CN213397131U

CN213397131U - Time tester

Info

Publication number: CN213397131U
Application number: CN202022312414.1U
Authority: CN
Inventors: 陈碧琛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-08
Anticipated expiration: 2030-10-16

Abstract

The utility model relates to the technical field of time frequency measurement of signals, and discloses a time tester, which comprises a machine body, wherein the front surface of the machine body is provided with a display screen, a plurality of function keys are arranged below the display screen on the front surface of the machine body, a plurality of signal connectors are arranged on the right side of the display screen on the front surface of the machine body, a plurality of heat dissipation holes are arranged on the rear surface of the machine body, a circuit board is fixedly arranged inside the machine body, the surface of the circuit board is fixedly connected with a signal amplifier, the utility model is provided with a dust guard and a fan, the fan draws air outwards to draw away hot air in the machine body, the hot air is matched with the dust guard to prevent dust from entering the machine body to damage the circuit board, the dust guard has better dust-proof capability, the inside of the support seat is meshed and connected with a lead screw, the lead screw is rotatably, the staff can observe the display screen conveniently without need of bending down or raising head for a long time.

Description

Time tester

Technical Field

The utility model relates to a time frequency measurement technical field of signal specifically is a time tester.

Background

The time tester is a frequency meter, is an electronic measuring instrument specially used for measuring the frequency of a measured signal, and mainly comprises a time base circuit, an input circuit, a counting display circuit and a control circuit; the frequency is the reciprocal of the signal period, i.e. the number of completed periods of the signal per unit time, and generally one second is taken as the basic unit time

However, the existing time tester can not prevent dust from entering the machine body from the heat dissipation holes, and the front end height of the machine body can not be adjusted by the existing time tester, so that a worker can conveniently observe the display screen. Accordingly, one skilled in the art provides a time tester to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a time tester to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a time tester, includes the organism, the display screen has been seted up to the front surface of organism, and the front surface of organism is located the below of display screen and installs a plurality of function key, the right-hand a plurality of signal connector of installing that the front surface of organism is located the display screen, and the rear surface of organism has seted up a plurality of louvre, the inside fixed mounting of organism has the circuit board, the fixed surface of circuit board is connected with signal amplifier, and the surface of circuit board is located signal amplifier's the right-hand fixedly connected with plastic circuit ware, the surface of circuit board is located the right-hand fixedly connected with frequency division circuit ware of plastic circuit ware, and the surface of circuit board is located the right-hand fixedly connected with singlechip of frequency division circuit.

As a further aspect of the present invention: the rear surface fixedly connected with dust guard of organism, the front surface fixedly connected with a plurality of dust screen of dust guard, and the inside embedding of the front end of dust guard installs a plurality of fan.

As a further aspect of the present invention: the utility model discloses a supporting seat, including organism, supporting seat, lead screw, back end position department, the inside meshing of supporting seat is connected with the lead screw, the left and right sides surface of organism is close to the equal fixedly connected with fixed block of back position department, the inside meshing of fixed block is connected with the dwang, the right-hand member fixedly connected with connecting rod of dwang, the backup pad has been cup jointed in the surface activity of connecting rod, the lower extreme fixedly connected with lower margin of backup pad, the right-hand member inside meshing of connecting rod is connected with spacing bolt.

As a further aspect of the present invention: the signal amplifier and the shaping circuit device, the shaping circuit device and the frequency dividing circuit device, the frequency dividing circuit device and the single chip microcomputer, the signal amplifier and the signal connector and the single chip microcomputer and the display screen are electrically connected.

As a further aspect of the present invention: the dust screen is right opposite to the fans and the heat dissipation holes, and the fans are electrically connected with the machine body.

As a further aspect of the present invention: the lead screw passes through the screw rotation and connects in the inside of mounting bracket, the right-hand member diameter of spacing bolt is greater than the diameter of connecting rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with dust guard and fan, the outside convulsions of fan can be taken away the steam that produces in the organism, can also prevent to destroy inside circuit board in the dust entering organism with the dust guard cooperation, have better dustproof ability.

2. The utility model discloses a be provided with the supporting seat, supporting seat internal gearing is connected with the lead screw, and the lead screw rotates to be connected in the inside of mounting bracket, can raise or reduce the height of organism front end through rotating the supporting seat, makes things convenient for the staff to observe the display screen, does not need long-time bow to bow again or the new line.

Drawings

FIG. 1 is a schematic diagram of a time tester;

FIG. 2 is a schematic view showing an internal structure of a body in a time measuring apparatus;

FIG. 3 is a rear schematic view of a body of a time tester;

FIG. 4 is a front view of a mount in a time tester;

fig. 5 is an enlarged view of a in fig. 1.

In the figure: 1. a body; 2. a display screen; 3. a function key; 4. a signal connector; 5. heat dissipation holes; 6. a circuit board; 7. a signal amplifier; 8. a shaping circuit device; 9. a frequency division circuit; 10. a single chip microcomputer; 11. a dust-proof plate; 12. a dust screen; 13. a fan; 14. a mounting frame; 15. a supporting seat; 16. a screw rod; 17. a fixed block; 18. rotating the rod; 19. a connecting rod; 20. a support plate; 21. ground feet; 22. and a limiting bolt.

Detailed Description

Please refer to fig. 1-5, in an embodiment of the present invention, a time tester, including a machine body 1, a display screen 2 has been seted up on the front surface of machine body 1, and a plurality of function key 3 has been installed to the below that the front surface of machine body 1 is located display screen 2, a plurality of signal connector 4 has been installed to the right-hand of the front surface of machine body 1 that is located display screen 2, and a plurality of louvre 5 has been seted up to the rear surface of machine body 1, the inside fixed mounting of machine body 1 has a circuit board 6, the fixed surface of circuit board 6 is connected with signal amplifier 7, and the surface of circuit board 6 is located the right-hand fixedly connected with shaping circuit 8 of signal amplifier 7, the surface of circuit board 6 is located the right-hand fixedly connected with frequency divider 9 of shaping circuit 8, and the surface of circuit board 6 is located the right-hand fixedly connected with singlechip 10 of, Shaping circuit ware 8 and frequency division circuit ware 9, frequency division circuit ware 9 and singlechip 10, signal amplifier 7 and signal connector 4 and singlechip 10 and the equal electric connection of display screen 2, the rear surface fixed connection of organism 1 has dust guard 11, the front surface fixed connection of dust guard 11 has a plurality of dust screen 12, and the inside embedding of front end of dust guard 11 installs a plurality of fan 13, a plurality of dust screen 12 is just to a plurality of fan 13 and louvre 5,

fan

13 and 1 electric connection of organism, fan 13 convulsions outwards, prevent that the dust from getting into in the organism 1.

In fig. 1, 4 and 5: the front end of the lower surface of the machine body 1 is fixedly connected with a mounting frame 14, a supporting seat 15 is arranged below the machine body 1, the inner meshing of the supporting seat 15 is connected with a screw rod 16, the screw rod 16 is rotatably connected inside the mounting frame 14 through screws, the positions of the left side surface and the right side surface of the machine body 1, which are close to the rear end, are both fixedly connected with fixed blocks 17, the inner meshing of the fixed blocks 17 is connected with a rotating rod 18, the right end of the rotating rod 18 is fixedly connected with a connecting rod 19, the outer surface of the connecting rod 19 is movably sleeved with a supporting plate 20, the lower end of the supporting plate 20 is fixedly connected with a ground foot 21, the inner meshing of the right end of the connecting rod 19 is connected with a limit bolt 22, the diameter of the right end of the limit bolt 22 is larger than that of the connecting rod, the staff is convenient to observe the display screen 2.

The utility model discloses a theory of operation is: when the tester is used, a worker places the tester beside a target to be tested, adjusts the height of the front end of the machine body 1 according to whether the tester is convenient to observe the display screen 2, grasps the supporting seat 15 and rotates clockwise if the tester needs to be lifted, the screw rod 16 slowly rotates out of the supporting seat 15, the front end of the machine body 1 is lifted, and if the tester needs to be lowered, the operation is performed if the tester needs to be lowered; after the adjustment, one end of an electric wire configured by the tester is inserted into the signal connecting port 4, the other end of the electric wire is inserted into a tested object, the tested object transmits a signal to a circuit board 6 in the machine body 1, and the time frequency of the signal of the tested object is finally displayed on the display screen 2 through a series of conversions on the circuit board 6; the staff can open fan 13, and fan 13 convulsions outward prevents that the dust from getting into organism 1, and dust guard 11 also can prevent dust.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The time tester comprises a machine body (1) and is characterized in that a display screen (2) is arranged on the front surface of the machine body (1), a plurality of function keys (3) are arranged below the display screen (2) on the front surface of the machine body (1), a plurality of signal connectors (4) are arranged on the right side of the display screen (2) on the front surface of the machine body (1), a plurality of heat dissipation holes (5) are arranged on the rear surface of the machine body (1), a circuit board (6) is fixedly arranged inside the machine body (1), a signal amplifier (7) is fixedly connected to the surface of the circuit board (6), a shaping circuit device (8) is fixedly connected to the right side of the signal amplifier (7) on the surface of the circuit board (6), and a frequency divider circuit (9) is fixedly connected to the right side of the shaping circuit device (8) on the surface of the circuit board (6), and the surface of the circuit board (6) is positioned on the right side of the frequency division circuit device (9) and is fixedly connected with a singlechip (10).

2. The time tester of claim 1, wherein a dust guard (11) is fixedly connected to the rear surface of the machine body (1), a plurality of dust screens (12) are fixedly connected to the front surface of the dust guard (11), and a plurality of fans (13) are embedded in the front end of the dust guard (11).

3. The time tester of claim 1, characterized in that, the lower surface front end fixedly connected with mounting bracket (14) of organism (1), and the below of organism (1) installs supporting seat (15), the inside meshing of supporting seat (15) is connected with lead screw (16), the left and right sides surface of organism (1) is close to equal fixedly connected with fixed block (17) of rear position department, the inside meshing of fixed block (17) is connected with dwang (18), the right-hand member fixedly connected with connecting rod (19) of dwang (18), backup pad (20) have been cup jointed in the surface activity of connecting rod (19), the lower extreme fixedly connected with lower margin (21) of backup pad (20), the right-hand member inside meshing of connecting rod (19) is connected with spacing bolt (22).

4. The time tester of claim 1, wherein the signal amplifier (7) and the shaping circuit (8), the shaping circuit (8) and the frequency dividing circuit (9), the frequency dividing circuit (9) and the single chip microcomputer (10), the signal amplifier (7) and the signal connector (4), and the single chip microcomputer (10) and the display screen (2) are electrically connected.

5. A time tester according to claim 2, wherein a plurality of said dust screens (12) are opposite to a plurality of fans (13) and heat dissipation holes (5), said fans (13) being electrically connected to the machine body (1).

6. A time tester according to claim 3, characterized in that the screw (16) is screwed inside the mounting frame (14), and the diameter of the right end of the limit bolt (22) is larger than the diameter of the connecting rod (19).