Electric energy meter tester

Abstract

The invention relates to the technical field of electric energy meter testing, and discloses an electric energy meter tester, which comprises a box body, a top cover, a test instrument, a rotating rod, a display screen, a hinge assembly and a connecting piece, an accommodating space is arranged in the box body; the top cover is hinged to one side of the top of the box body in the first direction; the test instrument is arranged in the accommodating space, the top of the test instrument is provided with a sliding groove and a mounting groove which are sequentially arranged along a second direction, and one side, close to the mounting groove, of the sliding groove is provided with a first connecting hole penetrating to the mounting groove; the rotating rod and the display screen are located in the mounting groove, the first end, close to the top cover hinge shaft, of the rotating rod is hinged in the mounting groove, and a sliding hole is formed in the rotating rod; a fixing block is arranged on one side of the display screen close to the rotating rod; the first end of the hinge assembly is hinged to the bottom of the top cover. The first end of the connecting piece is connected with the second end of the hinge assembly. According to the electric energy meter tester, the inclination angle of the display screen can be adjusted while the top cover is opened, and a worker can check conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of electricity meter testing, and particularly to an electricity meter tester. Background Art

[0002] At present, most electricity meter testers are devices that integrate testing instruments in a box. The testing instruments display the test results on a display screen for the staff to view. However, the display screen is horizontally arranged on the testing instrument. After opening the top cover of the electricity meter tester, the staff needs to look down at the display screen to clearly see the displayed content, which is inconvenient to use. Summary of the Invention

[0003] The purpose of the present invention is to provide an electricity meter tester that can adjust the tilt angle of the display screen while opening the top cover, facilitating the staff to view.

[0004] To achieve the above purpose, the present invention provides an electricity meter tester, including:

[0005] A box body, in which a receiving space is provided;

[0006] A top cover, which is hinged to one side of the top of the box body in a first direction;

[0007] Testing instruments, which are arranged in the receiving space. A sliding groove and a mounting groove are sequentially arranged at the top of the testing instruments along a second direction. The sliding groove extends along the first direction. A first connection hole penetrating through to the mounting groove is provided on one side of the sliding groove close to the mounting groove, and the first connection hole extends along the first direction;

[0008] A rotating rod, which is located in the mounting groove. The first end of the rotating rod close to the hinge axis of the top cover is hinged in the mounting groove. A sliding hole is provided on the rotating rod, and the sliding hole extends along the length direction of the rotating rod;

[0009] A display screen, which is located in the mounting groove. The display screen is located on the side of the rotating rod away from the sliding groove in the second direction. The first end of the display screen away from the hinge axis of the rotating rod is hinged in the mounting groove. A fixing block is provided on one side of the display screen close to the rotating rod. The fixing block is embedded in the sliding hole and can slide along the sliding hole;

[0010] A hinge assembly, the first end of which is hinged to the bottom of the top cover;

[0011] A connecting member, the first end of the connecting member is located in the sliding groove, the first end of the connecting member is connected to the second end of the hinge assembly, the connecting member extends along the second direction, the second end of the connecting member passes through the first connection hole and enters the installation groove, and the second end of the connecting member is used to drive the rotating rod to rotate around the rotating rod hinge axis;

[0012] Wherein, the first direction and the second direction are perpendicular to each other.

[0013] Preferably, on both sides of the installation groove along the second direction at the top of the test instrument, the sliding grooves are respectively provided, and each sliding groove is provided with the hinge assembly and the connecting member;

[0014] There are two rotating rods, the two rotating rods are respectively located on both sides of the display screen in the second direction, and fixed blocks are provided on both sides of the display screen close to the two rotating rods, and the fixed blocks are embedded in the corresponding sliding holes and can slide along the corresponding sliding holes.

[0015] Preferably, a jacking block is connected to the second end of the connecting member, the jacking block is located in the installation groove, the jacking block is located on the side of the rotating rod hinge axis away from the top cover hinge axis in the first direction, and a first inclined surface is provided on the side of the jacking block close to the hinge axis of the rotating rod.

[0016] Preferably, the hinge assembly includes:

[0017] A hinge rod, the first end of the hinge rod is hinged to the bottom of the top cover;

[0018] A sliding tube, a first limiting portion is provided at the first end of the sliding tube, the first limiting portion is circumferentially arranged along the inner wall of the sliding tube close to the tube orifice, a limiting opening is defined between the first limiting portions, and the second end of the sliding tube is connected to the first end of the connecting member;

[0019] A telescopic rod, the telescopic rod is located in the sliding tube, the telescopic rod includes a telescopic portion and a connecting portion, the diameter of the connecting portion is smaller than the diameter of the telescopic portion, the diameter of the telescopic portion is the same as the inner diameter of the sliding tube, the first end of the connecting portion passes through the limiting opening and is connected to the second end of the hinge rod, the second end of the connecting portion is connected to the first end of the telescopic portion, and second inclined surfaces are provided on both sides of the second end of the telescopic portion in the second manner;

[0020] A first limiting spring, the first limiting spring is sleeved on the outside of the connecting portion, the first end of the first limiting spring abuts against the first limiting portion, and the second end of the first limiting spring abuts against the first end of the telescopic portion;

[0021] Two telescopic blocks, the telescopic blocks are located inside the sliding tube, the two telescopic blocks are respectively arranged outside the two second inclined surfaces, the telescopic blocks pass through the tube wall of the sliding tube, and a second limiting portion is circumferentially arranged at one end of the two telescopic blocks close to each other. The second inclined surface is used to push the telescopic block out of the outer wall of the sliding tube;

[0022] A pair of fixing members, the pair of fixing members are fixed in the sliding groove, the pair of fixing members are respectively arranged on both sides of the sliding tube in the second direction, and a fixing hole is formed in the fixing member. The fixing hole is used to correspond to the telescopic block when the sliding tube slides between the two fixing members;

[0023] A second limiting spring, the second limiting spring is located inside the sliding tube, and both ends of the second limiting spring are respectively connected to one end of the two telescopic blocks close to each other. When the second limiting spring is in a natural state, the two telescopic blocks do not protrude from the outer wall of the sliding tube.

[0024] Preferably, there are multiple pairs of the fixing members, and the multiple pairs of fixing members are sequentially fixed in the sliding groove along the first direction.

[0025] Preferably, a limiting groove is formed on one side of the side wall of the telescopic portion in the second direction, and a hook plate is arranged on the side wall of the limiting groove far from the first end of the telescopic portion;

[0026] The hinge assembly further includes:

[0027] A limiting member, the limiting member is located in the limiting groove. The limiting member includes a pressing rod, a guiding rod and a guiding spring. The diameter of the pressing rod is larger than that of the guiding rod. The first end of the pressing rod passes through the tube wall of the sliding tube on the side close to the sliding groove, the second end of the pressing rod is connected to the first end of the guiding rod, the second end of the guiding rod passes through the tube wall of the sliding tube on the side far from the sliding groove, and third limiting portions are circumferentially arranged at the first end of the pressing rod and the second end of the guiding rod. The sum of the lengths of the pressing rod and the guiding rod is greater than the outer diameter of the sliding tube. The guiding spring is sleeved outside the guiding rod, the first end of the guiding spring abuts against the second end of the pressing rod, the second end of the guiding spring abuts against the inner wall of the sliding tube, and a hook groove is formed on the side wall of the pressing rod far from the first end of the telescopic portion. The hook groove corresponds to the position of the hook plate.

[0028] Preferably, a wire placement groove is formed at the top of the test instrument.

[0029] Preferably, the wire placement groove is formed on one side of the sliding groove in the first direction away from the top cover hinge shaft;

[0030] A second connection hole is formed on one side of the sliding groove close to the wire placement groove, and the second connection hole penetrates through to the wire placement groove;

[0031] The electric energy meter tester further includes:

[0032] A wire pressing plate located within the wire placement groove;

[0033] A baffle plate, with one side edge of the baffle plate connected to the side surface of the wire pressing plate away from the sliding groove;

[0034] A wire pressing rod located within the sliding groove, the wire pressing rod extending along a first direction, a first end of the wire pressing rod being close to a second end of the hinge assembly, a fourth limiting portion being circumferentially provided at the first end of the wire pressing rod, and a second end of the wire pressing rod passing through the second connection hole to connect to the wire pressing plate;

[0035] A wire pressing spring sleeved outside the wire pressing rod, a first end of the wire pressing spring abutting against the fourth limiting portion, and a second end of the wire pressing spring abutting against the side wall of the sliding groove.

[0036] Preferably, a track is provided on the bottom wall of the wire placement groove, the track extending along the first direction, and the wire pressing plate is installed on the track and can slide along the track.

[0037] Preferably, a side wall of the wire placement groove away from the sliding groove is a wire pressing wall;

[0038] The electric energy meter tester further includes:

[0039] A flexible member, a first end of the flexible member connecting to the wire pressing plate, and the flexible member being arranged along the bottom wall and the wire pressing wall of the wire placement groove;

[0040] A stop rod extending along a second direction, one end of the stop rod being installed on a side wall of the wire placement groove in the second direction, the stop rod being arranged close to a connection position of the bottom wall and the wire pressing wall of the wire placement groove, and the stop rod being used to limit the flexible member between the stop rod and the wall surface of the wire placement groove;

[0041] An arc-shaped plate installed on the top of the testing instrument, a first end of the arc-shaped plate being installed at a position close to the wire pressing wall in the first direction, and a second end of the arc-shaped plate facing the wire pressing plate.

[0042] Compared with the prior art, the beneficial effects of an electric energy meter tester according to an embodiment of the present invention are as follows:

[0043] The initial state is when the top cover of the electricity meter tester is not opened. In the initial state, the hinge assembly is located within the sliding groove, the rotating rod is located within the mounting groove, the display screen is located within the mounting groove, the first end of the connecting member is at the position farthest from the hinge axis of the top cover within the sliding groove, and the fixing block on one side of the display screen is at the position closest to the hinge axis of the rotating rod within the slider hole.

[0044] When opening the top cover of the electricity meter tester, the top cover drives the hinge assembly to move forward in the first direction. The first end of the hinge assembly is taken out of the sliding groove, the second end of the hinge assembly moves forward in the first direction within the sliding groove, the second end of the hinge assembly drives the first end of the connecting member to move forward in the first direction, the second end of the connecting member moves forward in the first direction within the mounting groove, the second end of the connecting member drives the rotating rod to rotate about the hinge axis of the rotating rod, the second end of the rotating rod gradually moves away from the mounting groove, and a frictional force is generated between the sliding hole and the fixing block. This frictional force pushes the fixing block to slide along the sliding hole in a direction away from the hinge axis of the rotating rod, so that the display screen rotates about the hinge axis of the display screen, and the second end of the display screen gradually moves away from the mounting groove, and the display screen is tilted. After closing the top cover of the electricity meter tester, all components return to the initial state.

[0045] By adjusting the opening degree of the top cover, the moving distance of the hinge assembly, the moving distance of the connecting member, the rotation angle of the rotating rod about its hinge axis, and the sliding distance of the fixing block along the sliding hole can be adjusted in sequence, so as to change the rotation angle of the display screen about its hinge axis and adjust the tilt angle of the display screen, which is convenient for the staff to view. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a schematic structural diagram of the electricity meter tester according to the embodiment of the present invention when the top cover is opened;

[0047] Figure 2 is a top view of the electricity meter tester according to the embodiment of the present invention when the top cover is opened;

[0048] Figure 3 is a schematic structural diagram of the display screen, fixing block, rotating rod and lifting block according to the embodiment of the present invention;

[0049] Figure 4 is a cross-sectional view of the hinge assembly according to the embodiment of the present invention;

[0050] Figure 5 is a cross-sectional view of the test instrument, wire pressing rod and wire pressing plate according to the embodiment of the present invention;

[0051] Figure 6 is a cross-sectional view of the hinge assembly, connecting member, lifting block and rotating rod according to the embodiment of the present invention;

[0052] Figure 7It is a schematic structural diagram of the hinge assembly, connecting piece, jacking block and rotating rod described in the embodiments of the present invention;

[0053] In the figure, 1 is the box body; 2 is the top cover; 3 is the test instrument; 31 is the sliding groove; 32 is the installation groove; 33 is the first connection hole; 34 is the wire placement groove; 341 is the wire pressing wall; 35 is the button panel; 4 is the rotating rod; 41 is the sliding hole; 5 is the display screen; 51 is the fixing block; 6 is the hinge assembly; 61 is the hinge rod; 62 is the sliding tube; 621 is the first limiting part; 622 is the limiting port; 63 is the telescopic rod; 631 is the connecting part; 632 is the telescopic part; 6321 is the limiting groove; 6322 is the hook plate; 6323 is the second inclined surface; 64 is the first limiting spring; 65 is the telescopic block; 651 is the second limiting part; 66 is the fixing piece; 661 is the fixing hole; 67 is the second limiting spring; 7 is the connecting piece; 8 is the jacking block; 81 is the first inclined surface; 9 is the limiting piece; 91 is the pressing rod; 911 is the hook groove; 92 is the guiding rod; 93 is the guiding spring; 94 is the third limiting part; 10 is the wire pressing plate; 11 is the baffle; 12 is the wire pressing rod; 121 is the fourth limiting part; 13 is the wire pressing spring; 14 is the track; 15 is the flexible piece; 16 is the blocking rod; 17 is the arc plate. Detailed implementation manners

[0054] The following combines the drawings and embodiments to further describe the detailed implementation manners of the present invention in detail. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0055] In the description of the present invention, it should be understood 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0056] In the description of the present invention, it should be understood that the terms "first", "second", and "third" used in the present invention are only for descriptive purposes and cannot be construed as indicating or implying relative importance. Additionally, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0057] As Figures 1-4 shown, a power meter tester according to an embodiment of the present invention includes: a box body 1, a top cover 2, a test instrument 3, a rotating rod 4, a display screen 5, a hinge assembly 6, and a connecting member 7;

[0058] The box body 1 is provided with an accommodating space;

[0059] The top cover 2 is hinged to one side of the top of the box body 1 in the first direction X;

[0060] The test instrument 3 is arranged in the accommodating space. A sliding groove 31 and a mounting groove 32 are sequentially arranged at the top of the test instrument 3 along the second direction Y. The sliding groove 31 extends along the first direction X. A first connection hole 33 penetrating through to the mounting groove 32 is provided on one side of the sliding groove 31 close to the mounting groove 32, and the first connection hole 33 extends along the first direction X;

[0061] The rotating rod 4 is located in the mounting groove 32. The first end of the rotating rod 4 close to the hinge shaft of the top cover 2 is hinged in the mounting groove 32. A sliding hole 41 is provided on the rotating rod 4, and the sliding hole 41 extends along the length direction of the rotating rod 4;

[0062] The display screen 5 is located in the mounting groove 32. The display screen 5 is located on the side of the rotating rod 4 away from the sliding groove 31 in the second direction Y. The first end of the display screen 5 away from the hinge shaft of the rotating rod 4 is hinged in the mounting groove 32. A fixing block 51 is provided on the side of the display screen 5 close to the rotating rod 4. The fixing block 51 is embedded in the sliding hole 41 and can slide along the sliding hole 41;

[0063] The first end of the hinge assembly 6 is hinged to the bottom of the top cover 2;

[0064] The first end of the connecting member 7 is located within the sliding groove 31. The first end of the connecting member 7 is connected to the second end of the hinge assembly 6. The connecting member 7 extends along the second direction Y. The second end of the connecting member 7 passes through the first connection hole 33 and enters the installation groove 32. The second end of the connecting member 7 is used to drive the rotating rod 4 to rotate about the hinge axis of the rotating rod 4.

[0065] Wherein, the first direction X and the second direction Y are perpendicular to each other.

[0066] It should be noted that the initial state is when the top cover 2 of the electricity meter tester is not opened. In the initial state, the hinge assembly 6 is located within the sliding groove 31, the rotating rod 4 is located within the installation groove 32, the display screen 5 is located within the installation groove 32, the first end of the connecting member 7 is at the position farthest from the hinge axis of the top cover 2 within the sliding groove 31, and the fixing block 51 on one side of the display screen 5 is at the position closest to the hinge axis of the rotating rod 4 within the slider hole.

[0067] When the top cover 2 of the electricity meter tester is opened, the top cover 2 drives the hinge assembly 6 to move forward along the first direction X. The first end of the hinge assembly 6 is taken out of the sliding groove 31. The second end of the hinge assembly 6 moves forward along the first direction X within the sliding groove 31. The second end of the hinge assembly 6 drives the first end of the connecting member 7 to move forward along the first direction X. The second end of the connecting member 7 moves forward along the first direction X within the installation groove 32. The second end of the connecting member 7 drives the rotating rod 4 to rotate about the hinge axis of the rotating rod 4. The second end of the rotating rod 4 gradually moves away from the installation groove 32. A frictional force is generated between the sliding hole 41 and the fixing block 51. This frictional force pushes the fixing block 51 to slide along the sliding hole 41 in a direction away from the hinge axis of the rotating rod 4. Thus, the display screen 5 rotates about the hinge axis of the display screen 5, and the second end of the display screen 5 gradually moves away from the installation groove 32, and the display screen 5 is tilted. After the top cover 2 of the electricity meter tester is closed, all components return to the initial state.

[0068] By adjusting the opening degree of the top cover 2, the moving distance of the hinge assembly 6, the moving distance of the connecting member 7, the rotation angle of the rotating rod 4 about its hinge axis, and the sliding distance of the fixing block 51 along the sliding hole 41 can be adjusted in sequence. Thus, the rotation angle of the display screen 5 about its hinge axis is changed, and the tilt angle of the display screen 5 is adjusted, which is convenient for the staff to view.

[0069] In a more specific embodiment, a key panel 35 is further installed on the top of the testing instrument 3.

[0070] As Figures 1-2 shown, in a more specific embodiment, sliding grooves 31 are respectively formed on both sides of the installation groove 32 along the second direction Y on the top of the testing instrument 3. An articulated assembly 6 and a connecting member 7 are provided in each sliding groove 31.

[0071] There are two rotating rods 4, and the two rotating rods 4 are respectively located on both sides of the display screen 5 in the second direction Y. Fixing blocks 51 are provided on both sides of the display screen 5 close to the two rotating rods 4, and the fixing blocks 51 are embedded in the corresponding sliding holes 41 and can slide along the corresponding sliding holes 41.

[0072] It should be noted that sliding grooves 31 are respectively formed on both sides of the installation groove 32 along the second direction Y at the top of the testing instrument 3. When the top cover 2 of the electric energy meter tester is opened, the top cover 2 can drive the two hinge assemblies 6 to move forward simultaneously along the first direction X. The hinge assembly 6 drives the corresponding connecting member 7 to move, and the connecting member 7 drives the corresponding rotating rod 4 to rotate around the rotating rod 4 hinge axis. The fixing blocks 51 on both sides of the display screen 5 slide simultaneously, and both sides of the display screen 5 are lifted simultaneously, improving the stability of the rotation and inclination of the display screen 5.

[0073] Such as Figure 3 、 6 As shown in -7, in a more specific embodiment, a jacking block 8 is connected to the second end of the connecting member 7. The jacking block 8 is located in the installation groove 32. The jacking block 8 is located on the side of the rotating rod 4 hinge axis away from the top cover 2 hinge axis in the first direction X. A first inclined surface 81 is provided on the side of the jacking block 8 close to the hinge axis of the rotating rod 4.

[0074] It should be noted that when the top cover 2 is opened, when the second end of the connecting member 7 moves forward along the first direction X in the installation groove 32, it drives the jacking block 8 to move forward along the first direction X. After the jacking block 8 contacts the second end of the rotating rod 4, the second end of the rotating rod 4 slides onto the first inclined surface 81. The jacking block 8 continues to move, lifting the second end of the rotating rod 4 gradually away from the installation groove 32, and the rotating rod 4 rotates around the hinge axis at the first end.

[0075] Such as Figure 1 、 4 As shown in 6-7, in a more specific embodiment, the hinge assembly 6 includes: a hinge rod 61, a sliding tube 62, a telescopic rod 63, a first limiting spring 64, a second limiting spring 67, two telescopic blocks 65, and a pair of fixing holes 661;

[0076] The first end of the hinge rod 61 is hinged to the bottom of the top cover 2;

[0077] The first end of the sliding tube 62 is provided with a first limiting portion 621. The first limiting portion 621 is circumferentially arranged along the inner wall of the sliding tube 62 close to the tube orifice. A limiting opening 622 is defined between the first limiting portions 621. The second end of the sliding tube 62 is connected to the first end of the connecting member 7;

[0078] The telescopic rod 63 is located within the sliding tube 62. The telescopic rod 63 includes a telescopic portion 632 and a connecting portion 631. The diameter of the connecting portion 631 is smaller than that of the telescopic portion 632. The diameter of the telescopic portion 632 is the same as the inner diameter of the sliding tube 62. The first end of the connecting portion 631 passes through the limiting opening 622 to connect the second end of the hinge rod 61. The second end of the connecting portion 631 is connected to the first end of the telescopic portion 632. Second inclined surfaces 6323 are provided on both sides of the second end of the telescopic portion 632 in the second mode;

[0079] The first limiting spring 64 is sleeved outside the connecting portion 631. The first end of the first limiting spring 64 abuts against the first limiting portion 621, and the second end of the first limiting spring 64 abuts against the first end of the telescopic portion 632;

[0080] The telescopic blocks 65 are located within the sliding tube 62. The two telescopic blocks 65 are respectively arranged outside the two second inclined surfaces 6323. The telescopic blocks 65 pass through the tube wall of the sliding tube 62. Second limiting portions 651 are circumferentially arranged at the ends of the two telescopic blocks 65 that are close to each other. The second inclined surfaces 6323 are used to push the telescopic blocks 65 out of the outer wall of the sliding tube 62;

[0081] A pair of fixing members 66 are fixed within the sliding groove 31. The pair of fixing members 66 are respectively arranged on both sides of the sliding tube 62 in the second direction Y. Fixing holes 661 are formed in the fixing members 66. The fixing holes 661 are used to correspond to the telescopic blocks 65 when the sliding tube 62 slides between the two fixing members 66;

[0082] The second limiting spring 67 is located within the sliding tube 62. The two ends of the second limiting spring 67 are respectively connected to the ends of the two telescopic blocks 65 that are close to each other. When the second limiting spring 67 is in a natural state, the two telescopic blocks 65 do not protrude from the outer wall of the sliding tube 62.

[0083] It should be noted that when the top cover 2 is opened, the top cover 2 drives the hinge rod 61 to move forward along the first direction X. The hinge rod 61 drives the sliding tube 62 to move. In the initial state, the second inclined surface 6323 at the second end of the telescopic part 632 passes the telescopic blocks 65 on both sides of the sliding block tube through the outer wall of the sliding tube 62. At this time, the second limiting spring 67 connecting the two telescopic blocks 65 is stretched. When the telescopic blocks 65 on both sides of the sliding tube 62 hit a pair of fixing parts 66 fixed in the sliding groove 31, the sliding tube 62 suddenly stops moving. However, since the hinge rod 61 continues to move, the hinge rod 61 drives the telescopic rod 63 to move, the first limiting spring 64 is compressed, and the telescopic part 632 gradually disengages from the telescopic block 65. The second limiting spring 67 between the two telescopic blocks 65 returns to the natural state and pulls the two telescopic blocks 65 back into the sliding tube 62. Thus, the sliding tube 62 can continue to move forward, and the telescopic block 65 abuts against the inner side wall of the fixing part 66. When the telescopic block 65 contacts the fixing hole 661 of the fixing part 66, the first limiting spring 64 resets, and the second inclined surface 6323 of the telescopic part 632 pushes the telescopic block 65 outward into the fixing hole 661. At this time, no force is applied to the top cover 2, and the position of the sliding tube 62 can be fixed, the position of the hinge rod 61 can be fixed, and thus the position of the top cover 2 can be fixed, avoiding the accidental movement of the sliding tube 62 in the open state of the top cover 2 and causing the accidental closing of the top cover 2.

[0084] As Figure 1 , 6 -7 shows, in a more specific embodiment, there are multiple pairs of fixing parts 66, and the multiple pairs of fixing parts 66 are sequentially fixed in the sliding groove 31 along the first direction X.

[0085] It should be noted that there are multiple pairs of fixing parts 66, and the multiple pairs of fixing parts 66 are sequentially fixed in the sliding groove 31 along the first direction X. After the telescopic block 65 is stuck in the fixing hole 661 of the first fixing part 66, if force is continuously applied to the top cover 2, the hinge rod 61 continues to move, the hinge rod 61 drives the telescopic rod 63 to move, the first limiting spring 64 is compressed, the telescopic part 632 gradually disengages from the telescopic block 65, and the second limiting spring 67 between the two telescopic blocks 65 resets and pulls the two telescopic blocks 65 back into the sliding tube 62. Thus, the sliding tube 62 can continue to move forward to the next pair of fixing parts 66.

[0086] By applying force to the top cover 2 and adjusting the timing of applying force, the staff can make the telescopic blocks 65 on both sides of the sliding tube 62 be stuck in the fixing holes 661 of different fixing parts 66 in the first direction X, thereby adjusting the opening degree of the top cover 2.

[0087] As Figure 4 shown, in a more specific embodiment, a limiting groove 6321 is formed on one side of the side wall of the telescopic part 632 in the second direction Y, and a hook plate 6322 is provided on the side wall of the limiting groove 6321 far from the first end of the telescopic part 632;

[0088] The hinged assembly 6 further includes a limiting member 9;

[0089] The limiting member 9 is located in the limiting groove 6321. The limiting member 9 includes a pressure rod 91, a guide rod 92 and a guide spring 93. The diameter of the pressure rod 91 is greater than that of the guide rod 92. The first end of the pressure rod 91 passes through the pipe wall of the sliding tube 62 on the side close to the sliding groove 31. The second end of the pressure rod 91 is connected to the first end of the guide rod 92. The second end of the guide rod 92 passes through the pipe wall of the sliding tube 62 on the side away from the sliding groove 31. Third limiting portions 94 are circumferentially arranged at both the first end of the pressure rod 91 and the second end of the guide rod 92. The total length of the pressure rod 91 and the guide rod 92 is greater than the outer diameter of the sliding tube 62. The guide spring 93 is sleeved outside the guide rod 92. The first end of the guide spring 93 abuts against the second end of the pressure rod 91, and the second end of the guide spring 93 abuts against the inner wall of the sliding tube 62. A hook groove 911 is formed on the side wall of the pressure rod 91 away from the first end of the telescopic portion 632, and the position of the hook groove 911 corresponds to that of the hook plate 6322.

[0090] It should be noted that before closing the top cover 2, first open the top cover 2 to the limit state, press the first end of the pressure rod 91, the guide spring 93 is compressed by the pressure rod 91, so that the hook plate 6322 enters the hook groove 911 of the pressure rod 91 and then release the pressure rod 91. The guide spring 93 resets and pushes the pressure rod 91 to move outwards, so that the hook plate 6322 is buckled in the hook groove 911. At this time, the first limiting spring 64 is compressed, and the second inclined surface 6323 of the telescopic portion 632 is separated from the telescopic block 65, and the telescopic block 65 retracts into the sliding tube 62, so that the sliding tube 62 can smoothly pass through the fixing members 66 on both sides. Then, close the top cover 2, and the hinged rod 61 pushes the sliding tube 62 to move backward along the first direction X, and the rotating rod 4, the connecting member 7 and the display screen 5 are reset.

[0091] Since the first end of the pressure rod 91 passes through the pipe wall of the sliding tube 62 on the side close to the sliding groove 31, when the first end of the pressure rod 91 contacts the bottom wall of the sliding groove 31, the guide spring 93 is compressed by the pressure rod 91, and the hook plate 6322 disengages from the hook groove 911 and returns to the initial state.

[0092] As Figure 1 shown, in a more specific embodiment, a wire placement groove 34 is formed at the top of the test instrument 3.

[0093] It should be noted that a wire placement groove 34 is formed at the top of the test instrument 3, and the wire placement groove 34 can store connection wires, which is convenient for the staff to use after opening the top cover 2 of the tester.

[0094] As Figure 1 、 5As shown, in a more specific embodiment, the wire placement groove 34 is opened on the side of the sliding groove 31 away from the hinge axis of the top cover 2 in the first direction X;

[0095] A second connection hole is opened on the side of the sliding groove 31 close to the wire placement groove 34, and the second connection hole penetrates through to the wire placement groove 34;

[0096] The electricity meter tester further includes: a wire pressing plate 10, a baffle 11, a wire pressing rod 12, and a wire pressing spring 13;

[0097] The wire pressing plate 10 is located within the wire placement groove 34;

[0098] One side edge of the baffle 11 is connected to the side surface of the wire pressing plate 10 away from the sliding groove 31;

[0099] The wire pressing rod 12 is located within the sliding groove 31. The wire pressing rod 12 extends along the first direction X. The first end of the wire pressing rod 12 is close to the second end of the hinge assembly 6. A fourth limiting portion 121 is circumferentially provided at the first end of the wire pressing rod 12. The second end of the wire pressing rod 12 passes through the second connection hole and is connected to the wire pressing plate 10;

[0100] The wire pressing spring 13 is sleeved outside the wire pressing rod 12. The first end of the wire pressing spring 13 abuts against the fourth limiting portion 121, and the second end of the wire pressing spring 13 abuts against the side wall of the sliding groove 31.

[0101] It should be noted that when the top cover 2 of the electricity meter tester is not opened, the connecting wire is located within the wire placement groove 34. The second end of the hinge assembly 6 abuts against the first end of the wire pressing rod 12. At this time, the wire pressing spring 13 is compressed, the wire pressing plate 10 presses the connecting wire tightly, and one side edge of the baffle 11 is connected to the side surface of the wire pressing plate 10 away from the sliding groove 31. The baffle 11 can prevent the connecting wire from slipping out of the wire placement groove 34.

[0102] After the top cover 2 is opened, the hinge assembly 6 disengages from the wire pressing rod 12, the wire pressing spring 13 resets, drives the wire pressing rod 12 to move forward along the first direction X, and the wire pressing rod 12 drives the wire pressing plate 10 to move forward along the first direction X until the wire pressing plate 10 abuts against the side wall of the wire placement groove 34, and the staff can take out the connecting wire from the wire placement groove 34.

[0103] After the top cover 2 is closed, the hinge assembly 6 pushes the wire pressing rod 12 to move backward along the first direction X, the wire pressing spring 13 is compressed, and the wire pressing rod 12 drives the wire pressing plate 10 to move backward along the first direction X until the connecting wire is pressed tightly.

[0104] As Figure 5 shown, in a more specific embodiment, a track 14 is provided on the bottom wall of the wire placement groove 34. The track 14 extends along the first direction X, and the wire pressing plate 10 is installed on the track 14 and can slide along the track 14.

[0105] It should be noted that a track 14 is provided on the bottom wall of the wire placement groove 34. The track 14 extends along the first direction X. The wire pressing plate 10 is installed on the track 14 and can slide along the track 14 to prevent the wire pressing plate 10 from shifting when moving.

[0106] As Figure 5 shown, in a more specific embodiment, the side wall of the wire placement groove 34 away from the sliding groove 31 is a wire pressing wall 341;

[0107] The electricity meter tester further includes: a flexible member 15, a stop bar 16, and an arc-shaped plate 17;

[0108] The first end of the flexible member 15 is connected to the wire pressing plate 10, and the flexible member 15 is arranged along the bottom wall and the wire pressing wall 341 of the wire placement groove 34;

[0109] One end of the stop bar 16 is installed on the side wall of the wire placement groove 34 in the second direction Y. The stop bar 16 is arranged near the connection of the bottom wall and the wire pressing wall 341 of the wire placement groove 34. The stop bar 16 is used to limit the flexible member 15 between the stop bar 16 and the wall surface of the wire placement groove 34;

[0110] The arc-shaped plate 17 is installed on the top of the test instrument 3. The first end of the arc-shaped plate 17 is installed at a position close to the wire pressing wall 341 in the first direction X, and the second end of the arc-shaped plate 17 is arranged towards the wire pressing plate 10.

[0111] It should be noted that when the wire pressing plate 10 moves backward along the first direction X, it pushes the flexible member 15 to move. The stop bar 16 extends along the second direction. The stop bar 16 is arranged near the connection of the bottom wall and the wire pressing wall 341 of the wire placement groove 34 to guide the flexible member 15 to move along the bottom wall and the wire pressing groove of the wire placement groove 34. When the second end of the flexible member 15 contacts the arc-shaped plate 17, the flexible member 15 bends along the arc-shaped plate 17, and in cooperation with the wire pressing plate 10 and the baffle 11, the connecting wire is fastened within the area formed among the wire pressing plate 10, the baffle 11, and the flexible member 15.

[0112] The working process of the present invention is as follows: The initial state is when the top cover 2 of the electricity meter tester is not opened. In the initial state, the hinge assembly 6 is located in the sliding groove 31, the rotating rod 4 is located in the installation groove 32, the display screen 5 is located in the installation groove 32, the first end of the connecting member 7 is at the position farthest from the hinge axis of the top cover 2 in the sliding groove 31, and the fixing block 51 on one side of the display screen 5 is at the position closest to the hinge axis of the rotating rod 4 in the slider hole.

[0113] When opening the top cover 2 of the electricity meter tester, the top cover 2 drives the hinge assembly 6 to move forward along the first direction X. The first end of the hinge assembly 6 brings out the sliding groove 31, and the second end of the hinge assembly 6 moves forward along the first direction X within the sliding groove 31. The second end of the hinge assembly 6 drives the first end of the connecting piece 7 to move forward along the first direction X. The second end of the connecting piece 7 moves forward along the first direction X within the installation groove 32. The second end of the connecting piece 7 drives the rotating rod 4 to rotate around the hinge axis of the rotating rod 4. The second end of the rotating rod 4 gradually moves away from the installation groove 32, and a frictional force is generated between the sliding hole 41 and the fixed block 51. This frictional force pushes the fixed block 51 to slide along the sliding hole 41 in the direction away from the hinge axis of the rotating rod 4, so that the display screen 5 rotates around the hinge axis of the display screen 5. The second end of the display screen 5 gradually moves away from the installation groove 32, and the display screen 5 is tilted. After closing the top cover 2 of the electricity meter tester, all components return to the initial state.

[0114] In summary, the embodiment of the present invention provides an electricity meter tester, which can adjust the tilt angle of the display screen while opening the top cover, facilitating the staff to view.

[0115] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An electric energy meter tester, characterized in that, Comprising: A box body, within which there is a receiving space; A top cover, which is hinged to one side of the top of the box body in a first direction; A testing instrument, which is arranged in the receiving space. A sliding groove and a mounting groove are sequentially arranged at the top of the testing instrument along a second direction. The sliding groove extends along the first direction. A first connection hole penetrating through to the mounting groove is formed on one side of the sliding groove close to the mounting groove, and the first connection hole extends along the first direction; A rotating rod, which is located in the mounting groove. The first end of the rotating rod close to the hinge axis of the top cover is hinged in the mounting groove. A sliding hole is formed on the rotating rod, and the sliding hole extends along the length direction of the rotating rod; A display screen, which is located in the mounting groove. The display screen is located on the side of the rotating rod away from the sliding groove in the second direction. The first end of the display screen away from the hinge axis of the rotating rod is hinged in the mounting groove. A fixing block is arranged on the side of the display screen close to the rotating rod. The fixing block is embedded in the sliding hole and can slide along the sliding hole; A hinge assembly, the first end of which is hinged to the bottom of the top cover; A connecting piece, the first end of which is located in the sliding groove. The first end of the connecting piece is connected to the second end of the hinge assembly. The connecting piece extends along the second direction. The second end of the connecting piece passes through the first connection hole and enters the mounting groove. The second end of the connecting piece is used to drive the rotating rod to rotate around the hinge axis of the rotating rod; Wherein, the first direction and the second direction are perpendicular to each other.

2. The electricity meter tester according to claim 1, characterized in that Sliding grooves are respectively arranged on both sides of the mounting groove at the top of the testing instrument along the second direction. Each sliding groove is provided with the hinge assembly and the connecting piece; There are two rotating rods, and the two rotating rods are respectively located on both sides of the display screen in the second direction. Fixing blocks are arranged on both sides of the display screen close to the two rotating rods. The fixing blocks are embedded in the corresponding sliding holes and can slide along the corresponding sliding holes.

3. The watt-hour meter tester according to claim 1, characterized in that A jacking block is connected to the second end of the connecting piece. The jacking block is located in the mounting groove. The jacking block is located on the side of the hinge axis of the rotating rod away from the hinge axis of the top cover in the first direction. A first inclined surface is arranged on the side of the jacking block close to the hinge axis of the rotating rod.

4. The watt-hour meter tester according to claim 1, characterized in that, The hinge assembly includes: A hinge rod, the first end of which is hinged to the bottom of the top cover; A sliding tube, a first limiting part is arranged at the first end of the sliding tube. The first limiting part is circumferentially arranged along the inner wall of the sliding tube close to the tube orifice. A limiting opening is defined between the first limiting parts. The second end of the sliding tube is connected to the first end of the connecting piece; A telescopic rod, which is located in the sliding tube. The telescopic rod includes a telescopic part and a connecting part. The diameter of the connecting part is smaller than that of the telescopic part. The diameter of the telescopic part is the same as the inner diameter of the sliding tube. The first end of the connecting part passes through the limiting opening and is connected to the second end of the hinge rod. The second end of the connecting part is connected to the first end of the telescopic part. Second inclined surfaces are arranged on both sides of the second end of the telescopic part in the second manner; A first limiting spring, the first limiting spring is sleeved on the outside of the connecting portion, a first end of the first limiting spring abuts against the first limiting portion, and a second end of the first limiting spring abuts against a first end of the telescopic portion; Two telescopic blocks, the telescopic blocks are located inside the sliding tube, the two telescopic blocks are respectively arranged outside the two second inclined surfaces, the telescopic blocks penetrate through the tube wall of the sliding tube, and a second limiting portion is circumferentially arranged at one end of the two telescopic blocks close to each other, and the second inclined surface is used to push the telescopic blocks out of the outer wall of the sliding tube; A pair of fixing members, the pair of fixing members are fixed in the sliding groove, the pair of fixing members are respectively arranged on two sides of the sliding tube in the second direction, and fixing holes are formed in the fixing members, and the fixing holes are used to correspond to the telescopic blocks when the sliding tube slides between the two fixing members; A second limiting spring, the second limiting spring is located inside the sliding tube, and two ends of the second limiting spring are respectively connected to one end of the two telescopic blocks close to each other. When the second limiting spring is in a natural state, the two telescopic blocks do not penetrate out of the outer wall of the sliding tube.

5. The watt-hour meter tester according to claim 4, characterized in that There are multiple pairs of the fixing members, and the multiple pairs of fixing members are sequentially fixed in the sliding groove along the first direction.

6. The watt-hour meter tester according to claim 4, characterized in that, A limiting groove is formed on one side of the side wall of the telescopic portion in the second direction, and a hook plate is arranged on the side wall of the limiting groove far from the first end of the telescopic portion; The hinge assembly further includes: A limiting member, the limiting member is located in the limiting groove, the limiting member includes a pressing rod, a guiding rod and a guiding spring, the diameter of the pressing rod is larger than that of the guiding rod, a first end of the pressing rod penetrates through one side of the tube wall of the sliding tube close to the sliding groove, a second end of the pressing rod is connected to a first end of the guiding rod, a second end of the guiding rod penetrates through the tube wall of the sliding tube far from the sliding groove, third limiting portions are circumferentially arranged at the first end of the pressing rod and the second end of the guiding rod, the sum of the lengths of the pressing rod and the guiding rod is greater than the outer diameter of the sliding tube, the guiding spring is sleeved on the outside of the guiding rod, a first end of the guiding spring abuts against the second end of the pressing rod, a second end of the guiding spring abuts against the inner wall of the sliding tube, and a hook groove is formed on one side of the side wall of the pressing rod far from the first end of the telescopic portion, and the position of the hook groove corresponds to that of the hook plate.

7. The power meter tester according to claim 1, characterized in that A wire placing groove is formed at the top of the test instrument.

8. The watt-hour meter tester according to claim 7, characterized in that, The wire placing groove is formed on one side of the sliding groove far from the top cover hinge shaft in the first direction; A second connection hole is formed on one side of the sliding groove close to the wire placing groove, and the second connection hole penetrates through to the wire placing groove; The electricity meter tester further includes: A wire pressing plate, the wire pressing plate is located in the wire placing groove; A baffle, one side edge of the baffle is connected to the side surface of the wire pressing plate far from the sliding groove; A wire pressing rod, the wire pressing rod is located in the sliding groove, the wire pressing rod extends along the first direction, a first end of the wire pressing rod is close to the second end of the hinge assembly, a fourth limiting portion is circumferentially arranged at the first end of the wire pressing rod, and a second end of the wire pressing rod penetrates through the second connection hole to be connected to the wire pressing plate; A wire-pressing spring, the wire-pressing spring is sleeved outside the wire-pressing rod, a first end of the wire-pressing spring abuts against the fourth limiting part, and a second end of the wire-pressing spring abuts against a side wall of the sliding groove.

9. The watt-hour meter tester according to claim 8, wherein, A track is provided on a bottom wall of the wire placement groove, the track extends along a first direction, and the wire-pressing plate is installed on the track and can slide along the track.

10. The power meter tester according to claim 8, characterized in that, A side wall of the wire placement groove away from the sliding groove is a wire-pressing wall; The electricity meter tester further includes: A flexible member, a first end of the flexible member is connected to the wire-pressing plate, and the flexible member is arranged along the bottom wall and the wire-pressing wall of the wire placement groove; A stop rod, the stop rod extends along a second direction, one end of the stop rod is installed on a side wall of the wire placement groove in the second direction, the stop rod is arranged near a connection of the bottom wall and the wire-pressing wall of the wire placement groove, and the stop rod is used for limiting the flexible member between the stop rod and a wall surface of the wire placement groove; An arc-shaped plate, the arc-shaped plate is installed on a top of the testing instrument, a first end of the arc-shaped plate is installed at a position close to the wire-pressing wall in a first direction, and a second end of the arc-shaped plate faces the wire-pressing plate.

Images