CN214980649U - A screw up specialized tool fast for fastening cylindrical screw rod - Google Patents
A screw up specialized tool fast for fastening cylindrical screw rod Download PDFInfo
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- CN214980649U CN214980649U CN202120347591.5U CN202120347591U CN214980649U CN 214980649 U CN214980649 U CN 214980649U CN 202120347591 U CN202120347591 U CN 202120347591U CN 214980649 U CN214980649 U CN 214980649U
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Abstract
The utility model relates to the technical field of auxiliary tools, in particular to a special tool for quickly screwing up a fastening cylindrical screw rod, which comprises a sleeve body, a plurality of pin grooves which are arranged at the inner hole part of the sleeve body and distributed along the circumferential direction, and cylindrical pins arranged in the pin grooves, wherein each pin groove comprises a locking groove bottom and two limiting groove sides, the cylindrical pin is movably arranged between the groove bottom and the two groove sides, and one side of the cylindrical pin, which is far away from the groove bottom, is exposed in the inner hole of the sleeve body; the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually reduced from one side of the groove bottom to the other side of the groove bottom in the circumferential direction, so that a locking surface of the groove bottom is formed when the cylindrical screw is clamped by the cylindrical pin. The utility model discloses a quick tightening of cylindrical screw to the degree of automation of the operation is screwed up to cylindrical screw has been improved.
Description
Technical Field
The utility model relates to an appurtenance technical field, concretely relates to a specialized tool screws up fast for fastening cylindrical screw rod.
Background
Both ends of a certain dishwasher handle (as shown in fig. 9) are provided with special cylindrical screws integrally formed by connecting a screw and a cylindrical head provided at one end of the screw, which are required to connect a screw portion thereof with the dishwasher handle at a set torque at the time of assembly. Because the head is a cylindrical head, a special tightening tool is lacked, and a skilled operator is mostly adopted to clamp and tighten the cylindrical screw rod in a pliers-type manner in the past. It has the problems that:
firstly, the tightening torque of cylindrical screw is influenced by the skill of an operator, the tightening torque is difficult to control, the inconsistent situation of the tightening torque of the cylindrical screw on the handle of the same batch of dish washing machines can occur, and the overall assembly quality of the dish washing machines is influenced.
Secondly, because of the manual tightening, the operation efficiency is very low, and the automatic operation can not be realized on the production line or the production line of mass production.
In addition, in the assembly industry, there are also cases where it is necessary to tighten the cylindrical head of a part such as the above-described cylindrical screw.
Therefore, there is a need to improve the tightening of the cylindrical screw in the prior art to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a screw up specialized tool fast for fastening cylindrical screw rod aims at realizing screwing up fast of cylindrical screw rod to improve the degree of automation of the operation of screwing up cylindrical screw rod. The specific technical scheme is as follows:
a special tool for quickly screwing a cylindrical screw comprises a sleeve body, a plurality of pin grooves which are arranged at the inner hole of the sleeve body and distributed along the circumferential direction, and cylindrical pins arranged in the pin grooves, wherein each pin groove comprises a groove bottom for locking and two groove sides for limiting, the cylindrical pins are movably arranged between the groove bottom and the two groove sides, and one side of each cylindrical pin, which is far away from the groove bottom, is exposed in the inner hole of the sleeve body; the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually reduced from one side of the groove bottom to the other side of the groove bottom in the circumferential direction, so that a locking surface of the groove bottom is formed when the cylindrical screw is clamped by the cylindrical pin.
Preferably, the locking surface is set to a certain tangential angle, so that a locking angle of the cylindrical pin can be formed between the groove bottom and the excircle of the cylindrical head of the cylindrical screw.
The locking angle is an included angle between two tangential planes at the contact positions of the cylindrical pin and the groove bottom and the excircle of the cylindrical head of the cylindrical screw rod.
Preferably, the locking angle is 3-12 degrees.
When the cylindrical pin is contacted with one side position, relatively far away from the central axis, on the bottom of the groove, the cylindrical pin and the cylindrical screw rod are in clearance fit; when the cylindrical pin is contacted with one side position on the groove bottom, which is relatively close to the central axis, the cylindrical pin and the cylindrical screw rod are in a clamping state.
During the use, install specialized tool on the output shaft of the electric screwdriver that has torque control, when needing to screw up the operation, will install the cover barrel casing on electric screwdriver on cylindrical screw on the cylinder head excircle, then open electric screwdriver and drive the cover barrel and rotate, the cylindric lock on the rotating process cover barrel moves along circumference for the tank bottom in pin groove, because the tank bottom has the locking face that reduces gradually apart from the central axis, consequently, can make cylindric lock and cylindrical screw's cylinder head excircle contact and locking, thereby it rotates together until electric screwdriver reaches the settlement moment of torsion to drive cylindrical screw, the fixed moment of torsion of cylindrical screw has been realized from this and has been screwed up. After the screw is screwed down, the electric screwdriver is rotated reversely to unlock the screw, and the sleeve body and the cylindrical screw can be smoothly loosened.
The electric screwdriver connected with the special tool can be directly operated manually, and can also be arranged on an automatic assembly line (or assembly line) to realize automatic operation.
In order to quickly and smoothly sleeve the sleeve body on the special tool on the excircle of the cylindrical head of the cylindrical screw rod during operation, the electric screwdriver is started to idle for a plurality of circles in the opposite direction of the tightening direction before the sleeve body is sleeved on the excircle of the cylindrical head of the cylindrical screw rod, so that the cylindrical pin on the sleeve body is in an unlocked loose state (the cylindrical pin is positioned on one side of the groove bottom relatively far away from the central axis), and a larger gap is formed between the cylindrical pin and the excircle of the cylindrical head of the cylindrical screw rod when the sleeve body is sleeved on the excircle of the cylindrical head of the cylindrical screw rod.
As one of the preferred schemes of the shape of the middle groove bottom of the utility model, the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually reduced from one side of the groove bottom to the other side of the groove bottom in the clockwise direction of the circumference.
As a second preferred embodiment of the shape of the middle groove bottom of the present invention, the distance from the bottom surface of the groove bottom to the central axis of the sleeve body decreases gradually from one side of the groove bottom to the other side of the groove bottom in the counterclockwise direction of the circumference.
The groove bottom shapes of the two different preferred schemes are respectively suitable for tightening the right thread or loosening the left thread, and tightening the left thread or loosening the right thread.
As the utility model discloses well cover barrel's preferred scheme, cover barrel includes the outer sleeve and installs interior snare in the outer sleeve hole, the one end of interior snare has the outer flange, the spacing groove of a plurality of quantities is seted up along the circumferencial direction to the other end of interior snare, the hole pore wall of outer sleeve forms the tank bottom, two sides of spacing groove form two groove sides.
Preferably, the front end of the inner hole of the outer sleeve is provided with an inner step for axially blocking one end of the cylindrical pin, the rear end of the inner hole of the outer sleeve is provided with a retainer groove, and a C-shaped retainer ring for axially blocking the outer flange on the inner ring sleeve is arranged in the retainer groove.
In the utility model, the rear end of the sleeve body is connected with a tool handle.
The tool handle is connected to the rear end of an outer sleeve of the sleeve body, a threaded hole is formed in the rear end of the outer sleeve, and the tool handle is connected with the outer sleeve in a threaded fit mode and fixed through spot welding.
The utility model discloses in, the afterbody of tool handle is provided with the quick change structure that is connected with electric screwdriver's output shaft.
Preferably, the quick-change structure comprises a square body arranged at the tail part of the tool handle and an annular groove.
Preferably, the number of the cylindrical pins is 6-16 and the cylindrical pins are evenly distributed along the circumference square.
More preferably, the number of the cylindrical pins is 10, and the cylindrical pins are uniformly arranged along the circumference.
The utility model discloses in, its excircle of outer sleeve of the cover barrel body can be cylindrical excircle, also can be the hexagon excircle.
It should be added that the utility model discloses a specialized tool not only is applicable to the dish washer and screws up fast of the cylindrical screw rod on hand, also is applicable to other fast screws up that relate to any fastening type part that has the cylinder head characteristic completely. For example, to hexagon socket head cap screw, take the socket head cap screw of open slot or cross recess, when these screws lead to its hexagon, open slot (or cross recess) impaired and when unable the use because of reasons such as corrosion, just can adopt the utility model discloses a specialized tool dismantles.
The utility model has the advantages that:
firstly, the special tool for quickly screwing the cylindrical screw rod of the utility model sets the bottom surface of the groove bottom on the pin groove to be away from the central axis of the sleeve body, and the distance from one side of the groove bottom to the other side of the groove bottom is gradually reduced in the circumferential direction, so that a locking surface of the groove bottom is formed; the fixed-torque tightening device is matched with an electric screwdriver with torque control, and can realize fixed-torque tightening of a cylindrical screw, so that the defect that manual tightening torque is inconsistent in size is overcome.
Second, the utility model discloses a screw up specialized tool fast for fastening cylindrical screw rod has great clearance between its cylindric lock and cylindrical screw rod's the cylinder head excircle when the special tool goes up the cover barrel and embolias cylindrical screw rod's cylinder head excircle to can realize cylindrical screw rod's the operation of screwing up fast, improve the efficiency of assembly from this.
Drawings
Fig. 1 is a schematic structural view of a special quick tightening tool for fastening a cylindrical screw according to the present invention;
FIG. 2 is a schematic view of the special tool of FIG. 1 mounted to a power screwdriver;
FIGS. 3 and 4 are schematic views of the sleeve body portion of FIG. 1;
FIG. 5 is a schematic view of the outer sleeve of the sleeve body;
FIG. 6 is a schematic view of the connection of the inner ring sleeve of the sleeve body with the cylindrical pin;
FIG. 7 is a schematic view of the outer sleeve of the sleeve body assembled with the inner sleeve;
FIG. 8 is a schematic view of the sleeve of FIG. 7 with a cylindrical pin installed therein;
fig. 9 is a schematic view of the structure of a dishwasher handle.
In the figure: 1. the quick-change sleeve comprises a sleeve body, 2, a pin groove, 3, a cylindrical pin, 4, a groove bottom, 5, a groove side, 6, an inner hole of the sleeve body, 7, an electric screwdriver, 8, a cylindrical screw, 9, an outer sleeve, 10, an inner ring sleeve, 11, a limiting groove, 12, an inner step, 13, a C-shaped retainer ring, 14, a tool handle, 15, a quick-change structure, 16, a square body, 17, an annular groove, 18, a dish-washing machine handle, 19, a threaded hole, 20 and an outer flange.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 to 9 show an embodiment of a special tool for quick tightening of a fastening cylindrical screw according to the present invention, which includes a sleeve body 1, a plurality of pin grooves 2 disposed in an inner hole of the sleeve body 1 and distributed along a circumferential direction, and cylindrical pins 3 disposed in the pin grooves 2, wherein each pin groove 2 includes a locking groove bottom 4 and two limiting groove sides 5, the cylindrical pin 3 is movably disposed between the one groove bottom 4 and the two groove sides 5, and one side of the cylindrical pin 3 away from the groove bottom 4 is exposed in the inner hole of the sleeve body 1; the distance of the bottom surface of the groove bottom 4 from the central axis of the sleeve body 1 decreases in the circumferential direction from one side of the groove bottom 4 to the other side of the groove bottom 4, so that a locking surface of the groove bottom is formed when the cylindrical pin 3 clamps the cylindrical screw 8.
Preferably, a locking angle for locking the cylindrical pin 3 can be formed between the groove bottom 4 and the excircle of the cylindrical head of the cylindrical screw 8 by setting the locking surface to a certain tangential angle.
The locking angle is an included angle between two tangential planes at the contact positions of the cylindrical pin 3 and the groove bottom and the excircle of the cylindrical head of the cylindrical screw 8.
Preferably, the locking angle is 3-12 degrees.
When the cylindrical pin 3 is contacted with one side position, relatively far away from the central axis, of the groove bottom 4, the cylindrical pin 3 and the cylindrical screw 8 are in clearance fit; when the cylindrical pin 3 is contacted with one side position on the groove bottom 4 relatively close to the central axis, the cylindrical pin 3 and the cylindrical screw 8 are in a clamping state.
During the use, install specialized tool on the output shaft of the electric screwdriver 7 that has torque control, when needing to screw up the operation, will install the cover barrel 1 cover on the electric screwdriver 7 on the excircle of cylindrical screw 8, then open electric screwdriver 7 and drive the cover barrel 1 and rotate, cylindric lock 3 on the barrel 1 for the tank bottom 4 of pin groove 2 along circumference in the rotation process removes, because tank bottom 4 has the locking face that reduces gradually apart from the central axis, consequently can make cylindric lock 3 and cylindrical head excircle of cylindrical screw 8 contact and lock, thereby drive cylindrical screw 8 and rotate together until electric screwdriver 7 reaches the settlement moment of torsion, the definite moment of torsion that has realized cylindrical screw 8 screws up from this. After the screw is screwed down, the electric screwdriver 7 rotates reversely to unlock, and the sleeve body 1 and the cylindrical screw 8 can be smoothly loosened.
The electric screwdriver 7 connected with the special tool can be directly operated manually or can be arranged on an automatic assembly line (or assembly line) to realize automatic operation.
In order to quickly and smoothly sleeve the sleeve body 1 on the special tool on the excircle of the cylindrical head of the cylindrical screw 8 during operation, before the sleeve body 1 is sleeved on the excircle of the cylindrical head of the cylindrical screw 8, the electric screwdriver 7 is started to idle for a plurality of circles in the opposite direction of the screwing direction, so that the cylindrical pin 3 on the sleeve body 1 is in an unlocked loose state (the cylindrical pin 3 is positioned on the side of the groove bottom relatively far away from the central axis), and a larger gap is formed between the cylindrical pin 3 and the excircle of the cylindrical head of the cylindrical screw 8 when the sleeve body 1 is sleeved on the excircle of the cylindrical head of the cylindrical screw 8.
As one of the preferable configurations of the groove bottom shape in the present embodiment, the distance from the bottom surface of the groove bottom 4 to the central axis of the sleeve body 1 gradually decreases from one side of the groove bottom 4 to the other side of the groove bottom 4 in the clockwise direction of the circumference.
As a second preferable mode of the shape of the groove bottom in this embodiment, the distance from the bottom surface of the groove bottom 4 to the central axis of the sleeve body 1 gradually decreases from one side of the groove bottom 4 to the other side of the groove bottom 4 in the counterclockwise direction of the circumference.
The shapes of the groove bottoms 4 of the two different preferred schemes are respectively suitable for tightening the right thread or loosening the left thread, and tightening the left thread or loosening the right thread.
As a preferable scheme of the sleeve body in this embodiment, the sleeve body 1 includes an outer sleeve 9 and an inner ring 10 installed in an inner hole of the outer sleeve 9, one end of the inner ring 10 has an outer flange 20, the other end of the inner ring 10 is provided with a plurality of limiting grooves 11 along a circumferential direction, a hole wall of the inner hole of the outer sleeve 9 forms the groove bottom 4, and two side surfaces of the limiting grooves 11 form the two groove sides 5.
Preferably, the front end of the inner hole of the outer sleeve 9 is provided with an inner step 12 for axially blocking one end of the cylindrical pin 3, the rear end of the inner hole of the outer sleeve 9 is provided with a retainer groove, and a C-shaped retainer ring 13 for axially blocking the outer flange 20 on the inner ring sleeve 10 is installed in the retainer groove.
In this embodiment, a tool handle 14 is further connected to the rear end of the sleeve body 1.
The tool handle 14 is connected to the rear end of the outer sleeve 9 of the sleeve body 1, a threaded hole is formed in the rear end of the outer sleeve 1, and the tool handle 14 is connected with the outer sleeve 1 in a threaded fit mode and fixed through spot welding.
In this embodiment, the rear portion of the tool handle 14 is provided with a quick-change structure 15 connected with the output shaft of the electric screwdriver 7.
Preferably, the quick-change structure 15 includes a square body 16 and an annular groove 17 disposed at the rear of the tool shank 14.
Preferably, the number of the cylindrical pins 3 is 6-16 and the cylindrical pins are uniformly arranged along the circumference square.
More preferably, the number of the cylindrical pins 3 is 10 and the cylindrical pins are evenly arranged along the circumference.
In this embodiment, the outer circumference of the outer sleeve 9 of the sleeve body 1 may be a cylindrical outer circumference or a hexagonal outer circumference.
It should be added that the special tool of the present embodiment is not only suitable for fast tightening of a cylindrical screw on a handle of a dishwasher, but also suitable for fast tightening of any fastening type part with a cylindrical head. For example, to hexagon socket head cap screw, take the socket head cap screw of open slot or cross recess, when these screws lead to its hexagon, open slot (or cross recess) impaired and when unable the use because of reasons such as corrosion, just can adopt the utility model discloses a specialized tool dismantles.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A special tool for quickly screwing a cylindrical screw is characterized by comprising a sleeve body, a plurality of pin grooves which are arranged at the inner hole of the sleeve body and distributed along the circumferential direction, and cylindrical pins arranged in the pin grooves, wherein each pin groove comprises a groove bottom for locking and two groove sides for limiting, the cylindrical pins are movably arranged between the groove bottom and the two groove sides, and one side of each cylindrical pin, which is far away from the groove bottom, is exposed in the inner hole of the sleeve body; the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually reduced from one side of the groove bottom to the other side of the groove bottom in the circumferential direction, so that a locking surface of the groove bottom is formed when the cylindrical screw is clamped by the cylindrical pin.
2. The special tool for quick tightening of fastening cylindrical screw according to claim 1, wherein the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually decreased from one side of the groove bottom to the other side of the groove bottom in the clockwise direction of the circumference.
3. The special tool for quick tightening of fastening cylindrical screw according to claim 1, wherein the distance from the bottom surface of the groove bottom to the central axis of the sleeve body is gradually decreased from one side of the groove bottom to the other side of the groove bottom in the counterclockwise direction of the circumference.
4. The special tool for fastening the cylindrical screw rod of claim 1, wherein the sleeve body comprises an outer sleeve and an inner ring sleeve arranged in an inner hole of the outer sleeve, an outer flange is arranged at one end of the inner ring sleeve, a plurality of limiting grooves are formed in the other end of the inner ring sleeve along the circumferential direction, the inner hole wall of the outer sleeve forms the groove bottom, and two side faces of the limiting grooves form the two groove sides.
5. The special tool for quickly tightening the cylindrical screw according to claim 4, wherein the front end of the inner hole of the outer sleeve is provided with an inner step for axially blocking one end of the cylindrical pin, the rear end of the inner hole of the outer sleeve is provided with a retaining ring groove, and a C-shaped retaining ring for axially blocking an outer flange on the inner sleeve is installed in the retaining ring groove.
6. A special tool for quick tightening of fastening cylindrical screws as claimed in claim 3, wherein a tool shank is further attached to the rear end of the sleeve body.
7. A special tool for tightening a cylindrical screw according to claim 6, wherein the tool shank is connected to the sleeve body at a rear end of an outer sleeve, the rear end of the outer sleeve is provided with a threaded hole, and the tool shank is connected to the outer sleeve in a thread fit manner and fixed by spot welding.
8. The special tool for quickly tightening a cylindrical screw according to claim 6, wherein the tail part of the tool handle is provided with a quick-change structure connected with the output shaft of the electric screwdriver.
9. A special tool for tightening a cylindrical screw according to claim 8, wherein the quick-change structure comprises a square body and an annular groove provided at the rear of the tool shank.
10. A special tool for the quick tightening of fastening cylindrical screws according to claim 1, characterized in that the number of said cylindrical pins is 10 and is uniformly arranged along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120347591.5U CN214980649U (en) | 2021-02-07 | 2021-02-07 | A screw up specialized tool fast for fastening cylindrical screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120347591.5U CN214980649U (en) | 2021-02-07 | 2021-02-07 | A screw up specialized tool fast for fastening cylindrical screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214980649U true CN214980649U (en) | 2021-12-03 |
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ID=79146202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120347591.5U Active CN214980649U (en) | 2021-02-07 | 2021-02-07 | A screw up specialized tool fast for fastening cylindrical screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214980649U (en) |
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2021
- 2021-02-07 CN CN202120347591.5U patent/CN214980649U/en active Active
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