Spiral adjustable tap wrench

Abstract

The utility model provides a spiral adjustable screw tap wrench, and belongs to the technical field of screw tap wrenches. The spiral adjustable tap wrench comprises a wrench body and an adjusting rod, the wrench body is mainly composed of two guide rail strips which are oppositely arranged in parallel, connecting end covers for connecting the two guide rail strips are installed at the two ends of the two guide rail strips, clamping frames are formed in the middle sections of the guide rail strips, and adjusting guide rails are arranged on the side walls of the opposite sides. The adjusting rod is installed between the two guide rail strips, a first sliding block, an adjusting screw and a second sliding block are sequentially formed from the clamping frame to the two ends, a V-shaped head is formed at the end, facing the clamping frame, of the first sliding block, the two sides of the first sliding block and the two sides of the second sliding block are embedded into the adjusting guide rails of the guide rail strips on the two sides, and the adjusting screw is sleeved with an adjusting knob. The clamp has the advantages of being simple in structure, easy to install and maintain, convenient to operate, accurate in clamping, not prone to loosening and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of tap wrenches, in particular to a spiral adjustable tap wrench. Background Art

[0002] A tap wrench is a tool used to clamp hand taps during tapping. Conventional tap wrenches typically only fit taps of fixed sizes and cannot be adjusted to fit taps of different sizes, thus limiting their practical application.

[0003] Patent application number CN201810734580.5 discloses a multifunctional tap and die wrench and its use method, comprising a tool holding body, a fixed handle, and a movable handle. The tool holding body is provided with a die clamping hole and a tap clamping hole. One end of the movable handle is threadedly connected to the tool holding body. The inner end of the handle extends into the tap clamping hole and is fitted with a tap clamping block. The clamping block cooperates with the clamping hole to clamp the tap, thereby meeting the clamping requirements of taps of different specifications and sizes. This patent requires aligning the tap clamping hole with the tap before adjusting the size of the clamping hole by adjusting the movable handle. This is inconvenient to operate and prone to loosening. Utility Model Content

[0004] The purpose of the utility model is to provide a spiral adjustable tap wrench to solve the above problems in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: a spiral adjustable tap wrench, comprising a wrench body and an adjusting rod, wherein the wrench body is mainly composed of two relatively parallel guide rails, both ends of the two guide rails are equipped with connecting end caps connecting the two, the middle section of the guide rail protrudes outward to form a clamping frame, the opening of the clamping frame on the inward side is in a right-angled V shape, and the guide rail is provided with an adjustment rail on the side wall on the opposite side;

[0006] The adjusting rod is installed between the two guide rails and is arranged at both ends of the guide rails with the clamping frame as the symmetrical center. The adjusting rod is formed with a first slider, an adjusting screw and a second slider in sequence from the clamping frame to both ends. The first slider is formed with a V-shaped head at one end facing the clamping frame, and the angle formed on the V-shaped head is a right angle. Both sides of the first slider and the second slider are embedded in the adjustment rails of the guide rails on both sides; an adjusting knob is mounted on the adjusting screw.

[0007] In the above-mentioned spiral adjustable tap wrench, a knob limit frame is provided on the opposite side of the guide bar at a position corresponding to the adjusting screw, and the adjusting knob is sleeved on the adjusting screw and installed in the knob limit frame, and the outer diameter of the adjusting knob is equal to the width of the knob limit frame.

[0008] In the above-mentioned spiral adjustable tap wrench, a knob threaded hole is provided at the center of the adjusting knob, and the knob threaded hole and the adjusting screw correspond to each other.

[0009] In the above-mentioned spiral adjustable tap wrench, the clamping frame and the V-shaped head of the first slider are combined to form an adjustable tap clamping hole.

[0010] Compared with the prior art, the present invention provides a spiral adjustable tap wrench that enables relative displacement between the adjusting screw and the adjusting knob by turning the adjusting knob, thereby driving the entire adjusting rod to move left and right along the adjusting guide rail between the guide rails, thereby realizing the adjustable size of the tap clamping hole. The utility model has a simple structure and is easy to install and maintain. When comparing the tap clamping, the adjustment operation can be performed by simply turning the adjusting knob with your fingers. The operation is convenient, the clamping is precise and not easy to loosen, and the utility model is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the spiral adjustable tap wrench;

[0012] Figure 2 This is a partial structural sectional view of the screw-type adjustable tap wrench;

[0013] In the above figure, 100, wrench body; 110, guide rail; 111, clamping frame; 112, knob limit frame; 113, adjustment guide rail; 120, connecting end cover; 200, adjustment rod; 210, first slider; 211, V-shaped head; 220, adjustment screw; 230, adjustment knob; 231, knob threaded hole; 240, second slider; 300, tap clamping hole. DETAILED DESCRIPTION

[0014] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0015] like Figures 1 to 2 As shown, this screw-type adjustable tap wrench includes a wrench body 100 and an adjustment rod 200. The wrench body 100 is primarily composed of two relatively parallel guide rails 110, each of which is connected by a connecting end cap 120. An adjustment rod 200 is mounted between the two guide rails 110. There are also two sets of adjustment rods 200, symmetrically arranged at each end of the guide rails 110. If the wrench body 100 or the adjustment rod 200 becomes worn or damaged, they can be disassembled and replaced by simply removing the connecting end caps 120 at both ends. This simple structure makes it easy to install and repair.

[0016] The middle section of guide rail 110 protrudes outward to form a clamping frame 111. The outer protrusion of clamping frame 111 can be arc-shaped or polygonal, and the inward opening is V-shaped. The angle between the Vs is right, which fits the square tenon at the end of the tap for clamping. Adjustment rails 113 are cut inward on opposite side walls of guide rail 110 and extend throughout the entire length of guide rail 110.

[0017] The adjustment rod 200 is integrally formed, with a first slider 210, an adjustment screw 220, and a second slider 240 formed thereon in sequence from the clamping frame 111 toward its ends. Both sides of the first slider 210 and the second slider 240 are embedded in the adjustment rails 113 of the guide bars 110 on either side. As the adjustment rod 200 moves left and right between the guide bars 110, it slides within the adjustment rails 113. The first slider 210 has a V-shaped head 211 formed at a right angle on the end facing the clamping frame 111. The clamping frame 111 and the V-shaped head 211 of the first slider 210 together form the tap clamping hole 300. When the V-shaped head 211 of the first slider 210 is flush with the side wall of the clamping frame 111, the tap clamping hole 300 can hold a maximum aperture. When the tips of the V-shaped heads 211 of the first sliders 210 at both ends abut against each other, the tap clamping hole 300 can hold a minimum aperture. The adjustable range of the tap clamping hole 300's aperture is between the above two values.

[0018] A knob limit frame 112 is provided on the opposite side of the guide bar 110 at a position corresponding to the adjusting screw 220. The adjusting knob 230 is sleeved on the adjusting screw 220 and installed in the knob limit frame 112. A knob threaded hole 231 is provided through the center of the adjusting knob 230. The knob threaded hole 231 corresponds to the adjusting screw 220, and the outer diameter of the adjusting knob 230 is equal to the width of the knob limit frame 112.

[0019] Therefore, when the adjusting knob 230 in the knob limit frame 112 is turned, a relative displacement occurs between the adjusting screw 220 and the adjusting knob 230. The adjusting knob 230 is restricted in the knob limit frame 112. Therefore, the adjusting screw 220 drives the entire adjusting rod 200 to move left and right along the adjusting guide rail 113 between the guide rails 110, thereby changing the position of the V-shaped head 211 on the first slider 210 in the clamping frame 111, thereby realizing the adjustable size of the tap clamping hole 300. When clamping the tap, the user only needs to use his fingers to adjust the operation. The operation is convenient, the clamping is precise, and it is not easy to loosen, which is highly practical.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0021] Although various terms are used in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A screw-type adjustable tap wrench, comprising a wrench body (100) and an adjusting rod (200), characterized in that: The wrench body (100) is mainly composed of two relatively parallel guide rails (110), both ends of the two guide rails (110) are equipped with connecting end caps (120) for connecting the two, the middle section of the guide rail (110) protrudes outward to form a clamping frame (111), the opening of the clamping frame (111) on the inward side is in a right-angled V-shape, and the guide rail (110) is provided with an adjustment guide rail (113) on the side wall on the opposite side. The adjusting rod (200) is installed between two guide rails (110) and is arranged at both ends of the guide rails (110) with the clamping frame (111) as the symmetrical center. A first slider (210), an adjusting screw (220) and a second slider (240) are sequentially formed on the adjusting rod (200) from the clamping frame (111) to both ends. The first slider (210) is formed with a V-shaped head (211) at one end facing the clamping frame (111). The angle formed on the V-shaped head (211) is a right angle. Both sides of the first slider (210) and the second slider (240) are embedded in the adjusting rails (113) of the guide rails (110) on both sides. The adjusting screw (220) is sleeved with an adjusting knob (230).

2. A screw-type adjustable tap wrench according to claim 1, characterized in that: A knob limiting frame (112) is provided on one side of the guide rail (110) at a position corresponding to the adjusting screw (220); the adjusting knob (230) is sleeved on the adjusting screw (220) and installed in the knob limiting frame (112); and the outer diameter of the adjusting knob (230) is equal to the width of the knob limiting frame (112).

3. The screw-type adjustable tap wrench according to claim 1, characterized in that: A knob threaded hole (231) is provided at the center of the adjusting knob (230), and the knob threaded hole (231) and the adjusting screw (220) are correspondingly matched with each other.

4. The screw-type adjustable tap wrench according to claim 1, characterized in that: The clamping frame (111) and the V-shaped head (211) of the first slider (210) are combined to form an adjustable tap clamping hole (300).

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