Universal meter convenient to use

Abstract

The utility model discloses a universal meter convenient to use in the technical field of universal meters, which comprises a protective shell and a universal meter body, the universal meter body is located in an inner cavity of the protective shell, a bin door is hinged to the front side wall of the protective shell, a transmission bin is arranged on the rear side of the interior of the protective shell, and the transmission bin is connected with the universal meter body. A driving rod is rotationally connected to the rear side of the top of the protective shell, the bottom end of the driving rod penetrates through the protective shell and extends to an inner cavity of the transmission bin, driving gears are fixedly connected to the upper side and the lower side of the outer side wall of the driving rod, and gear driven screw rods are rotationally connected to the upper side and the lower side of the front side wall of the inner cavity of the transmission bin; the universal meter convenient to use is reasonable in structural design, cables with specified lengths can be taken out according to the requirements of workers, the situation that the cables are intertwined after being too long and work of the gears is affected is prevented, use is convenient, the universal meter can be stored when the universal meter is not used, and the universal meter is prevented from being affected by external factors and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of multimeters, in particular to a multimeter which is easy to use. Background Art

[0002] A multimeter is also called a multiplexer, multimeter, three-meter, complex meter, etc. It is an indispensable measuring instrument in power electronics and other departments. It is generally used to measure voltage, current and resistance. Multimeters are divided into pointer multimeters and digital multimeters according to the display mode.

[0003] When the existing multimeter is in use, the length of the cable of the multimeter is often very long, which causes the overly long cables to be entangled with each other during measurement, affecting the normal measurement work and being inconvenient to use. In addition, the existing multimeter lacks a protective mechanism, which causes the multimeter to be easily affected by external factors when not in use, causing damage to the multimeter. For this reason, we propose a multimeter that is easy to use. Utility Model Content

[0004] The purpose of the utility model is to provide a multimeter that is easy to use, so as to solve the problem raised in the above background technology that when the existing multimeter is in use, the length of the cable of the multimeter is often very long, resulting in that during measurement, the overly long cables will be entangled with each other, affecting the normal measurement work and being inconvenient to use; the multimeter lacks a protective mechanism, resulting in the multimeter being easily affected by external factors when not in use, causing damage to the multimeter.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multimeter that is easy to use, comprising a protective shell and a multimeter body, the multimeter body being located in the inner cavity of the protective shell, a compartment door being hingedly connected to the front side wall of the protective shell, a transmission compartment being opened on the inner rear side of the protective shell, a driving rod being rotatably connected to the top rear side of the protective shell, the bottom end of the driving rod passing through the protective shell and extending to the inner cavity of the transmission compartment, and driving gears are fixedly connected to the upper and lower sides of the outer side walls of the driving rod, gear driven screws are rotatably connected to the upper and lower sides of the front side walls of the inner cavity of the transmission compartment, the front ends of the gear driven screws on the upper and lower sides pass through the transmission compartment and extend to the inner cavity of the protective shell, and threaded sleeves are screwed to the outer side walls of the gear driven screws on the upper and lower sides.

[0006] As a further description of the above technical solution:

[0007] The front ends of the threaded sleeves on the upper and lower sides are fixedly connected to the multimeter body.

[0008] As a further description of the above technical solution:

[0009] A rotating rod is rotatably connected between the left and right side walls of the inner cavity of the multimeter body, and two ends of the rotating rod penetrate the multimeter body and extend to the left and right side walls of the multimeter body.

[0010] As a further description of the above technical solution:

[0011] Winding rollers are fixedly connected to the left and right sides of the outer side walls of the rotating rod, and cables are wound around the outer side walls of the winding rollers on the left and right sides.

[0012] As a further description of the above technical solution:

[0013] The top ends of the cables on the left and right sides are fixedly connected to the multimeter body, and the bottom ends of the cables on the left and right sides are fixedly connected with connecting pieces.

[0014] As a further description of the above technical solution:

[0015] The bottom of the multimeter body is slidably connected with a sealing plate.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The easy-to-use multimeter, when performing measurement work, is disassembled by removing the sealing plate, and then according to the needs of the staff, the rotating rod is rotated to drive the winding roller to rotate, so that the cable on the winding roller follows the rotation of the winding roller and is separated from the winding roller and extends out of the inner cavity of the multimeter body, and then the electric pen is connected to the connector on the cable, and then the device is measured, so that the cable of the specified length can be taken out according to the needs of the staff, so as to prevent the cables from being entangled with each other after being too long and affecting the work of the gears, and it is easy to use.

[0018] 2. After the measurement is completed, the electric pen is disassembled, and then the rotating rod is rotated in the opposite direction to prevent the winding roller from collecting the cable, and then the sealing plate is installed on the multimeter body, and then the driving rod is rotated to drive the driving gears on both sides to drive the gear driven screws on both sides meshing with them to rotate, so that the threaded sleeves installed on the gear driven screws on both sides are contracted following the rotation of the gear driven screws on both sides, so that the multimeter body connected with the threaded sleeves on both sides is moved to the inner cavity of the protective shell, and then the compartment door is closed to complete the storage of the multimeter body, so that the multimeter can be stored when not in use to prevent the multimeter from being damaged by external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural schematic diagram of a multimeter that is easy to use proposed by the utility model;

[0020] Figure 2This is a front view cross-sectional structural schematic diagram of a multimeter that is easy to use and is proposed by the utility model;

[0021] Figure 3 A right side cross-sectional structural schematic diagram of a multimeter that is easy to use according to the utility model;

[0022] Figure 4 A multimeter that is easy to use is provided by the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0023] In the figure: 100, protective shell; 110, compartment door; 120, transmission compartment; 130, driving rod; 131, driving gear; 140, gear driven screw; 141, threaded sleeve; 200, multimeter body; 210, rotating rod; 220, winding roller; 230, cable; 231, connecting piece; 240, sealing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a convenient multimeter, which can take out cables of a specified length according to the needs of the staff, to prevent the cables from being entangled with each other after being too long, affecting the operation of the gears, and is easy to use. When the multimeter is not in use, the multimeter can be stored to prevent the multimeter from being damaged by external factors. Please refer to Figure 1-4 , comprising a protective shell 100 and a multimeter body 200;

[0028] Please refer again Figure 1-4 The protective shell 100 is used to protect the multimeter body 200. The front side wall of the protective shell 100 is hinged with a compartment door 110. The rear side of the interior of the protective shell 100 is provided with a transmission compartment 120. The top rear side of the protective shell 100 is rotatably connected with a driving rod 130. The driving rod 130 is used to install a driving gear 131. The bottom end of the driving rod 130 penetrates the protective shell 100 and extends to the inner cavity of the transmission compartment 120. The upper and lower sides of the outer wall of the driving rod 130 are fixedly connected with driving gears 131. The driving gear 131 is used to drive the gear driven screw 140 to rotate. The upper and lower sides of the front side wall of the inner cavity of the transmission compartment 120 are rotatably connected with the gear driven screw 140. The gear driven screw 140 is used to install a threaded sleeve 141. The front ends of the gear driven screws 140 on the upper and lower sides penetrate the transmission compartment 120 and extend to the inner cavity of the protective shell 100. The outer wall of the screw rod 140 is screwed with a threaded sleeve 141, and the threaded sleeve 141 is used to install the multimeter body 200. The front ends of the threaded sleeves 141 on the upper and lower sides are fixedly connected to the multimeter body 200. After the measurement is completed, the electric pen is disassembled, and then the rotating rod 210 is rotated in the opposite direction to prevent the winding roller 220 from collecting the cable 230. Then the sealing plate 240 is installed on the multimeter body 200, and then the driving rod 130 is rotated to drive the driving gears 131 on both sides to drive the gear driven screws 140 on both sides meshing with it to rotate, so that the threaded sleeves 141 installed on the gear driven screws 140 on both sides follow the rotation of the gear driven screws 140 on both sides to shrink, so that the multimeter body 200 connected to the threaded sleeves 141 on both sides moves to the inner cavity of the protective shell 100, and then the compartment door 110 is closed to complete the storage of the multimeter body 200;

[0029] To sum up, when the multimeter is not in use, it can be stored to prevent it from being damaged by external factors;

[0030] Please refer again Figure 1-3 The multimeter body 200 is located in the inner cavity of the protective shell 100. Specifically, the multimeter body 200 is fixedly connected to the inner cavity of the protective shell 100 through the threaded sleeves 141 on the upper and lower sides. A rotating rod 210 is rotatably connected between the left and right side walls of the inner cavity of the multimeter body 200. The rotating rod 210 is used to install a winding roller 220. Both ends of the rotating rod 210 penetrate the multimeter body 200 and extend to the left and right side walls of the multimeter body 200. The outer side walls of the rotating rod 210 are fixedly connected with winding rollers 220 on the left and right sides. The winding rollers 220 are used to wind the cables 230. The outer side walls of the winding rollers 220 on the left and right sides are wound with cables 230. The tops of the cables 230 on the left and right sides are fixedly connected to the outer side walls of the rotating rod 210. The multimeter body 200 is fixedly connected to the bottom ends of the cables 230 on the left and right sides, and the connectors 231 are fixedly connected to the electric pen. The bottom of the multimeter body 200 is slidably connected to the sealing plate 240. When measuring, the sealing plate 240 is disassembled, and then the rotating rod 210 is rotated according to the needs of the staff to drive the winding roller 220 to rotate, so that the cable 230 on the winding roller 220 follows the rotation of the winding roller 220 and is separated from the winding roller 220 and extends out of the inner cavity of the multimeter body 200. Then, the electric pen is connected to the connector 231 on the cable 230, and then the device is measured;

[0031] In summary, the cables 230 of a specified length can be taken out according to the needs of the staff, so as to prevent the cables 230 from being entangled with each other after being too long, thus affecting the operation of the gears and facilitating use;

[0032] In specific use, when performing measurement work, the technical personnel in this field disassemble the sealing plate 240, and then rotate the rotating rod 210 according to the needs of the staff to make the rotating rod 210 drive the winding roller 220 to rotate, so that the cable 230 on the winding roller 220 follows the rotation of the winding roller 220 and is separated from the winding roller 220 and extends out of the inner cavity of the multimeter body 200, and then the electric pen is connected to the connecting piece 231 on the cable 230, and then the device is measured. After the measurement is completed, the electric pen is disassembled, and then the rotating rod 210 is rotated in the opposite direction. The winding roller 220 prevents the cable 230 from being collected, and then the sealing plate 240 is installed on the multimeter body 200. Then, the driving rod 130 is rotated to drive the driving gears 131 on both sides to drive the gear driven screws 140 on both sides meshing with them to rotate, so that the threaded sleeves 141 installed on the gear driven screws 140 on both sides shrink along with the rotation of the gear driven screws 140 on both sides, so that the multimeter body 200 connected to the threaded sleeves 141 on both sides moves to the inner cavity of the protective shell 100, and then the compartment door 110 is closed to complete the storage of the multimeter body 200.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multimeter that is easy to use, characterized in that: The multimeter comprises a protective shell (100) and a multimeter body (200), wherein the multimeter body (200) is located in the inner cavity of the protective shell (100), a door (110) is hingedly connected to the front side wall of the protective shell (100), a transmission chamber (120) is opened on the inner rear side of the protective shell (100), a driving rod (130) is rotatably connected to the rear side of the top of the protective shell (100), and the bottom end of the driving rod (130) passes through the protective shell (100) and extends to the transmission chamber. The inner cavity of the protective shell (100) is provided with a drive gear (131) fixedly connected to the upper and lower outer walls of the drive rod (130); the upper and lower front walls of the inner cavity of the transmission chamber (120) are rotatably connected to the gear driven screw (140); the front ends of the gear driven screw (140) on the upper and lower sides pass through the transmission chamber (120) and extend to the inner cavity of the protective shell (100); and the outer walls of the gear driven screw (140) on the upper and lower sides are threadedly connected to the threaded sleeve (141).

2. A convenient multimeter according to claim 1, characterized in that: The front ends of the threaded sleeves (141) on the upper and lower sides are fixedly connected to the multimeter body (200).

3. A convenient multimeter according to claim 1, characterized in that: A rotating rod (210) is rotatably connected between the left and right side walls of the inner cavity of the multimeter body (200), and both ends of the rotating rod (210) penetrate the multimeter body (200) and extend to the left and right side walls of the multimeter body (200).

4. A convenient multimeter according to claim 3, characterized in that: Winding rollers (220) are fixedly connected to the left and right sides of the outer side walls of the rotating rod (210), and cables (230) are wound around the outer side walls of the winding rollers (220) on the left and right sides.

5. A convenient multimeter according to claim 4, characterized in that: The top ends of the cables (230) on the left and right sides are fixedly connected to the multimeter body (200), and the bottom ends of the cables (230) on the left and right sides are fixedly connected to connecting pieces (231).

6. A convenient multimeter according to claim 1, characterized in that: A sealing plate (240) is slidably connected to the bottom of the multimeter body (200).

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