure 1.

Figure 3 shows the longest flat plate that is installed on the spanner with the front spanner removed from the front spanner. Duan Tuo, Figures 4 and 5 are plan and side views of one of the flat plates shown in Figure 2, respectively. 1 FIG. 6 illustrates another embodiment of a wrench, which is used to rotate a workpiece in a body movement direction (D). Figures 7 and 8 show the operation of the wrench of Figure 6 in the non-driven (ratcheting) direction (R). Figure 9 is a top plan view of another embodiment of the open ratchet wrench. Figure 10 shows the wrench of Figure 9 with the front panel removed to depict a pair of elongated plates pivotally mounted on the wrench. Figures 11A, 11B and 12A, 12B are the plan and side views of the flat plate shown in Figure 10, respectively. Fig. 13 is a sectional view of the wrench head of Fig. 9. The wrench head is engaged with a work piece (W) and placed against a surface (s). Figures 14A and 14B show another configuration of the elongated flat plate shown in Figure 10. Figures 15A-15C and 16A-16B depict another embodiment of a wrench. Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Figures 17A-17E are helpful for understanding the other configuration of one of the movable flat plates of the wrench. 18 to 20C illustrate another embodiment of the wrench. $ / Figures 21 to 23 depict yet another embodiment of the wrench. Detailed description The wrench of the present invention is similar to my US patent No. 5,456,143. Tt The paper size is applicable to China National Standard (CNS) Α4 specification (2! 〇 × 297 mm)

(Patent No. 143) and my pending US patent application ^ 008 / 728,627 (Application No. 627), the title of both is "open-ended ratchet wrench" and is incorporated in For reference in this article. The wrench of the present invention has many advantages of Patent No. 143 and Application No. 627, plus other advantages that have been discussed, and these advantages will become clear below. Referring to Figures 1 to 3, the open ratchet wrench 15 includes a pair of curved jaws 16, 17 at the ends of the elongated handle 18. The jaw portion 16 is slightly larger than the jaw portion 17 and, for the purpose of illustration, the jaw portion 16 protrudes significantly from the handle 18. The jaws 16, 17 and the handle 18 are defined by a pair of panels 20, 22 (Fig. 2). A central plate 24 is sandwiched between the two panels 20, 22 in the handle 18 to provide space in the jaws 16, 17 to a pair of elongated flat plates 26, 28. The elongated flat plates are movably mounted in the following manner. Jaws 16, 17 are mounted to panels 20,22. The plates 20, 22, 24 are fixed together to the handle 18 in any suitable manner, such as by screws (not shown). The components of the wrench 15 are made of tool steel or hardened steel for the purpose of strengthening. One of the advantages of the wrench 15 is its simple structure. The front panel 20 and the rear panel 22 are identical to each other, and the elongated flat plates 26, 28 are also constructed identically. Therefore, the wrench 15 is easy to manufacture and can be easily increased or reduced in size (i.e., enlarged or reduced relative to a standard-sized open-ended wrench). Printed by Consumer Agency

Member of the Central Standards Bureau of the Ministry of Economic Affairs X

As shown most clearly in Figures 1 and 2, the panels 20, 22 extend longitudinally beyond the distal end 25 of the central panel 24 to form a generally "c" shaped head 19 with an arc-shaped jaw 16, 7. The jaws 16, 17 are laterally spaced from each other by a suitable amount to partially (not more than 240 degrees) surround the central opening 21 for receiving a workpiece (such as a bolt head, a nut, or a linearly arranged accessory). Therefore, sufficient space s This paper is from the applicable national standard (CNS) A4 specifications (210X297 mm)-A7 _______B7_ V. Description of the invention P) is provided between the tips of the flat plates 26, 28 and the workpiece joint surface to allow The wrench 15 is placed on the workpiece from the side, not from above (or below) the workpiece. Figures 4 and 5 show the elongated plate 26 separated from the rest of the wrench. As discussed, the tablets 26, 28 are the same, so the tablets 28 are not displayed independently. The long flat plates 26, 28 are curved (more specifically, waist-shaped or kidney-shaped) and are slightly thinner than the central plate 24, so they can easily move between the panels 20,22. The concave sides of the elongated flat plates 26,28 (that is, the opposite sides of the flat plates 26,28) are cut to define a series of triangular spires 30, each of which is a pair of flat surfaces 30a, (Defined by ib. Each flat plate 26, 28 includes three cutouts 31, the cutouts are defined by the adjoining triangular spires 30 of the flat plates, and the flat plates 26, 26 define another central cutout 31 at the connection of the flat plates. The long table & 30a, 30b at the intersection of the central slot 31 is oriented at an angle that matches the angle defined by one of the workpieces on the adjacent surface (for example, for a hexagonal bolt head or nut 12 °). The flat plates 26,28 provide all 30a, 3 Ob and the eight-band six-signal beam term at 240 degrees (Figure 1). Therefore, the surface set on the flat plates 26,28 30a, 30b is equivalent to the so-called "twelve-point" design. (That is, if you want to extend the plate to define a 360-degree shape, they will provide twelve two-cornered spires or "points", and four surfaces. ;, 3 (^. "Twelve o'clock" ° "Ten of the" ^ "is commonly used in socket wrenches, in order to describe the bounded by the socket The number of "points" The proximal ends of the elongated flat plates 26, 28 are reduced in thickness at the shoulders 29 to define a shelf portion 29a at the base of each flat plate 26, 28. The shelf portion 29 is approximately Half of the thickness of the rest of each flat plate. A pair of round holes 3u, 3ib of this paper ruler (for CNS> A4 specifications-^ ~ rr ~ z—-Printed by the Staff Consumer Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs A7 B7 V. Description of the invention P) is formed in each of the flat plates 26, 28, one hole (31a) is in the distal region of the flat plate, and the other circular hole (3lb) is in the shelf portion 29a. As discussed below, the circle The holes 31a, 31b accommodate pins that also pass through the panels 20, 22, and the pins movably mount the long flat plates 26, 28 in the wrench head 19. Because the flat plates have the same shape, when the flat plates 26, 28 are mounted on the jaws When the elongated surfaces 30a, 30b face each other in the parts 16, 17, one flat plate (for example, the flat plate 26) faces upward, and the other (flat plate 28) faces downward. As a result, the shelf parts 29a of the two flat plates will Overlap, and their round holes 31b are in registration alignment. When the long flat plates 26, 28 are in their rest position ( (As shown in Figures 1 and 2), their elongated surfaces 30a, 30b extend into the central opening 21 a sufficient amount to rotate or rotate the workpiece from the position shown in Figure 3 At the 30 degree position, engage and hold the face of the hexagonal workpiece. Each of the elongated surfaces 30a, 30 is configured to engage one of the faces of the workpiece and extend over a substantial portion of the length of the face (such as at least 54%) ). The long flat plates 26, 28 are restricted in movement by three pins 32, 34, 36, and are held between the panels 20, 22 by these pins, which are respectively through the panels 20, 22 The grooves 42,44,46 and the circular holes 31a, 31b in the elongated flat plates 26,28 pass from the panel 20 to the panel 22. The pins 32, 36 are fixed in the distal circular holes 31a of the plates 26, 28, and the pins 34 are fixed in the aligned proximal circular holes 311 · of the plates 26, 28. As described below, the pin 34 is held loosely within the round hole 3 lb of the plate 26 to allow the plate 26 to pivot about the pin 34 during ratcheting engagement. The grooves 42,44,46 in the panel 20 are the same as and aligned with the corresponding grooves 42,44,46 in the panel 22. The groove 42 is set in the jaw 17 (please read the precautions on the back page first)-binding and binding The paper size is applicable to the Chinese National Standard (CNS) A4 specification (2 丨 0X297 mm) Α7 Β7 V. Invention In the distal region of ρ, the groove 44 is positioned at the proximal base 23 of the middle jaw of the wrench head 19, and the groove 46 is positioned at the distal region of the jaw 16. The grooves 42, 44 are oriented along a common curved arc whose center is at the center C of the workpiece W (Fig. 3). (Center C is also the center of the wrench head 19). The groove 46 includes a pair of raised portions 48,50. The inner protrusions 48 are oriented along the same arc as the grooves 42,44. The grooves 42,44 and 46 are convex within the grooves, 48 respectively defining the arc length of H12 degrees. The outer protrusions 50 of the grooves 46 cross the inner protrusions 48 and extend radially outward from the inner protrusions 48. In particular, "the outer convex portion 50 extends along the center at an arc of point 45 (Fig. 1), and when the f-pin 34 is positioned on the opposite side of the groove 44 (such as the pin position 34 'indicated by the dashed line in Fig. 1) ), Point 45 is equivalent to the center of pin 34. As described below, the pin position 34 'corresponds to the "unlocked" or ratcheting engagement position of the elongated flat plates 26, 28. The outer protrusion 50 extends from a distal end of the distal end of the inner protrusion 48 to the inner side. The radially spaced-apart ends of the protrusions 48 follow an arc length of 9-10 degrees. Therefore, the overall shape of the groove 46 is V-shaped. The jaw 16 is enlarged relative to the jaw 17 in the manner described above, In order to provide space for the V-shaped groove 46 without unduly weakening the strength of the jaw 16. A leaf spring 50 (Fig. 2) is placed at the base 23 of the wrench head 19 at the end of the handle 18. The leaf spring 50 One end 52 is locked in an inclined groove 54 (inclined with respect to the central longitudinal axis of the handle 18) of the central plate 24. The opposite end 56 of the leaf spring 50 is engaged with the curved outer surface 27 of the flat plate 26, so that the flat plate 26 Bias inwardly toward the center C of the wrench head 19 and abut the workpiece W (FIG. 3). When the wrench 15 is in the position shown in FIG. 3, the pin 36 engages with the protrusion 48 in the groove 46 At the proximal end, the pin 34 is joined to the surface of the groove 44 (relative to the opening 21) at the far right end of the groove 44 (as shown in FIG. 3), and the pin 32 is positioned T5 China National Standard (CNS) A4 specification (21〇 × 29ί7 mm) A7 B7 V. Description of the invention f) is at the distal end of the groove 42. So when the wrench 15 is in the driving direction (for example, clockwise as shown in Figure 3) Direction), the elongated flat plates 26, 28 are in the "locked" position and fixed relative to each other. The operation of the wrench will be explained more clearly below with reference to the embodiment of FIGS. 6 to 8. But briefly, when the jaws 16, 17 are placed on the workpiece w from the side, the wrench 15 is rotated in the driving direction D to rotate the workpiece W. When the handle 18 is turned in the driving direction, a pressure is generated between the workpiece W and the surfaces 30a of the flat plates 26, 28. The pressure forces the plates 26,28 and the pins 32,36 away from the center C, and also forces the proximal ends of the plates 26,28 and the pins 34 toward the center C inward. These moving parts are prevented by the engagement of the pins 32, 36 with the distal and proximal surfaces of the grooves 42, 46 and the engagement of the pin against the rightmost surface of the groove 44. Therefore, the flat plates 26, 28 remain fixed in the jaws 16, 17 relative to each other, the workpiece W is held between the flat surfaces 26a at the long surface 30a, and the workpiece W is rotated in the driving direction d . Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy When the handle 18 is turned in the opposite direction of the arrow D (for example, counterclockwise), a 'ratcheting engagement' occurs. That is, the flat plates 26, 28 slide on the surface of the workpiece, thereby allowing the workpiece to remain stationary. This operation is explained in detail below with regard to Figures 7 and 8. However, 'in short, when the handle 18 is first turned in the ratcheting meshing direction, the pins 32,34 along the curvature of the grooves 42,44 are collectively moved to the "not" at the opposite ends of the respective grooves 42,44. Locked "position. That is, the pins 32, 34 are moved to the proximal end of the groove 42 and the leftmost end of the groove 44 respectively. Similarly, also far away, the pin 36 moves within the convex portion 48 within the groove 46 to the opposite end (ie, the end) of the inner convex portion 48 (which is equivalent to one end of the outer convex portion, as described above). . Therefore, the long flat plates 26, 28 and the handle 18 rotate around the center c. This paper size applies the Chinese National Standard (CNS) A4 specification (21 × 297 mm). A7 B7 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs! 5. Description of the invention (') Until the pins 32, 34, 36 reach the ends of the grooves 42, 44 and the groove protrusions 48, respectively. This operation requires about 10 to 12 degrees of handle rotation, which is equivalent to the lone length of the groove. When the pins 32, 34, 36 are positioned as described above, the plates 26, 28 are "unlocked" and ready for ratcheting engagement. When the wrench 18 is further rotated counterclockwise (for example, 30 degrees in the 12 o'clock configuration shown in FIG. 3), as each corner of the workpiece slides over the long surfaces 30a, 30b of the flat plate 26, the flat plate 26 engages The workpiece I causes the flat plate 26 to pivot outward from the center C about the center point 45 of the pin 34 (FIG. 1). During the pivoting movement of the plate 26, the tie 28 remains stationary. The pivoting movement of the flat plate 26 is restricted by the raised portion 50 outside the groove 46. That is, when the flat plate 26 is pivoted, the pin 36 is removed inside the outer projection 50. The leaf plate of the leaf spring 50 is biased inward toward the center C. Therefore, when the corner of the workpiece moves toward the cut groove 31, the blade spring 50 drives the flat plate 26 to pivot inwardly about the center point 45 of the pin 34 at the position 34 ', and returns to the fully engaged state with the surface of the workpiece. In the 12 o'clock design shown in Figure 3, the handle needs to be rotated about 30 degrees to make the jaws 16,17 around a corner of a hexagonal workpiece to ratchet. Because the wrench 15 is a symmetrical structure, the driving and ratcheting engagement directions can be easily reversed by turning the wrench 15 relative to the workpiece (that is, the jaw is on the left side of 17 when viewed from above). In this orientation, the driving direction D is counterclockwise, and the ratcheting engagement direction R is clockwise. Other embodiments are within the scope determined by the scope of patent application described below. For example, the wrench may have an elongated flat plate with more or less workpiece gripping surfaces. This paper size applies to China National Standards (CNS> A4 size (210X297 mm) (please read the precautions on the back p " 丨 ^ this page). The central standard bureau of the Ministry of Economics and Economics w: printed by A7 —_____ B7 V. Description of the invention P) Figures 6 to 8 show a so-called "six-point" wrench 115, in which the jaws 116, 117 respectively have supporting long flat plates 126, 128 containing two workpiece joint surfaces 130. Each surface 130 is long enough to join one surface of the workpiece boundary and along the entire length of that surface. The surface 130 defines an angle of 120 degrees and a notch 131 therebetween. On the other hand, the wrench 115 is the same as the wrench 15, so other components of the wrench 115 are given the same reference numerals as the corresponding components of the wrench 115. »In operation 'After the wrench 15 is placed on the workpiece w from the side, the handle 20 is rotated in the driving direction (shown in FIG. 6D) (for example, clockwise) to rotate the workpiece W. As described above with respect to the wrench 15, since the pins 32, 34, 36 are located in the respective grooves 42, 44, 46, the flat plates 126, 128 are in the "locked" position. Thus, when the handle 20 is rotated in the driving direction 0, a pressure is generated between the work W and the surface 130 of the flat plates 126, 128. This pressure drives the plates 126,128 and pins 32,36 away from the center C, and the proximal ends of the plates 126,128 and the pins 34 face inward toward the center C. By * 32, 36 engaging against the groove respectively. The distal and proximal ends of 42,46 and the inner and right-hand ends of the groove 44 by pin 34 (see Fig. 6), this movement can be avoid. Therefore, the flat plates 126, 128 remain fixed relative to each other in the jaws 116, 117, during which the workpiece W 'is grasped and the workpiece is rotated in response to the rotation of the handle. Referring to Fig. 7, a ratcheting engagement operation is performed by turning the handle 20 in the opposite direction R (counterclockwise in this example). When the handle 20 is first moved in the direction R, pressure occurs between the workpiece W and the surface 130 of the flat plates 126, 128. This pressure causes the pins 32, 34, 36 to slide to the opposite ends of the grooves 42, 44 and the raised portions 48 within the grooves 46, respectively, thereby causing the flat plates 126, 128 to conform to the Chinese National Standard (CNS) on the paper size. A4 specifications (210X297 mm): ~ 18------------ t .-- 'I. (Please read the precautions on the back page first) Order A7 B7 Employees of the Central Standards Bureau of the Ministry of Economic Affairs Cooperative printed 5. Invention description P) 116, 117 rotates along the common curved arc of these grooves. When the pins 32, 34, 36 reach the opposite ends of the respective grooves (which occurs after the handle is rotated about 10-12 degrees), the elongated flat plates 126, 128 are in the "unlocked" position for ratcheting engagement. The further rotation of the handle 20 around the workpiece boundary in the direction r causes additional pressure to be applied by the workpiece W to the flat plates 126, 128. The pressure causes the flat plate 126 to turn around the pin 34 relative to the workpiece and the rest of the jaw 116. This movement is restricted by the pin 36, which is moved away from the raised portion 50 outside the groove 46. Thus, the elongated surfaces 13 of the flat plates 126, 128 slide around the corners of the workpiece boundary, thereby allowing the workpiece to remain stationary. Once the jaws 116, 118 have been rotated about 60 degrees to a new ratcheting engagement position (ie, 'when one corner of the workpiece W slides to an adjacent slot 131)', the biased leaf spring 50 drives the plate. 126 pivots inwardly about the pin 34 so that the pin 36 is moved to an unlatched position at the distal end of the projections 48,50. If further ratcheting is required, the user continues to turn the handle 20 in the direction r. Otherwise, the user resumes turning the handle 2 in the driving direction 0 again. In the first few degrees of rotation in the direction ，, the plates 126, 128 will not rotate the workpiece but as the pins 32, 34, 36 move to the ends of the grooves shown in Figure 6, the plates will rotate to their "lock Tight position. After that, further rotation of the handle in the driving direction (for example, clockwise) will cause the flat plates 126, 128 to grasp and rotate the workpiece. Still another embodiment will be within the scope defined by the scope of patent application. For example, the positions of the distal pins and grooves can be changed. That is, referring to FIG. 3, the pins 32, 36 can be formed on the panel, and the grooves 42, 46 are defined on the flat plate 26, 28. Please note that the dimensions of this paper apply the Chinese National Standard (CNS) A * specifications (210 × 297 mm) T9 r A7 I_______B7 V. Inventory area I: 7). Figures 9 and 10 show an open-end wrench 215 with a pin and groove structure for repositioning. The wrench 215 is similar in structure to the wrench 15 and includes a pair of curved jaws 216, 217 at the ends of the elongated handle 218. The jaw 216 is larger than the jaw 217 and protrudes more prominently from the handle 218 than the jaw 217. The jaws 216, 217 and the central plate 224 are defined by a pair of panels 220, 222, which are sandwiched between the handles 218 to provide space in the jaws 216, 217. > A pair of elongated flat plates 226, 228. The long flat forks 226,228 have the same curved shape as the flat plates 26,28 of the wrench 15, and are movably mounted to the panel 22,222 with the distal pin and groove structure of the repositioned position. That is, the capping groove is in the long flat plate 226,228 (not in the panel defining the particles 216,217), and the distal pin is fixed to the panel 22,222 (instead of the long flat plate). More specifically, the ' elongated flat plate 228 includes an arcuate distal groove 242 which receives a pin 232 fixed in a circular hole 231 of the panels 220,222. One of the V-shaped distal grooves 246 includes a pair of raised portions 248, 2 50 and receives a pin 236. The pin 236 is fixed in a circular hole 231 in the panel 220,222. (10) Comparing FIG. 10 with FIG. 3, it can be seen that the V-shaped groove 246 is relatively positioned with respect to the V-shaped groove 46 of the wrench 15. That is, the V-shaped base of the groove 246 is oriented toward the proximal end of the handle and the elongated flat plate 226 (not far from the handle and toward the distal end of the flat plate). The proximal pins 234 are frozen in holes 233 in the proximal ends of the plates 226,228 (as described above, they are aligned with each other), and are received in the proximal grooves 244 in the panels 220,222 (only one of which is shown in Figure 9) ). The protrusions 248 of the grooves 242, 244 and the grooves 246 apply the Chinese National Standard (CNS) A4 specification (210X297 mm) along the paper size of the workpiece center: ~~ 2D ~~-A7 V. Description of the invention 丨 8) c The same arc for the center of the curve is oriented and printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs and defines the arc length of 10-12 degrees. The rising portion a of the groove 246 faces the mosquito orientation centered on the center of the hole 233 in the flat plate 226, is transverse to the convex portion 248 and extends radially inward from the convex portion 248 (refer to FIG. Ha). The proximal end of the raised portion 25 (at the proximal end of the raised portion) is curved inwardly toward the workpiece to a distal end (radially spaced from the inner raised portion 248 along a 9-10 degree arc length). -The blade spring 250 (Fig. 10) is placed at the end of the handle 218 on the base 223 of the wrench head. Leaf spring 25¾ ^ —The end 252 is locked in the groove 254 of the central plate 224 (the groove 254 is shown at an oblique angle with respect to the central longitudinal axis of the handle 218, but may be replaced with respect to the central longitudinal axis Straight) ^ The opposite end 256 of the leaf spring 250 is joined to the curved outer surface of the elongated flat plate 226, so that the flat plate 226 is biased inward toward the center c of the wrench head and resists the workpiece. The long flat plates 226, 228 are shown Separate from the rest of the wrench 215 in Figures 11A and 11B (top view), Figures 12A and 12B (side view), and Figure 13 (sectional view). Except for their different distal groove configurations, the plates 226, 22 and 8 are constructed identically to each other. Like the long flat plate of Wrench 15, the flat plates 226, 228 are kidney-shaped and provide all sixteen work-engaging surfaces 130a, 130b and eight triangular spires 230, which are arranged over the entire 240-degree arc. Therefore, the surfaces 230a, 230b on the flat plates 226, 228 are arranged corresponding to the so-called "twelve-point design". (That is, if the plates are to be extended to define a 360-degree profile, they will provide twelve triangular spires 23 or "points", and 廿 four workpiece engagement surfaces 230a, 230b). The surfaces 230a, 230b alternate with each other along the plates 226, 228, as shown in 11A * 11B. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) -21 (Please read the precautions on the back (-installation-" ^ page) order-line economy department central economy bureau staff consumer cooperation. The company printed A7 __B7 _ V. Description of the invention l9) The proximal end of each of the elongated flat plates 226, 228 is reduced in thickness at the shoulder 229 to define a shelf portion 229a at the base of the flat plate. The shelf portion 229a is approximately half the nominal thickness T of the remaining portions of each of the flat plates 226,228. The areas including the joint surfaces 230a and 13Ob in the plate are thickened with integrated flanges 237,239, respectively, as shown in Figure 13 (for easy observation, the interval between the long plate and the panels 220,222 is exaggerated). The flanges 237,239 increase the contact area of the surfaces 230a, 230b that are in contact with the workpiece, increasing strength. Because the plates have the same shape, when the plates 226,228 are installed in the jaws 16,17 and their elongated surfaces 23 (^, 2301 > face each other, one plate (e.g., plate 226) faces up 'the other ( The flat plate 228) faces downward. As a result, the rack portions 229a of the two flat plates will overlap each other, and their holes 233 are in a registered and aligned state. The user operates the wrench 215 in the same manner as the wrench 15 described above. Simple restatement After the jaws 216, 217 are placed on the workpiece W from the side, the wrench 215 is rotated in the driving direction (for example, clockwise in Figs. 9 and 10) to rotate the workpiece W. Figs. 9 and .10 show the wrench 215 is in the "locked" position, where the pin 232 is positioned near the groove 242 'the pin 234 is positioned at the far right end of the groove 244' and the pin 236 is positioned at the distal end of the groove projection 248. When When the user rotates the handle 218 in the driving direction D, the pressure is generated between the workpiece W and the surface 230a of the flat plates 226, 228. This pressure drives the flat plates 226, 228 (and the respective groove protrusions 248 and grooves 242) outward from the center C Leaving also forces the proximal end of the tablet 226,228 and locks 234 faces inward toward the center C. The surface of the groove 242 is engaged with the pin 232, and the groove protrusion 248. The paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) _ _ ^ --- ------- Installation-- (please read the notes on the first page 0 ~ ^ this page) Order-line _ Printed on paper by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, the standard of Chinese paper (CNS) Α4 (210X297 mm) A7 B7 V. Description of the invention f) The surface is engaged with the pin 236, and the pin 234 is engaged with the groove 244 and the rightmost surface. This movement can be avoided. Accordingly, the flat plates 226, 228 remain fixed relative to each other in the jaws 216, 217, during which the workpiece W is grasped at the elongated surface 230a, and the workpiece W is rotated in the driving direction. When the handle 218 is turned in the opposite direction (e.g., counterclockwise), a ratcheting engagement occurs in which the plates 226, 228 slide on the surface of the workpiece, thereby allowing the workpiece to remain stationary. The ratcheting is performed as follows. When the handle 218 is first turned in the ratcheting direction, the pressure applied by the workpiece to the engaging surface 230b causes the plates 226, 228 to remain stationary, while the handle 218 rotates. As a result, the groove 244 slides on the pin 234 until the pin 234 reaches the position 234 'of the left end of the groove 244 (as shown in Fig. 9). At this time, the pins 232, 236 (which are held in the jaw arms 216, 217) respectively slide through the groove 242 and the groove protrusion 248 along the common curve arc of the groove until the pin 232 reaches the groove protrusion 248. Proximal (ie lower). The wrench 215 is moved to this "non-locking" position (which can be considered as turning the plate 226,228 in a clockwise direction relative to the handle 218 or in the counterclockwise direction relative to the plate 226,228). The movement requires a handle of about 10-12 , Which corresponds to the arc length of the groove. When the wrench 218 is further rotated counterclockwise (for example, 30 degrees in the 12 o'clock configuration shown in FIGS. 9 and 10), the workpiece W applies pressure to the engaging surface 230b, which then applies an outward pressure to the plate 226 on. When each corner of the workpiece slides over the elongated surfaces 230a, 230b of the plate 226, this outward pressure causes the plate 226 (and the groove 246) to move outward from the center C about the center point 245 of the position 234 'of the pin 234 Pivot. Transfer at the pivot of flat plate 226 ---. 23----------- load-(Please read the caution page on the back first)

, 1T-line _ Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention f) During the operation, the tablet 228 remains stationary. The pivoting movement of the flat plate 226 is restricted by the protrusion 250 of the groove 246. That is, when the flat plate 226 is turned, the groove projection 250 slides on the pin 236. The leaf spring 250 biases the flat plate 226 inwardly toward the center C. Therefore, when the corner of the workpiece is moved toward the cut groove 231, the leaf spring 250 drives the flat plate 226 to pivot inward about the center point 245 of the pin 234 at the position 234 ', and returns to the fully engaged state with the surface of the workpiece. In the 12 o'clock design shown in Fig. 9, I need to rotate the handle by about 30 degrees to make the jaws 216,217 around one of the corners of the hexagonal workpiece to ratchet. Because the wrench 215 is a symmetrical structure, the drive and ratcheting engagement directions can be easily reversed by flipping the wrench 215 relative to the workpiece (ie, the jaw is at 216 on the right when viewed from above). In this orientation, the driving direction D is counterclockwise, and the ratcheting engagement direction R is clockwise. Among other advantages, the provision of the distal grooves 242, 246 in the elongated flat plate 226, 228 allows the V-shaped groove 246 (and the pin 236) to be positioned more radially away from the center point C (that is, toward the outer periphery of the plate 226). This is partly because the convex portion 250 of the groove 248 is curved inwardly toward the workpiece, rather than outward from the workpiece (such as the convex portion 50 of the wrench 15). Therefore, when the pins 232-236 move on the periphery, less torque is applied to all the pins 232-236, thereby reducing the danger of cutting the pins and increasing the overall strength of the wrench 215. It should be understood that the protrusion 250 is smaller than the protrusion 50 of the wrench 15 (Fig. 3) for the following reasons. Although the curve of each protrusion 50, 250 is centered about the respective proximal pin, the protrusion 250 is positioned closer to the proximal pin 234 radially than the protrusion 50 to the proximal pin 34. This paper is also applicable to the China National Standard (CNS) A4 specification (210X297 mm): ---------- install-(Please read the precautions on the back page first)

• 1T line V. Description of the invention t A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. Allowing the convex portion 250 to define a shorter length than the convex portion 50, even if the arc angles of the two convex portions are the same . Since the protrusion 250 has a relatively short length, the amount of the protrusion 250 cutting into the protrusion 248 will not be as much as the amount of the protrusion 50 cutting into the protrusion 48. As a result, the pin 236 is more completely seated in the V-shaped groove 246, which reduces the chance that the plate 226 is forced to move from the projection 248 to the projection 250 during driving. Moreover, because the pins 23 ^, 236 are fixed to the flat plates 220,222 at both ends, when the wrench 21 5 applies a large driving t · force to the workpiece, the pins are less likely to bend or deviate except to increase the surface contact with the workpiece and decrease. In addition to the strength of the flat plates 226, 2 "8, the flanges 237,239 reduce the wear of both the surfaces 230a, 230b and the surface of the workpiece. In addition, as shown in FIG. 13, when the wrench 215 is flush with the surface S immediately adjacent to the workpiece W, the workpiece is completely locked in a completely secure position between the flat plates 226, 228. This reduces the risk of the wrench 215 sliding off the workpiece. The wrench 215 may have more or less workpiece engaging surfaces. For example, referring to Figures 14A and 14B, the elongated flat plates 226 ', 228' each have only two workpiece engaging surfaces 260. As mentioned above, with this structure, the wrench will have a so-called "six-point" design (as discussed above with regard to Figures 6 to 8). Each surface 260 includes a driving portion 230a 'and an adjacent ratchet-type engaging portion 230b'. That is, during the driving operation, when the handle 218 is rotated, the driving portion 230a 'applies pressure to the workpiece to rotate the workpiece. During the ratcheting engagement, the workpiece applies pressure to the ratcheting engagement portion 230b 'to cause the plate 226 to pivot. Referring to Figures 15A to 15C and 16A to 16B, the movable plates need not be the same or symmetrical with respect to the central longitudinal axis of the wrench. The wrench 315 has a pair of movable plates with different configurations positioned at the distal end of the handle 320 in the jaws 316, 317 (please read the precautions on the back page first). • Stitching and threading. The paper size is applicable to the Chinese National Standard (CNS) A4 Specifications (210X297 mm) 25 A7 Printed by the Consumers Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs B7 V. Invention Description f) 326,328. The plate 326 (shown separately from the wrench in Figure 16) is smaller than the plate 328 (Figure 16B). Any of the distal pin-groove arrangements described herein can be used in this embodiment. In the embodiment of the wrench 315 shown in these figures, the distal grooves 342, 346 are in the flat plates 326, 328, and the distal pins 332, 336 are installed in the panel of the wrench. The plates 326, 328 include a proximal hole 333 that aligns with and receives the proximal pin 334, which then passes through a proximal groove 344 in the face of the wrench. The wrench 315 operates in the same manner as described above for the wrench 215. Figure 15A shows the wrench 315 in the locked position, with the distal pin 336 locked in the protrusion 348 of the groove 346. Figures 15B and 15C depict the wrench 315 during a ratcheting engagement in which the distal pin 336 is moved forward and backward within the projection 350 of the groove 346. (Figures 15B and 15C are shown as if the panel had been removed before the wrench, but the leaf springs attached to the plate 326 in other embodiments are not shown). Among other advantages, the proximal pin 334 is positioned relatively close to the groove protrusion 350 compared to other embodiments. This allows the length of the protrusions 350 to be shortened and the angle between the protrusions 348, 350 to be increased. Therefore, more material exists at the joint 360 (Figure 16A) between the protrusions. When the user applies a large driving force to the workpiece, a larger holding force is provided to keep the pin in the protrusion 348. (That is, the locked position). Referring to Figures 17A to 17E, the V-shaped distal groove of any of these embodiments of the applicant's wrench can be made smaller than those shown in the other drawings. For example, consider the flat plate 226 of the wrench 215 shown in FIG. 17A. Figure 17B shows how the distal pin 236 moves in the groove protrusions 248, 250. Please read the precautions on the back when you pull the gutter. The paper size is applicable to the Chinese National Standard (CNS) M size (210X 297 mm)- 26 A7 ______B7 V. Description of the invention f) The hand 215 moves between the "locked" and "unlocked" positions. What is noticeable is that the 'pin 236 does not move from the beginning to the end of the "V" shape. As shown in FIG. 17C, the groove 246 can be reduced in size while still allowing the movement of the pin 236. The new shapes of the grooves 246 'and the protrusions 248', 250 'are shown in Fig. 17D (the flat plate 226 is in Fig. 17E). Due to the small size of the groove 246, as in the above embodiment, the plate 226 will open during ratcheting (ie, 'pivot away from the workpiece') while the wrench is rotated to the non-locking position. Non-keep stationary, J [until the flat system is completely non-locking. Among other advantages, reducing the size of the V-shaped groove minimizes the amount of material removed from the plate and increases wrench strength. In addition, when the wrench is moved between the locked and non-locked positions, the smaller grooves more advantageously guide the distal pinner-connection 260 'between the protrusions (Fig. 17E). As a result, the pin returns to the locked position even more advantageously than the other embodiments. Referring to Figures 18A and 18B, the grooves for the pivotable plate do not need to be double raised as in the previous embodiment. The wrench 415 has a pair of elongated movable plates 426, 428 of different configurations. They are positioned on the handle 418. The jaws at the distal end are 416,417. The plates 426,428 include respective distal grooves 446,442, which respectively receive distal locks 436,432 mounted on the face plates 42,422 of the wrench. The plates 426,428 include a proximal hole 433 ' which is aligned with and receives the proximal pin 434, which then passes through a proximal groove 444 in the face of the wrench. (Alternatively, as in the previous embodiment, the positions of the distal grooves 442,446 and pins 432,436 are interchangeable—that is, the distal grooves 442,446 may be formed on the faceplate of a wrench, and the pins 423,436 may be fixed to a flat A7 B7. Note f) plates 426,428). Referring also to FIG. 19, the outer shape of the distal grooves 442,446 is shown in detail. The distal groove 442 of the plate 428 includes a distal end section 442a extending between points 470,472 and a continuous proximal end section 442b extending between points 470 and 474. Point 470 represents the center position of the pin 432 at the junction between the sections 442a, 442b 'points 472,474 represent the center position of the pin 432 at the opposite ends of the sections 442a, 442b. t. The distal section 442a extends along the arc of curve 476 and is centered along that arc. The center of the radian 476 was 27 degrees measured between the point C (workpiece center) 'point 470 and 472 in the opening between the jaws. The proximal section 442b is curved outwardly with respect to the distal section 442a to form an arc 476 extension of about 3 degrees at about point 470, so that the entire arc length of the groove 442 is 30 degrees. Due to the outwardly curved arc, point 474 is offset radially outward from the path defined by arc 476 (the center of which is at the center of pin 434) about 1_2 degrees (along the arc centered at the center of pin 434). Therefore, when the lock 432 moves in the section 442b between the points 470, 474, the plate 428 moves simultaneously along the arc 476 by 3 degrees, and moves 1-2 degrees inward toward the workpiece. Printed by the Consumer Cooperatives of the Central Bureau of Accreditation of the Ministry of Economic Affairs (Please read the precautions on the back \ 0 ~ > page 4)

The distal groove 446 of the I plate 426 includes a proximal end section 446a extending between points 480,482 and a continuous distal section 446b extending between points 482,484. Point 482 represents the center position of pin 436 at the junction of sections 446a, 446b, and point 480,484 represents the center position of pin 4f36 at the opposite ends of sections 446a, 446b. The groove 446 extends substantially along the arc length of the curved arc 486, which is concentric with the arc 476, i.e., the arc 476,486 defines a section of a circle centered at the point C. The arc length of the groove 446 is also 30 degrees (the section 446a is 27 degrees, and the size of the paper is adapted to the Chinese National Standard (CNS) A4 specification (210X297 mm). The consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs has been printed by Du A7 _ B7 __ 5. Description of the Invention I) Segment 446b is 3 degrees) However, for illustrative purposes, the proximal end portion 446a of the groove 446 is transverse to the arc 486, rather than centered along the arc 486. In particular, as section 446a extends from approximately point 482 to point 480, proximal section 446a circles inwardly about 7-8 degrees. As a result, point 480 is offset radially inward from the course defined by arc 486 by approximately 7-8 degrees of radian. The distal section 446b is curved outward with respect to the proximal section 446a, and the far point 482 forms an arc 486 extension of about 3 degrees, so that the entire I * arc length of the groove 446 is 30 degrees. Due to the outward arc, the path defined by point 484 梃 arc 486 is offset radially outward by about 1 to 2 degrees (the center of arc 486 is also located at the center of pin 434). Therefore, when the pin 436 moves in the section 446b between the points 482, 484, the flat plate 426 moves simultaneously along the arc 486 3 degrees, and moves 1 to 2 degrees inward toward the workpiece. The proximal groove 444 includes arcuate sections 444a, 444b (Figure 18), centered along another section of the same arc as curve 476,486. (I.e., grooves 444 and arcs 476,486 are different sections of a circle centered on point C). Unlike the distal grooves 442,446, the two sections of the proximal groove 444 follow the same arc. Section 444a defines an arc length of 27 degrees. For illustration purposes, section 444b forms a 3-degree extension of section 444a. The proximal grooves 444 are positioned so that when the elongated flat plates 426,428 are in their rest position (as shown in Figure 18A and described below), the pins 434 are positioned at the junctions of the sections 444a, 444b. The elongated flat plates 426,428 are kidney-shaped, and each of the distal and proximal workpiece engaging surfaces 430a, 430b meet at a notch 431. Therefore, the settings of the surfaces 430a, 430b on the flat plates 426, 428 correspond to the above-mentioned six-point design. The overlapping proximal ends of the elongated flat plates 426, 428 are stepped in thickness at a shoulder 429, respectively, to define a pick-up portion 429a at the base of the flat plate. Netbook- € ^ " Standards applicable _ China National Standards ((;; 1 ^) 8 4 specifications (21 (^ 297mm i " —29 ~~ '(Please read the precautions on the back (/ this Page)-installation · ---- order-line 'A7 B7____ 5. Description of the invention f) The frame portion 429a is about half of the nominal thickness of each plate 426,428. The proximal end 429a of the plate 426 includes a hole 464 for receiving One end of the spiral spring 450. The opposite end of the spring 450 is connected to a protruding post 462 'which is mounted on the wrench handle 418 away from the center plate 424. Referring to Figures 20A to 20C, the spring 450 causes the plate 426,428 to Pressed to their rest position, where the distal workpiece engagement surfaces 430a of the plates 426, 428 are parallel to each other and separated by an interval S * approximately the same as the workpiece width (Figures 18 and 20A). During use, the user is from the side While sliding the jaws 41.6,417 onto the workpiece, engage the wrench 415 to the workpiece (not shown) ^ When the plate 426,428 is in the position shown (that is, the plate 426 is on the left and the plate 428 is on the right), the user clicks Turn the handle 418 in the direction of the hour hand (Figure 20B) to drive or rotate the workpiece, and set the handle 418 Turn counterclockwise (Figure 20C) for ratcheting operation. Note that when the plates 426,428 are in their rest position, the spring 450 positions the pins 432,434,436 in the pair of sections of the respective grooves 442,444,446 (The position of pin 444 is shown in Figure 18A) "In particular, pin 432 is positioned at point 470 (Figure I9) and pin 436 is set at point 482. When the user turns the handle 3 degrees in the driving direction, the The force of the workpiece compresses the spring 450 and moves the pins 432,434,435 to the opposite ends where they are completely set at the groove sections 442b, 444b, 446b. Because the sections 442b, 446b are positioned radially outward of each arc 476,486 So that the movement of the pins 432,436 into sections 442b, 446b (to points 474,484, respectively) causes the elongated flat plates 426,428 to pivot toward each other around the pins 434 in order to hold the workpiece. In other words, the distal workpiece engagement surface 43 The scale of this paper between 〇a applies the Chinese National Standard (CNS) A4 specification (210X297 mm) printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention f) The interval s' from standing The interval S is reduced. Among other advantages, this gripping feature allows the wrench 415 to tightly grip and rotate a slightly undersized workpiece. In addition, this gripping action helps compensate for the jaws 416,417 caused when the wrench 415 grips the workpiece Possible broadening, which may cause the plates 426,428 to open slightly and slide on the workpiece. Comparing Figures 20A and 20C shows the action of the plates 426,428 during ratchet engagement. When the user turns the handle counterclockwise from the rest position (Fig. 20A), the force acting on the workpiece W causes the pins 432,434,436 to oppose the bias of the spring 450 toward the groove sections 442a, 444a within the grooves 442,444,446 (section 18)) The opposite end of 446a moves. Since the groove section 442a is centered along the arc 476 (Fig. 19), the plate 428 moves in a circular path relative to the work center C. In contrast, since the groove section 446a spirals inwardly with respect to the arc 486 (FIG. 19), the flat plate 426 pivots about the pin 434, and spirals away from the flat plate 428 and the work center C. In other words, the flat plate 426 is spread 7 degrees from the flat plate 428 (offset from the point 480 of the arc 486, FIG. 19), thereby allowing the workpiece engaging surface of the flat plates 426, 428 to slide across the corner of the workpiece. Figure 20C shows the plates 426,428 with the ratchets engaged in their fully open position. At this point, the user has turned the handle of the wrench in the ratcheting direction from the rest position by about 27 degrees (that is, the arc length of the grooves 442a, 444a, and 4446a) (or 30 degrees from the grip position in Figure 20B) ). The workpiece engagement table slides fully around the workpiece corners, and the spring 450 returns the plates 426,428 to their rest position (Figure 20A). The user can then continue with the ratchet spraying operation, or can turn the handle clockwise to rotate the workpiece. One of the advantages of this wrench embodiment lies in the additional simple manufacturing. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (21〇 × 297 mm) j! ---------- install-(please First read the note on the back 0 / this page) Order A7 B7 V. Description of the invention f) One ~ " — 'nature. The spiral groove 4 凹槽 is easier to set up and cut than the v-shaped groove discussed in the above embodiment, and may be more wear-resistant for long-term use. If the grip feature is not required, the ' groove sections 442b, 444b, 446b may be omitted. (Alternatively, the groove sections 442b and 446b may be positioned such that points 474,484 are located on arcs 476,486, respectively). The features of the wrench 415 may be applicable in other embodiments described herein. For example, extension lines similar to the groove sections 442b, 444b, 446b may be formed in the grooves of other embodiments of the wrench to provide gripping features. The distal groove 446 may have other configurations, in which point 480 is positioned radially inside the arc 486 (so that the plate 426 pivots outward during ratchet engagement) and point 484 is positioned radially outside the arc 486 (with Provides grip features). For example, the groove 446 may be defined with a straight line between the points 480 and 484. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Although only the distal groove 446 is described as crossing the curved arc 486, and the groove 446 extends along the curved arc 486, the groove 442 may (or replace) Orientation across curve 476. For example, section 442a may curve inwardly with respect to arc 476 such that point 472 (FIG. 19) is positioned radially inward of arc 476. Orienting the two grooves 442,446 across the curved arc allows the two flat plates 426,428 to pivot outwardly about the pin 434 away from each other during ratchet engagement. Therefore, the degree to which each plate is pivoted and the amount of rotation required for the handle to move the plate to the fully open position during the ratchet engagement can be reduced by half, thereby reducing the stress applied to the spring 450. Figure 21 shows a wrench 510, in which the two grooves 542,546 of the two flat plates 528,526 are oriented transversely to the curved arc 576,586 (the grooves are roughly along the paper scale and apply the Chinese National Standard (CNS) A4 size (210X297 mm) ) A7 B7 V. Description of the invention f) (Please read the precautions on the back ^ ″ ¥ page) Extending along these curved arcs). The center of the arc 576,587 is at the center point C of the opening between the jaws 516,517. The proximal groove 544 (Figure 23A) extends along a curved arc identical to the arc 576,586 and includes two concentric sections 544a, 544b. The distal section 542a of the groove 542 is radially inwardly offset from the arc 576, so that when the pin 532 is positioned at the far end of the groove (point 572), the plate 528 can pivot away from the workpiece about the proximal pin 534 . The proximal section 542b of the groove 542 is radially outwardly offset from the arc 576 to provide the gripping feature described above when the pin 532 is positioned at the proximal end of the groove (point 574). Pin 532 is shown to be positioned at the junction of points 542a, 542b (point 570), which intersects arc 576. The groove 546 is straight between its proximal and distal ends (defined by points 580, 584, respectively). The proximal section 546b of the groove 546 is positioned radially inward of the arc 586, so that when the pin 536 is positioned at the proximal end of the groove (point 580), the plate 526 is about the proximal pin 534 away from the workpiece pivot. turn. The distal section 546b of the groove 546 is radially outwardly offset from the arc 586 to provide the above-described gripping characteristics when the pin 536 is positioned at the far end (point 584) of the groove. Pin 536 is shown at the junction (point 582) of sections 546a, 546b, which intersects arc 586. The proximal end of the plate 526 is connected to a spring similar to that shown in Figure 18B. The operation of the printed wrench 510 of the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs is depicted in Figures 22A-22C and 23A-23C (they are the same except that the latter set of figures shows the uppermost plate and Groove 544). In the starting position (Figs. 22A, 23A), a spring (not shown) biases the plate 526,528 to its rest position, while the workpiece engaging surfaces 530a are oriented parallel to each other, and pins 532,534,536 are positioned in each groove 542,544,546 sheets The dimensions apply to the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 ____B7 V. Description of the invention 丨 1) The connection of the two sections. As shown in Figures 22B and 23B, when the user turns the wrench handle clockwise (eg, 3 degrees with respect to the wrench 415 described above), the pins 542,544,546 are moved to the groove sections 542b, 544b, 546b, thus providing as above The gripping action against the workpiece (not shown) is described. As shown in Figures 22C and 23C, when the user turns the handle in the opposite direction, the force exerted by the workpiece on the workpiece engaging surface causes the pins 532,534,536 to move to the opposite ends of the respective grooves 542,544,546. In particular, the pins 532, 536 move to the distal and proximal ends of the groove sections 542a, 546a, respectively. Since the distal end of the groove section 542a and the proximal end of the groove section 54 are radially positioned inside the arc 576,586, the movement of the pins 532,536 therein causes each plate 526,528 to pivot outward from the center C. When the handle of the wrench has been fully rotated (eg 45 degrees) to allow the workpiece engaging surface to slide fully around the corners of the workpiece, the spring returns the plates 526,528 to their rest position. In other embodiments, the elongated surface of the movable plate may be a curved arc (e.g., convex with respect to the opening 21) instead of a flat surface. Other numbers of angular settings of the oblong surface can be used. The wrench of the wrench does not need to be in line with the jaw or on the same plane as shown in the figure. On the contrary, like a typical open end wrench, the handle can be at an acute angle relative to the rhyme, on the plane of the jaw or not on the plane of the ridge, or both. The groove for biasing the leaf spring can be parallel ^ Handle shaft In fact, the leaf spring can be fixed to the handle Y in other ways, and the paper size is based on the CNS) A4 ^ m (210 × 297 ^ Τ A7 B7) 5. Description of the invention Component reference table S Space W Workpiece C Center 15,115,215,315 Wrench 16,17,116,117,216,217,316,317 Jaw 18,118,218 Handle 19 (wrench) Head 20,22,220,222 Panel 21 Opening 23,223 Base 24,224 Central plate I 26,28,126,128,226,228,326,328 Flat fe 29.129.229 Shoulder 29a, 229a Shelf 30.130.230 Triangular spire 30a, 30b, 130a, 130b , 230a, 230b surface 31.131.231 groove 31a, 31b round hole 34 ', 234' position 32,34,36,232,234,236,332,334,336 pin 42,44,46,242,244,246,342,344,346, groove 45,245 center point-. 48 (; 50,448,150,248,250,348,350 read the first part Note for Back Λ Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 〇, 2 $ 〇 Leaf spring 230a5 Drive 230b 'Ratcheting engagement part 233,333 丨 Hole 237,239 Flange 246' Groove 248 ', 250' Boss 252 End 256 End 260 Surface 260 'Connection 320 Handle 360 Connection 415 Wrench 35 This paper size is in accordance with Chinese national standard (CNS> A4 specification (210X 297 mm). Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. A7 B7. 5. Description of invention f) 416,417 Jaw 418 Handle 420,422 Panel 424 Center plate 426,428 Flat 429 Shoulder 429a Shelf 430a, 430b Surface 432,434,436 Pin 442,446 distal groove. 442a, 444a, 446a Section 442b, 444b, 446b Section 450 Spring 462 Boss 1 · 464 Hole 470,472,474,482,484 476 Curve 51 486 arc 510 wrench 516,517 jaw 526,528 flat plate 530a workpiece engaging surface 532,534,536 pin 542,544,546 groove 542a, 544a, 546b section 542b, 544b, 546b section 570,572,574 points 576,587 arc (please read the precautions on the back page first)-installation Order _-The size of the paper is applicable to China National Standard (CNS) A4 (210 X 297 mm) -3 :

Claims (1)

Scope of patent application: · A type of wrench, including ...,-pairs of jaws set on a hand, these jaws are used for the boundary, the opening σ of the guard, and 8-pairs of flat plates, each including-adjacent to the The opening of the guard of σ = the money is chosen to move on the slab of the slab. 1) The first position-the slabs are relative to each other in the first position: essentially fixed, so the handle The rotation in the first direction is 40%, the flat plates grasp the workpiece between the material-engaging surfaces, and rotate the workpiece in the first direction, and b) the second position, the first flat plate in the second position may be opposite to The second plate is pivoted 'so that the rotation of the handle in the second (opposite) direction causes the first plate to slap and allow the engaging surfaces to slide on the workpiece, thereby allowing the workpiece to remain stationary. 2. The wrench in the scope of patent application, wherein the flat plates are installed for selective movement in response to the rotation of the handle. Printed by the Central Bureau of Standards of the Ministry of Economic Affairs—Industrial and Consumer Cooperatives— 3. As for the wrench in the scope of patent application, the first plate has a proximal end and a distal end, the first plate is installed on the first jaw, so The distal end is substantially immobile in the first position and can be dragged relative to the second plate in the second position. 4. If the wrench of the scope of patent application item 3, further includes: a distal pin on the distal end of the first flat plate or on one of the distal regions of the first jaw, and a The distal groove is printed on the distal end of the first plate or the first paper size to the Chinese National Standard (CNS) A4 (210x297). ABCD Printed by the Consumer Standards Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Patent range jaw. On the other side of one of the far-end areas of I5, ^ When the plate is in the-position, the far end · S is placed in the-part of the through-end groove, and when the plate is in the second position When in position, the distal pin is at the second portion of the distal groove. 5. The wrench according to item 4 of the scope of patent application, wherein the first portion of the distal groove is oriented so that when the wrench is turned in the first direction, the distal pin engaged therein causes the first plate to be far away. The end is substantially fixed relative to the second flat and plate, and when the wrench is turned in the second direction, the second portion of the distal groove is oriented to allow the distal end of the first flat plate to pivot relative to the second flat plate. 6. The wrench as claimed in item 5 of the patent scope, which further includes a proximal pin at the proximal end of the second plate, the pin is housed in a proximal groove. The proximal groove is provided in the A 'proximal groove' and a first portion of the distal groove in a proximal region of a jaw are oriented to allow the first plate to be selectively moved between a first position and a second position. 7. As for the wrench in the 6th area of the patent application, wherein the first groove and the first portion of the distal groove are oriented along a common curved arc, the curve has a center at the opening, and the The second part of the gas in the distal groove is set transversely to the curved arc. "8. For the wrench of item 4 or 6 of the patent application scope, wherein the distal pin is at the distal end of the first plate, and the distal An end groove is located in the distal region of the first jaw. 9. If the wrench of item 4 or 6 of the patent scope is applied, 'where the remote pin is the standard of the paper standard (CNS) 纟 4 secret (21Qx297 public director) ~~' I I--1 I n —y ^ n I (Please read the precautions on the back before filling in this page) Order A8 B8 C8 ______ D8 VI. The scope of patent application is located in the distal region of the first jaw, and the distal groove is located in The first plate is old winter distal. 10. If the wrench of the scope of patent application No. 6 further includes a distal pin at the distal end of the second flat plate, the infringement lock is accommodated in a distal groove, and the distal four groove is provided in the A distal region of the second jaw, and a proximal lock at the proximal end of the second plate, the proximal pin is received in the proximal groove, the proximal recess, the groove and the distal recess. The slot system is oriented to allow the second plate to be selectively moved between a first position and a second position. 11. As for the wrench in the scope of patent application No. 4, the far end of the car is set so that the first and second parts Daxia define the shape. 12. For example, the “n-kill” of the n-th item of the scope of patent application, wherein the distal end groove is set so that the V-shaped base is oriented toward the handle. 13. The wrench of item n in the scope of patent application, wherein the distal groove is set so that the V-shaped base is far away from the handle orientation. 14. For example, the wrench in the first patent scope of Shenyan Patent also includes a spring positioning to bias the first plate toward the mirror p. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs. 15. If the wrench in the U.S. scope of the patent application, the flat plate and the spring are set so that the turning of the wrench relative to the workpiece can make the wrench in the first and the first. The operation in the two directions is reversed. 16. For the wrench in the scope of patent application, the flat plates have the same configuration. 17. If applying for the wrench of item 1 of the patent scope, these flat plates have the paper size applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) A8 B8 C8 D8 Printed by the Consumer Cooperative of the Central Broadcasting Bureau of the Ministry of Economic Affairs 6. Structures with different patent application scopes. 18. A wrench as claimed in claim 1, wherein each of said plates has a plurality of engaging surfaces. 19. The wrench as claimed in claim 18, wherein each of the engaging surfaces is elongated so as to engage one surface of the workpiece and a large portion of the length of the surface. 20. The wrench as claimed in claim 18, wherein the joint surfaces are flat. 21. For the wrench of the scope of application for item 18, wherein the joint surfaces are set to define an angle therebetween, which is quite a red piece; select the angle between the surfaces. A 22. The wrench according to the scope of the patent application, wherein the portion of each plate including the joint surface has an increased thickness relative to the other portions of the plate. 23. As the wrench for applying for patent item No. 丨, in which the equal plates are installed on the jaw, so that when in the first position, the poor plates are incapable of expanding relative to each other due to the flat plates-unable to expand each other. Do not move. 24. If the wrench of the scope of patent application No. 23, its flat plate is installed so that when in the-position, its distal end can move towards another flat. The slatted plate system is mounted so that when in the-position, their distal ends can be moved towards each other. 26. If the wrench of the scope of application for the patent, it also includes the paper size towards Guan Jia Pi (CNS) A4 · (210X297 ^^ (Please read the precautions on the back before filling out this page) / 夂, the scope of the patent application is a distal lock 'on the m-th distal end or its towel in the distal region of the first jaw, and __ catch end groove, (read the precautions on the back first (Fill in this page again.)] Set on the other of the far end of the first plate | or-the axial end area of the -jaw, the distal groove is across the center in the opening. The curved arc is oriented, the first part of the distal groove intersects the solitary ridge, the second part of the distal groove is positioned radially outward of the arc, and the distal pin is The system is silently placed in the distal groove and the first part, and the second part of the distal groove can be moved in the second position to cause the first plate to pivot relative to the second plate. Rev. 27. For example, the 26th item of Shenyan's patented gas enclosure, where the first part of the distal shoulder $ slot is at its distal end, and the second part of the distal groove is at its proximal end. ^ 28. For the wrench of the scope of application for item 26, wherein the first part of the distal groove is at its proximal end and the second part of the distal groove is at its distal end. Printed by the Consumers' Cooperative of the Central Bureau of Standards. 29. If the wrench of the scope of the patent application No. 26, the first and second parts of the distal groove are curved or curved. 30. If the scope of the patent application is No. 26 Wrench, wherein the first and second parts of the distal groove are linear. 31. For the wrench of the scope of patent application No. 26, wherein the distal groove further includes a region 'which is oriented to receive the distal end Sales caused the first tablet to move toward the second tablet, and the handle was turned in the first direction. The paper size was A4 ^ (210X297, ^):, 4 1 ^ Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. A8 B8 C8 ___ D8 _ VI. Hold the workpiece while moving the scope of the patent application. 32. If the scope of the patent application 专利 31 item _ the area of the groove at the distal end of the application is located radially outward of the arc. 33. If the scope of the patent application-the wrench of item 32, the center part of the US center and the area is at the distal end of the distal end of the groove, the first part is at a distal end of the distal groove. Proximity: 34. If the wrench of the scope of patent application No. 32, where the- And the region is at a proximal end of the distal groove, and the second part is at a distal end of the distal groove. 35. For example, the wrench of the scope of the patent application No. 26 is further included in the — plate A proximal pin at the proximal end is received in a proximal groove provided in the first rhyme and a proximal region, and the proximal pin is disposed in the proximal groove when in the first position. The first part, which can be moved into the second part of the proximal groove in the second position, the first plate pivots away from the second plate when the second position is in the acoustic second position. 36. For example, the wrench of the scope of patent application No. 35, where the first part and the second part of the proximal groove of the coin are oriented along the arc, -37. If the wrench of the scope of patent application No. 26, it further includes the A distal pin is disposed on one of the distal end of the second plate or one of the distal regions of the second display portion, and the second distal groove is disposed on the distal end of the second plate or The other of the distal region of the second jaw, the second distal pin is arranged at the first position to listen to the first part of the second distal groove, , And the 7th paper can be moved into the second position to apply the national standard (HS) A of the country's paper --- (please read the precautions on the back before filling this page)-order-the scope of patent application The second part of the slot. 38. If the wrench of the scope of patent application No. 37, the first part of the groove ^^ ^ is at its proximal end, and the second part of the second .. groove is at its-far. end. 39 .. If the year 37 of the scope of patent application is applied, wherein the first part of the second distal groove is at its distal end, and the second part of the second distal groove is at its distal end. Proximal end, '40. As claimed in the patent application, the second distal groove is oriented along the arc so that when the second distal pin is removed from the second distal groove When a part is moved to the second part, the second tablet ... will not ... phase ... for, the first tablet.frame rotation. 41. The spanner of item No. 1 in the patent scope of Shen Jie, where the second distal end; a search is oriented across the arc, and the first part intersects the arc, and the second part is Positioned radially inward of the arc, so that when talking-the second escape end lock moves $ Jm% — from the first part of the second distal groove. The remote part of the electric organ; the far end of the second part of the soil policy 42. For the wrench of the 41st patent application scope, the first and second parts of the groove are curved. 43. In the case of patent application No. 41, the first and second parts of the groove are linear. The second portion of the distal groove and the second portion of the second distal groove are located at opposite ends of the respective distal groove. A8 B8 C8 D8 The Consumer Cooperatives of the Central Office of the Ministry of Economic Affairs of the People's Republic of China printed the application for the .μ patent range. The ... item 41 item was removed.—Zhongbei's two remote grooves, Chapter H, one area * ' _ It is oriented to receive the respective distal wing and cause the first and second plates to move toward each other, and further grasp the workpiece when the handle is turned in Chu # Cancer 向 #. 46. If the wrench of the scope of application for item 45, ten of these areas are located radially outward of the arc, and are determined at the opposite ends of the respective distal grooves. 4? The wrench of item 41 of the scope of patent application, which further includes a proximal-pin on the proximal end of the first and second flat plates, which is housed in a vicinity of one of the jaws. The proximal end of the end-groove. The proximal pin is disposed in the first part of the proximal-end groove in the first position, and can be moved into the first part of the proximal groove in the second position. In two parts, the first and second plates are pivoted away from each other around the proximal pin at the second position I. 48. If the scope of the patent application is -47.m soil, the first and second parts of the proximal recess in the east are oriented along the arc. 49. The wrench according to item 26 of the patent application, further comprising a spring, which is set to bias the first plate so as to return from the second position to the first position. 50. A wrench comprising: a first and a second jaw disposed on a hand, the child's jaw being spaced apart to define an opening for a workpiece, and a person-to each of the first and second The second and second plates of the jaw, each of which includes a workpiece connection adjacent to the opening (please read the precautions on the back before filling this page) Scope of patent application A8 B8 C8 D8 Consumption cooperation of employees of the Central Bureau of Standards of the Ministry of Economic Affairs, printed surface, ―For remote pins, each of them is combined with one of the materials, and each of the materials of the same grade is sold. In one of the plates, ΒΓ is installed on each—a jaw or flat and accommodated in a corresponding recess h ′. The groove is brokenly provided on the other—the rough jaw or the other plate. And in m and the second plate and received in the proximal groove of the proximal area, the riding gear is placed for Wei Ke sister to move in:] the position 'the pins are fixed in the first position In the grooves, so that the flat plates are substantially fixed relative to each other, so the rotation of the handle in the first direction causes the flat plates to grasp the workpiece between the joint surfaces and the first side Turn the work piece upwards, and b) the first position, the locks are positioned in the concave cross, so the first plate can pivot relative to the second plate, so the rotation of the handle in the second (opposite) direction causes The rotation of the first plate allows the joint surfaces to slide on the workpiece Remains stationary thereby allowing the workpiece; and a spring, fixed to the first plate toward the opening bias. 51. The wrench of claim 50, wherein the distal groove coupled to the first jaw has a first part and a second part, and the first part is oriented so that when the wrench is in the first direction When rotating, the engagement of the corresponding pin inside can hold the far end of the first flat plate relative to the paper rule (CNS) A4 · (4! 5 a: (Please read the precautions on the back before reading) (Fill in this page) Application scope of patent 4 A8 B8 C8 D8 Printed on the second tablet by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs is essentially fixed, and the second part is oriented: When the factory uses a wrench to move in the second direction, the first -The distal end of the plate is pivoted relative to the second plate. 52. The wrench according to item 51 of the scope of patent application, wherein the proximal recess-slot, the first region coupled to the distal groove of the first jaw, and the distance coupled to the second jaw The end recess is oriented along a common curved arc. The fishing line is provided at the center of the opening, and A is connected to the second recess of the first recess. The second part of the recess-slot is set by the horizontal office. 5-3. If the wrench of the scope of patent application No. 52, "the distal pin is firmly fixed on the flat plate by wind, and the distal grooves are provided on the respected jaw." 54. As for the wrench of the scope of application for patent No. 52, wherein the remote pin is firmly fixed on the treasures, and the remote one-slot beryllium is provided on the flat plates. 55. The wrench of claim 51, wherein the distal groove coupled to the first jaw is configured so that the first and second portions substantially define a V-shape. 56. A wrench according to item 55 of the patent, wherein the distal groove is provided so that the V-shaped base is oriented toward the handle. 5L The wrench according to item 55 of the patent application scope, wherein the distal recess is provided so that the V-shaped base is oriented away from the handle. 58. If the wrench of the scope of application for patent No. 50, wherein the flat plate and the impeachment are set so that the wrench can be flipped relative to the workpiece (please read the precautions on the back before filling this page)-order six The patent application scope of the wrench reverses the operation in the first and second directions. : .Such as applying for the patent, the scope of the spanner No. 50, among which the teaching department has the same configuration. Wrenches claiming the scope of patent No. 50, wherein the flat plates have different configurations. 61. The wrench according to claim 50 of the patent, wherein the part of each plate including the joint surface has an increased thickness relative to the other parts of the rim plate support. 62 · 'type wrench, including:, first and second jaws disposed on a hand, the jaws are spaced to define an opening for a workpiece, and are respectively combined with the first and second The first and second plates of the jaw, each of which includes a workpiece engaging surface adjacent to the opening, a first distal pin located at either the distal end of the first plate or one of the first jaws In one of the end regions, the first distal pin is disposed in the first distal groove, and the first distal groove is printed on a flat plate printed by a consumer cooperative of the Central Bureau of Standards of the Ministry of Economy. The second distal pin is on one of the distal end of the second plate or one of the distal end of the second jaw. The second distal pin is disposed in a second distal groove, and the second distal groove is located in the other of the distal end of the second plain or the distal region of the second jaw. In terms of paper size, this paper is suitable for Guancai County (CNS) A4 ^ (21GX297 mm)-employee consumption of the Central Standards Bureau of the Ministry of Economic Affairs Printed by the agency, A8, B8, C8, and D8. The scope of the patent application is that the first distal groove is oriented-or so that one of its distal portions is located on the arc and its-proximal portion is located inward of the lone domain. End pins are installed on the first and second plates and are received in a proximal groove which is arranged in a proximal area of one of the jaws and is oriented along the arc 7 The pins can be moved in their respective grooves in order to allow the plates to be selectively moved in: a) the first position, where the pins are fixed in the grooves so that the agricultural plates can be held To move the workpieces in the first direction, and to rotate the workpieces in the first direction, and b) the second Position, where the pins are positioned in the grooves, so that the first plate can pivot relative to the second plate, so that the handle is turned in the opposite direction of the second direction, causing the pivot of the first plate Rotation, and allow the engaging surfaces to slide on the workpiece, thus allowing Piece remains still. 63. The wrench according to item 62 of the patent application, wherein when the first flat plate is in the first position, the first distal pin is disposed on the distal portion of the first distal groove, and when the When the first plate is in the second position, the first distal pin is disposed at the near portion of the first distal groove. 64. If you apply for a spanner of 62 in the scope of the patent application, the first and second distal grooves and the proximal grooves have the proper orientation to accommodate the service (please read the precautions on the back before filling this page) A8 Βδ C8 ____ _D8 __ VI. In the area of the pin for patent application, when m is rotated in the first direction and the flat plates are in the first and second positions, the first and second flats are moved toward each other ' And further grasp the workpiece. 65. If the wrench of the scope of application for patent No. 64, the children of the i domain are placed on the drum. On each acre .. of. Yi Duan ..... Hui Lu's ... Xiang Pu Duan, upper ~ — Yu Nonggu. 1% outwards afterwards "6.6. Rushen ... phenanthrosis ~ | & bacteria-the wrench of item 64, where the proximal end-concave. The area of the groove is along the arc Fixed. .67. The wrench according to item 62 of the patent application, wherein the second distal groove includes a second portion located radially inward of the solitary so that when the second distal pin moves from the second distal end When the first part of the groove moves to the second part, the second plate is pivoted relative to the first plate. 68. The wrench of claim 62, further comprising a spring, set to bias the first plate to return from the second position toward the first position. n. _______I I ------ I nl ί I -III * 4 (please read the notes on the back before filling out this page) Order the printed paper from the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Standard (^ 774ϋ710 ^ 797 · --- ^-