CN219499197U

CN219499197U - Frequency converter protection device and frequency converter

Info

Publication number: CN219499197U
Application number: CN202223547665.3U
Authority: CN
Inventors: 李建平; 梁志威; 陈伯辉; 黄军华; 李宝珠
Original assignee: Shenzhen Universal Control Technology Co ltd
Current assignee: Shenzhen Universal Control Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-08-08
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of frequency conversion devices, in particular to a frequency converter protection device and a frequency converter, comprising: a housing; the protection mechanism is fixedly connected to the surface of the shell; the protection mechanism comprises a wire guide cylinder fixedly connected to the surface of the shell and communicated with the shell, a sealing assembly is arranged on the surface of the wire guide cylinder, and a positioning assembly fixedly connected with the wire guide cylinder is connected to the surface of the sealing assembly in a sliding manner; through setting up seal assembly, after the staff runs through the inboard that goes out the rubber sleeve with connecting wire, the staff only needs corresponding direction rotatory thread bush, and the thread bush passes through the thread block and drives the expansion ring and cooperate the fixed ring extrusion rubber sleeve in opposite directions for the rubber sleeve is to inside shrink and be in the same place with connecting wire's surface closely laminating, and the gap between wire section of thick bamboo and the connecting wire is lived to the rubber sleeve shutoff, and this not only can make the clearance between staff's light shutoff connecting wire and the casing.

Description

Frequency converter protection device and frequency converter

Technical Field

The utility model relates to the technical field of frequency conversion devices, in particular to a frequency converter protection device and a frequency converter.

Background

The frequency converter is an electric control device for controlling the alternating current motor by changing the frequency of a working power supply of the motor, and circuit elements of the frequency converter are all arranged in the protective shell at present. In order to ensure stable electrical connection between the circuit element and the external wire harness, at present, wire holes are usually formed on the surface of the protective shell, so that the wire harness can be normally and electrically connected with the internal circuit element.

Because the gap can be unavoidably existed between the wire hole and the wire harness, the gap between the wire hole and the wire harness is filled by adopting the sealing ring at present, because the diameters of different wire harnesses are different, and the specification of the sealing ring is mostly fixed, when a worker installs the wire harness with a thicker diameter, the wire harness is difficult to penetrate through the sealing ring, and the installation difficulty of the worker can be increased undoubtedly, and a small installation burden is brought to the worker.

Disclosure of Invention

The utility model aims to solve the problems and provide a frequency converter protection device and a frequency converter, which solve the problems that the specification of the existing frequency converter protection device is fixed and the current use requirement cannot be met.

Frequency converter protection device includes: a housing; the protection mechanism is fixedly connected to the surface of the shell; the protection mechanism comprises a wire guide cylinder fixedly connected to the surface of the shell and communicated with the shell, a sealing assembly is arranged on the surface of the wire guide cylinder, and a positioning assembly fixedly connected with the wire guide cylinder is connected to the surface of the sealing assembly in a sliding manner.

Preferably, seal assembly includes solid fixed ring, expansion ring and thread bush, gu fixed ring and expansion ring all sliding connection are in the inboard of wire section of thick bamboo, the expansion ring sets up in gu fixed ring keep away from one side of casing, fixedly connected with rubber sleeve between fixed ring and the expansion ring, rubber sleeve's shape is hourglass form, thread bush rotates to be connected in the surface of wire section of thick bamboo, the inboard threaded connection of thread bush has two and all with expansion ring fixed connection's thread blocks, through setting up seal assembly, after the staff runs through the inboard of going out the rubber sleeve with connecting wire, the thread bush only needs corresponding direction rotatory thread bush, and the thread bush passes through the thread block and drives the expansion ring and cooperate solid fixed ring to extrude the rubber sleeve in opposite directions for the rubber sleeve is to inside shrink and closely laminate together with the surface of connecting wire, and the gap between wire section of thick bamboo and the connecting wire is lived to the rubber sleeve shutoff, and this not only can make the light shutoff gap between connecting wire of staff and the casing, with external impurity separation such as dust outside the casing outside, prepares assorted protection device according to the diameter of connecting wire simultaneously, makes this protection mechanism that can not fit for the whole protection mechanism that can improve the applicable to the wire, and can not adapt to the whole protection mechanism.

Preferably, two guide slots are formed in the surface of the wire guide cylinder, one end of the thread block, far away from the thread sleeve, penetrates through the outer portion of the guide slot, the thread block is connected to the inner wall of the guide slot in a sliding mode, an effective space can be provided for the thread block by the guide slot, and meanwhile the guide slot can limit the moving track of the thread block so as to ensure that the thread block can move normally.

Preferably, the locating component includes fixed connection in the collar on wire section of thick bamboo surface, the constant head tank that is annular distribution is offered to collar inner wall one side of keeping away from the casing, the inner wall rotation of collar is connected with the adjusting ring with thread bush sliding connection, the inboard cross sectional shape of adjusting ring is assorted regular decagon with thread bush surface cross sectional shape, the one end fixedly connected with that the adjusting ring kept away from the casing is annular distribution and respectively in adjacent the locating piece that the constant head tank pegged graft, through setting up the locating component, when constant head tank and locating piece pegged graft, the flexible probability of rubber bush has effectually been reduced to the setting ring accessible constant head tank, locating piece and adjusting ring locking thread bush to the holistic sealing performance of sealing component has been ensured.

Preferably, the cross section shape of locating piece and constant head tank is assorted right angle pentagon, the collar is transparent PVC material component, this success rate that can improve constant head tank and locating piece grafting together to ensure that locating component is whole can normally play the effect.

Preferably, the positioning assembly further comprises a spring sleeved on the surface of the threaded sleeve, the top of the spring is arranged between the shell and the adjusting ring, the spring is always in a compressed state, the spring not only can reset the adjusting ring and the positioning block after the resistance of the adjusting ring is lost, but also can apply a pushing force to the positioning block when the positioning groove is inserted into the positioning block, so that the positioning groove and the positioning block are tightly inserted into each other.

The frequency converter comprises a frequency converter body, the frequency converter body fixed connection is in the interior diapire of casing, the surface electric connection of frequency converter body has connecting wire, the one end that the frequency converter body was kept away from to connecting wire runs through to protection machanism's outside.

The beneficial effects of the utility model are as follows:

1. through setting up seal assembly, after the staff runs through the inboard of rubber sleeve with the connecting wire, the staff only need the corresponding direction rotatory thread bush, the thread bush passes through the thread block and drives the expansion ring and cooperate the fixed ring to extrude the rubber sleeve in opposite directions, make the rubber sleeve inwards shrink and closely laminate together with the surface of connecting wire, the rubber sleeve shutoff wire section of thick bamboo is with the gap between the connecting wire, this not only can make the staff light shutoff gap between connecting wire and the casing, with outside moisture, impurity separation such as dust outside the casing, need not to prepare assorted protection device according to the diameter of connecting wire simultaneously, make this protection machanism can be applicable to the connecting wire of different specifications, with the holistic application scope of improvement protection machanism;

2. through setting up locating component, when constant head tank and locating piece grafting, collar accessible constant head tank, locating piece and adjusting ring locking thread bush, the effectual probability that reduces the rubber sleeve and become flexible to the holistic sealing performance of sealing component has been ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram showing the connection of the protection mechanism to the connecting wires in the present utility model;

FIG. 3 is a schematic cross-sectional view of the protection mechanism and connecting wires of the present utility model;

FIG. 4 is an enlarged view of FIG. 3 at A;

fig. 5 is an exploded view of a partially cut-out structure of the protection mechanism of the present utility model.

In the figure: 1. a housing; 2. a protection mechanism; 21. a wire guide tube; 211. a guide groove; 22. a seal assembly; 221. a fixing ring; 222. a movable ring; 223. a rubber sleeve; 224. a thread sleeve; 225. a screw block; 23. a positioning assembly; 231. a mounting ring; 232. a positioning groove; 233. an adjusting ring; 234. a positioning block; 235. a spring; 3. a transducer body; 4. and connecting wires.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The specific implementation method comprises the following steps: as shown in fig. 1 to 5, the frequency converter protection device includes: a housing 1; the protection mechanism 2 is fixedly connected to the surface of the shell 1; the protection mechanism 2 comprises a wire guide cylinder 21 fixedly connected to the surface of the shell 1 and communicated with the shell 1, a sealing assembly 22 is arranged on the surface of the wire guide cylinder 21, and a positioning assembly 23 fixedly connected with the wire guide cylinder 21 is connected to the surface of the sealing assembly 22 in a sliding manner.

As shown in fig. 3, 4 and 5, the sealing assembly 22 includes a fixed ring 221, a movable ring 222 and a threaded sleeve 224, wherein the fixed ring 221 and the movable ring 222 are both slidably connected to the inner side of the wire barrel 21, the movable ring 222 is disposed on one side of the fixed ring 221 away from the housing 1, a rubber sleeve 223 is fixedly connected between the fixed ring 221 and the movable ring 222, the rubber sleeve 223 is shaped like an hourglass, the threaded sleeve 224 is rotatably connected to the surface of the wire barrel 21, and two threaded blocks 225 which are fixedly connected with the movable ring 222 are screwed on the inner side of the threaded sleeve 224; two guide grooves 211 are formed in the surface of the wire guide 21, one end, far away from the thread sleeve 224, of the thread block 225 penetrates through the outer portion of the guide groove 211, and the thread block 225 is slidably connected to the inner wall of the guide groove 211.

As shown in fig. 3, 4 and 5, the positioning assembly 23 includes a mounting ring 231 fixedly connected to the surface of the wire guide 21, a positioning groove 232 annularly distributed is formed on one side of the mounting ring 231 far away from the inner wall of the housing 1, an adjusting ring 233 slidably connected with the threaded sleeve 224 is rotatably connected to the inner wall of the mounting ring 231, the inner side cross section of the adjusting ring 233 is a regular decagon shape matched with the cross section of the threaded sleeve 224, and a positioning block 234 annularly distributed and inserted into the adjacent positioning groove 232 is fixedly connected to one end of the adjusting ring 233 far away from the housing 1; the cross sections of the positioning block 234 and the positioning groove 232 are right-angle pentagons which are matched, and the mounting ring 231 is a transparent PVC material member; the positioning assembly 23 further comprises a spring 235 sleeved on the surface of the threaded sleeve 224, the spring 235 is propped against and bottoms between the shell 1 and the adjusting ring 233, the spring 235 is always in a compressed state { when the adjusting ring 233 drives the positioning block 234 to be separated from the positioning groove 232, the adjusting ring 233 synchronously extrudes the spring 235, when the rubber sleeve 223 just seals a gap between the wire barrel 21 and the connecting wire 4, then a worker can loosen the adjusting ring 233, at the moment, the spring 235 loses resistance, the spring 235 pushes the adjusting ring 233 back quickly, and the adjusting ring 233 drives the positioning block 234 to be spliced with the positioning groove 232 }.

As shown in fig. 1-4, the frequency converter comprises a frequency converter body 3, wherein the frequency converter body 3 is fixedly connected to the inner bottom wall of the shell 1, a connecting wire 4 is electrically connected to the surface of the frequency converter body 3, and one end, far away from the frequency converter body 3, of the connecting wire 4 penetrates through to the outside of the protection mechanism 2.

When the utility model is used, when a worker needs to pass the external connecting wire 4 through the shell 1 and electrically connect with the frequency converter body 3, the worker only needs to pass the connecting wire 4 through the inner sides of the wire barrel 21 and the rubber sleeve 223 in sequence, at the moment, the connecting wire 4 just passes through the shell 1, the worker can electrically connect the connecting wire 4 with the frequency converter body 3, then the worker pushes the adjusting ring 233 towards the shell 1, the adjusting ring 233 drives the positioning block 234 to be separated from the positioning groove 232, at the moment, the adjusting ring 233 loses resistance, the worker can rotate the adjusting ring 233 towards the corresponding direction, the adjusting ring 233 drives the thread sleeve 224 to rotate, the thread sleeve 224 drives the thread block 225 to move towards the shell 1 through rotation, the thread block 225 drives the movable ring 222 to move towards the shell 1, at the moment, the fixed ring 221 and the movable ring 222 are gradually close, the fixed ring 221 is matched with the movable ring 222 to press the rubber sleeve 223 towards the opposite direction, the rubber sleeve 223 is contracted inwards and is tightly attached to the surface of the connecting wire 4, at the moment, the gap between the wire barrel 21 and the connecting wire 4 is just blocked by the rubber sleeve 223, the moisture is not easy, the gap between the wire barrel 21 and the connecting wire 4 can be blocked, the whole can be easily prevented from being connected with the wire 4, the external device can not need to be matched with the external device 2, and the external device can be applied to the protection device 2, and the external device can not need to be matched with the external device 2, and the external device can be matched with the diameter with the external device 2, and the external device can be applied to the protection with the wire 2, and the device can be protected.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a converter protection device which characterized in that includes:

a housing (1);

the protection mechanism (2), the said protection mechanism (2) is fixedly connected to the surface of the body (1);

the protection mechanism (2) comprises a wire guide cylinder (21) fixedly connected to the surface of the shell (1) and communicated with the shell (1), a sealing assembly (22) is mounted on the surface of the wire guide cylinder (21), and a positioning assembly (23) fixedly connected with the wire guide cylinder (21) is slidably connected to the surface of the sealing assembly (22).

2. The frequency converter protection device of claim 1, wherein: seal assembly (22) are including solid fixed ring (221), expansion ring (222) and thread bush (224), gu fixed ring (221) and expansion ring (222) all sliding connection are in the inboard of wire section of thick bamboo (21), expansion ring (222) set up in solid fixed ring (221) one side of keeping away from casing (1), fixedly connected with rubber bush (223) between solid fixed ring (221) and the expansion ring (222), the shape of rubber bush (223) is the hourglass form, thread bush (224) rotate and connect in the surface of wire section of thick bamboo (21), the inboard threaded connection of thread bush (224) has two and all with expansion ring (222) fixed connection's screw thread piece (225).

3. The frequency converter protection device of claim 2, wherein: two guide grooves (211) are formed in the surface of the wire guide cylinder (21), one end, far away from the thread sleeve (224), of the thread block (225) penetrates through the outer portion of the guide groove (211), and the thread block (225) is connected to the inner wall of the guide groove (211) in a sliding mode.

4. The frequency converter protection device of claim 2, wherein: the positioning assembly (23) comprises a mounting ring (231) fixedly connected to the surface of the wire guide cylinder (21), a positioning groove (232) which is annularly distributed is formed in one side, away from the inner wall of the shell (1), of the mounting ring (231), an adjusting ring (233) which is slidably connected with the threaded sleeve (224) is rotatably connected to the inner wall of the mounting ring (231), the inner side cross section of the adjusting ring (233) and the surface cross section of the threaded sleeve (224) are in a regular decagon shape which is matched, and one end, away from the shell (1), of the adjusting ring (233) is fixedly connected with a positioning block (234) which is annularly distributed and is spliced with the adjacent positioning groove (232) respectively.

5. The frequency converter protection device of claim 4, wherein: the cross sections of the positioning blocks (234) and the positioning grooves (232) are right-angle pentagons which are matched, and the mounting ring (231) is a transparent PVC material member.

6. The frequency converter protection device of claim 4, wherein: the positioning assembly (23) further comprises a spring (235) sleeved on the surface of the threaded sleeve (224), the spring (235) is arranged between the shell (1) and the adjusting ring (233) in a top-bottom mode, and the spring (235) is always in a compressed state.

7. Frequency converter comprising a frequency converter protection device according to any one of claims 1-6 and a frequency converter body (3), characterized in that: the frequency converter body (3) is fixedly connected to the inner bottom wall of the shell (1), a connecting wire (4) is electrically connected to the surface of the frequency converter body (3), and one end, far away from the frequency converter body (3), of the connecting wire (4) penetrates through to the outside of the protection mechanism (2).