CN1819899A - Screwdriver handle provided with a blade tip storage chamber - Google Patents

Abstract

The invention relates to a screwdriver handle provided with a chamber for storing screwdriver blade tips or similar elements, wherein the storage chamber is shifted from the closed to opened position thereof by moving two handle elements (1, 2) along the shaft with respect to each other. One handle element therein (1) is provided with a core (4) in a cavity (3) of the other handle element (2), the two handle elements (1, 2) being maintained in the closed position of the storage chamber (6) by clip stop devices (5, 7). The inventive screwdriver handle is importantly characterized in that the clip stop devices (5, 7) are releasable from a clip-locking condition thereof by pressure applied to the control area (8) to the end side of the handle (2).

Description

Screwdriver handle with bit storage

The present invention relates to a screwdriver handle having a storage chamber for storing screwdriver bits or the like, wherein the storage chamber can be shifted from a closed position to an open position by axial relative movement of two handle parts, one of which The part has a core that fits into the cavity of the other handle part, and the two handle parts are kept in the closed position of the storage cavity by means of a locking stop, which is characterized in that the locking stop can be passed in a The actuating area on the end side of the handle is pressed out of its locked state.

A handle of such a screwdriver or a screwdriver with such a handle is known from US 5265504. The handle consists of two handle parts. The handle portions can be pulled away from each other to open the storage cavity. The screwdriver bit, the so-called bit (Bit), is stored in the storage chamber and can therefore be removed. One of the two handle parts, ie the one with the blade, has a cavity. In the closed state the core of the other handle part is inserted into this cavity. Around the core there are several holder compartments for storing screwdriver bits. A detent projection barbs over the detent step in the closed position.

A kind of screwdriver handle is known by US 6629478B2, and wherein, a handle part with bit has some sockets and is used for inserting screwdriver bit. This handle part can be inserted against the force of a compression spring into the cavity of the other handle part forming the end side of the handle. Said end side of the handle has a hole for receiving a screwdriver bit or a smaller handle with a screwdriver bit.

Known a kind of screwdriver handle by DE 8404176.5U1, it is hollow. The cavity which is open towards the end side of the handle is covered with a cover which forms a cover. Manipulation of a pressurized area moves the lid's detent tongue to allow the lid to open. The screwdriver bit placed in the hole can then be removed.

A handle for a screwdriver is known from DE 20015484 U1, wherein the handle comprises two handle parts that can rotate around an axis of rotation parallel to the handle axis. These handle parts are designed with cavities into which tools and also screwdriver bits can be inserted. The two handle parts are interlocked by means of a locking joint.

US 4934223 has introduced the screw tool of a kind of pistol-like handle, and it has a magazine that is located in the handle, and magazine can be pulled away by a hole at end side of handle. There are some screwdriver bits inserted in the magazine.

DE 29414974U1 describes a screwdriver handle which consists of two parts inserted into each other. One of the hollow handle parts has a hole into which the second handle part with the cutter head is completely inserted. The handle part with the bit stores the screwdriver bit.

Starting from the prior art cited in the introduction, the object of the present invention is to further improve handles of the type described in terms of ease of use. The objects of the invention are achieved by the technical solutions stated in the claims.

Claim 1 first and foremost provides that the latching lock can be withdrawn from its latched state by pressing on an actuating area belonging to the end side of the handle. The handle preferably has an elongated shape and has two end sides facing away from each other. The knife head or the knife holder can protrude from one end side. The other end side constitutes the rounded top of the handle, which is in the palm of the hand when the handle is held around the handle. This end side of the screwdriver handle, also referred to as the hood, is to be designed as an actuating area according to the first variant of the invention. Preferably, this operating area is formed by buttons. Said button is preferably located in a pot-shaped recess on the end side of the handle. Here, the end face of the button can have a central depression. The edge of the depression may protrude beyond the mouth of the groove. The buttons preferably have soft or rounded edges, which do not damage the user's palm when gripping the handle. According to a preferred configuration of the present invention, the locked state of the two handle parts can only be canceled when the button is moved a certain distance into the groove. The latch is released in particular when the end face of the button is below the edge of the recess. Based on this design, unintentional cancellation of the card lock is effectively avoided. The snap-in locking device can be an elastic tongue with a locking piece at its free end, which cooperates with the locking step. In this case, the elastic tongue can be assigned to the core part, while the locking step can be assigned to the handle part with the cavity. The elastic tongues, which can be integrally molded on the core, therefore protrude axially from the end section of the core. A plurality of diametrically opposed resilient tongues may be used. Preferably, these elastic tongues are moved by actuating projections of the buttons. For this purpose, the elastic tongues have control ramps which are acted upon in a suitable manner by actuating projections of pushbuttons or other designed actuating means. Preferably, both handle parts can be transferred from the closed position to the open position after being pressed on the actuating area by the force of a pretensioned spring. This spring force is less than the locking force of the snap-in locking device. The spring can only relax after the actuation of the button has ended. Here, according to a preferred embodiment of the invention, the two handle parts are moved away from each other into a stop position, in which position the screwdriver bit placed in the storage chamber can be removed.

The object of the invention is also achieved by the technical solution stated in claim 12 .

Claim 12 first and foremost provides that the detent locking device is released from its detented state by pressing on the actuation zone. The counterlock locking device can be a locking step. The actuation zone can be assigned to the handle part with the cavity. The recessed handle portion can be removed from its latched position. According to the invention, deactivation of the latched state, which is a precondition for the relative movement of the two handle parts, can only be achieved subjectively by applying pressure to the actuation zone. According to a preferred development of the invention, the detent locking device is a deflectable elastic tongue with a locking piece at its free end. The elastic tongue with its catch is located in front of a step of the handle with the cavity. Only when the elastic tongue moves radially inward to make the lock block leave the movement track of the stop step, can the two handle parts move relative to each other in the axial direction to open the storage cavity. In order to displace the locking piece radially, pressure must be applied to the actuation zone. This pressure is transmitted to the elastic tongue through the walls of the cavity. Preferably, the actuation area is formed by a soft plastic insert of the outer wall of the handle part with the cavity. Advantageously, two latching locks are arranged diametrically opposite each other to which an actuation field is assigned. The two control zones are thus offset by 180° from one another. If you hold the screwdriver handle, it is not a hindrance if only one of the two actuating areas is pressed when actuating the screw. It turns out that no diametrical pressure occurs in normal use for gripping or surrounding the handle. If the handle is grasped, the thumb presses on the side facing the outside of the handle. The handle is surrounded by index fingers diametrically opposed. In this case, the area of the outside of the handle diametrically opposite the thumb lies at the bend of the second and third phalanx of the index finger. Even if the handle is gripped from above, the two diametrically opposite areas are not pressurized. The axial section in which the two diametrically opposite actuating zones are located is clamped at three points between the thumb, index finger and ring finger. According to a further development of the invention, the elastic tongue material is not integrally molded onto the core. In this case, the elastic tongue can be formed by a wall section of a wall of a holder compartment for accommodating screwdriver bits. It is also advantageous if the radial force application of the detent locking device does not take place directly via the soft plastic insert, but via an actuating arm and an actuating projection formed by the actuating arm. Here, the actuating projection presses against the elastic tongue and deflects it. The steering arm may consist of a U-shaped free-cut section cut from a hard plastic sleeve forming the handle portion with the cavity.

However, the object of the present invention can generally also be achieved by the technical solution described in claim 20 .

The two handle parts can be acted upon by a spring force against one another in such a way that they are displaced by a compression spring compressed in the closed position and then displaced by the expanded compression spring as far as the open position after the latch has been released. Preferably the two handle parts only move to a partially open position. The compression spring is supported on the bottom of the cavity and on the end face of the core. Here, the compression spring can be fixed on the bottom of the cavity by means of a centering cam. The other end of the pressure spring can protrude into a guide cylinder on the end side of the core. According to a further development of the invention, both handle parts are locked in the fully open position. The locking described here is achieved by means of the actuating projection of the actuating arm. When shifting to the open position, the actuating projection rides over the detent projection. In order to transfer the two handle parts from the fully open position to the closed position again, the actuating projection must pass over the stop projection by exerting an axial force. In the fully open position, the actuating lug rests against a stop. This stop cannot be exceeded in the direction of axial separation of the two handle parts. However, the two handle parts can be plugged together due to the actuating projections on the one hand and the rear bevels which stop them from interacting on the other hand. Preferably, the handle portion with the core carries a bit or a replacement rod. The handle part with the cavity is preferably provided as a sleeve part with a rounded tip of the handle.

In principle the objects of the invention can be achieved by each claim independently.

Some specific embodiments of the present invention are described below with the aid of the accompanying drawings. in:

Figure 1 shows a view of the handle of a screw tool without a bit in a closed position;

Figure 2 represents a view in the open position according to Figure 1;

Fig. 3 represents the view by section line III-III among Fig. 1;

Fig. 4 represents part IV in Fig. 3;

Fig. 5 represents the section by line V-V in Fig. 2;

Fig. 6 shows the section according to the line VI-VI in Fig. 3; And

Figure 7 shows a top view of the handle part 2, with the soft plastic insert in the area of the control area removed;

Figure 8 shows a side view of a second embodiment of the present invention;

Fig. 9 shows the cross section according to the line IX-IX in Fig. 8, which is in the locked state at this moment, and the storage chamber is closed in this state;

Fig. 10 represents the cross section by line X-X in Fig. 8, which is also in the closed position at this moment;

Figure 10a represents a partial enlargement along the line Xa-Xa in Figure 10;

Fig. 11 represents the view according to Fig. 10, the button on the end side has been pressed down this moment;

Fig. 12 shows the view according to Fig. 9 in the open position, and

FIG. 13 shows the view according to FIG. 10 in the open position.

The handles shown in Figures 1 to 7 can accommodate either a fixed bit or a replacement rod. The cutter head or replacement rod is installed in the cutter head mounting seat 23 . In DE 10233866.3 the mode of operation of the replacement lever that can be used here is specified in detail, therefore, the disclosed content of this application is fully included in the present application here.

The handle basically consists of two parts. The handle part 1 is a sleeve part. The handle part 2 is a core piece. Inside the sleeve part 2 there is a cavity 3 . The cavity wall 13 has recesses 24 on the outer wall side, in which recesses 24 are filled with embedded soft plastic. This results in two interlocking chains made of soft plastic at the front and back. A handle section with the largest diameter is provided between the two grids. The boundary seam between the two handle parts 1 , 2 on the jacket side is in the region of a local increase in diameter which directly adjoins the hand-twisting zone. The ring-shaped concave section in the middle of which the handle is covered constitutes two opposing control areas 8 by means of its soft plastic inserts. Under each soft plastic insert, the bottom of the notch 24 is provided with a U-shaped free cut 25 . An actuating arm 14 is formed based on this cutout 25 . The free end of the manipulation arm 14 is designed with a manipulation protrusion 15 protruding radially inward.

The handle part 1 has a core 4 on which a cutter head or replacement rod is mounted. The core is fully inserted into the cavity 3 in the closed position shown in FIG. 3 . There are a plurality of clamping grids extending axially on the outer side of the core body. There is a screwdriver bit 11 in each clip frame grid. In the open position (see FIG. 5 ) of the storage chamber 6 formed by the clip racks, the screwdriver bits can be removed or reinserted.

Two diametrically opposite walls 10 , which separate the individual clamping cells from one another, each continue as a spring tongue 5 . The elastic tongues 5 have locking lugs 9 directed radially outwards. In the closed position shown in FIG. 3 or FIG. 4 , the two locking pieces 9 are located in front of the stop step 7 of the handle part 2 . This prevents the two handle parts 1 , 2 from moving axially relative to each other. Only through the simultaneous radially inwardly directed pressure acting on the two radially opposite soft zones 8, can the locking piece 9 be moved out of the movement path of the stop step 7 by deflection of the actuating arm 14, thereby allowing the two The handle parts 1 and 2 move relative to each other in the axial direction. To achieve this, the actuating projections 15 act radially inward on the elastic tongues 5 so that they are elastically deflected.

On the end side of the core 4 there is a cylindrical extension which forms the guide cylinder 7 . In the closed position, there is a compressed pressure spring 16 inside the guide cylinder 17 . The end edge of the guide cylinder 17 rests here against the cavity bottom 3 ′ of the cavity 3 . A centering cam 20 of the pressure spring 16 protrudes into the bore of the guide cylinder 17 in this case.

If the latching between the two handles 1 , 2 is canceled as described above by simultaneously pressing on the two opposing soft areas 8 , the spring 16 can relax and expand. Expansion of the pressure spring 16 leads to a partial opening of the storage chamber 6 up to the position represented in FIG. 2 . In this position the compression spring 16 is completely relaxed.

The fully open position shown in FIG. 5 is achieved by exerting an axial pull on the two handle parts 1 , 2 . In the final phase of displacement in the direction of this fully open position, the actuating projection 15 of the actuating arm 14 passes over a stop projection 18 on the core 4 . In this fully open position, the rear side wall of the actuating projection 15 abuts against a stop 19 . The front side of the manipulation projection 15 is a slope. Likewise, the rear side of the stop 19 is also inclined. These two ramps act together as climbing ramps when the two handle parts are mated for handle assembly.

In order to close the storage chamber 6 again, the handle part 2 with the cavity 3 has to be moved axially relative to the handle part 1 . The latch formed by the cooperation of the locking projection 18 and the actuating projection 15 is overcome here by axial pressure.

The closed position shown in FIG. 4 is achieved by the bevel of the locking piece 9 interacting with the bevel of the stop step 7 . The two ramps slide against each other during the final phase of the closing movement. This is combined with an elastic deflection of the elastic tongue 5 in radially inward direction.

In the handles shown in FIGS. 8 to 13 , the detented state is deactivated by pressing on a button 8 which is arranged on the end side of the handle part 2 . The handle part 2 has an internal cavity 3 . The core 4 of the second handle part 1 is inserted into the cavity 3 . The core 4 has storage cavities 6 for screwdriver bits 11 arranged along the circumference. The storage chambers 6 are separated from each other by walls. In addition, the core 4 has a hole for inserting a bit. The core 4 also has a rear axial extension 31 which produces a total of four diametrically opposite elastic tongues 5 . Each elastic tongue is designed as a locking piece 9 with a control bevel 30 . The axial extension 31 is inserted into the interior of the helical compression spring 16 , the end of which is supported on a step 34 of the core 4 . The other end of the helical compression spring 16 is supported on the bottom of the cavity 3 . By means of this compression spring 16 , the core 4 is loaded with spring force in the direction that the handle part 2 opens the cavity 3 .

The core has a radially projecting stop 32 in the form of a protrusion. At the same radial position as the stop 32 , the cavity 3 also has a stop 33 which abuts against the stop 33 when the spring 16 presses the two handle parts 1 , 2 apart. The stop 33 protrudes radially inwards from the wall of the cavity 3 . The core 4 is axially movable but not rotatably installed in the cavity 3 . Torque can thus be transmitted from handle part 2 to handle part 1 .

The handle part 2 is designed such that there is a pot-shaped groove 26 at the end of the round top of the handle part 2 . There is a central through hole at the bottom of the pot-shaped groove 26, and the fixed arm 35 of the button stretches out through the central through hole, and the button applies a spring force towards the opening direction of the groove 26 by means of a compression spring 27. The hook-shaped end section of the securing arm ensures the axial fixation of the button in the recess 26 provided for it.

The actuating projection of the button 8 projects axially into the recess 26 offset relative to the fastening arm 35 . In the closed position, the actuating projection 26 is located in front of the end-side control ramp 30 of the spring tongue 5 . In the closed position, the elastic tongue end section designed as the locking piece 9 protrudes through the bottom hole of the groove 26 into the groove 26 in such a way that the locking piece 9 hooks over the edge of the bottom hole. This area that is caught by the barb of the locking piece 9 forms the stop step 7 .

In the closed position (FIGS. 9, 10) the pressure spring 16 is compressed. If the button is pressed in this state as shown in FIG. 11 , the control ramp 30 of the elastic tongue 15 is acted upon by the actuating projection 29 . As the button 8 is pressed, the end edge of the manipulation projection slides along the control slope 30 . Simultaneously with this sliding, the end section of the elastic tongue 5 moves radially inwards. As long as the end face of the button 8 is above the opening edge 28 of the recess, the locking pieces 9 hook into the locking steps 7 assigned to them. Only when the end face of the button 8 engages in the groove 26 does the elastic tongue 5 bend radially inwards to such an extent that the locking piece 9 is disengaged from the locking engagement with the locking step. The compression spring 16 thus expands and displaces the handle part 1 with the core 4 into the open position shown in FIGS. 12 and 13 , where the stops 32 , 33 meet each other. In this open position, the compression spring 16 is still slightly prestressed.

If, starting from the open position shown in FIGS. 12 and 13 , the core 4 is moved back into the cavity, the compression spring 16 is compressed. The control ramp 30 acts on the inclined control surface of the stop step 7 . During the final phase of the insertion movement of the core 4 in the cavity 3 , the locking pieces 9 are barbed against the stop steps 7 assigned to them. In this case, the control ramp 30 slides along the stop step 7 until the control ramp 30 snaps onto the stop step.

All disclosed features are (in themselves) essential to the invention. The disclosure content of the relevant/attached priority documents (copies of earlier application documents) is also fully included in the disclosure content of the present application, also for this purpose, the characteristics of these documents are also incorporated in the claims of the present application middle.

Claims (23)

1. A screwdriver handle comprising a storage cavity for storing screwdriver bits or similar parts, wherein the storage cavity can be transferred from a closed position to an open position by axial relative movement of two handle parts (1, 2) , one of the handle parts (1) has a core (4) which fits into a cavity (3) in the other handle part (2), and the two handle parts (1, 2) are locked by means of snap locks The device (5, 7) can be held in the closed position of the storage chamber (6), and is characterized in that the locking device (5, 7) can be moved through an actuating area (8) belonging to the end side of the handle (2). ) to exit from its latched state by pressing up. 2. Handle according to claim 1, characterized in that the actuation area (8) is formed by a button which is applied in a recess (26) on the end side of the handle (2). 3. Handle according to one or more of the preceding claims, characterized in that said button (18) can be moved into said pot-shaped recess (26) against the force of a return spring (27). 4. Handle according to one or more of the preceding claims, characterized in that when pressing on the button (8), only the end face of the button (8) is on the edge of the groove (26) (28) the locked state is canceled only when it is below. 5. According to the handle described in one or more of the preceding claims, it is characterized in that: the locking stop device (5) is a deflectable elastic tongue with a locking block (9) at its free end, which Cooperate with a stop step (7). 6. Handle according to one or more of the preceding claims, characterized in that said elastic tongue (5) is integrally molded in material on said core (4). 7. Handle according to one or more of the preceding claims, characterized in that said elastic tongue (5) is formed by an end section of the core (4). 8. The handle according to one or more of the preceding claims, characterized in that it has a plurality of diametrically opposed snap-in stops (5). 9. According to the described handle of one or more of the preceding claims, it is characterized in that: the handle has an actuating projection (29) made of button (8), which acts on the elastic tongue in order to cancel the locked state. (5) up. 10. According to one or more described handles in the preceding claims, it is characterized in that: said control protrusion (29) acts on a control slope of the elastic tongue (5) that also extends axially in the axial direction (30) on. 11. Handle according to one or more of the preceding claims, characterized in that said two handle parts (1, 2) are pressed by a pre-tensioned spring ( 16) The force is transferred from the closed position to the open position. 12. A screwdriver handle comprising a storage cavity for storing screwdriver bits or similar parts, wherein the storage cavity can be opened by relative axial movement of two handle parts (1, 2), one of which ( 1) There is a core (4) fitted into a cavity (3) of the other handle part (2) with at least one snap-in stop (5) in storage The closed position of the cavity (6) cooperates with the pair of locking and stopping devices (7) of the handle part (2) with the cavity, which is characterized in that the locking and stopping devices (5) can It is automatically released from its latched state by pressing on an actuation zone (8) of the handle part (1) with the opposing latching stop (7). 13. The handle according to claim 12, characterized in that the counter-locking stop (7) is a stop step. 14. According to the handle according to one or more of the preceding claims, it is characterized in that: the handle part (2) with the cavity (3) is equipped with the control area (8); and, the The snap-in locking device is a deflectable elastic tongue with a locking piece (9) at its free end, which is integrally formed on the core (4). 15. According to one or more described handles in the preceding claims, it is characterized in that: said elastic tongue (5) is formed by a wall for receiving the wall of the clamping frame lattice of installing a screwdriver bit (11) Section (10) constitutes. 16. Handle according to one or more of the preceding claims, characterized in that it has two diametrically opposed snap-in stops (5). 17. According to one or more described handles in the preceding claims, it is characterized in that: said control area is formed by a soft plastic in the outer wall (13) of said handle part (2) with cavity (3). Inlay pad (8) constitutes. 18. According to one or more described handles in the preceding all claims, it is characterized in that: this handle has a handle area (8) that is configured with the handle part (2) that has cavity (3) The actuating arm (14) acts on the spring tongue with an actuating projection. 19. According to the handle according to one or more of the preceding claims, it is characterized in that: said control arm (14) consists of a hard plastic sleeve forming said handle part (2) with cavity (3) A U-shaped free cutout on the barrel is formed and under said soft plastic insert (8). 20. A screwdriver handle comprising a storage cavity for storing screwdriver bits or the like, wherein the storage cavity can be opened by relative axial movement of two handle parts (1, 2), one of which (1) There is a core (4) fitted into a cavity (3) of the other handle part (2) with at least one snap-in stop (5) in the The closed position of the storage cavity (6) cooperates with the pair of locking and stopping devices (7) of the handle part (2) with a cavity, and is characterized in that the two handle parts (1, 2) are Such means are mutually subjected to the effect of spring force, that is, they are displaced to an open position by a spring pretensioned in the closed position, especially the relaxation movement of the pressure spring (16) after canceling the interlocking latch, and Preferably only transferable to a mutually partially open position. 21. The handle according to claim 20, characterized in that: one end of the pressure spring is supported on the bottom (3') of the cavity (3), and the other end is supported on the bottom of the core (4). end side. 22. Handle according to one or more of the preceding claims, characterized in that said two handle parts (1, 2) stop each other in a fully open position, in which case the actuating arm ( 14) The actuating projection (15) is located in front of a stop projection (18) which can be overcome by exerting an axial force. 23. Handle according to one or more of the preceding claims, characterized in that said handle part (1) with core (4) is equipped with a cutter head or a replacement rod; and, said The handle part (2) with the cavity (3) constitutes the circular top end (21) of the handle.

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