CN113319769A - Combined type nut spanner - Google Patents
Combined type nut spanner Download PDFInfo
- Publication number
- CN113319769A CN113319769A CN202110744191.2A CN202110744191A CN113319769A CN 113319769 A CN113319769 A CN 113319769A CN 202110744191 A CN202110744191 A CN 202110744191A CN 113319769 A CN113319769 A CN 113319769A
- Authority
- CN
- China
- Prior art keywords
- clamping
- surrounding
- abutting surface
- block
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/58—Jaw attachments
Abstract
The invention discloses a composite nut wrench, which comprises a grab handle and a clamping head, wherein the clamping head comprises a base part, a first clamping part and a second clamping part, the base part is provided with a first abutting surface and a second abutting surface, the first clamping part is convexly arranged on the first abutting surface and is provided with a plurality of first clamping blocks, the plurality of first clamping blocks are provided with first inclined surfaces, the second clamping part is convexly arranged on the second abutting surface and is provided with a second clamping block, the second clamping block is provided with a second inclined surface, and the clamping head is provided with the first clamping part and the second clamping part in different clamping forms, so that the use convenience is improved.
Description
Technical Field
The invention relates to the field of nut wrenches, in particular to a composite nut wrench suitable for nuts connected to a cutter bar.
Background
When the existing wrench is used for disassembling the nut connected to the tool bar, since the tool bar can be connected to different types of tools, such as a drill, a milling cutter, a chamfering cutter, etc., and when the tool bit of the tool connected to the tool bar is too large, the existing wrench in a sleeving connection mode is blocked, so that the existing wrench in a sleeving connection mode cannot be sleeved on the nut, and the nut connected to the tool bar can be disassembled or locked only by replacing the existing wrench in another type.
In addition, the nut is of various types, wherein the existing nut for connecting the cutter bar is concavely provided with a plurality of grooves at the periphery, each groove is provided with a groove inclined surface, the groove inclined surfaces face the end surface from the end edge far away from the end surface of the nut and extend inwards in an inclined manner, and due to the influence of the groove inclined surfaces of the nut, the existing wrench cannot be stably clamped in the grooves of the nut, so that the existing wrench is easily separated from the nut in the process of rotating the nut, and the problem is still to be improved.
In view of the above, the present inventors have made extensive studies on the above-mentioned drawbacks of the prior art, and have made this invention.
Disclosure of Invention
The present invention is directed to a composite nut wrench, which has two different types of engaging portions and is suitable for disassembling or locking a nut having a groove slope.
In order to achieve the above purpose, the solution of the invention is:
a combined nut wrench comprises a grab handle and a clamping head, wherein the clamping head is formed at one end of the grab handle; the clamping head comprises a central shaft, a base part, a first clamping part and a second clamping part, wherein the base part is C-shaped around the central shaft and is provided with a first abutting surface and a second abutting surface which are respectively positioned on the opposite sides; the first clamping part is arranged on the first abutting surface of the base part in a protruding mode, and the second clamping part is arranged on the second abutting surface of the base part in a protruding mode;
the first clamping part comprises a first surrounding part and a plurality of first clamping blocks, the first surrounding part is C-shaped and is convexly arranged on the first abutting surface of the base part, and the first surrounding part is provided with a first opening; the plurality of first clamping and pulling blocks are convexly arranged on the inner side of the first surrounding part and are arranged at intervals in a ring shape, the first clamping and pulling blocks are provided with first inclined planes, the first inclined planes are positioned on one side far away from the first surrounding part, and the first inclined planes gradually approach the first surrounding part from the first abutting surface of the base part towards the direction far away from the first abutting surface;
the second clamping part comprises a second surrounding part and a second clamping block, the second surrounding part is C-shaped and is convexly arranged on the second abutting surface of the base part, the second surrounding part is provided with a second opening, the second clamping block is convexly arranged on the inner side of the second surrounding part and is adjacent to the edge of the second opening, the second clamping block is provided with a second inclined surface, the second inclined surface is positioned on one side far away from the second surrounding part, and the second inclined surface gradually approaches the second surrounding part from the second abutting surface of the base part towards the direction far away from the second abutting surface.
Further, the second opening of the second surrounding portion is larger than the first opening of the first surrounding portion.
Further, the second locking portion includes a supporting block, the supporting block is disposed on the second abutting surface of the base portion in a protruding manner, the supporting block is located on the inner side of the second surrounding portion, and the supporting block is close to the second opening and is far away from the edge of the second locking block.
Furthermore, the included angle between the first inclined plane of the first clamping block blocks and the central shaft is 20-40 degrees, and the included angle between the second inclined plane of the second clamping block blocks and the central shaft is 20-40 degrees.
Further, the radian of the first surrounding part is larger than 4 pi/3 and smaller than 2 pi, and the radian of the second surrounding part is smaller than 10 pi/9.
Further, the inner diameter of the second surrounding portion is larger than that of the first surrounding portion.
Further, the first clamping part comprises five first clamping blocks which are arranged at intervals at an angle.
After adopting the structure, the composite nut wrench provided by the invention at least has the following beneficial effects:
first, because the clamping head forms the first clamping part and the second clamping part of different clamping forms, the user can choose to use the first clamping part or the second clamping part to disassemble or lock the nut according to the type of the cutter connected on the cutter bar, thereby improving the convenience of use.
And each first clamping block is provided with a first inclined plane, and each second clamping block is provided with a second inclined plane, so that the clamping fixture is suitable for the screw cap with the groove inclined plane on the groove, and the clamping stability and the clamping strength of each first clamping block, each second clamping block and the groove of the screw cap can be improved.
Compared with the prior art, the combined nut wrench is arranged, so that the wrench can be selectively applied to different nuts, and the working efficiency and the operation convenience are improved.
Drawings
Fig. 1 is a perspective view of a preferred embodiment of the present invention.
Fig. 2 is another perspective view of the preferred embodiment of the present invention.
FIG. 3 is a front sectional view of the preferred embodiment of the present invention.
FIG. 4 is a side sectional view of the preferred embodiment of the present invention.
Fig. 5 is a schematic perspective external view of the second detent portion according to the preferred embodiment of the invention.
Fig. 6 is a schematic perspective exploded view of the second detent according to the preferred embodiment of the invention.
Fig. 7 is a schematic top sectional view of the second detent portion according to the preferred embodiment of the invention.
Fig. 8 is a schematic front sectional view of the second detent portion according to the preferred embodiment of the invention.
Fig. 9 is a schematic perspective external view of the first engaging portion according to the preferred embodiment of the present invention.
Fig. 10 is a schematic perspective exploded view of the first detent portion according to the preferred embodiment of the invention.
Fig. 11 is a schematic top sectional view of the first detent portion according to the preferred embodiment of the invention.
Fig. 12 is a schematic side sectional view of the first detent portion according to the preferred embodiment of the invention.
In the figure:
10: handle
20, a clamping head
21 base part
211 a first butting face
212 second butting face
23 a first engaging part
231 first surrounding part
232 first opening
233 a first clamping block
234 first inclined plane
25 the second clamping part
251 the second surrounding part
252 second opening
253 second engaging block
254 second inclined plane
255 supporting block
50: nut
52 groove
522 groove slope
A is the central axis
Vertical length D1
D2 straight-line distance
D3 straight-line distance
Angle theta 1
Angle theta 2
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
Referring to fig. 1 to 4, a preferred embodiment of the composite nut wrench of the present invention includes a handle 10 and a locking head 20, wherein the locking head 20 is formed at one end of the handle 10.
The locking head 20 includes a central axis a, a base 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 at opposite sides, the first clamping portion 23 is convexly disposed on the first abutting surface 211 of the base 21, and the second clamping portion 25 is convexly disposed on the second abutting surface 212 of the base 21.
The first engaging portion 23 includes a first surrounding portion 231 and a plurality of first engaging blocks 233, the first surrounding portion 231 is C-shaped around the central axis a and is protruded on the first abutting surface 211 of the base portion 21, the first surrounding portion 231 has a first opening 232, the radian of the first surrounding portion 231 is larger than 4 pi/3 and smaller than 2 pi, the plurality of first engaging blocks 233 are protruded on the inner side of the first surrounding portion 231 and are annularly arranged at intervals, each first engaging block 233 has a first inclined surface 234, the first inclined surface 234 is located on one side far from the first surrounding portion 231 and is inclined from the first abutting surface 211 of the base portion 21 to approach the first surrounding portion 231 in a direction far from the first abutting surface 211, in the preferred embodiment, the first engaging portion 23 has 5 first engaging blocks 233 arranged at equal angular intervals, referring to fig. 4, an included angle θ 1 between the first inclined surface 234 of each first detent block 233 and the central axis a is 20 degrees to 40 degrees, preferably 30 degrees.
Referring to fig. 1 to 4, the second latching portion 25 includes a second surrounding portion 251 and a second latching block 253, the second surrounding portion 251 surrounds the central axis a and is disposed on the second abutting surface 212 of the base portion 21 in a protruding manner, 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 radian of the second surrounding portion 251 is smaller than 10 pi/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 detent block 253 protrudes from the inner side of the second surrounding portion 251 and is adjacent to the edge of the second opening 252, the second detent block 253 has a second inclined surface 254, the second inclined surface 254 is located at a side away from the second surrounding portion 251, and is inclined from the second abutting surface 212 of the base 21 toward a direction away from the second abutting surface 212 to approach the second surrounding portion 251, please refer to fig. 3, an included angle θ 2 between the second inclined surface 254 of the second detent block 253 and the central axis a is 20 degrees to 40 degrees, and preferably 30 degrees.
Preferably, the second latching portion 25 includes a supporting block 255, and the supporting block 255 is protruded from the inner side of the second surrounding portion 251 and is adjacent to the edge of the second opening 252 away from the second latching block 253.
Referring to fig. 5, 6, 9 and 10, the first locking portion 23 and the second locking portion 25 of the locking head 20 can be used to disassemble a nut 50 connected to a tool holder, the nut 50 has a plurality of grooves 52 arranged at intervals in a ring shape, each groove 52 includes a groove slope 522, and the groove slope 522 is inclined inward from an end edge far from an end face of the nut 52 toward the end face.
Referring to fig. 5 to 8, when the second locking portion 25 is used, the second locking portion 25 faces the nut 50, the second locking block 253 extends into one of the grooves 52 of the nut 50, the supporting block 255 abuts against the periphery of the nut 50, the second abutting surface 212 of the base 21 abuts against the end surface of the nut 50, and the handle 10 is applied with force to drive the nut 50 to rotate relative to the tool holder, so that the nut 50 can be locked or disassembled.
Because the second clamping part 25 only has one second clamping block 253, when a cutter with a larger cutting head is connected to the cutter bar, such as a chamfer cutter, the second clamping part 25 can be laterally close to the nut 50, and then the second clamping block 253 is clamped in the groove 52 of the nut 50, so that the use convenience is improved; since the second latch 253 has the second inclined surface 254, the shape and size of the second latch 253 are matched with the shape and size of each groove 52 of the nut 50, so that the second latch 253 can enter into the corresponding groove 52, the latching area of the second latch 253 and the groove 52 is increased, and the latching strength is improved.
Preferably, as shown in fig. 8, a linear distance D2 between the end surface of the second engaging block 253 and the second abutting surface 212 of the base 21 is greater than or equal to 0.5 times the vertical length D1 of the groove 52 of the nut 50, so as to prevent the engaging depth of the second engaging block 253 and the groove 52 from being too small, and thus the second engaging block 253 can be engaged with the groove 52 more firmly.
Referring to fig. 9 to 12, when the first locking portion 23 is used, the first locking portion 23 faces the nut 50, and the first locking portion 23 is sleeved on the nut 50, the first locking blocks 233 are respectively embedded in the grooves 52 of the nut 50, the first abutting surface 211 of the base 21 abuts against an end surface of the nut 50, and a force is applied to the handle 10 to drive the nut 50 to rotate relative to the tool holder, so as to lock or disassemble the nut 50.
Because the first locking portion 23 has a plurality of first locking blocks 233, when the cutter bar is connected to a cutter with a small cutting head angle, such as a drill, the locking head 20 can be directly and vertically sleeved on the nut 50, and the first locking blocks 233 are respectively locked in the grooves 52 of the nut 50, so as to increase the locking strength, and thus, a user can easily apply force to rotate the nut 50; since the first engaging blocks 233 have the first inclined surfaces 234, the shape and size of the first engaging blocks 233 are matched with the shape and size of the groove 52 of the nut 50, so that each first engaging block 233 can penetrate into the corresponding groove 52, the engaging area of each first engaging block 233 and the corresponding groove 52 is increased, and the engaging strength is improved.
Preferably, as shown in fig. 12, a linear distance D3 between the end surface of each first locking block 233 and the first abutting surface 211 of the base 21 is greater than or equal to 0.5 times of the vertical length D1 of the groove 52 of the nut 50, and in the preferred embodiment, a linear distance D3 between the end surface of each first locking block 233 and the first abutting surface 211 of the base 21 is greater than or equal to 2/3 times of the vertical length D1 of the groove 52 of the nut 50, so as to increase the depth of each locking block 233 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 inner diameter of the first surrounding portion 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 locking portion 23.
Preferably, the width of each first detent block 233 (the distance between two 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, so as to reduce the gap between each first detent block 233 and each groove 52.
By utilizing the technical characteristics, the composite nut wrench has the following effect gains:
first, because the clamping head forms the first clamping part and the second clamping part of different clamping forms, the user can choose to use the first clamping part or the second clamping part to disassemble or lock the nut according to the type of the cutter connected on the cutter bar, thereby improving the convenience of use.
And each first clamping block is provided with a first inclined plane, and each second clamping block is provided with a second inclined plane, so that the clamping fixture is suitable for the screw cap with the groove inclined plane on the groove, and the clamping stability and the clamping strength of each first clamping block, each second clamping block and the groove of the screw cap can be improved.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (7)
1. A combined nut wrench is characterized by comprising a grab handle and a clamping head, wherein the clamping head is formed at one end of the grab handle; the clamping head comprises a central shaft, a base part, a first clamping part and a second clamping part, wherein the base part is C-shaped around the central shaft and is provided with a first abutting surface and a second abutting surface which are respectively positioned on the opposite sides; the first clamping part is arranged on the first abutting surface of the base part in a protruding mode, and the second clamping part is arranged on the second abutting surface of the base part in a protruding mode;
the first clamping part comprises a first surrounding part and a plurality of first clamping blocks, the first surrounding part is C-shaped and is convexly arranged on the first abutting surface of the base part, and the first surrounding part is provided with a first opening; the plurality of first clamping and pulling blocks are convexly arranged on the inner side of the first surrounding part and are arranged at intervals in a ring shape, the first clamping and pulling blocks are provided with first inclined planes, the first inclined planes are positioned on one side far away from the first surrounding part, and the first inclined planes gradually approach the first surrounding part from the first abutting surface of the base part towards the direction far away from the first abutting surface;
the second clamping part comprises a second surrounding part and a second clamping block, the second surrounding part is C-shaped and is convexly arranged on the second abutting surface of the base part, the second surrounding part is provided with a second opening, the second clamping block is convexly arranged on the inner side of the second surrounding part and is adjacent to the edge of the second opening, the second clamping block is provided with a second inclined surface, the second inclined surface is positioned on one side far away from the second surrounding part, and the second inclined surface gradually approaches the second surrounding part from the second abutting surface of the base part towards the direction far away from the second abutting surface.
2. The composite nut runner of claim 1, wherein the second opening of said second surrounding portion is larger than the first opening of said first surrounding portion.
3. The composite nut runner as defined in claim 2, wherein said second engaging portion includes a supporting block protruding from said second abutting surface of said base portion, said supporting block is located inside said second surrounding portion, and said supporting block is located near said second opening and away from an edge of said second engaging block.
4. The composite nut wrench as claimed in claim 3, wherein the angle between the first inclined surface of the first locking block and the central axis is 20 to 40 degrees, and the angle between the second inclined surface of the second locking block and the central axis is 20 to 40 degrees.
5. The compound nut runner as defined in claim 3, wherein said first surrounding portion has a curvature greater than 4 pi/3 and less than 2 pi, and said second surrounding portion has a curvature less than 10 pi/9.
6. The composite nut runner as defined in claim 3, wherein said second surrounding portion has an inner diameter greater than an inner diameter of said first surrounding portion.
7. The composite nut runner as defined in any one of claims 1 to 6, wherein said first engaging portion comprises five angularly spaced first engaging blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744191.2A CN113319769A (en) | 2021-07-01 | 2021-07-01 | Combined type nut spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744191.2A CN113319769A (en) | 2021-07-01 | 2021-07-01 | Combined type nut spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113319769A true CN113319769A (en) | 2021-08-31 |
Family
ID=77425354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110744191.2A Pending CN113319769A (en) | 2021-07-01 | 2021-07-01 | Combined type nut spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113319769A (en) |
-
2021
- 2021-07-01 CN CN202110744191.2A patent/CN113319769A/en active Pending
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