A coil assembly of an electromagnetic drive assembly and an electromagnetic drive assembly

Abstract

The application discloses a coil assembly of an electromagnetic driving assembly and the electromagnetic driving assembly, wherein the coil assembly comprises a coil body, a lead component, a thermal protector and a lock cover component, the lock cover component is installed on the coil body, the lock cover component covers the thermal protector and compresses the lead of the lead component connected with the thermal protector. With the structure, the lock cover component can cover the thermal protector and protect the thermal protector, and the lock cover component can also compress the lead connected with the thermal protector, so that when the lead connected with the thermal protector is pulled by external force during assembly and use, the external force can be transmitted to the coil body through the lock cover component, thereby reducing the pulling force on the connection between the lead and the thermal protector, and the reliability of the connection of the thermal protector is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic drive, in particular to an electromagnetic drive assembly and a coil assembly thereof. BACKGROUND

[0002] At present, intelligent refrigerators and other intelligent household appliances generally have an automatic door opening function. The automatic door opening function is realized by using an electromagnetic drive assembly in the form of a door opening electromagnet, which includes a coil assembly and a push rod assembly. The coil assembly further includes a coil body and a lead component electrically connected to the coil body, and a thermal protector is further arranged between the lead component and the coil body. During assembly and use of the electromagnetic drive assembly, the lead component may be subjected to external force, thereby affecting the connection reliability of the thermal protector. SUMMARY

[0003] The purpose of the present application is to provide a coil assembly of an electromagnetic drive assembly and an electromagnetic drive assembly, wherein the connection reliability of the thermal protector of the coil assembly is higher.

[0004] To solve the above technical problems, the present application provides a coil assembly of an electromagnetic drive assembly, which includes a coil body, a lead component, a thermal protector and a lock cover component. The lock cover component is installed on the coil body, covers the thermal protector from above and compresses the lead of the lead component connected to the thermal protector.

[0005] With this structure, the lock cover component can cover the thermal protector from above, thereby protecting the thermal protector. Meanwhile, the lock cover component can also compress the lead connected to the thermal protector. In this way, once the lead connected to the thermal protector is subjected to external force during assembly and use, the external force can be transmitted to the coil body through the lock cover component, thereby reducing the pulling force on the connection between the lead and the thermal protector, which is of positive significance to ensuring the connection reliability of the thermal protector.

[0006] The present application also provides an electromagnetic drive assembly, which includes a coil assembly and a push rod assembly. The coil assembly is the coil assembly of the electromagnetic drive assembly described above. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 Structure schematic diagram of a specific embodiment of the electromagnetic drive assembly provided by the present application;

[0008] Figure 2 Exploded view of the coil assembly of the electromagnetic drive assembly provided by the present application;

[0009] Figure 3 Connection structure diagram of the coil body and the lead component;

[0010] Figure 4This is a schematic diagram of the locking piece.

[0011] Figure 5 for Figure 4 The front view;

[0012] Figure 6 This is a schematic diagram of the casing structure;

[0013] Figure 7 This is a cross-sectional view of the housing at the clearance groove used to press the lead wire connected to the thermal protector.

[0014] Figures 1-7 The annotations in the accompanying drawings are explained as follows:

[0015] 1. Coil assembly, 11. Coil body, 111. Alignment part, 112. Slot part, 12. Lead wire component, 121. Lead wire, 13. Thermal protector, 14. Locking cover component, 141. Locking piece, 141a. Alignment part, 141b. Positioning part, 141c. First beveled part, 141d. Rib, 142. Cover, 142a. Insertion part, 142b. Positioning part, 142c. Second beveled part, 142d. Wire avoidance groove;

[0016] 2. Magnet conductor assembly;

[0017] 3. Push rod assembly. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The term "several" as used in this article refers to a number of uncertain quantities, usually two or more; and when "several" is used to indicate the quantity of certain components, it does not indicate the quantitative relationship between these components.

[0020] The terms "first" and "second" used in this article are used only for the convenience of describing two or more structures or components that are identical or similar in structure and / or function, and do not indicate any special limitation on order and / or importance.

[0021] Please refer to Figures 1-7 , Figure 1 This is a schematic diagram of a specific embodiment of the electromagnetic drive assembly provided by the present invention. Figure 2 This is an exploded view of the coil assembly of the electromagnetic drive assembly provided by the present invention. Figure 3 This is a diagram showing the connection structure between the coil body and the lead wire assembly. Figure 4 This is a schematic diagram of the locking piece. Figure 5 for Figure 4 Front view, Figure 6 This is a schematic diagram of the casing structure. Figure 7A cross-sectional view of the housing at the relief groove for compressing the lead wire connected with the thermal protector.

[0022] As shown in Figure 1 , Figure 2 , the electromagnetic drive assembly in the form of a door opening electromagnet generally can include a coil assembly 1, a magnetic conductor assembly 2 and a push rod assembly 3, in operation, the coil assembly 1 can drive the push rod of the push rod assembly 3 to displace along the axial direction to output the driving force required for opening or closing the door.

[0023] The coil assembly 1 includes a coil body 11, a lead wire component 12 and a thermal protector 13, wherein the lead wire component 12 can include a plurality of lead wires 121. Herein, the number of the lead wires 121 is not limited by the embodiments of the present application, generally, the number of the lead wires 121 is two, and one of the lead wires 121 is connected with the coil body 11 through the thermal protector 13, for the convenience of description, the lead wire 121 can be referred to as a lead wire to be processed.

[0024] For the thermal protector 13, the tin soldering connection is generally adopted between the thermal protector 13 and the tab of the coil body 11, the end connected with the coil body is considered to be in a fixed state, and the thermal protector 13 and the lead wire to be processed are generally connected by terminal riveting, the end of the thermal protector is in an unfixed state, in the subsequent assembly and use of the electromagnetic drive assembly, the lead wire to be processed can be pulled by external force, so that the fuse inside the thermal protector can be under stress, the connection reliability is reduced, and in severe cases, the internal disconnection of the thermal protector can be caused, thereby causing the product failure.

[0025] Therefore, in the coil assembly 1 of the electromagnetic drive assembly provided by the embodiments of the present application, a lock cover component 14 is further included, the lock cover component 14 is installed on the coil body 11, the lock cover component 14 covers the thermal protector 13 from above, and can compress the lead wire 121 (i.e. the aforementioned lead wire to be processed) of the lead wire component 12 connected with the thermal protector 13.

[0026] By adopting this structure, the lock cover component 14 can cover the thermal protector 13 from above to form protection for the thermal protector 13, and the lock cover component 14 can also compress the lead wire 121 connected with the thermal protector 13, so that once the lead wire to be processed is pulled by external force during assembly and use, the external force can be transmitted to the coil body 11 through the lock cover component 14, thereby reducing the pulling of the lead wire to be processed and the thermal protector 13, which has a positive significance for ensuring the connection reliability of the thermal protector 13.

[0027] The lock cover component 14 can be a one-piece structure or a split structure, in actual application, the person skilled in the art can set it according to specific needs, as long as the aforementioned technical effects can be met.

[0028] In one specific embodiment, the lock cover component 14 can include a locking piece 141, which can be provided with a positioning portion 141a, and the coil body 11 can be provided with a positioning matching portion 111, the positioning portion 141a can be inserted into the positioning matching portion 111 in the radial direction to positionally assemble the locking piece 141 and the coil body 11, and the locking piece 141 can contact the lead wire 121 connected with the thermal protector 13; a cover shell 142, which can be mounted on the coil body 11 and can press the locking piece 141 to press the lead wire 121 connected with the thermal protector 13 through the locking piece 141, and at least one of the cover shell 142 and the locking piece 141 can cover the thermal protector 13.

[0029] In the installation, first, the positioning assembly of the locking piece 141 and the coil body 11 is ensured through the cooperation of the positioning portion 141a and the positioning matching portion 111, and the positioning assembly is in the radial direction of the coil body 11, and in the assembly process, the locking piece 141 can be in contact with the lead wire to be processed in the radial direction, and basically no pulling force in the axial direction of the coil body 11 is generated at the connection between the lead wire to be processed and the thermal protector 13; then, the locking piece 141 can be pressed through the installation of the cover shell 142, and then the lead wire to be processed is pressed through the locking piece 141, and in this process, the cover shell 142 does not directly contact the lead wire to be processed, and the installation of the cover shell 142 also does not easily generate pulling at the connection between the lead wire to be processed and the thermal protector 13, so that the installation process of the lock cover component 14 can greatly avoid affecting the reliability of the connection between the lead wire to be processed and the thermal protector 13.

[0030] The structure of the positioning portion 141a and the positioning matching portion 111 can have many choices, as long as the technical purpose of the positioning assembly of the locking piece 141 and the coil body 11 in the radial direction can be met.

[0031] In the embodiment of the drawings, as shown in Figure 3 , Figure 4 The positioning portion 141a can be an L-shaped clamping block, the positioning matching portion 111 can be a clamping groove matched with the clamping block, and the clamping block can be inserted into the clamping groove in the radial direction to realize the positioning assembly of the locking piece 141 and the coil body 11. Here, the matching refers to the basic consistency of the shape and size, so that after the positioning portion 141a is inserted into the positioning matching portion 111, the locking piece 141 and the coil body 11 can be connected in the direction other than the radial direction.

[0032] In fact, besides the L-shaped structure, the clamping block and the clamping groove can also be set in various forms such as T-shaped, X-shaped, Y-shaped, etc., or the positioning matching part 111 can not be a clamping groove structure, but a stop structure formed by a plurality of baffles, which can also play a similar role. In addition, the structure of the positioning part 141a and the positioning matching part 111 can be transposed, that is, the positioning part 141a can be set as a clamping groove, and the positioning matching part 111 can be set as a clamping block, which will not affect the positioning and assembly between the two.

[0033] The mounting direction of the cover shell 142 can also be radial. At this time, the cover shell 142 can be fixed by cooperating with a certain number of connecting pieces, or can be connected and fixed by bonding, welding and other connection methods, or can be provided with an axially extending insertion groove 112 on the coil body 11. Then, the cover shell 142 can be clamped into the two insertion grooves 112 on both sides of the cover shell 142 (the circumference of the coil body 11) by relying on the elasticity of the cover shell 142 itself.

[0034] In the embodiment of the drawings, the mounting direction of the cover shell 142 is axial, the coil body 11 can be provided with an axially extending insertion groove 112, and the cover shell 142 can be provided with an insertion part 142a which can be inserted into the insertion groove 112 in the axial direction, thereby completing the assembly of the cover shell 142. The insertion part 142a can be two side parts of the cover shell 142 in the circumferential direction of the coil body 11, or can be an insertion plate or an insertion block provided on both sides of the cover shell 142 in the circumferential direction.

[0035] It should be noted that the insertion and cooperation of the cover shell 142 and the coil body 11 in the axial direction can also be that the cover shell 142 is provided with the aforementioned insertion groove 112, and the coil body 11 is provided with the aforementioned insertion part 142a, which does not affect the function of the insertion assembly.

[0036] Further, the locking piece 141 can be provided with a positioning part 141b, and the cover shell 142 can be provided with a positioning matching part 142b, and the positioning part 141b can be clamped into the positioning matching part 142b to limit the axial insertion position of the cover shell 142 relative to the coil body 11.

[0037] Specifically, one of the positioning part 141b and the positioning matching part 142b can be a protruding member, and the other can be a recessed member. When the cover shell 142 is inserted so that the protruding member is inserted into the recessed member, a stop cooperation can be formed to block the further insertion of the cover shell 142, and the insertion assembly of the cover shell 142 is in place. In the embodiment of the drawings, Figures 5-7 , the protruding member is the positioning part 141b, and the recessed member is the positioning matching part 142b.

[0038] In fact, the axial insertion position of the cover 142 can also be defined by the cooperation of the cover 142 and the coil body 11, that is, the aforementioned positioning portion 141b can also be arranged on the coil body 11.

[0039] In combination Figure 5 and Figure 7 , a partial position of the upper surface of the locking piece 141 can be provided with a first inclined surface portion 141c gradually inclined to the outside (the direction relatively far away from the axial center of the coil body 11 is the outside) in the insertion direction (the radial direction of the coil body 11), and a partial position of the lower surface of the cover 142 can be provided with a second inclined surface portion 142c matched with the first inclined surface portion 141c, so that when the cover 142 is assembled, the second inclined surface portion 142c can press the first inclined surface portion 141c, so that the locking piece 141 generates a pressing force in the radial direction to the inside (the direction relatively close to the axial center of the coil body 11 is the inside), so as to gradually press the lead to be processed through the locking piece 141, thereby avoiding displacement of the lead to be processed as much as possible during the insertion of the cover 142.

[0040] A protruding rib 141d can be arranged on the lower surface of the locking piece 141, and the locking piece 141 can press the lead 121 connected with the thermal protector 13 through the protruding rib 141d, so that the pressing force is stronger and the reliability of the pressing is higher.

[0041] In detail, the part of the protruding rib 141d in contact with the lead 121 can be matched with the shape of the lead 121, as shown in Figure 4 , that is, the part of the protruding rib 141d in contact with the lead 121 can be approximately arc-shaped, so that multiple parts of the lead 121 in the circumferential direction can be subjected to the pressing force, and the locking piece 141 is more reliable for pressing the lead to be processed.

[0042] As described above, the lead assembly 12 can include a plurality of leads 121, one of which is connected with the thermal protector 13, and the cover 142 can be provided with lead avoiding grooves 142d consistent with the number of leads 121, and the locking piece 141 actually presses through the groove wall of the lead avoiding groove 142d for avoiding the lead 121 connected with the thermal protector 13.

[0043] That is, the aforementioned second inclined surface portion 142c and the positioning and cooperating portion 142b are both arranged on the groove wall of the lead avoiding groove 142d for avoiding the lead to be processed.

[0044] As shown in Figure 1 , the application also provides an electromagnetic drive assembly, which includes a coil assembly 1, a push rod assembly 3 and a magnetic conductor assembly 2, wherein the coil assembly 1 is the coil assembly of the electromagnetic drive assembly involved in the above-mentioned embodiments.

[0045] Since the coil assembly of the electromagnetic drive assembly has the above technical effects, the electromagnetic drive assembly with the coil assembly also has similar technical effects, and thus will not be described herein.

[0046] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A coil assembly of an electromagnetic drive assembly, comprising a coil body (11), lead wire components (12), and a thermal protector (13), characterized in that, It also includes a locking cover component (14), which is mounted on the coil body (11), the locking cover component (14) covering the thermal protector (13) and pressing the lead wire (121) of the lead wire component (12) connected to the thermal protector (13); the locking cover component (14) includes: A locking piece (141) is provided with an alignment part (141a), and the coil body (11) is provided with an alignment mating part (111). The alignment part (141a) can be inserted radially into the alignment mating part (111) to align and assemble the locking piece (141) and the coil body (11). The locking piece (141) can contact the lead wire (121) connected to the thermal protector (13). A housing (142) is mounted on the coil body (11) and is capable of pressing the locking piece (141) to press the lead (121) connected to the thermal protector (13) by means of the locking piece (141). At least one of the housing (142) and the locking piece (141) is capable of shielding the thermal protector (13). The coil body (11) is provided with a slot (112) extending along the axial direction, and the cover (142) is provided with a plug (142a) that can be inserted into the slot (112). The upper surface of the locking piece (141) is provided with a first inclined portion (141c) that gradually slopes outward along the insertion direction. The lower surface of the cover (142) is provided with a second inclined portion (142c) that matches the first inclined portion (141c). The second inclined portion (142c) can press against the first inclined portion (141c). The lower surface of the locking piece (141) is provided with a rib (141d). The locking piece (141) presses against the lead wire (121) connected to the thermal protector (13) through the rib (141d).

2. The coil assembly of the electromagnetic drive assembly according to claim 1, characterized in that, The locking piece (141) is provided with a positioning part (141b), and the cover (142) is provided with a positioning mating part (142b). The positioning part (141b) can be engaged with the positioning mating part (142b) to limit the axial insertion position of the cover (142) relative to the coil body (11).

3. The coil assembly of the electromagnetic drive assembly according to claim 1, characterized in that, The portion of the rib (141d) that contacts the lead wire (121) matches the shape of the lead wire (121).

4. The coil assembly of the electromagnetic drive assembly according to any one of claims 1-3, characterized in that, The alignment part (141a) is an L-shaped card block, and the alignment mating part (111) is a card slot that matches the card block, and the card block can be inserted into the card slot.

5. The coil assembly of the electromagnetic drive assembly according to any one of claims 1-3, characterized in that, The lead wire component (12) includes a plurality of leads (121), one of which is connected to the thermal protector (13). The housing (142) is provided with a number of wire-avoiding grooves (142d) matching the number of leads (121). The locking piece (141) is pressed against the groove wall of the wire-avoiding groove (142d) for avoiding the lead wire (121) connected to the thermal protector (13).

6. An electromagnetic drive assembly, comprising a coil assembly (1) and a push rod assembly (3), characterized in that, The coil assembly (1) is the coil assembly of the electromagnetic drive assembly according to any one of claims 1-5.

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