TW568816B - Double-ended wrench with ergonomic handle portions - Google Patents

Abstract

A double-ended wrench is described comprising a first wrench head connected to one end of an elongated handle and a second wrench head connected to the other end thereof. Each wrench head has an orifice formed for engagement with various fasteners, and each orifice has an imaginary central axis of wrench rotation. The first wrench head is positioned relative to the second wrench head whereas the axis of wrench rotation of the first wrench head is substantially perpendicular to the axis of wrench rotation of the second wrench head. The elongated handle is formed comprising a first handle portion connecting to the first wrench head, and a second handle portion connecting to the second wrench head, and a third handle portion located between the first and second handle portions. Each handle portion has a location at which there is a defined cross-sectional thickness when the wrench is viewed from an end view thereof. The third handle portion has a cross-sectional thickness substantially greater than a cross-sectional thickness of each of the first and second handle portions.

Description

568816

[Technical field to which the invention belongs] 2 inventions are related to hand guards' and more particularly to manual double-headed wrenches L combination wrenches, closed-end wrenches, open-end wrenches, adjustable wrenches and the like [prior art]

Manual double-headed wrenches have been around for many years, and their typical configuration includes a long flat grip and a wrench head at each end to turn various fixtures. Industry type changes include combination, double-closed, double-opened, activities and the like. A flat grip attached to each wrench head provides easy access to the holder for each wrench head. However, a major disadvantage of the flat grip design is that the long flat grip only provides a small area for users to apply force to turn and operate the wrench. This small area causes discomfort and fatigue for the user, while limiting torque and continuous use. Ability. Recently, there have been attempts to form a wrench with a twisted grip to improve a double-headed wrench. This twisted grip construction provides several advantages, including a large area at each end of the wrench for force application. However, new problems with this type of twist wrench include reduced strength, lower upper and lower torque limits, and in some cases difficult access to the holder. In addition, the twisted grip of the wrench grip is poor in touch and makes the user think it is damaged or broken. Therefore, there is a need that cannot be ignored to improve this typical double-headed wrench. The inventors have come up with an improved double-headed wrench that provides users with additional control, comfort, and torque capabilities, while reducing fatigue and damage to the tool, without sacrificing the strength of the wrench or the ease of access to the fixture. , Σ

568816 V. Description of the invention (2) [Summary of the invention] The present invention has a hand that is connected to the grip wrench head and has a hole imagined the central axis. The wrench rotates the wrench head, the second grip portion and the second least one has a horizontal handle portion. The cross-sectional thickness of the present invention is the comfort and torsion of the present invention. The present invention is the feasibility of the present invention. A double-headed wrench includes a grip, one end of a first plate, and a second wrench head connected to the other end of the grip. Each to engage a variety of holders, and each hole has a wrench to rotate. The relative positions of the first wrench head and the second wrench head make the two axes perpendicular to each other. The grip has a first grip section connected to the first grip section connected to the second wrench head, and a third grip section between the first grip sections. Each grip is viewed from its end to the thickness of the section. The cross-sectional thickness of the third grip portion is greater than each degree and the cross-sectional thickness of the second grip portion. It has the following advantages: An important advantage is that it has a double wrench head. Another important advantage is its easy access to the holder. An important advantage is that it provides additional control for the user, and reduces fatigue and possible injury to the tool. Another important advantage is its strength and durability. The advantage of m is that it is easily accepted by professional users. Another important advantage is that it is cost effective to manufacture. [Embodiment] With reference to the drawings, the purpose is to present the present invention-limiting the present invention. Figure 1 is a typical implementation of the prior art. Prior art wrenches! With grip 3 * Double Shuo. Left side of the p-wrench ”—wrench heads 5 and 11. Open-end wrenches

568816 V. Description of Invention (4)

The structure of the room is roughly unchanged. Therefore, between the wrench heads 5 and 丨 丨, from one end to the other end, in different parts, the thickness of the grip 3 is approximately fixed = variable. Similarly, between the wrench heads ^ and 丨 丨, in different parts, the cross-sectional area of the grip 3 is substantially fixed and unchanged. This typical prior art wrench is close to the fixture, but only provides a small area for the user to apply force to rotate and manipulate, thus causing user discomfort and fatigue, while limiting control,

And continuous use. Therefore, there is an undeniable need for an improved double-headed wrench. The present invention can provide users with additional control, comfort and torque I = force, but reduce fatigue and tool related injuries, and do not sacrifice the wrench = or close Ease of fixation. Applicant defines “cross section” as a cut related to the grip, the cut being substantially perpendicular to its imaginary longitudinal axis. The applicant defines "r thickness" as the minimum size that sweeps through the center of the publication. The applicant defines the "area" as the value in square inches of the surface (eg, the cross section of the grip part).

3 and 4, a double-headed wrench according to the present invention is shown in a left elevation view and a top view. The double-headed wrench 21 includes a grip 23, a first wrench head 25 connected to one end of the grip 23, and a second wrench head 27 connected to the other end of the grip 23. 2. The wrench head 25 has holes 30 and the wrench head 27 has holes 32. Each hole engages a variety of fixtures. The hole 30 has the center axis 29 of the rotation of the wrench, and the hole 32 has the center rotation of the wrench ^ imagined = axis 31. Because the first wrench head 25 is opposite to the second wrench head 27, the imaginary center axis 29 of the first wrench head 25 is perpendicular to the center image center axis 31 of the second wrench head 27 (shown most clearly in FIG. 5). The grip 23 has a first grip portion 33 connected to the first wrench head 25, a second grip portion 35 connected to the second wrench head 27, and a third grip portion 37 on the first grip portion 33 and the second grip Between the handle 35.

568816

FIG. 7 is a cross-sectional end view of the second grip portion 35 of the wrench 21 shown in FIG. 3. In this end view, it can be seen that the second grip portion 35 has a cross-section, and the cross-section is substantially perpendicular to the imaginary center axis 31 of the second wrench head 27 and is substantially parallel to the imagination of the first wrench head 25. Centric axis 29. The second grip part 35 has

Page 9 568816 V. Description of the invention (6) Knowing, section thickness D2 is in this cross section. Fig. 8 shows a map of Zi Xi # 主 〇 1 & The cross-section end surface of the third grip part Γ and the third grip part 37 ϋ Q has a cross-section thickness D3 in this cross-sectional view. The thickness D3 of the household D1 '/ three grip portion / 7 of 33 is larger than the cross-sectional thickness D2 of the first grip portion-^^ 1 and the second grip portion 35. Similarly, the cross-sectional area of the first: == is greater than the cross-sectional area of the first grip portion 33 and the cut on the grip, and the cut is approximately perpendicular to the parallel :: = ”f 约 々 ϋ Γ r- A and A soldier Imagine the longitudinal axis. It is stated that “the area ii = the minimum size of the center of the profile. The applicant defines the position:” ii = the profile of the handle) The square inch is used as a single handle. All the implementation of the wrench is enhanced. 37 The middle section or the third grip (the thickness and cross-sectional area of the second grip are larger than the cross-sectional areas of other grip parts. Y Yihuo and any of the fourth grip part 35) cross-section thickness and transverse; change ::: Both the cross-sectional thickness and cross-sectional area of the part f may extend its length ..., and the female grip part must be at least one position to cause the above-mentioned social relationship to occur. The structure shown in Figures 3 to 8 provides 21 techniques. The advantages of double-headed wrenches are not to be ignored. The advantages of the first two techniques are to increase the strength and durability of the wrench and increase the user's control. Force, and reduce user fatigue and related tools. FIG. 9 is a left side elevation b view of another double-headed wrench according to the present invention. = (Figure 10 and Figure 11 are left side elevation and top views of the second double-headed wrench of the present invention, respectively. The double-headed wrench 71 includes a grip 73 and a first wrench head 75 connected to the grip 73. One end, the second wrench head 77 is connected to the other end of the grip. The wrench head 75 has a hole 80, and the wrench head 77 has a hole 82. Each hole is for engaging various types of fixed

568816

定 器。 Fixed device. The hole 80 has the imaginary center axis 79 of the wrench rotation, and the hole 82 has the imaginary center axis 81 of the wrench rotation. Since the first wrench head 75 and the second wrench head 77 = relative positions, the imaginary center axis 79 of the first wrench head 75 is perpendicular to the imaginary center axis 81 of the second wrench head 77. The grip 73 has a first grip portion 83 connected to the first wrench head 75, a second grip portion 85 connected to the second wrench head 7, and a third grip portion 87 on the first grip portion 83 and the second grip Between the 85 parts. Both the wrench heads 75 and 77 are fixed to the wrench 71. In some preferred implementations of the invention, there may be two or two wrench heads fixed to the handle of the wrench. In other preferred embodiments of the present invention, one or two wrench heads may be pivotally connected to the handle of the wrench. When the wrench 7m is operated, the user holds the grip portion 85 and rotates the wrench head 75 around the imaginary center axis 79 of various fixtures. As can be seen in Fig. 10, the area provided by the grip portion 85 is much larger than that of the prior art shown in Fig. 1, allowing the user to apply force to rotate the wrench head 75 about the imaginary center axis 79. In addition, the user grasps the grip portion 83 and rotates the wrench head 77 around the imaginary center axis 81 of various fixtures. As can be seen in Fig. 11, the area provided by the grip portion 83 is much larger than the area of the prior art shown in Fig. J, allowing the user to force the wrench head 77 to rotate about the imaginary center axis 81. The double-headed wrench of the present invention may have two wrench heads that are the same or different. Each wrench head may be fixed or attached to the handle part of the wrench. The invention

Other embodiments may include ratcheting mechanisms in one or two wrench heads to speed up operations. When considering the present invention, "simple" and "obviously obvious" should not be confused or considered the same. Therefore, the novelty and advancement of the present invention must be measured by many of the above related purposes, including easy access to fixtures, comfort, torque, strength, durability, and ergonomic considerations. ,

568816

[Brief description of the drawings] 9 The left side elevation of the double-headed spanner of the gas front technology ρη ^ I is a top view of the prior art wrench. Left side elevation view of the double-headed wrench of the present invention. Figures 4 to 3 are top views of the wrenches. FIG. 5 is an end view of the wrench shown in FIG. 4. Fig. 6 is the rebellious Fengxi Chu shown in Fig. 3 Fig. 7 is a cross-sectional end view of the pull portion shown in Fig. 3 Fig. 8 is a cross-sectional end view of the portion shown in Fig. 3 Left side elevation view of a 1Λ HL force double-headed wrench c " ^ Left side elevation view of another double-headed wrench of the invention The top views of the wrenches shown in FIGS. 11 to 10. [Reference number in the figure] 1 Wrench 7 Imagine the center axis 1 3 Imagine the center axis 23 Grip 2 9 Imagine the center axis 32 holes 3 7 The third grip part 7 5 The first wrench head 80 holes 8 3 The first grip Cross section D1 thickness 3 grip 9 grip section 1 5 grip section 2 5 first wrench head 30 hole 3 3 first grip section 71 double head wrench 7 7 second wrench head 81 imagine center axis 8 5 Second grip section D2 Cross section thickness 5 Wrench head 11 Wrench head 21 Double head wrench 27 Second wrench head 31 Imagine center axis 3 5 Second grip part 73 Grip 79 Imagine center axis 82 hole 8 7th Three-grip section D3 cross section thickness

Claims (1)

568816 VI. Scope of patent application 1. A double-headed wrench, including a grip, and one of the grips should be dry. The wrench head is fixed to the wrench head, and the second wrench head is fixed to the handle. At the other end, each image center axis is combined with a variety of fixtures. Each hole has a wrench to rotate the axis. The relative position of the first wrench head and the second wrench head makes the axis of rotation. The handle of the wrench that is perpendicular to the second wrench head is connected: the grip portion of the bag fi is connected to the first-wrench head, the second and second grip buckle, the wrench head, and the third grip part. Between the first grip part and a household Liu Γ ° 卩, each grip part has at least one thickness 戸, d when viewed from its end, the cross-sectional thickness of the third grip part and The cross-section thickness of the second grip part is the double-headed wrench described in the first grip No. 2 span range item 1, wherein the Zigzag head is different from the second wrench head. The double-headed wrench according to item 1 in the third spanner range, wherein the head is the same as the second spanner head. The two-headed spanner with four handles and a double-headed wrench as described in item 1 above, wherein one is in the head and one includes a ratcheting mechanism. Grip 5 :: Double: Department;: Head; The handle including the handle and the first wrench head are connected to the :: line; together; the holder, each hole has a wrench rotation in the imagination-= 头 ϊί: ;: The relative position of the head and the second wrench head makes the second line, and the grip includes a first grip part connected to the "dagger: the m part is connected to the second wrench head, and the second protection head of the" μ second wrench head, Between the first grip and the second grip, each, the grip, the first grip and the "° foot" end have at least one place when viewed at page 13 568816 6. Scope of patent application ___ = Cross-sectional area 'The cross-sectional area of the third grip portion and the cross-sectional area of the second grip portion. The first grip portion of the child, which one of which 6. Among them, such as the scope of the patent application No. 5 The brother's one wrench head is different from the second wrench head. Master money hand 7. The double stomach one wrench head described in item 5 of the scope of patent application is the same as the second wrench head. 8. If the scope of patent application At least one of the double-headed wrenches described in item 5 includes a ratcheting mechanism. 9. A double-headed wrench, which is held in a pot and cup, and M-jealous π two grips, the first wrench head is connected to the ΪΪ, ΪΪ is connected to the other-end of the handle, each wrench is:-holes to: fit various types of fixtures' each hole has a wrench rotation axis, ㈣- The opposite side of the wrench head to the second wrench head; = The rotation axis of the wrench at the hand is perpendicular to the wrench rotation of the second wrench head = line, the grip includes a first-grip part connected to the first wrench, the first Two or two parts are connected to the second wrench head, and the second tooth 睚 杷 part is between the first grip part and the first grip part. The cross section of the first grip part is substantially vertical. The wrench rotation axis of the first wrench head is substantially parallel to the wrench rotation axis of the second wrench head, and the cross section of the second grip portion is substantially perpendicular to the wrench rotation axis of the second wrench head and It is substantially parallel to the f-hand rotation axis of the first wrench head, and each grip portion has a thickness of at least one cross section when viewed from its end, and the thickness of the third grip portion is greater than that of the first grip. The thickness of the cross section of the handle and the thickness of the cross section of the second grip. 1 0 · Double head as described in item 9 of the scope of patent application Wrench, the wrench head which is different from the first to the second wrench head. Page 14 568816 VI. The scope of the patent application where the where the where 11. The first wrench head described in item 9 of the scope of the patent application is the same as the second wrench. I Wrench-You 1f ^ The double-headed wrench described in item 9 of the patent scope. At least one of the wrench heads includes a ratcheting mechanism. 13. The double-headed wrench according to item 9 of the scope of patent application. At least one of the wrench heads is pivotally connected to the grip portion. 14 ·-A double-headed wrench, including a grip, the _ wrench head is connected to the-end, the second wrench head is connected to the other end of the handle, each wrench φ,, a hole to engage various types of fixing Each hole has a imaginary wrench rotation of the wrench. The relative position of the first wrench head and the second wrench head makes the rotation axis of the spanner's wrench head perpendicular to the rotation axis of the second wrench head. The grip includes a first grip portion connected to the first wrench head and a second grip. It is connected to the second wrench head and the third grip part is between the first grip part and the first grip part. The cross section of the first grip part is substantially perpendicular to the first wrench head. The wrench rotation axis is substantially parallel to the wrench rotation axis of the second wrench head, and the cross section of the second grip portion is substantially perpendicular to the wrench rotation axis of the second wrench head and is substantially parallel to the first wrench axis. A wrench rotation axis of a wrench head, each grip portion has a cross-sectional area at least at one place as viewed from an end thereof, and the cross-sectional area of the third grip portion is greater than the cross-sectional area of the first grip portion and The cross-sectional area of the second grip portion. 15 · The double-headed wrench according to item 14 of the scope of patent application, wherein the first wrench head is different from the second wrench head. 16 · The double-headed wrench according to item 14 of the scope of patent application, wherein the first wrench head is the same as the second wrench head. Page 15 568816 VI. Scope of patent application 217. The double-headed wrench described in item 14 of the scope of patent application, wherein at least one of the two wrench heads includes a ratcheting mechanism. 8 21 1 8 The double-headed wrench according to item 14 of the scope of patent application, wherein at least one of the two wrench heads is pivotally connected to the grip portion. 829. The double-headed wrench according to item 7 of the patent application scope, wherein the first wrench head is different from the second wrench head. /, ^ 2〇. The double-headed wrench according to item 17 of the scope of patent application, wherein the first wrench head is the same as the second wrench head. 1 A double-headed wrench, comprising a grip, a first wrench head connected to the-end, and a second wrench head connected to the other end of the handle, each wrench: a head ^ hole to engage a variety of fixtures, Each hole has an imaginary two axis of wrench rotation. The relative position of the first wrench head and the second wrench head makes the wrench rotation axis of the wrench head perpendicular to the wrench rotation glaze line of the second wrench head. The handle includes The first grip portion is connected to the first wrench head, and the first grip portion is connected to the second wrench head. The cross section of the first grip portion is roughly: perpendicular to the rotation axis of the wrench of the first wrench head and substantially parallel. In the second, the rotation axis of the wrench at hand, the cross section of the second grip portion is large = up ^ Straight to the rotation axis of the wrench at the second wrench head and is substantially parallel to the rotation axis of the wrench at the first ^ The grip includes a side taper toward the second wrench head and a top taper toward the second wrench head. 22. The double-headed wrench according to item 21 of the patent application scope, wherein the first wrench head is different from the second wrench head. Eight ▲ 23. The double-headed wrench according to item 21 of the scope of patent application, wherein the first wrench head is the same as the second wrench head. ^ 568816 VI. Scope of patent application ----: — = 24. The double-headed wrench described in item 21 of the scope of patent application, wherein at least one of the two wrench heads includes a ratcheting mechanism. 8. 25. The double-headed wrench according to item 21 of the scope of patent application, in which at least one of the two wrench heads is pivotally connected to the grip portion. 8. 26. The double-headed wrench described in item 25 of the scope of patent application, wherein the first wrench head in the bean is different from the second wrench head. 8. 27. The double-headed wrench according to item 25 of the scope of patent application, the first wrench head is the same as the second wrench head. / 2. 28. The double-headed wrench according to item 25 of the scope of patent application, wherein at least one of the two wrench heads includes a ratcheting mechanism. '^ _ 29 · A double-headed wrench comprising a handle, a first wrench head connected to one end of the handle, and a second wrench head connected to the other end of the handle, each of which has two holes for engaging For various fixtures, the center axis is imagined with a wrench turning in each hole. The relative position of the first wrench head and the second wrench head makes the wrench rotation axis of the first wrench head perpendicular to the wrench of the second wrench head. The rotation axis is substantially undistorted, and includes a first grip portion connected to the first wrench head and a second grip portion connected to the second wrench head. A wrench head is tapered, and the top face is tapered to the second wrench head. 0 30. According to the double-headed wrench described in item 29 of the patent application scope, the first wrench head is different from the second wrench head. Eight • 31. The double-headed wrench described in item 29 of the patent application scope, wherein the first wrench head is the same as the second wrench head. "2 2 · The double-headed wrench described in item 2g of the scope of patent application, wherein 568816 VI. Scope of patent application At least one of the two hands includes a ratcheting mechanism. -33. The double-headed wrench according to item 29 of the scope of patent application, wherein at least one of the two wrench heads is pivotally connected to the grip portion. A 34. A double-headed wrench comprising a handle, a first wrench head connected to one end of the handle, and a second wrench head connected to the other end of the handle, each wrench head has a hole to engage various types Fixer, each hole has the imagination of the wrench turning ~ the axis 'The relative position of the first wrench head and the second wrench head makes the wrench rotation axis of the first wrench head perpendicular to the wrench rotation axis of the second wrench head' The grip is substantially undistorted, and includes a first grip portion connected to the first handle, a second grip portion connected to the second wrench head, and a cross-section of the first grip portion ψ is perpendicular to the The cross-section of the second grip part, the non-twisted grip includes a tapered side to the first wrench head and a tapered top to the second wrench head 3 5 · As described in item 34 of the scope of patent application In the double-headed wrench, the tapered side surface is continuous and the same as the two grip parts, and the tapered top surface is continuous and the same as the two grip parts. 36. The double-headed wrench according to item 34 of the scope of patent application, wherein the first wrench head is different from the second wrench head. Eight 37. The double-headed wrench according to item 34 of the scope of patent application, wherein the first wrench head is the same as the second wrench head. 8. 38. The double-headed wrench according to item 34 of the scope of patent application, wherein at least one of the two wrench heads includes a ratcheting mechanism. ... 3 9. The double-headed wrench according to item 34 of the scope of patent application, wherein at least one of the two wrench heads is pivotally connected to the grip portion. Page 18 568816 VI. Patent application scope · 40 · The double-headed wrench according to item 35 of the patent application scope, wherein the first wrench head is different from the second wrench head. 41. The double-headed wrench according to item 35 of the scope of patent application, wherein the first wrench head is the same as the second wrench head. 4 2 The double-headed wrench according to item 35 of the scope of patent application, wherein at least one of the wrench heads includes a ratcheting mechanism. 43. The double-headed wrench according to item 35 of the scope of patent application, wherein at least one of the wrench heads is pivotally connected to the grip portion. 44 · A double-headed wrench comprising a grip, a first wrench head connected to one end of the handle, and a second wrench head connected to the other end of the handle, each wrench has a hole on the hand to engage various types of fixing Device, each hole has an imaginary center axis of the wrench rotation, and the relative position of the first wrench head and the second wrench head makes the wrench rotation axis of the first wrench head perpendicular to the wrench rotation axis of the second wrench head, The grip is substantially undistorted and includes a first grip portion connected to the first wrench head and a second grip portion connected to the second wrench head. A cross-section of the first grip portion is substantially perpendicular to the The wrench rotation axis of the first wrench head is substantially parallel to the wrench rotation axis of the second wrench head, and the profile of the second grip portion is substantially perpendicular to the wrench rotation axis of the second wrench head and is substantially parallel. On the rotation axis of the wrench of the first wrench head, the non-twisted grip has a side that tapers toward the first wrench head and a top that tapers toward the second wrench head. ί_ 4 5 · The double-headed wrench according to item 4 of the patent application scope, wherein the tapered side surface is continuous and the same as the two grip parts, and the tapered top surface is continuous with the two grip parts And the same. 46. The double-headed wrench according to item 44 of the scope of patent application, wherein Page 19 568816 The first wrench head is different from the second wrench head. The double-headed wrench described in item 44 of the current 47 · Λ scope of material benefit The first wrench head is the same as the second wrench head. 48. Double-headed wrench as described in item 44 of the scope of patent application. At least one of the wrench heads includes a ratcheting mechanism. = One 49. The double-headed wrench according to item 44 of the scope of patent application. At least one of the two wrench heads is pivotally connected to the grip portion. $ 〇 The double-headed wrench according to item 45 of the patent application scope. The first wrench is different from the second wrench. A 51 · The double-headed wrench described in item 45 of the scope of the patent application The wrench is the same as the second wrench head. . -52. The double-headed wrench according to item 45 of the scope of patent application, wherein at least one of the wrenches includes a ratcheting mechanism. 53. The double-headed wrench according to item 45 of the scope of patent application, wherein at least one of the two wrenches is pivotally connected to the grip portion. Eight of which of which of which Page 20