Frequency converter
By introducing a wiring buffer sleeve and buffer block structure into the inverter, the problem of easy loosening of cable connections is solved, and higher connection stability and waterproof performance are achieved to ensure the safe operation of the system.
Patent Information
- Application Number
- CN202422452070.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The existing inverters lack an effective buffering mechanism during wiring, which leads to loosening or damage at the cable connection, affecting the normal operation of the system.
A frequency converter is designed, using a wiring buffer sleeve and a buffer block structure. Through the combination of buffer spring and seal sleeve, the cable is buffered and fixed, and the connection stability and waterproof performance are enhanced.
It effectively reduces the risk of damage to the cable when pulled externally, improves the reliability and waterproofing of the connection, and ensures the stable operation of the system.
Smart Images
Figure CN223079465U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to frequency converters, and particularly relates to a frequency converter. Background Art
[0002] During the wiring process of existing frequency converters, the cable fixing method is single and lacks an effective buffering mechanism. When the cable is pulled by an external force, the connection part is prone to looseness or even damage, affecting the normal operation of the system.
[0003] In view of the above problems, there is an urgent need in the market for a new type of frequency converter that can effectively improve the protection level and optimize the cable connection stability to meet the higher requirements for the safe, stable and efficient operation of equipment in industrial applications. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a frequency converter to solve the problem that the traditional frequency converter lacks a buffering mechanism in the connection wire harness and is prone to looseness or damage due to pulling.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A frequency converter includes a frequency converter main body. The frequency converter main body is provided with control buttons, and the control buttons are provided with a display screen, and the display screen is located above the frequency converter main body. The interior of the frequency converter main body is provided with heat dissipation grooves. A plurality of wiring hole columns penetrate downward inside the frequency converter main body. A fixing bin is provided inside the frequency converter main body. A sealing bin cover is fixedly connected inside the fixing bin through bolts. A plurality of wiring buffer sleeves are provided inside the rear end of the fixing bin.
[0006] Wherein, a communication chute is provided inside the center of the wiring buffer sleeve, and the opening of the communication chute penetrates inside the fixing bin. The wiring buffer sleeve is communicated with the fixing bin through the communication chute.
[0007] Wherein, a wiring buffer block is slidably connected inside the wiring buffer sleeve. A fixing wire hole penetrates downward inside the center of the lower end of the wiring buffer block. A fixing bolt is threadedly connected inside the center of the upper end of the wiring buffer block.
[0008] Wherein, the lower end of the fixing bolt penetrates inside the fixing wire hole. An insulating hole column is threadedly connected inside the center of the wiring buffer block. The inside of the insulating hole column is communicated with the inside of the fixing wire hole and is flush with the inner wall of the fixing wire hole.
[0009] Wherein, the insulating hole column penetrates inside the lower ends of the frequency converter main body and the wiring buffer sleeve and is slidably connected inside the lower ends of the frequency converter main body and the wiring buffer sleeve. A spring groove is provided inside the outer side of the center of the lower end of the wiring buffer block. A buffer spring is provided inside the spring groove.
[0010] Among them, the wiring buffer block and the insulating hole column are elastically connected inside the wiring buffer sleeve through a buffer spring. The lower end of the insulating hole column communicates with a sealing sleeve. The sealing sleeve is slidably connected inside the lower end of the frequency converter main body, and the wiring hole column is threadedly connected inside the lower end of the sealing sleeve.
[0011] Among them, an expansion sealing gasket is arranged inside the sealing sleeve, and the expansion sealing gasket is located above the wiring hole column.
[0012] Among them, the inside of the expansion sealing gasket is hollow and elastic.
[0013] Among them, the inner walls of the wiring hole column and the expansion sealing gasket are flush with the inner wall of the insulating hole column.
[0014] Among them, an annular sealing ring is arranged between the fixed bin and the sealing bin cover.
[0015] Compared with the prior art, the utility model has the following beneficial effects: effectively reducing the risk of damage caused by external force pulling the wire harness and ensuring connection reliability.
[0016] In addition, the wire harness connection part of the utility model has better waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structural schematic diagram of the frequency converter of the utility model;
[0018] Figure 2 is a three-dimensional sectional structural schematic diagram of the frequency converter of the utility model;
[0019] Figure 3 is Figure 2 the enlarged schematic diagram at A in
[0020] Figure 4 is a three-dimensional structural schematic diagram of the wiring buffer sleeve of the utility model;
[0021] Figure 5 is a three-dimensional sectional structural schematic diagram of the wiring buffer sleeve of the utility model.
[0022] In the drawings: 1. Frequency converter main body; 2. Control buttons; 3. Display screen; 4. Heat dissipation slots; 5. Wiring hole column; 6. Fixed bin; 7. Sealing bin cover; 8. Wiring buffer sleeve; 9. Connecting chute; 10. Wiring buffer block; 11. Fixed wire hole; 12. Fixed bolt; 13. Insulating hole column; 14. Spring groove; 15. Buffer spring; 16. Sealing sleeve; 17. Expansion sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] As Figures 1-5 shown, the frequency converter in this embodiment includes a frequency converter main body 1. There is an operation button 2 arranged on the upper side of the frequency converter main body 1. There is a display screen 3 arranged on the upper side of the operation button 2, and the display screen 3 is located on the upper side of the frequency converter main body 1. A heat dissipation groove 4 is opened inside the upper end of the frequency converter main body 1. A plurality of wiring hole columns 5 penetrate downward inside the lower end of the frequency converter main body 1. The frequency converter main body 1 controls the rotation speed of the water pump motor by changing the power frequency to achieve precise control of the water pump flow rate and head. Among them, the frequency converter main body 1 can control the flow rate and head through the operation button 2 and display them through the display screen 3. The frequency converter main body 1 can dissipate heat through the heat dissipation groove 4, and is connected to the water pump through a wire harness by a plurality of wiring hole columns 5 at the lower end. Moreover, the frequency converter main body 1 adopts a waterproof shell, which can not only prevent moisture but also prevent dust.
[0025] In this embodiment, the circuits and controls involved inside the frequency converter main body 1 are all prior arts and will not be elaborated here too much.
[0026] In this embodiment, a fixed bin 6 is provided inside the lower side of the frequency converter main body 1. A sealed bin cover 7 is fixedly connected inside the fixed bin 6 by bolts. An annular sealing ring for waterproofing and dustproofing is provided between the fixed bin and the sealed bin cover. A plurality of wiring buffer sleeves 8 are provided inside the rear end of the fixed bin 6. A communication chute 9 is provided inside the center of the wiring buffer sleeve 8, and the opening of the communication chute 9 penetrates through the inside of the fixed bin 6. The wiring buffer sleeve 8 communicates with the fixed bin 6 through the communication chute 9. A wiring buffer block 10 is slidably connected inside the wiring buffer sleeve 8. A fixed wire hole 11 penetrates downward through the center of the lower end of the wiring buffer block 10. A fixing bolt 12 is threadedly connected inside the center of the upper end of the wiring buffer block 10. The lower end of the fixing bolt 12 penetrates through the inside of the fixed wire hole 11. An insulating hole column 13 is threadedly connected inside the center of the wiring buffer block 10. The inside of the insulating hole column 13 communicates with the inside of the fixed wire hole 11 and is flush with the inner wall of the fixed wire hole 11. The insulating hole column 13 penetrates through the inside of the lower ends of the frequency converter main body 1 and the wiring buffer sleeve 8 and is slidably connected inside the lower ends of the frequency converter main body 1 and the wiring buffer sleeve 8. During the process of connecting the water pump to the wiring harness of the frequency converter main body 1, the wiring harness is connected to the frequency converter main body 1 through the wiring buffer sleeve 8 and the wiring buffer block 10. The stripped part of the wiring harness is inserted through the inside of the lower end of the wiring hole column 5, passes through the inside of the insulating hole column 13 and is inserted into the inside of the fixed wire hole 11, and then the wiring harness is fixed inside the fixed wire hole 11 by the fixing bolt 12, so as to fix the wiring harness inside the wiring buffer block 10. And the non-stripped part of the wiring harness is inserted into the inside of the wiring hole column 5 and the insulating hole column 13. Since the wiring buffer sleeve 8 and the wiring buffer block 10 are made of metal materials, the wiring hole column 5 and the insulating hole column 13 are made of insulating materials, and the outer wall of the wiring buffer block 10 is closely attached to the inner wall of the wiring buffer sleeve 8, and the wiring buffer sleeve 8 is connected to the inside of the frequency converter main body 1, the wiring harness can be connected to the inside of the frequency converter main body 1 through the wiring buffer sleeve 8 and the wiring buffer block 10, and can be insulated from the outside of the frequency converter main body 1 through the fitting of the non-stripped part with the wiring hole column 5 and the insulating hole column 13, preventing the wiring harness from being exposed to water and short-circuiting outside.
[0027] In this embodiment, a spring groove 14 is formed inside the outer side of the center at the lower end of the wiring buffer block 10. A buffer spring 15 is arranged inside the spring groove 14. The wiring buffer block 10 and the insulating hole column 13 are elastically connected inside the wiring buffer sleeve 8 through the buffer spring 15. Since the wiring buffer block 10 can be elastically connected inside the wiring buffer sleeve 8 through the buffer spring 15, the wiring hole column 5 and the insulating hole column 13 can be elastically connected inside the frequency converter main body 1 and the wiring buffer sleeve 8 through the buffer spring 15, and the fixing bolt 12 can be slidably connected inside the communication chute 9. Therefore, when the wire harness is pulled, the pulling force on the wire harness can be buffered by the sliding of the wiring buffer block 10 inside the wiring buffer sleeve 8, preventing the wire harness from being pulled out of the wiring buffer block 10, thereby improving the connection stability between the wire harness and the inside of the frequency converter main body 1 (there is a certain wire harness pulling allowance at the welding part of the wire harness and the frequency converter main body). That is, when accidentally pulled, the previous rigid connection would directly pull off the wire. Through the buffer setting, there will be a certain pulling stroke, and the greater acting force will not directly act on the welding part. Through the buffering of this short-distance stroke, it can, to a certain extent, avoid the wire being rigidly pulled and causing the welding part to fall off. When the pulling force disappears, the buffer spring resets and at the same time resets the wiring buffer block. Therefore, this wire harness pulling allowance always exists.
[0028] In this embodiment, the lower end of the insulating hole column 13 is communicated with a sealing sleeve 16. The sealing sleeve 16 is slidably connected inside the lower end of the frequency converter main body 1, and the wiring hole column 5 is threadedly connected inside the lower end of the sealing sleeve 16. An expansion sealing pad 17 is arranged inside the sealing sleeve 16, and the expansion sealing pad 17 is located at the upper end of the wiring hole column 5. The inside of the expansion sealing pad 17 is hollow and elastic. The inner walls of the wiring hole column 5 and the expansion sealing pad 17 are flush with the inner wall of the insulating hole column 13. When the wire harness is fixed inside the wiring hole column 5 and the insulating hole column 13, it can be fixed through the sealing sleeve 16 between the wiring hole column 5 and the insulating hole column 13, and the lower end of the insulating hole column 13 can be blocked by the sealing sleeve 16. When the wiring hole column 5 is rotated upward, the wiring hole column 5 will upwardly press the expansion sealing pad 17 inside the sealing sleeve 16, increasing the air pressure inside the expansion sealing pad 17, causing the inner wall of the expansion sealing pad 17 to expand towards the wire harness end and fit with the wire harness. This can not only fix the wire harness inside the sealing sleeve 16, preventing the wire harness from being pulled out of the fixed wire hole 11 when being pulled, but also block the lower end of the insulating hole column 13, preventing water vapor and dust from entering the frequency converter main body 1 through the fixed wire hole 11 and the insulating hole column 13, thereby improving the waterproof performance of the frequency converter main body 1.
[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A frequency converter, comprising a frequency converter main body (1), the frequency converter main body (1) is provided with operation buttons (2), the operation buttons (2) are provided with a display screen (3), and the display screen (3) is located above the frequency converter main body (1), and a heat dissipation groove (4) is formed inside the frequency converter main body (1); It is characterized in that: A plurality of wiring hole columns (5) penetrate downward inside the frequency converter main body (1), a fixing bin (6) is formed inside the frequency converter main body (1), the fixing bin (6) is connected with a sealed bin cover (7) by bolts, and a plurality of wiring buffer sleeves (8) are arranged inside the fixing bin (6).
2. The frequency converter according to claim 1, characterized in that: A communication chute (9) is formed inside the center of the wiring buffer sleeve (8), and the opening of the communication chute (9) penetrates inside the fixing bin (6), and the wiring buffer sleeve (8) communicates with the fixing bin (6) through the communication chute (9).
3. The frequency converter according to claim 2, characterized in that: A wiring buffer block (10) is slidably connected inside the wiring buffer sleeve (8), a fixing wire hole (11) penetrates downward inside the center of the lower end of the wiring buffer block (10), and a fixing bolt (12) is threadedly connected inside the center of the upper end of the wiring buffer block (10).
4. The frequency converter according to claim 3, wherein: The lower end of the fixing bolt (12) penetrates inside the fixing wire hole (11), an insulating hole column (13) is threadedly connected inside the center of the wiring buffer block (10), the inside of the insulating hole column (13) communicates with the inside of the fixing wire hole (11) and is flush with the inner wall of the fixing wire hole (11).
5. The frequency converter according to claim 4, wherein: The insulating hole column (13) penetrates inside the lower ends of the frequency converter main body (1) and the wiring buffer sleeve (8) and is slidably connected inside the lower ends of the frequency converter main body (1) and the wiring buffer sleeve (8), a spring groove (14) is formed inside the outside of the center of the lower end of the wiring buffer block (10), and a buffer spring (15) is arranged inside the spring groove (14).
6. The frequency converter according to claim 5, wherein: The wiring buffer block (10) and the insulating hole column (13) are elastically connected inside the wiring buffer sleeve (8) through the buffer spring (15), the lower end of the insulating hole column (13) communicates with a sealing sleeve (16), the sealing sleeve (16) is slidably connected inside the lower end of the frequency converter main body (1), and the wiring hole column (5) is threadedly connected inside the lower end of the sealing sleeve (16).
7. The frequency converter according to claim 6, wherein: An expansion sealing gasket (17) is arranged inside the sealing sleeve (16), and the expansion sealing gasket (17) is located above the wiring hole column (5).
8. The frequency converter according to claim 7, characterized in that: The inside of the expansion sealing gasket (17) is hollow and has elasticity.
9. The frequency converter according to claim 8, wherein: The inner walls of the wiring hole column (5) and the expansion sealing gasket (17) are both flush with the inner wall of the insulating hole column (13).
10. The frequency converter according to claim 9, characterized in that: A ring-shaped sealing gasket is arranged between the fixing bin (6) and the sealed bin cover (7).