TWM563946U - Wrench steering structure - Google Patents

Abstract

A steering structure for a wrench includes: a rod body having a positioning portion; an operating member having a base portion and an arm standing at the base portion; a cylinder rotatably coupled to the two arms, the cylinder having a passage The hole is disposed between the two arms, the through hole receiving the part of the rod body; and a fastener which is coupled to the positioning portion by the cylinder. The rod body also has a polygonal section which is a square structure whose shape conforms to the shape of the through hole. In this way, the operating member and the rod body are connected through the cylinder, and the angle adjustment function is combined to effectively solve the problem of collapse or damage of the conventional operation member.

Description

Wrench steering structure

This creation relates to the field of angle adjustment of hand tools, and in particular to a steering structure suitable for use in a wrench.

The wrench is one of many hand tools for locking or unscrewing fasteners such as bolts or nuts. The types of wrenches are various, such as a ratchet wrench, a socket wrench, an open end wrench, a wrench and a oscillating wrench.

The structure of the oscillating wrench is usually a U-shaped operating member matched with a handle, and the two are connected by a pin, so that the oscillating wrench can be tightened in some narrow spaces. For specific construction, please refer to Taiwan Patent Nos. 450185, 569860, I241940 and I242483.

However, these oscillating wrenches are not only cumbersome in structure, but also increase the inventory of the parts (parts), and the assembly is not easy, the manufacturing cost is relatively increased, and the assembly time is excessively consumed. Moreover, in the operation of the angle adjustment, one of the two hands pushes the control component, and the other hand operates the wrench to rotate to a certain angle, so the operation is inconvenient.

In particular, the positioning of the oscillating head wrench is to be stuck with a single tooth, but there are drawbacks of instability. Secondly, during the locking or unscrewing operation, the U-shaped operating member may collapse or even cause damage.

In order to solve the above problems, the creator of the case proposed a wrench with an adjustable angle, and applied to many countries and obtained the CN 2912931, DE 202006007131, and TW. Patent rights such as M300591 and US 7237463 are well documented.

The creator of this case is not complacent, and inherits the spirit of excellence, and develops a new wrench. Its main purpose is to use a circular pivot structure to connect the operating member with the rod body, effectively solving the collapse or damage of the traditional operating device. Question.

Due to the above object, the steering structure of the creative wrench includes: a rod body having a positioning portion; an operating member having a base portion and an arm standing at the base portion; and a cylinder pivotally coupled to the two arms Upper, the cylinder has a through hole between the two arms, the through hole can receive a part of the rod body; a fastener is coupled to the positioning portion through the cylinder.

Wherein, the rod body further has a polygonal section, the polygonal section has a shape conforming to the shape of the through hole, and a positioning portion is formed on the side of the polygonal section. The polygon segment is a square structure.

Each of the arms has a hole through which the cylinder is allowed to pass, and a plurality of continuous teeth are formed in the circumferential direction on the wall surface of the arm. One of the two ends of the cylinder forms a movable groove, and a non-circular guide column stands in the center of the movable groove. A snap button is placed in the movable slot to be beyond the end face of the cylinder. The snap button has a plurality of teeth and a matching portion. The teeth are formed on the outer circumferential surface of the snap button, and each tooth is engaged. Or the corresponding teeth of the occlusion arm determine that the operating member swings to a certain angle with respect to the rod body, and the shape of the engaging portion is symmetrical with the shape of the guiding column, so that the snap button reciprocates relative to the cylinder to accommodate the partial guiding column.

The guide post has a central opening that allows an elastic member to be placed into the central bore of the guide post. The two ends of the elastic member respectively contact the rod body and the engaging portion, and provide the force required for the snap button to exceed the cylindrical end surface.

In addition, the operating member also has a non-circular drive segment that is integrally formed with the base and that is different from the arms at the base.

In this way, the wrench of the present invention connects the operating member to the shaft through the cylinder. It also has the function of angle adjustment, which effectively solves the problem of collapse or damage of traditional operating parts.

In order to make the above objects, features and advantages of the present invention more comprehensible, one or more preferred embodiments are described in detail with the accompanying drawings.

10‧‧‧Wrench

11‧‧‧ recess

12‧‧‧ rod body

13‧‧‧Steering structure

14‧‧‧Polygon segment

15‧‧‧ Positioning Department

16‧‧‧Several section

18‧‧‧Handle

20‧‧‧Operating parts

21‧‧‧ base

22, 23‧‧‧ arms

24‧‧‧ hole

25, 42‧‧‧ teeth

26‧‧‧Drive segment

27‧‧‧ accommodating department

28‧‧‧ Spring

29‧‧‧ beads

30‧‧‧Cylinder

31‧‧‧through hole

32‧‧‧Combination hole

33‧‧‧ center hole

34‧‧‧ Activity slot

35‧‧‧Guiding column

40‧‧‧fasteners

41‧‧‧ card button

43‧‧‧Flexible parts

44‧‧‧With the Ministry

46‧‧‧Flange

Figure 1 is an exploded perspective view of a preferred embodiment of the inventive wrench.

Figure 2 is a combined perspective view of the wrench.

Figure 3 is a side view of the steering structure.

Fig. 4 is a cross-sectional view taken along line B-B of Fig. 3.

Fig. 5 is a cross-sectional view taken along line A-A of Fig. 3.

Referring to Figures 1 through 5, a specific structure of the preferred embodiment of the wrench 10 is shown in which a steering structure 13 is coupled to a handle 18.

Briefly stated, the main zero portion of the steering structure 13 includes a shaft 12, an operating member 20, a cylinder 30 and a fastener 40. The rod body 12 has a positioning portion 15 therein. The operating member 20 has a base portion 21 and two arms 22, 23 having apertures 24 which are spaced apart from the base portion 21 to allow the cylinder 30 to be inserted into the aperture 24 and rotatably coupled to the arms 22, 23. The cylinder 30 has a through hole 31, and the rod body 12 is placed between the two arms 22, 23, and the through hole 31 can receive a part of the rod body 12. A fastener 40 is prevented from being separated from the cylinder 30 by a coupling hole 32 provided at the end of the cylinder 30, thereby engaging (e.g., screwing) the positioning portion 15.

Divided by thickness, the shaft 12 includes a polygonal section 14 and an elongated section 16. Wherein, the elongated section 16 forms one or more recesses 11 on one side or the other side. When the handle 18 encloses the elongated section 16, the recess 11 cooperates with the convex part of the handle 18 (not shown) to prevent the handle 18 from coming off. Rod 12. The polygonal section 14 is a thick square structure whose shape conforms to the shape of the through hole 31. A positioning portion 15 is formed on the side of the polygonal section 14. Therefore, the polygonal section 14 fits the wall surface of the through hole 31 to prevent the rod body 12 and the cylinder 30 from rotating relative to each other, but does not interfere with the rotation of the operating member 20 around the cylinder 30, thereby effectively solving the problem of collapse or damage of the conventional operating member.

In addition, the arm 23 has a plurality of teeth 25 which continuously protrude in the circumferential direction from the wall surface of the arm 24 which encloses the hole 24, and the depth of the restricting cylinder 30 into the hole 24 cannot pass through the arm 23. The cylinder 30 has a movable slot 34, and the movable slot 34 and the coupling hole 32 are at different ends of the cylinder 30, and a non-circular (square-shaped square) guide post 35 stands in the center of the movable slot 34, allowing a card to be inserted. It is normal for the button 41 to be placed in the movable groove 34 so as to be beyond the end surface of the cylinder 30. The snap button 41 has a plurality of teeth 42, a matching portion 44 and a flange 46. These teeth 42 are formed on the outer circumferential surface of the snap button 41, and each tooth 42 engages or engages the corresponding tooth 25 of the arm 23. The engaging portion 44 is a recessed portion of the latching button 41. The shape of the recess is symmetrical with the shape of the guiding post 35, so that the latching button 41 accommodates a partial guiding post 35, which can rotate in the same direction as the cylinder 30, and can Reciprocating relative to the cylinder 30 does not leave. The flange 46 extends radially outward from the outer circumferential surface of the snap button 41. The flange 46, also referred to as a flange, does not affect the engagement or snapping function of the two teeth 25, 42 and prevents jamming. The button 41 leaves the arm 23.

Thus, the snap button 41 is retracted into the movable slot 34, and the engagement or engagement relationship of the two teeth 25, 42 is released, and the operating member 20 is swung to a certain angle with respect to the lever 12. When the snap button 41 is exposed to the cylinder 30, the two teeth 25, 42 are again held in a meshing or snapping relationship, so that the operating member 20 is not allowed to swing back and forth in the shaft 12.

The fact that the click button 41 is exposed to the cylinder 30 means that the guide post 35 has a central hole 33 allowing an elastic member 43 to be placed in the center hole 33 of the guide post 35. The elastic member 43 is generally referred to as a compression spring, and the two ends of the compression spring respectively contact the rod body 12 and the engaging portion 44 to provide a force required for the snap button 41 to extend beyond the end surface of the cylinder 30.

In the aspect that the click button 41 does not leave, it means that there is a valley of teeth between the adjacent teeth 42 (not shown), and the valley is closed on the same side as the engaging portion 44, and naturally it will be engaged or bitten. The teeth 25 act as a blocking function to prevent the snap button 41 from being bounced off the arm 23 of the operating member 20 or the cylinder 30 by the elastic member 43.

In addition, the operating member 20 also has a drive section 26 that is not circular (the square is drawn). The drive section 26 is designed in one piece with the base 21, which is on the different sides of the base 21 from the arms 22, 23 for joining the required tools (such as sleeves or posts). The drive section 26 is formed on one side with a receiving portion 27 for a spring 28 to be inserted into the receptacle 27 together with a bead body 29. The bead body 29 is partially urged by the spring 28 to expose the surface of the drive section 26, preventing the tool from easily exiting the drive section 26.

Claims (7)

A steering structure of a wrench, comprising: a rod body (12) having a positioning portion (15); an operating member (20) having a base portion (21) and two arms (22, 23) standing on the base portion (21) a cylinder (30) that is rotatably coupled to the two arms (22, 23) having a through hole (31) in which the two arms (22, 23) are placed The through hole (31) can receive a portion of the rod body (12); a fastener (40) that is coupled to the positioning portion (15) by the cylinder (30). The steering structure of the wrench according to claim 1, wherein the rod body (12) further has a polygonal section (14), the shape of the polygonal section (14) being symmetrical with respect to the shape of the through hole (31), and The side of the polygonal section (14) forms a positioning portion (15). The steering structure of the wrench of claim 2, wherein the polygonal section (14) is a square structure. The steering structure of the wrench according to claim 1, wherein the arms (22, 23) each have a hole (24) through which the cylinder (30) is allowed to pass, and a hole is formed in the arm (23) in the circumferential direction ( The wall of 24) forms a plurality of continuous teeth (25); one of the two ends of the cylinder (30) forms a movable groove (34), and a non-circular guiding column (35) is standing in the center of the movable groove (34); The snap button (41) is placed in the movable slot (34) to be beyond the end surface of the cylinder (30). The snap button (41) has a plurality of teeth (42) and a matching portion (44). These teeth (42) Formed on the outer circumferential surface of the snap button (41), each tooth (42) engages or engages the corresponding tooth (25) of the arm (23), and determines that the operating member (20) swings to a certain angle with respect to the rod body (12). The shape of the engaging portion (44) is symmetrical with the shape of the guiding post (35), so that the snap button (41) reciprocates relative to the cylinder (30) to accommodate a partial guide post (35). The steering structure of the wrench according to claim 4, wherein the snap button (41) further has a flange (46) which is radially outward from the outer circumference of the snap button (41). The face extends outward. The steering structure of the wrench according to claim 4, wherein the guiding post (35) has a central hole (33); an elastic member (43) is inserted into the central hole (33) of the guiding post (35). The two ends of the elastic member (43) respectively contact the rod body (12) and the engaging portion (44), and provide the force required for the snap button (41) to extend beyond the end surface of the cylinder (30). The steering structure of the wrench according to claim 1, wherein the operating member (20) further has a non-circular driving section (26), and the driving section (26) is integrally designed with the base (21), and The arms (22, 23) are on different sides of the base (21).