Resettable fuse device

Abstract

The utility model discloses a resettable fuse device, and particularly relates to the technical field of resettable fuses, which comprises a bottom protective sleeve, a top protective sleeve is arranged on the outer side of the upper end of the bottom protective sleeve, a limiting support block is arranged on the end face of the lower side of the bottom protective sleeve, and a concave mounting groove is formed in one side of the upper end of the bottom protective sleeve. A convex limiting protruding block is arranged on the outer end face of the concave mounting groove, a limiting clamping plate is arranged on one side of the lower end of the top protection sleeve, and a concave limiting clamping groove is formed in the inner side end face of the limiting clamping plate. When the self-recovery fuse is actually used, the self-recovery fuse main body can be conveniently installed under the corresponding arrangement state of the concave groove, the strip-shaped limiting groove, the self-recovery fuse main body, the fuse pins and the beeswax sealing block, and meanwhile the self-recovery fuse main body can be conveniently installed under the adaptive state of the concave limiting clamping groove and the convex limiting convex block. And the closing stability of the bottom protection sleeve and the top protection sleeve can be effectively improved, so that the resettable fuse main body can be conveniently protected.

Description

Technical Field

[0001] The utility model relates to the technical field of resettable fuses, and more specifically, to a resettable fuse device. Background Art

[0002] A PPTC (presumably a resettable fuse) is an overcurrent protection component. It's made by mixing conductive particles with a high-molecular-weight organic polymer under high-voltage, high-temperature, and vulcanization conditions, then using a specialized process. Traditional fuses only provide overcurrent protection once, requiring replacement if they burn out. However, resettable fuses offer both overcurrent and overheat protection, as well as automatic recovery, meeting the high-temperature demands of the electric motor market.

[0003] At present, in order to avoid damage to the pins of the resettable fuse during transportation and handling of the resettable fuse, the prior art announcement No. CN210925935U discloses a resettable fuse device, wherein the first pin and the second pin respectively include two parts, a pin and a plug pin, the pin is plugged into the bottom of the pin, a socket is provided at the bottom of the pin, a contact pin is installed at the top of the inner cavity of the socket, and a contact hole is provided at the top of the pin, and the contact pin is plugged into the inner cavity of the contact hole, so that the connection is made, and then the fastening sleeve is put on the outer side of the bottom end of the pin. Because the inner cavity wall of the fastening sleeve and the outer wall of the bottom end of the pin are adhered with a soft rubber layer, the fastening sleeve can be squeezed against the outer side of the pin by force, and the elastic extrusion of the rubber increases the anti-slip property, making the fastening sleeve more firmly installed. Fixed blocks are provided on both sides of the top of the pin, so that the fixing blocks are opened on both sides of the inner cavity bottom of the fastening sleeve.

[0004] When the above device is in use, the transparent plastic protective plate can be easily broken off to both sides to prevent it from getting in the way when the pins are plugged in. The provision of the protective plate has a protective effect on the pins of the fuse before use, reducing the damage rate in the transportation package. However, when the above device is in use, the upper end of the resettable fuse is also prone to wear and damage, which makes it inconvenient to protect and access the resettable fuse. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a resettable fuse device. The technical problem to be solved by the present invention is: how to conveniently protect the resettable fuse and make it easy to use.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a resettable fuse device, comprising a bottom protective sleeve, a top protective sleeve provided on the outer side of the upper end of the bottom protective sleeve, a limit support block provided on the lower end surface of the bottom protective sleeve, a concave mounting groove provided on one side of the upper end of the bottom protective sleeve, a convex limit bump provided on the outer end surface of the concave mounting groove, and a limit clamping plate provided on one side of the lower end of the top protective sleeve;

[0007] The inner end surface of the limit card plate is provided with a concave limit card groove, the upper end of the bottom protective cover is provided with a strip limit groove, the upper end of the bottom protective cover is provided with a resettable fuse body, the lower end surface of the resettable fuse body is provided with a fuse pin, and the outer end surface of the fuse pin is provided with a beeswax seal.

[0008] In a preferred embodiment, a rotating connector is provided at the connection between the bottom protective cover and the top protective cover, and a concave groove is provided on the outer side of one end of the bottom protective cover;

[0009] The inner end surface of the bottom protective cover is provided with a supporting slide on the upper side of the limiting support block, and a convex pulling block is provided on one side of the lower end of the supporting slide.

[0010] In a preferred embodiment, the number of the concave groove and the strip-shaped limiting groove is two, and they are arranged in a mirror image state on both sides of the vertical central axis of the bottom protective cover in the right viewing direction;

[0011] The concave groove and the strip-shaped limiting groove are in a connected state when viewed from the right, and the lower end surface of the supporting slide plate is in contact with the upper end surface of the limiting support block.

[0012] In a preferred embodiment, the outer end surface of the bottom protective cover in the top view direction is coplanar with the outer end surface of the top protective cover in the top view direction;

[0013] There are two limit support blocks, which are arranged in a mirror image on both sides of the vertical central axis of the bottom protective cover in the right viewing direction.

[0014] In a preferred embodiment, the limit clamping plate and the concave mounting groove are arranged in a mirror image on both sides of the vertical central axis in the right viewing direction, and the inner end surface of the limit clamping plate is adapted to the outer end surface of the concave mounting groove;

[0015] The outer end surface of the convex limiting block is adapted to the inner end surface of the concave limiting slot. There are multiple resettable fuse bodies, which are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover.

[0016] In a preferred embodiment, the convex limiting protrusions and the concave limiting slots are provided in plural numbers and are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover;

[0017] The number of the fuse pins is two, and the pins are arranged in a mirror image on both sides of the vertical central axis of the resettable fuse body in the right viewing direction.

[0018] The technical effects and advantages of this utility model are:

[0019] When the utility model is actually used, the resettable fuse body can be easily installed by correspondingly setting the concave groove, the strip-shaped limiting groove, the resettable fuse body, the fuse pins and the beeswax sealing block. At the same time, when the concave limiting groove and the convex limiting protrusion are adapted, the stability of the closure of the bottom protective cover and the top protective cover can be effectively increased, thereby facilitating the protection of the resettable fuse body. At the same time, when the beeswax sealing block is correspondingly set, the resettable fuse body can be effectively prevented from detaching from the inside of the strip limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the overall right side structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the overall cross-section connection structure of the utility model.

[0023] Figure 4 It is a schematic diagram of the overall right side cross-sectional structure of the utility model.

[0024] The accompanying drawings are marked as follows: 1 bottom protective cover, 2 top protective cover, 3 rotating connector, 4 concave groove, 5 limiting support block, 6 limiting card plate, 7 supporting slide plate, 8 convex pull block, 9 strip limiting groove, 10 concave mounting groove, 11 concave limiting card slot, 12 self-resetting fuse body, 13 fuse pin, 14 beeswax seal block, 15 convex limiting protrusion. DETAILED DESCRIPTION

[0025] The utility model provides a self-resetting fuse device, such as Figure 1 and 2 As shown, it includes a bottom protective cover 1, a top protective cover 2 is provided on the outer side of the upper end of the bottom protective cover 1, a limiting support block 5 is provided on the lower end surface of the bottom protective cover 1, and a limiting clamping plate 6 is provided on one side of the lower end of the top protective cover 2. A rotating connector 3 is provided at the connection between the bottom protective cover 1 and the top protective cover 2, which can facilitate the flipping of the top protective cover 2 on the upper end of the bottom protective cover 1;

[0026] A concave groove 4 is provided on the outer side of one end of the bottom protective cover 1, and the outer end surface of the bottom protective cover 1 in the top view direction is coplanar with the outer end surface of the top protective cover 2 in the top view direction. There are two limit support blocks 5, and they are mirror-imaged on both sides of the vertical center axis of the bottom protective cover 1 in the right view direction.

[0027] like Figure 3 and 4As shown, a concave mounting groove 10 is provided on one side of the upper end of the bottom protective cover 1, and a convex limiting bump 15 is provided on the outer end surface of the concave mounting groove 10. A concave limiting card groove 11 is provided on the inner end surface of the limiting card plate 6, which can effectively increase the stability of the closure of the bottom protective cover 1 and the top protective cover 2 after the bottom protective cover 1 and the top protective cover 2 are closed. A strip limiting groove 9 is provided on the upper end of the bottom protective cover 1, and a resettable fuse body 12 is provided on the upper end of the bottom protective cover 1. The lower end surface of the resettable fuse body 12 is provided with a fuse pin 13;

[0028] The outer end surface of the fuse pin 13 is provided with a beeswax seal 14, which can prevent the self-resetting fuse body 12 from falling off after installation. The inner end surface of the bottom protective cover 1 is provided with a support slide 7 on the upper side of the limit support block 5, and a convex pull block 8 is provided on one side of the lower end of the support slide 7. The number of the concave groove 4 and the strip-shaped limit groove 9 is respectively provided in pairs, and they are arranged in a mirrored state on both sides of the vertical central axis of the bottom protective cover 1 when viewed from the right. The concave groove 4 and the strip-shaped limit groove 9 are connected in the right viewing direction;

[0029] The lower end surface of the supporting slide 7 is fitted with the upper end surface of the limiting support block 5, and the limiting card plate 6 and the concave mounting groove 10 are arranged in a mirrored state on both sides of the vertical central axis in the right viewing direction. The inner end surface of the limiting card plate 6 is adapted to the outer end surface of the concave mounting groove 10, and the outer end surface of the convex limiting protrusion 15 is adapted to the inner end surface of the concave limiting card groove 11, which can effectively increase the stability of the closure of the bottom protective cover 1 and the top protective cover 2;

[0030] There are multiple resettable fuse bodies 12, and they are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover 1. There are multiple convex limiting protrusions 15 and concave limiting slots 11, and they are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover 1. There are two fuse pins 13, and they are arranged in a mirror image on both sides of the vertical central axis in the right viewing direction of the resettable fuse body 12.

[0031] Working principle of this utility model:

[0032] When the present invention is used, the staff flips open the top protective cover 2, and then the staff can slide the fuse pin 13 and the beeswax seal 14 from the inside of the concave groove 4 into the inner side of the concave groove 4, and slide multiple resettable fuse bodies 12 into the inside of the strip limiting groove 9 in sequence. Then the staff can press the top protective cover 2 on the upper end of the bottom protective cover 1, and clamp the concave limiting slot 11 on the outer end of the convex limiting protrusion 15. When taking the resettable fuse body 12, the staff can open the top protective cover 2, hold the resettable fuse body 12 and pull it upward, the strip limiting groove 9 will support the beeswax seal 14, and when pulling, it will squeeze the beeswax seal 14 and push it out from the outer end of the fuse pin 13.

[0033] Finally, a few points should be explained: the drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A resettable fuse device, characterized in that: include: A bottom protective cover (1) is provided with a top protective cover (2) on the outer side of its upper end, a limiting support block (5) is provided on the lower end surface of the bottom protective cover (1), a concave mounting groove (10) is provided on one side of the upper end of the bottom protective cover (1), a convex limiting bump (15) is provided on the outer end surface of the concave mounting groove (10), and a limiting clamping plate (6) is provided on one side of the lower end of the top protective cover (2); The inner end surface of the limit card plate (6) is provided with a concave limit card groove (11), the upper end of the bottom protective cover (1) is provided with a strip limit groove (9), the upper end of the bottom protective cover (1) is provided with a self-resetting fuse body (12), the lower end surface of the self-resetting fuse body (12) is provided with a fuse pin (13), and the outer end surface of the fuse pin (13) is provided with a beeswax sealing block (14).

2. A resettable fuse device according to claim 1, characterized in that: A rotating connector (3) is provided at the connection between the bottom protective cover (1) and the top protective cover (2), and a concave groove (4) is provided on the outer side of one end of the bottom protective cover (1); The inner end surface of the bottom protective cover (1) is provided with a supporting slide plate (7) on the upper side of the limiting support block (5), and a convex pull block (8) is provided on one side of the lower end of the supporting slide plate (7).

3. The resettable fuse device according to claim 2, characterized in that: The number of the concave groove (4) and the strip-shaped limiting groove (9) is provided in pairs, and the two grooves are arranged in a mirror-image state on both sides of the vertical central axis of the bottom protective cover (1) in the right viewing direction; The concave groove (4) and the strip-shaped limiting groove (9) are in a connected state when viewed from the right, and the lower end surface of the supporting slide plate (7) is in contact with the upper end surface of the limiting support block (5).

4. The resettable fuse device according to claim 1, characterized in that: The outer end surface of the bottom protective cover (1) in the top view direction and the outer end surface of the top protective cover (2) in the top view direction are arranged in a coplanar state; The number of the position-limiting support blocks (5) is two, and they are arranged in a mirror-image state on both sides of the vertical central axis of the bottom protective cover (1) in the right viewing direction.

5. The resettable fuse device according to claim 1, characterized in that: The limiting card plate (6) and the concave mounting groove (10) are arranged in a mirror image state on both sides of the vertical central axis in the right viewing direction, and the inner end surface of the limiting card plate (6) is adapted to the outer end surface of the concave mounting groove (10); The outer end surface of the convex limiting protrusion (15) is adapted to the inner end surface of the concave limiting slot (11); the resettable fuse bodies (12) are provided in plurality and are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover (1).

6. The resettable fuse device according to claim 1, characterized in that: The convex limiting protrusions (15) and the concave limiting slots (11) are both provided in plurality and are arranged in an array on both sides of the vertical central axis in the main viewing direction of the bottom protective cover (1); The number of the fuse pins (13) is two, and they are arranged in a mirror image state on both sides of the vertical central axis of the resettable fuse body (12) in the right viewing direction.

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