Telescopic folding F-shaped wrench

Abstract

The utility model provides a telescopic folding type F-shaped wrench which comprises an F-shaped wrench body, an extension rod and a sleeve, the extension rod and the sleeve are sequentially connected to the second end of a longitudinal rod of the F-shaped wrench, the extension rod can rotate towards the back face of a transverse rod through a rotary limiting device, folding of the extension rod is achieved, and the telescopic folding type F-shaped wrench is convenient to use. The F-shaped wrench is convenient to carry, can be suitable for a narrow operation space, and can rotate towards the back faces of the transverse rods, so that interference generated when the extension rod and the two transverse rods are folded can be avoided; according to the F-shaped wrench, the sleeve is connected to the end of the extension rod in a sleeving mode, the sleeve can axially slide along the extension rod and is limited through the length limiting device, and therefore the length of the F-shaped wrench is adjusted, and the force arm requirements under different use scenes are met. The F-shaped wrench can be bent and folded, and the length of the F-shaped wrench can be adjusted, so that the F-shaped wrench can be suitable for different use spaces, the most labor-saving use effect is achieved, and the F-shaped wrench is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware tools, in particular to a telescopic and foldable F-shaped wrench. Background Art

[0002] The F-shaped wrench is a very important hardware tool, which has been widely used in the petroleum, chemical, metallurgy and other industries. The F-shaped wrench in the prior art is an "F"-shaped structural member composed of a longitudinal tube and two transverse tubes fixedly connected. The two transverse tubes are located in the front half of the longitudinal tube, and the rear half of the longitudinal tube is a handle. When in use, hold the handle, insert the two transverse tubes into the handwheel of the manual valve, and push the handle to open and close the valve more easily. The "F" shape design of the F-shaped wrench provides users with a good leverage effect, which enables users to apply force more easily and saves a lot of labor intensity in the process of opening and closing the valve.

[0003] However, due to the different sizes of valves of different models, the handle arm lengths of the F-shaped wrenches required to open and close valves of different models are different. In the prior art, the length of the longitudinal tube of the F-shaped wrench is fixed, and F-shaped wrenches of different sizes need to be frequently replaced to cope with different arm requirements, which brings many inconveniences to production. Production companies also need to prepare a variety of F-shaped wrenches of different specifications, which increases production costs. In addition, in places where the operating space is relatively narrow, the F-shaped wrench with a longer handle cannot be used. Therefore, if the handle of the F-shaped wrench is too long, it is not suitable for narrow operating spaces, and it is inconvenient to carry. If the handle is too short, it is inconvenient to operate and the operation is laborious, and the operation is difficult. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a retractable and foldable F-shaped wrench, in which an extension rod and a sleeve are connected in sequence at the end of a longitudinal rod, and the extension rod can be rotated toward the back of the transverse rod by a rotating limit device to achieve the folding of the extension rod, which not only makes the F-shaped wrench convenient to carry, but also can be used in a narrow operating space; by sleeve-connecting the sleeve at the end of the extension rod, the length of the F-shaped wrench can be adjusted to meet the arm requirements in different usage scenarios. The F-shaped wrench of the utility model can be bent and folded, and can be retracted in length, can be used in different usage scenarios, and is easy to carry.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A retractable and foldable F-shaped wrench, comprising:

[0007] The F-shaped wrench body is composed of a longitudinal rod and two transverse rods installed at intervals on the same side of the first end of the longitudinal rod;

[0008] An extension rod is mounted on the second end of the longitudinal rod through a rotation limiter, wherein the rotation limiter enables the extension rod to rotate toward the back of the transverse rod to achieve folding of the extension rod;

[0009] The sleeve is sleeved on the end of the extension rod away from the longitudinal rod, and can slide axially along the extension rod and be limited by the length limiting device to adjust the force arm length of the F-shaped wrench.

[0010] Furthermore, the extension rod and the longitudinal rod have the same width and thickness.

[0011] Furthermore, the rotation limiting device is a first arc-shaped connecting part and a limiting protrusion arranged at the second end of the longitudinal rod, and a second arc-shaped connecting part and a limiting groove arranged at the end of the extension rod and cooperating with the first arc-shaped connecting part and the limiting protrusion. The first arc-shaped connecting part and the second arc-shaped connecting part are both provided with through holes and are connected by fasteners so that the limiting protrusion and the limiting groove are engaged.

[0012] Furthermore, the limiting protrusion and the limiting groove are respectively located on the longitudinal rod and the extension rod on one side close to the transverse rod, so that the extension rod can only rotate toward the back side of the transverse rod.

[0013] Furthermore, the sum of the thicknesses of the first arc-shaped connecting portion and the second arc-shaped connecting portion is equal to the thicknesses of the extension rod and the longitudinal rod.

[0014] Furthermore, the fastener is a fastening bolt and a fastening nut matched with the fastening bolt, and the diameter of the fastening bolt is smaller than the diameter of the through hole.

[0015] Furthermore, the sleeve is provided with a plurality of slots at intervals along the axial direction, and the length limiting device is an elastic member and a pin installed on the extension rod, one end of the pin is fixedly connected to the elastic member, and the other end can be ejected into the slot to limit the sleeve.

[0016] Furthermore, the elastic member is a spring.

[0017] Furthermore, the outer wall of the sleeve is provided with uneven anti-skid patterns.

[0018] Furthermore, the transverse rod, longitudinal rod, extension rod and sleeve are all cast from high carbon steel.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model connects the extension rod and the sleeve in sequence at the second end of the longitudinal rod of the F-shaped wrench, and the extension rod can be rotated toward the back of the transverse rod by a rotation limit device to achieve folding of the extension rod, which not only makes the F-shaped wrench convenient to carry, but also can be used in narrow operating spaces, and rotating toward the back of the transverse rod can avoid interference between the extension rod and the two transverse rods when folding; by sleeve-connecting the sleeve at the end of the extension rod, the sleeve can slide axially along the extension rod and be limited by the length limit device, so as to adjust the length of the F-shaped wrench to meet the arm requirements in different usage scenarios. The F-shaped wrench of the utility model can be bent and folded, and can be extended in length, so it can be used in different usage spaces, achieve the most labor-saving use effect, and is easy to carry.

[0021] 2. The utility model is provided with uneven anti-skid patterns on the outer wall of the sleeve, which can increase friction, facilitate user gripping, and prevent slipping due to sweat and oil stains on the user's hands during operation, thereby improving the use effect and safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front structural schematic diagram of a retractable and foldable F-shaped wrench of the utility model;

[0023] Figure 2 It is a left side cross-sectional view of a retractable and foldable F-shaped wrench of the utility model;

[0024] Figure 3 It is a schematic diagram of the second end of the longitudinal rod of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the end structure of the extension rod connected to the longitudinal rod.

[0026] Reference numerals:

[0027] 10-longitudinal rod, 11-first end, 12-second end, 20-transverse rod, 30-extension rod, 40-sleeve, 41-anti-slip pattern, 50-rotation limiting device, 51-first arc-shaped connecting part, 52-limiting protrusion, 53-second arc-shaped connecting part, 54-limiting groove, 55-through hole, 56-fastening bolt, 57-fastening nut, 60-length limiting device, 61-slot, 62-spring, 63-pin. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 4 As shown, the utility model provides a retractable and foldable F-shaped wrench, comprising:

[0032] The F-shaped wrench body is composed of a longitudinal rod 10 and two transverse rods 20 installed at intervals on the same side of the first end 11 of the longitudinal rod 10;

[0033] The extension rod 30 is mounted on the second end 12 of the longitudinal rod 10 through a rotation limiter 50, and the rotation limiter 50 enables the extension rod 30 to rotate toward the back of the transverse rod 20 to achieve folding of the extension rod 30;

[0034] The sleeve 40 is sleeved on the end of the extension rod 30 away from the longitudinal rod 10, and can slide axially along the extension rod 30 and be limited by the length limiting device 60 to adjust the arm length of the F-shaped wrench.

[0035] The utility model connects the extension rod 30 and the sleeve 40 in sequence at the second end 12 of the longitudinal rod 10 of the F-shaped wrench, and the extension rod 30 can be rotated toward the back of the transverse rod 20 by rotating the limiting device 50 to realize the folding of the extension rod 30, which not only makes the F-shaped wrench convenient to carry, but also can be applied to a narrow operating space, and the rotation toward the back of the transverse rod 20 can avoid the interference between the extension rod 30 and the two transverse rods 20 when folding; by sleeve-connecting the sleeve 40 at the end of the extension rod 30, the sleeve 40 can slide axially along the extension rod 30 and be limited by the length limiting device 60, so as to adjust the length of the F-shaped wrench to meet the arm requirements in different use scenarios. Specifically, the sleeve 40 can be extended to make the arm of the F-shaped wrench longer. According to the principle of lever, the longer the arm within a reasonable range, the more labor-saving it is when using it; when the use space is limited, the sleeve 40 can be shortened to save space; when the use space is further limited, the folding extension rod 30 can be rotated to a suitable angle to further save the operating space. After use, the sleeve 40 is retracted to the shortest position, and then the extension rod 30 is folded to the back of the transverse rod 20 to reduce the volume of the F-shaped wrench and make it easy to carry. The F-shaped wrench of the utility model can be bent and folded, and can be extended in length, so it can be applied to different use spaces, achieves the most labor-saving use effect, and is easy to carry.

[0036] In some embodiments, Figure 1 As shown, the extension rod 30 has the same width and thickness as the longitudinal rod 10 , and the inner cavity width of the sleeve 40 is larger (3-5 mm larger) than the width of the extension rod 30 , so that the sleeve 40 can be sleeved on the extension rod 30 and freely slide axially along the extension rod 30 .

[0037] In some embodiments, Figures 1 to 4 As shown, the rotation limiting device 50 is a first arc-shaped connecting portion 51 and a limiting protrusion 52 arranged at the second end 12 of the longitudinal rod 10, and a second arc-shaped connecting portion 53 and a limiting groove 54 arranged at the end of the extension rod 30 and matched with the first arc-shaped connecting portion 51 and the limiting protrusion 52. The first arc-shaped connecting portion 51 and the second arc-shaped connecting portion 53 are both provided with a through hole 55 and connected by a fastener so that the limiting protrusion 52 and the limiting groove 54 are engaged. The sum of the thickness of the first arc-shaped connecting portion 51 and the second arc-shaped connecting portion 53 is equal to the thickness of the extension rod 30 and the longitudinal rod 10. The limiting protrusion 52 and the limiting groove 54 are respectively located on the longitudinal rod 10 and the extension rod 30 near the transverse rod 20, so that the extension rod 30 can only rotate toward the back of the transverse rod 20, avoiding interference between the extension rod 30 and the two transverse rods 20 when folding.

[0038] As a preferred embodiment, Figure 2As shown, the fastener is a fastening bolt 56 and a fastening nut 57 matched with the fastening bolt 56, and the diameter of the fastening bolt 56 is smaller than the diameter of the through hole 55. In normal use, the fastening nut 57 is tightened to fix the extension rod 30 with the second end 12 of the longitudinal rod 10, so as to prevent the extension rod 30 and the longitudinal rod 10 from rotating relative to each other during operation, which may cause difficulty in operation or injury to people; when it is necessary to fold or reduce the use space, the fastening nut 57 is loosened appropriately to make the extension rod 30 and the longitudinal rod 10 rotate relative to each other, and the extension rod 30 is rotated to a suitable position, and then the fastening nut 57 is tightened to realize the storage of the F-shaped wrench or the next use.

[0039] In some embodiments, Figure 1 and Figure 2 As shown, the sleeve 40 is provided with a plurality of slots 61 at intervals along the axial direction, and the length limiting device 60 is an elastic member and a pin 63 installed on the extension rod 30, one end of the pin 63 is fixedly connected to the elastic member, and the other end can be ejected into the slot 61 to limit the sleeve 40. When the arm length of the F-shaped wrench needs to be adjusted, the pin 63 is pressed to compress the elastic member, and when the top of the pin 63 is retracted into the inner cavity of the sleeve 40, the sleeve 40 is moved to extend or retract it, and when it is adjusted to a suitable length, the pin 63 is adjusted to the slot 61 at a suitable position, and the pin 63 will be ejected into the corresponding slot 61 under the elastic force of the elastic member, thereby fixing the sleeve 40 and completing the arm length adjustment of the F-shaped wrench.

[0040] As a preferred embodiment, Figure 2 As shown, the elastic member is a spring 62 .

[0041] In some embodiments, Figure 1 As shown, the outer wall of the sleeve 40 is provided with uneven anti-skid patterns 41, which can increase friction, facilitate user gripping, and prevent slipping due to sweat and oil stains on the user's hands during operation, thereby improving the use effect and safety performance.

[0042] As a preferred embodiment, the transverse rod 20, the longitudinal rod 10, the extension rod 30 and the sleeve 40 are all cast from high carbon steel. High carbon steel is easy to manufacture, highly practical and economical.

[0043] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A retractable and foldable F-shaped wrench, characterized in that: include: The F-shaped wrench body is composed of a longitudinal rod and two transverse rods installed at intervals on the same side of the first end of the longitudinal rod; An extension rod is mounted on the second end of the longitudinal rod through a rotation limiter, wherein the rotation limiter enables the extension rod to rotate toward the back of the transverse rod to achieve folding of the extension rod; The sleeve is sleeved on the end of the extension rod away from the longitudinal rod, and can slide axially along the extension rod and be limited by the length limiting device to adjust the force arm length of the F-shaped wrench.

2. The retractable and foldable F-shaped wrench according to claim 1, characterized in that: The extension rod has the same width and thickness as the longitudinal rod.

3. The retractable and foldable F-shaped wrench according to claim 2, characterized in that: The rotation limiting device is composed of a first arc-shaped connecting part and a limiting protrusion arranged at the second end of the longitudinal rod, and a second arc-shaped connecting part and a limiting groove arranged at the end of the extension rod and cooperating with the first arc-shaped connecting part and the limiting protrusion. The first arc-shaped connecting part and the second arc-shaped connecting part are both provided with through holes and are connected by fasteners so that the limiting protrusion and the limiting groove are engaged.

4. The retractable and foldable F-shaped wrench according to claim 3, characterized in that: The limiting protrusion and the limiting groove are respectively located on the longitudinal rod and the extension rod at one side close to the transverse rod, so that the extension rod can only rotate toward the back side of the transverse rod.

5. The retractable and foldable F-shaped wrench according to claim 4, characterized in that: The sum of the thicknesses of the first arc-shaped connecting portion and the second arc-shaped connecting portion is equal to the thicknesses of the extension rod and the longitudinal rod.

6. The retractable and foldable F-shaped wrench according to claim 5, characterized in that: The fastener is a fastening bolt and a fastening nut matched with the fastening bolt, and the diameter of the fastening bolt is smaller than the diameter of the through hole.

7. The retractable and foldable F-shaped wrench according to claim 1, characterized in that: The sleeve is provided with a plurality of slots at intervals along the axial direction. The length limiting device is an elastic member and a pin installed on the extension rod. One end of the pin is fixedly connected to the elastic member, and the other end can be ejected into the slot to limit the sleeve.

8. The retractable and foldable F-shaped wrench according to claim 7, characterized in that: The elastic member is a spring.

9. The retractable and foldable F-shaped wrench according to claim 1, characterized in that: The outer wall of the sleeve is provided with uneven anti-skid patterns.

10. The retractable and foldable F-shaped wrench according to claim 9, characterized in that: The transverse rod, longitudinal rod, extension rod and sleeve are all cast from high carbon steel.

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