TWM488369U - Automatic screwdriver magnetic connecting shaft - Google Patents

Description

Automatic screwdriver magnetic coupling shaft

This creation is aimed at improving the function of the automatic screwdriver, especially the dual function of quick combination and clamping positioning, and the effect of combining the automatic screwdriver with the various types of screwdrivers to achieve a true combination and stable clamping, thereby improving the snail The accuracy of the lock operation to improve the quality of the automatic screwdriver coupling shaft.

According to the known automatic screwdriver, the internal composition generally includes: a motor mechanism for providing power output, a gear mechanism for providing power transmission and shifting, a clutch mechanism for setting a required torque value, and a clamp for providing a coupling and disengaging screwdriver. The head mechanism and the trigger mechanism for providing the operation button; the automatic screwdriver formed thereby can be combined with various types of screwdriver heads through the chuck mechanism to achieve the required screw lock operation and effect.

The above-mentioned chuck mechanism generally includes: a coupling shaft for providing the insertion of the driver head; a ring sleeve sleeved on the end edge of the coupling shaft, and a steel ball embedded therein to provide the positioning screwdriver head; The spring is embedded between the coupling shaft and the collar to provide positioning or release of the collar to the screwdriver head by sliding action; a snap ring for positioning the spring. Therefore, in use, when the screwdriver is to be combined, the sleeve is inserted and inserted into the end of the screwdriver head, and the sleeve is covered by the elastic restoring force of the spring to cover the end of the screwdriver head and is dropped by the steel ball. The positioning is achieved in the annular groove below the tip, and the effect of quickly combining the screwdriver head is obtained. When disassembling the screwdriver head, push the collar to move so that The steel ball is released from the groove of the ring and can release the restriction on the screwdriver head and can be easily removed or replaced.

The above-mentioned collet mechanism for the conventional automatic screwdriver does not seem to ask much in use. The problem arises and can meet the simple locking requirements of the average user. However, considering that the product can continue to exist in the market, it is necessary to continuously develop and improve the performance of the existing products, especially for the chuck mechanism, due to the common common screwdriver. The structure of the head providing a combined positioning function is provided with an annular groove under the end, so that the design is to attach a steel ball to the inner surface of the ring sleeve of the chuck mechanism to achieve the card abutment; however, the combination can only provide a clip. The combination of the head mechanism and the screwdriver head does not limit the rotation of the screwdriver head, so it is obviously impossible to achieve the correctness and accuracy of the precision screw lock operation.

The main purpose of this creation is to provide an automatic screwdriver magnetic coupling shaft, The magnetic coupling shaft provides the synergistic effect of combining the fast magnetic attraction and the double clamping positioning, so that the automatic screwdriver can achieve the double effect of the actual combination and the stable clamping when combined with the various types of the screwdriver, thereby improving the accuracy of the screw locking operation. In order to achieve good screw quality results.

In order to achieve the above objectives, the technical means adopted in this case is to design and propose a kind of The improved automatic screwdriver magnetic coupling shaft is externally covered with a casing, and at least is provided with: a motor mechanism, a gear mechanism, a torsion mechanism, a chuck mechanism, a trigger mechanism, and the coupling shaft is disposed on the chuck mechanism The magnetic coupling shaft includes: a shaft rod, a bearing is arranged at the middle portion; a shaft cap is sleeved at one end of the shaft rod and covers the bearing; a sliding sleeve is sleeved on the The shaft is away from one end of the shaft cap, and the sliding sleeve is axially slidable and a magnet is disposed at an end of the shaft cap. The circumferential surface of the shaft portion of the sleeve is extended from the end edge to form a slightly convex portion. Starting from the class segment, the sliding sleeve will not fall off due to slipping; and the sleeve sleeve is provided with a sliding sleeve end The edge recess is provided with a coupling groove for providing a bit insertion.

The above-mentioned shaft corresponding sleeve is provided with a sliding sleeve and the circumferential surface is further provided with a separation distance One of the positioning holes, and one or more of the surrounding type of clamping holes, the positioning holes and the each of the clamping holes are provided with steel balls.

The shape of the groove of the coupling groove at one end of the above shaft can be any geometric structure In order to match the shape of the joint end of the conventional common screwdriver head, such as any one of a circle, a square, and a polygon.

The above magnetic coupling shaft can be applied to various automatic screwdrivers such as electric, pneumatic and semi-automatic Any of the automatic screwdrivers.

The sliding sleeve described above may be provided with a magnet at an end away from the shaft cap.

(1)‧‧‧Automatic screwdriver

(10) ‧‧‧Shell

(2) ‧‧ ‧Motor mechanism

(3) ‧‧‧Clutch mechanism

(31)‧‧‧Transfer shaft

(4) ‧ ‧ chuck mechanism

(5) ‧‧‧Boat mechanism

(6) ‧ ‧ control agencies

(7)‧‧‧Magnetic coupling shaft

(71)‧‧‧ shaft

(711)‧‧‧Class

(712) ‧‧‧ Combination slot

(72) ‧ ‧ bearings

(73)‧‧‧ shaft cap

(74)‧‧‧Sleeve

(741)‧‧‧ Magnet

(742)‧‧‧Positioning holes

(743)‧‧‧Clamping holes

(744) ‧ ‧ steel balls

(8) ‧ ‧ ‧ screwdriver head

(81) ‧ ‧ joint end

(82) ‧‧‧ annular groove

The first figure is a structural diagram of the automatic screwdriver magnetic coupling shaft used for the automatic screwdriver.

The second figure is the appearance structure diagram of the magnetic screwdriver shaft of the automatic screwdriver.

The third figure is a combined sectional view of the automatic screwdriver magnetic coupling shaft of the present invention.

The fourth figure is a schematic diagram of the state of the automatic screwdriver magnetic coupling shaft combined with the screwdriver head.

The fifth figure is a schematic diagram of the state of the automatic screwdriver magnetic coupling shaft disassembling the screwdriver head.

The sixth drawing is a cross-sectional view of the state in which the automatic driver magnetic coupling shaft of the present invention is implemented.

Please refer to the first figure for a gun-shaped automatic screwdriver structure. The automatic screwdriver can be of any type (such as electric or pneumatic type). The shape is not limited, usually it is upright or gun shape.

The automatic screwdriver (1) has the same construction as the conventional one, including: the outer shell The body (10); and the housing (10) are provided at least: a motor mechanism (2), a clutch mechanism (3), a chuck mechanism (4), a trigger mechanism (5), and a control mechanism (6) Wherein the motor mechanism (2) is a power source; the clutch mechanism (3) has a gear configuration in combination with a clutch and a cam and a torque structure, and is coupled to the motor and driven to provide effective power transmission and shifting, and Providing a preset torque output; the chuck mechanism (4) is driven by the clutch mechanism (3), and provides various types of screwdriver heads (8) interposed; the trigger mechanism (5) is used to provide automatic screwdriver operation The start control has the function of preventing the button from being reset; the control mechanism (6) is provided with a board of the microcontroller and a power source for supplying the required power.

Referring to the second figure, the improved feature of the creation is that the chuck mechanism (4) for the automatic screwdriver (1) is improved to facilitate quick and stable combination of various types of screwdriver bits (8). Accordingly, the magnetic coupling shaft (7) of the improved design of the present invention is disposed in the above-mentioned chuck mechanism (4), and is coaxially connected with the impact rod (41) in the chuck mechanism (4); When the magnetic coupling shaft (7) is combined with various types of screwdriver bits (8), the screwdriver head (8) can be driven by a series of power transmission mechanisms of the automatic screwdriver (1) to achieve the desired Lock the work.

For the specific structure of the magnetic coupling shaft (7), please refer to the second and third figures, mainly having a shaft (71), a bearing (72) is arranged at the middle of the shaft (71); a shaft cap (73) ), is sleeved at one end of the shaft (71) and covers the bearing (72), and has a threaded connection fixed on the circumferential surface of the shaft cap (73); a sliding sleeve (74) is sleeved on the shaft (71) And at the other end different from the shaft cap (73), the sliding sleeve (74) is axially slidable and a ring-shaped magnet (741) is disposed at an end of the shaft cap (73). 74) Set The peripheral surface of the portion of the shaft (71) extends from the end to form a slightly convex section (711) so that the sleeve (74) does not fall off due to slippage. Further, an end edge of the shaft cap (73) provided with the shaft cap (73) is coupled with an adapter shaft (31) disposed in the clutch mechanism (3), and the shaft rod (71) is sleeved with a sliding sleeve (74) The end edge is concavely provided with a coupling groove (712) for providing various types of screwdriver heads (8), and the shape of the groove of the coupling groove (712) can be formed by any geometric shape to match the common The shape of the joint end (81) of the screwdriver head (8), such as a circular shape, a square shape, a polygonal shape, etc.; and the circumferential surface of the shaft sleeve (71) corresponding to the sleeve (74) is further provided with a space One of the positioning holes (742) and one or more of the surrounding type of clamping holes (743), the positioning holes (742) and each of the clamping holes (743) are provided with steel balls (744).

The magnet disposed at the end of the sliding sleeve (74) toward the shaft cap (73) (741), may also be disposed in an end edge of the sliding sleeve (74) away from the shaft cap (73) (such as the sliding sleeve at one end of the magnetic coupling shaft shown in the first figure); thereby, by magnetic means, The magnetic coupling shaft (7) is quickly coupled to various types of driver bits (8) and urges the sleeve (74) to be quickly positioned.

Please refer to the fourth and fifth figures together. As shown in the fourth figure, according to the above magnetic The structure of the coupling shaft (7), in the operation of combining the screwdriver head (8), pulls the sliding sleeve (74) out of the shaft (71) for axial displacement and away from the bearing (72), so that the sliding sleeve ( 74) Release the compression of all the steel balls (744). At this time, the joint end (81) of the screwdriver head (8) can be inserted into the coupling groove (741). After being positioned, the sliding sleeve (74) is released and utilized. The suction of the magnet (741) is quickly reset, causing the sleeve (74) to resume compression of all the steel balls (744) again, so that the screwdriver head (8) is smoothly fixed to the chuck mechanism (4) and reaches Linked together, and achieved the dual effect of quickly achieving positioning and correct clamping. As shown in the fifth figure, in contrast, in the operation of disassembling the bit (8), the sliding sleeve (74) is also pulled out, so that the sliding sleeve (74) releases the pressing of all the steel balls (744). The user can easily pull the screwdriver head (8) away from the magnetic coupling shaft (7).

The above-mentioned magnetic coupling shaft (7) structure type can be applied to all automatic starting Sub-motors, such as electric, pneumatic, semi-automatic, and with different types of automatic screwdrivers, there is a slight difference in the size of the magnetic coupling shaft (7), but this part is a simple modification.

Please refer to the third and sixth figures together, which reveals the magnetic coupling shaft and the screwdriver respectively. The combination of the head and the cross-sectional view; the joint end (81) of the screwdriver head (8) has been inserted into the coupling groove (712) of the end edge of the magnetic coupling shaft (7), and the sliding sleeve (74) has been borrowed Reset by the suction force of the magnet (741), the sliding sleeve (74) compresses all the steel balls (744) provided in the positioning holes (742) and the clamping holes (743) on the circumferential surface of the shaft (71). The steel ball (744) in the positioning hole (742) is dropped into the annular groove (82) on the circumferential surface of the driver head (8), and the steel ball (744) in the clamping hole (743) is subjected to the sliding sleeve ( 74) The compression produces a clamping effect on the joint end (81) of the bit (8); as shown in the fourth figure, the steel ball (744) in the positioning hole (742) has fallen into the bit (8) Bonding into the annular groove (82) on one side of the end (81); as shown in the fifth figure, the steel ball (746) in all the clamping holes (743) is triangularly clamped to the screwdriver head (8) The end face (81) is combined with the circumference. In particular, regardless of the shape of the joint end (81) of the bit (8), it can be stabilized by the synchronous clamping action of the steel balls (744) in the plurality of clamping holes (743) of the annular design. Combined positioning.

It can be seen from the above description that the automatic screwdriver magnetic coupling shaft of the present invention is improved. It can provide the combination of quick combination and stable clamping, so that the screwdriver head will not have idling conditions, affecting the quality and precision of the screw lock; on the other hand, it can be widely applied to the clips of various automatic screwdrivers of different specifications, shapes and styles. The head mechanism is designed to achieve a wider range of flexible use, thereby improving the overall quality of the automatic screwdriver and making the function and structure of the automatic screwdriver more competitive in the market.

In summary, the creation of "automatic screwdriver magnetic coupling shaft" and custom automatic tools Compared with the structure that is used to join the screwdriver head through simple clips, it has a significant improvement in the quick combination, disassembly, and the combination of positioning and clamping. It is very rich in industrial use and fully complies with the new patent. Apply for the gist, and apply in accordance with the law.

The above is the specific embodiment of the creation and the technical means used. Many changes and modifications can be derived from the disclosure or teachings herein. If the equivalent changes made in accordance with the concept of this creation have not exceeded the spirit of the manual and the drawings, they should be considered. In the technical scope of this creation, it is first and foremost.

(7)‧‧‧Magnetic coupling shaft

(71)‧‧‧ shaft

(711)‧‧‧Class

(712) ‧‧‧ Combination slot

(72) ‧ ‧ bearings

(73)‧‧‧ shaft cap

(74)‧‧‧Sleeve

(741)‧‧‧ Magnet

(742)‧‧‧Positioning holes

(744) ‧ ‧ steel balls

(8) ‧ ‧ ‧ screwdriver head

(81) ‧ ‧ joint end

Claims (5)

The utility model relates to an automatic screwdriver magnetic coupling shaft, which is externally covered with a casing, and has at least a motor mechanism, a gear mechanism, a torque mechanism, a chuck mechanism and a trigger mechanism, and the coupling shaft is disposed in the chuck mechanism. And the coupling action between the mechanisms; the magnetic coupling shaft comprises: a shaft rod, a bearing is arranged at the middle portion; a shaft cap is sleeved at one end of the shaft rod and covers the bearing; a sliding sleeve is sleeved on the sleeve The shaft is away from one end of the shaft cap, and the sliding sleeve is axially slidable and a magnet is disposed at an end of the shaft cap. The circumferential surface of the shaft portion of the sleeve is extended from the end edge to form a slightly convex portion. The segment is made so that the sliding sleeve does not fall off due to the slipping; and the coupling sleeve is provided with a coupling groove for providing the insertion of the sub-head in the sleeve sleeve. The automatic screwdriver magnetic coupling shaft according to claim 1, wherein the peripheral surface of the shaft sleeve corresponding to the sleeve is further provided with one positioning hole with a spacing distance, and one or more clamping holes for the surrounding type. A steel ball is disposed in the positioning hole and each of the clamping holes. The automatic screwdriver magnetic coupling shaft according to claim 1, wherein the shape of the groove of the coupling groove can be any geometric shape to match the shape of the joint end of the conventional common screwdriver head, such as a circle, a square, and a polygon. Any of them. The automatic screwdriver magnetic coupling shaft according to claim 1, wherein the magnetic coupling shaft can be used for any of various automatic screwdrivers such as electric, pneumatic and semi-automatic screwdrivers. The automatic screwdriver magnetic coupling shaft according to claim 1, wherein the sliding sleeve is provided with a magnet at an end away from the shaft cap.