CN105058286A - Adjustable type open jaw wrench for butterfly nuts - Google Patents

Abstract

In view of the existing wing nut wrench, a wrench can only tighten a wing nut of a single specification, and at the same time, the wrench cannot solve the problem of tightening when the screw-in end of the wing nut is not open, and the use of a live-end wrench is easy to cause the wing nut to appear. To solve the problem of wing deformation and root fracture, an adjustable open jaw wing nut wrench is designed to realize the tightening of a series of wing nut specifications with a single wrench, and can realize the tightening of wing nuts without open ends. The wrench is composed of a handle, a fixed chuck assembly and a movable chuck assembly. The gap between the wings of the wing nut clamped in the two assemblies can be adjusted by the knob, and the movable chuck assembly, the handle and the fixed chuck assembly can also be adjusted. Change the spacing of the jaws by the knob. It is suitable for various occasions where wing nuts are fastened.

Description

An adjustable open jaw wing nut wrench

technical field

The present invention relates to a wrench, mainly relates to a wing nut wrench, in particular to an adjustable open jaw wing nut wrench.

Background technique

Wing nuts are composed of a round platform with threaded holes and two side wings. Usually, the bolts are tightened manually, but the torque is small when the two side wings are manually rotated. The tightened wing nut The locking force is weak, and it is easy to loosen when subjected to external forces such as vibration, thereby affecting the normal operation of the assembled appliance. There are two patents that solve the above problems well, but there are still some shortcomings: Patent 1 (ZL201420476861.2, 2015.05.13, a wrench for wing nuts) invented a fixed wing nut with handle Wrench, but the wrench can only be used for the fastening of a wing nut of a single specification, and requires that the screw-in end of the wing nut must be open, otherwise the wrench cannot cooperate with the wing nut for fastening; Patent 2 (ZL201320695123.2, 2014.06. 04, special wrench for grounding terminal wing nut) invented a sleeve-type wing nut wrench with a rotating handle, using the slot on the sleeve to cooperate with the wing of the wing nut to realize the tightening of the wing nut. However, this wrench can only be used for the fastening of a wing nut of a single specification, and cannot solve the problem of fastening when the screw-in end of the wing nut is not open. Although Patent 1 and Patent 2 have solved the fastening problem of wing nuts, there are still two major problems: 1) the wrench can only be used for the fastening of wing nuts of a single specification, if it is to be applicable to wing nuts of multiple specifications Tightening requires the production of a series of wrenches; 2) Neither of the two wrenches can solve the problem of fastening when the screw-in end of the wing nut is not open, such as the wing nut (3) in Figure 1 due to the obstruction of the upper and lower plates (2) Patent 1 and Patent 2 spanners cannot pass through the screw rod (4) and cooperate with the wing nut for fastening operation. Although the wing nut can be tightened directly with an adjustable wrench in the non-open state, since the two wings of the wing nut are thin plates, when the wrench and the wing nut are tightened, only one side of the wing is stressed. As a result, the stress concentration at the root of the flank is prone to deformation of the flank and fracture of the root.

Contents of the invention

The existing wing nut wrench can only fasten wing nuts of a single specification with one wrench, and the wrench cannot solve the problem of tightening when the screw-in end of the wing nut is not open. fastening, but it is very prone to flank deformation and root fracture. In order to solve the above problems, an adjustable open jaw wing nut wrench was invented, which can realize the tightening of a series of wing nut specifications with a single wrench, and achieve no Tightening of open-ended wing nuts.

The technical solution adopted by the present invention to solve the technical problem is: an adjustable open jaw wing nut wrench, which is composed of two parts: the handle and the fixed chuck assembly (7) and the movable chuck assembly (8). Between the movable chuck adjusting rod (21) of the J-shaped movable chuck (16) in the movable chuck assembly (8), the handle and the fixed chuck (18) fixed chuck in the handle and the fixed chuck assembly (7) end (27) of the movable chuck adjusting rod guide fixed groove (28) to form an open jaw (40) and realize the grip between the handle and the fixed chuck assembly (7) and the movable chuck assembly (8). The adjustment of the gap between the openings (40); the handle and the fixed chuck assembly (7) and the movable chuck assembly (8) are respectively installed on the handle and the fixed chuck (18) and the J-shaped movable chuck (16). Hex screw (12), movable block (13), movable block adjusting knob (14) and movable block adjusting rod (15) realize the adjustment of the distance between the clamping surface (23) and the movable block clamping surface (36).

The beneficial effect of the present invention is that, compared with the existing wrench, adopting an adjustable open jaw wing nut wrench of the present invention solves the following three problems: The problem of tightening wing nuts, a single wrench can realize the tightening and loosening of wing nuts of different specifications; 2) Solve the problem that the wing nut wrench cannot be used for tightening when the wing nut is installed in a non-open state; 3) Solve the problem that when the butterfly nut is tightened with an adjustable wrench, the wings of the wing nut can only be stressed on one side and are easily deformed and the root is broken.

Description of drawings

Figure 1 is a schematic diagram of the installation of wing nuts.

Fig. 2 is an assembly diagram of an adjustable open-jaw wing nut wrench according to the present invention.

Fig. 3 is an assembly diagram of the movable chuck assembly (8) in Fig. 2 .

Fig. 4 is a schematic diagram of the assembly of the handle and fixed chuck assembly (7) in Fig. 2 .

Fig. 5 is a schematic structural view of the J-shaped movable chuck (16) in Fig. 3 .

Fig. 6 is a schematic structural view of the handle and the fixed chuck (18) in Fig. 4 .

Fig. 7 is a schematic diagram of the forward structure of the movable block (13) in Fig. 3 .

Fig. 8 is a schematic diagram of the reverse structure of the movable block (13) in Fig. 3 .

Fig. 9 is a schematic diagram of the use of the present invention.

In the figure: 1. Wing nut, 2. Flat plate, 3. Wing nut, 4. Screw, 7. Handle and fixed chuck assembly, 8. Swivel chuck assembly, 11. Jaw adjustment knob, 12. Inner hexagon Screws, 13. Movable block, 14. Movable block adjustment knob, 15. Movable block adjustment rod, 16. J-shaped collet, 18. Handle and fixed collet, 21. Movable collet adjustment rod, 22. Arc surface , 23. Clamping surface, 24. Movable block installation groove, 25. Movable block adjustment rod guide fixed groove, 26. Movable block adjustment knob groove, 27. Fixed chuck end, 28. Movable chuck adjustment rod guide fixed groove, 29. Jaw adjustment knob groove, 30. Triangular protrusion, 31. Handle, 35. Countersunk hole, 36. Clamping surface of movable block, 37. Through hole, 38. Fixed groove of movable block adjustment rod, 40. Jaw .

Detailed ways

Referring to accompanying drawing 1, the wing nut forms two different installation methods with two flat plates (2) and the screw rod (4), the wing nut (1) is an open installation, and the wing nut (3) is a non-open installation Install.

Referring to accompanying drawing 2, accompanying drawing 3 and accompanying drawing 6, a kind of adjustable open jaw wing nut wrench is made up of two parts of handle and fixed collet assembly (7) and movable collet assembly (8). Remove the jaw adjustment knob (11) on the collet assembly (8), and then insert the collet adjustment rod (21) of the J-shaped collet (16) in the collet assembly (8) into the handle and the fixing clip The movable chuck adjusting rod of the handle and the fixed chuck (18) in the head assembly (7) is guided into the fixing groove (28). Before inserting, place the jaw adjustment knob (11) on the handle and the fixed chuck (18). In the jaw adjustment knob groove (29), turn the jaw adjustment knob (11), and the wing nut wrench is installed.

With reference to accompanying drawing 3, accompanying drawing 5, accompanying drawing 7 and accompanying drawing 8, a kind of adjustable open jaw wing nut wrench, movable collet assembly (8) is made of jaw adjustment knob (11), hexagon socket head cap screw (12 ), the movable block (13), the movable block adjusting knob (14), the movable block adjusting rod (15) and the J-shaped movable chuck (16), firstly, the movable block adjusting knob (14) is placed in the J-shaped movable chuck (16) in the movable block adjustment knob groove (26), then the movable block adjustment rod (15) is inserted into the fixed groove (25) through the movable block adjustment rod of the J-shaped movable chuck (16), and the movable block adjustment knob is rotated (14) Movable block adjustment rod (15) will be gradually deepened, and the movable block (13) that will be inserted into hexagon socket head cap screw (12) is put into the movable block installation groove (24) of J shape collet (16), when moving Match with the movable block adjusting rod fixed groove (38) of movable block (13) when block adjusting rod (15) stretches into movable block mounting groove (24), turn hexagon socket head cap screw (12) and movable block adjusting rod (15) ) on the threaded hole is fastened, and the head of the screw (12) is sunk into the counterbore (35) of the movable block (13) to form the movable chuck assembly (8).

With reference to accompanying drawing 3, a kind of adjustable open jaw wing nut wrench, the jaw adjustment knob (11) and the movable block adjustment knob (14) in the movable collet assembly (8), in the central hole are rectangular full threads, There are non-slip stripes on the outer surface of the cylinder; the handle and the fixed chuck assembly (7) and the movable block adjusting rod (15) in the movable chuck assembly (8) are rectangular full threads, and there are a pair of relatively parallel planes on the shaft axis. One end of the rod body has a threaded hole.

With reference to accompanying drawing 4, accompanying drawing 6, accompanying drawing 7 and accompanying drawing 8, a kind of adjustable open jaw butterfly nut wrench, handle and fixed collet assembly (7) are made of hexagon socket head cap screw (12), movable block (13 ), the movable block adjustment knob (14), the movable block adjustment rod (15) and the handle and the fixed chuck (18); firstly, the movable block adjustment knob (14) is placed on the handle and the fixed chuck (18) In the movable block adjustment knob groove (26) in the head end (27), then the movable block adjustment rod (15) is inserted into the fixed groove (25) through the handle and the movable block adjustment rod of the fixed chuck (18), and rotated The block adjustment knob (14) and the movable block adjustment rod (15) will gradually go deeper, and the movable block (13) inserted into the hexagon socket head screw (12) will be put into the movable block installation groove (24) of the handle and the fixed chuck (18) , when the movable block adjustment rod (15) stretches into the movable block installation groove (24), it cooperates with the movable block adjustment rod fixing groove (38) of the movable block (13), and turns the hexagon socket head cap screw (12) to adjust with the movable block. The threaded hole on the rod (15) is fastened, and the head of the hexagon socket head cap screw (12) is turned to sink into the counterbore (35) of the movable block (13) to form a handle and a fixed chuck assembly (7) .

Referring to accompanying drawing 5, an adjustable open jaw wing nut wrench, the J-shaped collet (16) in the collet assembly (8), the overall shape is J-shaped, including the collet adjustment rod (21) And the structure of arc surface (22), clamping surface (23), movable block installation groove (24), movable block adjusting rod guide fixed groove (25) and movable block adjusting knob groove (26), wherein: movable chuck adjustment There is a rectangular thread on the rod (21), and there is a pair of relatively parallel planes on the rod body axially; the arc surface (22) is to facilitate the entry structure of the round table at the bottom of the wing nut; the clamping surface (23) is a The contact surface of the movable block; the movable block installation groove (24) is the installation and the working space of the movable block (13); Block adjustment knob groove (26) is the installation space of movable block adjustment knob (14).

With reference to accompanying drawing 6, a kind of adjustable open jaw wing nut wrench, handle and fixed collet assembly (7) are made up of fixed collet end (27) and handle (31), and fixed collet end (27) comprises circle Arc surface (22), clamping surface (23), movable block mounting groove (24), movable block adjusting rod guide fixing groove (25), movable block adjusting knob groove (26), movable chuck adjusting rod guiding fixing groove ( 28), jaw adjustment knob groove (29) and triangular protrusion (30) structure, wherein: the arc surface (22) is to facilitate the entry structure of the round platform at the bottom of the wing nut; the clamping surface (23) is the The contact surface of the flanks; the movable block mounting groove (24) is the installation and working space of the movable block (13); the movable block adjusting rod guide fixing groove (25) is the fixing and guiding space of the movable block adjusting rod (15), and is rectangular Cross-section; the movable block adjusting knob groove (26) is the installation space of the movable block adjusting knob (14); the movable chuck adjusting rod guide fixing groove (28) is the fixing and guiding space of the movable chuck adjusting rod (21), which is rectangular Section; the jaw adjustment knob groove (29) is the installation space of the jaw adjustment knob (11), which is a non-closed structure; the triangular protrusion (30) is used to prevent the jaw adjustment knob (11) from being guided along the movable chuck adjustment rod The fixed slot (28) moves toward the handle (31); the handle (31) is used to increase the tightening torque.

With reference to accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7 and accompanying drawing 8, a kind of adjustable open jaw wing nut wrench, handle and fixed chuck assembly (7) and movable chuck The inner hexagon screw (12), movable block (13), movable block adjustment knob (14) and movable block adjustment rod (15) installed on the component (8) are on the same axis as the movable block adjustment rod guide fixing groove (25) .

With reference to accompanying drawing 7 and accompanying drawing 8, a kind of adjustable open jaw butterfly nut wrench, movable block (13) is rectangular parallelepiped shape as a whole, contains circular arc surface (22), countersunk hole (35), movable block clamping Surface (36), through hole (37) and movable block adjustment rod fixing groove (38) structure, wherein the circular arc surface (22) is to facilitate the entry of the round table at the bottom of the wing nut; the countersunk hole (35) is used for hexagon socket screws (12) entry of the head; movable block clamping surface (36) is the contact surface with wing nut flank; through hole (37) is the installation passing hole of hexagon screw (12); movable block adjusting rod fixing groove ( 38) be used for the fixed cooperation with movable block adjusting rod (15).

Referring to accompanying drawing 9, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, accompanying drawing 7 and accompanying drawing 8, an adjustable open jaw wing nut wrench, the first use case, wing nut (1) In the open state: Turn the movable block adjustment knob (14) to ensure that the distance between the clamping surface (23) and the movable block clamping surface (36) is greater than the thickness of the wings of the wing nut, and turn the jaw adjustment knob (11) Adjust the distance between the jaws (40) to ensure that the bottom round table of the wing nut (1) can enter between the four arc surfaces (22), insert the wrench from the upper part of the screw rod (4) downward, and tighten it The handle and the movable block (13) in the fixed collet assembly (7) and the movable collet assembly (8), the flanks of the wing nut (1) are clamped, and the handle (31) of the wrench can be turned to fasten or Loosen the wing nut; in the second use case, the wing nut (3) is in a non-open state, at this time the wrench cannot be inserted directly from the top of the screw (4): turn the movable block adjustment knob (14) to ensure that the clamping surface The distance between (23) and the clamping surface (36) of the movable block is greater than the thickness of the wings of the wing nut, and the jaw adjustment knob (11) is turned to ensure that the handle and the fixed chuck assembly (7) and the movable chuck assembly (8) ) between the jaws (40) is greater than the diameter of the screw (4), insert the wrench from the jaws (40) into the screw (4), adjust the jaws (40) spacing to ensure that the four arc surfaces (22) The bottom round platform of the wing nut (3) can enter the space, insert the wrench downward from the middle of the screw rod (4), and tighten the handle and the movable parts in the fixed chuck assembly (7) and movable chuck assembly (8). Block (13), the flank of wing nut (3) is clamped, can rotate the handle (31) of wrench, tightens or unclamps wing nut.

Claims (9)

1. An adjustable open-jaw wing nut wrench is characterized in that the wing nut wrench is composed of a handle and a fixed chuck assembly (7) and a movable chuck assembly (8). The movable chuck adjusting rod (21) of the J-shaped movable chuck (16) in the chuck assembly (8), the handle and the fixed chuck (18) and the fixed chuck end (27) of the fixed chuck assembly (7) The structure of the movable chuck adjusting rod guide fixing groove (28) cooperates to form an open jaw (40) and realize the jaw (40) between the handle and the fixed chuck assembly (7) and the movable chuck assembly (8). The adjustment of the spacing; the handle and the fixed chuck assembly (7) and the movable chuck assembly (8) are respectively installed on the handle and the fixed chuck (18) and the J-shaped movable chuck (16) by the inner hexagon screw (12 ), movable block (13), movable block adjusting knob (14) and movable block adjusting rod (15) realize the adjustment of the distance between the clamping surface (23) and the movable block clamping surface (36). 2. A kind of adjustable open jaw wing nut wrench according to claim 1, characterized in that the movable chuck assembly (8) consists of jaw adjustment knob (11), hexagon socket head cap screw (12), movable block ( 13), the movable block adjustment knob (14), the movable block adjustment rod (15) and the J-shaped movable chuck (16). First, the movable block adjustment knob (14) is placed in the active block adjustment knob groove (26), then insert the movable block adjustment rod (15) through the movable block adjustment rod guide fixing groove (25) of the J-shaped movable chuck (16), and turn the movable block adjustment knob (14) to move the block Adjusting rod (15) will gradually deepen, and the movable block (13) that will insert hexagon socket head cap screw (12) is put into the movable block installation groove (24) of J shape collet (16), when movable block adjusting rod (15 ) into the movable block mounting groove (24) and cooperate with the movable block adjusting rod fixing groove (38) of the movable block (13), turn the hexagon socket head cap screw (12) and the threaded hole on the movable block adjusting rod (15) Carry out fastening, turn the head of hexagon socket head cap screw (12) and sink in the counterbore (35) of movable block (13), promptly form movable chuck assembly (8). 3. An adjustable open jaw wing nut wrench according to claim 1, characterized in that the handle and the fixed chuck assembly (7) are adjusted by the hexagon socket head cap screw (12), the movable block (13), and the movable block Knob (14), movable block adjustment rod (15) and handle and fixed chuck (18); firstly put the movable block adjustment knob (14) on the handle and fixed chuck (18) to fix the chuck end (27) In the movable block adjustment knob groove (26), then insert the movable block adjustment rod (15) through the handle and the movable block adjustment rod of the fixed chuck (18) into the fixed groove (25), and turn the movable block adjustment knob (14 ) The movable block adjustment rod (15) will be gradually deepened, and the movable block (13) inserted into the hexagon socket head cap screw (12) will be put into the movable block installation groove (24) of the handle and the fixed chuck (18), when the movable block is adjusted When the bar (15) stretches into the movable block mounting groove (24), it cooperates with the movable block adjusting rod fixing groove (38) of the movable block (13), and the screw (12) is screwed on the movable block adjusting rod (15). Fasten the threaded hole, and the head of the screw (12) sinks into the counterbore (35) of the movable block (13) to form the handle and the fixed chuck assembly (7). 4. A kind of adjustable open jaw wing nut wrench according to claim 1, characterized in that the jaw adjustment knob (11) and the movable block adjustment knob (14), the central hole is a rectangular full thread, and the cylindrical outer The surface has non-slip stripes. 5. An adjustable open jaw wing nut wrench according to claim 1, characterized in that the handle and the movable block adjusting rod (15) in the fixed chuck assembly (7) and the movable chuck assembly (8) The top is a rectangular full thread, a pair of relatively parallel planes are arranged on the rod body axially, and there is a threaded hole at one end of the rod body. 6. An adjustable open jaw wing nut wrench according to claim 1, characterized in that the J-shaped movable chuck (16) in the movable chuck assembly (8) has a J-shaped overall shape, including movable Chuck adjustment rod (21), arc surface (22), clamping surface (23), movable block installation groove (24), movable block adjustment rod guide fixing groove (25) and movable block adjustment knob groove (26) structure , wherein: the movable chuck adjusting rod (21) has a rectangular thread, and the rod body has a pair of relatively parallel planes in the axial direction; the arc surface (22) is to facilitate the entry structure of the round table at the bottom of the butterfly nut; the clamping surface (23 ) is the contact surface with the wings of the wing nut; the movable block mounting groove (24) is the installation and working space of the movable block (13); The space is a rectangular section; the movable block adjusting knob groove (26) is the installation space of the movable block adjusting knob (14). 7. An adjustable open jaw wing nut wrench according to claim 1, characterized in that the handle and the fixed chuck assembly (7) are composed of the fixed chuck end (27) and the handle (31), and the fixed clip The head end (27) includes an arc surface (22), a clamping surface (23), a movable block mounting groove (24), a movable block adjusting rod guide fixing groove (25), a movable block adjusting knob groove (26), a movable clamp Head adjustment rod guide fixing groove (28), jaw adjustment knob groove (29) and triangular protrusion (30) structure, wherein: the arc surface (22) is to facilitate the entry structure of the round table at the bottom of the wing nut; the clamping surface ( 23) is the contact surface with the wings of the wing nut; the movable block installation groove (24) is the installation and the working space of the movable block (13); The fixed and guiding space is a rectangular section; the movable block adjustment knob groove (26) is the installation space of the movable block adjustment knob (14); The fixing and guiding space has a rectangular cross-section; the jaw adjustment knob groove (29) is the installation space for the jaw adjustment knob (11), and is a non-closed structure; the triangular protrusion (30) is used to prevent the jaw adjustment knob (11) Move toward the direction of the handle (31) along the guide fixing groove (28) of the movable chuck adjustment rod; the handle (31) is used to increase the tightening torque. 8. An adjustable open jaw wing nut wrench according to claim 1, characterized in that the handle, the fixed chuck assembly (7) and the movable chuck assembly (8) are equipped with hexagon socket head screws (12) , movable block (13), movable block adjustment knob (14) and movable block adjustment rod (15) are on the same axis with the movable block adjustment rod guide fixing groove (25). 9. A kind of adjustable open jaw wing nut wrench according to claim 1, characterized in that the movable block (13) is in the shape of a cuboid as a whole, and contains an arc surface (22), a countersunk hole (35), a movable The block clamping surface (36), the through hole (37) and the fixed groove (38) structure of the movable block adjustment rod, wherein the arc surface (22) is to facilitate the entry of the round platform at the bottom of the butterfly nut; the counterbore (35) is used for The entry of the head of the inner hexagon screw (12); the clamping surface of the movable block (36) is the contact surface with the wings of the wing nut; the through hole (37) is the installation through hole of the hexagonal screw (12); the adjusting rod of the movable block Fixed groove (38) is used for the fixed cooperation with movable block adjusting rod (15).