Improved structure of motor vector frequency converter box body

Abstract

The utility model relates to an improved structure of a box body of a vector frequency converter of a motor, which is characterized in that the improved structure comprises a bottom shell body and a face cover shell, the bottom shell body and the face cover shell are formed by stamping metal plates, and the face cover shell is covered on the bottom shell body and comprises a fixed face shell and a movable face shell. The fixed face shell is fixed to the first side portion of the upper opening of the bottom shell through a buckle or a screw, and the movable face shell is detachably connected to the second side portion of the upper opening of the bottom shell. The fixed surface shell is provided with a rectangular notch and a plastic groove-shaped fixed shell sleeved in the rectangular notch, and an operation panel box is embedded and fixed in the groove-shaped fixed shell; rectangular guide pieces higher than the upper end face of the upper opening of the bottom shell are fixedly arranged on the inner side faces of a front wall plate and a rear wall plate of the second side portion of the upper opening of the bottom shell, the rectangular guide pieces, the front wall plate of the bottom shell and the rear wall plate of the bottom shell form a step portion, and folded plates on the two sides of the movable face shell can be buckled on the step portion. A slot is formed in one side, facing the movable surface shell, of the fixed surface shell, and an insertion sheet which is tightly inserted into the slot is arranged on one side, facing the fixed surface shell, of the movable surface shell.

Description

Technical field:

[0002] The utility model relates to an improved structure of a motor vector frequency converter box. Background technology:

[0004] The applicant applied for the Chinese patent "Motor Vector Inverter Case Face Cover Shell Structure" announcement number CN213959979U in December 2020. The face cover shell includes a fixed face shell and a movable face shell; the movable face shell is provided with a lug at the end facing the fixed face shell, and a protruding pin is provided on the lug, and a pin hole cooperating with the protruding pin is provided at the end of the fixed face shell facing the movable face shell, so that the movable face shell can swing relative to the fixed face shell. The utility model discloses a method for installing and using a face cover shell of a motor vector inverter case. During installation, the lugs of the movable face cover are slightly spread outwards so that the convex pins on the lugs can be inserted into the pin holes, thereby allowing the movable face cover to swing relative to the fixed face cover. When it is necessary to view the interior of the case, the movable face cover can be flipped up for viewing. Although the patent does not require disassembly of the entire face cover shell, it is easy to use. However, since the face cover shell is made of plastic material, its compression and impact resistance are relatively weak. Furthermore, since the motor vector inverter case is used for a long time in conjunction with the motor vector inverter, the plastic material has the problem of becoming brittle after years of use. However, when stainless steel, steel and other materials are used, the structure of the patent is not applicable. Summary of the invention:

[0006] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an improved structure of a motor vector inverter case, the improved structure of the motor vector inverter case is reasonably designed and is conducive to increasing the service life.

[0007] The improved structure of the motor vector inverter box of the utility model is characterized in that it includes a bottom shell body and a face cover shell both of which are stamped from metal sheets, the face cover shell including a fixed face shell and a movable face shell, the fixed face shell being fixed to a first side portion of an opening on the bottom shell body by buckles or screws, and the movable face shell being detachably connected to a second side portion of the opening on the bottom shell body; the fixed face shell is provided with a rectangular notch and a plastic groove-shaped fixed shell sleeved in the rectangular notch, and the groove-shaped fixed shell has an inherent operation panel box embedded therein; rectangular guide pieces that are higher than the upper end surface of the opening on the bottom shell body are fixedly provided on the inner side surfaces of the front wall plate and the rear wall plate of the second side portion of the opening on the bottom shell body, the rectangular guide pieces form a stepped portion with the front wall plate and the rear wall plate of the bottom shell body, and the two side folding plates of the movable face shell can be buckled on the stepped portion, a slot is provided on a side of the fixed face shell facing the movable face shell, and a plug-in piece that is tightly plugged into the slot is provided on a side of the movable face shell facing the fixed face shell.

[0008] Preferably, the above-mentioned groove-shaped fixed shell includes a rectangular groove-shaped thin shell body and a rectangular flange arranged on the upper part of the groove-shaped thin shell body, the four sides of the groove-shaped thin shell body are embedded in the rectangular groove, the rectangular flange is supported on the periphery of the rectangular groove, and a wedge block is provided on the peripheral wall of the groove-shaped thin shell body, the large end of the wedge block is closer to the rectangular flange than the small end, and the distance between the large end of the wedge block and the rectangular flange is equal to the plate thickness of the fixed surface shell, so that the groove-shaped fixed shell can be clamped and fixed after being inserted into the rectangular groove.

[0009] Preferably, a limiting convex block is provided at the inner bottom of the groove-shaped thin shell, and a groove which cooperates with the limiting convex block for limiting is provided at the peripheral side of the operation panel box.

[0010] The utility model discloses an assembly and use method of the improved structure of a motor vector inverter box, wherein the groove-shaped fixed shell is pre-mounted and fixed on the rectangular groove of the fixed face shell, after the relevant circuit is connected with the bottom surface of the operation panel box, the relevant circuit is passed through the hole on the groove-shaped fixed shell, and the operation panel box is embedded in the groove-shaped fixed shell, and then the port of the relevant circuit is connected with the circuit board in the bottom shell body, and the fixed face shell is fixed to the bottom shell body, and finally the movable face shell is pushed horizontally from the second side portion of the bottom shell body to the first side portion after the folding plates on both sides of the movable face shell are aligned with the stepped portion, and the installation of the mask shell and the bottom shell body is realized after the inserting piece of the movable face shell is tightly inserted into the slot, and when it is necessary to simply check or repair the circuit in the bottom shell body, the movable face shell is pushed horizontally away from the bottom shell body.

[0011] The improved structural design of the motor vector inverter box of the utility model is reasonable, the fixed surface shell and the movable surface shell are simple to manufacture and have a long service life, and when simply checking or repairing the circuit in the bottom shell, it is only necessary to push the movable surface shell horizontally away from the bottom shell, which is convenient and quick to operate.

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Description of the drawings:

[0014] Figure 1 It is a front cross-sectional view of the utility model;

[0015] Figure 2 It is a partial exploded view of the utility model;

[0016] Figure 3 It is a cross-sectional view of the connection between the movable surface shell and the bottom shell of the utility model;

[0017] Figure 4 yes Figure 3 Exploded diagram. Specific implementation method:

[0019] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0020] The improved structure of the motor vector inverter case of the utility model includes a bottom shell 1 and a cover shell 2 both of which are stamped from metal sheets. The bottom shell 1 is composed of four side wall panels (including the front wall panel 8 and the rear wall panel 9 described later) and a bottom side panel punched from metal sheets. The four side wall panels are welded to the bottom side panels to form a rectangular slot shell.

[0021] The mask shell 2 includes a fixed face shell 3 and a movable face shell 4, the fixed face shell 3 is fixed to the first side portion of the opening on the bottom shell body 1 by buckles or screws, and the movable face shell 4 is detachably connected to the second side portion of the opening on the bottom shell body 1; the fixed face shell 3 is provided with a rectangular notch 5 (formed by stamping) and a plastic groove-shaped fixed shell 6 (produced separately) sleeved in the rectangular notch 5, and the groove-shaped fixed shell 6 has an embedded operation panel box 7 (the operation panel box 7 is made of plastic, and circuits are installed inside it, which is a prior art and will not be described here).

[0022] A rectangular guide piece 10 higher than the upper end surface of the bottom shell opening is fixedly provided on the inner side surfaces of the front wall plate 8 and the rear wall plate 9 of the second side portion of the bottom shell opening. The rectangular guide piece 10 is welded to the inner side surfaces of the front wall plate 8 and the rear wall plate 9.

[0023] The rectangular guide piece 10 forms a step portion 11 with the front wall plate and the rear wall plate of the bottom shell body, and the two side folding plates of the movable surface shell 4 can be buckled on the step portion. A slot 12 is provided on the side of the fixed surface shell facing the movable surface shell, and a plug 13 is provided on the side of the movable surface shell facing the fixed surface shell, which is tightly plugged into the slot 12 (the plug 13 and the slot 12 are interference fit), and the slot 12 is formed by connecting the fixed surface shell 3 body and an auxiliary mounting piece 19, that is, a spacing is formed between the auxiliary mounting piece 19 and the fixed surface shell 3 body, and the gap of the spacing is the slot 12. The specific auxiliary mounting piece 19 is a rectangular piece, and its three edges are welded to the fixed surface shell 3 body. The area of ​​the auxiliary mounting piece 19 except the welded edge is twisted to form a raised space. After the three edges of the auxiliary mounting piece 19 are welded to the fixed surface shell 3 body, the slot 12 is formed in the raised space.

[0024] The groove-shaped fixed shell 6 includes a rectangular groove-shaped thin shell 14 and a rectangular flange 15 provided on the upper part of the groove-shaped thin shell. The groove-shaped thin shell is embedded in the rectangular notch around the four sides, and the rectangular flange is supported on the periphery of the rectangular notch. A wedge block 16 is provided on the peripheral wall of the groove-shaped thin shell (the front of the wedge block 16 is rectangular, and the side of the wedge block 16 is triangular). The large end of the wedge block is closer to the rectangular flange 15 than the small end, and the distance between the large end of the wedge block and the rectangular flange is equal to the plate thickness of the fixed surface shell, so that the groove-shaped fixed shell is clamped and fixed after being inserted into the rectangular notch.

[0025] In order to achieve the fixation of the operation panel box 7 and the groove-shaped fixed shell 6, a limiting protrusion 17 is provided on the inner bottom of the above-mentioned groove-shaped thin shell 14, and a groove 18 is provided on the peripheral side of the operation panel box for limiting the position with the limiting protrusion. Since the operation panel box 7 and the groove-shaped fixed shell 6 are both made of plastic and have a certain plasticity, after the operation panel box 7 is pressed into the groove of the groove-shaped fixed shell 6, the limiting protrusion 17 cooperates with the groove 18 to achieve the fixation of the operation panel box 7 and the groove-shaped fixed shell 6.

[0026] The components and specific connection relationships in the bottom shell 1 are prior art and will not be described in detail here.

[0027] The utility model discloses an assembly and use method of the improved structure of a motor vector inverter box, wherein the groove-shaped fixed shell is pre-mounted and fixed on the rectangular groove of the fixed face shell, after the relevant circuit is connected with the bottom surface of the operation panel box, the relevant circuit is passed through the hole on the groove-shaped fixed shell, and the operation panel box is embedded in the groove-shaped fixed shell, and then the port of the relevant circuit is connected with the circuit board in the bottom shell body, and the fixed face shell is fixed to the bottom shell body, and finally the movable face shell is pushed horizontally from the second side portion of the bottom shell body to the first side portion after the folding plates on both sides of the movable face shell are aligned with the stepped portion, and the installation of the mask shell and the bottom shell body is realized after the inserting piece of the movable face shell is tightly inserted into the slot, and when it is necessary to simply check or repair the circuit in the bottom shell body, the movable face shell is pushed horizontally away from the bottom shell body.

[0028] The improved structural design of the motor vector inverter box of the utility model is reasonable, the fixed surface shell and the movable surface shell are simple to manufacture and have a long service life, and when simply checking or repairing the circuit in the bottom shell, it is only necessary to push the movable surface shell horizontally away from the bottom shell, which is convenient and quick to operate.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An improved structure of a motor vector inverter housing, characterized in that: The cover shell comprises a bottom shell body and a face mask shell which are both formed by stamping metal sheets, the face mask shell comprising a fixed face shell and a movable face shell, the fixed face shell being fixed to a first side portion of an opening on the bottom shell body by buckles or screws, and the movable face shell being detachably connected to a second side portion of the opening on the bottom shell body; the fixed face shell is provided with a rectangular notch and a plastic groove-shaped fixed shell which is sleeved in the rectangular notch, and the groove-shaped fixed shell has an operation panel box embedded in it; rectangular guide pieces which are higher than the upper end surface of the opening on the bottom shell body are fixedly provided on the inner side surfaces of the front wall plate and the rear wall plate on the second side portion of the opening on the bottom shell body, the rectangular guide pieces form a step portion with the front wall plate and the rear wall plate of the bottom shell body, and the folding plates on both sides of the movable face shell can be buckled on the step portion, a slot is provided on the side of the fixed face shell facing the movable face shell, and a plug-in piece which is tightly plugged into the slot is provided on the side of the movable face shell facing the fixed face shell.

2. The improved structure of the motor vector inverter housing according to claim 1 is characterized in that: The groove-shaped fixed shell includes a rectangular groove-shaped thin shell body and a rectangular flange arranged on the upper part of the groove-shaped thin shell body. The groove-shaped thin shell body is embedded in the rectangular groove around the four sides, and the rectangular flange is supported on the peripheral edge of the rectangular groove. A wedge block is arranged on the peripheral wall of the groove-shaped thin shell body. The large end of the wedge block is closer to the rectangular flange than the small end, and the distance between the large end of the wedge block and the rectangular flange is equal to the plate thickness of the fixed surface shell, so that the groove-shaped fixed shell can be clamped and fixed after being inserted into the rectangular groove.

3. The improved structure of the motor vector inverter housing according to claim 2 is characterized in that: The inner bottom of the groove-shaped thin shell is provided with a limiting convex block, and the peripheral side of the operation panel box is provided with a groove which cooperates with the limiting convex block for limiting position.

Images