An adjustable manual tap wrench

Abstract

The utility model provides an adjustable manual tap wrench, belonging to the technical field of wrenches. It solves the problem that the fixed block of the existing tap wrench is easily worn and loosened after long-term use, which makes the tap easy to tilt during tapping and the processed thread unqualified. The adjustable manual tap wrench includes a hinge frame, a first handle and a second handle; the first handle and the hinge frame are integrally formed, and the frame-shaped hollow part in the center of the hinge frame is provided with a pointed groove at one end facing the first handle; the second handle includes a coaxially arranged second handle tail and a slider rod, and a locking spring is installed between the second handle tail and the end of the slider rod to lock the threaded connection; the front end of the slider rod is connected to the sliding block inside the hinge frame, and the sliding block is formed with a toothed head on the side facing the pointed groove, and the toothed head and the pointed groove cooperate with each other to fix the tap inserted between the two. The utility model has the advantages of improving the strength, connection stability and service life of the tap wrench.

Description

Technical Field

[0001] The utility model belongs to the technical field of wrenches, in particular to an adjustable manual tapping wrench. Background Art

[0002] A tap wrench is a tool used to clamp hand taps when tapping. Conventional tap wrenches are usually equipped with a fixed block and a sliding block that cooperate with each other in the handle frame. The fixed block and the sliding block are respectively connected to the handles on both sides of the handle frame. Since the tap wrench needs to be manually rotated for tapping when in use, the fixed block is easily worn and loosened after being subjected to lateral torsional force for a long time, which makes it easy for the tap to tilt during tapping, and the processed thread is unqualified. Utility Model Content

[0003] The utility model aims to provide an adjustable manual tapping wrench in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved by the following technical solutions: an adjustable manual tapping wrench, comprising a hand-twisting frame, a first handle and a second handle; connecting columns are formed at both ends of the hand-twisting frame, wherein the connecting column at one end is integrally formed to form the first handle, and a mounting threaded hole coaxial with the first handle is provided at the center of the connecting column at the other end, and a pointed groove is provided at the end of the frame-shaped hollow part in the center of the hand-twisting frame facing the first handle;

[0005] The second handle includes a coaxially arranged second handle tail and a slider rod, a handle threaded hole is opened in the center of the second handle tail, the rear end of the slider rod extends into the handle threaded hole and is connected to the second handle tail, a locking spring is installed in the handle threaded hole between the second handle tail and the end of the slider rod, the front end of the slider rod passes through the installation threaded hole and is connected to the sliding block inside the trunnion frame, the sliding block is formed with a toothed head on the side facing the pointed groove, and the toothed head and the pointed groove cooperate with each other to fix the tap inserted between the two.

[0006] In the above-mentioned adjustable manual tap wrench, friction lines are formed on the outer surfaces of the first handle and the second handle at the ends of the handles away from the handle frame.

[0007] In the above-mentioned adjustable manual tapping wrench, a rear thread is formed at the rear end of the slider rod, and the rear thread cooperates with the handle thread hole to connect and fix the second handle tail to the slider rod.

[0008] In the above-mentioned adjustable manual tap wrench, the front end of the slider rod is formed with a conical head, an annular groove and a front thread in sequence from front to back, and the front thread cooperates with the mounting threaded hole to fix the slider rod to the hinge handle frame.

[0009] In the above-mentioned adjustable manual tapping wrench, the sliding block is provided with a sliding block groove coaxial with the sliding block rod on the side facing the sliding block rod, and the sliding block groove matches with the conical head and the annular groove of the sliding block rod.

[0010] In the above-mentioned adjustable manual tap wrench, a pin hole passing through the slider slot is vertically opened on the sliding block, and a pin column is installed in the pin hole. The position of the pin hole is such that the pin column just passes through the annular groove at the front end of the slider rod, so that the sliding block can be detachably fixed to the front end of the slider rod.

[0011] Compared with the prior art, the utility model provides an adjustable manual tap wrench, which improves the overall strength of the tap wrench by integrating the traditional fixed block, hinge frame and first handle into an integrated design, avoids the problem of wear and loosening of the fixed block due to long-term use, and increases the service life of the tap wrench; by installing a locking spring between the tail of the second handle and the end of the slider rod, the second handle and the sliding block obtain axial force after adjustment and installation, thereby locking the front and rear threaded connections to ensure the strength and stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the adjustable manual tap wrench;

[0013] Figure 2 This is the structural explosion diagram of the adjustable manual tap wrench;

[0014] Figure 3 It is a structural sectional view of the adjustable manual tap wrench.

[0015] In the above figure, 100, hinge frame; 101, pointed groove; 102, mounting threaded hole; 110, first handle; 111, friction pattern; 120, connecting column;

[0016] 200, second handle; 210, second handle tail; 211, handle threaded hole; 220, slider rod; 221, conical head; 222, annular groove; 223, front thread; 224, rear thread; 225, locking spring; 230, sliding block; 231, toothed head; 232, pin hole; 233, pin column; 234, slider groove. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1 to 3As shown, the adjustable manual tapping wrench includes a handle frame 100, a first handle 110 and a second handle 200. Connecting columns 120 are formed at both ends of the handle frame 100. The first handle 110 is integrally formed with the connecting column 120 at one end of the handle frame 100. A mounting threaded hole 102 coaxial with the first handle 110 is provided at the center of the connecting column 120 at the other end of the handle frame 100. The second handle 200 is matched and connected in the mounting threaded hole 102. The second handle 200 is coaxially arranged with the first handle 110. The front end of the second handle 200 is matched and connected with a sliding block 230 at the frame-shaped hollow part in the center of the handle frame 100. The first handle 110 and the second handle 200 are both provided with friction lines 111 on the outer side surfaces of the handle ends away from the handle frame 100. The friction lines 111 can increase the friction between the handle and the hand, so as to facilitate the user to exert force when manually tapping.

[0019] like Figure 2 and Figure 3 As shown, the second handle 200 includes a second handle tail 210 and a slider rod 220. The second handle tail 210 is provided with a handle threaded hole 211 at the center of the side facing the slider rod 220. The slider rod 220 extends from front to back into the handle threaded hole 211 and is connected to the second handle tail 210. A rear thread 224 is formed circumferentially at the rear end of the slider rod 220. The rear thread 224 cooperates with the handle threaded hole 211 to connect and fix the second handle tail 210 and the slider rod 220.

[0020] A conical head 221 is formed at the front end of the slider rod 220, and an annular groove 222 is formed circumferentially on the slider rod 220 at the rear side of the conical head 221. A front thread 223 is formed on the rear side of the annular groove 222. During installation, the front end of the slider rod 220 passes through the mounting threaded hole 102 at the center of the connecting column 120 of the hinge hand frame 100, and is connected to the sliding block 230 inside the hinge hand frame 100. The front thread 223 cooperates with the mounting threaded hole 102 to fix the slider rod 220 to the hinge hand frame 100.

[0021] To further illustrate, a locking spring 225 is installed in the handle threaded hole 211 between the second handle tail 210 and the end of the slider rod 220. After adjusting the depth of the second handle 200 extending into the central frame-shaped hollow part of the hinge handle frame 100, the locking spring 225 is in a compressed state. At this time, the second handle tail 210 and the slider rod 220 respectively obtain coaxial but opposite axial forces, so that the handle threaded hole 211 and the rear thread 224, and the installation threaded hole 102 and the front thread 223 are locked with each other, thereby ensuring the strength and stability of the threaded connection.

[0022] The sliding block 230 is provided with a sliding groove 234 coaxial with the sliding rod 220 on the side facing the sliding rod 220. The conical head 221 and the annular groove 222 at the front end of the sliding rod 220 extend into the sliding groove 234 to match with it. The sliding block 230 is vertically provided with a latch hole 232 passing through the sliding groove 234. A latch post 233 is installed in the latch hole 232. In order to achieve detachable fixation between the sliding block 230 and the sliding rod 220, the latch hole 232 is provided at any one end of the widest part of the annular groove 222 of the sliding rod 220 when they are matched, so that the latch post 233 just passes through the annular groove 222 at the front end of the sliding rod 220 to limit and fix it.

[0023] The frame-shaped hollow part in the center of the hinge handle frame 100 is provided with a pointed groove 101 at one end facing the first handle 110, and the sliding block 230 is formed with a toothed head 231 on one side facing the pointed groove 101. By rotating and adjusting the depth of the slider rod 220 in the frame-shaped hollow part in the center of the hinge handle frame 100, the distance between the toothed head 231 on the sliding block 230 and the pointed groove 101 can be adjusted, so that the toothed head 231 and the pointed groove 101 cooperate with each other to fix taps of different sizes inserted therebetween. The utility model improves the overall strength of the tap wrench by integrating the traditional fixing block, the hinge handle frame 100 and the first handle 110, avoids the problem of wear and loosening of the fixing block due to long-term use, and improves the service life of the tap wrench.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An adjustable manual tap wrench, comprising a handle frame (100), a first handle (110) and a second handle (200); characterized in that: The two ends of the handle frame (100) are formed with connecting columns (120), wherein the connecting column (120) at one end is integrally formed with the first handle (110), and the center of the connecting column (120) at the other end is provided with a mounting threaded hole (102) coaxial with the first handle (110), and a pointed groove (101) is provided at the end of the frame-shaped hollow portion at the center of the handle frame (100) facing the first handle (110); The second handle (200) comprises a second handle tail (210) and a slider rod (220) which are coaxially arranged. A handle threaded hole (211) is provided at the center of the second handle tail (210). The rear end of the slider rod (220) extends into the handle threaded hole (211) and is connected to the second handle tail (210). A locking spring (225) is installed in the handle threaded hole (211) between the second handle tail (210) and the ends of the slider rod (220). The front end of the slider rod (220) passes through the installation threaded hole (102) and is connected to a sliding block (230) inside the hand frame (100). The sliding block (230) is formed with a toothed head (231) on a side facing the pointed groove (101). The toothed head (231) and the pointed groove (101) cooperate with each other to fix the tap inserted between the two.

2. The adjustable manual tapping wrench according to claim 1, characterized in that: The first handle (110) and the second handle (200) are both provided with friction lines (111) on the outer surfaces of the handle ends away from the hinge frame (100).

3. The adjustable manual tapping wrench according to claim 1, characterized in that: A rear thread (224) is formed at the rear end of the slider rod (220), and the rear thread (224) cooperates with the handle thread hole (211) to connect and fix the second handle tail (210) and the slider rod (220).

4. The adjustable manual tapping wrench according to claim 1, characterized in that: The front end of the slider rod (220) is formed with a conical head (221), an annular groove (222) and a front thread (223) in sequence from front to back, and the front thread (223) cooperates with the mounting threaded hole (102) to fix the slider rod (220) to the hinge handle frame (100).

5. The adjustable manual tapping wrench according to claim 4, characterized in that: The sliding block (230) is provided with a sliding block groove (234) coaxial with the sliding block rod (220) on one side facing the sliding block rod (220), and the sliding block groove (234) matches with the conical head (221) and the annular groove (222) of the sliding block rod (220).

6. The adjustable manual tapping wrench according to claim 5, characterized in that: The sliding block (230) is vertically provided with a latch hole (232) passing through the slider groove (234), and a latch column (233) is installed in the latch hole (232). The latch hole (232) is arranged at a position such that the latch column (233) just passes through the annular groove (222) at the front end of the slider rod (220), so that the sliding block (230) can be detachably fixed to the front end of the slider rod (220).

Images