Tool for taking out sliding head screw in narrow space

Abstract

The utility model discloses a tool for taking out a sliding head screw in a narrow and small space, which comprises a sleeve, one end of the sleeve is provided with a containing cavity for containing a nut, a plurality of limiting holes arranged in the circumferential direction are formed in the sleeve, the limiting holes are drilled in the axial direction of the sleeve, and limiting rods are movably inserted in the limiting holes. The side portion of one end of the limiting rod abuts against the outer circle contour of the containing cavity. The connecting shaft is connected with the other end part of the sleeve; the handle is fixed to the connecting shaft, and the handle is rotated to drive the connecting shaft and the sleeve to rotate together and enable the multiple limiting rods to clamp the nut located in the containing cavity. According to the device, the multiple limiting rods rotate along with the handle to clamp a nut, then the screw is unscrewed and taken out, the connecting shaft selects different lengths to adapt to narrow and small space, and the device is simple in overall structural design, easy to assemble and suitable for screws with twisted nuts.

Description

Technical Field

[0001] The utility model relates to the technical field of improved design of wrench tools, in particular to a tool for removing sliding head screws in a narrow space. Background Art

[0002] Screws are the most common fasteners used in various mechanical devices in daily life and production. Threaded connections are a widely used, removable, fixed connection with advantages such as simple structure, reliable connection, and easy assembly and disassembly. However, overtightening during use, i.e., excessive preload, can prevent the screw from being unscrewed, causing the hexagonal wrench to slip in the nut, thus stripping the screw. Furthermore, in narrow and deep spaces, if the screw head strips during insertion, conventional tools cannot be used to remove it due to the limited space, making it impossible to complete maintenance and affecting equipment operation.

[0003] Currently in industrial production, there are two general ways to deal with the problem of hexagonal nuts being threaded in a narrow and deep space. One is to weld a new nut on the nut and then screw the new nut; the other is to use a hand drill to break the original nut and re-tap it. However, both of the above treatment methods have the problem of cumbersome operation.

[0004] In the prior art, patent publication number CN209273305U discloses a hexagon socket screw wrench, comprising a wrench rod and a wrench handle connected to the wrench rod. The wrench rod has a hollow portion extending axially therein, with a pressure rod and a rotating rod disposed therein. The pressure rod is pivoted on the rotating rod, with a push rod I and a push rod II connected to its ends, respectively. One end of the push rod I and push rod II is connected to the pressure rod, and the other end passes through the wrench rod and extends to the outside of the wrench rod. The nut of the hexagon socket screw has a hole that matches the push rod I or push rod II. The wrench of the utility model facilitates the removal of hexagon socket screws and is not easy to screw.

[0005] Patent publication number CN116512170A discloses a socket wrench comprising a rotating handle, a sleeve, and a blade. The rotating handle is connected to the sleeve to drive the sleeve to rotate about its axis. The blades are provided in a plurality of locations within the sleeve, spaced apart along the circumference of the sleeve. The blades have opposing backs and cutting edges, the backs being connected to the sleeve, the cutting edges extending along the sleeve axis, and spaces for accommodating nuts defined between the cutting edges. Therefore, the socket wrench of the present invention has advantages such as simple operation for tightening threaded hexagon socket nuts.

[0006] In the above technical solution, the wrench design is relatively complicated and cannot solve the technical problem that conventional tools cannot remove the threaded nut due to the limited space.

[0007] In order to solve one of the above problems, the present application provides a tool for removing sliding head screws in a narrow space. Utility Model Content

[0008] The purpose of the utility model is to solve the problems existing in the prior art and to propose a tool for removing sliding head screws in a narrow space. The tool clamps the nut as the handle rotates through multiple limit rods, and then loosens and removes the screw. The connecting shaft can be selected in different lengths to adapt to narrow spaces. The overall structural design is simple, easy to assemble and suitable for screws with twisted nuts.

[0009] To achieve the above-mentioned object, the present invention adopts the following technical solution: a tool for removing a sliding screw in a narrow space, comprising a sleeve, one end of which is provided with a receiving cavity for accommodating a nut, a plurality of circumferentially arranged limiting holes being provided in the sleeve, the limiting holes being drilled along the axial direction of the sleeve and movably inserted with a limiting rod, one end of the limiting rod being in contact with the outer contour of the receiving cavity;

[0010] A connecting shaft, the connecting shaft being connected to the other end of the sleeve;

[0011] The handle is fixed on the connecting shaft. Rotating the handle drives the connecting shaft and the sleeve to rotate together and causes multiple limiting rods to clamp the nut located in the accommodating cavity.

[0012] Furthermore, the limiting hole mentioned above passes through the sleeve and is communicated with the side of the accommodating cavity.

[0013] Furthermore, the plurality of limiting holes are equidistantly arranged along the outer circumference of the accommodating cavity.

[0014] Furthermore, the accommodating cavity as described above is a blind hole, and the limiting hole is an elongated hole biased toward the center of the accommodating cavity.

[0015] Furthermore, the sleeve as described above includes a cylinder body, a first pin hole is processed in the radial direction of the cylinder body, and a second pin hole is processed in the diameter direction of the connecting shaft, the second pin hole matches the first pin hole and realizes the hole-shaft connection through the pin shaft.

[0016] Furthermore, an annular mounting groove is processed on the cylinder as described above, the connecting shaft is sleeved outside the mounting groove, and a sealing ring is sleeved in the mounting groove.

[0017] Furthermore, the connecting shaft as described above includes a shaft body, one end of the shaft body is processed with a groove for accommodating the end of the sleeve, and the sleeve body is processed with a second pin hole passing through the groove outside.

[0018] Furthermore, a limiting protrusion is processed on the other end of the shaft body as described above, and a limiting groove is processed on the handle, and the limiting groove matches the limiting protrusion.

[0019] Furthermore, a screw hole is processed on the limiting protrusion as described above, and a countersunk hole penetrating the limiting groove is processed on the handle. The handle passes through the countersunk hole through a screw and is threadedly connected to the screw hole.

[0020] Furthermore, the number of the limiting holes and the number of the limiting rods are the same and are both three.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the device is movable through multiple limit rods inserted in the limit holes and clamping the nut as the handle rotates, and then loosening and removing the screw. The connecting shaft can be selected in different lengths to adapt to narrow spaces. The overall structural design is simple, the manufacturing cost is low, it is easy to assemble and suitable for screws with threaded nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 It is a top view of the utility model;

[0024] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0025] Figure 4 This is a schematic diagram of screw removal in the present invention;

[0026] Figure 5 for Figure 4 Explosion diagram.

[0027] In the figure: 1. Sleeve; 10. Cylinder body; 101. Mounting groove; 102. First pin hole; 11. Accommodating chamber; 12. Limit rod; 13. Limit hole; 2. Connecting shaft; 20. Shaft body; 21. Limit protrusion; 22. Second pin hole; 23. Pin shaft; 24. Sealing ring; 3. Handle; 31. Limit groove; 32. Screw. DETAILED DESCRIPTION

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "fixed", "mounted", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "mounted on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, 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, or it can be internal communication between the two elements.

[0030] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example

[0033] Reference Figure 1-5 As shown, the utility model is a tool for removing sliding screws in a narrow space, comprising a sleeve 1, one end of the sleeve 1 is provided with a accommodating cavity 11 for accommodating a nut, and a plurality of circumferentially arranged limiting holes 13 are provided in the sleeve 1, the limiting holes 13 are drilled along the axial direction of the sleeve 1 and a limiting rod 12 is movably inserted, one end side of the limiting rod 12 abuts against the outer circular contour of the accommodating cavity 11, for enabling the limiting rod 12 to clamp the nut in the accommodating cavity 11; a connecting shaft 2, the connecting shaft 2 is connected to the other end of the sleeve 1, and the length of the connecting shaft 2 is selected appropriately as needed to suit different narrow and long spaces; a handle 3, the handle 3 is fixed on the connecting shaft 2, which facilitates the operation of applying a rotational force. Turning the handle 3 drives the connecting shaft 2 to rotate together with the sleeve 1 and causes the plurality of limiting rods 12 to clamp the nut in the accommodating cavity 11, so that the twisted nut can be loosened and removed.

[0034] Further, combined Figure 1 and Figure 3It can be seen that the limiting hole 13 is set through the sleeve 1 and is connected to the side of the accommodating cavity 11. The limiting hole 13 is drilled in the axial direction of the sleeve 1, and can be aligned and drilled from both ends of the sleeve 1, which is convenient for drilling machine processing. The position of the limiting hole 13 is connected to the accommodating hole so that the limiting rod 12 can contact the edge of the accommodating hole, and then the limiting rod 12 is clamped on the outer circumference of the nut when the nut is tightened. Specifically, Figure 2 As shown, the plurality of limiting holes 13 are equidistantly arranged along the outer circumference of the accommodating cavity 11. Generally, the number of the limiting holes 13 and the limiting rods 12 are the same and are both three. Figure 3 As shown, the accommodating cavity 11 is a blind hole, and the limiting hole 13 is a long hole biased towards the center of the accommodating cavity 11. The cross-sectional shape of the long hole is two oppositely arranged circles connected by two tangents. The diameter of the circle is slightly larger than the outer diameter of the limiting rod 12. One of the tangents intersects with the cross section of the accommodating hole. Figure 2 As shown, the specific intersection angle parameters are selected according to actual needs, that is, when the limit rod 12 is in a relaxed state, the sleeve 1 can be put on the nut when the handle 3 is twisted in the direction of tightening the screw, and then when the handle 3 is twisted in the direction of loosening the screw, the limit rod 12 and the nut are in a locked state, so that the screw can be removed.

[0035] Further, refer to Figure 5 As shown, the sleeve 1 includes a barrel 10, which is cylindrical in shape. A first pin hole 102 is machined radially on the barrel 10, and a second pin hole 22 is machined in the diameter direction of the connecting shaft 2. The second pin hole 22 matches the first pin hole 102 and is connected to the shaft through a pin 23, which is used to transmit torque to facilitate screwing operations. In addition, an annular mounting groove 101 is machined on the barrel 10, and the connecting shaft 2 is sleeved outside the mounting groove 101. A sealing ring 24 is sleeved in the mounting groove 101 to maintain sealing between the two, as shown in FIG. Figure 3 shown.

[0036] Further, refer to Figure 5As shown, the connecting shaft 2 includes a shaft body 20, which is cylindrical in shape. One end of the shaft body 20 is machined with a groove to accommodate the end of the sleeve 1. The sleeve 10 is machined with a second pin hole 22 extending through the groove. This allows the pin 23 to pass through the second pin hole 22 and mate with the first pin hole 102 on the sleeve 10, thereby securing the connecting shaft 2 to the sleeve 1. This also facilitates the quick replacement and assembly of the two to meet different specifications and dimensional requirements. In addition, the other end of the shaft body 20 is machined with a limit protrusion 21, and the handle 3 is machined with a limit groove 31. The limit groove 31 matches the limit protrusion 21 and is used to limit the position between the handle 3 and the connecting shaft 2. In addition, the limit protrusion 21 is machined with a screw hole, and the handle 3 is machined with a countersunk hole extending through the limit groove 31. The handle 3 is threadedly connected to the screw hole by a screw 32 passing through the countersunk hole. The screw 32 threadably connects the handle 3 and the connecting shaft 2, facilitating the transmission of torque between the two brackets and facilitating the labor-saving screw tightening operation.

[0037] In the device of the present invention, the assembly and matching relationship of the various components involved, the hole-shaft connection, the sealing ring 24 and the screw 32 are existing technologies or materials. The relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0038] The above description is only a preferred specific embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A tool for removing sliding screws in narrow spaces, characterized in that: The invention comprises a sleeve (1), wherein one end of the sleeve (1) is provided with an accommodating cavity (11) for accommodating a nut, and a plurality of circumferentially arranged limiting holes (13) are provided in the sleeve (1), the limiting holes (13) are drilled along the axial direction of the sleeve (1) and a limiting rod (12) is movably inserted therein, and one end side of the limiting rod (12) contacts the outer circular contour of the accommodating cavity (11); A connecting shaft (2), wherein the connecting shaft (2) is connected to the other end of the sleeve (1); A handle (3) is fixed on the connecting shaft (2). Rotating the handle (3) drives the connecting shaft (2) and the sleeve (1) to rotate together and causes the plurality of limiting rods (12) to clamp the nut located in the accommodating cavity (11).

2. A tool for removing sliding head screws in a narrow space according to claim 1, characterized in that: The limiting hole (13) is arranged through the sleeve (1) and is communicated with the side of the accommodating cavity (11).

3. A tool for removing sliding head screws in a narrow space according to claim 2, characterized in that: The plurality of limiting holes (13) are equidistantly arranged along the outer circumference of the accommodating cavity (11).

4. A tool for removing sliding head screws in a narrow space according to claim 3, characterized in that: The accommodating cavity (11) is a blind hole, and the limiting hole (13) is a long hole biased towards the center of the accommodating cavity (11).

5. A tool for removing sliding head screws in a narrow space according to claim 4, characterized in that: The sleeve (1) comprises a cylinder (10), the cylinder (10) is radially processed with a first pin hole (102), and a second pin hole (22) is processed in the diameter direction of the connecting shaft (2), the second pin hole (22) matches the first pin hole (102) and realizes hole-shaft connection through a pin shaft (23).

6. A tool for removing sliding head screws in a narrow space according to claim 5, characterized in that: An annular mounting groove (101) is machined on the cylinder (10), the connecting shaft (2) is sleeved outside the mounting groove (101), and a sealing ring (24) is sleeved in the mounting groove (101).

7. A tool for removing sliding head screws in a narrow space according to any one of claims 1 to 6, characterized in that: The connecting shaft (2) comprises a shaft body (20), one end of which is processed with a groove for accommodating the end of the sleeve (1), and the sleeve body (10) is processed with a second pin hole (22) passing through the groove.

8. A tool for removing sliding head screws in a narrow space according to claim 7, characterized in that: The other end of the shaft body (20) is processed with a limiting protrusion (21), and the handle (3) is processed with a limiting groove (31), and the limiting groove (31) matches the limiting protrusion (21).

9. A tool for removing sliding head screws in a narrow space according to claim 8, characterized in that: The limiting protrusion (21) is processed with a screw hole, and the handle (3) is processed with a countersunk hole that penetrates the limiting groove (31). The handle (3) penetrates the countersunk hole through a screw (32) and is threadedly connected to the screw hole.

10. A tool for removing sliding head screws in a narrow space according to claim 9, characterized in that: The number of the limiting holes (13) and the number of the limiting rods (12) are the same and both are three.

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