Patent Publication Number: US-2023158541-A1

Title: Handheld device, method and attachment device

Description:
The invention relates to a handheld device for dispensing filling material into a joint. The handheld device is designed, for example, as a cartridge press and/or a tubular bag press. The filling material is, for example, joint sealant, in particular silicone or acrylic. The handheld device comprises a handle assembly for manually gripping the handheld device and moving the handheld device along a joint path. The handheld device further comprises a dispensing device for dispensing the filling material into the joint. 
     It is an object of the invention to provide a handheld device which makes it easier for the user to achieve, when dispensing the filling material into the joint, a desired body geometry, for example a body geometry which is as uniform as possible, of the filling material body formed by the dispensed filling material. The filling material body has, for example, an elongated, in particular string-shaped body geometry and should expediently have a constant width along the length of the filling material body. 
     The object is solved by a handheld device according to claim  1 . The handheld device comprises a sensor device adapted to detect an influencing quantity influencing the body geometry of the filling material body formed by the filling material dispensed into the joint. The influence quantity is, for example, a handheld device speed at which the handheld device is moved, or relates to a joint geometry of the joint. The handheld device speed may also be referred to as pulling speed. The handheld device is adapted to adjust a dispensing rate at which the dispensing device dispenses the filling material, based on the detected influence quantity. The dispensing rate is the amount of filling material that is dispensed per unit of time. 
     In this way, the handheld device can compensate for one or more interfering influencing quantities, such as a varying handheld device speed and/or a varying joint geometry, and thus prevent these one or more influencing quantities from affecting the body geometry of the filling material body in an undesirable manner. 
     If, for example, the user guides the handheld device along the joint path at a varying—i.e. not constant—handheld device speed when dispensing the filling material, this results in a conventional handheld device dispensing more filling material (per unit length of the joint path) at joint sections where the handheld device speed is lower than at joint sections where the handheld device speed is higher. The result is a filling material body with a non-uniform body geometry. 
     According to a preferred embodiment, the handheld device described can be used to detect the handheld device speed and to adjust the dispensing rate of the filling material to the detected handheld device speed. For example, at a higher detected handheld speed, the handheld device dispenses the filling material at a higher dispensing rate than at a lower detected handheld speed. In this way, the influence of the varying handheld speed on the body geometry can be compensated and it becomes possible, for example, to achieve a uniform body geometry (despite a varying handheld speed). 
     If, for example, the joint geometry, in particular the joint width, varies along the joint path, this can, with a conventional handheld device, have the result that at joint sections where the joint width is smaller (and therefore less filling material is required for filling and/or covering the joint) too much filling material for the given joint width is dispensed, and, at joint sections where the joint width is larger (and therefore more filling material is required for filling and/or covering the joint), too little filling material for the given joint width is dispensed. This results in uneven filling and/or covering of the joint along the joint path. 
     According to a preferred embodiment, the joint geometry, in particular the joint width, can be detected by means of the described handheld device and the dispensing rate of the filling material can be adapted to the detected joint width. For example, the handheld device outputs the filling material at a higher dispensing rate when the joint width is greater than when the joint width is smaller. In this way, the influence of the varying joint width on the body geometry, in particular the filling and/or covering of the joint, can be compensated for and it becomes possible, for example, to achieve a uniform filling and/or covering of the joint (despite a varying joint width). 
     Advantageous further developments are defined in the subclaims. 
     The invention further relates to a method for dispensing filling material into a joint with a handheld device, in particular a cartridge press and/or a tubular bag press, comprising the steps of: Moving the handheld device along the joint path, dispensing the filling material into the joint, detecting an influence quantity influencing a body geometry of a filling material body formed by the filling material dispensed into the joint, and adjusting the dispensing rate at which the filling material is dispensed, based on the detected influence quantity. 
     The method is expediently carried out by means of the described handheld device and/or is designed in accordance with a described further development of the handheld device. 
     The invention further relates to an attachment device for detachable attachment to a driver device to form a handheld device for dispensing filling material into a joint, comprising: a dispensing device for dispensing the filling material into the joint, the dispensing device being drivable by the drive device, and a sensor device adapted to detect an influence quantity influencing a body geometry of a filling material body formed by the filling material dispensed into the joint, wherein the attachment device is adapted to provide a control signal to the drive device based on the detected influence quantity to control the drive of the dispensing device to adjust the dispensing rate at which the dispensing device dispenses the filling material. 
     Further exemplary details as well as exemplary embodiments are explained below with reference to the figures. Thereby shows 
    
    
     
         FIG.  1    a side view of a handheld device and a processing area, 
         FIG.  2    a top view of a handheld device guided along a joint, together with a diagram showing a handheld device speed and dispensing rate, 
         FIG.  3    a block diagram of a handheld device with a first composition, 
         FIG.  4    a block diagram of a handheld device with a second composition, 
         FIG.  5    a perspective view of the handheld device without inserted filling material container, 
         FIG.  6    a perspective view of the handheld device with inserted filling material container, and 
         FIG.  7    a sectional view of a filling material container in which a pressing element is inserted. 
     
    
    
     In the following explanations, reference is made to the spatial directions “x-direction”, “y-direction” and “z-direction” which are orthogonal to each other. The x-direction and the y-direction are horizontal directions, and the z-direction is a vertical direction (in a horizontal use position of the handheld device  10 ). 
       FIG.  1    shows the handheld device  10  together with a processing area  83 . The processing area  83  comprises a joint  71 . Exemplarily, the processing area  83  includes a first area portion  84  and a second area portion  85  and the joint  71  is located between the two area portions  84 ,  85 . For example, the area portions  84 ,  85  are building materials, such as tiles. For example, the first area portion  84 , is a tile, a panel, a door frame, a window frame, or a molding. The second area portion  85  is, for example, another tile or a wall. The joint  71  between the area poritions  84 ,  85  may also be referred to as a gap or cavity. 
     The handheld device  10  is exemplarily designed as a cartridge press and/or as a tubular bag press. The handheld device  10  may also be referred to as a filling material container press. The handheld device  10  is used to dispense filling material  72  into the joint  71 . The filling material  72  is, for example, silicone or acrylic. The filling material  72  is expediently held in a filling material container  2 , for example a cartridge or a tubular bag, and dispensed from the filling material container  2  into the joint  71  by means of the handheld device  10 . 
     The handheld device  10  includes a handle assembly  73  for manually gripping the handheld device  10  and moving the handheld device  10  along a joint path  74  (shown in  FIG.  2   ). The handheld device  10  can be carried manually by the user and moved and positioned freely in space manually. The handheld device  10  is not fixed or suspended anywhere. The joint path  74  is the path of the joint  71  in the longitudinal direction of the joint  71 . Exemplarily, the joint path  74  runs in the y-direction—i.e. perpendicular to the drawing plane of  FIG.  1   . 
     The handheld device  10  further comprises a dispensing device  75  for dispensing the filling material  72  into the joint  71 . Exemplarily, the dispensing device  75  comprises a pressing device  3  for pressing the filling material container  2  to cause dispensing of filling material  72  contained in the filling material container  2 . The filling material  72  is dispensed into the joint  71  via a dispensing element  34 , for example an applicator tip. 
     The handheld device  10  further comprises a sensor device  76  configured to detect an influence quantity that influences a body geometry of a filling material body  78 . The filling material body  78  is formed by the filling material  72  dispensed into the joint  71 . The filling material body  78  may also be referred to as a bead. Preferably, the influencing quantity is the handheld device speed v and/or concerns the joint geometry. 
     The handheld device  10  is adapted to adjust a dispensing rate r, at which the dispensing device  75  dispenses the filling material  72 , based on the detected influence quantity. The dispensing rate r is the amount of filling material  72  that is output from the handheld device  10  per unit time. 
     For example, the handheld device  10  has a pressing element  12  for pressing the filling material container  2  to cause the filling material  72  to be dispensed from the filling material container  2 . In particular, the handheld device  10  is adapted to adjust the dispensing rate r by adjusting the speed of the pressing element  12 . For example, the handheld device  10  has an electric drive  16  (see  FIG.  3  or  4   ) for driving the pressing element  12  and is adapted to adjust the speed of the electric drive  16 , for example by adjusting the current supplied to the electric drive  16 , based on the influence quantity to adjust the dispensing rate r. 
     Expediently, the handheld device  10  is configured to continuously detect the influence quantity and continuously adjust the dispensing rate r based on the influence quantity. For example, the handheld device  10  continuously detects the current handheld device speed and/or the current joint geometry and continuously adjusts the current dispensing rate r to the current handheld device speed and/or the current joint geometry. 
     Preferably, the handheld device  10  is configured to adapt the dispensing rate r on the basis of the detected influence quantity in such a way that the filling material body  78  formed by the filling material  72  dispensed into the joint  71  has a predetermined body geometry, in particular a predetermined width b, preferably a constant width b. For example, a specification information is stored in the handheld device  10 , which specifies a body geometry, in particular a width, of the filling material body  78 . The handheld device  10  is configured to adjust the dispensing rate r on the basis of the detected influence quantity and the specification information in such a way that the body geometry of the filling material body  78  corresponds to the specification information. 
     The handheld device  10  is expediently configured to adjust the dispensing rate r on the basis of the influencing quantity in such a way that the dispensing device  75  dispenses a predetermined, in particular constant, amount of filling material per unit length of the joint path  74 . For example, a specification information is stored in the handheld device  10 , which specifies a filling material amount per unit length. The handheld device  10  is configured to adjust the dispensing rate r on the basis of the detected influence quantity and the specification information in such a way that the filling material amount per unit length corresponds to the specification information. 
     According to a preferred embodiment, the influence quantity comprises the handheld device speed v at which the handheld device  10  is moved. The handheld device  10  is configured to detect the handheld device speed v as the influence quantity and to adjust the dispensing rate r based on the handheld device speed v. 
     In particular, the handheld device speed v is the speed of the handheld device  10  relative to the joint path  74 . Expediently, the handheld device  10  comprises a dispensing element  34 , in particular an applicator tip, for dispensing the filling material  72  into the joint  71 . In particular, the handheld device speed v is the speed of the dispensing element  34  relative to the joint path  74 . 
     In particular, the handheld device  10  is configured to adjust the dispensing rate r on the basis of the detected handheld device speed v so that the filling material body  78  has a predetermined body geometry, in particular a predetermined width b, preferably a constant width b, in particular along the joint path  74 . 
       FIG.  2    shows a corresponding adjustment of the dispensing rate r. In  FIG.  5   , the user performs a handheld device movement  86  with the handheld device  10 , in which the handheld device  10  is guided along the joint path  74 , in particular with the dispensing element  34 .  FIG.  5    shows the time curves of the handheld device speed v, the dispensing rate r and the width b of the filling material body  78 . The width b is the width of the filling material body  78  orthogonal to the longitudinal direction of the joint path  74 . The width b is in particular the width of that part of the filling material body  78  which lies above the joint  71  or covers the joint  71 . 
     Preferably, the handheld device  10  is configured to increase the dispensing rate r of the filling material  72  in response to an increasing detected handheld device speed v. Expediently, the handheld device  10  is further configured to reduce the dispensing rate r of the filling material  72  in response to a decreasing detected handheld device speed v. 
     Expediently, the handheld device  10  is configured to provide the dispensing rate r in proportion to the detected handheld device speed v and/or with a monotonic, in particular strictly monotonic, dependence on the handheld device speed v. 
     Thus, the handheld device  10  dispenses the filling material at a higher dispensing rate r at a first detected handheld device speed v than at a second detected handheld device speed v that is lower than the first detected handheld device speed v. 
     Expediently, the handheld device  10  is configured to adjust the dispensing rate r on the basis of the handheld device speed v in such a way that the dispensing device  75  dispenses, along the joint path  74 , a predetermined, in particular constant, amount of filling material per unit length of the joint path  74 . 
     According to a further embodiment, the influence quantity relates to the joint geometry. The handheld device  10  is configured to detect the joint geometry, in particular a joint width, as the influence quantity and to adjust the dispensing rate r on the basis of the detected joint geometry, in particular the joint width. The joint width is in particular the width of the joint  71  orthogonal to the direction of the joint path  74 . 
     Preferably, the handheld device  10  is configured to adjust the dispensing rate r on the basis of the detected joint geometry in such a way that the filling material body  78  has a predetermined body geometry, in particular a predetermined width b, preferably a constant width b. The width b is the width of the filling material body  78  orthogonal to the longitudinal direction of the joint path  74 . The width b is in particular the width of that part of the filling material body  78  which lies above the joint  71  or covers the joint  71 . 
     Preferably, the handheld device  10  is configured to increase the dispensing rate r of the filling material  72  in response to an increasing detected joint width. Expediently, the handheld device  10  is configured to reduce the dispensing rate r of the filling material  72  in response to a decreasing detected joint width. Expediently, the handheld device  10  is configured to provide the dispensing rate r in proportion to the detected joint width and/or with a monotonic, in particular strictly monotonic, dependence on the joint width. 
     Thus, the handheld device  10  dispenses the filling material at a higher dispensing rate r for a first detected joint width than for a second detected joint width that is lower than the first detected joint width. 
     According to a particularly preferred embodiment, the handheld device  10  is configured to take into account both the handheld device speed v and the joint geometry, in particular the joint width, as the influence quantity. The handheld device  10  thus adjusts the dispensing rate r simultaneously on the basis of the handheld device speed v and on the basis of the joint geometry, in particular on the basis of the joint width. The dependency between the dispensing rate r and the handheld device speed v and the dependency between the dispensing rate r and the joint geometry is preferably as described above. 
     The sensor device  76 , by means of which the handheld device  10  detects the influence quantity—i.e. in particular the handheld device speed v and/or the joint geometry—will be discussed in more detail below. 
     Preferably, the sensor device  76  for detecting the influence quantity comprises an accelerometer, an odometry unit, a laser unit, an image sensor, a LIDAR unit, a RADAR unit, and/or a touch sensor. 
     Preferably, the sensor device  76  comprises a first sensor unit  87  by means of which the handheld device speed v is detected. The first sensor unit  87  is designed, for example, to detect the acceleration of the handheld device  10 . The handheld device  10  is configured to calculate the handheld device speed v based on the detected acceleration, in particular by integrating the detected acceleration. The first sensor unit  87  expediently comprises a first sensor element  89 , which is configured, for example, as an acceleration sensor. The first sensor element  89  is expediently arranged at a front end—that is, at that end at which the dispensing element  34  is located—of the handheld device  10 , in particular of a horizontal section  23  of the handheld device  10 . In a purely exemplary manner, the first sensor unit  87  further comprises a second sensor element  90 , which is configured, for example, as an acceleration sensor. The second sensor element  90  is expediently arranged at a rear end—that is, at that end which faces away from the dispensing element  34 —of the handheld device  10 , in particular of the horizontal section  23  of the handheld device  10 . 
     According to an alternative embodiment, the first sensor unit  87 , in particular the first sensor element  89 , is designed as an image sensor. Preferably, the handheld device  10  is configured to record a plurality of sequential images with the first sensor unit  87  and to calculate the handheld device speed v based on the plurality of recorded images. Preferably, the handheld device  10  is further configured to detect the joint geometry, in particular the joint width, based on the plurality of captured images, for example using an image processing algorithm. Thus, the first sensor unit  87  can suitably be used both to detect the handheld device speed v and to detect the joint geometry, in particular the joint width. 
     The first sensor unit  87  can thus, for detecting the handheld device speed, have one or two acceleration sensors (to improve accuracy), an odometry unit (to perform an odometric method), a laser unit (for a laser measurement), and/or an image sensor (for example, an optical camera for an image evaluation). Expediently, the first sensor unit  87  may also comprise a combination of said units. 
     Optionally, the sensor device  76  further comprises a second sensor unit  88  by means of which the joint geometry is detected (in particular in the case in which the joint geometry is not detected by the first sensor unit  87 ). Preferably, the second sensor unit  88  is designed as an image sensor. Suitably, the handheld device  10  is designed to capture a plurality of sequential images with the second sensor unit  88  and to detect the joint geometry, in particular the joint width, on the basis of the plurality of captured images, for example using an image processing algorithm. 
     Thus, the second sensor unit  88  may in particular comprise an image sensor (for example, an optical camera for image evaluation), a laser unit (for example, a line laser), a LIDAR unit, a RADAR unit, and/or a touch sensor (for sensory touch gauges) for detecting the joint geometry. More expediently, the second sensor unit  88  may also comprise a combination of said units. 
     Referring now to  FIG.  3   , a preferred first composition  10 A of the handheld device  10  will be discussed below. 
     According to the first composition  10 A, the handheld device  10  comprises a drive device  7  and an attachment device  8  attached to the drive device  7 . The attachment device  8  is removably attached to the drive device  7 . 
     The attachment device  8  comprises the dispensing device  75  and the drive device  7  is used to drive the dispensing device  75 . For example, the drive device  7  comprises the electric drive  16 , which is coupled to the dispensing device  75  via a mechanical interface. In particular, the electric drive  16  comprises an electric motor with a gear stage. 
     The drive device  7  further comprises a communication device  79  for communication, in particular for data transmission, with an attachment device communication device  96  of the attachment device  8 . Expediently, the attachment device  8  transmits a communication signal to the communication device  79  via the attachment device communication device  96 , which communication signal maps the influence quantity and/or comprises a control signal. The communication may be contact-based, for example via plug contacts or sliding contacts, or wireless, for example via Bluetooth or WLAN. 
     The drive device  7  optionally further comprises an energy interface  91  coupled to an attachment device energy interface  92 , preferably wireless or wired. Via the energy interface  91  and the attachment device energy interface  92 , an energy transmission between the drive device  7  and the attachment device  8  is expediently performed. The energy transmission is preferably an inductive energy transmission. 
     The drive device  7  further comprises an operating device  77 . Via the operating device  77 , the user can expediently start and/or stop the dispensing of filling material  72 . Furthermore, the operating device  77  can be used to enter the specification information. 
     The drive device  7  further comprises an energy storage device  49 , for example a rechargeable battery and/or a battery, which is used to supply energy to the handheld device  10 , in particular to the electric drive  16 . 
     The drive device  7  further comprises a control unit  48  comprising, for example, at least one microcontroller. The control unit  48  is communicatively connected to the operating device  77 , the energy interface  91 , the electric drive  16 , the communication device  79  and/or the energy storage device  49 . The control unit  48  is configured, for example, to control the electric drive  16  based on the communication signal from the attachment device  8  to adjust the dispensing rate r according to the influence quantity. 
     The attachment device  8  optionally comprises an attachment device energy storage device  93 , in particular an accumulator and/or a battery, for (in particular additional) energy supply of the attachment device  8 . 
     The attachment device  8  further comprises an attachment device operating device  95  through which the user can enter, for example, the specification information. 
     The attachment device  8  further comprises the sensor device  76  for detecting the influence quantity. 
     The attachment device  8  further comprises a display unit  81  for displaying status information and/or specification information concerning the dispensing of the filling material  72 . The status information indicates, for example, how much filling material  72  is present in the filling material container  2  and/or how much filling material  72  has already been dispensed. In particular, the display unit  81  comprises a scale and/or a graphical display. The status information may comprise one or more operating parameters, for example a cartridge fill level, a consumption quantity and/or applied and/or remaining running meters. 
     The attachment device  8  further comprises an attachment device control unit  94  comprising, for example, at least one microcontroller. The attachment device control unit  94  is communicatively connected to the attachment device energy interface  92 , the attachment device energy storage device  93 , the attachment device operating device  95 , the sensor device  76 , the display unit  81 , the attachment device communication device  96 , and/or the dispensing device  75 . In particular, the attachment device control unit  94  is adapted to calculate the communication signal, in particular the control signal, on the basis of the detected influence quantity and to output it to the attachment device communication device  96  for transmission to the drive device  7 . 
     The attachment device  8  may expediently be provided alone, i.e. without the drive device  7 . The attachment device  8  is for detachably attaching to the drive device  7  to form the handheld device  10  for dispensing the filling material  72  into the joint  71 . The attachment device  8  comprises the dispensing device  75  drivable by the drive device  7  for dispensing the filling material  72  into the joint  71 , and the sensor device  76  adapted to detect an influence quantity affecting a body geometry of a filling material body  78  formed by the filling material  72  dispense into the joint  71 . The attachment device  8  is adapted to provide, based on the detected influence quantity, the control signal to the drive device  7  to control the drive of the dispensing device  75  to adjust the dispensing rate r at which the dispensing device  75  dispenses the filling material. 
     Expediently, the communication device  79  and/or the attachment device communication device  96  is designed to communicate with an external device  97  and/or a cloud server  98 , for example, to receive the specification information. The communication is preferably wired or wireless, in particular via Bluetooth or WLAN. The external device  97  is, for example, an Internet-of-Things device, a cell phone, a computer, or a tablet. 
       FIG.  4    shows a second possible composition  10 B of the handheld device  10 . According to the second composition  10 B, the handheld device  10  is designed as an integrated device. In particular, according to the second composition  10 B, the handheld device  10  does not comprise a removable attachment device. According to the second composition  10 B, the handheld device  10  comprises the dispensing device  75 , the electric drive  16 , the control unit  48 , the display unit  81 , the operating device  77 , the sensor device  76 , the communication device  79 , and/or the energy storage device  49 . Expediently, said units of the composition  10 B are formed as explained above (or below). Expediently, said units of the composition  10 B are arranged in a common housing. For example, according to the second composition  10 B, the electric drive  16 , the dispensing device  75  and/or the sensor device  76  are arranged in a common housing. Said units of the composition  10 B are expediently interconnected by wire. The control unit  48  is expediently wire-connected to the sensor device  76 , and is preferably configured to control the electric drive  16  on the basis of the influence quantity detected with the sensor device  76 , in order to adjust the dispensing rate r. 
     In the following, the specification information will be discussed in more detail. The specification information specifies, for example, the desired body geometry, in particular the desired width, of the filling material body to be achieved by adjusting the dispensing rate r. Furthermore, the specification information may specify a desired amount of filling material per unit length to be achieved by adjusting the dispensing rate r. The specification information can also specify whether only the handheld device speed v, only the joint geometry or both the handheld device speed v and the joint geometry are to be taken into account as influence quantity. The specification information can be expediently entered into the handheld device  10  via the operating device  77  or the attachment device operating device  95 . Further, the specification information may be received from the handheld device  10  via the communication device  79  or the attachment device communication device  96 , for example, from the external device  97  and/or the cloud server  98 . The handheld device  10  is adapted to take the specification information into account when adjusting the dispensing rate r. 
     According to a preferred embodiment, the handheld device  10  is configured to record the consumption of filling material as filling material consumption information. Preferably, the handheld device  10  is configured to store the filling material consumption information in association with an identifier of a filling material container  2 . Expediently, several different filling material containers  2  are used (successively and/or alternately) with the handheld device  10 , each filling material container  2  having a different identifier. The handheld device  10  expediently records for each filling material container  2  its own filling material consumption information in association with the respective identifier. Expediently, the handheld device  10  is adapted to store the filling material consumption information in association with location information concerning the location where the consumption takes place. The handheld device  10  is adapted to display the filling material consumption information on the display unit  81  (for example, together with the identifier and/or the location information) and/or is adapted to transmit the filling material consumption information to the external device  97  and/or the cloud server  98  (for example, together with the identifier and/or the location information). Based on the filling material consumption information, for example, a billing of the consumed filling material can be performed. 
     According to another preferred embodiment, the handheld device  10  is configured to provide a cutting opening information, wherein the cutting opening information represents a recommendation to the user for a cutting of an applicator tip of the handheld device  10  to be performed by the user. The cutting opening information is displayed, for example, via the display unit  81 . Expediently, the handheld device  10  is adapted to generate the cutting opening information based on the specification information and/or to adjust the dispensing rate r in consideration of the cutting opening information. 
     In particular, the handheld device  10  is designed as an intelligent cartridge press which always produces a constant previously defined body geometry independently of the pulling speed (i.e. the handheld device speed v), and optionally independently of the gap geometry (i.e. the joint geometry). Expediently, the relative handheld device speed v of the applicator tip to the substrate, for example the processing area  83 , is directly measured or calculated by one or more sensors of the sensor device  76 , and from this the dispensing rate r required for a constant line density or constant body geometry is continuously calculated and set. 
     Before starting work, the user sets the desired standard joint dimension manually, for example via the specification information, and cuts the applicator tip accordingly. If necessary, the applicator tip can be cut to size in a defined manner using an auxiliary tool. In addition, the cutting opening for optimum material output can be output as a recommendation note via the display unit  81 . The user positions the applicator tip at the gap geometry (i.e. the joint  71 ), starts the handheld device  10 , in particular the electric drive  16 , and pulls the handheld device  10  at any desired pulling speed (i.e. the handheld device speed v) along the joint path  74 . In doing so, the handheld device  10  always applies the correct amount of filling material by adjusting the dispensing rate r. To complete the creation of the filling material body, the handheld device  10  is stopped by the user. The user then shapes and smoothes the filling material body. 
     Further exemplary features of the handheld device  10  will be discussed below: 
     The handheld device  10  comprises a receptacle  1  (see  FIG.  5   ) for a filling material container  2 . The filling material container  2  is exemplarily designed as a cartridge. Alternatively, the filling material container can be designed as a tubular bag. 
       FIGS.  1  and  6    show the handheld device  10  with a filling material container  2  inserted in the receptacle  1 . Here, the handheld device  10  includes the filling material container  2 . The handheld device  10  can also be provided without the filling material container  2  inserted (cf.  FIG.  5   ). 
     The basic shape of the handheld device  10  comprises a horizontal section  23  and a vertical section  24 . The horizontal section  23  is elongated and oriented with its longitudinal axis parallel to the x-direction. The vertical section  24  is attached to the bottom of the horizontal section  23  and, starting from the horizontal section  23 , extends downwardly, in particular vertically downwardly. Exemplarily, the basic shape of the handheld device  10  comprises the horizontal section  23  and the vertical section  24 . Exemplarily, the handheld device  10  has a T-shaped basic shape. 
     The horizontal section  23  includes the receptacle  1 , the dispensing device  75 , and/or optionally a stabilizing handle  5  of the handle assembly  73 . The vertical section  24  includes a carrying handle  4  of the handle assembly  73 . 
     In an exemplary embodiment, the handheld device  10  comprises a shaft section  25 . In an exemplary embodiment, the shaft section  25  is elongated and oriented with its longitudinal axis parallel to the x-direction. The shaft section  25  is part of the horizontal section  23 ; expediently, the shaft section  25  is the front longitudinal section of the horizontal section  23 . The shaft section  25  comprises the receptacle  1 , which is arranged in particular on the upper side of the shaft section  25 . On the shaft section  25 , in particular on the underside of the shaft section  25 , the stabilizing handle  5  is expediently arranged. 
     In an exemplary embodiment, the handheld device  10  includes a drive section  26 . In an exemplary embodiment, the drive section  26  is provided by the vertical section  24 . In particular, the drive section  26  is configured to provide the drive of the dispensing device  75 . The drive section  26  comprises the electric drive  16 , in particular an electric motor, for driving the dispensing device  75 . 
     Exemplarily, the handheld device  10  comprises a drive device  7  for a screwing and/or drilling power tool. The drive device  7  is expediently the drive section  26 . The drive device  7  can be used in particular as a screwdriving and/or drilling power tool, for example as a cordless screwdriver. The drive device  7  is expediently detachable from the handheld device  10 , and (in particular after attachment of a tool, for example a drill or a screwdriver blade) usable for screwing and/or drilling. The drive device  7  is comprises the carrying handle  4 . 
     The handheld device  10  comprises the attachment device  8 . The attachment device  8  expediently comprises the shaft section  25 . Exemplarily, the attachment device  8  is the horizontal section  23 . The attachment device  8  is attached, in particular detachably attached, to the drive section  26 , in particular the drive device  7 . The attachment device  8  comprises the stabilizing handle  5 . The attachment device  8  is expediently configured as a cartridge press attachment device. The attachment device  8  can also be designed as a tubular bag press attachment device. 
     The drive section  26 , in particular the drive device  7 , comprises a drive interface  27  for providing a drive rotary motion, which is generated in particular by means of the electric drive  16 . The attachment device  8  comprises a receiving interface  28  for receiving the input rotary motion provided at the drive interface  27 . The attachment device  8  is connected with the receiving interface  28  to the drive interface  27  of the drive section  26 . 
     Preferably, the attachment device  8  is rotatable relative to the drive device  7  about an axis of rotation aligned parallel to the longitudinal direction of the handheld device  10 . Exemplarily, the handheld device  10  comprises a pivot bearing by means of which the attachment device  8  is mounted on the drive device  7  so as to be rotatable about the axis of rotation  9 . Expediently, the attachment device  8  can be rotated by means of the pivot bearing in an angular range of at least 100 degrees, in particular at least 140 degrees, relative to the drive device  7 . 
     The receptacle  1  is designed to receive the filling material container  2 . The receiving base  29  of the receptacle  1  is shaped in particular to correspond to the shape of the filling material container  2 . Exemplarily, the filling material container  2  has a cylindrical, in particular circular-cylindrical, shape. The receiving base  29  defines a cylindrical segment-shaped receptacle recess which corresponds to the cylindrical shape of the filling material container  2  and into which the cylindrical filling material container  2  can be inserted. In particular, the receptacle  1  is groove-shaped. Exemplarily, the receptacle  1  is designed as a half-shell, in particular as a half-shell open towards the top. The receptacle  1  can also be referred to as an open receptacle  1 . 
       FIG.  7    shows an exemplary embodiment of the filling material container  2 . The filling material container  2  comprises the container body  32 , which is shaped in particular cylindrically, preferably circular-cylindrically. Exemplarily, the container body  32  is hollow cylindrical in shape. The longitudinal axis of the container body  32  is aligned parallel to the x-direction. The container body  32  has a front end face  38  and a rear end face  39 , each of which is suitably oriented perpendicular to the x-direction. The rear end face  39  is suitably configured to be open in the x-direction, so that a receiving space  37  (for receiving a pressing element  12 ) is accessible via the rear end face  39 . The receiving space  37  is bounded in the radial direction by a rear hollow cylindrical body section  41  of the container body  32 . Furthermore, the receiving space  37  is bounded in the negative x-direction by a particularly disc-shaped pressing section  36 . In the positive x-direction, the receiving space  37  is open. The receiving space  37  is in particular cylindrical. 
     The filling material container  2  is preferably designed as a cartridge, in particular as a joint sealant cartridge, for example as a silicone cartridge or acrylic cartridge. The filling material container  2  comprises a filling material chamber  35  arranged in the container body  32 , in which the filling material  72  to be dispensed is located. The filling material  72  is in particular joint sealant, for example silicone or acrylic. 
     The filling material container  2  comprises a dispensing element  34 , which is designed in particular as an applicator tip and is expediently aligned with its longitudinal axis parallel to the x-direction. The dispensing element  34  is arranged at the front end face  38 . The filling material container  2  further comprises the pressing section  36  which, when pressed, reduces the filling material chamber  35  so that the filling material  72  is dispensed from the filling material container  2  by the dispensing element  34 . The pressing section  36  is disposed at the rear end face  39  and/or is accessible through the rear end face  39 . 
     In particular, the pressing section  36  is movable in the (negative) x-direction to effect the dispensing of the filling material. The negative x-direction shall also be referred to as the forward direction, and the positive x-direction shall be referred to as the reverse direction. Exemplarily, the pressing section  36  is disc-shaped. The pressing section  36  is inserted into the hollow cylindrical container body  32  and is movable in the x-direction relative to the hollow cylindrical container body  32  to reduce the filling material chamber  35 . The pressing section  36  may also be referred to as a piston member or a base, in particular a cartridge base. On the side of the pressing section  36  facing away from the filling material chamber  35 , there is the receiving space  37  for receiving the pressing element  12  of the pressing device  3 . 
     The dispensing device  75  expediently comprises the filling material container  2 . The dispensing device  75  further comprises the pressing device  3  for pressing the filling material container  2  to cause dispensing of filling material  72  contained in the filling material container  2 . Expediently, the pressing device  3  further serves to lock the filling material container  2  in the receptacle  1  so that the filling material container  2  cannot be removed from the receptacle  1 . 
     The pressing device  3  comprises a pressing element  12 , by means of which the pressing section  36  can be pressed (in negative x-direction) in order to cause the filling material  72  to be dispensed from the filling material chamber  35 . The pressing element  12  further serves to support the filling material container  2  (inserted into the receptacle  1  and applied against a front stop structure  31 ) in (positive) x-direction and/or radial direction (in particular z-direction and/or y-direction) and to thus lock the filling material container  2  in the receptacle  1 ; i.e., in particular to fix it in the receptacle  1  in such a way that the filling material container  2  cannot be removed from the receptacle  1 . 
     The pressing element  12  comprises, by way of example, a pressing head  42  which can be inserted into the receiving space  37  and/or can be placed directly against the pressing section  36 . The pressing head  42  is exemplarily designed as a press plunger and has in particular a disk-shaped end section. In the (positive) x-direction, a rod section  43  adjoins the pressing head  42 . The rod section  43  is designed in particular as a spindle  18  and expediently has a thread, in particular an external thread. The rod section  43  is aligned with its longitudinal axis parallel to the x-direction. 
     The horizontal section  23  of the handheld device  10  may also be referred to as the pressing section. The horizontal section  23  comprises the shaft section  25  already explained above. The horizontal section  23  further comprises a rear longitudinal section  44  adjoining the shaft section in (positive) x-direction. Exemplarily, the rear longitudinal section  44  extends in (positive) x-direction behind the drive section  26 , in particular behind the carrying handle  4 . The rear longitudinal section  44  serves in particular to receive the rod section  43  of the pressing element  12 . 
     The pressing device  3  further comprises a drive mechanism for driving the pressing element  12 . The drive mechanism serves to drive the pressing element  12  in the forward direction, so as to cause the filling material  72  to be dispensed from the filling material container  2 . In particular, the drive mechanism is configured to convert the rotational drive motion provided by the drive section  26 , in particular the electric drive  16 , into a linear motion of the pressing element  12 . The linear movement is in particular a forward movement, expediently in the (negative) x-direction. 
     The drive mechanism includes a drive element  17  which is coupled to the pressing element  12  and which is used to drive the pressing element  12 . The drive element  17  is capable of being set in an output rotational motion based on the input rotational motion (provided by the drive section  26 ), and is adapted to set the pressing element  12  in the linear motion based on the output rotational motion. Exemplarily, the drive element  17  has teeth on its outer periphery. Furthermore, the drive element  17  has a central aperture on which an internal thread is provided. The drive element  17  may also be referred to as a spindle nut, a gear, or a spindle nut gear. The spindle  18  of the pressing element  12  extends through the central aperture. The spindle  18  has its external thread in engagement with the internal thread of the drive element  17 , so that the spindle  18  is set in linear motion when the drive element  17  rotates. 
     The drive mechanism further comprises a coupling gear  45  through which the drive element  17  is coupled to the drive section  26 . The coupling gear  45  engages the teeth of the drive element  17 . Exemplarily, the coupling gear  45  has a smaller diameter than the drive element  17 . Exemplarily, the coupling gear  45  is arranged below the drive element  17  in the z-direction. The coupling gear  45  is non-rotatably coupled to an output shaft  46  of the receiving interface  28 . Exemplarily, the coupling gear  45  is arranged coaxially with the output shaft  46 . The output shaft  46  is oriented parallel to the x-direction. The output shaft  46  is coupled to the drive section  26 , in particular via the receiving interface  28  to the drive interface  27 , and is set into the output rotational movement by the input rotational movement provided by the drive section  26 . The output rotary motion is transmitted to the drive element  17  via the coupling gear  45 . 
     The handheld device  10  comprises an operating device  77 . The operating device  77  comprises an operating element  47 , by means of which the drive of the pressing element  12  can be controlled—and thereby the dispensing of the filling material  72  from the filling material container  2 . In particular, the operating element  47  can be used to start and/or stop the dispensing of the filling material  72 . In particular, the operating element  47  is designed as a button, expediently as a trigger button or pistol trigger. The operating element  47  is arranged on the carrying handle  4 , in particular at the upper end of the carrying handle  4 . The operating element  47  is operable by the first hand of the user, in a state in which the user grips the carrying handle  4  with the first hand. The operating element  47  is communicatively coupled to a control unit  48 , via which the electric drive  16  is controlled. 
     The handheld device  10  includes the carrying handle  4 . The carrying handle  4  allows the handheld device  10  to be carried and guided by a first hand of a user to position the handheld device  10  at a desired position when dispensing the filling material  72 . 
     The carrying handle  4  is exemplarily part of the vertical section  24 , in particular of the drive section  26 . The carrying handle  4  is exemplarily designed as a pistol grip. The longitudinal axis of the carrying handle  4  is oriented vertically, in particular in the z-direction or in the x-z-direction. The carrying handle  4  is grippable about its longitudinal axis. The carrying handle  4  is arranged in the rear region of the handheld device  10 . The carrying handle  4  is preferably at least 8 cm long (in the direction of its longitudinal axis). 
     The handheld device  10  further comprises a stabilizing handle  5 . The stabilizing handle  5  allows the handheld device  10  to be gripped by a second hand of the user and stabilized during dispensing of the filling material  72 , in particular while the user is gripping the carrying handle  4  with his first hand. The stabilizing handle  5  is exemplarily arranged further forward (i.e. further in negative x-direction) than the carrying handle  4 .