A contact assembly and a temperature controller
By forming a connecting part on the pin of the thermostat and setting mounting holes on the contact plate, and stamping an anti-detachment part, the problem of rivet loosening is solved, a stable connection between the pin and the contact plate is achieved, reducing costs and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN CHUANCHENG PRECISION ELECTRONICS CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-26
Smart Images
Figure CN224288157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an electrical contact assembly and a temperature controller. Background Technology
[0002] When the thermostat is subjected to high temperature conditions during operation, the bimetallic strip inside the thermostat will deform due to heat, causing the moving contact and the stationary contact to separate, thereby disconnecting the circuit and achieving the corresponding protection function.
[0003] The thermostat housing contains two contact assemblies. Each assembly includes a pin extending outside the housing and a contact piece connected to the end of the pin that extends into the housing. One contact piece has a stationary conductive element, while the other has a horizontally placed U-shaped movable spring with a movable conductive element. Currently, the contact piece and pin are riveted together. However, in high-temperature operating conditions (exceeding 250°C), and given the thermostat's repeated heating and cooling, the rivet material differs from the contact piece and pin material. After repeated thermal expansion and contraction, the rivet joint may loosen, causing the pin to wobble relative to the contact piece. This affects the product's reliability and lifespan. Utility Model Content
[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a contact assembly with a stable and reliable connection between the pin and the contact piece, which eliminates the need for additional parts to reduce processing costs, simplifies the production and assembly process, and still has a long service life under the influence of thermal expansion and contraction; the second objective is to provide a temperature controller using the above-mentioned contact assembly.
[0005] A contact assembly according to a first aspect of the present invention includes: a pin and a contact piece, wherein a mounting hole is provided through the contact piece, and a connecting portion is formed at the upper end of the pin, which is inserted into and tightly fitted with the mounting hole. At least two anti-detachment portions are stamped at the upper end of the connecting portion, and the anti-detachment portions are capable of abutting against the upper surface of the contact piece to prevent the pin from detaching downward from the contact piece.
[0006] A contact assembly according to an embodiment of the present invention has at least the following beneficial effects:
[0007] The above-described contact assembly has a connecting part formed at the upper end of the pin, and a mounting hole is provided on the contact piece for the connecting part to be inserted. The connecting part and the mounting hole fit tightly together to connect the pin and the contact piece. The upper end of the connecting part is then stamped to form an anti-detachment part to prevent the pin from falling off the contact piece. Without adding any parts, the connection between the pin and the contact piece can be made stable and reliable, reducing processing costs, simplifying the production and assembly process, and still having a long service life under the influence of thermal expansion and contraction.
[0008] In some embodiments of this utility model, a punching groove is formed in the middle of the upper end face of the connecting part and two anti-detachment parts distributed on opposite sides of the punching groove. The anti-detachment parts are inclined from bottom to top along mutually opposing directions to prevent the anti-detachment parts from moving downward relative to the contact piece.
[0009] In some embodiments of this utility model, the mounting hole is a rectangular through hole, the part of the connecting part that passes through the rectangular through hole is a quadrangular prism that is in close contact with the inner peripheral wall of the rectangular through hole, and the connecting part is provided with a limiting platform part below the quadrangular prism.
[0010] In some embodiments of this utility model, the connecting part is in the shape of a long strip plate arranged in a vertical direction, two connecting parts are spaced apart at the upper end of the pin, and two mounting holes are correspondingly provided.
[0011] In some embodiments of this utility model, the sidewall of the connecting part is provided with protruding ribs or protrusions.
[0012] In some embodiments of this utility model, the pin includes a vertical plate segment and a horizontal plate segment connected to the upper end of the vertical plate segment. The connecting part is formed at the end of the horizontal plate segment and extends upward. The upper surface of the horizontal plate segment is provided with a protrusion. The rib or the bulge is formed on the side wall of the connecting part away from the protrusion.
[0013] In some embodiments of this utility model, a horizontally placed "U"-shaped movable spring is stacked on one side surface of the electrical contact piece, and two riveting posts protrude from one end of the movable spring on one side surface of the electrical contact piece.
[0014] A temperature controller according to a second aspect of the present invention includes two of the above-mentioned electrical contact assemblies. The temperature controller can make the connection between the pin and the electrical contact secure and reliable without adding any parts, thereby reducing processing costs, simplifying the production and assembly process, and still having a long service life under the influence of thermal expansion and contraction.
[0015] A temperature controller, characterized in that it comprises:
[0016] In some embodiments of this utility model, a ceramic housing is provided, the housing having a cavity, the cavity having a placement plane for placing the contact piece, the bottom of the housing having a slot extending upward through the placement plane and communicating with the cavity, the slot having a rectangular cross-section, two connecting parts being spaced apart and elastically abutting against the two ends of the slot in the length direction, and two mounting holes driving the upper ends of the two connecting parts away from each other so that the sides of the two connecting parts are always abutting against the two ends of the slot in the length direction.
[0017] In some embodiments of this utility model, the sidewall of the connecting part protrudes along the width direction of the cross-section of the slot and is provided with a pressing part that abuts against the inner wall of the slot.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the electrical contact assembly of this utility model;
[0021] Figure 2 for Figure 1 A schematic diagram from another perspective of the embodiment;
[0022] Figure 3 This is a schematic diagram of the structure of one embodiment of the temperature controller of this utility model;
[0023] Figure 4 for Figure 3 A cross-sectional schematic diagram of an embodiment;
[0024] Figure 5 for Figure 3 A schematic diagram of the structure after the casing is removed in the embodiment.
[0025] Figure label:
[0026] Pin 100; Vertical plate segment 101; Horizontal plate segment 102; Protrusion 103; Connecting part 110; Limiting platform part 111; Anti-detachment part 120; Punching groove 130; Protruding rib 140; Protruding bulge 150; Electrical contact piece 200; Mounting hole 210; Riveting post 220; Moving spring 300; Housing 400; Cavity 410; Placement plane 420; Slot 430. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] See Figure 1 and Figure 2 The present invention provides a contact assembly comprising: a pin 100 and a contact piece 200. The contact piece 200 has a through mounting hole 210. The upper end of the pin 100 is formed with a connecting portion 110 that is inserted into and tightly fitted with the mounting hole 210. The upper end of the connecting portion 110 is stamped with at least two anti-detachment portions 120 that are opposite to each other. The anti-detachment portions 120 can abut against the upper surface of the contact piece 200 to prevent the pin 100 from detaching downward from the contact piece 200.
[0032] The above-described contact assembly has a connecting portion 110 formed at the upper end of the pin 100, and a mounting hole 210 is provided on the contact piece 200 for the connecting portion 110 to be inserted. The connecting portion 110 and the mounting hole 210 are tightly fitted to connect the pin 100 and the contact piece 200. The upper end of the connecting portion 110 is then stamped to form an anti-detachment portion 120 to prevent the pin 100 from detaching downward from the contact piece 200. This design ensures a stable and reliable connection between the pin 100 and the contact piece 200 without the need for additional components, reducing processing costs, simplifying production and assembly processes, and maintaining a long service life even under the influence of thermal expansion and contraction.
[0033] See Figure 1 In some embodiments of this utility model, a punching groove 130 and two anti-detachment portions 120 distributed on opposite sides of the upper end face of the connecting portion 110 are formed in the middle of the upper end face. The anti-detachment portions 120 are inclined from bottom to top along mutually opposing directions to prevent the anti-detachment portions 120 from moving downward relative to the contact piece 200. It can be understood that the user only needs to use a straight punching tool to punch downward along the upper end face of the connecting portion 110 to form the punching groove 130. The material on both sides of the punching tool is squeezed and deformed to move away from each other, thereby forming two anti-detachment portions 120, further simplifying the processing steps of the anti-detachment portions 120 and improving production efficiency.
[0034] See Figure 1 , Figure 2 and Figure 3 In some embodiments of this utility model, the mounting hole 210 is a rectangular through hole, and the portion of the connecting part 110 that passes through the rectangular through hole is a quadrangular prism that is in close contact with the inner peripheral wall of the rectangular through hole. A limiting platform portion 111 is provided below the quadrangular prism of the connecting part 110. This structural design prevents relative rotation between the connecting part 110 and the contact piece 200, further ensuring the relative positional relationship between the pin 100 and the contact piece 200, thereby ensuring the normal operation of the temperature controller.
[0035] In some embodiments of this utility model, the connecting portion 110 is in the shape of a long strip plate arranged vertically, and two connecting portions 110 are spaced apart at the upper end of the pin 100. Two mounting holes 210 are correspondingly provided. It should be noted that the thermostat housing 400 is provided with corresponding slots 430 for inserting the connecting portions 110. The two connecting portions 110 extend into the thermostat housing 400 through the slots 430. Since there are two mounting holes 210 and two connecting portions 110, even if wear occurs between a single connecting portion 110 and the mounting hole 210, there will be no problem of relative rotation between the connecting portion 110 and the contact piece 200.
[0036] See Figure 2 and Figure 5 In some embodiments of this utility model, the sidewall of the connecting portion 110 is provided with a protruding rib 140 or a protruding bulge 150. It should be noted that the protruding rib 140 or the protruding bulge 150 can abut against the inner sidewall of the slot 430 in the width direction, thereby preventing the contact assembly from loosening relative to the thermostat housing 400. The use of the protruding rib 140 and the protruding bulge 150 differs. Generally, when the depth of the slot 430 is large, a protruding bulge 150 is provided at the lower part of the connecting portion 110 to press against the inner wall of the slot 430 in the width direction. When the depth of the slot 430 is small, a rib extending along the height direction on the sidewall of the connecting portion 110 can be used. This is because when the depth dimension of the slot 430 is large, if the rib 140 is used, the rib 140 will have a tight fit with multiple positions in the depth direction of the slot 430. The rib 140 can easily remove a large amount of material located on the inner wall of the slot 430, causing the housing 400 to be squeezed and burst.
[0037] See Figure 1 and Figure 5 In some embodiments of this utility model, the pin 100 includes a vertical plate segment 101 and a horizontal plate segment 102 connected to the upper end of the vertical plate segment 101. The connecting portion 110 is formed at the end of the horizontal plate segment 102 and extends upward. The upper surface of the horizontal plate segment 102 is provided with a protrusion 103. The rib 140 or the bulge 150 is formed on the side wall of the connecting portion 110 opposite to the protrusion 103. It can be understood that the vertical plate segment 101 is used to be inserted into a circuit board or to connect to other power supply circuits. The horizontal plate segment 102 abuts against the outer bottom wall of the thermostat housing 400 to restrict the upward displacement of the pin 100 relative to the contact piece 200. That is, the horizontal plate segment 102 and the anti-detachment portion 120 work together to prevent the pin 100 from moving relative to the contact piece 200. It should be noted that when the rib 140 or the bulge 150 abuts against the inner sidewall of the slot 430 in the width direction, the contact assembly is prone to relative deflection. The bulge 103 can counteract the deflection tendency of the contact assembly, thereby keeping the pin 100 vertically downward.
[0038] See Figure 1 and Figure 2In some embodiments of this utility model, a horizontally placed "U"-shaped movable spring 300 is stacked on one side surface of the contact piece 200. Two rivet posts 220 protrude from one end of the movable spring 300. It should be noted that the thickness of the movable spring 300 is generally smaller than that of the contact piece 200 to facilitate the deformation of the movable spring 300 by the temperature sensing element. A movable conductive element is provided on the movable spring 300, and a through hole is provided on the movable spring 300 corresponding to the rivet post 220. The rivet post 220 is pre-stamped on the contact piece 200, and then the rivet post 220 is passed through the through hole and riveted to fix it, thus combining the contact piece 200 and the movable spring 300 into a whole. The contact piece 200 and the movable spring 300 are made of the same material to avoid the contact piece 200 and the movable spring 300 being relatively loose due to thermal expansion and contraction.
[0039] See Figure 3 and Figure 4 This utility model also discloses a temperature controller, including two of the above-mentioned electrical contact assemblies. This temperature controller can make the connection between the pin 100 and the electrical contact 200 stable and reliable without adding any parts, reducing processing costs, simplifying production and assembly processes, and still having a long service life under the influence of thermal expansion and contraction.
[0040] See Figure 4 and Figure 5 In some embodiments of this utility model, a ceramic housing 400 is provided, the housing 400 having a cavity 410, the cavity 410 having a placement plane 420 for placing the contact piece 200, the bottom of the housing 400 having a slot 430 extending upward through the placement plane 420 and communicating with the cavity 410, the slot 430 having a rectangular cross-section, two connecting parts 110 being spaced apart and elastically abutting against the two ends of the slot 430 in the length direction, and two mounting holes 210 driving the upper ends of the two connecting parts 110 to move away from each other so that the sides of the two connecting parts 110 are always abutting against the two ends of the slot 430 in the length direction.
[0041] Understandably, the two connecting parts 110 inserted into the slot 430 undergo elastic deformation and press against both ends of the slot 430 along its length. At this time, the upper ends of the two connecting parts 110 will move closer to each other. The two mounting holes 210 of the contact plate 200 are then used to correct or widen the distance between the upper ends of the two connecting parts 110. At the same time, the sides of the two connecting parts 110 are kept pressed against both ends of the slot 430 along its length, which strengthens the tight fit and stability between the connecting parts 110 and the slot 430. The anti-detachment part 120 presses down against the contact plate 200 to keep the contact plate 200 pressed against the placement surface 420, thereby ensuring that the thermostat is stable and reliable when used under high temperature conditions and has a long service life.
[0042] In some embodiments of this utility model, the sidewall of the connecting part 110 protrudes along the width direction of the cross-section of the slot 430 and is provided with a tightening part that abuts against the inner wall of the slot 430. It is understood that the cross-section of the slot 430 is generally rectangular. When the two connecting parts 110 form a tightening effect in the length direction of the slot 430, the connecting parts 110 are constrained to move along the width direction of the slot 430. However, when the pin 100 is subjected to a large external force, the connecting part 110 may still shift along the width direction of the slot 430. Therefore, this problem can be solved by providing a tightening part. The aforementioned rib 140 and bulge 150 are both types of tightening parts.
[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0044] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An electrical contact assembly, comprising: include: The device includes a pin (100) and a contact plate (200). The contact plate (200) has a through mounting hole (210). The upper end of the pin (100) is formed with a connecting part (110) that is inserted into and tightly fitted with the mounting hole (210). The upper end of the connecting part (110) is stamped with at least two anti-detachment parts (120) that are opposite to each other. The anti-detachment parts (120) can abut against the upper surface of the contact plate (200) to prevent the pin (100) from detaching downward from the contact plate (200).
2. The electrical contact assembly according to claim 1, characterized in that: The upper end face of the connecting part (110) is formed with a punching groove (130) and two anti-detachment parts (120) distributed on opposite sides of the punching groove (130). The anti-detachment parts (120) are inclined from bottom to top along mutually opposite directions to prevent the anti-detachment parts (120) from moving downward relative to the contact piece (200).
3. The contact assembly according to claim 2, characterized in that: The mounting hole (210) is a rectangular through hole, and the part of the connecting part (110) that passes through the rectangular through hole is a quadrangular prism that is in close contact with the inner peripheral wall of the rectangular through hole. The connecting part (110) is provided with a limiting platform part (111) below the quadrangular prism.
4. The contact assembly according to claim 1, characterized in that: The connecting part (110) is in the shape of a long strip plate arranged in the vertical direction. Two connecting parts (110) are provided at intervals on the upper end of the pin (100), and two mounting holes (210) are provided accordingly.
5. The contact assembly according to claim 4, characterized in that: The side wall of the connecting part (110) is provided with a protruding rib (140) or a protruding bulge (150).
6. The contact assembly according to claim 5, characterized in that: The pin (100) includes a vertical plate segment (101) and a horizontal plate segment (102) connected to the upper end of the vertical plate segment (101). The connecting part (110) is formed at the end of the horizontal plate segment (102) and extends upward. The upper surface of the horizontal plate segment (102) is provided with a protrusion (103). The rib (140) or the bulge (150) is formed on the side wall of the connecting part (110) opposite to the protrusion (103).
7. The electrical contact assembly according to claim 1, characterized in that: One side surface of the electrical contact piece (200) is provided with a horizontally placed "U"-shaped movable spring piece (300), and two rivet posts (220) protrude from one side surface of the electrical contact piece (200) and pass through one end of the movable spring piece (300).
8. A thermostat, characterized by It includes two contact assemblies according to any one of claims 1-6.
9. A thermostat according to claim 8, wherein, include: A ceramic housing (400) has a cavity (410) inside, and a placement plane (420) for placing the contact plate (200) is provided inside the cavity (410). A slot (430) is provided through the bottom of the housing (400), which passes upward through the placement plane (420) and communicates with the cavity (410). The slot (430) has a rectangular cross-section. Two connecting parts (110) are arranged at intervals and elastically abut against the two ends of the slot (430) in the length direction. Two mounting holes (210) drive the upper ends of the two connecting parts (110) to move away from each other so that the sides of the two connecting parts (110) are always abutted against the two ends of the slot (430) in the length direction.
10. A temperature controller according to claim 9, characterized in that: The sidewall of the connecting part (110) protrudes along the width direction of the cross-section of the slot (430) and is provided with a pressing part that abuts against the inner wall of the slot (430).