Safety bakelite anti-short-circuit starter

Abstract

The utility model discloses a safe bakelite short-circuit-preventing starter, which comprises a shell, a clamping cover is arranged on the shell, an inner cavity in the shell is sealed through the clamping cover, and the shell is a bakelite shell. The chip further comprises a chip and electrode assemblies, the electrode assemblies comprise the first electrode assembly and the second electrode assembly, and the opening distance L between the first electrode assembly and the second electrode assembly ranges from 10 mm to 12 mm. According to the utility model, through the support table and the insert, the chip is more stable and stronger in bearing capacity after being installed, the open space L is within the range of 10mm to 12mm, the short-circuit fault caused by large current impact can be effectively resisted, the occurrence of electrode arc ignition and shell combustion fire accidents can be effectively blocked, the electrode adopts a column-type chamfered convex groove surface (or convex point), and the chip is more stable and more stable after being installed, so that the service life of the chip is prolonged. Therefore, the chip can be effectively prevented from being scratched, and the production of automatically assembling the chip can be conveniently realized.

Description

Technical Field

[0001] The utility model relates to a starter, in particular to a safety bakelite short - circuit - proof starter. Background Art

[0002] Compressors are used in household appliances such as air conditioners and refrigerators. When the compressor starts, a starter is used. Generally, a starting chip is provided inside the starter to adjust the current magnitude in the starting state and the running state. However, the current starters generally have defects such as low space efficiency utilization, poor heat dissipation performance, inaccurate fixed positioning, and high cost. Moreover, there are other defects:

[0003] When the open - file spacing range between two electrodes is set unreasonably, it is easy to cause a short - circuit fault under the impact of large current, and it is easy to occur electrode arcing and shell combustion fire accidents;

[0004] The structure design of the electrode assembly is single, the clamping force of the bending position on the chip is insufficient, the strength is not high, and the use is not stable enough;

[0005] The contact position design between the electrode assembly and the chip is unreasonable. After the chip is disassembled and assembled multiple times, the chip is easily damaged due to excessive friction between the electrode and the chip;

[0006] Finally, after the chip is installed in the shell, since the chip is clamped only by the electrode assembly, its compressive capacity is relatively poor, and the positioning ability on both sides is relatively poor, resulting in the chip being easily displaced after bearing vibration, leading to unstable contact. Content of the Utility Model

[0007] In order to solve the above problems, the utility model provides a safety bakelite short - circuit - proof starter, which adopts a reasonable structure to effectively solve the deficiencies in the prior art.

[0008] The utility model is realized through the following technical solutions: A safety bakelite short - circuit - proof starter includes:

[0009] A shell, which has a snap - on cover on the shell to seal the inner cavity inside the shell. The shell adopts a bakelite shell;

[0010] It also includes a chip and an electrode assembly. The chip and the electrode assembly are both installed in the inner cavity of the shell. The chip is arranged between the electrode assemblies and is clamped and positioned by the electrode assemblies;

[0011] The electrode assembly includes a first electrode assembly and a second electrode assembly. The open - file spacing L range between the first electrode assembly and the second electrode assembly is between 10 mm and 12 mm.

[0012] As a preferred technical solution, a first elastic bending section is formed on the first electrode assembly, a second elastic bending section is formed on the second electrode assembly, the first elastic bending section and the second elastic bending section are bent towards the chip position, and a contact point is formed at the contact end position of the chip.

[0013] As a preferred technical solution, the contact point includes a first contact point formed on the first elastic bending section and a second contact point formed on the second elastic bending section. The first contact point and the second contact point adopt a columnar structure, and the contact surfaces in the disassembly and assembly direction of the chip both have arc-shaped guiding surfaces.

[0014] As a preferred technical solution, reinforcing rib protection points are punched at the bending positions of the first elastic bending section and the first electrode assembly, and the second elastic bending section and the second electrode assembly.

[0015] As a preferred technical solution, a chip installation cavity is formed in the inner cavity of the housing. Inserts are respectively arranged on both sides in the chip installation cavity. When the chip is installed in the chip installation cavity, both sides of the chip are in contact with and supported by the inserts.

[0016] As a preferred technical solution, a misaligned supporting platform is further arranged at the bottom position of the chip in the chip installation cavity. After the chip is installed in the chip cavity, both sides of the bottom of the chip are in contact with the upper end surfaces of the misaligned supporting platform, and arc-shaped contact surfaces are formed at the contact positions between the supporting platform and the chip.

[0017] As a preferred technical solution, electrode pins are formed on both the first electrode assembly and the second electrode assembly. The electrode pins respectively pass through the pin slots opened on the housing and extend to the outside.

[0018] As a preferred technical solution, the chip is a PTC chip.

[0019] The beneficial effects of the present utility model are as follows: First, the present utility model uses a phenolic resin housing material to produce a form product for protection. The phenolic resin housing has advantages such as a higher flame retardant grade, a higher heat resistance temperature, and better insulation performance than traditional plastic housings;

[0020] Second, the opening distance between the two electrodes ranges from 10 mm to 12 mm, which can effectively resist short-circuit faults caused by large current impacts and effectively prevent electrode arcing and housing combustion fires;

[0021] Third, in the present utility model, reinforcing rib protection points are punched at the elastic bending positions of the electrodes, so that the electrodes will not deform during use, ensuring the clamping force on the chip;

[0022] Fourth, the electrodes adopt a columnar structure with chamfered convex grooves (or convex points), which is convenient for guiding when installing the chip, can effectively avoid scratching the chip, and is convenient for realizing automated chip installation production;

[0023] 5. There is also a misaligned support platform at the bottom position of the chip in the chip installation cavity. After the chip is installed in the chip cavity, both sides of the bottom of the chip are in contact with the upper end surfaces of the misaligned support platform, ensuring that both end surfaces of the PTC chip can withstand a relatively high withstand voltage after being installed. Cooperating with the inserts on both sides, the chip can be positioned with all-round wrapping after installation. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention after removing the cover;

[0027] Figure 3 It is a clamping schematic diagram of the electrode assembly of the present invention on the chip;

[0028] Figure 4 It is a schematic diagram of the structure of two electrode assemblies of the present invention;

[0029] Figure 5 It is a cross-sectional schematic diagram when the electrode assembly of the present invention is installed in the housing;

[0030] Figure 6 It is a schematic diagram of the internal structure of the housing of the present invention;

[0031] Description of the Reference Numerals in the Drawings:

[0032] 1. Housing; 2. First Electrode Assembly; 3. Second Electrode Assembly; 4. Chip; 5. First Contact Point; 6. Second Contact Point; 7. Reinforcement Rib Protection Point; 8. Second Elastic Bending Section; 9. First Elastic Bending Section; 10. First Support Platform; 11. Second Support Platform; 12. Insert; 21. Electrode Pin. Detailed Embodiments

[0033] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0034] Any feature disclosed in this specification (including any additional claims, abstract and drawings) can be replaced by other equivalent or similar-purpose alternative features unless specifically stated. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "central", "end part", "length", "outer end", etc. are based on the orientation or positional relationships shown in the 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 thus cannot be construed as a limitation to the present utility model.

[0036] In addition, in the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] The terms indicating relative spatial positions such as "upper", "above", "lower", "below", etc. used in the present utility model are for the purpose of facilitating the description of the relationship between one unit or feature and another unit or feature as shown in the drawings. The terms of relative spatial positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. For example, if the device in the drawing is flipped, the unit described as being "below" or "beneath" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0038] In the present utility model, unless otherwise clearly specified and defined, the terms "arranged", "socketed", "connected", "penetrated", "plugged in", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Such as Figure 1As shown in the figure, a safety bakelite short - circuit prevention starter of the present utility model includes a housing 1. There is a clamping cover on the housing 1, and the inner cavity of the housing 1 is sealed by the clamping cover. The housing 1 is made of bakelite. The present utility model protects the product in the form of production using bakelite housing 1 material. The bakelite housing 1 has advantages such as a higher flame - retardant grade, a higher combustion - resistant temperature, and better insulation performance than traditional plastic housings 1. The clamping cover can be assembled to the housing 1 through snap - fasteners, so it is convenient for disassembly and assembly. After disassembly, maintenance can be carried out. Of course, the clamping cover can also be connected to the housing 1 by screws, with a higher connection strength.

[0040] It also includes a chip 4 and an electrode assembly. Both the chip 4 and the electrode assembly are installed in the inner cavity of the housing 1. The chip 4 is arranged between the electrode assemblies and is clamped and positioned by the electrode assemblies. The chip 4 and the electrode assembly are the core components of the present utility model. The electrode assembly is used to complete the clamping and positioning of the chip 4 and to achieve conductive contact with the chip 4.

[0041] In this embodiment, the electrode assembly includes a first electrode assembly 2 and a second electrode assembly 3. The open - file spacing L between the first electrode assembly 2 and the second electrode assembly 3 ranges from 10 mm to 12 mm, which can effectively resist short - circuit faults caused by large - current impacts and effectively block the occurrence of electrode arcing and ignition and the combustion fire accident of the housing 1. As Figure 5 shown, the specific open - file spacing L range can be 10 mm or 12 mm. Of course, 11 mm is the optimal value.

[0042] In order to achieve elastic clamping of the chip 4 located between the two electrodes, in this embodiment, a first elastic bending section is formed on the first electrode assembly 2, and a second elastic bending section is formed on the second electrode assembly 3. The first elastic bending section and the second elastic bending section are bent towards the position of the chip 4, and contact points are formed at the contact end positions of the chip 4.

[0043] In this embodiment, as Figure 4 shown, the contact points include a first contact point 5 formed on the first elastic bending section 9 and a second contact point 6 formed on the second elastic bending section 8. The first contact point 5 and the second contact point 6 adopt a columnar structure, and the contact surfaces in the disassembly and assembly direction with the chip 4 both have arc - shaped guiding surfaces. As can be seen from the figure, the first contact point 5 and the second contact point 6 are columnar, having a cylindrical surface. When the chip 4 is disassembled and assembled, an arc - surface contact with the contact points can be achieved, reducing friction and realizing a smooth transition. It can effectively avoid scratching of the chip 4 and is convenient for realizing automated chip 4 installation production.

[0044] In order to increase the strength and make the elastic force and strength at the bending position higher, in this embodiment, reinforcing rib protection points 7 are punched at the bending positions of the first elastic bending section and the first electrode assembly 2, and the second elastic bending section 8 and the second electrode assembly 3. Through the reinforcing rib protection points 7, the electrodes will not deform during use, ensuring the clamping force of the chip 4.

[0045] As Figure 5 and Figure 6 shown, a chip 4 installation cavity is formed in the inner cavity of the housing 1. Inserts 12 are respectively arranged on both sides in the chip 4 installation cavity. When the chip 4 is installed in the chip 4 installation cavity, both sides of the chip 4 are in contact with and supported by the inserts 12. The number of inserts 12 can be increased to more. The contact surface between the insert 12 and the chip 4 is a horizontal plane. Furthermore, the chip 4 is positioned by the inserts 12 on both sides, so that it is limited between the two inserts 12 and will not shift its position.

[0046] As Figure 5 shown, misaligned supporting platforms, namely the first supporting platform 10 and the second supporting platform 11, are also arranged at the bottom position of the chip 4 in the chip 4 installation cavity. After the chip 4 is installed in the chip 4 cavity, both sides of the bottom of the chip 4 are in contact with the upper end surfaces of the misaligned supporting platforms respectively, and the contact positions between the supporting platforms and the chip 4 form arc-shaped contact surfaces. The supporting platforms can carry the chip 4 on the top. Misaligned supporting platforms are also arranged at the bottom position of the chip 4 in the chip 4 installation cavity. After the chip 4 is installed in the chip 4 cavity, both sides of the bottom of the chip 4 are in contact with the upper end surfaces of the misaligned supporting platforms respectively, ensuring that both end surfaces can withstand a relatively high withstand voltage after the PTC chip 4 is loaded.

[0047] As Figure 1 shown, electrode pins 21 are formed on both the first electrode assembly 2 and the second electrode assembly 3. The electrode pins 21 respectively pass through the pin slots opened on the housing 1 and extend to the outside. The chip 4 is a PTC chip.

[0048] Through tests, when the distance between the two electrodes is between 10 - 12 mm, the anti-short circuit test is qualified, and the reaction is that the PTC fails and the chip breaks, without causing electrode short circuit. When the electrode size is greater than 12 mm, the arc surface of the electrode will touch the nickel-plated ring, causing the PTC chip to fail and the product to not work. When the distance between the electrodes is less than 10 mm, after the PTC chip fails abnormally, it is easy for the distance between the two electrodes to be too small and cause a short circuit, leading to the product catching fire and causing danger.

[0049] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A safety bakelite short-circuit-proof starter, characterized in that, Comprising: A housing (1) with a clamping cover on it, and the inner cavity of the housing (1) is sealed by the clamping cover. The housing (1) is a bakelite housing (1). It further includes a chip (4) and an electrode assembly. The chip (4) and the electrode assembly are both installed in the inner cavity of the housing (1). The chip (4) is arranged between the electrode assemblies and is clamped and positioned by the electrode assemblies. The electrode assembly includes a first electrode assembly (2) and a second electrode assembly (3). The open distance L between the first electrode assembly (2) and the second electrode assembly (3) ranges from 10 mm to 12 mm. A chip installation cavity is formed in the inner cavity of the housing (1). Inserts (12) are respectively arranged on both sides in the chip installation cavity. When the chip (4) is installed in the chip installation cavity, both sides of the chip (4) are in contact with and supported by the inserts (12). A misaligned support platform is also arranged at the bottom position of the chip (4) in the chip installation cavity. After the chip (4) is installed in the chip cavity, both sides of the bottom of the chip (4) are in contact with the upper end surfaces of the misaligned support platform, and the contact positions on the support platform with the chip (4) form arc-shaped contact surfaces.

2. The safety bakelite short - circuit - proof starter according to claim 1, wherein: A first elastic bending section is formed on the first electrode assembly (2), and a second elastic bending section is formed on the second electrode assembly (3). The first elastic bending section and the second elastic bending section are bent towards the position of the chip (4), and contact points are formed at the contact end positions of the chip (4).

3. The safety bakelite short-circuit-proof starter according to claim 2, wherein: The contact points include a first contact point (5) formed on the first elastic bending section (9) and a second contact point (6) formed on the second elastic bending section (8). The first contact point (5) and the second contact point (6) adopt a columnar structure, and the contact surfaces in the disassembly and assembly direction of the chip (4) both have arc-shaped guiding surfaces.

4. The safety bakelite short-circuit-proof starter according to claim 3, wherein: Reinforcing rib protection points (7) are punched at the bending positions of the first elastic bending section and the first electrode assembly (2), and the second elastic bending section (8) and the second electrode assembly (3).

5. The safety bakelite short - circuit - proof starter according to claim 1, characterized in that: Electrode pins (21) are formed on both the first electrode assembly (2) and the second electrode assembly (3). The electrode pins (21) respectively pass through the pin slots opened on the housing (1) and extend to the outside.

6. The safety bakelite short-circuit-proof starter according to claim 1, characterized in that: The chip (4) is a PTC chip.

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