Anti-failure tripping button device and molded case circuit breaker thereof

Abstract

The utility model relates to an anti-failure tripping button device, which comprises a button body, a spring, a first shaft part, a second shaft part and a third shaft part, one end of the first shaft part, which is close to the second shaft part, is provided with a limiting boss, and the diameters of the first shaft part, the second shaft part and the third shaft part are sequentially reduced. Wherein a barb is arranged on the third shaft part, the spring is arranged between the second shaft part and the barb in a sleeving mode, and the diameter of the first shaft part is smaller than that of the limiting boss. The utility model also provides a molded case circuit breaker which is provided with the anti-failure button device. According to the utility model, the limiting boss is arranged, so that the button device does not fall off when being matched with the shell, the failure is avoided, and the product quality of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a molded case circuit breaker technical field especially relates to a kind of anti-failure tripping button device and its molded case circuit breaker. BACKGROUND

[0002] As Figure 1 As shown in button device that molded case circuit breaker is used in prior art, above structure is due to the limit of lower barb and cover, prone to button drop, cause circuit breaker failure, based on this problem, the present application proposes a kind of solution. SUMMARY

[0003] The utility model discloses a kind of anti-failure tripping button device, to solve the above technical problem.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of anti-failure button device, characterized by, including button body and spring, including first shaft portion, second shaft portion and third shaft portion, the first shaft portion is close to the limit boss of one end of the second shaft portion, wherein the diameter of first shaft portion, second shaft portion, third shaft portion decreases in turn, wherein third shaft portion is provided with barb, the spring is sleeved between second shaft portion and barb, the diameter of first shaft portion is less than the diameter of limit boss.

[0006] The utility model further provides a kind of molded case circuit breaker, with the anti-failure button device described, the anti-failure button device is arranged in circuit breaker shell, the upper column and lower column are provided in the circuit breaker shell, the upper column and lower column are formed with the accommodation cavity that is housed to button device and can be provided with the expansion of button device, the top of the accommodation cavity is provided with through-hole, the top of the top through-hole of button device is flush, the inner diameter of limit boss is greater than the inner diameter of upper column.

[0007] The utility model further sets up, the limit boss is located at the cooperation of button body and shell.

[0008] The utility model further sets up, the barb is located outside the lower column, the third shaft portion acts in traction rod in molded case circuit breaker.

[0009] The utility model has the advantages that: in the utility model, by setting a limit boss, ensure that button device and shell cooperate, not drop, avoid failure, improve the product quality of circuit breaker. BRIEF DESCRIPTION OF DRAWINGS

[0010] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0011] Figure 1 This is a structural diagram of the existing design.

[0012] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0013] Figure 3 This is a side view of Embodiment 2 of the present invention.

[0014] Figure 4 for Figure 3 Sectional view at point AA.

[0015] Reference numerals: 10, button body; 101, first shaft; 102, second shaft; 103, third shaft; 104, limiting boss; 105, barb; 20, spring; 30, circuit breaker housing; 301, upper column; 302, lower column; 303, receiving cavity; 304, through hole; 40, traction rod; Detailed Implementation

[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0017] Example 1:

[0018] like Figure 2 As shown, this embodiment is an anti-failure button device, including a button body 10 and a spring 20, including a first shaft portion 101, a second shaft portion 102 and a third shaft portion 103. A limiting boss 104 is provided at one end of the first shaft portion 101 near the second shaft portion 102. The diameters of the first shaft portion 101, the second shaft portion 102 and the third shaft portion 103 decrease sequentially. A barb 105 is provided on the third shaft portion 103. The spring 20 is sleeved between the second shaft portion 102 and the barb 105. The diameter of the first shaft portion 101 is smaller than the diameter of the limiting boss 104.

[0019] Example 2:

[0020] like Figures 3-4As shown, the embodiment provides a molded case circuit breaker with the anti-failure button device, the anti-failure button device is arranged in the circuit breaker shell 30, the circuit breaker shell 30 is provided with an upper column body 301 and a lower column body 302, the upper column body 301 and the lower column body 302 are formed with a containing cavity 303 for containing the button device and allowing the button device to stretch out and in, the top of the containing cavity 303 is provided with a through hole 304, the top of the through hole 304 of the top of the button device is flush, and the inner diameter of the limiting boss 104 is greater than the inner diameter of the upper column body 301. The limiting boss 104 is located at the cooperation position of the button body 10 and the shell. The barb 105 is located outside the lower column body 302, and the third shaft part 103 acts on the traction rod 40 in the molded case circuit breaker.

[0021] In the utility model, by setting a limiting boss 104, when the button device cooperates with the shell, the limiting boss 104 can prevent the button device from falling off, avoid failure and improve the product quality of the circuit breaker.

[0022] As some terms are used in the description and claims to refer to certain components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The description and claims of the present application do not distinguish components by name, but by the functional difference of the components. As mentioned throughout the description and claims, "including" is an open term, which should be interpreted as "including but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0023] It should be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such goods or system. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of another identical element in the goods or system including the element.

[0024] The above description shows and describes several preferred embodiments of the utility model, but as before, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept disclosed herein by the above-mentioned teaching or related art or knowledge. The modification and change made by those skilled in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims attached to the utility model.

Claims

1. A fail-safe trip button device, characterized by, The button body and the spring, comprising a first shaft part, a second shaft part and a third shaft part, the first shaft part is provided with a limiting boss near one end of the second shaft part, wherein the diameters of the first shaft part, the second shaft part and the third shaft part decrease in turn, wherein the third shaft part is provided with a barb, the spring is sleeved between the second shaft part and the barb, and the diameter of the first shaft part is smaller than that of the limiting boss.

2. A molded case circuit breaker characterized by, The anti-failure trip button device as claimed in claim 1 is arranged in a circuit breaker housing, the circuit breaker housing is provided with an upper column and a lower column, the upper column and the lower column are formed with a containing cavity for containing and allowing the button device to stretch and contract, the top of the containing cavity is provided with a through hole, the top of the through hole of the button device is flush, and the inner diameter of the limiting boss is larger than the inner diameter of the upper column.

3. A molded case circuit breaker according to claim 2 wherein, The limiting boss is located at the cooperation position of the button body and the housing.

4. A molded case circuit breaker according to claim 2 wherein, The barb is located outside the lower column, and the third shaft part acts on a traction rod in a molded case circuit breaker.

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