CN201113236Y - distribution box - Google Patents

Abstract

The utility model provides a power distribution box, comprising: a box body, a mounting plate arranged in the box body, and a power distribution appliance (3) installed on the mounting plate, and is characterized in that the mounting plate (2) A sliding structure (22) is provided, and a nut part (21) is slidably arranged on the sliding structure (22), for locking the fastening screw (33) of the power distribution device (3) and the nut part (21 ) thread fit. In addition, the distribution box includes a baffle plate (4), which is locked on the box body with an adjustable distance relative to the installation plate (2), and the opening of the baffle plate is a combination hole. The distribution box of the utility model can realize the compatible installation of plastic case circuit breakers of different specifications, improve production efficiency, be easy to maintain, and reduce costs.

Description

distribution box

technical field

The utility model relates to a distribution device, in particular to a distribution box.

Background technique

The distribution box plays the role of distributing the circuit in the power supply line and is a common form of power distribution. A common distribution box consists of a box body, a mounting plate fixed on the box body to install a molded case circuit breaker (or contactor, relay and other power distribution appliances), and a baffle that covers the power distribution appliance for protection, etc. Composition, molded case circuit breakers with the same electrical specifications in the distribution box have different dimensions and installation dimensions due to different manufacturers, resulting in different positions of the fixing holes on the mounting plate, different opening sizes of the circuit breaker on the baffle, and different fixed heights of the baffle. Different locations, and molded case circuit breakers of different specifications from the same manufacturer also have the above-mentioned problems of different sizes. The current practice is to design corresponding mounting plates and baffles for different molded case circuit breakers, which have disadvantages such as poor structural versatility, high cost, low production efficiency, and poor maintainability.

Utility model content

The technical problem to be solved by the utility model is to provide a power distribution box, which can be compatible with power distribution appliances of different specifications.

In order to solve the above problems, the utility model provides a power distribution box, including: a box body and a mounting plate arranged in the box body, and a power distribution device, the power distribution device is connected to the mounting plate; it is characterized in that the installation A sliding structure is provided on the board, and a nut part is slidably arranged on the sliding structure, and a fastening screw for locking the power distribution device is threadedly engaged with the nut part. In this way, the installation hole positions of different power distribution appliances, preferably circuit breakers, can be adjusted arbitrarily by sliding, so as to play the role of compatible fixing of different circuit breakers.

The distribution box also includes a baffle plate covering the power distribution apparatus, preferably a circuit breaker, and the baffle plate is locked with an adjustable distance relative to the installation plate by an adjustment structure. The adjustment structure includes an adjustment screw and an adjustment threaded hole arranged on the baffle bracket fixed on the box body, the adjustment screw matches with the adjustment threaded hole, and at the same time the screw head is pressed against the baffle to drive the baffle to move . The adjustment structure also includes a fixing screw and a fixing threaded hole arranged on the baffle, the fixing screw passes through the fixing threaded hole and the tail of the screw presses against the baffle bracket to lock the baffle in the adjusted position. Location. In this way, the height of the baffle can be adjusted through the cooperation of the adjusting screw and the positioning screw to meet the different height requirements of molded case circuit breakers of different specifications.

The baffle is provided with a combination hole composed of a plurality of openings. The openings of different circuit breakers can be formed by combining different openings. In this way, different requirements for opening holes of different molded case circuit breakers can be met. Preferably, the combination hole on the baffle is a knock-out hole.

According to a preferred design solution, a plurality of sliding structures are included, and the sliding structures are arranged obliquely along directions away from each other. The sliding structure is a through slot. The nut piece is a cylindrical piece provided with a concave sliding portion along the circumference, and the diameters of both ends of the nut piece are designed to be larger than the width of the through slot. The two ends play the role of guiding and fixing to prevent the nut from falling off.

In addition, a locking threaded hole is provided along the axial direction of the nut, and the circuit breaker cooperates with the locking threaded hole of the nut through a fastening screw. position to lock the circuit breaker.

Since the position of the nut part of the present invention can be adjusted to correspond to the installation position of the circuit breaker, the installation hole positions of different circuit breakers can be adjusted arbitrarily. Since the distance between the baffle plate and the mounting plate is adjustable, the baffle plate can be adjusted arbitrarily along the height direction of the circuit breaker and fixed at different height positions to meet the height dimensions of different molded case circuit breakers. In addition, since the openings on the baffle are combined holes, they can be combined into openings for the operating parts of different circuit breakers to protrude. Therefore, the utility model can realize the compatible installation of circuit breakers of different specifications, improve production efficiency, facilitate maintenance and reduce cost.

It should be understood that both the above general description and the following detailed description are enumerative and explanatory, and the purpose is to provide further explanation of the claimed utility model.

Description of drawings

Specific embodiments of the present utility model are described below in conjunction with accompanying drawings. But the invention can be embodied in many different ways as defined and covered by the claims. The same components are denoted by the same reference numerals in the drawings.

Figure 1 is a partial cross-sectional view of the distribution box of the present invention, in which the circuit breaker is locked on the mounting plate, the baffle is connected to the baffle bracket, and the operating part of the circuit breaker protrudes from the baffle;

Fig. 2 is a partially enlarged cross-sectional view of the installation of the circuit breaker, wherein the circuit breaker is locked with the mounting plate by a nut;

Fig. 3 is a sliding track diagram of a nut part;

Fig. 4 is the schematic diagram of the knock-out hole arranged on the baffle;

Fig. 5 is an exploded view of the distribution box of the utility model;

Fig. 6 is an exploded view of the distribution box of the utility model, wherein an insulating plate is arranged between the circuit breaker and the mounting plate;

Fig. 7 is another partial enlarged cross-sectional view of the connection between the mounting plate and the circuit breaker of the distribution box of the present invention, wherein the fastening screws cooperate with the nuts to lock the mounting plate and the circuit breaker.

Detailed ways

The utility model is described in detail below with reference to accompanying drawing.

Figure 1 schematically shows the internal structure of the distribution box of the utility model. As shown in Figure 1, the distribution box of the present utility model includes: a box body 1, a mounting plate 2, a circuit breaker 3 (also can be other power distribution appliances), a baffle plate 4, and a box body 1 for The baffle support 5 etc. of the baffle 4 are connected. Wherein, the mounting plate 2 and the baffle bracket 5 are respectively fixed on the box body 1, the bottom of the circuit breaker 3 is locked on the mounting plate 2 through the nut 21, and its operating part 31 passes through the opening 44 provided on the baffle 4 (such as 4) stretches out; the baffle plate 4 is connected with the baffle plate bracket 5 by adjusting screws 43 and fixing screws 42.

From FIG. 1 , it can also be seen that the fixing threaded hole 41 and the adjusting threaded hole 51 are respectively arranged on the cylinder protruding from the baffle 4 and the baffle bracket 5 . The fixing screw 41 cooperates with the fixing threaded hole 41 and can be pressed against the baffle bracket 5, and the adjusting screw 43 passes through the through hole on the baffle 4 and cooperates with the adjusting threaded hole 51 arranged on the baffle bracket. The adjusting screw 51 is arranged adjacent to the fixing screw 41 .

FIG. 2 and FIG. 3 respectively show the schematic diagrams of the sliding fit between the nut piece 21 and the mounting plate 2 and the locking of the circuit breaker 3 and the mounting plate 2 . It can be seen from the figure that the mounting plate 2 is provided with an oblong through-slot hole (sliding structure) 22 for the nut member 21 to slide. Preferably, as shown in FIG. 3 , the plurality of through slots 22 are arranged obliquely along the direction away from each other, so as to adapt to the situation that the distance between the fixing holes on different circuit breakers may be different. The nut piece 21 is a cylindrical piece provided with a concave sliding portion 23 (shown in FIG. 7 ) along the circumference, and the diameters of both ends of the nut piece 21 are designed to be greater than the width of the through slot 22, thereby guiding the locking piece And prevent the lock from falling off. A threaded locking hole 222 extends through the nut member 21 in the axial direction. The concave sliding portion 23 of the nut member 21 is clamped in the through slot 22 to form a sliding fit, and the two ends of the nut member 21 can respectively press against two sides of the mounting plate 2 . Therefore, the nut piece 21 is clamped and slid in the through slot 22 without detaching from the mounting plate 2 and can be positioned at different mounting positions (mounting hole positions) of the circuit breaker 3 . That is, the nut piece 21 can slide to the installation position corresponding to the circuit breaker 3 , and the circuit breaker 3 is locked on the installation plate 2 through the cooperation of the fastening screw 33 and the locking threaded hole opened along the axial direction of the nut piece 21 .

In the present invention, the other end 221 of the nut part 21 that fits with the through slot 22 can be formed, for example, by riveting and flanging a stepped cylindrical part. That is to say, before the other end 221 is formed, the nut member 21 is a stepped cylinder including a small diameter section and a large diameter section, the size of the large diameter section is designed to be greater than the width of the through slot 22, and the size of the small diameter section It is designed to be slidably matched with the through slot 22 , and the small diameter section protruding from the through slot 22 is riveted to form another flange larger than the width of the through slot 22 , that is, the other end 221 . Thus, the concave sliding portion 23 is formed between the large diameter section at one end and the small diameter section at the other end 221 , thereby forming the nut member 21 slidably connected with the through slot 22 . Of course, the nut piece 21 can also be directly made by machining processes such as machining.

It can also be seen from FIG. 3 that an insulating plate 32 is provided between the mounting plate 2 and the circuit breaker 3 .

Fig. 4 shows the openings provided on the baffle plate 4, the openings are combination holes 44, and the openings constituting each combination hole in this embodiment are knock-out holes. By combining different knock-out holes 44 , it is possible to form openings through which the operating parts 31 of different circuit breakers 3 protrude. Each knock-out hole can be a hole closed by different closures, and can be opened when needed for the operation part 31 to protrude.

5 and 6 are installation exploded views of the distribution box of the present invention, and FIG. 7 shows a partial schematic diagram of locking the mounting plate 2 and the circuit breaker 3 through the cooperation of the fastening screws 33 and the nuts 21 . Since the nut piece 21 slidably clamped in the through slot 22 of the installation plate 2 has been formed by the riveting and flanging process before installation, it can be known from Fig. 5, Fig. 6 and Fig. 7 that when the circuit breaker 3 is installed, it should be First lock the circuit breaker 3 and the mounting plate 2, then form the opening 44, and finally connect the baffle 4 to the baffle bracket 5, and adjust the distance between them accordingly so that the baffle 4 contacts the circuit breaker 3 and at the same time makes the operating part of the circuit breaker 31 protrudes from the opening 44.

Specifically, when locking the circuit breaker 3 and the mounting plate 2, first fix the mounting plate 2 in the box body 1, and then make the nut 21 slide in the through slot 22 until its position is consistent with that of the circuit breaker 3 to be installed. Corresponding to the installation position, the insulating plate 32 is arranged between the installation plate 2 and the circuit breaker 3 corresponding to the installation position of the circuit breaker 3, and the fastening screw 33 is used to pass through the installation hole of the circuit breaker 3 and finally connect with the threaded hole of the nut member 21 With tightening, due to the force generated by tightening, the large-diameter section of the nut piece 21 is pressed against the mounting plate 2, so that the fastening screw 33 presses the circuit breaker 3 toward the direction of the nut piece 21, thus locking the circuit breaker 3 on mounting plate 2. It should be noted that the diameter of the through hole 34 (shown in FIG. 7 ) for the fastening screw 33 to pass through on the insulating plate 32 is greater than the maximum diameter of the flange of the nut member 21, and the insulating plate 32 has a diameter larger than the flange of the nut member 21. The height of the axial dimension of the side provides accommodating space for the nut piece 21.

When forming the opening, it is sufficient to directly combine different knock-out holes 44 .

When connecting the baffle 4 with the baffle bracket 5 and adjusting the spacing, first fix the baffle bracket 5 on the box body 1, then place the baffle 4 on the circuit breaker 3 and make the operating part 31 protrude from the opening , the adjusting screw 43 drives the baffle 4 to move to an appropriate height corresponding to the height of the circuit breaker 3 , and the fixing screw 42 is used to fix the baffle 4 at the adjusted position. When the fixing screw 42 is loosened and the adjusting screw 43 is further tightened, the distance between the small baffle 4 and the baffle bracket 5 can be adjusted and the baffle 4 is fixed relative to the baffle bracket 5 . Therefore, the cooperation of the adjusting screw 43 and the fixing screw 42 can realize the adjustable distance between the baffle plate 4 and the mounting plate 2 and can lock the baffle plate 4 at an appropriate adjustment position away from the mounting plate 2 . The adjustment of the distance between the baffle 4 and the mounting plate 2 refers to the adjustment of the distance between the baffle 4 and the circuit breaker 3 .

Herein, since the mounting plate 2 and the baffle bracket 5 are both fixed to the box body 1 , adjusting the distance between the baffle 4 and the baffle bracket 5 is equal to adjusting the distance between the baffle 4 and the mounting plate 2 .

The above embodiments are only used to illustrate the technical solution of the utility model rather than limit it, although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the utility model can be Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the utility model shall be covered by the claims of the utility model.

Claims (9)

1. A distribution box, comprising: a box body (1) and a mounting plate (2) arranged in the box body (1), and a power distribution appliance (3) installed on the mounting plate (2), It is characterized in that a sliding structure (22) is provided on the mounting plate (2), and a nut member (21) is slidably provided on the sliding structure (2), which is used to lock the tightness of the power distribution device (3). Fastening screw (33) is threadedly engaged with described nut piece (21). 2. The distribution box according to claim 1, further comprising a baffle (4) covering the power distribution appliance (3), and the baffle (4) uses an adjustment structure relative to the mounting plate (2) The spacing is adjustable and locked. 3. The distribution box according to claim 2, characterized in that, the adjustment structure includes an adjustment screw (43), and an adjustment threaded hole arranged on the baffle bracket (5) fixed to the box body (1) (51) match, and the screw head is pressed on described baffle plate (4) to drive baffle plate (4) to move simultaneously; Fixing screw (42), is arranged on the fixed threaded hole (41) on the baffle plate (4) phase Cooperate, the tail of the screw is pressed against the baffle bracket (5). 4. The distribution box according to claim 2 or 3, characterized in that, the baffle plate (4) is provided with a combination hole (44) consisting of a plurality of openings. 5. The distribution box according to claim 4, wherein each opening of the combination hole (44) on the baffle (4) is a knock-out hole. 6. The distribution box according to claim 5, characterized in that it includes a plurality of sliding structures (22), and the sliding structures (22) are arranged obliquely along directions away from each other. 7. The distribution box according to claim 6, wherein the sliding structure (22) is a through slot. 8. The distribution box according to claim 7, characterized in that, the nut piece (21) is a cylindrical piece provided with a concave sliding portion (23) along the circumferential direction, and the two sides of the nut piece (21) The diameter of the end is designed to be larger than the width of the through slot (22). 9. The distribution box according to claim 8, characterized in that, a locking threaded hole (222) is provided along the axial direction of the nut member (21), and the fastening screw (33) and the nut member (21) Lock threaded hole (222) fits.

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