TWI723761B - Depth adjustment device that drives the screw to a fixed depth during the process of driving the screw - Google Patents

Abstract

A depth adjustment device that drives the screw to a fixed depth during the process of driving the screw. The depth adjustment device enables the user to control the surface depth of the workpiece material drilled by the screw. The depth adjustment device includes a rod body combined with a control A driving device and a flaring sleeve; and, the control member is used as a stacking set on the driving device to lock the driving device from being displaceable, and the flaring sleeve can be embedded and displaced by the driving device, thereby The flaring sleeve can advance or retreat on the rod body, and the user selects the longitudinal displacement position of the driving device according to the required screw depth, so that the screw does not penetrate the workpiece excessively, so that the surface of the workpiece material can reduce dents to a minimum.

Description

Depth adjustment device that drives the screw to a fixed depth during the process of driving the screw

The invention relates to a driving depth position positioning used to maintain the depth of the screw contacting the surface of a work material, so as to prevent damage to the surface of the workpiece material and prevent the screw from being over-driven to damage the screw.

Screw fixing depth adjustment devices are well known in the art, such as US Patent Publication No. 20080289459, US Patent No. 5,235,327, US Patent No. 4,736,658, and so on.

Among them, the US Patent Publication No. 20080289459 has a freely rotating sleeve. The sleeve 10 is used to prevent the screw from exceeding the depth required by the user. In order to realize the setting and maintaining the return of the sleeve before releasing the torque of the drive screw To prevent the screw from being over-driven, a stop 16 and a driving device 14 are provided. The driving device, the stop and the sleeve are sleeved on a screw in sequence, the driving device and the sleeve It can be helically rotated and displaced to the desired screw position from any position along the axial direction on the screw, and the stop can only be pushed in the axial direction and cannot be rotated; the operation mode is: the driving device is in a The screw is rotated to any position along the axial direction to the required position to be fixed on the screw, and then the stopper is pushed back in the axial direction until the drive device can be covered. For this purpose, the A part of the stop block abuts to restrict the driving device from being able to drive and rotate further, and finally the sleeve is pushed back axially until it abuts the stop block; therefore, the sleeve can restrict the screw at a fixed depth position. Do not Can drive forward again.

The US Patent Publication No. 20080289459 discloses a three-step operation method. The first step is to move the driving device, the second step is to move the stopper, and the third step is to move the sleeve. In order to adjust the required screw depth position , You must first operate the driving device to rotate the screw to a position of the screw, and then push the stop backward in the axial direction, and finally move the sleeve backward. During these displacement actions, it is impossible to know the position of the sleeve in real time. Need to adjust the depth position, so it is necessary to adjust the rotating drive device many times, and each time the adjustment is changed, the sleeve must first be displaced forward, and then the stopper must be pushed away from the drive device, so that the drive device can continue to rotate and move. Therefore, it is impossible to know whether the depth position of the sleeve needs to be fixed is correct when adjusting the driving device, which is very inconvenient in use;

And, the U.S. Patent Publication: The screw longitudinal rod disclosed in 20080289459 is provided with two parallel corresponding rails, and the stopper is provided with two protruding ribs corresponding to the rails. These two structures have major shortcomings. The output rotational torque of electric tools is getting higher and higher. The basic rotational torque is generally between 150 Newton meters (Nm) and 240 Newton meters (Nm), and the revolutions per minute (RPM) is between 3200 and 3600. The counteracting impact force generated by the sleeve 10 after contacting the working platform produces a vibration number (IPM) between 3500 and 4000 per minute. Therefore, the impact force received by the sleeve will be fed back to the block. The ribs of the block and the The rails collide with each other and deform. When the ribs of the stopper deform, they cannot move smoothly on the rail of the screw, and may even be stuck on the rail of the screw and cannot move, so the drive device cannot adjust and move;

In addition, the US Patent Publication: 20080289459 is provided with two corresponding bead bodies at the outer edge of the driving device. The bead bodies are sleeved on a spring, so the bead bodies can be a flexible part of the driving device. Protruding from the driving device or sinking into the driving device, and, The stopper is provided with a corresponding groove for the bead to fit into. Therefore, when the driving device rotates and adjusts the displacement to the position of the rod, it must be rotated once until the bead can fit in the position of the corresponding groove. The size that limits the depth of adjustment must be at least half a turn to be a depth size, so it is impossible to fine-tune the depth position.

In order to improve these problems, the conventional structural shortcomings are improved, the depth position of the sleeve to be adjusted can be known quickly and instantaneously, and the defect that the stopper will be damaged due to the vibration force is improved for the purpose.

Another purpose is that this creation can fine-tune the depth position and provide the best depth adjustment function.

The creative depth adjustment device allows users to control the surface depth of the workpiece material drilled by the screw. The depth adjustment device includes a rod body with a first part and an extended second part. The first part is provided for For the fixing function of the power tool, it is a polygonal rod; and the second part is a screw-shaped body. The screw-shaped body extends near the end and is provided with a set groove, wherein the two sides of the screw-shaped body are provided with corresponding parallel longitudinal directions A first plane and a second plane that extend; and, the rod body combines a control element, a driving device, and a flaring sleeve; and, the control element is provided with a push portion and an extended polygonal gear head; and, Thereby, the control member can be pushed on the screw rod for axial sliding displacement; and, the driving device is provided with an adjusting portion and an extended sleeve portion, and the adjusting portion is provided with a polygonal second channel and extending to the sleeve portion. The threaded third channel, wherein the polygonal shape of the second channel conforms to the shape of the polygonal gear head corresponding to the control member; and, the flaring sleeve can be pushed and displaced on the rod by the driving device; and, The control member serves as a positioning function for locking the drive device from being unable to move and rotate on the rod body, and the drive device serves as pushing the expansion device. The mouth sleeve can be displaced and positioned at any position on the rod body. The adjustment depth is forward or backward on the rod body. The flared sleeve will rotate idly when it is against the surface of the workpiece material, so that the screw will not go deep into the surface of the workpiece material to achieve the correctness. The positioning.

1: Rod body

1a: The first part

1b: Part Two

11: Polygonal rod

13: Screw shape

15: Assembling Department

151: Groove

16: first C-ring

14a: first plane

14b: second plane

12: Hole

2: stop post

3: Control parts

4: The second C-ring

5: Drive device

6: First China Division

7: pipe sleeve

10: Flaring sleeve

8: Second Washer

9: Fixed sleeve

31: Push

32: Polygonal gear head

33: First channel

34a: third plane

34b: fourth plane

51: Adjustment Department

52: Set Department

511: second channel

512: Annular limit slot

522: Ring Groove

521: Third Channel

101: fourth channel

102: first end face

103: second end face

104: contact surface

17: Screwdriver head

18: Screw

19: Workpiece material

The first image is a three-dimensional exploded view of this creation.

The second picture is a three-dimensional view in another direction for this creation.

The third picture is the combined picture for this creation.

The fourth figure is a cross-sectional view of this creative combination.

The fifth picture is a picture of the creation embodiment.

Referring to the first to fourth figures, this creation implementation description includes a rod body 1 having a first part 1a and an extended second part 1b. The first part 1a is provided as an assembly for The fixing function of the electric tool is a polygonal rod body 11; and, the second part 1b is a screw-shaped body 13, which extends close to the end to form a set of sleeve portions 15 which are provided with A groove 151, the inner diameter of the groove 151 is sleeved with a first C-ring 16; and, both sides of the screw-shaped body 13 are provided with a first plane 14a and a second plane 14b extending in parallel and longitudinally, the first plane 14a A hole 12 is provided near the first portion 1a from the second plane 14b. The hole 12 is assembled with a blocking post 2; and the rod body 1 is assembled with a control member 3, a driving device 5, and a first wall in sequence. Division 6, a flaring sleeve 10, a second washer 8, a fixed sleeve 9; and, the control member 3 is provided with a push portion 31 and an extended polygonal gear head 32, and the push portion 31 extends to The polygonal gear head 32 is provided with a first channel 33. The inner diameter of the first channel 33 is provided with a third plane 34a and a fourth plane 34b corresponding to each other in parallel. The third plane 34a and the fourth plane 34a are parallel to each other. The setting position of the surface 34b corresponds to the positions of the first plane 14a and the second plane 14b of the screw-shaped body 13, whereby the control member 3 can be pushed on the screw-shaped body 13 for axial sliding displacement; and the driving device 5 is provided with an adjusting part 51 and an extended set portion 52. The adjustment portion 51 is provided with a polygonal second channel 511, and the second channel 511 is provided with an annular limiting groove 512, and the annular limiting groove 512 is embedded in a second C-shaped ring 4; And, the second channel 511 is connected to the junction of the sleeve portion 52 and extends to form a third channel 521, the third channel 521 has a threaded segment formed and a smooth segment formed by extension; and, the sleeve portion 52 is provided There is a ring groove 522; and the polygonal shape of the second channel 511 of the adjusting portion 51 conforms to the shape of the polygonal stop 32 corresponding to the control member 3; and the flaring sleeve 10 is provided with a fourth channel 101, a tube The sleeve 7 is placed in the fourth passage 101. The fourth passage 101 has a first end surface 102 and a second end surface 103. The first washer 6 abuts against the first end surface 102, and the second washer 8 abuts against the second The end surface 103; and, the flared sleeve 10 extends to form a cover with a window, and the cover extends to the bottom end to form a contact surface 104.

This creation is assembled as follows: first pass the sleeve portion 52 of the driving device 5 through the first washer 6 and then pass through the tube sleeve 7 and sleeve the tube sleeve 7 into the fourth channel 101 of the flaring sleeve 10, and then the corresponding sleeve Enter the second washer 8; continue, pass the first part 1a of the screw-shaped body 13 through the third passage 521 until the second part 1b enters the thread segment and continues to screw forward until the set part 15 is deep To the smooth section of the third channel 521 of the driving device 5, and the assembly portion 15 is partially exposed to the sleeve portion 52 of the driving device 5, and finally the fixing sleeve 9 is fitted into the ring groove 522 of the sleeve portion 52; continue, the The third plane 34a and the fourth plane 34b of the first channel 33 of the control member 3 correspond to the first plane 14a and the second plane of the screw-shaped body 13 and then advance forward, and finally a stop post 2 is inserted into the hole of the first part 1. 12, the assembly of this creation is completed.

As shown in the third and fourth figures, the tube sleeve 7 is sleeved into the fourth channel 101 of the flaring sleeve 10, the sleeve portion 52 of the driving device 5 is sleeved in the tube sleeve 7, and the flaring sleeve 10 can be rotated on the assembly part 15, the first washers 6 and the second washers 8 can assist the lubrication of the flaring sleeve 10 when rotating Features.

In addition, the flaring sleeve 10 can be pushed and displaced by the driving device 5 at the position of the screw-shaped body 13; the polygonal gear head 32 of the control member 3 corresponds to the polygonal shape of the second channel 511 of the embedded adjustment part 51, and then The second C-ring 4 temporarily embeds the positioning control member 3 without being withdrawn. At this time, the control member 3 locks the driving device 5 to be unable to move and rotate at the position of the screw body 13, and the driving device 5 acts as pushing the flaring The sleeve 10 can be displaced and positioned at any position of the screw-shaped body 13 to adjust the depth, whereby the flared sleeve 10 can be advanced or retreated at the screw-shaped body 13, and the longitudinal direction of the drive device 5 is selected according to the controlled depth of the screw required by the user Shift the position so that the screw will not go too deep into the workpiece, so that the surface of the workpiece material can reduce the dent to the minimum.

Continuing, the method used in this creation to stably drive the screw to a controlled depth during the driving process is: rotate the driving device 5 on the screw-shaped body 13 to move to the desired position, and the flaring sleeve 10 Synchronously with the screw-shaped body 13 being driven by the drive device 5 to move forward or backward, and then push the control member 3 to the second channel 511 of the drive device 5 until the polygonal gear head 32 is inserted into the second channel 511, Therefore, the control member 3 locks the driving device 5 from being displaced or rotated.

The implementation method is: first put the head of the driver bit 17 into the groove 151 of the assembly portion 15 of the driving device 5 to fit and position as shown in the fourth figure. At this time, the working end of the driver bit 17 is exposed to the flaring. The contact surface 104 of the sleeve 10, when the user rotates the position of the driving device 5, synchronously drives the longitudinal displacement of the flaring sleeve 10, and the user can directly see that the working end of the screwdriver bit 17 is exposed on the flaring sleeve 10. After determining the exposed length of the working end of the screwdriver head 17, the control member 3 is pushed to the second channel 511 of the driving device 5 until the polygonal gear head 32 is inserted into the second channel 511. Then the locking driving device 5 can no longer be rotated and displaced, at this time the first part 1a of the rod body 1 is combined For electric tools, the working end of the screwdriver head 17 is nested with a screw 18. When the electric tool starts to drive the creation to rotate until the contact surface 104 of the flaring sleeve 10 reaches the surface of the workpiece material 19, the flaring is performed. The sleeve 10 will be in an idling state, and at this time, the screw 18 can no longer be driven deep into the workpiece material 19, as shown in the fifth figure.

The advantages of this creation are:

1. When operating the driving device 5 to adjust the depth, you can instantly see how long the working end of the screwdriver head 17 is exposed on the contact surface 104 of the flaring sleeve 10, so it can be adjusted in place at one time.

2. When adjusting the size of the depth in this creation, it is possible to fine-tune the depth, because the second channel 511 of the rotating drive device 5 is a polygonal gear head 32 that corresponds to the control member 3, so when the drive device 5 is rotated to The required position corresponds to the end face of the polygon, and the corresponding position of each end face of the polygon is a fine-tuned size. The definition of the polygon refers to at least 4 corners or more, including: hexagon, octagon, 12 corner or star Or a zigzag shape, using an octagonal shape to explain why this creation is compared with the US Patent Publication: 20080289459. The US Patent Publication: 20080289459 requires at least half a revolution to be a depth dimension. Assuming that one revolution, the adjustable depth is 1mm. The half-turn is 1/2mm, so the conventionally known minimum adjustable depth is limited to 0.5mm, while the original creation is octagonal, the adjustable is 1/8mm, so the minimum adjustable depth of this creation is 0.125mm. By analogy, the multi-angle involute locking structure design of the original creation has the progressive function of fine-tuning the depth.

3. The first channel 33 of the control member 3 is provided with a third plane 34a and a fourth plane 34b corresponding to each other in parallel. The third plane 34a and the fourth plane 34b are set in positions corresponding to the first plane 14a and the second plane of the screw-shaped body 13 The plane 14b, for this reason, the control member 3 can slide at the position of the screw-shaped body 13, and because the plane corresponds to the plane, the first channel 33 of the control member 3 will be dispersed and not easily deformed when subjected to an external impact force.

However, the above-mentioned report is a preferred embodiment in the creative industry, and all equivalent changes made in accordance with the scope of the patent application for this creation do not depart from the scope of the patent application in this case.

1: Rod body

1a: The first part

1b: Part Two

11: Polygonal rod

13: Screw shape

15: Assembling Department

16: first C-ring

14a: first plane

12: Hole

2: stop post

3: Control parts

4: The second C-ring

5: Drive device

6: First China Division

7: pipe sleeve

10: Flaring sleeve

8: Second Washer

9: Fixed sleeve

31: Push

32: Polygonal gear head

33: First channel

34a: third plane

34b: fourth plane

51: Adjustment Department

52: Set Department

511: second channel

512: Annular limit slot

521: Third Channel

522: Ring Groove

101: fourth channel

102: first end face

103: second end face

104: contact surface

Claims (3)

A depth adjustment operation method for a depth adjustment device used to drive a screw to a fixed depth in the process of driving a screw. The depth adjustment method of the depth adjustment device is: a control member is adjusted and pushed on a screw body for axial sliding displacement , A driving device is screwed on the screw body, and a flaring sleeve is restrained by the driving device; using the driving device to screw on the screw body to advance or retreat to the desired position, the expansion The muzzle is synchronously restrained by the drive device to move forward or backward at the screw body; finally, in order to position the drive device, the control member is pushed to the channel of the drive device, because the control member is provided with an extension. In a polygonal gear head, the drive device is provided with a channel that is polygonal and conforms to the polygonal gear head embedding. When the polygonal gear head is embedded in the channel, the control member locks the drive device, and the drive device is It is positioned and cannot be driven for displacement and rotation; the flaring sleeve is also fixed and cannot be driven forward; therefore, after the screw is driven to a fixed depth, it cannot continue to be driven forward. A depth adjustment device for driving a screw to a fixed depth in the process of driving a screw, comprising: a rod body having a first part and an extended second part, the first part is provided as an assembly for The fixing function of the electric tool is a polygonal rod body; and, the second part is a screw-shaped body, and the screw-shaped body extends close to the end to form a set of sleeves, the set of sleeves is provided with a groove, and the groove is provided There is a first C-ring; and, both sides of the screw-shaped body are provided with a first plane and a second plane extending in parallel and longitudinally corresponding to each other, the first plane and the second plane are provided with a hole near the first part, and the hole Assemble a blocking post; and, the rod body is assembled with a control element, a driving device, a first washer, a flaring sleeve, a second washer, and a fixed sleeve in sequence; and, the control element is provided with There is a pushing portion and a polygonal gear head formed by an extension. The pushing portion extends to the polygonal gear head and is provided with a first channel. Both sides of the inner diameter of the first channel are provided with a third plane and a second plane corresponding to parallel. Four planes, the third plane The setting positions of the surface and the fourth plane correspond to the positions of the first plane and the second plane of the screw-shaped body, whereby the control member can be pushed on the screw-shaped body for axial sliding displacement; and, the driving device is provided with an adjusting portion and an extension Formed a set of parts, the adjustment part is provided with a polygonal second channel, the second channel is provided with an annular limiting groove, the annular limiting groove is embedded in a second C-ring; and the second channel is connected to the A thread-like third channel extending from the junction of the sleeve portions; and the sleeve portion is provided with a ring groove; and the polygonal shape of the second channel of the adjusting portion conforms to the shape of the polygonal gear head corresponding to the control member; and , The flaring sleeve is provided with a fourth channel, a pipe sleeve is placed in the fourth channel, the fourth channel has a first end surface and a second end surface, the first washer abuts against the first end surface, and the second washer Against the second end surface; the sleeve portion of the driving device passes through the first washer and then the pipe sleeve, and after the pipe sleeve is sleeved into the fourth channel of the flaring sleeve, the second washer is correspondingly sleeved; Continue to pass the first part of the screw-shaped body through the third passage until the second part enters the threaded section and continues to screw forward until the set part penetrates into the smooth section of the third passage of the driving device, and the set The sleeve part is partially exposed to the sleeve part of the driving device, and finally the fixing sleeve is fitted into the ring groove of the sleeve part; continuing, the third plane and the fourth plane of the first channel of the control member correspond to the screw-shaped body The first plane and the second plane are pushed forward, and finally a blocking column is inserted into the hole of the first part. A depth adjustment device for driving a screw to a fixed depth in the process of driving a screw, comprising: a rod body having a first part and an extended second part, the first part is provided as an assembly for The fixing function of the electric tool; and, the second part is a screw-shaped body that extends close to the end to form a set of sleeve parts; and, both sides of the screw-shaped body are provided with a corresponding parallel and longitudinally extending first plane and A second plane; a control member, the control member is provided with a push portion and an extended polygonal gear head, the pushing portion extends to the polygonal gear head with a first channel, the first channel has two inner diameters There is a parallel corresponding one on the side A third plane and a fourth plane, the positions of the third plane and the fourth plane corresponding to the first plane and the second plane of the screw-shaped body are nested, the control member can be pushed on the screw-shaped body for axial sliding displacement; A driving device, the driving device is provided with an adjusting part and an extended sleeve part, the adjusting part is provided with a polygonal second channel; and the second channel is connected to the thread-shaped first extending formed at the junction of the sleeve part Three channels; and, the polygonal shape of the second channel of the adjusting part conforms to the shape of the polygonal gear head corresponding to the control member; and the screw-shaped body penetrates the second channel of the driving device and is screwed into the third channel Thread section, until the assembly part penetrates into the smooth section of the third channel of the driving device, and the assembly part is partially exposed to the sleeve part of the driving device; a flaring sleeve, the flaring sleeve is provided with a fourth channel, one The pipe sleeve is placed in the fourth channel, and the fourth channel has a first end surface and a second end surface, a first washer against the first end surface, and a second washer against the second end surface; and, the pipe sleeve is inserted into After the fourth passage of the flaring sleeve, the sleeve portion of the driving device passes through the first washer and then passes through the tube sleeve to correspondingly sleeve into the second washer, and finally a fixed sleeve is fitted into the ring groove of the sleeve. .

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