Ampere meter convenient for wiring

Abstract

The utility model discloses an ampere meter convenient for wiring, and belongs to the technical field of ampere meters. An ammeter convenient for wiring comprises a shell, a wiring mechanism, a hole structure and a wiring electrode are arranged in the shell, the wiring mechanism comprises a wiring cylinder rotatably installed in the shell, one end of the wiring cylinder is provided with the wiring electrode, and the other end of the wiring cylinder is provided with a driving mechanism. The hole structure comprises a middle wiring hole formed in the wiring cylinder in the radial direction, and an outer wiring hole is formed in the side, close to the end face of the shell, of the middle wiring hole; the utility model has the advantages of tool-free wiring and more convenient wiring.

Description

Technical Field

[0001] The utility model relates to the technical field of ammeters, in particular to an ammeter with convenient wiring. Background Art

[0002] According to the reading method, ammeters are mainly divided into pointer ammeters and digital ammeters. Both have their own advantages. Digital ammeters are easy to read and have high accuracy. They can achieve smaller internal resistance and can be connected to DC circuits without considering polarity. They can display the current direction with positive and negative signs, which are impossible for pointer meters. However, pointer meters also have their advantages: they are cheap, not very delicate compared to digital meters, and can respond to instantaneous changes in current. Digital meters are not as sensitive as pointer meters due to sampling cycle limitations.

[0003] For the existing pointer ammeter, when in use, the terminal needs to be connected to the circuit according to the positive and negative poles, and the terminal and the wire are usually fixed with bolts, which often requires the use of tools to complete the operation. In this regard, the present application proposes an ammeter with convenient wiring. Utility Model Content

[0004] The utility model aims to solve the problem that the existing ammeter needs tools to complete the wiring when in use, and proposes an ammeter with convenient wiring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An ammeter with convenient wiring comprises a shell, wherein a wiring mechanism, a hole structure and a wiring electrode are arranged inside the shell, wherein the wiring mechanism comprises a wiring barrel rotatably mounted inside the shell, wherein a wiring electrode is arranged at one end of the wiring barrel and a driving mechanism is arranged at the other end, wherein the hole structure comprises a middle wiring hole radially opened on the wiring barrel, wherein an outer wiring hole is arranged on one side of the middle wiring hole close to the end surface of the shell.

[0007] Furthermore, the middle wiring hole passes through the wiring barrel, and an inner wiring hole is provided inside the shell at a side of the middle wiring hole away from the outer wiring hole.

[0008] Furthermore, the edges of the end surfaces of the outer wiring hole, the middle wiring hole and the inner wiring hole that are close to each other are all provided with chamfers, and the chamfers enclose an accommodation space.

[0009] Furthermore, a central groove is provided inside the wiring barrel, and the driving mechanism includes a pressing rod movably installed inside the central groove, a spiral groove is provided on the inner wall of the central groove, and a spiral column corresponding to the spiral groove is provided on the outer wall of the pressing rod;

[0010] The shell is provided with a connecting hole aligned with the central groove, the pressing rod is inserted into the connecting hole, a guide block is arranged on the inner wall of the connecting hole, and a guide groove slidingly matched with the guide block is provided on the side wall of the pressing rod.

[0011] Furthermore, a spring is arranged inside the central groove, and two ends of the spring are respectively in contact with the pressing rod and the wiring barrel.

[0012] Furthermore, a pressing plate is provided at one end of the pressing rod away from the wire barrel.

[0013] Furthermore, a latch hole is provided on the shell, a latch is movably inserted into the latch hole, and a limiting groove corresponding to the latch is provided on the outer wall of the wiring barrel.

[0014] Compared with the prior art, the utility model provides an ammeter with convenient wiring, which has the following beneficial effects:

[0015] The utility model discloses an ammeter with convenient wiring. When in use, a wire is inserted from an outer wiring hole into a middle wiring hole, and then a wiring barrel is driven to rotate by a driving mechanism, thereby driving the wire inserted into the middle wiring hole to rotate and bend, and squeezing the wire into a gap between the wiring barrel and an outer shell, thereby fixing the wire and the wiring barrel together, and conducting between the wire and the wiring electrode through the wiring barrel. Compared with the prior art, the wiring work can be completed without the aid of tools such as a wrench and a screwdriver, and the operation is convenient.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional front side schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is a three-dimensional rear side schematic diagram of the overall structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the right side of a partial cross section of the housing of the utility model;

[0021] Figure 5 It is a schematic diagram of the left side of a partial cross section of the housing of the utility model;

[0022] Figure 6 This is a schematic diagram of the wire spool groove structure of the utility model;

[0023] Figure 7 For the utility model Figure 6 A schematic diagram of the structure enlargement of part A;

[0024] Figure 8 It is a right side schematic diagram of the cross-sectional structure of the wiring barrel of the utility model;

[0025] Fig. 9 It is a schematic diagram of the left side of the cross-sectional structure of the wiring barrel of the present utility model.

[0026] In the figure:

[0027] 1. Shell; 101. Front shell; 102. Rear shell; 2. Wiring mechanism; 201. Pressing rod; 202. Latch; 203. Pressing plate; 204. Wiring barrel; 205. Spring; 206. Spiral groove; 207. Spiral column; 208. Guide groove; 209. Center groove; 210. Limiting groove; 3. Hole structure; 301. External wiring hole; 302. Middle wiring hole; 303. Internal wiring hole; 304. Latch hole; 305. Wire barrel groove; 306. Guide block; 307. Connecting hole; 4. Wiring electrode. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Reference Figure 1-9 The utility model discloses an ammeter with convenient wiring, comprising a shell 1, wherein the shell 1 is divided into a front shell 101 and a rear shell 102, the interiors of the front shell 101 and the rear shell 102 are connected, a scale and a pointer are mainly installed inside the front shell 101, and a coil, a magnet, a rotating shaft and other components are mainly installed inside the rear shell 102, a wiring mechanism 2 and a wiring electrode 4 are installed inside the rear shell 102, and a hole structure 3 is processed at the same time.

[0030] The wiring mechanism 2 includes a wiring barrel 204 rotatably installed in the housing 1. The wiring barrel 204 rotates around its own axis. One end of the wiring barrel 204 abuts against a wiring electrode 4, and the other end is provided with a driving mechanism. There are two wiring electrodes 4, which are respectively connected to the positive and negative poles of the ammeter. The wiring barrel 204 and the wiring electrode 4 are conductors, and the housing 1 is a non-conductor.

[0031] The hole structure 3 includes a central wiring hole 302 radially opened on the wiring barrel 204, and an external wiring hole 301 is processed on one side of the central wiring hole 302 close to the end surface of the shell 1. The central wiring hole 302 is connected to the outside through the external wiring hole 301, and the external wiring hole 301 and the central wiring hole 302 are on the same axis.

[0032] A wire barrel groove 305 is provided inside the housing 1 , and the wire barrel 204 is movably installed in the wire barrel groove 305 , with a gap being left between the wire barrel groove 305 and the wire barrel 204 .

[0033] The wire is passed through the outer wiring hole 301 into the middle wiring hole 302, and then the wiring barrel 204 is rotated to cause the wire to twist and bend, and the wire is squeezed into the gap between the wiring barrel 204 and the housing 1, so that the wire and the wiring barrel 204 are fixedly connected together.

[0034] The middle wiring hole 302 penetrates the wiring barrel 204 , and an inner wiring hole 303 is provided inside the housing 1 at a side of the middle wiring hole 302 away from the outer wiring hole 301 .

[0035] The outer wiring hole 301, the middle wiring hole 302, and the inner wiring hole 303 are on the same axis. When connecting the wire, the guide is inserted into the inner wiring hole 303. When the wire barrel 204 rotates, the wires in the outer wiring hole 301 and the inner wiring hole 303 are driven to rotate and bend, and are squeezed and stuck into the gap between the wire barrel 204 and the wire barrel groove 305.

[0036] After adding the inner wiring hole 303, the wire can completely pass through the middle wiring hole 302. When the wiring barrel 204 rotates, the wires at both ends of the middle wiring hole 302 rotate at the same time, which can increase the contact area between the wire and the wiring barrel 204 and increase the degree of tortuosity of the wire to prevent the wire from detaching from the wiring barrel 204.

[0037] The edges of the end surfaces of the outer wiring hole 301 , the middle wiring hole 302 , and the inner wiring hole 303 that are close to each other are all provided with chamfers, and the chamfers enclose an accommodation space.

[0038] The chamfers are rounded to prevent the edges of the outer wiring hole 301, the middle wiring hole 302, and the inner wiring hole 303 from being too sharp, which would cause a large shear force on the wires during rotation and cut the wires; and to allow the wires to have sufficient bending and deformation space so that the wires can easily enter the gap between the wiring barrel 204 and the wire barrel groove 305.

[0039] A central groove 209 is formed inside the wire barrel 204 , and the driving mechanism includes a pressing rod 201 movably mounted inside the central groove 209 . The inner diameter of the central groove 209 is the same as the outer diameter of the pressing rod 201 , and the pressing rod 201 slides along the axis in the central groove 209 .

[0040] A spiral groove 206 is processed on the inner wall of the central groove 209, and a spiral column 207 corresponding to the spiral groove 206 is welded on the outer wall of the pressing rod 201. The spiral groove 206, the spiral column 207, the pressing rod 201 and the central groove 209 are on the same axis.

[0041] A connecting hole 307 aligned with the center groove 209 is provided on the outer shell 1, and the inner diameter of the connecting hole 307 is also the same as the outer diameter of the pressing rod 201. The pressing rod 201 is inserted into the connecting hole 307, and a guide block 306 is welded on the inner wall of the connecting hole 307. A guide groove 208 slidingly matched with the guide block 306 is provided on the side wall of the pressing rod 201, and the extension direction of the guide groove 208 is parallel to the axis of the pressing rod 201.

[0042] When the pressing rod 201 is pressed downward, the pressing rod 201 moves downward along its own axis under the guidance of the guide groove 208, and drives the wire barrel 204 to rotate around its own center through the cooperation of the spiral groove 206 and the spiral column 207, thereby driving the wire to rotate and bend.

[0043] A spring 205 is installed inside the central groove 209 , and two ends of the spring 205 are movably in contact with the pressing rod 201 and the wiring barrel 204 , respectively.

[0044] When the pressing rod 201 needs to be pulled upward, the pressing rod 201 automatically pops up under the elastic effect of the spring 205 .

[0045] A pressing plate 203 is welded to one end of the pressing rod 201 away from the wire barrel 204 .

[0046] The radial dimension of the pressing plate 203 is larger than that of the pressing rod 201, so that the pressing area is increased, the pressure on the hand is reduced during pressing, and pressing is more convenient.

[0047] The housing 1 is provided with a latch hole 304, in which a latch 202 is movably inserted.

[0048] The latch 202 faces the terminal barrel 204, and a limiting groove 210 corresponding to the latch 202 is provided on the outer wall of the terminal barrel 204. When the terminal barrel 204 is rotated to a specified angle to fix the wire, the limiting groove 210 is aligned with the latch hole 304, and the end of the latch 202 is inserted into the limiting groove 210, thereby preventing the terminal barrel 204 from automatically reversing and fixing the connection between the terminal barrel 204 and the wire.

[0049] Working principle: When in use, pass the wire from the outer wiring hole 301, through the middle wiring hole 302, and into the inner wiring hole 303, then press the pressing plate 203 downward, the pressing rod 201 slides downward, driving the wiring barrel 204 to rotate, and the wiring barrel 204 drives the wire to rotate and bend through the middle wiring hole 302, squeezing the wire into the gap between the wiring barrel 204 and the wire barrel groove 305. After the wiring barrel 204 rotates to a predetermined angle, it is fixedly connected to the wire, and the pin 202 is inserted into the limit groove 210 to fix the wiring barrel 204.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An ammeter with convenient wiring, comprising a housing (1), characterized in that: The housing (1) is provided with a wiring mechanism (2), a hole structure (3), and a wiring electrode (4). The wiring mechanism (2) comprises a wiring barrel (204) rotatably mounted in the housing (1), one end of the wiring barrel (204) is provided with a wiring electrode (4), and the other end is provided with a driving mechanism. The hole structure (3) comprises a middle wiring hole (302) radially opened on the wiring barrel (204), and an outer wiring hole (301) is provided on one side of the middle wiring hole (302) close to the end surface of the housing (1).

2. An ammeter with convenient wiring according to claim 1, characterized in that: The middle wiring hole (302) passes through the wiring barrel (204), and an inner wiring hole (303) is provided inside the housing (1) on a side of the middle wiring hole (302) away from the outer wiring hole (301).

3. An ammeter with convenient wiring according to claim 2, characterized in that: The edges of the end surfaces of the outer wiring hole (301), the middle wiring hole (302) and the inner wiring hole (303) that are close to each other are all provided with chamfers, and the chamfers enclose a receiving space.

4. The conveniently connected ammeter according to claim 1, characterized in that: The wiring barrel (204) has a central groove (209) formed inside, the driving mechanism comprises a pressing rod (201) movably mounted inside the central groove (209), a spiral groove (206) is provided on the inner wall of the central groove (209), and a spiral column (207) corresponding to the spiral groove (206) is provided on the outer wall of the pressing rod (201); The housing (1) is provided with a connecting hole (307) aligned with the central groove (209); the pressing rod (201) is inserted into the connecting hole (307); a guide block (306) is provided on the inner wall of the connecting hole (307); and a guide groove (208) slidably matched with the guide block (306) is provided on the side wall of the pressing rod (201).

5. An ammeter with convenient wiring according to claim 4, characterized in that: A spring (205) is arranged inside the central groove (209), and two ends of the spring (205) are respectively in contact with the pressing rod (201) and the wiring barrel (204).

6. The conveniently connected ammeter according to claim 4, characterized in that: A pressing plate (203) is provided at one end of the pressing rod (201) away from the wiring barrel (204).

7. The conveniently connected ammeter according to claim 1, characterized in that: The housing (1) is provided with a latch hole (304), a latch (202) is movably inserted into the latch hole (304), and a limiting groove (210) corresponding to the latch (202) is provided on the outer wall of the wiring barrel (204).

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