Movable contact structure and electromagnetic relay

Abstract

The utility model discloses a movable contact structure and an electromagnetic relay, which comprise a contact part and an installation part used for being connected with a movable reed, and the contact part is provided with a front section part and a rear section part. And a stop step surface for preventing foreign matters adhered to the surface of the rear section part from forwards transferring to the contact end surface of the front section part is formed at the joint of the front section part and the rear section part. According to the utility model, the stopping step surface can be used for stopping foreign matters adhered to the surface of the rear section part, so that the probability that the foreign matters on the surface of the rear section part move forwards to the contact end surface of the front section part in the process of moving along with the movable contact structure to cause the failure of the contact structure can be effectively reduced; and the use stability of the movable contact structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a moving contact structure and an electromagnetic relay. Background Art

[0002] As attached Figure 7 As shown, there is an existing moving contact structure including a contact cap 1' and a riveted column 2', but the contact cap 1' is relatively thick, and in order to facilitate demoulding, a demoulding angle needs to be set at the periphery of the contact cap 1'. As a result, in some special usage scenarios, foreign matter is easily adhered to the entire periphery of the contact cap 1'. During the operation of the moving contact structure, there is a possibility that foreign matter is transferred from the periphery of the contact cap 1' to the contact end surface at the front end of the contact portion 1', thereby causing the defect of contact failure. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a moving contact structure, which mainly solves the technical problem that the existing moving contact structure is easily transferred to the contact end surface at the front end of the contact part due to foreign matter adhering to the outer peripheral surface of the contact cap as the contact moves, thereby causing the contact to fail.

[0004] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0005] A moving contact structure comprises a contact portion and a mounting portion for connecting with a moving spring piece, wherein the contact portion comprises a front section and a rear section, and a stop step surface is formed at the intersection of the front section and the rear section for preventing foreign matter adhering to the surface of the rear section from being transferred forward to the contact end surface of the front section.

[0006] Furthermore, the rear section of the contact portion is a cylindrical structure with the front and rear ends being of equal size.

[0007] Furthermore, the rear section of the contact portion is in a truncated cone-shaped structure with a small front end and a large rear end.

[0008] Furthermore, the rear section of the contact portion is in a truncated cone-shaped structure with a large front end and a small rear end.

[0009] Furthermore, the mounting portion is a riveted column structure adapted to be riveted to the riveting hole of the movable spring.

[0010] Furthermore, the front section, the rear section and the mounting portion of the contact portion are coaxially arranged, and the front section, the rear section and the mounting portion are an integrally formed structure.

[0011] Based on the same inventive concept, the utility model also provides an electromagnetic relay, comprising any of the above-mentioned moving contact structures.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In the moving contact structure and electromagnetic relay described in the utility model, the stop step surface can be used to stop foreign matter adhering to the surface of the rear section, which can effectively reduce the probability of foreign matter on the surface of the rear section being transferred forward to the contact end surface of the front section during the movement of the moving contact structure and causing the contact structure to become blocked and fail, thereby helping to improve the stability of the moving contact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the moving contact structure of an embodiment of the utility model.

[0015] Figure 2 It is a structural side view of the moving contact structure of an embodiment of the utility model.

[0016] Figure 3 It is a schematic diagram of the assembly structure of the moving contact structure and the moving spring piece of the embodiment of the utility model.

[0017] Figure 4 It is a schematic diagram of the assembly structure of the moving contact structure and the moving spring piece at another angle in an embodiment of the utility model.

[0018] Figure 5 It is a structural side view of the moving contact structure of the second embodiment of the utility model.

[0019] Figure 6 It is a structural side view of the moving contact structure of the third embodiment of the utility model.

[0020] Figure 7 It is a schematic diagram of the contact structure of the prior art.

[0021] Description of labels:

[0022] 1. contact portion, 2. mounting portion, 3. movable spring piece, 11. front section, 12. rear section, 13. stop step surface. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Embodiment 1

[0026] Please refer to the attached Figure 1 To Attachment Figure 4 One embodiment of the utility model provides a moving contact structure, including a contact portion 1 and a mounting portion 2 for connecting with a moving spring 3, wherein the contact portion 1 has a front section 11 and a rear section 12 (the front section 11 and the rear section 12 do not require the contact portion 1 to be equally divided in half, for example, preferably, the front section 11 may be 1 / 3 to 1 / 2 of the entire contact portion 1), and a stop step surface 13 is formed at the intersection of the front section 11 and the rear section 12 to prevent foreign matter adhering to the surface of the rear section 12 from being transferred forward to the contact end surface of the front section 11. It can be understood that in this embodiment, the stop step surface 13 can play a stopping role for foreign matter adhering to the surface of the rear section 12, which can effectively reduce the probability of foreign matter on the surface of the rear section 12 being transferred forward to the contact end surface of the front section 11 during the action of the moving contact structure, thereby helping to improve the stability of the use of the moving contact structure.

[0027] Please refer to the attached Figure 1 To Attachment Figure 4 In one preferred embodiment, the rear section 12 of the contact portion 1 is a cylindrical structure with equal front and rear ends. In this embodiment, preferably, the stop step surface 13 is perpendicular to the axis of the contact portion 1. However, those skilled in the art should understand that in other embodiments, the inner side end of the stop step surface 13 may also be inclined toward the front end of the contact portion 1, and is not limited to the specific implementation method disclosed in this embodiment.

[0028] Please refer to the attached Figure 1 To Attachment Figure 4 In one preferred embodiment, the mounting portion 2 is a riveted column structure adapted to be riveted with the riveting hole of the moving spring piece 3. In this embodiment, preferably, a limited step surface is formed at the intersection of the mounting portion 2 and the rear section 12 of the contact portion 1, and the limited step surface is used to abut against the surface of the riveting hole of the moving spring piece 3 to form a riveting limit effect.

[0029] Please refer to the attached Figure 1 To Attachment Figure 4 In one preferred embodiment, the front section 11, the rear section 12 and the mounting section 2 of the contact portion 1 are coaxially arranged, and the front section 11, the rear section 12 and the mounting section 2 are an integrally formed structure. In one preferred embodiment, preferably, the movable contact structure is a contact structure made of silver, preferably pure silver.

[0030] Please refer to the attached Figure 1 To Attachment Figure 4An embodiment of the utility model further provides an electromagnetic relay, comprising the moving contact structure of any of the above embodiments.

[0031] Embodiment 2

[0032] Please refer to the attached Figure 5 The difference between this embodiment and the first embodiment is that the rear section 12 of the contact portion 1 is a truncated cone structure with a small front end and a large rear end.

[0033] Embodiment 3

[0034] Please refer to the attached Figure 6 , the difference between this embodiment and the first embodiment is that the rear section 12 of the contact part 1 is a truncated cone structure with a large front end and a small rear end. It can be understood that in this embodiment, since the rear section 12 of the contact part 1 is a truncated cone structure with a large front end and a small rear end, that is, the inclined structural design of the outer peripheral surface of the rear section 12 can make the foreign matter adhered to the outer peripheral surface of the rear section 12 automatically transfer and move in the direction away from the contact end surface of the front section 11 during the contact action. In this way, with the stopping effect of the stop step surface 13, it can more effectively prevent the foreign matter on the outer peripheral surface of the rear section 12 from transferring to the contact end surface and causing the probability of the contact structure being blocked and failing, thereby effectively improving the use stability of the contact structure.

[0035] As described above, the embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. Therefore, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the protection scope of the utility model.

Claims

1. A movable contact structure, comprising a contact portion (1) and a mounting portion (2) for connecting to a movable spring (3), characterized in that: The contact portion (1) comprises a front section (11) and a rear section (12), and a stop step surface (13) is formed at the junction of the front section (11) and the rear section (12) for preventing foreign matter adhering to the surface of the rear section (12) from being transferred forward to the contact end surface of the front section (11).

2. The movable contact structure according to claim 1, characterized in that: The rear section (12) of the contact portion (1) is a cylindrical structure with front and rear ends of equal size.

3. The movable contact structure according to claim 1, characterized in that: The rear section (12) of the contact portion (1) is in a truncated cone-shaped structure with a small front end and a large rear end.

4. The movable contact structure according to claim 1, characterized in that: The rear section (12) of the contact portion (1) is in a truncated cone-shaped structure with a large front end and a small rear end.

5. The movable contact structure according to claim 1, characterized in that: The mounting portion (2) is in the form of a riveted column structure adapted to be riveted to a riveted hole of the movable spring sheet (3).

6. The movable contact structure according to any one of claims 1 to 5, characterized in that: The front section (11), the rear section (12) and the mounting section (2) of the contact portion (1) are coaxially arranged, and the front section (11), the rear section (12) and the mounting section (2) are an integrally formed structure.

7. An electromagnetic relay, characterized in that: It comprises the moving contact structure as described in any one of claims 1 to 6.

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