Pressing device

Abstract

Pressing device, in particular an electrohydraulic or electromechanical pressing device for pressing a workpiece, comprising a housing, wherein a tool holder is arranged at a first end of the housing, a see-through display is arranged on the housing, and one or more symbols are displayed by the see-through display.

Description

[0001] October 8, 2025

[0002] Press office

[0003] The present invention relates to a pressing device, in particular an electrohydraulic or electromechanical pressing device for pressing a workpiece.

[0004] Common pressing tools consist of a housing containing a drive unit. The pressing tool also has a tool holder for a pressing tool. The drive unit moves a piston within a piston assembly, which interacts with the pressing tool to generate a pressing force. For this purpose, the drive unit includes an electric motor. The movement of the electric motor is transmitted to the piston either mechanically, in an electromechanical pressing tool, or hydraulically via a hydraulic pump to generate the desired pressing force.

[0005] Modern pressing tools have a wide range of functions and internal sensors to monitor their correct operation. This necessitates communication with the user, allowing the tool to display operating modes, states, and other relevant information. This is typically achieved in conventional pressing tools via a display or indicator LEDs. However, indicator LEDs have limited capabilities for representing different operating states and / or modes. If the indicator LEDs are color-coded, the user must interpret the LED's color, which can lead to misinterpretations or incorrect operation.

[0006] Furthermore, it is possible to use several such indicator LEDs or even an entire display, such as an LED display or OLED display, or the like. However, increasing the number of such indicator LEDs and using an entire display also means an increased [unclear - possibly referring to a specific issue or problem]. October 8, 2025

[0007] 2

[0008] Number of points where dirt or water can penetrate the housing of the crimping tool. This can lead to malfunctions or defects of the crimping tool.

[0009] The object of the present invention is to create a pressing device in which the pressing device is reliably protected against the ingress of dirt and water.

[0010] The problem is solved by a pressing device according to claim 1.

[0011] The pressing device according to the invention is in particular designed as an electrohydraulic or electromechanical pressing device for pressing a workpiece. The pressing device has a housing, with a tool holder provided at a first end of the housing. A pressing tool is connected to the tool holder, either detachably or alternatively permanently. The pressing tool transmits a pressing force generated by the pressing device to the workpiece. Furthermore, a see-through display is arranged on the housing, through which one or more symbols can be displayed. The see-through display serves to indicate the operating states and / or operating modes of the pressing device. Since this is a see-through display, it does not create an opening in the housing.This was specifically avoided so that no dirt or water could penetrate the housing through the protruding see-through display. This makes it possible to provide multiple symbols and improved machine user interaction without creating additional points on the housing where dirt or water could enter.

[0012] Preferably, the pressing device has a pistol shape. The housing forms a grip area, which is angled towards the... 8 October 2025

[0013] 3 is formed above the part of the housing connected to the tool holder. Alternatively, the pressing device has a cylindrical housing, with a tool holder at one end of the housing and a battery holder at the opposite end for a battery that supplies power to the pressing device. In this case, the housing has a so-called "rod shape".

[0014] Preferably, the housing incorporates a grip area. This allows the user to grasp the pressing tool in the grip area for use.

[0015] Preferably, the gripping area of ​​the cylindrical housing has a reduced diameter or circumference to allow the user to grasp it with one hand. Thus, the gripping area is defined in particular by a region of reduced diameter, which simplifies handling the pressing tool and enables a secure grip and operation of the pressing tool.

[0016] Preferably, the grip area of ​​the housing is provided with a rubber coating or other non-slip material. This allows for a secure grip on the crimping tool, even when wearing gloves. In particular, the grip area can be defined by such a rubber coating and / or other non-slip material.

[0017] Preferably, the see-through display is arranged between the grip area and the battery compartment.

[0018] Preferably, the pressing device has a top and a bottom. In particular, an operating element, such as a push button, is arranged on the top of the pressing device. Specifically, the operating element serves to activate the pressing device or to start a pressing operation. Likewise, October 8, 2025

[0019] 4

[0020] A see-through display is positioned on the top of the pressing device, so that the see-through display is always visible to the user when using the pressing device.

[0021] Preferably, the see-through display has one or more light elements and a cover that conceals the one or more light elements, with light from the light elements passing through the cover to display the one or more symbols. In particular, the cover completely conceals the one or more light elements, so that no openings are created in the housing at the location of the see-through display through which dirt or water could penetrate the housing of the press tool. Preferably, the see-through display has exactly one cover that conceals all the light elements of the see-through display, thus reducing the number of housing elements and, in particular, the number of contact joints or connecting edges of the housing, which could potentially affect the housing's sealing.

[0022] Preferably, the cover is at least partially, and in particular, completely translucent. This allows light from one or more luminaires to pass through the cover to display one or more symbols. In particular, the cover is not transparent, so that the one or more luminaires are not visible from the outside. Specifically, the one or more luminaires are not visible when they are not emitting light. Here, "translucent" describes a property of the cover that allows light to pass through only partially. "Partially" here refers to a range of 10% to 90%, preferably 20% to 80%, and particularly preferably 30% to 70% of the light that can be transmitted through the cover. This applies in particular to the wavelengths of the light from the one or more luminaires and preferably to the wavelength range of visible light with a wavelength of 450 nm to 800 nm. October 8, 2025

[0023] 5

[0024] Preferably, the cover is integrally formed with the housing or formed in one piece with the housing. This avoids contact joints or connecting edges between the housing and the see-through display, resulting in a particularly tight housing and preventing, in particular, dirt and water from penetrating the housing.

[0025] Preferably, the cover is rigid. Therefore, it is not a membrane keyboard or a flexible display. Because it is rigid, the cover can be part of the housing and, in particular, protect the electronics underneath from damage.

[0026] Preferably, the cover is made of the same material as the housing. Since the housing must meet high stability requirements, it is advantageous to also manufacture the cover from this material, thus ensuring mechanical protection of the see-through display and preventing damage. This way, no sensitive components, such as an LCD display, are located directly on an outer surface of the press tool. Instead, the cover protects the one or more light elements, which may be sensitive components.

[0027] Preferably, the cover is made of plastic. In particular, the outer surface of the cover visible to the user is made of plastic. Therefore, it is not a glass display that can be damaged by external influences.

[0028] Preferably, the cover has the same surface structure as the housing, or at least a part of the housing. In particular, the cover and housing thus have at least partially the same surface finish. Here - October 8, 2025

[0029] 6. This ensures that the cover and at least part of the housing have the same or a similar feel, and / or that the cover and at least part of the housing have a similar or identical appearance. This guarantees a uniform appearance for the pressing tool. In particular, the same surface structure ensures consistent grip even in the area of ​​the see-through display.

[0030] Preferably, the cover is essentially flat. Thus, the cover forms a flat or even housing part. "Essentially" here means that the cover can follow the curvature of the housing. Furthermore, the cover can have a surface texture as described above. In particular, the cover is flat in the sense that it has no protrusions and, especially, that the symbols shown do not stand out from the surface of the cover.

[0031] In particular, the cover is indistinguishable from the housing from the outside. This is especially true when the one or more light elements are not activated and do not generate light to display the one or more symbols. Therefore, if no symbol is displayed through the see-through display, it is not visible from the outside. This can be achieved, for example, as already explained above, by using the same material and / or the same surface texture. The absence of a contact joint between the cover and the rest of the housing, in the case of a one-piece design of the cover and housing, also contributes to this indistinguishability. In particular, the see-through display does not create any area of ​​the crimping tool that requires special attention from the user regarding its sensitivity during operation.Rather, the user can operate the pressing tool as if it had no display, since the see-through display protects sensitive parts with its cover. October 8, 2025.

[0032] 7

[0033] Preferably, the cover has areas of reduced thickness, allowing the light from one or more luminaires to shine through. The cover is designed such that it has a reduced thickness in the area of ​​the symbols to be displayed, thus creating translucency. In particular, these areas have a shape corresponding to the symbol to be displayed. This allows the use of an unstructured luminaire that generates light. Only the light from this luminaire shines through the cover in the areas of reduced thickness, allowing the corresponding symbol to be visible from the outside. This makes it easy to incorporate the symbols, especially during the injection molding of the housing. Furthermore, simple luminaires can be used, with the appropriately shaped areas enabling the representation of complex symbols.

[0034] Preferably, the respective lighting element is a surface-mounted lighting element. For example, surface-mounted spotlights such as surface-mounted LEDs can be used.

[0035] In particular, the respective lighting element is a light-emitting diode (LED).

[0036] Preferably, the one or more light elements are a pixel display such as an LCD, LED, OLED, or similar device. This allows the symbols to be easily generated by the pixel display and then shine through the cover. The pixel display is protected from damage during use of the pressing device by the cover. October 8, 2025

[0037] - 8 -

[0038] Preferably, one light element is provided for each symbol or symbol element to be displayed. Here, symbol elements correspond to individual components of a symbol, which is formed by the combination of the respective symbol elements. For example, a symbol representing the charge level of a battery can have several charge bars, each of which is generated as a symbol element by a separate light element.

[0039] Preferably, individual symbols or symbol elements are separated by bridges. These bridges extend towards the interior of the housing, with the respective light elements arranged within the bridges. This prevents optical blurring of the individual symbols, as light from a light element of one symbol does not reach the area of ​​another symbol and is blocked by the respective bridge. This ensures that the displayed symbols are clearly recognizable to the user.

[0040] The invention will now be explained in more detail with reference to preferred embodiments and the accompanying figures.

[0041] They show:

[0042] Figure 1 shows a pressing device according to the present invention,

[0043] Figure 2 shows a first example of a see-through display according to the present invention,

[0044] Figure 3 shows another example of a see-through display according to the present invention,

[0045] Figure 4 shows further examples of symbols depicted on a see-through display and October 8, 2025

[0046] 9

[0047] Figure 5 shows the cover of a see-through display from below.

[0048] The pressing device according to Figure 1 has a housing 12 with a grip area 16. At a first end, the housing 12 has a tool holder 18 to which a pressing tool 20 is detachably or permanently connected for pressing a workpiece. At an opposite second end of the housing 12, a battery holder is arranged for receiving a battery 14 to power the pressing device 10. A see-through display 22 is arranged between the grip area 16 and the battery holder. In Figure 2, the see-through display 22 is shown with exemplary symbols 24, 26. The see-through display 22 has a cover 23, which is integrally connected to the housing 12 to avoid a contact joint or connecting edge.In the example shown in Figure 2, the see-through display 22 is arranged in a recessed area of ​​the housing 12 to protect the surface of the cover 23 from damage caused by the protruding edges of the housing 12. The cover of the see-through display 22 has no openings. Furthermore, the cover of the see-through display 22 is made of the same material as the housing and, in particular, has the same surface structure. The cover 23 of the see-through display 22 has a translucency in one or more areas, allowing light elements located beneath the cover to shine through and generate the symbols. Figure 2 shows a symbol 24 as an example of a crimping indicator, which indicates incomplete crimping, and an indicator 24 that displays the charge level of the battery 14.Figure 3 shows another crimp indicator 28, which indicates successful crimping. Further symbols 30 are shown in Figure 4, representing a warning symbol, a temperature symbol, an unlocking symbol, a maintenance symbol, a tool symbol, or an interconnectivity symbol (for example, a Bluetooth symbol). October 8, 2025.

[0049] 10 represents. However, this only represents examples, so other or further symbols can also be displayed by the see-through display 22. The arrangement of the symbols is also only exemplary, and the present invention is not limited to this.

[0050] In this case, at least one and, in particular, exactly one lighting element is provided for each of the additional symbols, so that the light from the respective lighting element creates precisely the additional symbols.

[0051] Figure 5 shows the cover 23 of the see-through display 22 from below, with ribs 44 arranged to separate areas 46 of the individual symbols from each other, so that light used to generate a symbol is not visible in adjacent areas.

[0052] The lighting elements for the symbols can be provided, for example, by LEDs or surface-mounted LEDs. Complex symbols, such as the injection indicators 26, 28 shown in Figures 2 and 3, can be provided, for example, by LED arrays or pixel displays, so that the individual symbol elements of the injection indicators 26, 28 can be generated by the individual LEDs of the LED array or pixels of the pixel display.

[0053] Thus, the present invention provides a crimping tool that allows improved communication with the user without compromising the housing's sealing. In particular, the see-through display 22 of the present invention does not create an opening through which dirt or water could penetrate the housing and cause damage or a defect in the crimping tool.

Claims

October 8, 2025 11 Claims 1. Pressing device, in particular an electro-hydraulic or electromechanical pressing device for pressing a workpiece, with a housing, wherein a tool holder is arranged at a first end of the housing, wherein a see-through display is arranged on the housing, wherein one or more symbols are displayed through the see-through display.

2. Pressing device according to claim 1, characterized in that the see-through display has one or more light elements and a cover that covers the one or more light elements, wherein light from the light elements passes through the cover to display the one or more symbols.

3. Pressing device according to claim 2, characterized in that the cover is at least partially translucent.

4. Pressing device according to claim 2 or 3, characterized in that the cover is integrally formed with the housing.

5. Pressing device according to one of claims 2 to 4, characterized in that the cover is made of the same material as the housing.

6. Pressing device according to one of claims 2 to 5, characterized in that the cover has the same surface structure as the housing. October 8, 2025 12 7. Pressing device according to one of claims 2 to 6, characterized in that the cover is indistinguishable from the housing from the outside.

8. Pressing device according to one of claims 2 to 7, characterized in that the cover has areas of low thickness so that the light from one or more lighting elements can shine through.

9. Pressing device according to claim 8, characterized in that the areas have a shape that corresponds to the symbol to be displayed.

10. Pressing device according to one of claims 1 to 9, characterized in that the respective lighting element is a surface lighting element.

11. Pressing device according to one of claims 1 to 10, characterized in that the one or more light elements are formed by a pixel display.

12. Pressing device according to one of claims 1 to 11, characterized in that one lighting element is provided for each symbol or symbol element to be displayed.

13. Pressing device according to one of claims 1 to 12, characterized in that individual symbols or symbol elements are separated by bridges.

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