TWI680841B - screwdriver - Google Patents

Abstract

The invention relates to a screwdriver with a handle and a first shaft, wherein the handle has a first handle part which is connected to the first shaft for rotation therewith and a second handle part which is connected releasably to the first handle part, wherein the second handle part is connected to a second shaft for rotation therewith.

Description

screwdriver

The invention relates to a screwdriver with a handle and a first shaft.

Conventional screwdrivers with a handle and a shaft are known.

However, it is known that conventional screwdrivers with a handle and a shaft cannot be used flexibly or save space. To achieve this, the present invention intends to provide a screwdriver that can be used flexibly and saves space.

For this purpose, according to the present invention, a screwdriver having the characteristics of claim 1 is provided. The advantageous development of the invention is mentioned in the scope of the accompanying patent application.

The screwdriver according to the present invention has a handle and a first shaft member, wherein the handle has a first handle portion connected to the first shaft member for rotation therewith and releasably connected to the first handle portion A second handle portion, wherein the second handle portion is connected to a second shaft member to rotate therewith, and the second shaft member is disposed in the first handle portion at least in several sections so that the two The two handle parts are releasable when connected to each other.

The screwdriver according to the invention therefore combines two screwdrivers in one tool, that is, firstly a conventional screwdriver with a first shaft member and a handle, which consists of interconnected handle parts, and consists only of The second handle part and the second shaft member constitute a second screwdriver. With the present invention, the two tools can therefore be combined in an amazingly simple way In one tool. Therefore, resources can be saved during production. During use, the screwdriver according to the invention saves space and weight. In the connected state, the second shaft is plugged (for example) into the first handle portion, so that the combination of the two screwdrivers cannot be easily seen.

In one development of the invention, the first handle portion and the second handle portion and/or the first shaft member and the second shaft member have coupling members that cooperate with each other to enable the first in the connected state The handle portion and the second handle portion and/or the first shaft member and the second shaft member are coupled to rotate together.

By providing such a coupling member, in the connected state of the first handle part and the second handle part and/or in the connected state of the first shaft part and the second shaft part, surround the The relative rotation of one of the longitudinal axes of the two handle parts is no longer possible. Therefore, in the connected state, the screwdriver can be used as a conventional single-piece screwdriver. A rotationally fixed coupling can take place on the two shafts and/or the two handle parts for a suitable configuration. The coupling member may also be provided on the handle portions, for example, engaged with one of the hexagonal protrusions in one of the mating hexagonal recesses on the other handle portion. In one development of the invention, the second shaft is shorter than the first shaft.

For example, the second shaft member and the second handle portion are designed as a device called a "folder (Knirps)" or "stubby". These are screwdrivers that have a very short handle and a very short shaft and are provided to work in a space-constrained surrounding environment. Since the second shaft member is shorter than the first shaft member, the portion of the second shaft member that protrudes beyond the second handle portion can be easily accommodated in the first handle portion. It is therefore possible that in the connected state of the two handle parts, only the first shaft member and the two handle parts are visible from the outside. At a glance, it is impossible to see that a screwdriver with a second shaft is also integrated in the screwdriver. Between the first handle part and the second handle part In the connected state, the screwdriver can also be used as a conventional screwdriver, that is, it is not necessary to consider the second short shaft member during operation.

In one development of the invention, in the connected state of the first handle portion and the second handle portion, the first shaft member and the second shaft member are aligned with each other.

This promotion can thus be designed (for example) in the design of a rotationally symmetrical handle part. There is no tactile sense when the screwdriver is used in the connected state of the first handle part and the second handle part or when only the screwdriver with the second handle part and the second shaft member is used Substantial difference. The operator always grasps the second handle part and optionally the first handle part.

In one development of the present invention, the first shaft member has a front end and a rear end, the front end is provided with a blade or a receiving device for a screwdriver bit, and the second shaft member has a front end and A rear end, the front end is provided with a blade or a receiving device for a screwdriver bit, and in the connected state of the first handle part and the second handle part, the front end of the second shaft member is connected To the rear end of the first shaft member to rotate with it.

Torque can thus be transmitted between the second handle part and the first handle part via the second shaft part, which is coupled to the first shaft part via a suitable coupling member for rotation therewith. Therefore, there is only a very low demand for the connection of one of the two handle parts, because the connection of the two handle parts itself does not necessarily transmit a torque. Therefore, the connection of the two handle parts can be designed in a simple and cost-effective manner as a latch connection, magnetic connection or otherwise as a simple plug-in connection.

In one development of the invention, the front end of the second shaft member has a recess for receiving a screwdriver bit, and the rear end of the first shaft member is driven into a structure with one of a screwdriver bit Corresponding to one way to design.

In this way, the coupling member for the rotationally fixed coupling of the second shaft member to one of the first shaft members can be coupled to the second shaft member with a screwdriver bit in a very simple manner and precisely The recess in the front end is designed in the same way.

In one development of the present invention, the first handle portion and the second handle portion and/or the first shaft member and the second shaft member have mutually-retaining holding members to hold the first handle portion on the first Two handle parts and/or hold the first shaft on the second shaft.

These holding members may be designed as, for example, magnets and/or magnetizable components. In the connected state, the first handle part and the second handle part are held on each other by the holding members, and thus the first handle part and the second handle part during use of the screwdriver It will not unintentionally disassemble from each other. However, in addition to the rotationally fixed connection achieved by the coupling member, the holding members can also hold the first shaft member and the second shaft member on each other in the axial direction.

In one development of the invention, the holding members are designed as latch members.

These holding members are used for axial fastening. A latch member that is releasable without a tool is advantageous here. In one development of the invention, the holding members have at least one magnet.

By means of magnets, the two handle parts and the two shafts can be coupled quickly, simply and also in such a way that they can be released from each other again, wherein the magnets preferably enable tightening against axial forces.

In one development of the invention, the holding members have at least one spring coil.

For example, a spring ring can be disposed in a groove on the second shaft, And in the connected state, it can be engaged in a fitting groove on the first shaft member. It would also be possible in a similar way to couple the two handle parts by a spring coil.

In one development of the invention, the holding members have at least one rubber ring.

A coupling that is quick, simple to implement and also releasable from each other by a rubber ring is possible. At least one rubber ring is advantageously used to couple the two handle parts. For example, the rear side of the first handle portion has a recess, and the rubber ring is then received in a groove on the outer edge of the recess. The front end of the second handle portion has a fitting groove for the rubber ring. If the second handle part is now pressed into the recess on the rear side of the first handle part, the rubber ring constitutes a resistance. As soon as the resistance is overcome, the rubber ring slides into the recess at the front end of the second handle part, and the first handle part and the second handle part are thus coupled to each other. At the same time, the front end of the second shaft member can be coupled to the rear end of the first shaft member for rotation therewith. The rubber ring therefore only needs to exhibit a coupling force in the axial direction. In addition, the rubber ring can also be used as a stopper of a carrier of the screwdriver bit, and the carrier is disposed in the recess of the first handle portion.

In one development of the invention, the first handle portion has at its rear end a recess for receiving a first carrier of a screwdriver bit.

The screwdriver bit can therefore be accommodated in the first handle part and then be arranged in the handle part in a space-saving manner and can be removed during use of the screwdriver. If a plurality of screwdriver bits are arranged in the first handle part, the screwdriver can be used to screw in or loosen different screws.

In one development of the invention, the first carrier is extensiblely arranged in the recess of the first handle portion.

For example, the first carrier is locked in an extended position, wherein the second shaft and the first carrier are still connected in an extended position. For example, the second shaft can be separated from the first carrier only after overcoming a predefined latching force. Since the first carrier can protrude from the first handle part, it is possible to configure the screwdriver bits so as to be easily accessible in the extended state.

In one development of the invention, the first carrier has a recess, and the second shaft can be pushed into the recess at least in several sections.

Therefore, the second shaft can be arranged in the first handle part in a space-saving manner and despite the presence of the first carrier when the two handle parts are connected to each other.

In one development of the present invention, the first carrier and the second shaft member have latch members that cooperate with each other.

If the two handle parts are pulled away from each other, the second shaft member thus causes the first carrier to protrude from the first handle part. However, the second shaft remains connected to the first carrier as long as a predefined latching force is not overcome. In the extended state of the first carrier and when the second shaft is still connected to the first carrier, the screwdriver bits in the first carrier are easily accessible. After removing a screwdriver bit, it is only possible to push the two handle parts together again and it is not necessary to screw the second shaft into the second carrier. The replacement of one of the drill bits on the screwdriver according to the invention can therefore take place quickly and simply. Only when the second shaft member is intended to receive a screwdriver bit, the second shaft member is pulled out of the recess of the first carrier under the condition of overcoming the latching force, and can then be used to provide a screwdriver bit or Use directly.

In one development of the invention, the second handle part has at its rear end a recess for receiving a second carrier of a screwdriver bit.

The screwdriver bit can thus also be arranged in the second handle part.

In one development of the present invention, the second shaft member extends into the recess of the second handle portion, and the second carrier is disposed on the second shaft member in a displaceable manner.

The second carrier can therefore be fastened on the second handle part, and in the extended position, the screwdriver bits in the second carrier can however be accessed very easily.

In one development of the invention, the second carrier and the second shaft member and/or the second handle portion are provided with latch members that cooperate with each other.

Therefore, the second carrier can be extended from the second handle part only after overcoming a predefined latching force. This prevents the second carrier from inadvertently protruding from the second handle portion during use of the screwdriver.

10‧‧‧screwdriver

12‧‧‧The first shaft/shaft

14‧‧‧First handle part/handle part

16‧‧‧Second handle part/handle part

18‧‧‧ Front

20‧‧‧Recessed part/Hexagon socket/recessed part

22‧‧‧Second shaft/second shaft part/second short shaft/short second shaft/short shaft

24‧‧‧ Front

26‧‧‧Magnet

28‧‧‧Cap

30‧‧‧back

32‧‧‧Magnet

34‧‧‧Spring coil

36‧‧‧Cylinder protrusion/projection

38‧‧‧recess

40‧‧‧carrier/first carrier

42‧‧‧recess/recess

44‧‧‧Second carrier/carrier

46‧‧‧Screwdriver bit

50‧‧‧circle

52‧‧‧Retainer

56‧‧‧Central recess/recess

58‧‧‧Central recess

60‧‧‧Sheath

62‧‧‧Annular recess

100‧‧‧screwdriver

112‧‧‧The first shaft

114‧‧‧The first handle part

116‧‧‧The second handle part

122‧‧‧Second shaft/shaft

128‧‧‧Cap

138‧‧‧recess

140‧‧‧ First carrier/carrier

142‧‧‧recess

144‧‧‧Second carrier/carrier

160‧‧‧Sleeve end stop/ring sleeve

170‧‧‧Compression spring/spring

172‧‧‧Rubber ring/O ring

174‧‧‧ surround groove/groove

176‧‧‧groove

178‧‧‧ surround the shoulder

180‧‧‧ surround groove/groove

182‧‧‧Rubber ring/O ring

184‧‧‧Cooperate recess/recess

186‧‧‧lower end

188‧‧‧Latch protrusion

190‧‧‧Latch protrusion

F‧‧‧force

Additional features and advantages of the present invention appear from the scope of the patent application and the following description of preferred embodiments of the present invention in conjunction with the drawings. The individual features of the various embodiments can be combined with one another in any desired manner without exceeding the scope of the invention. This also applies to combining individual features with each other without having additional features (in conjunction with which the individual features are illustrated or shown). In each drawing: FIG. 1 shows a view of a screwdriver according to the invention obliquely from above, and FIG. 2 shows a second handle part having a second shaft member, the second handle part forming the screwdriver of FIG. 1 Part 3, FIG. 3 shows a first handle part having a first shaft member, the first handle part forms a part of the screwdriver of FIG. 1, FIG. 4 shows a cross-sectional view of the screwdriver of FIG. 1, FIG. 5 is inclined from above Shows one view of the screwdriver of Figure 1, which is not illustrated The second handle part, FIG. 6 shows a view of the screwdriver of FIG. 1 obliquely from above, in which the second handle part has been only partially omitted, and therefore one of the carriers of the screwdriver bit in the second handle part can be seen, FIG. 7 A view of the screwdriver of FIG. 1 is shown obliquely from above, in which the first handle portion and the second handle portion have been partially omitted, and therefore the first carrier and the second carrier of the screwdriver bit can be seen, FIG. 8 Only one diagram showing two carriers of the screwdriver bit from FIG. 7 is shown, and FIG. 9 shows a schematic view of one of the second handle parts when the second shaft member is in an extended state of one of the second carriers of the screwdriver bit Cross-sectional view, FIG. 10 shows a cross-sectional view of the screwdriver of FIG. 4 in a state in which the second handle part having the second shaft member is separated from the first handle part, FIG. 11 shows from the side in the pulled-out state according to the present invention A partial cross-sectional illustration of a screwdriver, FIG. 12 shows a cross-sectional view of the second handle part of the screwdriver of FIG. 11, FIG. 13 shows a cross-sectional view of the second handle part of FIG. 12 with the carrier extended, FIG. 14 A partial cross-sectional side view of the screwdriver of FIG. 11 is shown in the pushed state, and FIG. 15 is a cross-sectional view of the screwdriver of FIG. 11 in the pulled-out state.

Figure 1 shows a screwdriver 10 according to the invention obliquely from above. The screwdriver has a first shaft member 12, a first handle portion 14 and a second handle portion 16. The first shaft member 12 is anchored in the first handle portion 14 to rotate with it, and in the illustrated embodiment, has a depression at its front end 18 (which is located at the bottom on the left in FIG. 1) Department 20 (In the form of a hexagon socket) one of the forms is driven into the structure. The hexagon socket 20 is provided for receiving a device called a screwdriver bit. After a screwdriver bit is inserted into the recess 20, a screwdriver 10 (for example) can be used to screw in a screw.

The two handle portions 14, 16 are not integrally formed with each other, but are connected to each other in a releasable manner, and are rotationally fixed relative to each other in the connected state.

FIG. 2 shows the second handle portion 16 with the second shaft member 22 in a state of being removed from the first handle portion 14.

FIG. 3 shows the first handle portion 14 with the first shaft member 12 without the second handle portion 16.

As can be seen in FIG. 2, the second handle portion 16 is provided with the second shaft member 22. The second shaft member 22 is significantly shorter than the first shaft member 12, but like the first shaft member 12, the second shaft member 22 has a recess 20 at its front end 24 for receiving a screwdriver bit. The recess 20 at the front end of the first shaft member 12 and the recess 20 at the front end of the second shaft member 22 are formed exactly the same as each other. The second handle portion 16 together with the second shaft member 22 form a short screwdriver that is completely sufficient, which is also called a "folding member" or "short handle".

In the connected state of the first handle portion 14 and the second handle portion 16, the second shaft member 22 cannot be seen because it is assembled in the first handle portion 14. In the connected state of the first handle portion 14 and the second handle portion 16, the two handle portions 14, 16 are coupled to each other to rotate together. For using the screwdriver 10 of FIG. 1, it is therefore possible to grasp the first handle portion 14 or the second handle portion 16 or the two handle portions 14, 16, which is not important for transmitting torque to the first shaft member 12.

Referring to FIG. 2, the second handle portion 16 is provided with two magnets 26 in its end surface facing the second shaft member 22. The first handle portion 14 is similarly provided with two magnets 26 The dry magnet and/or a magnetizable assembly, and therefore in the connected state of FIG. 1, the two handle parts 14, 16 are also held on each other by the action of the two magnets 26. The magnet 26 thus forms a holding member for fastening the two handle portions 14, 16 to each other against forces acting in the axial direction.

The rear side of the second handle portion 16 is provided with a cap 28 that can be released from the second handle portion 16, as also explained below.

FIG. 4 is a diagram illustrating the screwdriver 10 of FIG. 1 in a cross-sectional view. The first handle portion 14 and the first shaft member 12 connected to the first handle portion 14 for rotation therewith can be seen. In addition, the second handle portion 16 and the second shaft member 22 connected to the second handle portion 16 for rotation therewith can be seen. For example, the first shaft member 12 is injection molded into the first handle portion 14 as an insert in a known manner and the second shaft member 22 is fastened to the second handle portion 16 in the same manner to rotate with it .

In addition, as can be seen in the cross-sectional view of FIG. 4, in the connected state of the two handle portions 14, 16, the front end 24 of the second shaft member 22 is connected to one rear end 30 of the first shaft member 12 due to the following fact : The rear end 30 of the first shaft member 12 is pushed into the recess 20 at the front end of the second shaft member 22. For this purpose, the rear end 30 of the first shaft 12 is configured like a drive side of a screwdriver bit (ie, generally cylindrically) with a profile in the form of a regular hexagon or octagon. In addition, a magnet 32 is disposed at the base of the recessed portion 20 in the second shaft member 22. As in the case of a screwdriver bit, the magnet holds the rear end 30 of the first shaft member 12 in the recessed portion 20. The magnet 32 thus forms a holding member for axial tightening, and the recess 20 and the rear end 30 form a coupling member for rotationally fixed connection. One of the rear ends 30 of the first shaft member 12 is additionally tightened by a spring ring 34. The spring ring 34 is disposed on the inner circumference of the recess 20 and is engaged with the rear end 30 in the pushed-in state of the rear end 30 One fits around the groove. Therefore, the spring The ring 34 also forms a holding member for axial fastening.

In other words, the rear end 30 of the first shaft member 12 has exactly the same configuration as the output end after a screwdriver bit, and the screwdriver bit is therefore usually inserted into a bit holder. The recess 20 in the front end of the second shaft member 22 is configured exactly the same as the driving recess for one of the screwdriver bits.

As already explained, both the first handle portion 14 and the second handle portion 16 each have two magnets 26. In the second handle portion 16, the magnet 26 is disposed in the end surface of the second handle portion 16, the end surface facing the first handle portion 14, and in the first handle portion 14, two magnets 26 are disposed facing The second handle portion 16 is in the rear end surface. Of course, instead of four magnets 26, a magnet and a magnetizable component may also face each other in each case.

The two handle portions 14, 16 are therefore first coupled to each other via the front end of the second shaft 22 and the rear end of the first shaft 12 and also via the magnet 26. Plugging the rear end 30 of the first shaft member 12 into the recess 20 at the front end of the second shaft member 22 ensures a rotationally fixed connection of one of the two handle portions 14, 16 on each other. The magnet 26 ensures that one of the two handle portions 14, 16 is additional but can be easily separated for fastening. The magnet 26 in particular ensures that the mutually facing end surfaces of the two handle portions 14, 16 remain in contact with each other, and therefore, in the connected state, the mutually facing end surfaces of the handle portions 14, 16 do not move relative to each other. This is particularly important so that during the use of the screwdriver 10, it does not give the impression of being a tool that deforms in the hand and therefore has a weak effect.

In addition, the second handle portion 16 has a cylindrical protrusion 36 that is concentrically arranged with respect to the second shaft member 22 and emerges from the front end surface of the second handle portion 16, see also FIG. 2. This protrusion 36 extends into a fitting recess at the rear end of the first handle portion 14. Moreover, this engagement in the recess in the one of the first handle portions 14 via the protrusion 36, the two handle portions 14, 16 are such that in the connected state, the optics of an integral handle appear And one of the tactile impressions is fastened to each other. The upper ends of the protruding portion 36 and the recessed portion 38 may also have a hexagonal shape matching each other, and in the inserted state, they can then be used as coupling members for rotationally fixed coupling because they are engaged with each other .

In addition, as can be seen in the cross-sectional view of FIG. 4, one of the first carriers 40 for receiving a plurality of screwdriver bits is disposed in the recess 38 in the first handle portion 14, the recess appears from the rear end surface of the first handle portion 14. The first carrier 40 is disposed in the recess 38 in an extendable manner, which is also explained below.

In addition, it can be seen that the second handle portion 16 also has a recess 42 that emerges from the rear end surface of the second handle portion 16. A second carrier 44 for receiving a screwdriver bit is disposed in the recess 42. The second carrier 44 may protrude from the rear end of the second handle portion 16 together with the cap 28, see also FIG.

In the cross-sectional view of FIG. 4, a screwdriver bit 46 (schematically illustrated) is disposed in the second carrier 44.

The screwdriver 10 is therefore designed as a device called a drill cartridge screwdriver, because its handle has two carriers 40, 44 which can each be equipped with a screwdriver drill bit 46.

The illustration of FIG. 5 shows the screwdriver 10 of FIG. 1 in which the first handle portion 14 is not illustrated. It can be seen that the rear end of the first shaft member 12 has the shape of a cylinder, and the cylinder has a cross section in the form of a regular hexagon. In other words, the rear end 30 of the first shaft member 12 has the form of an output end of a screwdriver bit. As can be easily seen in FIG. 5, in the connected state of the two handle portions 14, 16, the rear end 30 of the first shaft member 12 is inserted into the recess 20 at the front end of the second shaft member 22 and Therefore, the two handle parts 14, 16 and/or the two shaft members 12, 22 are connected to each other to rotate together. As in the case of the usual screwdriver bit, the two shafts The connection of 12, 22 is actually fixed in a rotating manner, but clearly swings when a force is applied perpendicular to the longitudinal central axis. However, in order to prevent the two handle portions 14, 16 from swinging relative to each other, as already explained, a cylindrical protrusion 36 provided in the front end surface of the second handle portion 16 and a fitting recess in the rear end of the first handle portion 14 are provided 38. The magnet 26 is also provided.

The illustration of FIG. 6 shows the screwdriver 10 of FIG. 1 in which the first handle portion 14 has been omitted, but the first carrier 40 guided in a displaceable manner in the recess 38 of the first handle portion 14 has not been omitted (see FIG. 4). The first carrier 40 is guided here in a displaceable manner in the axial direction in the recess 38 of the first handle portion 14 by the ring 50. The first carrier 40 has a central through-bore, and the second shaft member 22 is pushed into the central through-bore in the connected state of the two handle portions 14, 16, see also FIG. The first carrier 40 itself is disposed in the recess 38 in a displaceable manner, see FIG. 4, and can extend upward from the state of FIG. 4. However, even in the extended state of the first carrier 40 (which is illustrated in FIG. 10 ), a circle 50 at the front end of the first carrier 40 remains in the recess 38 and thus prevents the first carrier 40 from A handle portion 14 is completely pulled out. As can be seen in FIG. 6, the first carrier 40 has a plurality of holders 52, and a screwdriver bit can be inserted into each of the holders 52. If the first carrier 40 (see FIG. 10) is pulled out from the first handle portion 14 to such an extent that only the ring 50 is still arranged in the recess 38 in the first handle portion 14, the holder 52 can be accessed in a very simple manner The screwdriver bit.

The illustration of FIG. 7 shows the screwdriver 10 of FIG. 1, in which the two handle portions 14, 16 have been omitted. The first shaft member 12, the second shaft member 22, the first carrier 40, and then the second carrier 44 connected to the cap 28 can also be seen. The second carrier 44 is also provided with a plurality of holders for inserting screwdriver bits 46. If the cap 28 and the second carrier 44 are protruded from the rear end of the second handle portion 16, see FIG. 9, the screwdriver bit 46 in the second carrier 44 can be accessed in a simple manner.

The illustration of FIG. 8 shows only two carriers 40, 44. It can be easily seen that in the extended state of the carrier 40, the screwdriver bit 46 can be easily accessed radially from the outside.

In the second carrier 44, a central recess 56 can be seen, and the rear end of the second shaft member 22 is pushed into the central recess 56. During the extension of the second handle portion 16, the second carrier 44 can thus be displaced on the rear end of the second shaft member 22.

The first carrier 40 also has a central recess 58. Referring to FIG. 4, the front end of the second shaft 22 is pushed into the central recess 58.

The illustration of FIG. 9 shows a cross-sectional view of the second handle portion 16 having the second shaft member 22 in a state where the second carrier 44 protrudes from the recess 42 in the second handle portion 16. The second carrier 44 is extended together with the cap 28. The rear end of the second shaft member 22 slides here in the recess 56 in the second carrier 44 until the other end of the second carrier 44 (which is located on the left in FIG. 9) hits the rear end of the second shaft member 22 Until one of the sheath 60. The sheath 60 forms an end stop and ensures that the second carrier 44 is snapped onto the second shaft 22 in a catching manner (except in a displaceable manner). It can be inferred from FIG. 9 that in the fully extended state of the second carrier 44 as shown, the screwdriver bit 46 can be easily accessed. The force required to extend the second carrier 44 from the second handle portion 16 and the associated reaction force are indicated by the letter F and an arrow, respectively.

For the assembly of the second handle portion 16, first, the second carrier 44 is pushed onto the rear end of the second shaft member 22 without the cap 28. Then, the sheath 60 is inserted onto the rear end of the second shaft member 22. The second carrier 44 is then fastened to the second shaft member 22 in a displaceable manner (except in a catching manner). Subsequently, the cap 28 is placed on the other end of the second carrier 44 (which is located on the right in FIG. 9 ). The second carrier 44 can now be moved from the fully extended position illustrated in FIG. 9 to a fully pushed-in position in which the screwdriver bit 46 is Fully hidden and an upper side of the cap 28 forms part of the surface of the second handle portion 16.

FIG. 10 shows the screwdriver 10 of FIG. 1 in a state in which the first carrier 40 is fully extended from the first handle portion 14. As already explained, even in the fully extended state, the loop 50 of the first carrier 40 remains inside the first handle portion 14 and thus fastens the first carrier 40 on the first handle portion 14 in a catching manner.

The second handle portion 16 and the second shaft member 22 in a state of being removed from the first handle portion 14 are illustrated in FIG. 10.

In order to connect the two handle portions 14, 16 again, the front end of the second shaft member 22 is inserted into the central recess of the first carrier 40 and then the front end of the second shaft member 22 is placed on the first handle portion 14 in FIG. Displace in the downward direction. The front end of the second shaft member 22 thus slides into the first carrier 40 until the upper end of the first carrier 40 in FIG. 10 hits the outer end surface of the protrusion 36 on the second handle portion 16. If the second handle portion 16 is then further pressed in the direction of the first handle portion 14, the carrier 40 is pushed into the recess 38 in the first handle portion 14. During the further process, the rear end 30 of the first shaft member 12 enters the recess 20 at the front end of the second shaft member 22 until reaching the fully pushed-in position of the first carrier 40 (illustrated in FIGS. 4 and 1) . In this fully pushed-in position, referring to FIG. 4, the ring 50 on the first carrier 40 is arranged in an annular recess 62 in the first handle portion, which recess makes the recess 38 be before the first end of the first shaft member 12 Continue in the direction. Alternatively, in the pushed-in state, the carrier 40 does not abut the second handle portion 16, but only the second shaft portion 22.

Regarding the present invention, a screwdriver 10 having a long first shaft member 12 is provided. The screwdriver 10 can first be used as a screwdriver of a normal size in the state of FIG. 1. If the second handle portion 16 having the second shaft member 22 is separated from the first handle portion by comparison, the second handle portion 16 of the short second shaft member 22 can also be used as a fully sufficient screwdriver child. These screwdrivers with a short handle and a short shaft member 22 are also known as a "short handle" or "folding member" and are provided for working at almost unreachable points. The two carriers 40, 44 for configuring the screwdriver bit are provided in the handle of the screwdriver 10, and therefore the screwdriver 10 according to the present invention is designed as a device called a drill bit screwdriver. The two carriers 40, 44 of the screwdriver bit can be accessed in a simple manner due to the fact that the carriers 40, 44 extend from the associated handle portions 14, 16 respectively. The two carriers 40, 44 are snapped onto the respective handle portions 14, 16 in a catching manner. By combining two screwdrivers in a single tool, the screwdriver according to the invention thus saves resources in production and saves space and weight in use.

FIG. 11 shows an additional screwdriver 100 according to the present invention in partial section. The screwdriver differs from the screwdriver 10 of FIGS. 1 to 10 only in the coupling manner of the first handle portion 114 and the second handle portion 116 and the configuration and guidance of the first carrier 140 in the first handle portion 114. Therefore, only the parts different from the screwdriver 10 of FIGS. 1 to 10 are described below.

On its back side facing away from the first shaft member 112, the first handle portion 114 is provided with a recess 138, which can push the second shaft member 122 of the second handle portion 116 into the recess 138. The front end of the second shaft 122 is provided with a recess for receiving a screwdriver bit, and the other end of the first shaft 112 (which protrudes into the recess 138) is provided with one of the screwdriver bits at its free end to drive in structure. When the second handle part 116 and the second shaft part 122 are plugged into the recess 138, the second handle part 116 and the second shaft part 122 can thus be coupled to the first shaft part 112 and the first handle part 114 to Rotate together.

The first carrier 140 of the screwdriver bit is also guided in the recess 138 in a displaceable manner. The carrier 140 is guided here on the inner wall of the recess 138 in a displaceable manner and is pre-stressed to a pushed-out position by a compression spring 170 (which has the form of a coil spring) (which is at Illustrated in Figure 11). The carrier 140 is held in the pushed-out position by a rubber ring 172. Therefore, the carrier 140 is connected to the first handle portion 114 in a capturing manner.

At its front end (which faces the second shaft member 122 and the first handle portion 114 in the illustration of FIG. 1 ), the second handle portion 116 is provided with a protruding portion provided with a surrounding groove 174. The outer diameter of the protrusion is slightly smaller than the inner diameter of the recess 138 at the rear end of the first handle portion 114. The size of the surrounding groove 174 is coordinated with the rubber ring or O-ring 172 in the recess 138. If the second handle portion 116 is now pushed into the recess 138, the movement is initially stopped when the protrusion with the groove 174 hits the rubber ring or the O-ring 172. The resulting resistance can then be overcome by a little pressure, and therefore the rubber ring 172 can snap into the groove 174. Therefore, the fully pushed-in state from the second handle part 116 to the first handle part 114 is reached, see FIG. 14, and the rubber ring 172 pushes the second handle part in the fully pushed-in position (illustrated in FIG. 14) 116 is held on the first handle portion 114. When extending the second handle portion 116, the resistance of the rubber ring 172 must then be overcome in order to be able to extend the second handle portion 116 from the recess 138 in the first handle portion 114 again. During this extension movement, the rubber ring 172 is held in a groove on the inner wall of the recess 138. This is because the groove 176 in which the rubber ring 172 is accommodated in the first handle portion 114 is designed to be deeper than the groove 174 on the second handle portion 116. During the extension of the second handle portion 116 from the state of FIG. 14, the groove 174 therefore slides past the rubber ring 172 so that the second handle portion 116 and the first handle portion 114 can be separated to achieve the illustration illustrated in FIG. 15 status.

As can be seen in FIG. 14, in the fully pushed-in state from the second handle portion 116 to the first handle portion 114, the carrier 140 is completely accommodated in the recess 138 in the first handle portion 114. Starting from the position illustrated in FIG. 11 or FIG. 15, the carrier 140 and the second handle portion 116 are pressed together into the position illustrated in FIG. 14. This movement is associated with the spring 170 (which is shown in Figure 14 In the fully compressed state, the compressive force occurs oppositely and pre-tensions the carrier 140 in a direction opposite to the second handle portion 116. When the second handle portion is extended, the carrier 140 is automatically moved into the pushed-out position illustrated in FIG. 15 by the spring 170. As already explained, the rubber ring 172 in the first handle portion 114 holds the carrier 140 in the fully ejected position illustrated here in FIG. 15. For this purpose, the carrier 140 has a surrounding shoulder 178 on its guided portion on the inner wall of the recess 138, which in the fully pushed-out state of FIGS. 15 and 11 abuts over the recess The other part of the rubber ring 172 of the groove 176.

The carrier 140, which can also be referred to as a drill cartridge, is therefore held on the first handle portion 114 in a capturing manner, and is automatically pushed out as illustrated in FIG. 15 when the second handle portion 116 is pulled away from the first handle portion 114 In position, and pushed into the recess 138 of the first handle portion 114 again when the second handle portion 116 is connected to the first handle portion 114.

FIG. 12 shows a cross-sectional view of the second handle portion 116 with the second shaft 122. A generally cylindrical protrusion can be seen in this view, which is arranged on the front side of the second handle portion 116 and is illustrated in FIG. 12 on the front side of the bottom around the second shaft 122 and is provided with a surrounding groove 174.

A recess 142 is disposed behind the second handle portion 116 (illustrated at the top in FIG. 12 ), and the recess is designed in substantially the same manner as in the case of the screwdriver 10 of FIGS. 1 to 10. In the recess 142, a second carrier 144, which can also be used as a drill cartridge, is disposed in the rear portion of the second shaft member 122. The carrier 144 is connected to a cover 128 which can be pushed to the rear side of the second handle portion 116 and closes the recess 142 in the pushed-up state of FIG. 12.

If the cover is pulled upward from the second handle portion 116 from the state of FIG. 12, the cover 128 remains connected to the carrier 144, and the carrier 144 can be displaced along the second shaft 122 to the figure In the fully extended position illustrated in 13, the carrier 144 is mostly arranged outside the recess 142 in the second handle portion 116 in the fully extended position. In this position, the screwdriver bit can then be removed from or inserted into the carrier 144.

The movement of the carrier 144 along one of the second shaft members 122 is stopped by a sleeve-shaped end stop member 160 placed on the rear end of the second shaft member 122. In the fully extended state of FIG. 13, the carrier 144 hits the annular sleeve.

In order to hold the carrier 144 in this fully extended position, the groove 180 for receiving one of a rubber ring or an O-ring 182 is provided at the front end of the second shaft member 122 (illustrated at the bottom in FIG. 13 ) Direction. For the purpose of clarification, the O-ring 182 has been omitted in FIG. 12 so that the surrounding groove 180 in the shaft member 122 can be easily seen there. In the fully extended state of the carrier 144 of FIG. 13, the rubber ring 182 is clamped between the inside of the carrier 144 and the base of the groove 180. Therefore, the carrier 144 is held in the extended position illustrated in FIG. 13. This is caused by the friction between the rubber ring 182 and the inner side of the carrier 144. The screwdriver bit can therefore be easily inserted into or removed from the carrier 144.

In the closed state of FIG. 12, for example, the cover 128 and thus the carrier 144 are held on the second handle portion 116 by a suitable fit between the cover 128 and the opening of the recess 142. However, for example, a clamping connection may also be provided between the lower end of the carrier 144 in FIG. 12 and the fitting recess 184 in the second handle portion 116 (which annularly surrounds the shaft 122). The lower end 186 of the carrier 144 in FIG. 12 is then held in the recess 184 in a latching or clamping manner, so that the cover 128 is firmly held in the closed position illustrated in FIG. 12.

The cover 128 latches on the carrier 144 itself. For this purpose, in the illustrated embodiment, suitable latch protrusions 188 are provided on the cover 128 which latch the annular sleeve 160 at the end of the second shaft 122 And provide a latch on the carrier 144 Additional latch protrusion 190.

10‧‧‧screwdriver

12‧‧‧The first shaft/shaft

14‧‧‧First handle part/handle part

16‧‧‧Second handle part/handle part

18‧‧‧ Front

20‧‧‧Recessed part/Hexagon socket/recessed part

Claims (13)

A screwdriver (10) having a handle and a first shaft member (12), characterized in that the handle has a first handle portion (14) connected to the first shaft member (12) for rotation therewith And a second handle part (16) releasably connected to one of the first handle parts (14), wherein the second handle part (16) is connected to a second shaft member (22) to rotate with it, And in a state where the handle portions (14, 16) are connected to each other, the second shaft member (22) is disposed in the first handle portion (14) at least in several sections so as to be releasable, the first The two shaft member (22) has a front end (24), and the front end (24) of the second shaft member (22) is provided with a blade or a receiving device for a screwdriver bit, wherein the second handle portion (16) ) Has a recess (42) at its rear end for receiving a second carrier (44) of a screwdriver bit (46), the second shaft (22) extending to the second handle In the recess (42) of the part (16), the second carrier (44) is displaceably arranged on the second shaft (22). The screwdriver according to claim 1, wherein the first handle portion (14) and the second handle portion (16) and/or the first shaft member (12) and the second shaft member (22) have mutually matching Coupling members to couple the handle parts and/or shafts to each other for rotation together in the connected state. The screwdriver according to claim 1 or 2, wherein the second shaft member (22) is shorter than the first shaft member (12). The screwdriver according to claim 1 or 2, wherein in the connected state of the first handle portion (14) and the second handle portion (16), the first shaft member (12) and the second shaft member (22) against each other quasi. The screwdriver according to claim 1 or 2, wherein the first shaft (12) has a front end (18) and a rear end (30), the front end (18) is provided with a blade or a blade for a screwdriver bit Receiving device, wherein the second shaft member (22) has a rear end, wherein in the connected state of the first handle portion (14) and the second handle portion (16), the second shaft member (22) ) The front end (24) is connected to the rear end (30) of the first shaft member (12) to rotate with the rear end (30) of the first shaft member (12). The screwdriver according to claim 5, wherein the front end (24) of the second shaft member (22) is provided with a recess (20) for receiving a screwdriver bit, and the rear of the first shaft member (12) The end (30) is designed in a way corresponding to a driving structure of a screwdriver bit, specifically a hexagonal short column. The screwdriver according to claim 1 or 2, wherein the first handle portion (14) and the second handle portion (16) and/or the first shaft member (12) and the second shaft member (22) have a mutual Cooperating holding members to hold the first handle portion (14) on the second handle portion (16) and/or hold the first shaft member (12) on the second shaft member (22). The screwdriver according to claim 7, wherein the holding members are designed as latch members, wherein the holding members have at least one magnet (26, 32), and/or wherein the holding members have at least one spring coil (34 ), and/or wherein the holding members have at least one rubber ring. The screwdriver according to claim 1 or 2, wherein the first handle portion (14) has a There is a recess (38) for receiving a first carrier (40) of a screwdriver bit (46). The screwdriver according to claim 9, wherein the first carrier (40) is extensiblely disposed in the recess (38) of the first handle portion (14). The screwdriver according to claim 9, wherein the first carrier (40) has a recess, and the second shaft (22) can be pushed into the recess at least in several sections. The screwdriver according to claim 9, wherein the first carrier (40) and the second shaft member (22) are provided with latch members that cooperate with each other. The screwdriver according to claim 1 or 2, wherein the second carrier (44) and the second shaft member (22) and/or the second handle portion (16) are provided with latching members that cooperate with each other.

Images