TWI689384B - Restricting member for a screwdriver - Google Patents

Abstract

A restricting member for a screwdriver includes a driving member inserted into the axial direction of a sliding sleeve, a plurality of balls are installed between the driving member and the sliding sleeve, a positioning ring and an adjusting collar are mounted on the outer surface of the sliding sleeve and adjacent to each other and one end of a screwdriver is inserted into the driving member and the ball is formed to resist. The use of the screwdriver can cause the end of the adjusting collar to be placed on a working surface, and the adjusting collar can drive the sliding sleeve to displace, so that each ball releases the resisting action on the screwdriver and the screwdriver is not driven. The invention has the advantages of compact structure and small length.

Description

Limit component for screwdriver

The invention relates to the technical field of a tool assembly, in particular to a limit assembly applied to a power tool and capable of being combined with a screwdriver.

Power tools are commonly used in the machinery industry, construction industry and decoration industry as a power source, and the power tools are used to drive screws, and screwdrivers of different sizes or shapes can be installed according to the characteristics of the working surface to improve work efficiency.

In response to the needs of users, a combination of a limit component with a depth limiter and a screwdriver head has been developed to effectively control the working depth, and at the same time when the working depth is reached, the screwdriver head no longer continues to drive the screw Deep inside the workpiece.

The above-mentioned limit assembly is usually composed of multiple components. For example, the limit assembly disclosed in Taiwan Patent No. I457214 has at least eight main components, so the structure is more complicated, and the combined length is large, which is not conducive to construction. use.

An object of the present invention is to provide a limiting component for a screwdriver, which has a combination of fewer components, thereby achieving the effects of streamlined structure and shorter length, and solving the disadvantages of the conventional limiting component.

In order to achieve the above purpose and effect, the limiting component disclosed in the present invention is a combination of a driving member, a sliding sleeve, a plurality of steel balls, a positioning ring and an adjusting collar. The driving member is connected to a driving sleeve at one end of a driving rod. The driving sleeve has an accommodating chamber in the axial direction. The outer surface of the driving sleeve has a shoulder. A plurality of bead holes are formed through The driving sleeve radially communicates with the accommodating chamber; one end of the sliding sleeve is a first end, and the other end is a second end. The inner wall of the sliding sleeve has an abutting flange and an escape ring groove , The escape ring groove is located between the abutting flange and the second end, the sliding sleeve can be elastically movably sleeved on the periphery of the driving sleeve, the abutting flange is used to abut the driving sleeve The shoulder portion of the barrel; a plurality of steel balls are respectively installed in each bead hole and the surface is exposed respectively corresponding to the inner wall surface of the accommodating chamber and the sliding sleeve; the positioning ring and the adjusting collar are locked to the sliding sleeve The outer surface is adjacent and the second end of the sliding sleeve is located inside the adjusting collar.

The accommodating chamber in which one end of the one-piece is inserted into the driving member forms a resistance with each of the steel balls, the use process of the screwdriver can make the end of the adjusting collar rest against a working surface, and then the adjusting collar drives the sliding The displacement of the sleeve causes the abutment flange of the sliding sleeve to separate from the shoulder of the drive sleeve, and the escape ring groove is opposed to the steel ball, thereby releasing the resistance of each steel ball to the screwdriver, so that The drive member and the screwdriver are relatively rotatable, and the screwdriver no longer penetrates into the working surface.

The following are the preferred embodiments according to the purpose, efficacy and structural configuration of the present invention, and detailed description in conjunction with the drawings.

10: Drive parts

12: drive rod

14: drive sleeve

16: storage room

18: shoulder

19: bead hole

20: sliding sleeve

21: the first end

22: Second end

24: against the flange

26: Avoidance ring groove

28: External thread part

30: steel ball

40: locating ring

42: Female thread

50: Adjust the collar

52: Female thread part

60: spring

62: closed washer

64: Assembly space

70: Magnetic components

80: screwdriver

82: screw

84: work surface

Figure 1 is an exploded view of the present invention.

Figure 2 is a schematic diagram of the combined structure of the present invention.

FIG. 3 is a diagram 1 of the use state of the present invention.

FIG. 4 is a second schematic view of the use state of the present invention.

Please refer to FIG. 1 and FIG. 2, which shows a limiting assembly including a driving member 10, a sliding sleeve 20, a plurality of steel balls 30, a positioning ring 40 and an adjusting collar 50.

The driving member 10 is connected to a driving sleeve 14 at one end of a driving rod 12. The driving rod 12 and the driving sleeve 14 may be integrated or connected by two independent members. The driving sleeve 14 has an accommodating chamber 16 in the axial direction, and the accommodating chamber 16 is a cylindrical hole. The driving sleeve 14 may have a stepped cylindrical shape, so the outer surface of the driving sleeve 14 has a shoulder 18. A plurality of bead holes 19 are formed in the radial direction of the driving sleeve 14 to communicate with the accommodating chamber 16.

The sliding sleeve 20 has a first end 21 at one end and a second end 22 at the other end. The inner wall of the sliding sleeve 20 has an abutting flange 24 and an escape ring groove 26, wherein the escape ring groove 26 is located between the abutting flange 24 and the second end 22.

The sliding sleeve 20 is sleeved on the periphery of the driving sleeve 14, and the abutting flange 24 is used to abut the shoulder 18 of the driving sleeve 14.

A plurality of steel balls 30 are installed in each of the bead holes 19, and the surface of each of the steel balls 30 is exposed to the interior of the accommodating chamber 16 and the inner wall surface of the sliding sleeve 20, respectively.

The positioning ring 40 is locked on the outer surface of the sliding sleeve 20; that is, the outer surface of the sliding sleeve 20 may have an external threaded portion 28, and the inner wall of the ring hole of the positioning ring 40 has a threaded portion 42. The sliding sleeve passes through the positioning ring 40, and the external thread portion 28 is engaged with the internal thread portion 42, so that the positioning ring 40 is locked to the outer surface of the sliding sleeve 20.

The adjusting collar 50 is a short cylindrical member. The adjusting collar 50 is locked on the outer surface of the sliding sleeve 20 and is adjacent to the positioning ring 40. In other words, the axially perforated inner wall of the adjusting collar 50 is inside the mask There is an internal thread portion 52, and the sliding sleeve 20 passes through the adjusting collar 50. The internal thread portion 52 engages the external thread portion 28, so that the adjusting collar 50 is locked to the outer surface of the sliding sleeve 20.

In particular, the adjusting collar 50 is adjacent to the positioning ring 40, so the fitting position of the adjusting collar 50 in the sliding sleeve 20 is limited by the position of the positioning ring 40. Secondly, the second end 22 of the sliding sleeve 20 is located inside the adjusting collar 50, so that the second end 22 of the sliding sleeve 20 has an appropriate distance from the end of the adjusting collar 50. The user adjusts the position of the positioning ring 40 and the adjusting collar 50 to adjust the distance between the second end 22 of the sliding sleeve 20 and the end of the adjusting collar 50.

The invention also includes a spring 60 and a closed washer 62. The sliding sleeve 20 is sleeved on the periphery of the driving sleeve 14 of the driving member 10, then the inner wall surface between the abutting flange 24 and the first end 21 is separated from the outer wall surface of the driving sleeve 14 and forms a Assembly space 64. The closing gasket 62 is connected to the driving sleeve 14 and corresponds to the assembly space 64. The spring 60 is installed in the assembly space 64. And one end of the spring 60 is at or against the abutting flange 24 and the other end is at or against the closing washer 62. In this way, the sliding sleeve 20 is elastically and movably sleeved on the periphery of the driving sleeve 14, and the abutting flange 24 reliably abuts the shoulder 18 of the driving sleeve 14.

In addition, the present invention may also include a magnetic element 70. The magnetic element 70 is installed at the end of the adjusting collar 50.

Please refer to FIG. 3, the use state of the present invention is that the driving rod 12 of the driving member 10 is connected to a driving tool (not shown), and one end of a sub-80 is inserted into the accommodating chamber 16 of the driving member 10 and each The steel ball 30 forms a stop, and one end of the screwdriver 80 can be connected to a screw 82. It is worth noting that the screw 82 can be attracted by the magnetic element 70 and does not fall off easily.

The screwdriver 80 is used to lock the screw 82 into a working surface 84. As the working stroke of the screwdriver 80 and the lock wire 82 lock into the working surface 84, the end of the adjusting collar 50 will lean against the working surface 84.

Please refer to FIG. 4 and then move the screwdriver 80 toward the working surface 84, the working surface 84 exerts a pushing force on the adjusting collar 50, so that the adjusting collar 50 drives the sliding sleeve 20 to move. When the sliding sleeve 20 is displaced, the abutting flange 24 is separated from the shoulder 18 of the driving sleeve 14 and the escape ring groove 26 is opposite to the steel ball 30, according to which each steel ball 30 can be appropriately Displacement releases the resistance to the screwdriver 80, and then the driving member 10 and the screwdriver 80 form a relatively rotatable state, and the screwdriver 80 is no longer driven and can no longer penetrate into the working surface 84.

Based on the structural configuration and use state of the present invention, the user adjusts the position of the adjusting collar 50 on the sliding sleeve 20, and can adjust the second end 22 of the sliding sleeve 20 and the end of the adjusting collar 50 The distance between the parts, and also adjust the distance between the end of the screwdriver 80 and the end of the adjusting collar 50, together with the clutch means formed by the steel ball 30 and the escape ring groove 26, the screwdriver 80 can be adjusted and limited The purpose of the work schedule.

Secondly, in the present invention, the sliding sleeve 20 is sleeved on the periphery of the driving sleeve 14 of the driving member 10, and the abutting flange 24 of the sliding sleeve 20 abuts the shoulder 18 of the driving sleeve 14, In combination with the compression and extension of the spring 60, and the end of the first end 21 of the sliding sleeve 20 is not blocked by any member, the present invention has a simple structure and a relatively short overall length.

The above-mentioned embodiments are merely illustrative for explaining the technology and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify and change the above embodiments without violating the technical principle and spirit of the present invention. Therefore, the scope of protection of the rights of the present invention should be as listed in the patent application scope described later .

10: Drive parts

12: drive rod

14: drive sleeve

16: storage room

18: shoulder

19: bead hole

20: sliding sleeve

21: the first end

22: Second end

24: against the flange

26: Avoidance ring groove

28: External thread part

30: steel ball

40: locating ring

42: Female thread

50: Adjust the collar

52: Female thread part

60: spring

62: closed washer

64: Assembly space

70: Magnetic components

Claims (4)

A limiting component for a screwdriver is used to combine a screwdriver and limit the working stroke of the screwdriver, which includes: a driving member, an end of a driving rod is extendedly connected to a driving sleeve, and the driving rod and the driving There is no relative displacement of the sleeve. The drive sleeve has an accommodating chamber in the axial direction. The outer surface of the drive sleeve has a shoulder. A plurality of bead holes are formed through the drive sleeve to communicate radially with the volume. A sliding sleeve, one end of which is a first end, and the other end is a second end. The inner wall of the sliding sleeve has an abutment flange and an escape ring groove, the escape ring groove is located in the Between the abutting flange and the second end, the sliding sleeve is elastically movably sleeved on the periphery of the driving sleeve, and the abutting flange is used to abut against the shoulder of the driving sleeve; a plurality of steel balls It is installed in each bead hole, and the surface of each steel ball is exposed respectively corresponding to the inner wall surface of the accommodating chamber and the sliding sleeve; a positioning ring is locked on the outer surface of the sliding sleeve; an adjustment The collar is locked on the outer surface of the sliding sleeve and is adjacent to the positioning ring, and the second end of the sliding sleeve is located inside the adjusting collar; wherein one end of the screwdriver is inserted into the receptacle of the driving member The setting chamber forms a resistance with each of the steel balls, and the use of the screwdriver can make the end of the adjusting collar rest on a working surface, and then the adjusting collar drives the displacement of the sliding sleeve, resulting in the sliding sleeve The abutment flange is separated from the shoulder of the drive sleeve, and the escape ring groove is opposed to the steel ball, thereby releasing the resistance of each steel ball to the screwdriver, so that the drive member and the screwdriver can form relative rotation, And the screwdriver is no longer deep into the work surface. The limit assembly for a screwdriver as described in item 1 of the patent application scope, wherein the accommodating chamber of the drive sleeve of the drive member is a cylindrical hole. The limit assembly for a screwdriver as described in item 1 of the scope of the patent application further includes a spring and a closed washer, the sliding sleeve is sleeved on the periphery of the drive sleeve of the drive member, the abutting flange and The inner wall surface between the first ends and the outer wall surface of the drive sleeve are separated to form an assembly space, the closing washer is connected to the drive sleeve and corresponds to the assembly space, and the spring is installed in the assembly space and one end is located at the abutment The flange, the other end is located in the closed gasket. The limit assembly for a screwdriver as described in item 1 of the scope of the patent application further includes a magnetic element, which is installed at the end of the adjusting collar.

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