Positioning device for fixing electrical equipment, electrical equipment and surge protector

Abstract

The embodiment of the utility model provides a positioning device for fixing electrical equipment, the electrical equipment and a surge protector. The positioning device comprises a shell suitable for fixing the electrical equipment; a fixing pin passing through a first element of the electrical apparatus and coupled to the housing; the accommodating cavity is suitable for accommodating a second element of the electrical equipment; the stop part is arranged at one end of the accommodating cavity and is suitable for being in contact with the second element to limit the second element from sliding in the first direction when the second element slides to a preparation position in the accommodating cavity in the first direction; the at least one positioning bulge is arranged on the inner wall of the accommodating cavity, is suitable for being aligned with the at least one positioning hole of the second element positioned at the preparation position, and is inserted into the at least one positioning hole when the second element slides to the mounting position from the preparation position along the second direction; wherein a predetermined non-zero included angle is formed between the second direction and the first direction. Therefore, the alignment accuracy of the first element and the second element can be improved.

Description

Technical Field

[0001] Example embodiments of the present disclosure generally relate to the field of electrical equipment, and in particular, to a positioning device for fixing electrical equipment, the electrical equipment, and a surge protector. Background Art

[0002] Surge protector (SPD) is an electrical device that provides safety protection for various electronic equipment, instruments and communication lines. When a spike current or voltage suddenly occurs in an electrical circuit or communication line due to external interference, the surge protector can conduct and shunt in a very short time, thereby preventing the surge from damaging other devices in the circuit.

[0003] However, traditional surge protectors still have problems such as poor positioning accuracy during processing and low yield rate. Utility Model Content

[0004] In the first aspect of the present disclosure, a positioning device for fixing an electrical device is provided. The positioning device comprises: a housing, suitable for fixing the electrical device; a fixing pin, passing through a first element of the electrical device and coupled to the housing; a housing, suitable for accommodating a second element of the electrical device; a stopper, arranged at one end of the housing, and suitable for contacting the second element to limit the sliding of the second element along the first direction when the second element slides in the housing to a preparatory position along the first direction; and at least one positioning protrusion, arranged on the inner wall of the housing, and suitable for aligning with at least one positioning hole of the second element located at the preparatory position, and inserting into the at least one positioning hole during the sliding of the second element from the preparatory position to the installation position along the second direction, wherein the second direction has a predetermined non-zero angle with the first direction.

[0005] In some embodiments, the accommodating cavity further includes: at least one mounting hole, arranged to be aligned with the at least one positioning protrusion along the axial direction and partially accommodate the positioning protrusion.

[0006] In some embodiments, the stop member includes: a stop plate, slidably coupled to the shell and suitable for contacting the second element and limiting the second element from sliding along the first direction, the stop plate including a strip hole; and a fixing member, passing through the strip hole and suitable for coupling the stop plate to the shell.

[0007] In some embodiments, the shell includes: a slideway, the extension direction of the slideway has a predetermined non-zero angle with the first direction; and the stop plate includes a sliding bar arranged in the slideway and suitable for sliding in the slideway along the extension direction of the slideway.

[0008] In some embodiments, the positioning device also includes: a limit member, coupled to the shell, suitable for contacting the second element while the second element is in the preparatory position to limit the second element from sliding along a third direction, wherein the third direction has a predetermined non-zero angle with the first direction; and the third direction has a predetermined non-zero angle with the second direction.

[0009] In some embodiments, the positioning device further includes: a fixing component, which is arranged at the opening of the accommodating cavity and is suitable for contacting the second element to fix the second element at the installation position.

[0010] The positioning device positions the second element (especially the electrode plane at the second element) through at least one positioning protrusion, and limits the contact between the stopper and the second element (such as the stop point of the second element), thereby improving the accuracy of fixing the position of the second element. Furthermore, on the one hand, the accuracy of the welding position between the first element and the second element can be improved, and on the other hand, the requirement for the yield rate of the first element can be reduced, thereby reducing the production cost.

[0011] In a second aspect of the present disclosure, an electrical device is provided. The electrical device comprises: a first element coupled to a housing of a positioning device through a fixing pin of the positioning device and a second element coupled to a receiving cavity of the positioning device and adapted to maintain a predetermined positional relationship with the first element when in an installed position, the second element further comprising: a stop point arranged on one side of the second element along a first direction, adapted to contact with a stopper of the positioning device at least when the second element is in a preparatory position and an installed position, and at least one positioning hole arranged on one side of the second element facing the positioning protrusion, adapted to couple with the positioning protrusion of the receiving cavity when the second element is in an installed position.

[0012] In some embodiments, the second component further comprises a pin, and wherein the first component and the pin are fixed by welding.

[0013] In some embodiments, the second component includes an electrode plane, and the positioning hole is formed on the electrode plane.

[0014] In some embodiments, the second element further includes: a limiting point adapted to contact with a limiting member of the positioning device when the second element is in the preparation position and the installation position.

[0015] In a third aspect of the present disclosure, a surge protector is provided. The surge protector comprises: a housing including at least one mounting protrusion; and

[0016] According to the second aspect of the present disclosure, there is provided an electrical device, wherein the second component of the electrical device is coupled to at least one mounting protrusion.

[0017] It should be understood that the contents described in this content section are not intended to limit the key features or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0019] Figure 1 shows a schematic diagram of the overall structure of an electrical device according to some embodiments of the present disclosure;

[0020] Figure 2 shows an exploded view of an electrical device according to some embodiments of the present disclosure;

[0021] Figure 3 A schematic diagram showing a first element and a second element fixed in a positioning device according to some embodiments of the present disclosure is shown;

[0022] Figure 4 An exploded view showing a first element, a second element and a positioning device according to some embodiments of the present disclosure; and

[0023] Figure 5 An exploded view of the first element, the second element and the positioning device according to some embodiments of the present disclosure at other viewing angles is shown. DETAILED DESCRIPTION

[0024] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0025] It should be noted that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this article, and any type of embodiment may be included under any section / subsection. In addition, the embodiments described in any section / subsection may be combined in any manner with any other embodiments described in the same section / subsection and / or different sections / subsections.

[0026] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0027] As briefly mentioned above, traditional surge protectors rely on the surface varistor (MOV) packaging layer for positioning to achieve the alignment of the varistor pins and the tripping element, and then the pins and the tripping element can be automatically welded. However, due to the large fluctuations in the surface size of the varistor packaging layer, the alignment accuracy of the varistor and the tripping element is low, which in turn affects the welding effect of the varistor and the tripping element. And under this scheme, if you want to improve the positioning accuracy of the varistor, you need to put forward higher requirements on the dimensional accuracy of the varistor encapsulation layer, which leads to problems such as low yield rate of varistors and high production costs.

[0028] According to the present disclosure, a positioning device, electrical device and surge protector for fixing electrical equipment are provided to solve or at least partially solve the above-mentioned problems and other potential problems existing in traditional solutions. According to an embodiment of the present disclosure, by fixing the first element and the second element of the electrical equipment in the positioning device respectively, the first element and the second element can be kept in a determined relative position, which facilitates the accurate welding of the first element and the second element. The positioning device positions the second element (especially the electrode plane at the second element) by at least one positioning protrusion, and limits the contact between the stopper and the second element (such as the stop point of the second element), thereby improving the accuracy of fixing the position of the second element. Furthermore, on the one hand, the accuracy of the welding position of the first element and the second element can be improved, and on the other hand, the requirements for the yield rate of the first element can be reduced, thereby reducing the production cost.

[0029] Figure 1 A schematic diagram of the overall structure of an electrical device according to some embodiments of the present disclosure is shown. Figure 2 1 shows an exploded view of an electrical device according to some embodiments of the present disclosure. Figure 1 and Figure 2As shown, the electrical device generally includes a housing 10, a first element 8 and a second element 9 arranged in the housing 10. The first element 8 and the second element 9 need to be welded in advance in a positioning device before being installed inside the housing 10. The first element 8 and the second element 9 are respectively fixed in predetermined positions of the positioning device to ensure that the first element 8 and the second element 9 maintain a determined relative position, thereby accurately welding the first element 8 and the second element 9. The fixing of the first element 8 and the second element 9 by the positioning device will be specifically described below.

[0030] In some embodiments, the electrical device may include a surge protector, the first element 8 may be a tripping element of the surge protector, and the second element 9 may be a varistor (MOV) device of the surge protector. The first element 8 and the second element 9 are respectively coupled to predetermined positions in the positioning device, and the tripping element is aligned with the pin 91 of the varistor, so as to facilitate the welding device to automatically weld the tripping element and the pin 91. In some embodiments, the tripping element and the pin 91 are fixed by low-temperature solder. When the surge protector is arranged in the circuit and an abnormality occurs in the circuit, resulting in a surge protector failure (such as thermal collapse of the surge protector or internal short circuit, etc.), the low-temperature solder is quickly melted by heat, thereby triggering the tripping element to trip to cut off the internal circuit of the surge protector. In some embodiments, the second element 9 may also include an electrode 93 for coupling to the circuit and an electrode 93 plane 92 coupled to the electrode 93, etc.

[0031] Figure 3 A schematic diagram showing a first element and a second element fixed in a positioning device according to some embodiments of the present disclosure is shown, Figure 4 and Figure 5 The exploded views of the first element, the second element and the positioning device at different viewing angles according to some embodiments of the present disclosure are shown respectively. Figures 3 to 5 As shown, the positioning device includes a housing 1, a fixing pin 2 for fixing a first element 8, a receiving cavity 3 for accommodating a second element 9, a stopper 4 arranged in the receiving cavity 3 and used for fixing the second element 9, and at least one positioning protrusion 5.

[0032] The accommodating chamber 3 is formed on one side of the housing 1 and extends to the middle of the housing 1. The second element 9 can be placed into the accommodating chamber 3 from an opening on one side of the accommodating chamber 3. The second element 9 can also move in the accommodating chamber 3 at least along the first direction, the second direction and the third direction to adjust the position of the second element 9 in the accommodating chamber 3. In some embodiments, the three directions mentioned above have a predetermined angle between each other, for example, the first direction and the second direction have a predetermined angle (for example, 45°, 74°, 90°, etc.), similarly, the first direction and the third direction have a predetermined angle (for example, 45°, 74°, 90°, etc.), and the second direction and the third direction have a predetermined angle (for example, 45°, 74°, 90°, etc.). In some embodiments, the first direction, the second direction and the third direction may be perpendicular to each other.

[0033] The stopper 4 is arranged at one end of the accommodating cavity 3, and is adapted to contact the second element 9 after the second element 9 slides to a predetermined position in the accommodating cavity 3 along the first direction, thereby blocking the second element 9 from continuing to slide along the first direction. In some embodiments, the stopper 4 includes a stopper plate 41 and a fixing member 42, and a bar hole 44 is provided on the stopper plate 41, and the extension direction of the bar hole 44 has a predetermined non-zero angle with the first direction. The fixing member 42 is coupled with the housing 1 after passing through the bar hole 44, so that the stopper plate 41 is coupled to the housing 1 by the fixing member 42, and the stopper plate 41 can also slide relative to the fixing member 42 along the extension direction of the bar hole 44 after the first element 8 and the second element 9 are welded, so as to avoid the second element 9, thereby facilitating the removal of the second element 9 from the positioning device.

[0034] In some embodiments, the housing 1 further includes a slideway 11, and the extension direction of the slideway 11 is parallel to the extension direction of the bar hole 44. The stop plate 41 further includes a sliding bar 43 arranged in the slideway 11. Through the cooperation of the slideway 11 and the sliding bar 43, the stability of the stop plate 41 sliding along the extension direction of the slideway 11 (that is, the extension direction of the bar hole 44) can be improved.

[0035] In some embodiments, the second element 9 includes a stop point, which is suitable for contacting the stop plate 41. In some embodiments, the stop point can be arranged on the pin 91 of the second element 9. In this way, the second element 9 can be stopped at an accurate preparation position by the contact between the stop member 4 and the stop point on the pin 91. In some other embodiments, the stop point can also be arranged at a position such as the electrode 93 or the plane 92 of the electrode 93 of the second element 9. Since the positions of the pin 91, the electrode 93 and / or the plane 92 of the electrode 93 are relatively determined in the second element 9, arranging the stop point on the pin 91, the electrode 93 or the plane 92 of the electrode 93 can reduce the interference of the size of the varistor packaging layer and improve the accuracy of the positioning device in determining the position of the electrical device.

[0036] The positioning protrusion 5 is arranged on the inner wall of the accommodation cavity 3 and protrudes from the inner wall. Correspondingly, a positioning hole 94 corresponding to the positioning protrusion 5 is formed on the second element 9. When the second element 9 is in the preparatory position, the positioning hole 94 on the second element 9 is aligned with the positioning protrusion 5. At this time, the second element 9 can slide from the preparatory position to the installation position along the second direction. During this period, the positioning protrusion 5 is inserted into the corresponding positioning hole 94 of the second element 9, and the second element 9 is fixed at the installation position through the mutual cooperation of the positioning protrusion 5 and the positioning hole 94.

[0037] In some embodiments, the positioning hole 94 can be formed on the electrode 93 plane 92 of the second element 9, thereby improving the accuracy of the position where the positioning hole 94 is formed, so that the positioning device can more accurately fix the second element 9 at the installation position, so as to align the second element 9 with the first element 8.

[0038] In some embodiments, the housing 10 of the electrical device includes an installation protrusion 101. The installation protrusion 101 is arranged on the inner wall of the housing 10 and is adapted to be inserted into the positioning hole 94 of the second element 9 after the second element 9 is installed inside the housing 10, and the second element 9 is fixed inside the housing 10 through the cooperation of the installation protrusion 101 and the positioning hole 94.

[0039] Return Figure 4 and Figure 5 , in some embodiments, the number of the positioning protrusions 5 can be set to be multiple (for example, 3), and the positioning holes 94 on the second element 9 are correspondingly also set to be multiple (for example, 3). In some implementations, at least one of the multiple positioning protrusions 5 is not collinear with the other positioning protrusions 5. For example, when three positioning protrusions 5 are distributed in the multiple accommodation cavities 3, the three positioning protrusions 5 can be distributed in the accommodation cavity 3 in a "pin" shape (that is, the three positioning protrusions 5 can be respectively distributed at the three vertices of a triangle). Correspondingly, the positioning holes 94 of the second element 9 are also distributed in a "pin" shape (that is, the three holes are also respectively distributed at the three vertices of a triangle) on the electrode 93 plane 92 of the second element 9. The stability of the second element 9 fixed at the installation position can be further improved.

[0040] In some embodiments, an installation hole 31 is further formed in the accommodation cavity 3, and the installation hole 31 corresponds to the positioning protrusion 5 one by one. The positioning protrusion 5 can be partially inserted into the installation hole 31 and partially protrude from the inner wall of the accommodation cavity 3. The part of the positioning protrusion 5 protruding from the inner wall of the accommodation cavity 3 is adapted to be inserted into the positioning hole 94. In this way, the positioning protrusion 5 can be fixed in the accommodation cavity 3 and used to position the second element 9.

[0041] In some embodiments, the positioning device further includes a fixing assembly 7, which is arranged on one side of the opening of the accommodating cavity 3 and is adapted to be coupled with the housing 1 after the second element 9 is fixed at the installation position, and the fixing assembly 7 includes at least one pressing piece 71. When the fixing assembly 7 is coupled to the housing 1, the pressing piece 71 contacts the second element 9 and presses the second element 9 into the accommodating cavity 3. In some embodiments, the fixing assembly 7 and the housing 1 can be coupled with the housing 1 by fasteners (such as bolts, etc.), snap-fit ​​connections, etc.

[0042] In some embodiments, the positioning device further includes a stopper 6, which is coupled to the housing 1 to contact the second element 9 when the second element 9 is in the preparatory position and the installation position, and to limit the displacement of the second element 9 along the third direction. On the one hand, the movement range of the second element 9 can be limited, and on the other hand, the accuracy of the positioning protrusion 5 being inserted into the positioning hole 94 can be improved.

[0043] In some embodiments, the second element 9 includes a limiting point, and when the second element 9 is located at the preparation position or the installation position, the limiting point of the second element 9 contacts the limiting member 6 of the positioning device. In some embodiments, the limiting point can be arranged on the pin 91, the electrode 93 or the plane 92 of the electrode 93 of the second element 9, thereby improving the accuracy of the positioning device in fixing the position of the second element 9.

[0044] Since the positioning device can improve the accuracy of the relative position between the tripping element and the pin 91, the welding accuracy and the uniformity of the welding between the tripping element and the pin 91 in multiple surge protectors can be improved. Different surge protectors and / or different batches of surge protectors can accurately complete the tripping under similar (or the same) conditions, thereby improving the quality of the product.

[0045] The above descriptions of various implementations of the present disclosure are exemplary, non-exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The selection of terms used herein is intended to best explain the principles of the implementations, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the various implementations disclosed herein.

Claims

1. A positioning device for fixing electrical equipment, characterized in that: include: A housing (1) adapted to fix the electrical device; A fixing pin (2) passing through the first element (8) of the electrical device and coupled to the housing (1); A receiving chamber (3) adapted to receive a second component (9) of the electrical device; a stopper (4) arranged at one end of the accommodating cavity (3) and adapted to contact the second element (9) when the second element (9) slides along the first direction in the accommodating cavity (3) to a preparatory position so as to limit the sliding of the second element (9) along the first direction; as well as At least one positioning protrusion (5) is arranged on the inner wall of the accommodating cavity (3) and is suitable for being aligned with at least one positioning hole (94) of the second element (9) located at the preparation position, and is inserted into the at least one positioning hole (94) when the second element (9) slides from the preparation position to the installation position along a second direction, wherein the second direction has a predetermined non-zero angle with the first direction.

2. The positioning device according to claim 1, characterized in that: The accommodating chamber (3) further comprises: At least one mounting hole (31) is arranged to be aligned with the at least one positioning protrusion (5) along the axial direction and partially accommodate the positioning protrusion (5).

3. The positioning device according to claim 1, characterized in that: The stop member (4) comprises: a stop plate (41) slidably coupled to the housing (1) and adapted to contact the second element (9) and limit the second element (9) from sliding along a first direction, the stop plate (41) comprising a bar hole (44); and A fixing member (42) is inserted into the strip hole (44) and is suitable for coupling the stop plate (41) to the housing (1).

4. The positioning device according to claim 3, characterized in that: The housing (1) comprises: a slideway (11), wherein an extending direction of the slideway (11) has a predetermined non-zero angle with the first direction; and The stop plate (41) comprises a sliding bar (43) which is arranged in the slideway (11) and is suitable for sliding in the slideway (11) along the extension direction of the slideway (11).

5. The positioning device according to any one of claims 1 to 4, characterized in that: Also includes: A limit member (6) is coupled to the housing (1) and is adapted to contact the second element (9) when the second element (9) is in the preparatory position to limit the second element (9) from sliding along a third direction, wherein the third direction has a predetermined non-zero angle with the first direction; and the third direction has a predetermined non-zero angle with the second direction.

6. The positioning device according to claim 1, characterized in that: Also includes: A fixing assembly (7) is arranged at the opening of the accommodating cavity (3) and is suitable for contacting the second element (9) to fix the second element (9) at the installation position.

7. An electrical device, characterized in that: include: A first element (8) coupled to a housing (1) of the positioning device via a fixing pin (2) of the positioning device; and A second element (9) coupled to the receiving cavity (3) of the positioning device and adapted to maintain a predetermined positional relationship with the first element (8) when in the installed position, the second element (9) further comprising: a stop point, arranged on one side of the second element (9) along the first direction, adapted to contact with the stop member (4) of the positioning device at least when the second element (9) is located in the preparation position and the installation position, and At least one positioning hole (94) is arranged on a side of the second element (9) facing the positioning protrusion (5), and is suitable for coupling with the positioning protrusion (5) of the accommodating cavity (3) when the second element (9) is located in the installation position.

8. The electrical device according to claim 7, characterized in that: The second component (9) further comprises a pin (91), and The first element (8) and the pin (91) are fixed by welding.

9. The electrical device according to claim 7, characterized in that: The second element (9) includes an electrode (93) plane (92), and the positioning hole (94) is formed on the electrode (93) plane (92).

10. The electrical device according to claim 7, characterized in that: The second element (9) further comprises: a limiting point, which is suitable for contacting with the limiting member (6) of the positioning device when the second element (9) is in the preparation position and the installation position.

11. A surge protector, characterized in that: include: The housing (10) comprises at least one mounting protrusion (101); as well as The electrical device according to any one of claims 7 to 10, wherein the second element (9) of the electrical device is coupled to the at least one mounting protrusion (101).

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