TW202300292A - Composite nut wrench capable of improving detent stability and detent strength - Google Patents

Abstract

A composite nut wrench comprises a handle and a detent head having a base, a first detent portion, and a second detent portion, the base having a first leaning surface and a second leaning surface, the first detent portion protruded on the first leaning surface and having a plurality of first detent blocks, each first detent block having a first inclined surface, the second detent portion protruded on the second leaning surface and having a second detent block, the second detent block having a second inclined surface, the detent head having different detent forms of the first and second detent portions to improve the convenience of use.

Description

Compound nut wrench

The present invention relates to a nut wrench, in particular to a composite nut wrench suitable for a nut connected to a tool bar.

The existing wrench is mainly used to turn the nut to lock or disassemble the nut. When the existing wrench is used to disassemble the nut connected to the tool bar, since the tool bar can be connected to different types of tools, such as drill bits, milling cutters, etc. , chamfering knife, etc., when the head of the tool connected to the tool bar is too large, it will block the existing wrench of the socket type, so that the existing wrench of the socket type cannot be socketed on the nut, and another type must be replaced Only the existing wrench can dismantle or lock the nut that is connected on the knife bar.

In addition, there are many kinds of nuts, one of which is used to connect to the tool bar, and its outer circumference is provided with a plurality of grooves, and each groove has a groove slope, and the groove slope is from the end surface far away from the nut. The end edge extends obliquely towards the end surface. Due to the influence of the groove slope of the nut, the existing wrench cannot be stably locked in the groove of the nut, so that the existing wrench cannot rotate the nut. In the process of capping, it is easy to separate from the nut, but it needs to be improved.

In view of this, the main purpose of the present invention is to provide a compound nut wrench, which has two different types of locking parts, and is suitable for disassembling or locking nuts with inclined surfaces.

The composite nut wrench of the present invention comprises: a handle; and a catch head, the catch head is formed at one end of the handle, and the catch head includes a central axis; a base, the base is C-shaped around the central axis, and has a first abutment surface and a second abutment surface respectively located on opposite sides; A first locking part, the first locking part protrudes from the first contact surface of the base, and includes a first surrounding portion, the first surrounding portion is C-shaped, and protrudes from the first contact surface of the base, and the first surrounding portion has a first opening; and A plurality of first latching blocks, the first latching blocks protrude from the inner side of the first surrounding part, and are arranged at intervals in a ring, each first latching block has a first inclined surface, and the first inclined surface is located at A side away from the first surrounding portion, and gradually approaching the first surrounding portion from the first abutting surface of the base in a direction away from the first abutting surface; and A second locking part, the second locking part protrudes from the second contact surface of the base, and includes a second surrounding part, the second surrounding part is C-shaped, and protrudes from the second contact surface of the base part, and the second surrounding part has a second opening; and A second locking block, the second locking block protrudes from the inner side of the second surrounding portion and is adjacent to an edge of the second opening, the second locking block has a second inclined surface, and the second inclined surface is located away from One side of the second surrounding portion gradually approaches the second surrounding portion from the second contact surface of the base toward a direction away from the second contact surface.

Utilizing the above-mentioned technical features, the composite nut wrench of the present invention has the following efficiency gains:

1. Since the catch head forms the first catch part and the second catch part of different catch forms, the user can choose to use the first catch part or the second catch part according to the style of the knife connected to the knife bar Remove or lock the nut to improve the convenience of use.

2. Each first locking block has a first slope, and the second locking block has a second slope, which is suitable for nuts with grooves and slopes, so that each first locking block and the second locking block can be lifted. The latching stability and latching strength of the latch block and the groove of the nut.

Please refer to FIG. 1 to FIG. 4 , the preferred embodiment of the compound nut wrench of the present invention includes a handle 10 and a catch head 20 , and the catch head 20 is formed at one end of the handle 10 .

The locking head 20 includes a central axis A, a base portion 21 , a first locking portion 23 , and a second locking portion 25 . The base 21 is C-shaped around the central axis A and is formed at one end of the handle 10. The base 21 has a first abutting surface 211 and a second abutting surface 212 respectively located on opposite sides. The first card The latching portion 23 protrudes from the first abutting surface 211 of the base portion 21 , and the second locking portion 25 protrudes from the second abutting surface 212 of the base portion 21 .

The first locking part 23 includes a first surrounding part 231 and a plurality of first locking blocks 233. The first surrounding part 231 is C-shaped around the central axis A and protrudes from the first part of the base part 21. The contact surface 211, the first surrounding portion 231 has a first opening 232, the arc of the first surrounding portion 231 is greater than 4π/3 and less than 2π, and the first locking blocks 233 are protruded from the first surrounding portion 231 and arranged at intervals in a ring shape, each first locking block 233 has a first slope 234, the first slope 234 is located on the side away from the first surrounding portion 231, and from the first contact of the base portion 21 The surface 211 is inclined away from the first contact surface 211 and approaches the first surrounding portion 231. In this preferred embodiment, the first engaging portion 23 has five first engaging blocks 233 arranged at equal angular intervals. , please refer to FIG. 4 , the angle θ1 between the first inclined surface 234 of each first locking block 233 and the central axis A is 20° to 40°, preferably 30°.

Please refer to FIG. 1 to FIG. 4 , the second locking portion 25 includes a second surrounding portion 251 and a second locking block 253 , the second surrounding portion 251 surrounds the central axis A and protrudes from the base portion 21 The second contact surface 212, the second surrounding portion 251 has a second opening 252, the second opening 252 of the second surrounding portion 251 is larger than the first opening 232 of the first surrounding portion 231, the second surrounding portion 251 The radian is smaller than 10π/9, and the inner diameter of the second surrounding portion 251 is larger than the inner diameter of the first surrounding portion 231 .

The second locking piece 253 protrudes from the inner side of the second surrounding portion 251 and is adjacent to an edge of the second opening 252. The second locking piece 253 has a second inclined surface 254, and the second inclined surface 254 is located away from One side of the second surrounding portion 251, and from the second abutting surface 212 of the base 21 toward the direction away from the second abutting surface 212 is obliquely close to the second surrounding portion 251, please refer to FIG. 3 , the second latch The included angle θ2 between the second slope 254 of the block 253 and the central axis A is 20° to 40°, preferably 30°.

Preferably, the second locking portion 25 includes a support block 255 protruding from the inner side of the second surrounding portion 251 and adjacent to the edge of the second opening 252 away from the second locking block 253 .

Please refer to Fig. 5, Fig. 6, Fig. 9, and Fig. 10, the first engaging portion 23 and the second engaging portion 25 of the engaging head 20 can be used to disassemble a nut 50 connected to the knife rod. The cap 50 has a plurality of annular grooves 52 arranged at intervals, and each groove 52 includes a groove slope 522 , and the groove slope 522 is inclined inwardly from the end edge far away from the end surface of the nut 50 toward the end surface.

Please refer to FIG. 5 to FIG. 8, when using the second locking portion 25, the second locking portion 25 faces the nut 50, and then the second locking piece 253 is inserted into one of the nuts 50. Groove 52, the support block 255 leans against the outer periphery of the nut 50, the second abutment surface 212 of the base 21 leans against the end face of the nut 50, and exerts force on the handle 10 to drive the nut 50 relative The nut 50 is locked or disassembled by rotating the knife rod.

Since the second locking part 25 only has a second locking block 253, when a tool with a larger cutting head is connected to the tool bar, such as a chamfering knife, the second locking part 25 can approach the nut from the side. After 50, the second locking piece 253 is locked in the groove 52 of the nut 50 to improve the convenience of use; since the second locking piece 253 has the second slope 254, the second locking piece 253 The shape and size of the catch piece 253 match the shape and size of each groove 52 of the nut 50, so that the second catch piece 253 can go deep into the corresponding groove 52, increasing the second catch piece 253 and the engaging area of the groove 52 improve the engaging strength.

Preferably, as shown in FIG. 8 , the linear distance D2 between the end surface of the second locking piece 253 and the second abutting surface 212 of the base 21 is greater than or equal to 0.5 times of the groove 52 of the nut 50 The vertical length D1 prevents the depth of engagement between the second engaging block 253 and the groove 52 from being too small, so that it can be firmly engaged in the groove 52 .

Please refer to FIG. 9 to FIG. 12 , when using the first latching portion 23, the first latching portion 23 faces the nut 50, and the first latching portion 23 is sleeved on the nut 50, the The first locking pieces 233 are respectively embedded in the grooves 52 of the nut 50, the first abutting surface 211 of the base 21 is attached to the end surface of the nut 50, and exerts force on the handle 10 to drive the nut. 50 is rotated relative to the tool bar to lock or disassemble the nut 50 .

Since the first locking part 23 has a plurality of first locking blocks 233, when a tool with a small cutting head angle is connected to the tool bar, such as a drill bit, the locking head 20 can be directly and vertically sleeved on the nut 50, And let these first locking blocks 233 be respectively locked in these grooves 52 of the nut 50, increase the locking strength, and allow the user to apply force to rotate the nut 50 easily; because each first locking block 233 has the first inclined surface 234, so that the shape and size of the first locking piece 233 match the shape and size of the groove 52 of the nut 50, so that each first locking piece 233 can go deep into the corresponding The groove 52, and increase the locking area between each first locking piece 233 and the corresponding groove 52, so as to improve the locking strength.

Preferably, as shown in FIG. 12 , the linear distance D3 between the end surface of each first locking block 233 and the first contact surface 211 of the base 21 is greater than or equal to 0.5 times the groove 52 of the nut 50 The vertical length D1, in this preferred embodiment, the linear distance D3 between the end surface of each first locking block 233 and the first contact surface 211 of the base 21 is greater than or equal to 2/3 times of the nut 50 The vertical length D1 of the groove 52 increases the length by which each first locking piece 233 penetrates into the corresponding groove 52 .

Preferably, the inner diameter of the first surrounding portion 231 is 0.1 mm to 0.3 mm larger than the outer diameter of the nut 50, for example, when the outer diameter of the nut 50 is 20 mm, the first surrounding portion The inner diameter of 231 is 20.1 mm to 20.3 mm, so as to reduce the gap between the first surrounding portion 231 and the nut 50 and improve the coverage of the first engaging portion 23 .

Preferably, the width of each first locking piece 233 (the distance between the opposite edges of the first inclined surface 234) is smaller than the width of the groove 52 of the nut 50 by 0.1 mm to 0.15 mm, and each The gap between the first engaging block 233 and each groove 52 .

Utilizing the above-mentioned technical features, the composite nut wrench of the present invention has the following efficiency gains:

1. Since the locking head 20 forms different forms of the first locking part 23 and the second locking part 25, the user can choose to use the first locking part 23 or the second locking part according to the style of the knife connected to the knife bar. The catch portion 25 removes or locks the nut 50 to improve the convenience of use.

2. The shape of each first locking block 233 and the second locking block 253 can be matched with the groove 52 of the nut 50, so that each first locking block 233 and the second locking block 253 can be lifted. The locking stability and locking strength of the groove 52 of the nut 50 .

10: handle 20: click head 21: base 211: First Arrival 212: The second arrival 23: The first locking part 231: The first encircling part 232: first opening 233: The first locking block 234: first bevel 25: The second locking part 251: The second surrounding part 252: second opening 253: The second locking block 254: second slope 255: support block 50: Nut 52: Groove 522: groove slope A: Central axis D1: vertical length D2: Straight line distance D3: Straight line distance θ1: included angle θ2: included angle

Fig. 1 is a perspective view of a preferred embodiment of the present invention. Fig. 2 is another perspective view of a preferred embodiment of the present invention. Fig. 3 is a front sectional view of a preferred embodiment of the present invention. Fig. 4 is a side sectional view of a preferred embodiment of the present invention. FIG. 5 is a schematic three-dimensional appearance view of the use of the second locking part according to the preferred embodiment of the present invention. FIG. 6 is a perspective exploded view illustrating the use of the second engaging portion of the preferred embodiment of the present invention. FIG. 7 is a schematic top sectional view of the second latching portion in use according to a preferred embodiment of the present invention. FIG. 8 is a schematic front cross-sectional view showing the use of the second engaging portion according to the preferred embodiment of the present invention. FIG. 9 is a schematic three-dimensional appearance view of the use of the first locking part according to the preferred embodiment of the present invention. FIG. 10 is a perspective exploded view illustrating the use of the first engaging portion of the preferred embodiment of the present invention. FIG. 11 is a schematic top sectional view of the first engaging portion in use according to a preferred embodiment of the present invention. FIG. 12 is a schematic side sectional view of the first locking part in use according to a preferred embodiment of the present invention.

10: handle

20: click head

21: base

211: First Arrival

23: The first locking part

231: The first encircling part

232: first opening

233: The first locking block

234: first bevel

25: The second locking part

252: second opening

Claims (7)

A compound nut wrench comprising: a handle; and a catch head, the catch head is formed at one end of the handle, and the catch head includes a central axis; a base, the base is C-shaped around the central axis, and has a first abutment surface and a second abutment surface respectively located on opposite sides; A first locking part, the first locking part protrudes from the first contact surface of the base, and includes a first surrounding portion, the first surrounding portion is C-shaped, and protrudes from the first contact surface of the base, and the first surrounding portion has a first opening; and A plurality of first latching blocks, the first latching blocks protrude from the inner side of the first surrounding part, and are arranged at intervals in a ring, each first latching block has a first inclined surface, and the first inclined surface is located away from one side of the first surrounding portion, and gradually approaching the first surrounding portion from the first abutting surface of the base toward a direction away from the first abutting surface; and A second locking part, the second locking part protrudes from the second contact surface of the base, and includes a second surrounding part, the second surrounding part is C-shaped, and protrudes from the second contact surface of the base part, and the second surrounding part has a second opening; and A second locking piece, the second locking piece protrudes from the inner side of the second surrounding portion and is adjacent to an edge of the second opening, the second locking piece has a second inclined surface, and the second inclined surface is located away from One side of the second surrounding portion gradually approaches the second surrounding portion from the second contact surface of the base toward a direction away from the second contact surface. The compound nut wrench according to claim 1, wherein the second opening of the second surrounding portion is larger than the first opening of the first surrounding portion. The composite nut wrench according to claim 2, wherein the second locking part includes a support block, which protrudes from the second contact surface of the base part, is located inside the second surrounding part and is adjacent to the The second opening is away from the edge of the second latching block. The compound nut wrench as described in claim 3, wherein the angle between the first slope of each first locking block and the central axis is 20 degrees to 40 degrees, and the second slope of the second locking block and The included angle between the central axes is 20° to 40°. The composite nut wrench according to claim 3, wherein the arc of the first surrounding portion is greater than 4π/3 and less than 2π, and the arc of the second surrounding portion is less than 10π/9. The compound nut wrench according to claim 3, wherein the inner diameter of the second surrounding part is larger than the inner diameter of the first surrounding part. The composite nut wrench according to any one of Claims 1 to 6, wherein the first locking part includes five first locking blocks arranged at angular intervals.

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