Over-current circuit protection device

Abstract

The utility model discloses an overcurrent circuit protection device in the circuit protection field, comprising a base plate, a screw hole, a mounting box, a box cover and a connecting mechanism, the screw hole penetrates through the middle parts of the left and right sides of the top of the base plate, the mounting box is fixedly connected to the middle part of the top of the base plate, and the box cover is fixedly connected to the top of the base plate. The box cover is fixedly connected to the top of the mounting box through the connecting mechanism, and lug plates are fixedly connected to the middles of the tops of the left side and the right side of the mounting box in a penetrating mode. According to the overcurrent circuit protection device, a rotating button is rotated to drive a threaded rod to rotate, and the position of a sliding block is limited through cooperation of a limiting block and a limiting groove; when the threaded rod rotates, the sliding block drives the left insulating column to move, the distance between the left insulating column and the right insulating column is adjusted, and therefore the distance between the connecting terminals is adjusted, adjustment can be conveniently conducted according to the length of the fuse tube, the device is convenient to adapt to various fuse tubes, replacement of the device is avoided, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection, in particular to an overcurrent circuit protection device. Background Art

[0002] During the use of power equipment, it is often the case that the voltage is too high and damages the power equipment. In order to prevent damage to the power equipment, an overcurrent protection device is generally provided. The overcurrent protection device is generally a fuse. Fuses are often used as a protection device to protect electronic components or electrical equipment in circuits. When the instantaneous current in the circuit exceeds the predetermined current rating, the fuse structure in the fuse will be melted by the high temperature due to the heat generated by the excessive current, thereby forming a short circuit, so that the overcurrent no longer flows into the circuit, thereby protecting the circuit and electrical equipment from damage.

[0003] The current fuse is a fuse tube inserted into the wiring terminals at both ends, but the existing fuse can only install fuse tubes of the same specifications. When installing fuse tubes of different specifications, the entire device needs to be replaced, which makes the applicability of the device low and causes inconvenience in use. For this reason, we propose an overcurrent circuit protection device. Utility Model Content

[0004] The purpose of the utility model is to provide an overcurrent circuit protection device to solve the problem proposed in the above background technology that the current fuse can only install fuse tubes of the same specification. When installing fuse tubes of different specifications, the entire device needs to be replaced, which makes the applicability of the device low and causes inconvenience in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an overcurrent circuit protection device, comprising a bottom plate, a screw hole, a mounting box, a box cover and a connecting mechanism, wherein the screw hole penetrates through the middle of the left and right sides of the top of the bottom plate, the mounting box is fixedly connected to the middle of the top of the bottom plate, the box cover is fixedly connected to the top of the mounting box through the connecting mechanism, the middle of the top of the left and right sides of the mounting box penetrates and is fixedly connected with a wiring piece, the inside of the mounting box is connected with an adjustment mechanism, and the adjustment mechanism comprises a slide groove, a threaded rod, a rotating knob, A slider, a limit block, a limit groove, an insulating column and a connecting terminal. A slide groove is provided on the left side of the bottom of the inner cavity of the installation box, a threaded rod is passed through the middle part between the left and right sides of the slide groove and is rotatably connected, a rotating button is fixedly connected to the left end of the threaded rod, a slider is screwed on the outer side of the threaded rod through a thread, the middle part of the front and rear sides of the slider is fixedly connected to the limit block, the middle part of the front and rear sides of the slide groove is provided with a limit groove, the top middle part of the slider and the right part of the bottom of the inner cavity of the installation box are fixedly connected with insulating columns, and the top end of the insulating column is fixedly connected with a connecting terminal.

[0006] As a further description of the above technical solution:

[0007] The connecting piece is electrically connected to the connecting terminal through a wire.

[0008] As a further description of the above technical solution:

[0009] The outer side of the rotating knob is provided with anti-slip grooves.

[0010] As a further description of the above technical solution:

[0011] The limiting block is slidably connected to the inside of the limiting groove, and the outer side wall of the limiting block is in contact with the inner side wall of the limiting groove.

[0012] As a further description of the above technical solution:

[0013] The connecting mechanism includes a connecting block, a fixing hole, a connecting box, a fixing rod, a pull plate and a connecting spring. The middle of the left and right sides of the box cover are fixedly connected with a connecting block, and a fixing hole is opened through the middle of the right bottom of the connecting block. The middle of the top of the left and right sides of the installation box are fixedly connected with a connecting box, and the middle of the left side of the inner cavity of the left connecting box and the middle of the right side of the inner cavity of the right connecting box are both slidably connected with fixing rods, and the ends of the fixing rods on the left and right parts that are far away from each other are fixedly connected with pull plates, and the outer side of the fixing rod is sleeved with a connecting spring.

[0014] As a further description of the above technical solution:

[0015] Two ends of the connection spring are fixedly connected to the connection box and the opposite sides of the pull plate respectively.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The overcurrent circuit protection device drives the threaded rod to rotate by rotating the rotating knob, and limits the position of the slider by the cooperation of the limit block and the limit groove. When the threaded rod rotates, the slider drives the insulating column on the left to move, and the distance between the left and right insulating columns is adjusted, thereby adjusting the distance between the connecting terminals, which is convenient for adjustment according to the length of the fuse tube, and is convenient for application of various fuse tubes, avoiding replacement of the device, and improving the applicability of the device.

[0018] 2. The overcurrent circuit protection device drives the fixing rod to move by pulling the pull plate, so that the fixing rod moves out of the fixing hole, releases the fixation of the connecting block, pulls the box cover to open the box cover, thereby facilitating the replacement of the fuse tube, improving the convenience of replacement and the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall structure of an overcurrent circuit protection device proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of a connecting piece of an overcurrent circuit protection device proposed by the utility model;

[0021] Figure 3 A schematic diagram of the structure of an adjustment mechanism of an overcurrent circuit protection device proposed by the utility model;

[0022] Figure 4 The present invention is a schematic diagram of the connection mechanism structure of an overcurrent circuit protection device proposed by the present invention.

[0023] In the figure: 100, bottom plate; 200, screw hole; 300, installation box; 400, box cover; 500, adjustment mechanism; 510, slide groove; 520, threaded rod; 530, rotating knob; 540, slider; 550, limit block; 560, limit groove; 570, insulating column; 580, connecting terminal; 600, connecting mechanism; 610, connecting block; 620, fixing hole; 630, connecting box; 640, fixing rod; 650, pull plate; 660, connecting spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides an overcurrent circuit protection device, which is easy to adjust according to the length of the fuse tube, is easy to use for a variety of fuse tubes, avoids the need to replace the device, and improves the applicability of the device. Please refer to Figure 1-4 , including a base plate 100, screw holes 200, a mounting box 300, a box cover 400 and a connecting mechanism 600;

[0028] Please refer again Figure 1 , the bottom plate 100 is used to open the mounting screw hole 200, the mounting box 300, the box cover 400 and the connecting mechanism 600;

[0029] Please refer again Figure 1 The screw holes 200 are opened through the middle of the left and right sides of the top of the bottom plate 100, so that the bottom plate 100 can be fixed with screws. The installation box 300 is fixedly connected to the middle of the top of the bottom plate 100. The box cover 400 is fixedly connected to the top of the installation box 300 through the connecting mechanism 600. The middle of the top of the left and right sides of the installation box 300 is fixedly connected with a wiring piece 310 for wiring. The inside of the installation box 300 is connected with an adjusting mechanism 500.

[0030] Please refer again Figure 3 , the adjustment mechanism 500 includes a slide groove 510, a threaded rod 520, a rotating knob 530, a slider 540, a limit block 550, a limit groove 560, an insulating column 570 and a connecting terminal 580;

[0031] Please refer again Figure 3 A slide groove 510 is provided on the left side of the bottom of the inner cavity of the installation box 300, and a threaded rod 520 is rotatably connected to the middle part between the left and right sides of the slide groove 510, and a rotating button 530 is fixedly connected to the left end of the threaded rod 520, and a slider 540 is screwed on the outer side of the threaded rod 520 through a thread, and a limiting block 550 is fixedly connected to the middle part of the front and rear sides of the slider 540, and a limiting groove 560 is provided in the middle part of the front and rear sides of the slide groove 510, and an insulating column 570 is fixedly connected to the top middle part of the slider 540 and the right part of the bottom of the inner cavity of the installation box 300, and a connecting terminal 580 is fixedly connected to the top of the insulating column 570.

[0032] To summarize, by rotating the rotating knob 530, the threaded rod 520 is driven to rotate, and the position of the slider 540 is limited by the cooperation of the limit block 550 and the limit groove 560. When the threaded rod 520 rotates, the slider 540 drives the insulating column 570 on the left to move, and the distance between the left and right insulating columns 570 is adjusted, thereby adjusting the distance between the connecting terminals 580, so as to facilitate adjustment according to the length of the fuse tube, facilitate application of a variety of fuse tubes, avoid replacement of the device, and improve the applicability of the device.

[0033] Please refer again Figure 2 , the connecting piece 310 is electrically connected to the connecting terminal 580 through a wire.

[0034] Please refer again Figure 2 The outer side of the rotating button 530 is provided with anti-slip grooves.

[0035] Please refer again Figure 3 The limiting block 550 is slidably connected to the inside of the limiting groove 560 , and the outer wall of the limiting block 550 is in contact with the inner wall of the limiting groove 560 .

[0036] Please refer again Figure 4 The connecting mechanism 600 includes a connecting block 610, a fixing hole 620, a connecting box 630, a fixing rod 640, a pull plate 650 and a connecting spring 660. The connecting block 610 is fixedly connected to the middle of the left and right sides of the box cover 400, and a fixing hole 620 is penetrated in the middle of the right bottom of the connecting block 610. The connecting box 630 is fixedly connected to the middle of the top of the left and right sides of the installation box 300. The fixing rod 640 is penetrated and slidably connected to the middle of the left side of the inner cavity of the left connecting box 630 and the middle of the right side of the inner cavity of the right connecting box 630. The pull plate 650 is fixedly connected to the ends of the left and right fixing rods 640 that are far away from each other, and the connecting spring 660 is sleeved on the outer side of the fixing rod 640.

[0037] Please refer again Figure 4 The two ends of the connection spring 660 are fixedly connected to the opposite sides of the connection box 630 and the pull plate 650 respectively.

[0038] In summary, by pulling the pull plate 650, the fixing rod 640 is driven to move, so that the fixing rod 640 moves out of the fixing hole 620, the fixation of the connecting block 610 is released, and the box cover 400 is pulled to open the box cover 400, thereby facilitating the replacement of the fuse tube, improving the convenience of replacement, and improving the practicality of the device.

[0039] In specific use, when installing, the technical personnel in this field first fix the bottom plate 100, then pull the pull plate 650 to drive the fixing rod 640 to move, so that the fixing rod 640 moves out of the fixing hole 620, releases the fixation of the connecting block 610, pulls the box cover 400, opens the box cover 400, rotates the rotation button 530, drives the threaded rod 520 to rotate, and uses the cooperation of the limit block 550 and the limit groove 560 to limit the position of the slider 540. When the threaded rod 520 rotates, the slider 540 drives Move the insulating column 570 on the left, adjust the distance between the left and right insulating columns 570, and thus adjust the distance between the connecting terminals 580, fix the fuse tube on the connecting terminal 580, then pull the pull plate 650 again, pull the fixing rod 640 out of the connecting box 630, and stretch the connecting spring 660 at the same time, then embed the connecting block 610 into the connecting box 630, loosen the fixing rod 640, and reset the connecting spring 660 so that the fixing rod 640 is embedded in the fixing hole 620, fix the box cover 400, and complete the installation.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An overcurrent circuit protection device, characterized in that: The utility model comprises a bottom plate (100), a screw hole (200), an installation box (300), a box cover (400) and a connecting mechanism (600), wherein the screw hole (200) is opened through the middle of the left and right sides of the top of the bottom plate (100), the installation box (300) is fixedly connected to the middle of the top of the bottom plate (100), the box cover (400) is fixedly connected to the top of the installation box (300) through the connecting mechanism (600), the middle of the top of the left and right sides of the installation box (300) is fixedly connected with a wiring piece (310), the inside of the installation box (300) is connected with an adjustment mechanism (500), and the adjustment mechanism (500) comprises a slide groove (510), a threaded rod (520), a rotating knob (530), a slider (540), a limit block (550), a limit groove (560), and a plurality of limit blocks (570). 60), an insulating column (570) and a connecting terminal (580), a slide groove (510) is provided on the left side of the bottom of the inner cavity of the installation box (300), a threaded rod (520) is rotatably connected to the middle part between the left and right sides of the slide groove (510), a rotating button (530) is fixedly connected to the left end of the threaded rod (520), a slider (540) is screwed on the outer side of the threaded rod (520) by a thread, a limiting block (550) is fixedly connected to the middle part of the front and rear sides of the slider (540), a limiting groove (560) is provided in the middle part of the front and rear sides of the slide groove (510), an insulating column (570) is fixedly connected to the middle part of the top of the slider (540) and the right part of the bottom of the inner cavity of the installation box (300), and a connecting terminal (580) is fixedly connected to the top of the insulating column (570).

2. An overcurrent circuit protection device according to claim 1, characterized in that: The connecting piece (310) is electrically connected to the connecting terminal (580) via a wire.

3. An overcurrent circuit protection device according to claim 1, characterized in that: The outer side of the rotating knob (530) is provided with anti-slip grooves.

4. An overcurrent circuit protection device according to claim 1, characterized in that: The limiting block (550) is slidably connected to the inside of the limiting groove (560), and the outer side wall of the limiting block (550) is in contact with the inner side wall of the limiting groove (560).

5. The overcurrent circuit protection device according to claim 1, characterized in that: The connecting mechanism (600) comprises a connecting block (610), a fixing hole (620), a connecting box (630), a fixing rod (640), a pull plate (650) and a connecting spring (660); the connecting block (610) is fixedly connected to the middle of the left and right sides of the box cover (400); a fixing hole (620) is penetrated in the middle of the right bottom of the connecting block (610); the connecting box (630) is fixedly connected to the middle of the top of the left and right sides of the installation box (300); the fixing rod (640) is penetrated and slidably connected to the middle of the left side of the inner cavity of the left connecting box (630) and the middle of the right side of the inner cavity of the right connecting box (630); the pull plate (650) is fixedly connected to the ends of the fixing rods (640) on the left and right sides that are away from each other; and the connecting spring (660) is sleeved on the outer side of the fixing rod (640).

6. An overcurrent circuit protection device according to claim 5, characterized in that: Two ends of the connection spring (660) are respectively fixedly connected to the connection box (630) and the opposite sides of the pull plate (650).

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