Soft starter with dustproof structure

Abstract

A soft starter with a dustproof structure comprises a shell and a shell cover covering an opening in the rear end of the shell, at least one fan is arranged on the bottom face of a top plate of the shell, and an air inlet matched with the fan in position and allowing external air to enter the shell when the fan runs is formed in the top face of the top plate. An air outlet allowing air in the shell to leave the shell is formed in the bottom face of a bottom plate of the shell, dustproof baffles covering the air inlet and the air outlet and positioning seats symmetrically distributed on the two sides of the dustproof baffles are arranged on the top face of the top plate and the bottom face of the bottom plate correspondingly, and connecting arms are arranged at the two ends of each dustproof baffle correspondingly. And when the dustproof baffle provides dustproof protection for the air inlet or the air outlet, the positioning seats are allowed to provide anti-falling constraint for the connecting arms, and when the dustproof protection of the dustproof baffle for the air inlet or the air outlet is released, the two connecting arms are separated from the corresponding positioning seats at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of soft starters, in particular to a soft starter with a dust-proof structure. Background Art

[0002] A soft starter is a motor control device that integrates functions such as soft starting, soft stopping, light-load energy saving, and multiple protection functions of a motor. It can not only start the motor smoothly without impact throughout the starting process, but also adjust parameters during the starting process according to the characteristics of the motor load, such as the current limiting value, starting time, etc.

[0003] Publication (Announcement) No.: CN219164906U discloses a heat-dissipating and dust-proof intelligent motor soft starter, which includes a mounting plate. The front side of the mounting plate is bolted with a soft starter body. Positioning mechanisms are bolted to both the left and right sides of the mounting plate. Plug-in plates are inserted into the top and bottom of the front side of the positioning mechanism. Positioning grooves are formed on the opposite sides of the upper and lower plug-in plates. A dust-proof cover shell is fixedly connected between the left and right plug-in plates. Heat-dissipating fans are fixedly connected through both the left and right sides of the dust-proof cover shell. An installation net box is fixedly connected through the front side of the dust-proof cover shell. The inner cavity of the installation net box is filled with granular desiccant. Threading openings are formed on both the top and bottom of the dust-proof cover shell. Clamping mechanisms are welded to both the left and right sides of the side away from the soft starter body of the threading opening. A temperature sensor and a controller are bolted to the front side of the inner cavity of the dust-proof cover shell respectively. This kind of soft starter can play a dust-proof role by installing a dust-proof cover shell outside the soft starter body to avoid dust contacting the dust-proof cover shell. However, there are defects. That is, the function of the dust-proof cover shell is no different from that of a conventional shell, that is, the electronic components of the soft starter are set in a closed space to achieve dust-proofing. No dust-proof measures are taken at the position where the heat-dissipating fan is set on the dust-proof cover shell, resulting in dust entering the inside of the dust-proof cover shell under the operation of the heat-dissipating fan and adhering to the electronic components, thereby affecting the heat dissipation of the electronic components. Summary of the Utility Model

[0004] The utility model aims to solve the above-mentioned drawbacks of the prior art and provides a soft starter with a dust-proof structure to solve the above problems.

[0005] The technical solution adopted by the present utility model to solve its technical problems: This soft starter with a dust-proof structure includes a housing and a housing cover covering the rear opening of the housing. At least one fan is provided on the bottom surface of the top plate of the housing, and an air inlet that matches the position of the fan and allows external air to enter the interior of the housing when the fan operates is formed on the top surface of the top plate. An air outlet that allows the air inside the housing to leave the housing is formed on the bottom surface of the bottom plate of the housing. Dust-proof baffles covering the air inlet and the air outlet, and positioning seats symmetrically distributed on both sides of the dust-proof baffles are provided on the top surface of the top plate and the bottom surface of the bottom plate. Connecting arms are provided at both ends of the dust-proof baffle, and when the dust-proof baffle provides dust-proof protection for the air inlet or the air outlet, the positioning seat provides anti-disengagement constraint for the connecting arm, and when the dust-proof protection of the air inlet or the air outlet by the dust-proof baffle is released, the two connecting arms are simultaneously disengaged from the corresponding positioning seats.

[0006] Further improvement: The positioning seat extends along the length direction of the top plate or the bottom plate, and a guiding channel extending inward is formed on its upper end surface. The upper end of the guiding channel is provided with an upper opening on the positioning seat, and the lower end is provided with a connected positioning node on the positioning seat. The connecting arm that can move along the guiding channel and reach the positioning node is placed in the upper opening, and when the connecting arm reaches the positioning node, the dust-proof baffle abuts against the top plate or the bottom plate.

[0007] Further improvement: The positioning node includes a semi-enclosing wall provided on the positioning seat and in an arc shape, and a placement space defined within the semi-enclosing wall and allowing the connecting arm to be placed inside. The semi-enclosing wall abuts against the connecting arm at least in the direction opposite to the guiding direction.

[0008] Further improvement: An anti-disengagement sleeve with a configuration consistent with the combined configuration of the inner wall of the guiding channel and the semi-enclosing wall and used to reduce the lateral width is provided between the inner wall of the guiding channel and the semi-enclosing wall. The anti-disengagement sleeve extends along the length direction of the positioning seat.

[0009] Further improvement: The anti-disengagement sleeve is made of rubber material.

[0010] Further improvement: The connecting arm is set as a columnar member, which includes a positioning part, two middle parts, and two connecting parts. The positioning part is placed inside the positioning node and both ends extend outside the positioning seat and are connected to the corresponding middle parts. One end of the connecting part is provided on the dust-proof baffle, and the other end is connected to the middle part.

[0011] Further improvement: The middle part includes a vertical section, and longitudinal sections and transverse sections located at both ends of the vertical section. The longitudinal section and the transverse section are vertically arranged.

[0012] The beneficial effects of the present utility model are:

[0013] The dust-proof baffle at the air inlet and outlet of the present utility model is detachable, so that the cleaning of the dust-proof baffle can be more thorough, that is, the dust adhering to the dust-proof baffle can be completely removed by washing with water, thereby ensuring the dust-proof effect of the dust-proof baffle and also ensuring the ventilation. Brief Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the bottom surface of the present utility model, in which the dust-proof baffle, the positioning seat, and the connecting arm are hidden;

[0016] Figure 3 is a schematic structural diagram of the top plate of the outer shell of the present utility model, in which the dust-proof baffle and the connecting arm are hidden;

[0017] Figure 4 For the present utility model Figure 3 is a partial enlarged schematic diagram of part A;

[0018] Figure 5 is a schematic structural diagram of the top plate of the outer shell of the present utility model;

[0019] Figure 6 For the present utility model Figure 5 is a partial enlarged schematic diagram of part B. Detailed Embodiment

[0020] The present utility model will be further described below with reference to the drawings:

[0021] Referring to the attached drawings: This soft starter with a dust-proof structure includes a housing 1 and a housing cover 2 covering the rear opening of the housing 1. At least one fan 3 is provided on the bottom surface of the top plate of the housing 1, and an air inlet 11 that matches the position of the fan 3 and allows external air to enter the interior of the housing 1 when the fan 3 operates is formed on the top surface of the top plate. An air outlet 12 that allows the air inside the housing 1 to leave the housing 1 is formed on the bottom surface of the bottom plate of the housing 1. Dust-proof baffles 4 covering the air inlet 11 and the air outlet 12, and positioning seats 5 symmetrically distributed on both sides of the dust-proof baffles 4 are provided on the top surface of the top plate and the bottom surface of the bottom plate. Connecting arms 6 are provided at both ends of the dust-proof baffle 4, and when the dust-proof baffle 4 provides dust-proof protection for the air inlet 11 or the air outlet 12, the positioning seats 5 provide anti-disengagement constraints for the connecting arms 6, and when the dust-proof protection of the air inlet 11 or the air outlet 12 by the dust-proof baffle 4 is removed, the two connecting arms 6 are simultaneously disengaged from the corresponding positioning seats 5. The principle of the present utility model is that dust-proof baffles 4 are provided at both the air inlet 11 and the air outlet 12 of the housing 1. In this way, under the guiding action of the fan 3, the air can first pass through the dust-proof baffle 4 before entering the housing 1, and then the dust-proof baffle 4 is used to filter the impurities carried in the air, so that the air entering the interior of the housing 1 is relatively clean. The air outlet 12 also serves to prevent, and the dust-proof baffle 4 is detachable, that is, it is realized by using the connecting arms 6 and the positioning seats 5 connected thereto, so that the dust-proof baffle 4 can be separated from the housing 1 when cleaning the dust-proof baffle 4, so that the cleaning of the dust-proof baffle 4 can be more thorough, that is, the dust adhering to the dust-proof baffle 4 can be completely removed by washing, so as to ensure the dust-proof effect of the dust-proof baffle 4 while also ensuring the ventilation.

[0022] The positioning seat 5 extends along the length direction of the top plate or the bottom plate. A guiding channel 51 extending inward is formed on its upper end surface. The upper end of the guiding channel 51 is provided with an upper opening 51-a on the positioning seat 5, and the lower end is provided with a connected positioning node 51-b on the positioning seat 5. The connecting arm 6 that can move along the guiding channel 51 and reach the positioning node 51-b is placed in the upper opening 51-a, and when the connecting arm 6 reaches the positioning node 51-b, the dust-proof baffle 4 is allowed to abut against the top plate or the bottom plate. The positioning node 51-b is used to limit the final position of the connecting arm 6 on the positioning seat 5, and the guiding channel 51 is used to guide the connecting arm 6 to reach the positioning node 51-b. And the combination of the two also extends the total length of the route for the connecting arm 6 to reach the positioning node 51-b, which can also increase the difficulty of the connecting arm 6 escaping, so as to ensure the setting stability of the dust-proof baffle 4 on the top plate or the bottom plate and be able to always remain at the air inlet 11 and the air outlet 12.

[0023] The positioning node 51-b includes a semi-enclosing wall 51-b1 that is arranged on the positioning base 5 and is arc-shaped, and a placement space 51-b2 that is defined within the semi-enclosing wall 51-b1 and allows the connecting arm 6 to be placed inside. The semi-enclosing wall 51-b1 abuts against the connecting arm 6 at least in the direction opposite to the guiding direction. When the connecting arm 6 reaches the placement space 51-b2 of the positioning node 51-b, the semi-enclosing wall 51-b1 will block the connecting arm 6, abutting against the connecting arm 6 at least in the direction opposite to the guiding direction, thereby preventing the connecting arm 6 from returning along the original path and completing the positioning state of the connecting arm 6 and the positioning base 5 at the final assembly position.

[0024] An anti-disengagement sleeve 7 with a configuration consistent with the combined configuration of the inner wall of the guiding channel 51 and the semi-enclosing wall 51-b1 and used to reduce the lateral width is provided between the inner wall of the guiding channel 51 and the semi-enclosing wall 51-b1. The anti-disengagement sleeve 7 extends along the length direction of the positioning base 5. The anti-disengagement sleeve 7 is used to increase the stability when the connecting arm 6 and the positioning base 5 are combined. Since the anti-disengagement sleeve 7 reduces the lateral width presented by the guiding channel 51 and the semi-enclosing wall 51-b1, when the connecting arm 6 enters, it can be forced to undergo squeezing deformation to adapt to the size of the connecting arm 6. The anti-disengagement sleeve 7 after squeezing deformation can generate a resistance that affects the smooth movement of the connecting arm 6, and this resistance can also prevent the connecting arm 6 from moving under non-artificial operation, so as to stably stay within the positioning node 51-b, that is, the dust-proof baffle 4 can always be kept at the air inlet 11 and the air outlet 12.

[0025] The anti-disengagement sleeve 7 is made of rubber material. Its surface can generate a strong frictional resistance when contacting an object, and it also has the ability to be deformed by extrusion, so as to generate a resistance that prevents the connecting arm 6 from moving under non-artificial operation while adapting to the size of the connecting arm 6.

[0026] The connecting arm 6 is set as a columnar member, which includes a positioning part 61, two middle parts 62, and two connecting parts 63. The positioning part 61 is placed within the positioning node 51-b and its two ends extend outside the positioning base 5 and are connected to the corresponding middle parts 62. One end of the connecting part 63 is arranged on the dust-proof baffle 4 and the other end is connected to the middle part 62. Such a setting enables the connecting arm 6 to meet the requirements of being combined with the positioning base 5 and connected to the dust-proof baffle 4 at the same time. Because the connecting arm 6 and the positioning node 51-b are both arc-shaped structures, the connecting arm 6 can rotate within the positioning node 51-b, which enriches the ways of disassembling the dust-proof baffle 4. One disassembly method is that the two connecting arms 6 are simultaneously disengaged from the corresponding positioning bases 5. Another disassembly method is that one of the connecting arms 6 needs to be disengaged from the corresponding positioning base 5 as a prerequisite, so that after one of the connecting arms 6 is disengaged from the corresponding positioning base 5, the other connecting arm 6 can be disengaged from the corresponding positioning base 5.

[0027] The middle part 62 includes a vertical section 62-a, and longitudinal sections 62-b and transverse sections 62-c located at both ends of the vertical section 62-a. The longitudinal sections 62-b and the transverse sections 62-c are perpendicularly arranged. Such an arrangement is considered in view of the fact that the positioning seat 5 is longitudinally arranged while the connecting arm 6 is transversely arranged, so as to utilize the longitudinal sections 62-b and the transverse sections 62-c to meet this requirement. The vertical section 62-a is for meeting the height difference between the positioning node 51-b and the setting position of the connecting arm 6 on the dust-proof baffle 4.

[0028] Although the present utility model has been illustrated and described by referring to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details may be made within the scope of the claims.

Claims

1. A soft starter with a dustproof structure, comprising a housing (1), and a housing cover (2) covering a rear end opening of the housing (1), characterized in that: At least one fan (3) is arranged on the bottom surface of the top plate of the housing (1), and an air inlet (11) is formed on the top surface of the top plate, which matches the position of the fan (3) and allows external air to enter the housing (1) when the fan (3) is running; an air outlet (12) is formed on the bottom surface of the bottom plate of the housing (1) to allow air in the housing (1) to leave the housing (1); and protective coverings covering the air inlet (11) and the air outlet (12) are provided on the top surface of the top plate and the bottom surface of the bottom plate. A dust baffle (4) and positioning seats (5) symmetrically distributed on both sides of the dust baffle (4), wherein connecting arms (6) are provided at both ends of the dust baffle (4), and the positioning seats (5) are allowed to provide anti-detachment constraints on the connecting arms (6) when the dust baffle (4) provides dust protection for the air inlet (11) or the air outlet (12), and when the dust protection provided by the dust baffle (4) to the air inlet (11) or the air outlet (12) is released, the two connecting arms (6) are simultaneously detached from the corresponding positioning seats (5).

2. The soft starter with dustproof structure according to claim 1, characterized in that: The positioning seat (5) extends along the length direction of the top plate or the bottom plate, and an inwardly extending guide channel (51) is formed on the upper end surface thereof; the upper end of the guide channel (51) is provided with an upper opening (51-a) on the positioning seat (5), and the lower end is provided with a connected positioning node (51-b) on the positioning seat (5); the upper opening (51-a) is provided with the connecting arm (6) that can move along the guide channel (51) and reach the positioning node (51-b), and allows the dust baffle (4) to abut against the top plate or the bottom plate when the connecting arm (6) reaches the positioning node (51-b).

3. The soft starter with dustproof structure according to claim 2, characterized in that: The positioning node (51-b) comprises a semi-enclosing wall (51-b1) which is arranged on the positioning seat (5) and is in an arc shape, and a placement space (51-b2) which is defined within the semi-enclosing wall (51-b1) and allows the connecting arm (6) to be placed therein, and the semi-enclosing wall (51-b1) is in contact with the connecting arm (6) at least in a direction opposite to the guiding direction.

4. The soft starter with dustproof structure according to claim 3, characterized in that: An anti-drop sleeve (7) having a configuration consistent with the configuration of the combination of the two and used to reduce the transverse width is provided between the inner wall of the guide channel (51) and the semi-enclosing wall (51-b1), and the anti-drop sleeve (7) extends along the length direction of the positioning seat (5).

5. The soft starter with dustproof structure according to claim 4, characterized in that: The anti-drop sleeve (7) is made of rubber material.

6. The soft starter with dustproof structure according to claim 2, characterized in that: The connecting arm (6) is configured as a columnar component, comprising a positioning portion (61), two intermediate portions (62), and two connecting portions (63); the positioning portion (61) is disposed within the positioning node (51-b) and has two ends extending outside the positioning seat (5) to be connected to the corresponding intermediate portions (62); one end of the connecting portion (63) is disposed on the dust baffle (4) and the other end is connected to the intermediate portion (62).

7. The soft starter with dustproof structure according to claim 6, characterized in that: The middle portion (62) comprises a vertical section (62-a), and a longitudinal section (62-b) and a transverse section (62-c) located at both ends of the vertical section (62-a), wherein the longitudinal section (62-b) and the transverse section (62-c) are arranged vertically.

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