A positioning steering ratchet wrench

Abstract

The utility model provides a positioning steering ratchet wrench, belonging to the technical field of hand tools. It solves the problem that the head and handle of the existing wrench are designed as an integrated whole, most of which can only be twisted on a plane or a convex surface, and the ratchet ring is easy to slip when twisting. The positioning steering ratchet wrench includes a movable head and a steering handle body; the center of the movable head is matched with a ratchet ring, and a receiving groove is provided on the inner side wall, and a one-way support tooth and a support tooth spring matched with the ratchet ring are arranged in the receiving groove; the movable head is formed with a convex part on the side facing the steering handle body, and the arc-shaped tail of the convex part is evenly provided with positioning teeth; the steering handle body is formed with a concave part on the side facing the movable head, and an axial hole is horizontally provided in the concave part, and a movable shaft, a tooth top pin and a locking spring are arranged in the axial hole, and a pin hole perpendicular to and connected to the axial hole is provided in the middle shorter groove of the concave part, and the tooth top pin is matched and installed in the pin hole to press upward against the positioning teeth of the convex part. The utility model has the advantage of further improving the practicality of the ratchet wrench.

Description

Technical Field

[0001] The utility model belongs to the technical field of hand tools and relates to a wrench, in particular to a positioning steering ratchet wrench. Background Art

[0002] The ratchet wrench results under the known prior art, such as a one-way ratchet wrench structure disclosed in the invention patent with application number 202010376269.5, the wrench body is provided with a accommodating space and a accommodating groove, the ratchet is installed in the accommodating space, and the toothed part is installed in the accommodating groove, when the wrench body is twisted counterclockwise, the equiangular teeth of the ratchet can be quickly disengaged from the equiangular teeth of the ratchet through the hetero-angle teeth, and the arc surface segment and the tooth segment of the toothed part are arc surfaces with non-coordinated centers, and do not abut against the outer periphery of the ratchet at the same time, and through the abutment of the fulcrum of the toothed part and the deviation of the center of gravity when the wrench is twisted, the toothed part can produce a seesaw-like swinging action, so as to achieve the effect of rapid engagement of the tooth segment with the outer periphery of the ratchet and actual slipping, which helps to improve the practicality of the ratchet wrench.

[0003] Since the head and handle of the above-mentioned wrench are of integrated design, the application of the wrench is mostly limited to twisting on a flat or convex surface, and it is impossible to twist bolt structures installed on non-flat surfaces such as grooves, so further design improvements are needed. Utility Model Content

[0004] The utility model aims to provide a positioning steering ratchet wrench in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: a positioning steering ratchet wrench, comprising a movable head and a steering handle body; a ratchet ring is installed in the center of the movable head, and continuous ratchet teeth are evenly arranged on the outer wall of the ratchet ring in a circumferential direction, and a receiving groove is opened on the inner wall of the movable head center on the side facing the steering handle body, and a one-way support tooth and a support tooth spring are arranged in the receiving groove, and the one-way support tooth is formed with a tooth portion matching with the ratchet teeth on the side facing the ratchet ring;

[0006] The movable head is formed with a convex portion on the side facing the steering handle body, and the tail of the convex portion is provided with an arc surface, and positioning teeth are evenly arranged on the arc surface along the direction of the structural line; the steering handle body is formed with a concave portion on the side facing the movable head, and the convex portion of the movable head and the concave portion of the steering handle body are connected by bolts; an axial hole is horizontally provided in the concave portion, and a movable shaft, a tooth top pin and a locking spring are provided in the axial hole, and a pin hole that is perpendicular to and communicates with the axial hole is provided in the shorter groove in the middle of the concave portion, and the tooth top pin is installed in the pin hole to press upward against the positioning teeth of the convex portion.

[0007] In the above-mentioned positioning steering ratchet wrench, the ratchet ring is provided with a first annular groove on the outer wall at the upper and lower ends of the ratchet teeth, and a second annular groove is provided at the upper and lower ends of the inner wall of the center of the movable head corresponding to the first annular groove, and a retaining spring is installed between the first annular groove and the second annular groove.

[0008] In the above-mentioned positioning steering ratchet wrench, a spring groove is provided on the side surface of the one-way support tooth, one end of the support tooth spring abuts against the spring groove, and the other end abuts against the arc-shaped side wall of the accommodating groove.

[0009] In the above-mentioned positioning steering ratchet wrench, the positioning teeth on the movable head convex part can be divided into a half-tooth type and a full-tooth type.

[0010] In the above-mentioned positioning steering ratchet wrench, a first bolt hole is provided at the center of the side surface of the movable head protrusion, and a second bolt hole and a third bolt hole are provided at the longer ends of the steering handle body recess respectively. The connecting bolt passes through the second bolt hole, the first bolt hole and the third bolt hole in sequence to realize a rotatable connection between the movable head protrusion and the steering handle body recess.

[0011] In the above-mentioned positioning steering ratchet wrench, a corresponding slot hole is provided in the second bolt hole to match the bolt head of the connecting bolt, and an internal thread is provided on the inner side wall of the third bolt hole to match the external thread at the tail of the connecting bolt, and the arrangement of the second bolt hole and the third bolt hole on the recess can be mirror-interchangeable.

[0012] In the above-mentioned positioning steering ratchet wrench, the movable shaft is provided with an inclined surface which is inclined from one end inside the shaft hole to the middle, and a blocking surface is formed at the end of the inclined surface.

[0013] In the above-mentioned positioning steering ratchet wrench, the top of the tooth top pin is formed with a toothed head matching with the inter-tooth groove of the positioning tooth, and the bottom is formed with a hemispherical bottom matching with the sliding of the movable shaft inclined surface.

[0014] Compared with the prior art, the positioning steering ratchet wrench provided by the utility model can not only realize the engagement braking of the ratchet ring, but also realize the rotatable adjustment and fixation between the wrench movable head and the steering handle body, so that the wrench can be extended into non-planar surfaces such as grooves for twisting, further improving the practicability of the wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the positioning steering ratchet wrench;

[0016] Figure 2 This is the result of the exploded view of the live head on the positioning steering ratchet wrench;

[0017] Figure 3This is the resultant exploded view of the steering handle body on the positioning steering ratchet wrench.

[0018] In the above figure, 100, movable head; 101, receiving groove; 102, second annular groove; 110, convex portion; 111, positioning teeth; 112, first bolt hole; 120, ratchet ring; 121, first annular groove; 122, ratchet teeth; 130, retaining spring; 140, one-way support teeth; 141, teeth portion; 142, spring groove; 150, support teeth spring;

[0019] 200, steering handle body; 210, recess; 211, second bolt hole; 212, third bolt hole; 213, pin hole; 214, shaft hole; 220, connecting bolt; 230, movable shaft; 231, inclined surface; 240, top pin; 250, locking spring. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 3 As shown, the positioning steering ratchet wrench comprises a movable head 100 and a steering handle body 200. The movable head 100 is formed with a convex portion 110 on the side facing the steering handle body 200, and the tail of the convex portion 110 is set as an arc surface, and the locating teeth 111 are evenly arranged on the arc surface along the structural line direction; the steering handle body 200 is formed with a concave portion 210 on the side facing the movable head 100, and the convex portion 110 of the movable head 100 and the concave portion 210 of the steering handle body 200 are connected by a rotatable bolt.

[0022] like Figure 2 As shown, a cylindrical space is opened in the center of the movable head 100, and a ratchet ring 120 is installed in it. Continuous ratchet teeth 122 are evenly arranged on the outer wall of the ratchet ring 120 in a circumferential direction. The upper and lower ends of the ratchet teeth 122 are opened on the outer wall of the ratchet ring 120. Second annular grooves 102 are opened at the upper and lower ends of the inner wall of the center of the movable head 100 corresponding to the first annular groove 121. A retaining spring 130 is installed between the first annular groove 121 and the second annular groove 102. The retaining spring 130 plays a role of connection and limiting, so that the ratchet ring 120 can rotate on the movable head 100.

[0023] The inner side wall at the center of the movable head 100 is provided with a crescent-shaped receiving groove 101 on the side facing the steering handle body 200, and a one-way support tooth 140 and a support tooth spring 150 are arranged in the receiving groove 101. The one-way support tooth 140 is formed with a tooth portion 141 on the side facing the ratchet ring 120, and the tooth portion 141 can mesh with the ratchet teeth 122; a spring groove 142 is provided on the side of the one-way support tooth 140, and one end of the support tooth spring 150 is against the spring groove 142, and the other end is against the arc-shaped side wall of the receiving groove 101. The support tooth spring 150 applies a lateral pressure to the one-way support tooth 140 under its own elastic force, so that the teeth at the meshing position of the ratchet teeth 122 and the tooth portion 141 are locked with each other to prevent slipping when the wrench is turned.

[0024] like Figure 3 As shown, a shaft hole 214 is transversely formed in the recess 210 of the steering handle body 200, and a locking spring 250 and a movable shaft 230 are sequentially arranged in the shaft hole 214 from the inside to the outside. The movable shaft 230 is provided with an inclined surface 231 inclined from one end of the inner side of the shaft hole 214 to the middle, and a blocking surface is formed at the end of the inclined surface 231. The movable shaft 230 protrudes from the plane of the side of the recess 210, which is convenient for the user to press.

[0025] The concave portion 210 is provided with a pin hole 213 which is perpendicular to and communicates with the shaft hole 214 at the shorter groove in the middle. A tooth top pin 240 is installed in cooperation with the pin hole 213. A tooth-shaped head which matches with the inter-tooth groove of the positioning tooth 111 is formed on the top of the tooth top pin 240. The tooth top pin 240 is embedded upwardly between the tooth grooves of the positioning tooth 111 of the convex portion 110 and is meshed and fixed therewith. A hemispherical bottom is formed at the bottom of the tooth top pin 240. The hemispherical bottom matches with the inclined surface 231 on the movable shaft 230, so as to reduce sliding friction when the movable shaft 230 moves laterally.

[0026] By pressing the movable shaft 230 to compress the locking spring 250, the tooth top pin 240 is pushed down as the inclined surface 231 is pushed inward, and the toothed head at the top of the tooth top pin 240 is separated from the positioning tooth teeth 111. At this time, the movable head 100 can rotate freely. According to the surface where the screw is to be turned, the movable head 100 and the steering handle body 200 are adjusted to a proper angle, and then the movable shaft 230 is released. After the movable shaft 230 is released, the locking spring 250 rebounds under its own elastic force, exerting a lateral outward force on the movable shaft 230, and the inclined surface 231 and the hemispherical bottom of the tooth top pin 240 are abutted against each other, so that the tooth top pin 240 is meshed with the positioning tooth teeth 111 upward, realizing the limit fixation of the movable head 100 at different angles.

[0027] Further explanation, a first bolt hole 112 is provided at the center of the side of the convex part 110 of the movable head 100, and a second bolt hole 211 and a third bolt hole 212 are provided at the longer ends of the concave part 210 of the steering handle body 200, respectively. A corresponding slot hole is provided in the second bolt hole 211 to match the bolt head of the connecting bolt 220, and an internal thread is provided on the inner wall of the third bolt hole 212 to match the external thread at the tail of the connecting bolt 220. The connecting bolt 220 passes through the second bolt hole 211, the first bolt hole 112 and the third bolt hole 212 in sequence, so as to realize a rotatable connection between the convex part 110 of the movable head 100 and the concave part 210 of the steering handle body 200. The second bolt hole 211 and the third bolt hole 212 on the concave part 210 can be interchanged in mirror image, and the installation insertion direction of the connecting bolt 220 between the convex part 110 and the concave part 210 can also be interchanged left and right.

[0028] Further explanation: the positioning teeth 111 on the convex part 110 of the movable head 100 can be divided into a half-tooth type and a full-tooth type. The half-tooth type is that the positioning teeth 111 are only half opened on the arc surface of the convex part 110, which is convenient for reducing the meshing sliding range of the tooth top pin 240; the full-tooth type is that the positioning teeth 111 are opened horizontally through the arc surface of the convex part 110, which is convenient for reducing the difficulty of opening and improving the processing efficiency.

[0029] 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.

[0030] 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. A positioning steering ratchet wrench, comprising a movable head (100) and a steering handle body (200), characterized in that: A ratchet ring (120) is installed in the center of the movable head (100), and continuous ratchet teeth (122) are evenly arranged on the outer side wall of the ratchet ring (120) in a circumferential direction. A receiving groove (101) is provided on the inner side wall of the center of the movable head (100) on the side facing the steering handle body (200), and a one-way support tooth (140) and a support tooth spring (150) are arranged in the receiving groove (101). The one-way support tooth (140) is formed with a tooth portion (141) that matches the ratchet teeth (122) on the side facing the ratchet ring (120); The movable head (100) is formed with a convex portion (110) on the side facing the steering handle body (200), and the tail of the convex portion (110) is provided with an arc surface, and the arc surface is evenly provided with positioning teeth (111) along the structural line direction; the steering handle body (200) is formed with a concave portion (210) on the side facing the movable head (100), and a bolt is used between the convex portion (110) of the movable head (100) and the concave portion (210) of the steering handle body (200). The recess (210) is provided with an axial hole (214) transversely therein, and a movable shaft (230), a tooth top pin (240) and a locking spring (250) are arranged in the axial hole (214); the recess (210) is provided with a pin hole (213) perpendicular to and communicating with the axial hole (214) at a shorter groove in the middle, and the tooth top pin (240) is installed in the pin hole (213) to press upward against the positioning teeth (111) of the convex part (110).

2. A positioning steering ratchet wrench according to claim 1, characterized in that: The ratchet ring (120) is provided with first annular grooves (121) on the outer side walls at the upper and lower ends of the ratchet teeth (122); the movable head (100) is provided with second annular grooves (102) at the upper and lower ends of the central inner side wall corresponding to the first annular groove (121); and a retaining spring (130) is installed between the first annular groove (121) and the second annular groove (102).

3. A positioning steering ratchet wrench according to claim 1, characterized in that: A spring groove (142) is provided on the side of the one-way support tooth (140); one end of the support tooth spring (150) abuts against the spring groove (142), and the other end abuts against the arc-shaped side wall of the accommodating groove (101).

4. A positioning steering ratchet wrench according to claim 1, characterized in that: The positioning teeth (111) provided on the convex portion (110) of the movable head (100) can be divided into a half-tooth type and a full-tooth type.

5. A positioning steering ratchet wrench according to claim 1, characterized in that: A first bolt hole (112) is provided at the center of the side surface of the convex portion (110) of the movable head (100), and a second bolt hole (211) and a third bolt hole (212) are provided at the longer ends of the side surface of the concave portion (210) of the steering handle body (200). The connecting bolt (220) passes through the second bolt hole (211), the first bolt hole (112) and the third bolt hole (212) in sequence, so as to realize a rotatable connection between the convex portion (110) of the movable head (100) and the concave portion (210) of the steering handle body (200).

6. A positioning steering ratchet wrench according to claim 5, characterized in that: A corresponding slot hole is provided in the second bolt hole (211) to match the bolt head of the connecting bolt (220), and an internal thread is provided on the inner wall of the third bolt hole (212) to match the external thread at the tail of the connecting bolt (220). The second bolt hole (211) and the third bolt hole (212) on the recess (210) are mirror-interchangeable.

7. A positioning steering ratchet wrench according to claim 1, characterized in that: The movable shaft (230) is provided with an inclined surface (231) which is inclined from one end inside the shaft hole (214) toward the middle, and a blocking surface is formed at the end of the inclined surface (231).

8. A positioning steering ratchet wrench according to claim 7, characterized in that: The top of the tooth top pin (240) is formed with a tooth-shaped head that matches the inter-tooth groove of the positioning tooth (111), and the bottom is formed with a hemispherical bottom that matches the inclined surface (231) of the movable shaft (230) for sliding.

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