Construction site audio playback device

Abstract

The invention relates to a construction site audio reproduction device, in particular a construction site radio, having at least one audio reproduction unit (12a; 12b; 12c), having an energy storage unit (14a; 14b; 14c) for supplying the audio reproduction unit (12a; 12b; 12c) with energy, and having a housing (16a; 16b; 16c) for accommodating the audio reproduction unit (12a; 12b; 12c) and the energy storage unit (14a; 14b; 14c). It is proposed that the construction site audio playback device has a functional frame unit (18a; 18b; 18c) which is designed separately from the housing (16a; 16b; 16c) and which can be detachably connected to the housing (16a; 16b; 16c), which has at least one frame (20a; 20b; 20c) which, when mounted on the housing (16a; 16b; 16c), at least partially surrounds the housing (16a; 16b; 16c), and which comprises at least one functional element (26a, 26'a; 24b, 24'b, 26b, 26'b; 24c, 26c, 26'c).

Description

State of the art

[0001] A construction site audio reproduction device, in particular a construction site radio, having at least one audio reproduction unit, having an energy storage unit for supplying the audio reproduction unit with energy and having a housing for accommodating the electrical functional unit and the energy storage unit has already been proposed. Disclosure of the invention

[0002] The invention is based on a construction site audio reproduction device, in particular a construction site radio, with at least one audio reproduction unit, with an energy storage unit for supplying the audio reproduction unit with energy and with a housing for accommodating the audio reproduction unit and the energy storage unit.

[0003] It is proposed that the construction site audio playback device comprise a functional frame unit formed separately from the housing and detachably connectable to the housing. The functional frame unit comprises at least one frame that, when mounted on the housing, at least partially surrounds the housing and comprises at least one functional element. The functional frame unit is preferably detachably mountable on the outside of the housing. The functional element is preferably arranged on the frame. The functional element is preferably rigidly connected to the frame.

[0004] In this context, a "construction site audio playback device" should be understood to mean, in particular, a playback device for audio playback, such as, in particular, music playback. The construction site audio playback device is preferably formed by a construction site radio. However, it would also be conceivable for the construction site audio playback device to be formed, for example, by a Bluetooth and / or WLAN loudspeaker. The construction site audio playback device is preferably suitable and intended for use on a construction site by virtue of fall, dust, and / or water protection. The construction site audio playback device preferably comprises an analog and / or digital radio receiver. The housing serves, in particular, to protect and accommodate the audio playback unit and the energy storage unit. The housing is, in particular, formed by a plastic housing.However, another housing design that would appear sensible to a person skilled in the art would also be conceivable. The housing is preferably formed by a protective housing. A “protective housing” should be understood in particular to mean a housing that protectively surrounds at least one electronic component of the construction site audio playback device arranged in an interior of the construction site audio playback device. In particular, the protective housing connects and / or fastens various components of the construction site audio playback device. The protective housing is preferably intended to protect the electronic components of the construction site audio playback device in the event of a fall from a height of at least 1 m in such a way that no functional restrictions arise. Advantageously, the radio housing protects the interior against environmental influences at least in accordance with protection class IP53, advantageously at least in accordance with protection class IP55.However, it is also conceivable that the radio housing does not have a protection class.

[0005] Furthermore, in this context, an "audio playback unit" should be understood in particular as a unit designed to process and reproduce audio signals. The audio playback unit preferably comprises electronics, in particular with a signal receiver and an amplifier, and at least one loudspeaker. A "control and / or regulating unit" should be understood in particular as a unit with at least one control electronics unit. "Control electronics" should be understood in particular as a unit with a processor unit and a memory unit, as well as with an operating program stored in the memory unit.

[0006] In this context, an “energy storage unit” should be understood to mean, in particular, an accumulator. The accumulator can be formed either by a permanently installed accumulator or by a removable battery. If the energy storage unit is designed as a removable battery, the construction site audio playback device has, in particular, a battery interface. A “battery interface” should be understood to mean, in particular, an interface that is intended to receive electrical energy from the removable battery, in particular a hand tool battery. Preferably, the battery interface is intended to mechanically fasten the removable battery, in particular a hand tool battery. Preferably, the battery interface is partially formed in one piece with the radio housing, in particular a part of the battery interface that mechanically fastens the removable battery, in particular the hand tool battery.However, a multi-part design would also be conceivable. "Coupling" should be understood in particular as establishing a functional connection. The construction site audio playback device preferably has a battery receiving area which serves to spatially accommodate the replaceable battery at the battery interface. The replaceable battery is formed in particular by a hand tool battery. A "hand tool battery" should be understood in particular as a battery which is intended to supply at least one hand tool with energy, in particular during an intended use. Preferably, the hand tool battery is connected to the hand tool in an operational state in a detachable manner, in particular without the need for tools.

[0007] In this context, a "functional frame unit" is understood to mean, in particular, a frame unit that at least partially surrounds the housing and has at least one additional function. The functional frame unit preferably has a frame and a functional element, wherein the functional element is at least partially integrated into the frame. The frame is, in particular, self-supporting and serves, in particular, to provide additional stiffening and / or protection for the housing. Preferably, the frame is formed, in particular, by a protective frame for mechanical protection of the housing.The functional element can, for example, have an additional protective function and / or a connecting function, in particular a mechanical connecting function, and / or an amplifying function, such as a mechanical amplifying function and / or a reception amplifying function, and / or a fastening function and / or a carrying function, such as in particular a design as a carrying handle.

[0008] The inventive design of the construction site audio playback device makes it possible to provide, in particular, a construction site audio playback device that is advantageously flexibly adaptable. The construction site audio playback device can preferably be adapted to the mechanical loads that may act on the construction site radio depending on the specific characteristics of the trade. Furthermore, a high degree of flexibility can be provided for the construction site audio playback device with regard to its robustness. The functional frame unit can, in particular, be designed differently and adapted to the specific characteristics of the trade. Furthermore, an additional function can be provided on the frame, particularly advantageously.

[0009] It is further proposed that the functional element be formed by a coupling element for a detachable connection to a tool case system. In this context, a “tool case system” is to be understood as meaning in particular a system, in particular various tool cases and / or further cases, which can be directly detachably connected to one another. By means of the tool case system, tool cases in particular can be assembled to form a tool case stack. The tool cases of the tool case system in particular have at least approximately the same base area. However, it would also be conceivable for several sizes of tool cases to exist within the tool case system with regard to base area. The tool cases of the tool case system in particular have at least approximately the same base area, with a height of the tool cases varying.Various tool case systems that a professional would consider appropriate, such as L-Boxx and / or Systainer, are conceivable. A tool case of the tool system can, for example, be designed in accordance with DE 10 2012 218 601 A1.

[0010] Furthermore, in this context, a “coupling element” should be understood in particular as an element for a direct, detachable connection with a coupling element, in particular a coupling point of a tool case of a tool case system. The coupling element is preferably intended to establish a detachable, positive-locking connection with a coupling element of a tool case. The coupling element is preferably intended to establish a latching connection. The coupling element preferably forms a latching unit together with the coupling element of the tool case. The coupling element is in particular pivotably mounted. “Positive-locking” should be understood in particular as meaning that abutting surfaces of components that are positively connected to one another exert a holding force on one another in the normal direction of the surfaces. In particular, the components are in geometric engagement with one another.A "locking unit" is to be understood in particular as a unit with at least one locking element that is elastically deflected during a fastening process and then locks behind a corresponding locking element due to an internal clamping force. This allows the construction site audio playback device to be attached particularly advantageously to a tool case system. This can in particular enable advantageous transport of the construction site audio playback device. In particular, full design flexibility can be enabled for the construction site audio playback device, in particular for the housing, wherein the construction site audio playback device is simultaneously compatible with a tool case system. In particular, construction site radios can be retrofitted. At the same time, users who do not require compatibility can remove the functional frame unit.

[0011] Furthermore, it is proposed that the functional element be formed by a pivotably mounted coupling element which has at least one positive-locking and / or locking element for engaging with an interface of the tool case system and at least one operating element for releasing the connection. The functional element preferably has at least one locking hook which is intended to lock into locking recesses of the tool case system in a connected operating state. It would also be conceivable for the functional frame unit to have locking recesses which are intended to accommodate locking hooks of a further tool case system module. Preferably, the coupling element is pivotally mounted on the frame, in particular spring-loaded. The functional element is preferably formed in one piece. The functional element consists in particular of a lever onto which the at least one positive-locking and / or locking element is directly formed.“Integral” should be understood in particular to mean at least materially connected, for example by a welding process, an adhesive process, an injection molding process and / or another process that appears appropriate to a person skilled in the art, and / or advantageously formed in one piece, such as by production from a single casting and / or by production using a single-component or multi-component injection molding process and advantageously from a single blank. Preferably, the functional frame unit comprises in particular two functional elements, each formed by a pivotably mounted coupling element, wherein the functional elements are each arranged on opposite sides of the construction site audio playback device. However, it would also be conceivable for the functional frame unit to have only one functional element formed by a pivotably mounted coupling element.This allows the construction site audio playback device to be easily and detachably attached to a tool case system, particularly advantageously. This allows for convenient transport of the construction site audio playback device.

[0012] It is further proposed that the functional frame unit have, on a side opposite the functional element, a rigid connecting element for connection to a tool case system. The rigid connecting element has, in particular, at least one form-fitting extension which is intended to engage in an interface of the tool case system. Preferably, the form-fitting extension is intended to engage in a locking recess of a tool case system. The connection is released, in particular, via the opposite functional element, which is formed by a pivotably mounted coupling element. Preferably, the rigid connecting element is, in particular, firmly connected to the frame. Particularly preferably, the rigid connecting element is formed integrally with the frame. This advantageously allows the number of moving parts to be kept low.

[0013] It is further proposed that the frame of the functional frame unit comprises at least two sub-frames, each of which is detachably connected to the housing on opposite sides of the housing. Preferably, the sub-frames each protrude beyond the housing in at least two directions. Preferably, the sub-frames each form a protective bar which extends at least partially around the housing. In particular, the sub-frames are each formed by a protective bar which is partially arranged next to the housing, wherein a maximum extension, in particular extent, of the protective bar in at least one plane, in particular in a plane perpendicular to a longitudinal axis of the construction site audio playback device, is greater than a maximum extension, in particular extent, of the housing in the plane. Alternatively, the frame can also comprise more than two sub-frames.The sub-frames can enclose the entire housing or protect only particularly sensitive parts of the construction site audio playback device, such as a display or an HMI. The sub-frames can be attached to the housing using detachable connections, such as screw connections or plug-in connections. All connections are directly accessible, meaning the housing of the construction site audio playback device does not have to be opened to install the sub-frames. The sub-frames can be made of plastic, metal, or a mixture / composite of different materials. The sub-frames can also be designed to dampen mechanical impact, reducing stress on the housing itself. The sub-frames can also be constructed to increase the resistance of the construction site audio playback device to environmental influences, e.g., the ingress of dust, objects, or water.This makes it possible to provide, in particular, a functional frame unit that is advantageously easy to assemble.

[0014] It is further proposed that the functional element be arranged on a first sub-frame of the frame of the functional frame unit and that the rigid connecting element be arranged on a second sub-frame of the frame of the functional frame unit. The functional element and the rigid connecting element are arranged in particular on opposite sides of the construction site audio playback device. The rigid connecting element in particular has at least one form-fitting extension, which is intended to engage in an interface of the tool case system. Preferably, the form-fitting extension is intended to engage in a locking recess of a tool case system. The connection is released in particular via the opposite functional element, which is formed by a pivotably mounted coupling element. This advantageously allows the number of moving parts to be kept low.This in turn makes it possible to provide an advantageously robust construction site audio playback device.

[0015] Furthermore, it is proposed that the functional element be formed by a protective element for mechanical protection of the housing. Preferably, the protective element is formed integrally, in particular as a single piece, with the frame, in particular with at least one of the partial frames. The protective element serves in particular to mechanically protect the housing. Preferably, the protective element is provided in particular to absorb shocks. In addition, it would also be conceivable for the protective element to be additionally provided to provide electrostatic and / or IP protection, in particular against splash water and / or dust. The protective element is formed in particular by a protective bar or protective cage. Alternatively, the protective element could also be designed as a shock-absorbing element that is arranged on the frame. Advantageously, the term “integral” should also be understood to mean “one-piece”."One-piece" is understood to mean, in particular, molded in one piece. This one piece is preferably produced from a single blank, a mass, and / or a cast, particularly preferably using an injection molding process, in particular a single- and / or multi-component injection molding process. This makes it possible to provide, in particular, advantageous protection for the construction site audio playback device. In particular, it makes it possible to expand the construction site audio playback device, whereby, in particular, the protection of the construction site audio playback device can be further improved.

[0016] It is further proposed that the functional element be formed integrally, in particular as a single piece, with the frame of the functional frame unit and be formed by a protective bracket. The protective element serves, in particular, to mechanically protect the housing. Preferably, the protective element is intended, in particular, to absorb impacts. This makes it possible to provide, in particular, advantageous protection for the construction site audio playback device. In particular, an expansion of the construction site audio playback device can be enabled, whereby, in particular, protection of the construction site audio playback device can be further improved.

[0017] It is further proposed that the functional frame unit has at least two functional elements, each formed by a protective bar, and which, when the functional frame unit is mounted on the housing, are arranged on opposite sides of the housing. The frame of the functional frame unit preferably has at least two sub-frames, wherein the functional elements are each arranged on one of the sub-frames. Preferably, one sub-frame and one functional element are each formed as a single piece. The sub-frames each form, in particular, a protective bar. This makes it possible, in particular, to provide advantageous protection for the construction site audio playback device. In particular, an extension of the construction site audio playback device can be enabled, wherein, in particular, protection of the construction site audio playback device can be further improved.

[0018] It is further proposed that the functional frame unit has at least a first functional element, which is formed by a coupling element for a detachable connection to a tool case system, and at least a second functional element, which is formed by a protective element for mechanical protection of the housing. In particular, a combination of functional elements can also be made possible. Preferably, the coupling element is provided to establish a detachable, positive-locking connection with a coupling element of a tool case. Preferably, the coupling element is provided to establish a latching connection. Preferably, the coupling element forms a latching unit together with the coupling element of the tool case. The functional element designed as a protective element is formed in particular by a protective bracket.This makes it possible, in particular, to provide advantageous protection for the construction site audio playback device. Furthermore, the construction site audio playback device can be attached to a tool case system in a particularly advantageous manner. This makes it possible, in particular, to facilitate advantageous transport of the construction site audio playback device. In particular, it makes it possible to expand the construction site audio playback device modularly.

[0019] It is further proposed that the first functional element be movably, in particular pivotably, mounted on the second functional element. The second functional element is formed, in particular, by a protective bracket on which the first functional element, designed as a coupling element, is directly pivotably mounted. This makes it possible, in particular, to provide advantageous protection for the construction site audio playback device. Furthermore, the construction site audio playback device can thereby be attached, in particular advantageously, to a tool case system. This makes it possible, in particular, to advantageously transport the construction site audio playback device. In particular, a modular expansion of the construction site audio playback device can be made possible.

[0020] Furthermore, the invention is based on a functional frame unit for the construction site audio playback device. The functional frame unit can be attached to the housing of the construction site audio playback device in a modular manner. It would be particularly conceivable for various functional frame units to be provided.

[0021] The construction site audio playback device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the construction site audio playback device according to the invention may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a functionality described herein. Furthermore, in the value ranges specified in this disclosure, values ​​within the stated limits are also to be considered disclosed and can be used arbitrarily. drawing

[0022] Further advantages will become apparent from the following description of the drawings. The drawings illustrate three exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0023] They show: Fig. 1 shows a construction site audio playback device according to the invention with a housing and with a functional frame unit, which has a frame and two functional elements, in a schematic exploded view, Fig. 2 an alternative construction site audio playback device according to the invention with a housing and with a functional frame unit, which has a frame and four functional elements, in a schematic exploded view, Fig. 3 shows a partial section of the alternative construction site audio playback device according to the invention with the housing and with the functional frame unit, and a tool case of a tool case system in a schematic representation, Fig. 4 shows a further alternative construction site audio playback device according to the invention with a housing and with a functional frame unit, which has a frame and three functional elements, in a schematic sectional view, Fig. 5 the further alternative construction site audio playback device according to the invention with the housing and with the functional frame unit, and a tool case of a tool case system in a first coupling step and Fig. 6 the further alternative construction site audio playback device according to the invention with the housing and with the functional frame unit, and a tool case of a tool case system in a second coupling step. Description of the embodiments

[0024] Fig. Figure 1 shows a schematic exploded view of a construction site audio playback device 10a. The construction site audio playback device 10a is formed by a construction site radio. However, another design of the construction site audio playback device 10a that would be deemed appropriate by a person skilled in the art would also be conceivable.

[0025] The construction site audio playback device 10a has a housing 16a. The housing 16a has a substantially cuboidal basic shape. The housing 16a is formed from a plastic housing. The construction site audio playback device 10a further has an audio playback unit 12a. The audio playback unit 12a comprises an electronics unit 40a with a radio receiver, an audio processor, and an amplifier. Furthermore, the audio playback unit 12a comprises, for example, two loudspeakers 42a. The audio playback unit 12a can further have additional loudspeakers. The loudspeakers 42a are integrated into the housing 16a. A region of the housing 16a accommodating the loudspeakers 42a is rounded, deviating from the cuboidal basic shape. Furthermore, the construction site audio playback device 10a has an energy storage unit 14a for supplying the audio playback unit 12a with energy.The energy storage unit 14a has a rechargeable battery. Various embodiments of the energy storage unit 14a that would appear appropriate to a person skilled in the art are conceivable. The energy storage unit 14a can, for example, have an integrated rechargeable battery. Alternatively or additionally, the energy storage unit 14a can have a rechargeable battery interface (not shown in detail). The rechargeable battery interface is provided, in particular, for receiving a replaceable rechargeable battery of the energy storage unit 14a in a way that can be removed without tools. The rechargeable battery interface is particularly suitable for receiving different replaceable rechargeable batteries, in particular also replaceable rechargeable batteries with different voltage classes. The energy storage unit 14a is provided, in at least one operating state, for supplying power to the audio playback unit 12a.The construction site audio playback device 10a further comprises a network operation interface (not shown in detail), which is intended to be connected to an external power grid. The housing 16a accommodates the audio playback unit 12a and the energy storage unit 14a.

[0026] Furthermore, the construction site audio playback device 10a has a functional frame unit 18a that is formed separately from the housing 16a and can be detachably connected to the housing 16a. The functional frame unit 18a can be detachably arranged on the outside of the housing 16a. The functional frame unit 18a has a frame 20a that, when mounted on the housing 16a, at least partially surrounds the housing 16a. The frame 20a is provided as a protective frame for mechanically protecting the housing 16a. The frame 20a of the functional frame unit 18a comprises at least two sub-frames 38a, 38'a. The frame 20a of the functional frame unit 18a comprises, for example, exactly two sub-frames 38a, 38'a that are formed separately from one another. The subframes 38a, 38'a are each detachably connected to the housing 16a on opposite sides of the housing 16a. The subframes 38a, 38'a are arranged in front of and behind the housing 16a along a main extension direction of the housing 16a.The subframes 38a, 38'a are each connected to the housing 16a via a screw connection. The subframes 38a, 38'a are each mirror-symmetrical to one another. The subframes 38a, 38'a each have a W-shape in a plan view, with the two outer ends supported on the housing 16a and the subframes 38a, 38'a being detachably screwed to the housing 16a in a center. The subframes 38a, 38'a are each connected to the housing 16a via at least two screws 50a. Alternatively or additionally, other detachable connecting means are also conceivable, such as locking elements or the like. The subframes 38a, 38'a each consist of two W-shaped frame elements 44a, 44'a, 46a, 46'a, which are connected to one another via struts 48a, 48'a.In this case, a first frame element 44a, 44'a of the subframes 38a, 38'a is arranged above the housing 16a, and a second frame element 46a, 46'a of the subframes 38a, 38'a is arranged below the housing 16a. However, a different shape of the subframes 38a, 38'a that would be deemed appropriate by a person skilled in the art would also be conceivable. The subframes 38a, 38'a are each formed in one piece, in particular in one piece.

[0027] Furthermore, the functional frame unit 18a comprises at least one functional element 26a, 26'a. The functional frame unit 18a comprises, for example, exactly two functional elements 26a, 26'a. The functional elements 26a, 26'a are each formed by a protective element for mechanical protection of the housing 16a. The functional elements 26a, 26'a are each formed by a protective bracket, which is formed integrally with a frame 20a of the functional frame unit 18a. The functional elements 26a, 26'a are formed integrally, in particular in one piece, with the frame 20a of the functional frame unit 18a and are formed by a protective bracket. The functional frame unit 18a has two functional elements 26a, 26'a, each formed by a protective bracket, and which, when the functional frame unit 18a is mounted on the housing 16a, are arranged on opposite sides of the housing 16a.The functional elements 26a, 26'a, together with the subframes 38a, 38'a, are each formed by a protective bar, which is partially arranged next to the housing 16a, wherein a maximum extension, in particular extent, of the protective bar in at least one plane, in particular in a plane perpendicular to a longitudinal axis of the construction site audio playback device 10a, is greater than a maximum extension, in particular extent, of the housing 16a in the plane. The frame 20a projects beyond the housing 16a in all directions. The functional elements 26a, 26'a serve to mechanically protect the housing 16a. The functional elements 26a, 26'a, together with the frame 20a, are intended to absorb shocks. The subframes 38a, 38'a of the frame 20a and the functional elements 26a, 26'a are each formed as a single piece. A first subframe 38a of the subframes 38a, 38'a is formed in one piece with the first functional element 26a.A second subframe 38'a of the subframes 38a, 38'a is formed integrally with the second functional element 26'a. The subframes 38a, 38'a each form a protective bar. Alternatively, however, it would also be conceivable for the functional elements 26a, 26'a to each be formed by a shock-absorbing element integrated into the subframes 38a, 38'a.

[0028] Alternatively or additionally, the functional elements 26a, 26'a can also have a carrying or transporting function. The functional elements 26a, 26'a partially form a handle element with a handle area 60a. At least one of the struts 48a, 48'a of the subframes 38a, 38'a each forms a handle area 60a.

[0029] The functional elements 26a, 26'a can enclose the entire housing 16a or protect only particularly sensitive parts of the construction site audio playback device 10b, such as the display or the HMI. The functional elements 26a, 26'a are attached to the housing 16a via detachable connections. All connections are directly accessible; the housing 16a does not need to be opened to install the functional elements 26a, 26'a. The material of the functional elements 26a, 26'a can be plastic, metal, or a mixture / composite of different materials. The functional elements 26a, 26'a can also be designed to dampen mechanical impact, reducing stress on the housing 16a itself. The functional elements 26a, 26'a can also be designed to increase the resistance of the construction site audio playback device 10a to environmental influences, e.g., the ingress of dust, objects, or water.

[0030] In the Fig. Two further embodiments of the invention are shown in Figures 2 to 6. The following descriptions and the drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference is also made to the drawings and / or the description of the other embodiments, in particular to the Fig. 1. To distinguish the embodiments, the letter a is added to the reference numerals of the embodiment in the Fig. 1. In the examples of the Fig. 2 to 6, the letter a is replaced by the letters b and c.

[0031] Fig. Figure 2 shows a schematic exploded view of a construction site audio playback device 10b. The construction site audio playback device 10b is formed by a construction site radio.

[0032] The construction site audio playback device 10b has a housing 16b. Furthermore, the construction site audio playback device 10b has a functional frame unit 18b that is formed separately from the housing 16b and detachably connectable to the housing 16b. The functional frame unit 18b can be detachably arranged on the outside of the housing 16b. The functional frame unit 18b has a frame 20b that, when mounted on the housing 16b, at least partially surrounds the housing 16b. The frame 20b is provided as a protective frame for mechanically protecting the housing 16b. The frame 20b of the functional frame unit 18b comprises at least two sub-frames 38b, 38'b. The frame 20b of the functional frame unit 18b comprises, for example, exactly two sub-frames 38b, 38'b that are formed separately from one another. The subframes 38b, 38'b are each detachably connected to the housing 16b on opposite sides of the housing 16b.

[0033] Furthermore, the functional frame unit 18b comprises at least one functional element 24b, 24'b, 26b, 26'b. The functional frame unit 18b comprises, for example, exactly two first functional elements 24b, 24'b and two second functional elements 26b, 26'b. The second functional elements 26b, 26'b are each formed by a protective element for mechanical protection of the housing 16b. The second functional elements 26b, 26'b are each formed by a protective bracket, which is formed in one piece with a frame 20b of the functional frame unit 18b. The second functional elements 26b, 26'b are formed in one piece, in particular in one piece, with the frame 20b of the functional frame unit 18b and are formed by a protective bracket.The functional frame unit 18b has two second functional elements 26b, 26'b, each formed by a protective bar, which, when the functional frame unit 18b is mounted on the housing 16b, are arranged on opposite sides of the housing 16b. The second functional elements 26b, 26'b, together with the subframes 38b, 38'b, are each formed by a protective bar, which is arranged partially adjacent to the housing 16b, wherein a maximum extension, in particular dimension, of the protective bar in at least one plane, in particular in a plane perpendicular to a longitudinal axis of the construction site audio playback device 10b, is greater than a maximum extension, in particular dimension, of the housing 16b in the plane.

[0034] The first functional elements 24b, 24'b are each formed by a coupling element for a detachable connection with a tool case system 28b.

[0035] The first functional elements 24b, 24'b are each designed to establish a detachable, positive-locking connection with a coupling element 52b of a tool case 54b of the tool case system 28b. The first functional elements 24b, 24'b are each designed to establish a latching connection. The first functional elements 24b, 24'b, together with the coupling element 52b of the tool case 54b, each form a latching unit. The first functional elements 24b, 24'b are formed by a pivotably mounted coupling element that has at least one positive-locking and / or latching element 30b, 30'b for engaging an interface 32b of the tool case system 28b and at least one operating element 34b for releasing the connection.The first functional elements 24b, 24'b each have two locking elements 30b, 30'b in the form of locking hooks, which are designed to engage, in a connected operating state, in locking recesses of an interface 32b of the tool case 54b of the tool case system 28b. The first functional elements 24b, 24'b are spring-loaded and pivotally mounted on the frame 20b. The locking element 30b, 30'b and the operating element 34b of the same first functional element 24b, 24'b are each integrally connected to one another (. Fig. 3).

[0036] One of the first functional elements 24b, 24'b is arranged on the first subframe 38b, while the second of the first functional elements 24b, 24'b is arranged on the second subframe 38'b. The first functional elements 24b, 24'b are pivotally mounted on the subframes 38b, 38'b. The first functional elements 24b, 24'b each additionally have, for example, a rigid base body 56b, 56'b, which is directly connected to one of the subframes 38b, 38'b and which pivotably supports the operating element 34b of the respective first functional element 24b, 24'b. The operating elements 34b are each mounted, for example, directly on the base bodies 56b, 56'b and, via the base bodies 56b, 56'b, on the subframes 38b, 38'b. The base bodies 56b, 56'b are connected to the subframes 38b, 38'b via the screws 50b.

[0037] The functional frame unit 18b has two first functional elements 24b, 24'b, each formed by a coupling element for a detachable connection to a tool case system 28b, and two second functional elements 26b, 26'b, each formed by a protective element for mechanical protection of the housing 16b. The first functional elements 24b, 24'b are each pivotally mounted on one of the second functional elements 26b, 26'b.

[0038] The functional frame unit 18b can be flexibly adapted to the outer shape of the housing 16b and releasably attached to the housing 16b. The functional frame unit 18a can also be used to compensate for length differences between the tool case system 28b and the housing 16a. This is necessary because the tool case system 28b predefines fixed distances between the connection points.

[0039] Fig. Figure 4 shows a schematic exploded view of a construction site audio playback device 10c. The construction site audio playback device 10c is formed by a construction site radio.

[0040] The construction site audio playback device 10c has a housing 16c. Furthermore, the construction site audio playback device 10c has a functional frame unit 18c that is formed separately from the housing 16c and detachably connectable to the housing 16c. The functional frame unit 18c can be detachably arranged on the outside of the housing 16c. The functional frame unit 18c has a frame 20c that, when mounted on the housing 16c, at least partially surrounds the housing 16c. The frame 20c is provided as a protective frame for mechanically protecting the housing 16c. The frame 20c of the functional frame unit 18c comprises at least two sub-frames 38c, 38'c. The frame 20c of the functional frame unit 18c comprises, for example, exactly two sub-frames 38c, 38'c that are formed separately from one another. The subframes 38c, 38'c are each detachably connected to the housing 16c on opposite sides of the housing 16c.

[0041] Furthermore, the functional frame unit 18c comprises at least one functional element 24c, 26c, 26'c. The functional frame unit 18c comprises, for example, exactly one first functional element 24c and two second functional elements 26c, 26'c. The second functional elements 26c, 26'c are each formed by a protective element for mechanical protection of the housing 16c. The second functional elements 26c, 26'c are each formed by a protective bracket, which is formed integrally with a frame 20c of the functional frame unit 18c. The second functional elements 26c, 26'c are formed integrally, in particular in one piece, with the frame 20c of the functional frame unit 18c and are formed by a protective bracket.The functional frame unit 18c has two second functional elements 26c, 26'c, each formed by a protective bar, which, when the functional frame unit 18c is mounted on the housing 16c, are arranged on the housing 16c on opposite sides of the housing 16c. The second functional elements 26c, 26'c, together with the subframes 38c, 38'c, are each formed by a protective bar, which is arranged partially next to the housing 16c, wherein a maximum extension, in particular dimension, of the protective bar in at least one plane, in particular in a plane perpendicular to a longitudinal axis of the construction site audio playback device 10c, is greater than a maximum extension, in particular dimension, of the housing 16c in the plane.

[0042] The first functional element 24c is formed by a coupling element for a detachable connection to a tool case system 28c. The first functional element 24c is intended to establish a detachable, positive-locking connection with a coupling element 52c of a tool case 54c of the tool case system 28c. The first functional element 24c is intended to establish a latching connection. The first functional element 24c, together with the coupling element 52c of the tool case 54c, forms a latching unit. The first functional element 24c is formed by a pivotably mounted coupling element, which has at least one positive-locking and / or latching element 30c for engaging an interface 32c of the tool case system 28c and at least one operating element 34c for releasing the connection.The first functional element 24c has two locking elements 30c in the form of locking hooks, which are designed to engage in locking recesses of the interface 32c of the tool case 54c of the tool case system 28c in a connected operating state. The operating element 34c is spring-loaded and pivotally mounted on the frame 20c. The locking element 30c and the operating element 34c of the first functional element 24c are integrally connected to one another.

[0043] The first functional element 24c is arranged on the first subframe 38c. The first functional element 24c additionally has a rigid base body 56c, 56'c, which is directly connected to the first subframe 38c and which pivotably supports the operating element 34c of the first functional element 24c. The operating element 34c is mounted, for example, directly on the base body 56c and, via the base body 56c, on the subframe 38c. The base body 56c is connected to the first subframe 38c via a screw 50c.

[0044] The functional frame unit 18c has two first functional elements 24c, each formed by a coupling element for a detachable connection to a tool case system 28c, and two second functional elements 26c, 26'c, each formed by a protective element for mechanical protection of the housing 16c. The first functional elements 24c are each pivotally mounted on one of the second functional elements 26c, 26'c.

[0045] In addition, the functional frame unit 18c has locking recesses 58c, 58'c, which are intended to receive locking hooks of another tool case system module. The locking recesses 58c, 58'c are arranged on an upper side of the functional frame unit 18c. The functional frame unit 18c has two first inwardly directed locking recesses 58c, which are arranged on the first sub-frame 38c on a side facing away from the first functional element 58c. Furthermore, the functional frame unit 18c has two further inwardly directed locking recesses 58'c, which are arranged opposite the first locking recesses 58c on the second sub-frame 38'c.

[0046] Furthermore, the functional frame unit 18c has, on a side opposite the first functional element 24c, a rigid connecting element 36c for connection to a tool case system 28c. The rigid connecting element 36c has at least one positive-locking extension, which is intended to engage in an interface 32c of the tool case 54c of the tool case system 28c. The rigid connecting element 36c has two positive-locking extensions. The rigid connecting element 36c has two pins. The positive-locking extensions are intended to engage in locking recesses of the interface 32c of the tool case 54c of the tool case system 28c. The connection is released in particular via the opposite first functional element 24c. The rigid connecting element 36c is firmly connected to the second sub-frame 38c.The rigid connecting element 36c is arranged on a side of the second sub-frame 38'c facing away from the second locking recesses 58'c.

[0047] The first functional element 24c is arranged on the first subframe 38c of the frame 20c of the functional frame unit 18c. Furthermore, the rigid connecting element 36c is arranged on a second subframe 38'c of the frame 20c of the functional frame unit 18c.

[0048] The Fig. 5 and Fig. 6 show the construction site audio playback device 10c when attached to the tool case 54c. During attachment, the rigid connecting element 36c is inserted into the locking recesses of one of the interfaces 32c of the tool case 54c ( Fig. 5). The construction site audio playback device 10c can then be pivoted downwards so that the locking elements 30c of the first functional element 24c engage in the locking recesses of the further interface 32c of the tool case 54c ( Fig. 6). When the rigid connecting element 36c is inserted into the interface 32c, the construction site audio playback device 10c is locked on the other side via the first functional element 24c in the further interface 32c of the tool case 54c. The area on the product that is freed by the omission of the second first functional element 24c can be used here for a flap, behind which there is storage space. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2012 218 601 A1

[0009]

Claims

[1] Construction site audio playback device, in particular construction site radio, with at least one audio playback unit (12a; 12b; 12c), with an energy storage unit (14a; 14b; 14c) for supplying the audio playback unit (12a; 12b; 12c) with energy and with a housing (16a; 16b; 16c) for accommodating the audio playback unit (12a; 12b; 12c) and the energy storage unit (14a; 14b; 14c), characterized by a functional frame unit (18a; 18b; 18c) formed separately from the housing (16a; 16b; 16c) and detachably connectable to the housing (16a; 16b; 16c), which has at least one frame (20a; 20b; 20c) which, when mounted on the housing (16a; 16b; 16c), at least partially encompasses the housing (16a; 16b; 16c), and which comprises at least one functional element (26a, 26'a; 24b, 24'b, 26b, 26'b; 24c, 26c, 26'c). [2] Construction site audio playback device according to claim 1, characterized bythat the at least one functional element (24b, 24'b; 24c) is formed by a coupling element for a detachable connection to a tool case system (28b; 28c). [3] Construction site audio playback device according to claim 2, characterized by in that the at least one functional element (24b, 24'b; 24c) is formed by a pivotably mounted coupling element which has at least one positive-locking and / or locking element (30b, 30'b; 30c) for engaging in an interface (32b; 32c) of the tool case system (28b; 28c) and at least one operating element (34b, 34'b, 34c) for releasing the connection. [4] Construction site audio playback device according to one of the preceding claims, characterized by that the functional frame unit (18c) has, on a side opposite the functional element (24c), a rigid connecting element (36c) for connection to a tool case system (28c). [5] Construction site audio playback device according to one of the preceding claims, characterized by that the frame (20a; 20b; 20c) of the functional frame unit (18a; 18b; 18c) comprises at least two sub-frames (38a, 38'a; 38b, 38'b; 38c, 38'c), which are each detachably connected to the housing (16a; 16b; 16c) on opposite sides of the housing (16a; 16b; 16c). [6] Construction site audio playback device at least according to claim 4 and 5, characterized by that the functional element (24c) is arranged on a first sub-frame (38c) of the frame (20c) of the functional frame unit (18c) and the rigid connecting element (36c) is arranged on a second sub-frame (38'c) of the frame (20c) of the functional frame unit (18c). [7] Construction site audio playback device according to one of the preceding claims, characterized bythat the functional element (26a, 26'a; 26b, 26'b; 26c, 26'c) is formed by a protective element for mechanical protection of the housing (16a; 16b; 16c). [8] Construction site audio playback device according to claim 7, characterized by that the functional element (26a, 26'a; 26b, 26'b; 26c, 26'c) is formed in one piece, in particular in one part, with the frame (20a; 20b; 20c) of the functional frame unit (18a; 18b; 18c) and is formed by a protective bracket. [9] Construction site audio playback device according to claim 7 or 8, characterized by that the functional frame unit (18a; 18b; 18c) has at least two functional elements (26a, 26'a; 26b, 26'b; 26c, 26'c), which are each formed by a protective bracket, and which, in a state of the functional frame unit mounted on the housing (16a; 16b; 16c), are arranged on the housing (16a; 16b; 16c) on opposite sides of the housing (16a; 16b; 16c). [10] Construction site audio playback device according to one of the preceding claims, characterized by that the functional frame unit (18b; 18c) has at least one first functional element (24b, 24'b; 24c), which is formed by a coupling element for a detachable connection to a tool case system (28b; 28c), and at least one second functional element (26b, 26'b; 26c, 26'c), which is formed by a protective element for mechanical protection of the housing (16a; 16b; 16c). [11] Construction site audio playback device according to claim 10, characterized by that the first functional element (24b, 24'b; 24c) is movably, in particular pivotably, mounted on the second functional element (26b, 26'b; 26c, 26'c). [12] Functional frame unit of a construction site audio reproduction device (10a; 10b; 10c) according to one of the preceding claims.

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