TWI532570B - Screwdriver handle with a magazine for screwdriver bits - Google Patents

Description

Screwdriver handle with a body for the screwdriver bit

The present invention relates to a screwdriver driver having a body for a screwdriver bit as in the first aspect of the patent application.

According to the prior art, the handle of the screwdriver has a tool shank and various replaceable different screwdriver bits are inserted into the tool shank. These screwdriver bits are usually called Bits. So you can perform a variety of rotation functions with just one handle. In order to be able to provide the required number of screwdriver bits, the screwdriver handle has a body for storing the screwdriver head that is not currently used, so that the required screwdriver bit can be quickly obtained when needed.

EP 0 674 567 B1 discloses a screwdriver driver handle as described above, in which the cymbal system for storing the screwdriver bit is located in the screwdriver handle. The handle body of the screwdriver handle has a cylindrical cavity in which a rod coaxial with the cavity is provided. On this rod there is a sleeve which is axially movable, and the screwdriver bit can be clamped on the outer circumference of the sleeve. A sleeve with a screwdriver can be pushed onto the rod to a storage position within the cavity. If the sleeve is pulled out of the cavity to a removal position, the screwdriver bit on the sleeve can be accessed from the side and can be removed and/or placed. The screwdriver bit is fixed on the sleeve Inside the spring clip, the screwdriver bit is axially parallel to the outer circumference of the sleeve. In order to be able to store as many screwdriver bits as possible into the carcass, the angular distance between the screwdriver bits stored in the carcass in the tangential direction is small, but doing so will result in the removal and insertion of the screwdriver bit. The movement becomes difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a screwdriver driver having a cartridge for a screwdriver bit, wherein the screw driver can be easily taken out and placed in the removal position with the same amount of storage of the cartridge.

This can be achieved by using a screwdriver handle having the features of the first item of the patent application.

The contents of the auxiliary patent application are various advantageous embodiments of the invention.

In the screwdriver handle of the present invention, the cylindrical cavity in the handle is for storing the screwdriver bit. The screwdriver bit can be placed in a screwdriver bit holder and the screwdriver bit can be pushed from the handle cavity to a removal position through a sleeve that can move axially on an inner rod. The screwdriver bit holder has a screwdriver bit holder that is disposed on the inner end of the sleeve and can accommodate the screwdriver bit and its terminal end. The screw driver head is thus placed in the storage position on the inner front end of the sleeve while the screwdriver bit abuts axially parallel to the circumference of the sleeve. In this way, the screwdriver bit can be set with the smallest angular distance between each other to make full use of the cavity for accommodating the screwdriver. When the sleeve is moved from the inside of the handle to the removal position, the screwdriver bit is located at the position of the screwdriver bit. The free end will extend outward from the sleeve. Thus, a radial distance is formed between the circumference of the sleeve and the free end of the screwdriver bit, and the angular distance between the free ends of the screwdriver bits is also increased. Therefore, the user can easily grasp the screwdriver bit with a finger and take it out or put it into the carcass.

In order to advance the screwdriver bit to the removal position, it is preferred to force the driver of the screwdriver bit into the cavity. This will force the screwdriver bit to be pushed when the screwdriver bit holder is pushed to the removal position. The forced guiding device may be a mechanical groove guide or a cam guide, which functions to pull out or press the screw driver head out at the end of the axial moving path to enter the removal position. . Preferably, the forced guiding is generated by the elastic pre-stressing, the action of the screw driver head of the screw driver head is abutted against the inner wall of the cavity, and the screw driver head is removed from the cavity outward, and When it is radially supported by the inner wall of the cavity, the screwdriver bit of the screwdriver bit is immediately swung outward.

According to an advantageous embodiment, the screwdriver bit holder has a receiving pocket which is distributed over the circumference of the sleeve, while the screwdriver bit can extend axially into the receiving pocket. The accommodating bag is rotatably disposed on the sleeve and is rotated outward by a spring force. For example, a spring force can be generated by an O-ring that surrounds the rotating rod of the receiving bag.

The rear end of the sleeve is provided with a cover for sealing the cavity of the handle body in the storage position and can be latched in this position. For example, a latching element can be provided on the cover, which latching element interacts with the latching element provided on the rear end of the rod in the storage position. Blocking element The piece may be a spring-acting stop hook and a corresponding stop flange. According to another embodiment, the cover with the stop element can be latched at the rear end of the handle body. For example, a stop arm can be arranged on the outside of the handle body, and the stop arm can be inserted into a ring groove of the cover by the spring force in the storage position, and can be pivoted away from the circumferential groove against the spring force to open the cover. In addition to this, there are a variety of other blocking methods to choose from, and these methods are within the reach of those skilled in the art.

10‧‧‧Handle body

10.1‧‧‧ front end

10.2‧‧‧Operation section

10.3‧‧‧ Coating

12‧‧‧Tool handle

14‧‧‧ bushing

16‧‧‧ Screwdriver head

18‧‧‧ cover

20‧‧‧ cavity

22‧‧‧ pole

24‧‧‧Sleeve

26‧‧‧stop flange

28‧‧‧Spool valve

30‧‧‧stop hook

32‧‧‧screw compression spring

34‧‧‧ disc

36‧‧‧ Screwdriver head receptacle

38‧‧‧ Bushings for the screwdriver head holder

40‧‧‧ disc bushing

42‧‧‧screw compression spring

44‧‧‧ accommodating bag

46‧‧‧ bottom

48‧‧‧Rotating rod

50‧‧‧Rip

52‧‧‧O-ring

54‧‧‧ Ring groove

56‧‧‧stop lever

58‧‧‧stop hook

60‧‧‧Conical compression spring

The present invention will be further described below in conjunction with the drawings and embodiments. among them:

Figure 1: Screwdriver handle in the storage position.

Figure 2: Screwdriver handle in the removal position.

Figure 3: Axial sectional view of the screwdriver handle in the storage position.

Fig. 4: A detailed enlarged view of Fig. 3.

Figure 5: Axial sectional view of the screwdriver handle in the removal position.

Fig. 6 is an enlarged view of a detail of Fig. 5.

Figure 7: A perspective detail view of the opened screwdriver handle in the storage position.

Figure 8: A perspective detail view of the opened screwdriver handle in the removal position.

Figure 9: A disc of the screwdriver head holder of the screwdriver handle is viewed from different angles.

Figure 10: Screwdriver for the screwdriver handle from different angles The head of the head of the screwdriver.

Figure 11: A variation of the screwdriver as shown in Figure 3.

Figure 12: This variation of the screwdriver is as shown in Figure 5.

The screwdriver handle shown in Fig. 1 has an elongated handle body 10 having a tool shank 12 on the axially forward end face of the handle body 10. A bushing 14 is provided on the free front end of the tool shank 12, and the drive end of the replaceable screwdriver bit 16 (also known as the Bits) can be placed in the bushing 14. The handle body 10 is a body for storing the screwdriver bit 16, and its rear axial end face is closed by the cover 18.

Figure 2 shows the screwdriver handle in the removal position. In this removal position, the screwdriver bit 16 is pushed back from the handle body 10 so that it can be taken out or placed.

Figures 3 through 10 show the structure of the screwdriver handle one by one.

The handle body 10 is a plastic die casting made by three die casting steps. The rear end of the tool shank 12 is cast into the front end section 10.1 of the handle body. The axially elongated operating section 10.2 is attached to the terminal section 10.1, and the operating section 10.2 is for the user to hold to operate the screwdriver. The operating section 10.2 preferably has an outer coating 10.3 to improve the hand of the handle body 10. Within the handle body 10 is an axially elongated cavity 20 that is shaped like a straight cylinder that is coaxial with the handle body 10. The front inner end of the cavity 20 is sealed by the front end section 10.1 of the handle body 10. Circle of cavity 20 The circumferential surface is constituted by the operating section 10.2 of the handle body 10. The cavity 20 is open at the rear end face of the handle body 10 and can be sealed by the cover 18.

The cavity 20 has a rod 22 coaxial therewith, such as a metal rod. The front end of the rod 22 is cast into the terminal section 10.1 of the handle body 10 and is axially flush with the tool shank 12. The length of the rod 22 is substantially equal to the axial length of the cavity 20 such that the rear end of the rod 22 substantially coincides with the open rear end of the cavity 20. The rod 22 has an axially movable sleeve 24. The sleeve 24 is preferably constructed of a length of metal tube and has an inner cross section that is substantially the same as the outer section of the rod 22. The cover 18 is secured to the rear end of the sleeve 24, for example, the cover 18 is a plastic piece that is cast onto the rear end of the sleeve 24. In order to close the screwdriver handle in the storage position shown in Figures 1 and 3, the cover 18 can be locked to the handle body 10. For this purpose, a radially projecting stop flange 26 is fastened to the rear free end of the rod 22. Within the cover 18 is a spool 28 that is movable laterally in the radial direction. The slide valve 28 has a stop hook 30 on its inner side facing the cavity 20 for fixing the stop flange 26 of the rod 22 from the rear in the storage position to secure the cover 18 to the handle body 10. on. The spool 28 is urged by a screw compression spring 32 to the latched position. When the cover 18 and the sleeve 24 are pushed to the storage position shown in Figures 1 and 3, the stop hook 30 will slowly pass through the stop flange 26, wherein the initial section tilt will act and the spool 28 will be actuated. Push in the opposite direction of the spring force of the screw compression spring 32. Once the stop hook 30 grips the stop flange 26 from behind, the screw compression spring 32 will press the spool 28 back, causing the stop hook 30 to be inserted behind the stop flange 26. To open the cover 18, the user can push the slide valve 28 to the side opposite to the spring force of the screw compression spring 32, so that the stop hook 30 The cover 18 can be separated from the handle body 10 by being separated from the stop flange 26 in the radial direction.

On the front end of the sleeve 24 there is a screwdriver head holder which functions to secure the screwdriver bit 16 to the sleeve 24 so that the screwdriver bit 16 can enter the cavity 20 with the sleeve 24 to the storage position, and together It is removed from the cavity 20 into the removal position. The screwdriver bit holder has a disc 34 as shown in Fig. 9, and has a screwdriver bit holder 36 as shown in Fig. 10.

The screwdriver bit holder 36 and the disc 34 are both plastic die castings. The screwdriver bit holder 36 has a bushing 38 that is secured to the front end of the sleeve 24. The disc 34 is shaped like a flattened annular sheet and has a bushing 40 coaxial therewith. The bushing 40 of the disc 34 is secured to the bushing 38 of the screwdriver bit holder 36 so that the disc 34 is also fixedly coupled to the front end of the sleeve 24. The outer diameter of the disk 34 is substantially equal to the inner diameter of the cavity 20 so that the disk 34 can move axially freely within the cavity 20 with the sleeve 24. A screw compression spring 42 is disposed between the disc 34 and the front end section 10.1 of the handle body 10. The screw compression spring 42 is aligned with a journal of the terminal section 10.1 that surrounds the rod 22. The rear end of the screw compression spring 42 coaxially surrounds the bushing 40 of the disk 34 and is supported on the end face of the disk 34. In the storage position shown in Figures 3 and 4, the sleeve 24 and the disk 34 are entirely pushed into the cavity 20, thereby compressing and tensioning the screw compression spring 42. The sleeve 24 is fixed in the opposite direction of the spring force of the tensioned screw compression spring 42, thus closing the cover 18 by the spool 28 on the rod 22. When the latching of the cover 18 is released, the screw compression spring 42 presses the disc 34 and the sleeve 24, The axial direction is entered into the removal position shown in Figs. 4 and 5.

The screwdriver bit holder 36 has a number of receiving pockets 44 equal to the number of screwdriver bits 16 that need to be received. The accommodating pockets 44 are distributed on the circumference of the bushing 38 in such a manner as to be equally spaced apart from each other. In the present embodiment, the cartridge can accommodate six screwdriver bits 16, and thus has six receiving pockets 44.

The shape of the accommodating bag 44 is the same as that of the cylinder axially parallel to the bushing 38. The back side of the accommodating bag is open, and the shape of the inner cross section is the same as that of the driving end of the screwdriver bit 16, for example, a hexagon. The outer circumference of the receiving pocket 44 is open to the side facing the bushing 38. When the drive end of a screwdriver bit 16 extends into a receiving pocket 44, the receiving pocket 44 will wrap around more than half of the circumference of the screwdriver bit 16, but will not completely surround it. In the present embodiment, the receiving pocket 44 surrounds the end of the screwdriver bit 16 on five sides of the hexagonal section. Thus, the accommodating bag 44 allows the driving end of the inserted screwdriver bit 16 to be fixed in the accommodating bag 44 in a force-fitting manner. A bottom portion 46 is formed on the front axial end surface of the accommodating bag 44. The receiving pocket 44 is connected through a bottom 46 to a bushing 38 that is secured to the sleeve 24. The connection between the bottom 46 of the receiving pocket 44 and the bushing 38 constitutes a film hinge so that the rear open end of the receiving pocket 44 can be deflected from the bushing 38, i.e., can be deflected from the sleeve 24. A rotating lever 48 is formed on the front end surface of the bottom portion 46 of the housing bag 44. The rotating rod 48 projects axially outward from the bottom 46 and its free end turns to the outside. In the assembled state, the screwdriver bit holder 36 is located on the back surface of the disk 34 facing the cavity 20. The pivoting rod 48 of the screwdriver bit receptacle 36 axially passes through the slit 50 of the disk 34. At this In the present embodiment having six receiving pockets 44, the disk 34 has six slits 50 spaced apart from each other by the same angular distance, through which the rotating rods 48 of the receiving pockets 44 pass. On the front end face of the disc 34 facing away from the screwdriver bit holder 36, there is an O-ring 52 coaxial with the bushings 38, 40, wherein the O-ring 52 directs all of the screwdriver bit receptacles 36 from the disc 34 The outer protruding rotating rod 48 is surrounded. The elastic pre-stress of the O-ring 52 pulls the free end of the rotating rod 48 in the opposite direction of the bushing 40. Since the rotating lever 48 is supported on the disk 34 in the slit 50, the elastic pre-stress of the rotating lever 48 causes the receiving pocket 44 to generate a pre-stress toward the rotational direction of the sleeve 24.

When the latching of the cover 18 is released, the screw compression spring 42 presses the disc 34 with the screwdriver bit receptacle 36 against the open end of the cavity 20, causing the screwdriver bit receptacle 36 to reach Figure 5 and Figure 6 shows the removal position. The receiving pocket 44 of the screwdriver bit receptacle 36 will extend outwardly from the open rear end of the cavity 20 in this removal position until its rear end is pivoted away from the sleeve 24 by the action of the O-ring 52. . The accommodating bag 44 is pushed toward the sleeve 24 at an angle at this take-out position, so that the angular distance at which the accommodating pockets 44 are spaced apart from each other is also increased. In this position, the screwdriver bit 16 can be easily taken out from the accommodating bag 44, and the screwdriver bit 16 can be easily placed in the empty accommodating bag 44.

When the sleeve 24 is pressed against the cover 18 by the axial pressure in the opposite direction of the spring force of the screw compression spring 42, and thus pushed into the cavity 20 of the handle body 10, the screwdriver bit receiving portion 36 will enter the space inwardly. Cavity. Therefore, the receiving bag 44 and the inserted screwdriver bit 16 will reach the cavity 20 The extent of the cylindrical inner wall. The receiving pocket 44 and the screwdriver bit 16 are pressed against the sleeve 24 in the opposite direction of the elastic force of the O-ring 52 so as to abut against the circumference of the sleeve 24 in an axially parallel manner. If the sleeve 24 is pushed entirely into the cavity 20, the lid 18 will seal the open end of the cavity 20 and be locked to the stop flange 26 of the stem 22 via the slide valve 28. In this case, the screwdriver handle is located in the storage position shown in Figures 3 and 4.

Figures 11 and 12 show a variant embodiment of a screwdriver. The embodiment of the change is mainly derived from the embodiment shown in Figs. 1 to 10, and therefore the descriptions of Figs. 1 to 10 are also applicable to Figs. 11 and 12. The same reference numerals are used for FIGS. 11 and 12 as those of FIGS. 1 to 10.

Unlike the embodiment of Figs. 1 to 10, in the modified embodiment of Figs. 11 and 12, the cover 18 which seals the open rear end of the cavity 20 of the handle body 10 is The storage position cannot be locked on the pole 22, but can be locked on the rear end of the handle body 10. To this end, the cover 18 has a ring groove 54 at its circumferential edge adjoining the rear end of the handle body 10. On the outer circumference of the rear end of the handle body 10, there are two stopper rods 56 which are disposed in the radial direction. The stop levers 56 are axially parallel to each other and are received in corresponding notches on the outer circumference of the handle body 10, so that the outer circumference of the stop lever 56 is substantially flush with the outer circumference of the handle body 10. The stop lever 56 is a two-armed lever that is rotatably disposed in the notch. In order to be rotatably disposed in the notch, a hemispherical ring (not shown) is formed on both longitudinal sides of the stop lever 56, and the hemispherical rings are embedded on the opposite side of the notch. Corresponding spherical axis Tile (not shown). The stop lever 56 is a simple cast piece and is placed into the bearing pad together with the hemispherical ring when assembled. A stopper hook 58 is provided on the lever arm extending outward from the rear end edge of the handle body 10, and the stopper hook 58 is oriented in the direction of the central axis of the handle body 10. A conical compression spring 60 is disposed between the other end of the two-arm stop lever 56 that aligns the front end of the tool shank with the bottom of the notch of the handle body 10. The conical compression spring 60 impacts the two-armed stop lever 56 such that the stop hook 58 rotates inward toward the central axis of the handle body 10.

If the screwdriver bit body is moved to the storage position, the sleeve 24 and the cover 18 secured to the rear end of the sleeve 24 are pushed into the cavity 20 of the handle body 10. The front circumferential edge of the cover 18 is located on the rear circumferential edge of the handle body 10, wherein the inclination of the outer starting section on the circumferential edge of the cover 18 will cause the stop lever 56 to rotate outwardly in the opposite direction of the spring force of the conical compression spring 60. The stop hook 58 thus slides onto the outer circumference of the cover 18 and is inserted into the annular groove 54 of the cover 18 by the action of the conical compression spring 60. Thus the cover 18 is locked on the rear end of the handle body 10. The user can press the stopper arm 56 downwardly with the two fingers to press the lever arm opposite the stop hook 58 to open the body. Because of this, the conical compression spring 60 can be compressed to rotate the stop lever 56 toward the opposite direction of the spring force of the conical compression spring 60 to bring the stop hook 58 away from the annular groove 54. Thus, the cover 18 is opened, and the screw compression spring 42 can press the sleeve 24 and the screwdriver bit holder outward from the handle body 10.

It is of course also possible to replace the two aforementioned stop levers 56 arranged on the diagonal with a single stop lever 56 or more than two stop levers 56. However, the advantages of the two stop rods 56 arranged in the radial direction Yes, the user can operate the screwdriver handle by simply holding the handle body 10 with two fingers.

In addition to the use of the stop lever 56, the cover 18 can be latched to the handle body 10 by other means. For example, the lid 18 can also be locked to the rear end of the handle body 10 in the manner of a bayonet joint. In this case, the cover 18 is locked on the open end of the handle body 10.

Similarly, magnets of different polarities may be placed at offset angular positions on the edges of the sequentially positioned lid 18 and the open end of the handle body 10. At the rotational position of the cover 18, the cover 18 and the opposite magnetic poles of the handle body 10 are covered, so that the cover 18 is magnetically fixed in the latched position. If the cover 18 is unscrewed from this latched position, it is covered by the same magnetic poles that are mutually exclusive, thereby pressing the cover 18 from the end of the handle body 10 to the open state.

10‧‧‧Handle body

10.1‧‧‧ Terminal segment

12‧‧‧Tool handle

14‧‧‧ bushing

16‧‧‧ Screwdriver head

18‧‧‧ cover

20‧‧‧ cavity

22‧‧‧ pole

24‧‧‧Sleeve

26‧‧‧stop flange

28‧‧‧Spool valve

30‧‧‧stop hook

32‧‧‧screw compression spring

Claims (9)

A screwdriver driver handle having a body for storing a screwdriver, the handle having a handle body (10) having a front end and a rear end, wherein the handle body (10) includes a a tool shank (12) and a cylindrical cavity (20) formed in the coaxiality of the handle body (10), wherein the front end surface of the cavity (20) is sealed by the handle body (10), and the rear end thereof Opened on the rear end of the handle body (10), the handle body (10) further has a rod (22) coaxially disposed with the cavity (20), wherein the front end of the rod (22) is fixed to the handle body (10) On the inner end surface of the cavity (20) and extending to the open rear end of the cavity (20), the rod (22) is capable of guiding the sleeve (24) to move axially, the sleeve (24) There is a cover (18) placed on the rear end of the sleeve (24), and a screwdriver head frame disposed on the periphery of the sleeve (24), the screwdriver head frame is distributed along the circumference for a plurality of available a screwdriver bit (16), wherein in the storage state, a sleeve (24) on the rod (22) is inserted into the cavity (20), the screwdriver head frame is located in the cavity (20), and the The lid (18) seals the The open rear end of the cavity (20), and in the removed state, the sleeve (24) on the rod (22) is removed outwardly from the cavity (20) until the screwdriver bit head is exposed and is used for The screwdriver bit (16) is removed and placed from the side, and is characterized in that: the screwdriver head frame has a screwdriver bit receiving portion (36) disposed on the front end of the sleeve (24), the screwdriver The terminal of the head (16) can be placed in the screwdriver bit holder (36), and when in the stored state, the screwdriver bit holder (36) abuts the sleeve (24) in an axially parallel manner Fixing the screwdriver bit (16), and in the removal state, extending the free end of the screwdriver bit (16) from the sleeve (24) The screwdriver bit receiving portion (36) has a circumferentially disposed receiving pocket (44), wherein each of the receiving pockets can accommodate an axially inserted screwdriver bit (16); The containment pocket (44) abuts the sleeve (24) within the cavity (20) and pivots away from the sleeve (24) as it exits the cavity (20). A screwdriver driver handle according to claim 1, wherein the screwdriver bit holder (36) is forcibly introduced into the cavity (20). A screwdriver driver handle according to the first aspect of the invention, wherein the accommodating bag (44) is rotatably disposed on the sleeve (24) and elastically stretched in a rotational direction. A screwdriver driver handle according to claim 3, wherein the receiving bag (44) is rotatably disposed on the sleeve (24) via a film hinge and is stretched by a spring member to a rotational direction. A screwdriver driver handle according to claim 4, wherein the receiving bag (44) has a rotating lever (48), and the spring member is an O-ring (52) coaxial with the sleeve (24). The O-ring (52) surrounds all of the rotating rods (48) of the receiving bag (44). A screwdriver driver handle according to claim 5, wherein the rotation lever (48) passes through a slit (50) of a disc (34) provided on the sleeve (24), and at the slit (50) The middle is supported on the disc (34). A screwdriver handle according to any one of claims 1 to 6, wherein the cover (18) is releasably latched on the rear end of the handle in the storage position. A screwdriver handle as claimed in claim 7 wherein the cover The child (18) has a first blocking element (28, 30), and the first blocking element (28, 30) cooperates with the second blocking element (26) disposed on the rear end of the rod (22) in the storage position . A screwdriver driver handle according to claim 7 wherein a locking member (54) is provided on a circumferential edge of the cover (18), and the blocking member (54) is disposed in the storage position and in the handle body (10) The blocking elements (56, 58, 60) on the rear end cooperate.