Fuse limiting and pressing device

Abstract

The utility model discloses a fuse limiting and pressing device. The fuse limiting and pressing device comprises a shell composed of an outer frame, the shell is of a structure with an upper opening and a lower opening and is provided with a cavity defined by the outer frame, the bottom of the shell is connected with a connecting base, and one side of the upper end of the shell is provided with an elastic pressing piece extending inwards. The utility model has the advantages that the shell, the connecting seat and the elastic pressing sheet are integrally formed, so that seams and connecting points among parts are effectively reduced; a plurality of connecting holes in the connecting seat are convenient for quick insertion and fixation of bolts, and meanwhile, subsequent disassembly and replacement are also convenient; by optimizing the contact state of the elastic pressing sheet and the metal surface, errors caused by temperature difference are reduced, and the accuracy of temperature detection is remarkably improved, so that accurate triggering of overheating protection of equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fuse mounting structure of heating device especially a fuse limiting and pressing device. BACKGROUND

[0002] The existing water heating device usually adopts overheat protection device to prevent the equipment from being damaged or causing safety accidents due to high temperature. The working principle of overheat protection is based on heat transfer. When the temperature of the heating element exceeds the set value, the protection device detects the temperature change through the temperature sensing element and quickly triggers the action of disconnecting the circuit to cut off the heating power supply. However, the existing overheat protection device often faces some problems during installation, especially in the fixing method of the temperature sensing element and the accuracy of heat transfer.

[0003] The traditional fuse cannot reliably contact the metal surface on the back side, especially the deviation of the contact position, which will directly cause the unevenness of temperature transfer. Uneven heat conduction will cause the fuse to overheat in some areas, while other areas do not reach the required temperature for fusing. This difference may cause the fuse to fail in actual application, thereby reducing the reliability and safety of the equipment. Secondly, the traditional fuse uses multiple components for connection, which has a complex structure, high manufacturing cost and is inconvenient to disassemble and assemble, resulting in poor detection effect. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a fuse limiting and pressing device with simple structure, convenient disassembly and assembly, good contact and high detection precision.

[0005] In order to solve the above technical problems, the fuse limiting and pressing device of the utility model comprises an outer shell composed of an outer frame, the outer shell has an upper and lower opening structure and has a cavity surrounded by the outer frame, the bottom of the outer shell is connected with a connecting seat, and the upper end of the outer shell has an inwardly extending elastic pressing piece on one side.

[0006] The upper segment of the elastic pressing piece is a horizontal structure, and the lower segment is a concave curved surface structure.

[0007] The right side of the connecting seat is connected with the bottom of the outer shell.

[0008] The connecting seat is provided with a connecting hole and located on the outer side of the outer shell.

[0009] The number of outer frames is four.

[0010] The front and rear outer frames are provided with notches for accommodating electrodes.

[0011] The outer shell, connecting seat and elastic pressing piece are integrally formed.

[0012] Advantages:

[0013] (i) The outer shell, connecting seat and elastic pressure plate are integrally molded, which effectively reduces the seams and connection points between parts, optimizes the overall structure, makes it more compact and simple, and effectively reduces the difficulty of production and maintenance.

[0014] (ii) The device is reasonably designed. The multiple connection holes on the connector facilitate the quick insertion and fixing of bolts, and also facilitate subsequent disassembly and replacement, which greatly improves the operating efficiency.

[0015] (iii) By optimizing the contact state between the elastic pressure plate and the metal surface, the error caused by temperature difference is reduced, the accuracy of temperature detection is significantly improved, and thus the precise triggering of the equipment overheat protection is guaranteed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the fuse limiting and clamping device of this utility model;

[0017] Figure 2 This is a bottom schematic diagram of the fuse limiting and clamping device of this utility model;

[0018] Figure 3 This is a diagram showing the usage status of the fuse limiting and clamping device of this utility model. Detailed Implementation

[0019] The fuse limiting and clamping device of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1: As Figure 1 , Figure 2 As shown, the fuse limiting and clamping device includes a housing 1 surrounding the fuse 11. The housing 1 consists of four outer frames 4, with notches on the front and rear frames to accommodate electrodes 9. The housing 1 has an open top and bottom structure, forming an internal cavity 5 adapted to the size of the fuse 11. The housing 1 is fixed to the lower metal surface 8 via a connecting seat 2. The right side of the connecting seat 2 is connected to the bottom of the housing 1, and the left side of the connecting seat 2 has connecting holes 6 located on the outer side of the bottom of the housing 1, with a minimum of three holes. Figure 3 As shown, bolt 7 is inserted through connecting hole 6 and the connecting seat 2 is fixed to metal surface 8, thereby providing better stability; an elastic pressure plate 3 for pressing fuse 11 is provided on the top side of the housing 1. The elastic pressure plate 3 has a curved structure that allows fuse 11 to be pressed tightly against metal surface 8. Compared with surface contact such as line contact, it increases the contact area with fuse, reduces the temperature difference between fuse and metal surface, and improves the consistency of temperature sensing; housing 1, connecting seat 2 and elastic pressure plate 3 are integrally molded structures, which effectively reduces the seams and connection points between parts, thereby improving the stability and durability of the overall structure, simplifying the production process, and saving time and cost.

Claims

1. A fuse limiting and clamping device, characterized in that, The shell (1) consists of an outer frame (4), the shell (1) has an open structure at the top and bottom and a cavity (5) enclosed by the outer frame (4), the bottom of the shell (1) is connected to a connecting seat (2), and the upper side of the shell (1) has an inwardly extending elastic pressure plate (3).

2. The fuse limiting and clamping device according to claim 1, characterized in that: The upper section of the elastic pressure plate (3) is a horizontal structure, and the lower section of the elastic pressure plate (3) is an inwardly concave curved surface structure.

3. The fuse limiting and clamping device according to claim 2, characterized in that: The right side of the connector (2) is connected to the bottom of the outer shell (1).

4. The fuse limiting and clamping device according to claim 3, characterized in that: The connector (2) has a connector hole (6) and is located on the outside of the outer shell (1).

5. The fuse limiting and clamping device according to claim 4, characterized in that: The number of outer frames (4) is 4.

6. The fuse limiting and clamping device according to claim 5, characterized in that: The outer frame (4) has a notch to accommodate the electrode.

7. The fuse limiting and clamping device according to claim 6, characterized in that: The outer shell (1), connecting seat (2) and elastic pressure plate (3) are integrally formed.

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