Drive ratchet wrench

Abstract

A drive-type ratchet wrench includes: a handle housing having a battery pack receiving portion; a drive housing including a drive unit having a drive shaft defining a longitudinal axis of the ratchet wrench, and the drive housing being connected to the handle housing at a first end of the handle housing in an axially extending direction along the longitudinal axis, wherein the drive unit is at least partially disposed in the drive housing and / or the handle housing; and an operating device including a switch for activating the ratchet wrench, wherein the handle housing further has a narrowing portion forming a first gripping area receiving a user's thumb and at least index finger, and the narrowing portion is arranged relative to the switch such that the ratchet wrench can be activated by pressing motion of at least the index finger on a longitudinal extension of the gripping area.

Description

Technical Field

[0001] This invention relates to a driven ratchet wrench. Background Technology

[0002] Documents EP3589452A1 and EP4257290A1 describe electrically driven ratchet wrenches comprising a handle housing with a generally cylindrical shape. However, this housing configuration has proven disadvantageous in use, particularly when idle or during tool changes. Therefore, there is a need for improved and more ergonomic ratchet wrenches. Under specific operating conditions, ratchet wrenches known from the prior art can still be improved in terms of ergonomics and operation. Therefore, there is a pursuit of improving the operation of ratchet wrenches. Summary of the Invention

[0003] In contrast, the drive ratchet wrench (hereinafter referred to as "ratchet wrench") according to the invention has the advantage that the handle housing has a narrowed portion forming a first gripping area (hereinafter referred to as "grip area") that receives the user's thumb and at least index finger, and the narrowed portion is arranged relative to the switch switch such that the ratchet wrench can be activated by pressing motion of at least the index finger on the longitudinal extension of the gripping area.

[0004] A ratchet wrench is a mechanical device used to tighten or loosen screws or nuts. Unlike conventional ratchet wrenches, driven ratchet wrenches feature improved functionality and efficiency. Ratchet wrenches are preferably electrically driven. In alternative embodiments, ratchet wrenches can also be pneumatically driven. This means that the ratchet wrench operates by compressed air or electrical energy to generate the torque required to tighten or loosen, for example, screws. In one embodiment, the ratchet wrench particularly includes a torque monitoring device and may have an automatic shut-off mechanism, for example, to prevent overload or damage to the fastening element.

[0005] The ratchet wrench includes a handle housing and a drive housing. The drive housing is connected to the handle housing at a first end in the axial direction along the longitudinal axis.

[0006] The drive unit housing includes a drive unit with a drive shaft, wherein the drive shaft defines the longitudinal axis of the ratchet wrench. The drive unit is at least partially disposed within the drive unit housing and / or the handle housing.

[0007] In addition to the drive housing, the handle housing also forms part of the ratchet wrench's housing and is particularly used to form the handle of the ratchet wrench. Specifically, the handle housing is designed to be able to be held by the user with one hand. The handle housing primarily and particularly has a generally cylindrical basic shape. The handle housing allows the user to safely grip and operate the ratchet wrench, ensuring ergonomic and comfortable operation.

[0008] Furthermore, the handle housing is particularly configured to receive, preferably at least partially, electronic components. This may include, for example, circuit boards or other electronic components required for the control and operation of the ratchet wrench.

[0009] The handle housing has an operating side. An operating device is arranged on the operating side. The operating device includes a switch for activating the ratchet wrench. The operating device may include all components necessary for activating the ratchet wrench, such as a switch. The operating device enables the user to activate and control the ratchet wrench. The operating side is particularly designed to achieve intuitive and user-friendly operation, wherein the operating device is particularly easy to access and operate.

[0010] Furthermore, the handle housing and battery pack receiving interface can be integrated into one unit.

[0011] The drive unit is at least partially arranged in the drive housing and / or handle housing. Here, the drive shaft may be arranged coaxially with the drive unit, particularly the motor shaft of the electric motor. Alternatively, the drive shaft may be integrally implemented with the motor shaft. The drive shaft is indirectly connected, in particular, to the eccentric shaft of the eccentric unit, which in particular drives the ratchet wrench head. The drive shaft is arranged coaxially with respect to the eccentric shaft. The drive shaft is at least, and particularly, supported, preferably contained within the drive housing.

[0012] Here, the drive shaft specifically defines the longitudinal axis of the ratchet wrench. The ratchet wrench extends specifically along the longitudinal axis. The drive housing is detachably or non-detachably connected to the handle housing at a first end in the axial extension direction of the longitudinal axis. The drive housing is at least partially surrounded by the handle housing, for example, inserted, snapped into, and / or glued into the handle housing, but preferably tightened. The drive housing is tightened to the handle housing specifically by a plurality of fastening devices, preferably eight screws. The fastening devices are arranged radially relative to the longitudinal axis, and the fastening devices are preferably oriented parallel to the radial orientation relative to the longitudinal axis.

[0013] The narrowing section is a constricted area of ​​the handle housing, designed to create a grip area and, in particular, improve its ergonomics. The narrowing section provides the user with a safe and comfortable grip on the ratchet wrench. Specifically, the narrowing section reduces the circumference of the grip area of ​​the ratchet wrench. Therefore, it is particularly well-suited to the user's hand shape within the narrowing section area. The narrowing section is preferably a shaped portion of the handle housing. This shaped portion is configured and positioned to optimize force transmission when operating the ratchet wrench and to reduce potential user fatigue.

[0014] The grip area receives at least the user's thumb and forefinger. Here, the constriction is arranged relative to the switch so that the ratchet wrench can be activated by pressing motion of at least the forefinger on the longitudinal extension of the grip area. Depending on the task, the user can change their position in the longitudinal extension of the ratchet wrench and thus their position in the longitudinal extension of the grip area. However, the user can always grip and activate the ratchet wrench in the area of ​​the constriction or the grip area. The grip area is specifically sized to receive at least the user's thumb and forefinger. The constriction and the switch are arranged relative to each other such that the axial force applied to the grip area by the forefinger with a natural gesture actuates the switch and activates the ratchet wrench. This arrangement enables ergonomic operation of the switch without unnatural hand or finger movements, especially when the user holds the ratchet wrench only with their thumb and forefinger in the edge area of ​​the grip area near the battery pack receiver.

[0015] The ratchet wrench preferably includes a transmission unit, which in particular increases or decreases the torque of the electric motor. The transmission unit preferably has a planetary gear transmission mechanism. The planetary gear transmission mechanism is implemented such that the sun gear is indirectly or directly torsionally connected to the drive shaft, wherein the sun gear meshes with multiple planet gears, especially three planet gears. The planet carrier receives multiple planet gears, particularly by means of rotatably supported pins. The planet carrier is preferably detachably connected to an eccentric shaft, ideally in a form-locking manner. For example, the eccentric shaft has external teeth in the connection area that form-lockingly engage with the internal teeth of the planet carrier.

[0016] The transmission unit is preferably threadedly connected to the drive unit housing. The transmission unit is preferably connected to the driven unit, and preferably tightened. Preferably, the transmission unit and the driven unit are flanged together at their ends and connected by a common nut. The transmission unit and the driven unit particularly have opposite pitches. More preferably, the nuts have different pitches, such that when the nut is tightened, the transmission unit and the driven unit are pressed together.

[0017] The driven unit particularly includes a driven device housing, which in particular receives an eccentric device. The eccentric device is configured to convert the rotational motion of the eccentric shaft into oscillating or reciprocating motion, which is transmitted to the tool receiving part, particularly by means of a switch mechanism. Furthermore, the driven unit has a rotation direction control lever, which is particularly configured to act on the switch mechanism, such that the tool receiving part operates in one direction while being freely rotatable in the opposite direction.

[0018] The tool receiver is particularly configured to receive insert tools at the tool changing device. For example, a socket wrench can be used to tighten or loosen screws or nuts. Furthermore, extensions, adapters, hinges, and / or bit attachments can be received in the tool receiver. The tool changing device is particularly characterized by a square head at the interface, for example, a 1 / 4-inch (Zoll), 3 / 8-inch, or 1 / 2-inch size. Alternatively, the tool changing device may have a hexagonal tool receiver, a Torx tool receiver, or a similar tool receiver.

[0019] The handle housing also has a battery pack receiver. This battery pack receiver is specifically a device or opening for removably or non-removably receiving and securing a battery pack or battery cells to supply power to the ratchet wrench. This interface is particularly designed to enable a secure and reliable fastening of the battery pack while ensuring ease of installation and removal. The battery pack receiver can, in particular, have various shapes and sizes. For example, it can be implemented as a plug-in connection, a clamping device, or a retainer to ensure the secure fastening of the battery pack. The initial battery capacity of the battery pack can be defined, for example, by a battery pack having three battery cells, such as a voltage of 10.8V and a capacity of 3Ah. At the aforementioned battery capacity, the battery cells are particularly and substantially arranged in a triangular configuration.

[0020] The narrowing is preferably implemented such that the maximum width of the ratchet wrench is reduced to the minimum width of the ratchet wrench in the gripping area in a viewing direction opposite to and parallel to the tool's installation direction. The narrowing is preferably formed in the gripping area by reducing the width of the ratchet wrench extending perpendicular to the longitudinal direction, wherein the minimum width occurs particularly and substantially in the middle of the gripping area.

[0021] More preferably, the narrowing portion has a narrowing coefficient that determines the ratio of the maximum width of the ratchet wrench to the minimum width of the ratchet wrench in the grip area, and is in the range of 0.25 to 0.05, preferably in the range of 0.2 to 0.1, and particularly preferably in the range of 0.15 to 0.18. The maximum width is determined by the handle housing in a viewing direction parallel to and opposite to the tool's mounting direction. The maximum width particularly excludes rubber buffers or other protrusions.

[0022] Preferably, in a viewing direction parallel to the tool's installation direction, the distance between the first end of the narrowed portion and the first end of the switch is within the range of 0 mm to 10 mm, more preferably within the range of 0 mm to 5 mm. This particularly ensures optimal accessibility and operation of the switch using the index finger.

[0023] The ratchet wrench preferably includes a battery pack that forms at least a portion of a second gripping area, specifically designed to receive the user's middle, ring, and little fingers. The second gripping area is particularly designed to receive the user's middle, ring, and little fingers when the user holds the ratchet wrench in the edge region of the gripping area near the battery pack receiving portion. The second gripping area particularly complements the first gripping area, receiving at least the thumb and index finger. The second gripping area particularly enables a complete and secure grip around the ratchet wrench. The second gripping area is formed by the handle housing and the battery pack.

[0024] More preferably, the ratchet wrench has a circuit board, wherein the battery pack and the circuit board are arranged opposite each other such that the circuit board at least partially overlaps with the battery pack. This particularly enables a compact structural form. The overlap is at least 10%, preferably 20%, and particularly preferably at least 35%.

[0025] The narrowing portion is preferably at least partially implemented as convex, concave, or a combination thereof. The narrowing portion is particularly shaped so that it can optimally fit the user's hand shape and assist in the force transmission when operating the ratchet wrench.

[0026] The ratchet wrench preferably has a second narrowing that is directly connected to the first narrowing and is substantially the width of the switch. This second narrowing further tapers the grip area from the narrowing on the operating side to the width of the switch. The second narrowing, or the transition from one narrowing to the other, is particularly concave and seamlessly transitions into the first narrowing. The concave shape of the second narrowing forms a finger rest surface, which receives, for example, the fingertip. This configuration particularly promotes a safe and stable grip. In cross-section, the combination of the narrowing and the other narrowing resembles the shape of a light bulb, wherein the other narrowing forms the lamp holder area.

[0027] Preferably, the battery pack having at least three battery cells is arranged in the battery pack receiving section such that two of the three battery cells are arranged on a battery plane perpendicular to the mounting direction and on the side facing the operating unit. In other words, the two battery cells are arranged in a plane orthogonal to the mounting direction and located in the gripping area on the operating side of the ratchet wrench. This arrangement particularly optimizes the space-saving integration of the battery pack in the gripping area.

[0028] Preferably, the first gripping area is saddle-shaped in a viewing direction perpendicular to the tool's mounting direction, having a first surface that descends towards the saddle area from the area of ​​the battery pack receiving section and a second surface that descends towards the saddle area from the area of ​​the ventilation opening. The first surface descends towards the saddle area from the battery pack receiving section at an angle of 20°, preferably up to 10°. The second surface descends towards the saddle area of ​​the gripping area from the ventilation opening at an angle of 30°, preferably up to 25°.

[0029] The narrow section features a continuous transition to the adjacent area of ​​the handle housing, thereby ensuring an ergonomic and comfortable grip.

[0030] The surface of the handle housing, especially in the narrowed area, has an anti-slip structure. This improves the user's grip and prevents the hand from slipping when necessary. The anti-slip structure should be understood in particular as a TPE coating.

[0031] The handle housing features ventilation openings, particularly in the narrower areas. These openings improve heat dissipation in the grip area and enhance user comfort.

[0032] The narrowed section is particularly symmetrically configured. The additional narrowed section is also particularly symmetrically configured. Symmetry means that the shape of the handle housing is implemented symmetrically in the viewing direction parallel to the mounting direction. This ensures, for example, ergonomics for left- or right-handed users.

[0033] The gripping areas of the ratchet wrench have particularly different cross-sectional shapes, which are distributed along the first and second gripping areas. In the first cross-sectional area of ​​the second gripping area, the ratchet wrench has a particularly elliptical cross-sectional shape. This elliptical shape results in a more stable hand position and prevents the tool from accidentally rotating in the hand. In the second cross-sectional area arranged along the first gripping area, and particularly in the area of ​​the longitudinal extension of the switch, the ratchet wrench has a bulb-shaped cross-section. The bulb-shaped cross-section is particularly formed by the combination of the aforementioned narrowed portion and the additional narrowed portion. This preferred embodiment can particularly result in an ergonomic fit that conforms to the user's hand. Attached Figure Description

[0034] Figure 1 A side view of a preferred embodiment of an electrically driven ratchet wrench is shown. Figure 2 Showing according to Figure 1 A cross-sectional view of a preferred embodiment of an electrically driven ratchet wrench. Figure 3 A top view of a ratchet wrench is shown. Figure 4 Showing a bottom view of a ratchet wrench. Figure 5A schematic cross-sectional view of the handle housing of a ratchet wrench is shown. Figure 6 A cross-sectional view of the battery pack and ratchet wrench is shown.

[0035] The same elements or elements with the same function are given the same reference numerals in the drawings. Detailed Implementation

[0036] Figure 1 A side view of a preferred embodiment of an electrically driven ratchet wrench 1 (hereinafter referred to as "ratchet wrench") is shown.

[0037] A ratchet wrench 1 is a mechanical device used to tighten or loosen screws or nuts. Unlike conventional ratchet wrenches, the driven ratchet wrench 1 features improved functionality and efficiency. Figure 1 In the preferred embodiment shown, the ratchet wrench 1 is electrically driven by a drive unit 30 and includes a battery pack 6. Here, the drive unit 30 ( Figure 2 It generates the torque required to tighten or loosen a screw. In one embodiment, the ratchet wrench 1 particularly includes a torque monitoring device and may have an automatic shut-off device, for example, to avoid overload or damage to the fastening element.

[0038] The handle housing 4 of the ratchet wrench 1 is specifically used to form the handle of the ratchet wrench 1. The handle housing 4 is particularly configured to be able to be held by a user with one hand. The handle housing 4 allows the user to safely grip and operate the ratchet wrench, ensuring ergonomic and comfortable operation.

[0039] The handle housing 4 has an operating side 104, which has a control device 80 in the form of a switch 83. The switch 83 allows the user to activate and control the ratchet wrench 1. The operating side 104 is particularly designed to achieve intuitive and user-friendly operation by means of a large switch 83, which is easily accessible and easy to operate.

[0040] The handle housing 4 in particular features a lock-off button 43, which constitutes a function for the electric switch 81 (in Figure 2 The safety mechanism (shown in the diagram) is as follows. The electric switch 81 can be operated by means of a switch lever 83, which is rotatably supported, particularly at its rotation point 84. The rotation point 84 of the switch lever 83 can be, for example, a sliding bearing in the handle housing 4. The locking button 43 specifically prevents the ratchet wrench 1 from being accidentally activated. In particular, when the locking button 43 is activated, the ratchet wrench 1 cannot be started even if the electric switch 81 is pressed. The locking button 43 must be manually deactivated before the ratchet wrench 1 can be started.

[0041] The handle housing 4 has an open air inlet 41 through which ambient air can be drawn in and, in particular, expelled through the air outlet 31 on the drive unit housing 3. This is especially useful for cooling the ratchet wrench 1 or the drive unit 30. Figure 2 This ensures air circulation within the housings 3 and 4. In another embodiment, the air inlet 41 may have other shapes, such as small grilles or slits that guide air into the housing 4. Furthermore, an air filter (not shown) may be installed at the air inlet 41 to prevent dirt, dust, and other impurities from entering the housing 4.

[0042] The ratchet wrench 1 has a work light 44, which is arranged at the first end 401 of the ratchet wrench 1 on the side facing the tool receiving part 21. The work light 44 is in particular an integrated light source and is adapted to illuminate the working area of ​​the ratchet wrench 1. In the illustrated embodiment, the work light 44 is implemented as an LED light, which is activated when the switch 83 is operated. In another embodiment, the work light 44 may be equipped with a switch to turn the light on and off as needed. Users can operate the ratchet wrench more safely and accurately, especially in poorly lit environments.

[0043] A battery pack receiving section 5 is arranged in the region of the second end 402 of the ratchet wrench 1. The battery pack receiving section 5 is a device or opening for detachably receiving and securing a battery pack 6 to supply power to the ratchet wrench 1. The battery pack receiving section 5 has mechanical and electrical interfaces for electrically and mechanically connecting the battery pack 6 to the ratchet wrench 1.

[0044] A battery status indicator 42 is disposed in the region of the second end 402 of the handle housing 4. The battery status indicator 42 is particularly disposed on the handle side 105. The battery status indicator displays the current charge level of the battery packs 6a and 6b to the user. The battery status indicator 42 can be implemented in various ways, such as as an LED light, an LCD display, or a digital display. In the preferred embodiment shown, the battery status indicator 42 is implemented using multiple LEDs. The battery status indicator 42 can also display the remaining charge level in the form of bars or percentages. Furthermore, different colors of the battery status indicator 42 can be used to display the charging status of the battery packs 6. For example, green indicates a full charge, yellow indicates a medium charge level, and red indicates a low charge level.

[0045] In the illustrated embodiment, the handle housing 4 and the battery pack receiving unit 5 are implemented as a single unit.

[0046] Furthermore, the handle housing 4 receives electronic components 8. Electronic components 8 include, for example, an electric switch 81, a circuit board 82, and multiple electrical lines 84 for conducting current and / or signals. The battery pack 6 and the circuit board 82 are arranged overlapping each other. This enables a particularly compact structural form. The overlap is greater than 38%. The operating axis 810 of the switch 81 intersects the circuit board 82 in particular.

[0047] The ratchet wrench 1 also has a drive housing 3. The drive housing 3 is connected to the handle housing 4 at a first end 401 of the handle housing 4 in the axial extension direction along the longitudinal axis 100, for example by means of a fastening element 48. The drive housing 3 is inserted into the handle housing 4 in the connection area.

[0048] Figure 2 The drive unit 30 shown is arranged in the drive housing 3, wherein, since the drive housing 3 is partially inserted into the handle housing 4, the drive unit 30 is also partially arranged in the handle housing. The drive unit 30 is an electric motor 30 having a drive shaft 32. The drive shaft 32 is supported in the drive housing 3, particularly by means of a bearing 33. Here, the drive shaft 32 defines the longitudinal axis 100 of the ratchet wrench 1. The ratchet wrench 1 extends particularly along the longitudinal axis 100. The drive housing 3 is detachably connected to the handle housing 4 at a first end 401 of the handle housing in the axial extension direction of the longitudinal axis 100.

[0049] The ratchet wrench 1 also includes a transmission unit 70 that changes the speed of the torque generated by the electric motor 30. The transmission unit 70 preferably has a planetary gear transmission mechanism. The transmission unit 70 is screwed onto the drive housing 3. The threaded connection of the transmission unit is achieved via the external thread of the encapsulation of the transmission unit 70. The transmission unit 70 is screwed onto the driven unit 2. In addition to changing the torque speed, the transmission unit 70 also performs a connection function. The transmission unit 70 connects the driven unit 2 and the drive housing 3, allowing the torque generated by the electric motor 30 to be transmitted to the driven unit 2.

[0050] The driven unit 2 includes, in particular, a driven device housing 24 that receives an eccentric device 22, at least a portion of a tool receiving section 21, and a rotation direction lever 23. The eccentric device 22 is configured to convert the rotational motion of the drive shaft 32 into an oscillating or reciprocating motion, which is transmitted to the tool receiving section 21, particularly by means of a switch mechanism. The rotation direction lever 23 is configured to act on the switch mechanism, allowing the tool receiving section 21 to operate in one direction and rotate freely in the opposite direction. The tool receiving section 21 is configured to receive tools at the tool changing device 210. For example, a socket wrench can be used to tighten or loosen screws or nuts. Furthermore, extensions, adapters, hinges, and / or bit attachments can be received on the tool receiving section 21. The tool changing device 210 has a square head on its outer surface, for example, a size of 1 / 4 inch (Zoll), 3 / 8 inch, or 1 / 2 inch.

[0051] The grip area 60a is specifically designed to provide the user with an improved tactile experience and enhanced operation. For example, the grip area may be made of thermoplastic elastomer (TPE), which provides a soft and easy-to-grip surface, while the cover area 48 is made of another material such as plastic (e.g., ABS) or metal to ensure the structural integrity of the housing. The resting device 10, made of TPE, ensures the ratchet wrench's anti-slip properties.

[0052] Figure 3 A top view of a ratchet wrench 1 is shown, which is parallel to and opposite to the mounting direction 211. Figure 4 A bottom view of a ratchet wrench 1 is shown, which is parallel to the mounting direction 211.

[0053] The narrowing portion 60b is implemented such that the maximum width 62a of the ratchet wrench 1 gradually tapers to the minimum width 62b of the ratchet wrench 1 in the gripping area 60a in a viewing direction opposite to and parallel to the installation direction 211. The narrowing portion 60b is formed in the gripping area 60a by reducing the width of the ratchet wrench extending perpendicular to the longitudinal axis 100, wherein the minimum width 62b appears substantially in the middle of the gripping area 60a.

[0054] More preferably, the narrowing portion 60b has a narrowing coefficient that determines the ratio of the maximum width 62a of the ratchet wrench 1 to the minimum width 62b of the ratchet wrench 1 in the gripping area 60a and is within the range of 0.15 to 0.18. The maximum width 62a is determined by the handle housing 4 in a viewing direction parallel to and opposite to the mounting direction 211. The maximum width 62a does not include rubber bumpers or other protrusions. The narrowing portion 60b is implemented as concave, and particularly as saddle-shaped, in a viewing direction opposite to and parallel to the mounting direction 211, having a first surface 66a that descends from the region of the battery pack receiving portion 5 toward the saddle region 61 and a second surface 66b that descends from the region of the ventilation opening 41 toward the saddle region 61. The first surface 66a descends toward the saddle region from the battery pack receiving portion 5 at an angle 661 of at most 10°. The second surface 66b descends from the ventilation opening 41 toward the saddle region 61 of the grip area 60a at an angle of up to 25° 660.

[0055] Figure 4 It is also shown that, in a viewing direction parallel to the mounting direction 211, the distance 64 between the first end 63 of the narrow portion 60b and the first end 831 of the switch 83 is within the range of 0 mm to 5 mm. This ensures optimal accessibility and manipulation of the switch 83 using the index finger 602.

[0056] The battery pack 6 forms at least a portion of the second grip area 65, which is configured to receive the user's middle finger 603, ring finger 604, and little finger 605. This is effective when the user holds the ratchet wrench 1 using only their thumb 601 and index finger 602 in the edge area of ​​the grip area 60a near the battery pack receiving portion 5. The second grip area 65 complements the first grip area 60a, thus enabling a complete and secure grip around the ratchet wrench 1. The second grip area 65 is composed of the handle housing 4 and the battery pack 6.

[0057] also, Figure 4 and Figure 5 A further narrowing 67 is shown, which is directly connected to the narrowing 60b and substantially has the width of the switch 83. This second narrowing 67 further tapers the gripping area 60a on the operating side 104. It is shaped concave and seamlessly transitions into the first narrowing 60b. The concave shape of the second narrowing 67 forms a finger rest surface, which, for example, receives the fingertip (in...). Figure 4 The diagram shows an operating position where fingers 602-605 are positioned on the switch 83. This configuration promotes a safe and stable grip. In cross-section, the combination of the narrowed portion 60b and another narrowed portion 67 resembles the shape of a light bulb (see [reference]). Figure 5 ), wherein the additional narrowing portion 67 forms the lamp holder area of ​​the bulb.

[0058] Figure 5 Also shown is a resting device 10, which is located on the side of the ratchet wrench 1 away from the tool receiving part 21, or arranged on the handle side 105. The handle side 105 of the ratchet wrench 1 is perpendicular to the drive shaft 32 ( Figure 2 The handle side 105 is the side visible in the viewing direction parallel to and opposite to the tool's mounting direction 211. In other words, the handle side 105 is the side opposite to the tool receiving section 21. The mounting device 10 has a bridging section 93 connecting the two support points. Furthermore, Figure 5 The tapering of the handle housing 4 is illustrated in the cross-section based on widths 62a and 62b.

[0059] Figure 6 The ratchet wrench 1 with the battery pack 6 is shown in a cross-sectional view passing through the ratchet wrench 1 and the battery pack 6. The battery pack 6 has three battery cells 90a-c, which are arranged in the battery pack receiving section 5 such that two of the three battery cells 90a-90c, 90a and 90b, are arranged on the battery plane 102, which is perpendicular to the mounting direction 211 and is arranged on the side facing the operating unit 80. This arrangement particularly optimizes the space-saving integration of the battery pack 6 in the gripping area 60.

Claims

1. A drive-type ratchet wrench (1), comprising: Handle housing (4), the handle housing having a battery pack receiving part (5). A drive unit housing (3) is provided with a drive unit (30) having a drive shaft (32) that defines the longitudinal axis (100) of the ratchet wrench (1), and the drive unit housing is connected to the handle housing (4) at a first end (401) of the handle housing (4) in the axial extension direction of the longitudinal axis (100), wherein, The drive unit (30) is at least partially disposed in the drive housing (3) and / or the handle housing (4). The control device (80) includes a switch (83) for activating the ratchet wrench (1). The handle housing (4) is characterized in that it further has a narrowing portion (60b) forming a first gripping area (60a) that accommodates the user's thumb (601) and at least index finger (602), and the narrowing portion (60b) is arranged relative to the switch (83) such that the ratchet wrench (1) can be activated by pressing motion of at least the index finger (602) on the longitudinal extension of the gripping area (60a).

2. The ratchet wrench (1) according to claim 1, characterized in that, The narrowing portion (60b) is implemented such that the maximum width (62a) of the ratchet wrench (1) is reduced to the minimum width (62b) of the ratchet wrench (1) in the gripping area in a viewing direction opposite to and parallel to the tool's mounting direction (211).

3. The ratchet wrench according to claim 2, characterized in that... The narrowing portion (60b) is provided with a narrowing coefficient that determines the ratio of the maximum width (62a) of the ratchet wrench (1) to the minimum width (62b) of the ratchet wrench (1) in the gripping area (60a) and is located in the range of 0.25 to 0.05, preferably in the range of 0.2 to 0.1, and particularly preferably in the range of 0.15 to 0.

18.

4. The ratchet wrench according to any one of the preceding claims, characterized in that, In the viewing direction parallel to the installation direction (211) of the tool, the distance (64) between the first end (63) of the narrowing portion and the first end (831) of the switch (83) is in the range of 0 mm to 10 mm, preferably in the range of 0 mm to 5 mm.

5. The ratchet wrench according to any one of the preceding claims, characterized in that... A battery pack (6) is provided, which forms at least a portion of a second gripping area (65), and the second gripping area is specifically configured to accommodate the user's middle finger (603), ring finger (604) and little finger (605).

6. The ratchet wrench according to claim 5, further comprising a circuit board (82), characterized in that, The battery pack (6) and the circuit board (82) are arranged opposite each other such that the circuit board (82) at least partially overlaps the battery pack (6).

7. The ratchet wrench (1) according to any one of the preceding claims, characterized in that, The narrowing portion (60b) is at least partially implemented as convex, concave, or a combination of convex and concave.

8. The ratchet wrench (1) according to any one of the preceding claims, characterized in that... An additional narrow section (67) is provided, which is directly connected to the narrow section (60b) and has essentially the width of the switch (83).

9. The ratchet wrench (1) according to any one of the preceding claims, characterized in that, The battery pack (6) has at least three battery cells (90a-c), and the battery pack is arranged in the battery pack receiving part (5) such that two of the three battery cells (90a, b) are arranged on the battery plane (102), which is arranged perpendicular to the mounting direction (211) and on the side facing the operating unit (80).

10. The ratchet wrench (1) according to any one of the preceding claims, characterized in that, The first gripping area (60a) is saddle-shaped in the viewing direction perpendicular to the installation direction (211) of the tool. The first gripping area has a first surface (66a) that descends from the area of ​​the battery pack receiving part (5) toward the saddle area (61) and a second surface (66b) that descends from the area of ​​the ventilation opening (41) toward the saddle area (61).

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