Milliohm resistance tester
By using a barrier plate and heat dissipation components in the milliohm resistance tester, the problem of low heat dissipation efficiency caused by unreasonable component settings is solved, achieving higher test accuracy and stability.
Patent Information
- Application Number
- CN202423284704.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing milliohm resistance tester has an unreasonable internal component layout, resulting in poor heat dissipation efficiency and affecting test accuracy.
The component assembly is isolated by a barrier plate, and a heat dissipation component, including heat sinks and heat pipes, is installed on the barrier plate. Heat is discharged to the external environment through the flow channel and heat dissipation channel, thereby improving the operating efficiency and stability of the component assembly.
It effectively reduces heat conduction between components and improves the testing accuracy and operational stability of the instrument.
Smart Images
Figure CN223756818U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of resistance tester, especially to a milliohm resistance tester. BACKGROUND
[0002] The milliohm resistance tester is a kind of precision instrument specially used for measuring tiny resistance value. It is widely used in electrical, electronic, communication and other fields, and is of great significance to ensure the safe operation and stable performance of equipment.
[0003] At present, the internal components of some handheld milliohm resistance testers are not reasonably arranged. Since the handheld milliohm resistance tester is small in size, the battery and other components are attached together, and the heat generated by the battery will be conducted to other components, resulting in reduced test accuracy. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the problem of poor heat dissipation efficiency of the milliohm resistance tester in the prior art and provides a milliohm resistance tester.
[0005] In order to solve the problems in the prior art, the utility model adopts the following technical scheme:
[0006] A milliohm resistance tester includes a shell for accommodating and protecting internal components.
[0007] A component assembly is arranged in the shell and is used to perform the test function of milliohm resistance.
[0008] A barrier plate is fixedly arranged in the shell and is used to isolate the component assembly to improve the internal layout rationality and electromagnetic compatibility of the tester.
[0009] A heat dissipation assembly is arranged on the barrier plate and is attached to the component assembly, which is used to discharge the heat generated by the component assembly during operation to the external environment, thereby improving the operation efficiency and stability of the component assembly.
[0010] Preferably, the component assembly includes a circuit board, a screen, a battery and a connection end, which are all installed inside the shell, and the side of the battery is attached to the heat dissipation assembly on the barrier plate.
[0011] Preferably, the heat dissipation assembly includes two heat dissipation fins, both of which are fixedly connected to one side of the barrier plate, and both sides of the two heat dissipation fins are fixedly provided with heat dissipation pipes, and both the heat dissipation fins are provided with a flow guide groove inside, and one end of the heat dissipation pipe is in communication with the flow guide groove.
[0012] Preferably, the shell includes an outer shell and an inner shell, the outer shell is sleeved on the outer wall of the inner shell, and the inner shell and the outer shell are both provided with a heat dissipation groove on both sides.
[0013] Preferably, the inner shell comprises a rear shell and a front cover, and the rear shell and the front cover are connected by bolts.
[0014] Preferably, a fixing frame is fixedly arranged in the rear shell, and the fixing frame is attached to one side of the screen.
[0015] Preferably, a recess-shaped connecting groove is formed in the lower end of the rear shell, and a connecting end is inserted into the connecting groove.
[0016] Compared with the prior art, the utility model has the beneficial effects that:
[0017] In the utility model, the element assembly is located in the rear shell of the shell, the battery is fixed in the groove of the rear shell through the blocking plate, the blocking plate separates the battery from the screen and the circuit board, heat conduction between elements is avoided, the heat sink is arranged on the blocking plate, the heat pipe on the heat sink sends external air into the heat sink, the heat generated by the battery is taken away through the flow guide groove in the heat sink, the temperature in the shell is stable, and the detection precision of the milliohm resistance tester is improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the application, the schematic embodiment and the description of the utility model are used to explain the utility model, and do not constitute improper limitation on the utility model.
[0019] Figure 1 It is the whole structure schematic view of the utility model;
[0020] Figure 2 It is the front cover, rear shell and shell structure schematic view of the utility model;
[0021] Figure 3 It is the element assembly structure schematic view of the utility model;
[0022] Figure 4 It is the heat dissipation assembly structure schematic view of the utility model.
[0023] In the drawing, serial number: 1, shell; 11, blocking plate; 2, element assembly; 21, circuit board; 22, screen; 23, battery; 24, connecting end; 3, heat dissipation assembly; 31, heat sink; 32, heat pipe; 33, flow guide groove; 34, heat dissipation groove; 4, fixing frame; 5, shell; 51, inner shell; 511, rear shell; 512, front cover; 6, connecting groove. DETAILED DESCRIPTION
[0024] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.
[0025] Embodiments: the embodiment provides a mill ohm resistance tester, refer to Figures 1-4 , specifically, including shell 1, for accommodating and protecting internal elements, shell 1 is composed of plastic material, convenient for staff to hold by hand;
[0026] Component assembly 2 is arranged in shell 1, for executing the test function of mill ohm resistance;
[0027] Barrier plate 11 is fixedly arranged in shell 1, for isolating component assembly 2, to improve the internal layout rationality and electromagnetic compatibility of the tester, barrier plate 11 is used to fix internal elements;
[0028] Heat dissipation assembly 3 is arranged on barrier plate 11 and is attached to component assembly 2, for discharging heat generated by component assembly 2 in the running process to the external environment, thereby improving the running efficiency and stability of component assembly 2, component assembly 2 will generate heat in the running process, the component assembly 2 with larger heat generated is controlled through heat dissipation assembly 3, to improve test accuracy.
[0029] In the specific implementation process, as shown in Figure 2 And Figure 3 , component assembly 2 includes circuit board 21, screen 22, battery 23 and connecting end 24, circuit board 21, screen 22, battery 23 and connecting end 24 are all installed inside shell 1, battery 23 is attached to heat dissipation assembly 3 on barrier plate 11 on one side;
[0030] Battery 23, connecting end 24 and screen 22 are all connected with circuit board 21, battery 23 is fixed in the groove of shell 1 through barrier plate 11, battery 23 needs to be charged, and power needs to be provided for circuit board 21 screen 22 when in use, temperature is easy to rise, battery 23 is attached to heat dissipation assembly 3 on barrier plate 11, effectively reducing the heat emitted by battery 23 in shell 1, guaranteeing the normal operation of screen 22 and circuit board 21;Key is provided on circuit board 21, and rubber sheet is provided on one side of the key, staff controls mill ohm resistance tester by pressing the prompt on the rubber sheet.
[0031] In the specific implementation process, as shown in Figure 3 And Figure 4 , heat dissipation assembly 3 includes two heat dissipation fins 31, two heat dissipation fins 31 are all fixedly connected with one side of barrier plate 11, two heat dissipation fins 31 are both fixedly provided with heat dissipation pipes 32 on both sides, two heat dissipation fins 31 are both provided with flow guide grooves 33 in the inside, and one end of heat dissipation pipe 32 is communicated with flow guide groove 33.
[0032] The heat dissipation fin 31 is made of aluminum and is attached to the battery 23. The heat on the battery 23 is transferred to the heat dissipation fin 31 and then to the heat dissipation pipe 32. The heat dissipation pipe 32 is hollow and communicates with the outside. The cold air from the outside enters the flow guide groove 33 through the heat dissipation pipe 32, and the heat on the heat dissipation fin 31 and the heat dissipation pipe 32 is taken away, thereby achieving the cooling of the inside of the shell 1.
[0033] In the specific implementation process, as shown in Figure 1 and Figure 2 , the shell 1 comprises an outer shell 5 and an inner shell 51. The outer shell 5 is sleeved on the outer wall of the inner shell 51. The inner shell 51 and the outer shell 5 are both provided with heat dissipation grooves 34 on the two sides. The heat dissipation grooves 34 are symmetrically arranged with the heat dissipation pipe 32, so as to guide the cold air from the outside into the flow guide groove 33 in the heat dissipation fin 31. The outer wall of the outer shell 5 is provided with multiple protruding parts to increase the anti-skid performance.
[0034] In the specific implementation process, as shown in Figure 1 and Figure 2 , the inner shell 51 comprises a rear shell 511 and a front cover 512. The rear shell 511 is connected with the front cover 512 through bolts. The front cover 512 and the rear shell 511 are connected through bolts, which facilitates disassembly. The battery 23, the circuit board 21 and the blocking plate 11 are all located in the rear shell 511.
[0035] In the specific implementation process, as shown in Figure 2 and Figure 3 , the rear shell 511 is fixedly provided with a fixing frame 4. The fixing frame 4 is attached to one side of the screen 22. The fixing frame 4 and the blocking plate 11 are located in the same plane. The blocking plate 11 is used for limiting the battery 23, and the fixing frame 4 is used for limiting the screen 22, so as to top the screen 22 on the front cover 512.
[0036] In the specific implementation process, as shown in Figure 2 and Figure 3 , the inner shell 511 is provided with a recess-shaped connecting groove 6 at the lower end. The connecting end 24 is inserted into the connecting groove 6. The connecting end 24 is transversely inserted into the connecting groove 6. After the front cover 512 and the rear shell 511 are connected, the position of the connecting end 24 is fixed. The lower end of the connecting end 24 penetrates through the outer shell 5, which facilitates the connection of the external detection line.
[0037] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A milliohm resistance tester characterized by, The utility model relates to a kind of milliohm resistance test instrument, including: A shell (1) for containing and protecting internal components; Component assembly (2) is arranged in the shell (1), for performing milliohm resistance test function; Barrier plate (11) is fixedly arranged in the shell (1), for isolating the component assembly (2), to improve the internal layout rationality and electromagnetic compatibility of test instrument; Heat dissipation assembly (3) is arranged on the barrier plate (11), and is attached to the component assembly (2), for discharging heat generated by the component assembly (2) during operation to external environment, so as to improve the operation efficiency and stability of the component assembly (2).
2. The milliohmmeter of claim 1 wherein: The component assembly (2) includes circuit board (21), screen (22), battery (23) and connecting end (24), and the circuit board (21), screen (22), battery (23) and connecting end (24) are all installed inside the shell (1), and the battery (23) is attached to the heat dissipation assembly (3) on the barrier plate (11) on one side.
3. The milliohmmeter of claim 1 wherein: The heat dissipation assembly (3) includes two heat dissipation fins (31), and the two heat dissipation fins (31) are fixedly connected with one side of barrier plate (11), and two heat dissipation fins (31) are fixedly provided with heat dissipation pipe (32) on both sides, two heat dissipation fins (31) are all provided with flow guide groove (33) inside, and heat dissipation pipe (32) is communicated with flow guide groove (33) on one end.
4. The milliohmmeter of claim 1 wherein: The shell (1) includes outer shell (5) and inner shell (51), the outer shell (5) is sleeved on the outer wall of the inner shell (51), and the inner shell (51) and the outer shell (5) are both provided with heat dissipation groove (34) on both sides.
5. A milliohmmeter as claimed in claim 4, wherein: The inner shell (51) includes rear shell (511) and front cover (512), and the rear shell (511) and the front cover (512) are connected by bolts.
6. The milliohmmeter of claim 5 wherein: The rear shell (511) is fixedly provided with fixing frame (4) inside, and the fixing frame (4) is attached to one side of screen (22).
7. The milliohmmeter of claim 5 wherein: The recessed connecting groove (6) is provided in the lower end of the rear shell (511) inside, and the connecting end (24) is inserted into the connecting groove (6).