A locking wrench

Abstract

The present invention relates to the technical field of locking wrenches, and provides a locking wrench, comprising at least: a first sleeve, one end of which is provided with a sleeve suitable for engaging a member to be twisted; a first avoidance hole is provided on the wall of the first sleeve, the first avoidance hole being suitable for allowing a blocking member in the narrow cavity to extend from the first avoidance hole when the first sleeve extends into the narrow cavity; wherein, along a projection plane parallel to the axial direction of the first sleeve, the width of the first avoidance hole is greater than the width of the blocking member, so that the first sleeve can rotate along its own axis by a preset angle before abutting against the blocking member. The locking wrench allows the first sleeve to smoothly extend into the narrow cavity to twist the member to be twisted; and the width of the first avoidance hole is greater than the width of the blocking member, ensuring that before the hole wall of the first avoidance hole abuts against the blocking member, the first sleeve can rotate along its own axis by a preset angle to twist the member to be twisted.

Description

Technical Field

[0001] The present invention relates to the technical field of locking wrenches, in particular to a locking wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to twist bolts, screws, nuts, and other torsion parts.

[0003] When a part to be twisted is located in a deep, narrow cavity, a socket wrench is usually required to penetrate the narrow cavity to twist the part. However, for some equipment with complex structures, if there is a blocking member in the narrow cavity that is not parallel to the axial direction of the socket wrench, the existing socket wrench will be restricted from reaching into the narrow cavity to twist the part to be twisted. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that for some equipment with complex structures, when there is a component in a narrow cavity that is not parallel to the axial direction of the socket wrench, the existing socket wrench will be restricted and unable to extend into the narrow cavity to twist the to-be-torqued component, thereby providing a locking wrench.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A locking wrench comprises at least: a first sleeve, one end of which is provided with a socket suitable for engaging a part to be twisted; a first avoidance hole is provided on the wall of the first sleeve, and the first avoidance hole is suitable for allowing a blocking part in the narrow cavity to extend from the first avoidance hole when the first sleeve extends into a narrow cavity; wherein, along a projection surface parallel to the axial direction of the first sleeve, the width of the first avoidance hole is greater than the width of the blocking part, so that the first sleeve can rotate along its own axis by a preset angle before it abuts against the blocking part.

[0007] Furthermore, along the circumferential direction of the first sleeve, the first sleeve has a split structure, including at least two first sub-parts spliced ​​together; each first sub-part is provided with a first groove, and after the first sub-parts are spliced ​​together, multiple first grooves together form the first avoidance hole.

[0008] Furthermore, the first sleeve includes three first sub-parts, wherein two of the first sub-parts are fan-shaped plates with a central angle of 90°, and another first sub-part is a fan-shaped plate with a central angle of 180°.

[0009] Furthermore, the locking wrench also includes a torque wrench and a torque loading disk; the torque loading disk is arranged at the end of the first sleeve away from the sleeve, and the torque wrench is arranged on the side of the torque loading disk facing away from the first sleeve, suitable for driving the first sleeve to rotate along its own axis through the torque wrench.

[0010] Furthermore, the locking wrench also includes a second sleeve, which is sleeved on the outside of the first sleeve, and the first sleeve can rotate in the barrel of the second sleeve; one end of the second sleeve is suitable for being connected to the part to be twisted, and is suitable for providing reverse torque when the first sleeve twists the part to be twisted; a second avoidance hole suitable for the blocking part to extend is provided on the barrel wall of the second sleeve.

[0011] Furthermore, along the circumferential direction of the second sleeve, the second sleeve has a split structure, including at least two second sub-parts spliced ​​together; each second sub-part is provided with a second groove, and after the second sub-parts are spliced ​​together, multiple second grooves together form the second avoidance hole.

[0012] Furthermore, the second sleeve includes three second sub-parts, wherein two of the second sub-parts are sector-shaped plates with a central angle of 90°, and another second sub-part is a sector-shaped plate with a central angle of 180°.

[0013] Furthermore, the locking wrench further includes a load-bearing rod provided on the outer wall of the second sleeve, and the load-bearing rod extends in a radial direction of the second sleeve in a direction away from the second sleeve.

[0014] Furthermore, one end of the first sleeve adapted to be connected to the torque loading disc extends outward from the barrel of the second sleeve.

[0015] Furthermore, the inner contour of the sleeve is a regular hexagon.

[0016] The technical solution of the present invention has the following advantages:

[0017] The locking wrench provided by the present invention has a first avoidance hole provided on the wall of the first sleeve. For some equipment with complex structures, when there is a blocking member that is not parallel to the axial direction of the first sleeve in the narrow cavity, the blocking member can extend from the first avoidance hole, so that the first sleeve can smoothly extend into the narrow cavity to twist the twisting member; moreover, the width of the first avoidance hole is greater than the width of the blocking member, ensuring that before the hole wall of the first avoidance hole abuts against the blocking member, the first sleeve can rotate along its own axis by a preset angle to twist the twisting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of a scenario in which a locking wrench according to an embodiment of the present invention is used;

[0020] Figure 2 Schematic diagram of a locking wrench in use according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the first sleeve in use state;

[0022] Figure 4 for Figure 2 A schematic diagram of the first sleeve in FIG;

[0023] Figure 5 for Figure 2 A schematic diagram of the second sleeve in the use state;

[0024] Figure 6 for Figure 2 Schematic diagram of the second sleeve in FIG.

[0025] 1. Narrow cavity; 2. Bolt; 3. Blocking piece;

[0026] 4. Nut; 5. First sleeve; 6. Second sleeve;

[0027] 7. Load-bearing rod; 8. First avoidance hole; 9. Torque loading plate;

[0028] 10. Torque wrench; 11. Second avoidance hole; 12. Socket;

[0029] 13. First subsection; 14. Second subsection; 15. Bayonet. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Figure 1 A schematic diagram of a scenario in which a locking wrench according to an embodiment of the present invention is used; Figure 2 Schematic diagram of a locking wrench in use according to an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the first sleeve in use state; Figure 1 、 Figure 2 as well as Figure 3 As shown, this embodiment provides a locking wrench, comprising at least: a first sleeve 5, one end of which is provided with a socket 12 suitable for engaging a member to be twisted; a first avoidance hole 8 is provided on the wall of the first sleeve 5. For example, the first avoidance hole 8 can be an elongated hole, the length direction of the first avoidance hole 8 being consistent with the length direction of the first sleeve 5, and the first avoidance hole 8 is suitable for allowing the blocking member 3 in the narrow cavity 1 to extend out of the first avoidance hole 8 when the first sleeve 5 is inserted into the narrow cavity 1; wherein, along a projection plane parallel to the axial direction of the first sleeve 5, the width of the first avoidance hole 8 is greater than the width of the blocking member 3, so that the first sleeve 5 can rotate along its own axis by a preset angle before contacting the blocking member 3. The preset angle corresponds to the distance between the hole wall of the first avoidance hole 8 and the blocking member 3. The greater the distance between the two, the greater the angle of rotation of the first sleeve 5 before the first avoidance hole 8 contacts the blocking member 3, and the higher the twisting efficiency. For example, the preset angle can range from 90° to 270°.

[0035] It should be noted that the blocking member 3 in this embodiment refers to a blocking member 3 that does not completely form a closed loop with the wall of the narrow cavity 1. In this scenario, there is still a gap between the blocking member 3 and the narrow cavity 1, so that the blocking member 3 can pass through the first avoidance hole 8.

[0036] The locking wrench provided in this embodiment has a first avoidance hole 8 provided on the wall of the first sleeve 5. For some equipment with complex structures, when there is a blocking member 3 in the narrow cavity 1 that is not parallel to the axial direction of the first sleeve 5, the blocking member 3 can be extended from the first avoidance hole 8, so that the first sleeve 5 can be smoothly extended into the narrow cavity 1 to twist the twisted member; moreover, the width of the first avoidance hole 8 is greater than the width of the blocking member 3, ensuring that before the hole wall of the first avoidance hole 8 abuts against the blocking member 3, the first sleeve 5 can rotate along its own axis by a preset angle to twist the twisted member.

[0037] Figure 4 for Figure 2 Schematic diagram of the first sleeve in; Figure 4 As shown, the difference from the scenario corresponding to the above embodiment is that when the blocking member 3 and the cavity wall of the narrow cavity 1 completely form a closed loop, in this scenario, there is no gap between the blocking member 3 and the narrow cavity 1, and the blocking member 3 cannot directly penetrate into the first avoidance hole 8. At this time, along the circumferential direction of the first sleeve 5, the first sleeve 5 is a split structure, including at least two first sub-sections 13 spliced ​​together; each first sub-section 13 is provided with a first groove, and after the first sub-sections 13 are spliced ​​together, the multiple first grooves together form the first avoidance hole 8. In other words, the first sleeve 5 is designed as a split structure to achieve the purpose of avoiding the blocking member 3. When in use, after the blocking member 3 is extended into the first avoidance hole 8, the multiple first sub-sections 13 are spliced ​​into a whole to twist the torsion member. For example, the multiple first sub-sections 13 can be spliced ​​together by screws.

[0038] Preferably, the first sleeve 5 includes three first sub-sections 13, two of which are sector-shaped plates with a central angle of 90°, and another first sub-section 13 is a sector-shaped plate with a central angle of 180°. For example, the two first sub-sections 13 with a central angle of 90° can be located at the top, and the other first sub-section 13 with a central angle of 180° can be located at the bottom, and the three first sub-sections 13 together form a fully circular first sleeve 5.

[0039] Among them, for the first grooves opened on each first sub-section 13, the target area on the first sub-section 13 can be cut by cutting, so that the first avoidance hole 8 can be formed after the first sub-sections 13 are spliced ​​together. For two first sub-sections 13 with a central angle of 90°, the first grooves of the two are located at the edge position of contact with each other. After the two are spliced ​​together, the two first grooves can be connected to each other. Among them, for each first groove, the length of the first groove does not exceed the length of the first sub-section 13. In this case, the length of the formed first avoidance hole 8 does not exceed the length of the first sleeve 5.

[0040] For the ends of the sleeve 12 formed by splicing the first sub-sections 13, the three can be connected together by a locking plate and screws. For example, the surfaces of the two first sub-sections 13 with a central angle of 90° can be polished so that the surface in contact with the locking plate becomes flat. The locking plate can also be a flat plate, with one end of the locking plate resting on one of the first sub-sections 13 with a central angle of 90° and the other end resting on the other first sub-section 13 with a central angle of 90°. Then, two longer screws are used to fix the two first sub-sections 13 with a central angle of 90° on top of the first sub-section 13 with a central angle of 180°, one on the left and one on the right, so that the inner contours of the three first sub-sections 13 together form a sleeve 12 for engaging the to-be-twisted member. For example, the inner contour of the sleeve 12 can be a regular hexagon, and the shape of the sleeve 12 can be designed based on the shape of the nut 4.

[0041] Among them, the locking wrench also includes a torque wrench 10 and a torque loading disk 9; the torque loading disk 9 is arranged at the end of the first sleeve 5 away from the sleeve 12, and the torque loading disk 9 can be fixed on the end face of the first sleeve 5 by screws. The torque loading disk 9 is provided with a convex portion for the torque wrench 10 to engage on the side facing away from the first sleeve 5, and the bayonet 15 of the torque wrench 10 can clamp the convex portion. At this time, turning the handle of the torque wrench 10 can drive the first sleeve 5 to rotate along its own axis.

[0042] Figure 5 for Figure 2 A schematic diagram of the second sleeve in the use state; Figure 6 for Figure 2 Schematic diagram of the second sleeve in; Figure 5 and Figure 6 As shown, the locking wrench also includes a second sleeve 6, which is sleeved on the outside of the first sleeve 5, and the first sleeve 5 can rotate in the barrel of the second sleeve 6; one end of the second sleeve 6 is suitable for being connected to the part to be twisted. Usually, the part to be twisted includes a bolt 2 and a nut 4 sleeved on the bolt 2. In this application, the first sleeve 5 is suitable for engaging the nut 4 and twisting it, and the second sleeve 6 is suitable for engaging the bolt 2 and providing a reverse torque to the bolt 2 when the first sleeve 5 twists the nut 4 to prevent the bolt 2 from rotating with the nut 4.

[0043] A second avoidance hole 11 suitable for the blocking member 3 to extend is provided on the wall of the second sleeve 6 , and the second avoidance hole 11 can be provided in the same manner as the first avoidance hole 8 .

[0044] Along the circumference of the second sleeve 6, the second sleeve 6 is a split structure, comprising at least two joined second subsections 14. Each second subsection 14 is provided with a second groove. When joined, the multiple second grooves together form a second avoidance hole 11. In other words, the split design of the second sleeve 6 allows for the avoidance of the blocking member 3. During use, after the blocking member 3 is inserted into the second avoidance hole 11, the multiple second subsections 14 are joined together to secure the torsion member and provide counter torque. For example, the multiple second subsections 14 can be joined using screws.

[0045] Preferably, the second sleeve 6 includes three second sub-sections 14, two of which are sector-shaped plates with a central angle of 90°, and another second sub-section 14 is a sector-shaped plate with a central angle of 180°. For example, the two second sub-sections 14 with a central angle of 90° can be located at the top, and the other second sub-section 14 with a central angle of 180° can be located at the bottom, and the three together form a fully circular second sleeve 6.

[0046] Among them, for the second grooves opened on each second sub-section 14, the target area on the second sub-section 14 can be cut by cutting, so that multiple second grooves can form the second avoidance hole 11 after the second sub-sections 14 are spliced.

[0047] For the two second sub-sections 14 with a central angle of 90°, the second grooves of the two sub-sections 14 are located at the edges of each other, and after the two sub-sections are spliced, the two second grooves can be connected to each other. In particular, the length of each second groove does not exceed the length of the second sub-section 14. In this case, the length of the formed second avoidance hole 11 does not exceed the length of the second sleeve 6.

[0048] For one end of each second sub-section 14 used to fix the bolt 2 after splicing, the three can be connected together by a locking plate and a screw. For example, the surfaces of the two second sub-sections 14 with a central angle of 90° can be polished so that the surface in contact with the locking plate becomes a plane. The locking plate can also be a flat plate. One end of the locking plate is placed on one of the second sub-sections 14 with a central angle of 90°, and the other end is placed on the other second sub-section 14 with a central angle of 90°. Then, two longer screws are used to fix the two second sub-sections 14 with a central angle of 90° on the top of the second sub-section 14 with a central angle of 180°, one on the left and one on the right, so that the inner contours of the three second sub-sections 14 jointly form a bayonet 15 for engaging the bolt 2.

[0049] The locking wrench further includes a load-bearing rod 7 disposed on the outer wall of the second sleeve 6. The load-bearing rod 7 extends radially away from the second sleeve 6. For example, a load-bearing rod 7 can be mounted on each of the two second subsections 14 with a central angle of 90°. For example, the two load-bearing rods 7 can be symmetrically arranged. Alternatively, two load-bearing rods 7 can be symmetrically arranged on the second subsection 14 with a central angle of 180°. During use, the load-bearing rods 7 can be gripped to provide a greater reverse torque.

[0050] One end of the first sleeve 5 adapted to be connected to the torque loading disc 9 extends outward from the cylinder body of the second sleeve 6 to facilitate installation of the torque loading disc 9 .

[0051] When in use, you can first install the second sleeve 6 to fix the bolt 2, and then install the first sleeve 5 so that it is sleeved on the nut 4. After all installation is completed, use the torque wrench 10 to apply torque on the torque loading disk 9, and at the same time apply the same force to the load-bearing rod 7, thereby offsetting the force generated by the torque wrench 10 on the bolt 2.

[0052] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A locking wrench, characterized in that: At least: A first sleeve, one end of which is provided with a sleeve suitable for engaging the to-be-twisted member; A first avoidance hole is provided on the wall of the first sleeve, and the first avoidance hole is adapted to allow the blocking member in the narrow cavity to extend out from the first avoidance hole when the first sleeve extends into the narrow cavity; Wherein, along a projection plane parallel to the axial direction of the first sleeve, the width of the first avoidance hole is greater than the width of the blocking member, so that the first sleeve can rotate along its own axis by a preset angle before abutting against the blocking member; Along the circumferential direction of the first sleeve, the first sleeve is a split structure, comprising at least two first sub-parts spliced ​​together; Each of the first sub-parts is provided with a first groove, and after the first sub-parts are spliced ​​together, the plurality of first grooves together form the first avoidance hole; The invention also includes a second sleeve, which is sleeved on the outside of the first sleeve, and the first sleeve is capable of rotating within the barrel of the second sleeve; One end of the second sleeve is adapted to be connected to the to-be-twisted member, and is adapted to provide a reverse torque when the first sleeve twists the to-be-twisted member; A second avoidance hole suitable for the blocking member to extend is provided on the wall of the second sleeve; The first sleeve includes three first sub-parts, two of which are sector-shaped plates with a central angle of 90°, and another first sub-part is a sector-shaped plate with a central angle of 180°; The locking plate is also included, wherein the surfaces of the two first sub-sections with central angles of 90° in contact with the locking plate are flat surfaces, one end of the locking plate rests on one of the first sub-sections with a central angle of 90°, and the other end rests on the other first sub-section with a central angle of 90°, and screws are then used in conjunction with the locking plate to fix the two first sub-sections with central angles of 90° above the first sub-section with a central angle of 180°; Also included are a torque wrench and a torque loading plate; The torque loading disc is set on the end face of the first sleeve away from the sleeve through a screw. A convex portion for engaging with a torque wrench is set on the side of the torque loading disc facing away from the first sleeve. The bayonet of the torque wrench clamps the convex portion to drive the first sleeve to rotate along its own axis through the torque wrench.

2. The locking wrench according to claim 1, characterized in that Along the circumferential direction of the second sleeve, the second sleeve is a split structure, comprising at least two second sub-parts spliced ​​together; Each of the second sub-parts is provided with a second groove. After the second sub-parts are spliced ​​together, a plurality of the second grooves together form the second avoidance hole.

3. The locking wrench according to claim 2, characterized in that The second sleeve includes three second sub-parts, two of which are sector-shaped plates with a central angle of 90°, and another second sub-part is a sector-shaped plate with a central angle of 180°.

4. The locking wrench according to claim 1, characterized in that It also includes a load-bearing rod, which is arranged on the outer wall of the second sleeve, and the load-bearing rod extends in the radial direction of the second sleeve toward a direction away from the second sleeve.

5. The locking wrench according to claim 1, characterized in that: One end of the first sleeve adapted to be connected to the torque loading disc extends outward from the barrel of the second sleeve.

6. The locking wrench according to claim 1, wherein: The inner contour of the sleeve is a regular hexagon.

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