Non-contact voltage tester

Abstract

A non-contact voltage tester (100) is disclosed, comprising a probe (120) for detecting electromagnetic field induction, a power supply (130), a housing (110) and a closure cap (140), wherein the housing (110) has a receptacle (114) for a power carrier (132) of the power supply (130) and a closure (116) for receiving the closure cap (140). It is proposed that the closure cap (140) and the closure (116) be screwed together in a multi-start manner.

Description

[0001] The present invention relates to a non-contact voltage tester according to the preamble of claim 1. State of the art

[0002] Non-contact voltage testers (NCVTs) are designed to detect electrical voltage fields in wiring and equipment without requiring direct contact with the live conductor. They are widely used in electrical engineering to ensure the safety of professionals and users by providing a quick and easy way to detect the presence of dangerous voltages. To ensure proper functioning, a non-contact voltage tester performs a self-test of its components. Disclosure of the invention

[0003] The present invention relates to a non-contact voltage tester comprising a probe for detecting electromagnetic field induction, a power supply, a housing, and a cap, wherein the housing has a receptacle for a power source of the power supply and a closure for receiving the cap. It is proposed that the cap and the closure be screwed together with multiple threads.

[0004] The invention provides a non-contact voltage tester that increases user comfort. For example, the number of screw turns required to tighten the cap is reduced. At the same time, the cap diameter can remain consistent. Furthermore, over-tightening of the cap thread is prevented.

[0005] The non-contact voltage tester can be handheld, allowing the user to hold it in one hand. The housing can be a shell-shaped or pot-shaped design. The housing can be elongated and essentially cuboid. The housing at least partially encompasses the probe, the power supply, and the closure. The closure has at least one thread. It can also be designed as a hollow cylinder. The thread of the closure can be formed on an outer circumference. The closure can have a male or female thread, with a female thread shown here as an example. The housing includes the receptacle for the energy source. The energy source can be replaceable. For example, the energy source can be a battery or a rechargeable battery.The energy carrier can be shaped, for example, like an AA or AAA battery or rechargeable battery. The probe is designed to detect electromagnetic field induction. The probe measures electrical voltages using electromagnetic or electric field induction. The probe can be connected to a microcontroller, which can at least process received data. The microcontroller can process the probe's measurements and, upon detecting a voltage, provide an optical, acoustic, and / or mechanical indication of the detected voltage via an output device. The probe can be shaped, for example, like a pen or a truncated cone. The power supply is designed to provide the voltage tester with electrical energy. The power supply can utilize the energy carrier.The power supply is designed to provide electrical energy to at least the microcontroller and / or the output devices. The housing may include the output devices. The output devices may be designed to display the measured values ​​or measurement results. The cap is designed to close the power supply unit. Furthermore, the cap is designed to close an electrical contact between the power source and the voltage tester. For this purpose, the cap may include a contact element. The cap may have a thread, the thread of which is compatible with the thread of the closure. The cap and the closure are designed to be screwed together. The cap may, for example, be cup-shaped or bowl-shaped. The cap may be positioned opposite the probe on the housing.Furthermore, the cap can have a male or female thread; in this case, for example, a male thread is used. The cap and the closure are designed for multi-start screw connections. "Multi-start" here means that the screw thread has several threads and multiple thread starts. The multi-start connection can be continuous or segmented. Additionally, the multi-start connection can have a hard stop, which can also be part of the thread of the closure and / or the cap. The cap can have multiple engagement points with the thread of the closure.

[0006] In one embodiment of the voltage tester, the multi-start screw connection of the cap and the closure has at least two thread pitches. A thread pitch is the distance between two threads of the same thread. The thread pitches can be the same, so that each thread has the same pitch. However, the thread pitches can also be different, so that one thread has a first thread pitch and another thread has a further thread pitch. More than two thread pitches are also conceivable.

[0007] In one embodiment of the voltage tester, the multi-start screw connection of the cap and the closure has at least two thread pitches. A thread pitch is the degree of rotation of a thread during a single thread turn. The thread pitches can be the same, so that each thread has the same pitch. Alternatively, the thread pitches can be different, so that one thread has a first thread pitch and another thread has a further thread pitch. More than two thread pitches are also conceivable.

[0008] In one embodiment of the voltage tester, the cap has a first and second thread. The threads of the cap can be located on an inner or outer circumference. The threads can be formed on the cap itself or be integral to it. It is conceivable that the cap has only one thread, engaging with the first and / or second thread of the cap via this single thread. It is also conceivable that the cap has more than two threads.

[0009] In one embodiment of the voltage tester, the closure has a first and second thread. The threads of the closure can be located on an inner or outer circumference of the closure. The threads can be formed on the closure itself or be integral to it. It is conceivable that the closure cap has only one thread, so that the cap engages with the first and / or second thread of the closure via this single thread. More than two threads of the closure are also conceivable.

[0010] In one embodiment of the voltage tester, the closure has a multi-start external thread. The closure can, for example, be cylindrical or hollow cylindrical. In this case, the multi-start external thread can be formed on an outer circumference of the closure.

[0011] In one embodiment of the voltage tester, the closure has a multi-start internal thread. If the closure is hollow cylindrical, the multi-start internal thread is located on an inner surface or circumference. The multi-start internal thread can be two-start, three-start, or more than three-start.

[0012] In one embodiment of the voltage tester, the cap has a multi-start internal thread. The cap has an inner surface or interior area on which the internal thread is formed.

[0013] In one embodiment of the voltage tester, the cap has a multi-start external thread. The cap may have a cylindrical plunger inside. The plunger may have an external thread on its outer surface or circumference.

[0014] In one embodiment of the voltage tester, the closure has at least one sealing element designed to seal the closure cap. The sealing element can, for example, be an O-ring. The sealing element can be arranged between the closure, particularly the thread of the closure, and a clip on the housing. The clip on the housing is designed to allow the voltage tester to be attached to an object, such as a trouser pocket, breast pocket, or the like. The housing has a receptacle for the sealing element. The receptacle for the sealing element can be shaped like a half-shell. The sealing element is designed to prevent liquid and / or moisture from entering the receptacle for the energy carrier. Brief description of the drawings

[0015] The invention is explained below with reference to a preferred embodiment. The drawings below show: Fig. 1 a perspective view of a voltage tester according to the invention; Fig. 2 a section of the voltage tester; Description of the exemplary embodiment

[0016] Fig. Figure 1 shows a non-contact voltage tester 100 according to the invention. The voltage tester 100 is handheld. The voltage tester 100 comprises a probe 120 for detecting electromagnetic field induction, a power supply 130, a housing 110, and a cap 140. The housing 110 includes a receptacle 114 for a replaceable energy carrier 132 of the power supply 130 and a closure 116 for receiving the cap 140. The cap 140 and the closure 116 can be screwed together with multiple threads. The housing 110 also includes the probe 120 and the power supply 130. The housing 110 is shown here as an example of an elongated and essentially cuboid shape.

[0017] The closure 116 includes a thread 118, see also Fig. 2. The closure 116 is shaped like a hollow cylinder, with the thread 118 of the closure 116 formed on an outer circumference of the closure 116. Here, the thread 118 of the closure 116 is designed as a female thread. The energy source is exemplified as an AAA battery. The housing 110 includes an output device 150 for displaying information, such as measured values ​​and / or measurement results.

[0018] Fig.Figure 2 shows a section 300 of the voltage tester 100. The end cap 140 closes the receptacle 114 of the power supply 130. Furthermore, when connected to the housing 110, the end cap 140 closes an electrical contact between the power supply 132 and the voltage tester 100 by means of a contacting element 142. The end cap 140 includes a thread 144. The thread 144 of the end cap 140 is designed to be compatible with the thread 118 of the closure 116. The end cap 140 and the closure 116 can be screwed together.

[0019] The end cap 140 is designed in a cup-like shape and can be attached to the housing 110 opposite the probe 120. The end cap 140 has a male thread. The end cap 140 and the closure 116 can be screwed together with multiple thread starts. A multi-start screw connection 160 of the end cap 140 and the closure 116 comprises at least two thread spacings 162, 164. Here, the thread spacings 162, 164 are, by way of example, identical, so that each thread has the same thread spacing 162, 164. The multi-start screw connection 160 comprises at least two thread pitches 166, 168. The thread pitches 166, 168 are, by way of example, identical, so that each thread has the same thread pitch 166, 168. The closure cap 140 comprises a first and second thread 146, 148. The threads 146, 148 of the closure cap 140 are arranged and formed on an inner circumference of the closure cap 140.The cap 140 thus comprises a multi-start internal thread formed on an inner surface. The closure 116 comprises a first and second thread 117, 119. The threads 117, 119 of the closure 116 are arranged and formed on the outer circumference of the closure 116. This gives the closure 116 a multi-start external thread.

[0020] The closure 140 includes a sealing element 170. The sealing element 170 is designed to seal the closure cap 140 in the connected state. For example, the sealing element 170 is shaped as an O-ring. The sealing element is arranged between the closure 116 and the clip 112 of the housing 110. The housing 110 includes a receptacle 111 for the sealing element 170. The receptacle 111 for the sealing element 170 is designed as a half-shell, with the housing 110 forming the receptacle 111 for the sealing element 170. The receptacle 111 for the sealing element 170 is formed circumferentially on the housing 110.

Claims

[1] Non-contact voltage tester (100) with a probe (120) for detecting electromagnetic field induction, with a power supply (130), with a housing (110) and with a cap (140), wherein the housing (110) has a receptacle (114) for a power carrier (132) of the power supply (130) and a closure (116) for receiving the cap (140), characterized by , that the cap (140) and the closure (116) can be screwed together in multiple directions. [2] Voltage tester (100) according to claim 1, characterized by , that a multi-start screw connection (160) of the closure cap (140) and the closure (116) has at least two thread spacings (162, 164). [3] Voltage tester (100) according to claim 1 or 2, characterized by , that a multi-start screw connection (160) of the closure cap (140) and the closure (116) has at least two thread pitches (166, 168). [4] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure cap (140) has a first and second thread (146, 148). [5] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure (116) has a first and second thread (117, 119). [6] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure (116) has a multi-start external thread. [7] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure (116) has a multi-start internal thread. [8] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure cap (140) has a multi-start internal thread. [9] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure cap (140) has a multi-start external thread. [10] Voltage tester (100) according to any one of the preceding claims, characterized by , that the closure (116) has at least one sealing element (170) designed to seal the closure cap (140).

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