Electronic component structure

Abstract

The utility model belongs to the field of electronic components, and discloses an electronic component structure, which comprises a shell, a lead and a circuit board arranged in the shell, the lead penetrates through the end part of the first end of the shell, extends into the shell and is conductively connected with the circuit board, the end part of the second end of the shell is open, and the circuit board is arranged in the shell. A filling block fixed on the outer surfaces of the circuit board and the wire in a wrapping manner is arranged in the shell; the filling block is clamped with the shell along the circumferential direction of the shell; the filling block is fixedly connected with an end cover used for sealing the opening, the filling block is filled between the inner side face of the first end of the shell and the wire and abuts against the inner end face of the end portion of the first end of the shell, and a sealing ring arranged on the wire in a sleeving mode is clamped between the filling block and the inner end face of the end portion of the first end of the shell; according to the technical scheme, the situation that the overall sealing performance and shock resistance of the electronic component are affected due to the fact that the shrinkage rate of filling materials in the electronic component is large is avoided.

Description

Technical Field

[0001] The utility model relates to the field of electronic components, in particular to an electronic component structure. Background Art

[0002] In today's electric age, circuits exist in various usage scenarios, and electronic components are the basic elements that constitute circuits. In order to extend the service life of circuits in scenarios with harsh environmental factors such as vibration impact, gas erosion and fluid infiltration, it is necessary to select electronic components with relatively good sealing and shock resistance. Electronic components are often filled with non-environmentally friendly materials such as epoxy resin and PU potting glue to fix the components in the outer casing and seal the gaps on the outer casing, so that the electronic components have excellent sealing, insulation and shock resistance. However, the above materials have the disadvantages of long curing time and non-recyclability. In particular, the material needs to use auxiliary materials such as adhesives during the production process. The process is complicated and will produce industrial waste, consuming a lot of energy and resources.

[0003] At present, in order to improve the environmental protection and processing efficiency of electronic components, environmentally friendly materials such as hot melt adhesives are used to replace non-environmentally friendly materials. However, the shrinkage rate of most environmentally friendly materials is relatively large, so that the volume of the environmentally friendly materials shrinks after curing inside the electronic components, and cannot block the gaps on the outer shell, affecting the sealing of the electronic components. It is also impossible to fix the connection with the inner side of the outer shell. The gap left between the environmentally friendly materials and the outer shell makes it impossible for other parts in the electronic components to be relatively fixed to the outer shell through the environmentally friendly materials. When the electronic components are subjected to impact and vibration, the internal parts are prone to shaking, and even easily collide with the outer shell, causing damage to the parts and poor shock resistance. Utility Model Content

[0004] The utility model aims to provide an electronic component structure, which can prevent the electronic component from having a large shrinkage rate of its internal filling material affecting the overall sealing and shock resistance.

[0005] The technical solution provided by the utility model is: an electronic component structure, comprising a shell, a wire and a circuit board arranged inside the shell, the wire passes through the end of the first end of the shell, extends to the inside of the shell and is conductively connected to the circuit board, the end of the second end of the shell is open, a filling block is fixed on the outer surfaces of the circuit board and the wire in a wrapped manner inside the shell, and the filling block is clamped with the shell along the circumference of the shell;

[0006] An end cover for closing the opening is fixedly connected to the filling block, a first end of the end cover is located inside the filling block, and a second end of the end cover is disposed outside the shell and fixedly connected to an edge of the opening;

[0007] The filling block is filled between the inner side surface of the first end of the shell and the wire, and abuts against the inner end surface of the end portion of the first end of the shell. A sealing ring sleeved on the wire is sandwiched between the filling block and the inner end surface of the end portion of the first end of the shell. The sealing ring is fixedly connected to the filling block, the wire and the inner end surface of the end portion of the first end of the shell, respectively.

[0008] In the above-mentioned electronic component structure, an end cap located outside the housing is provided on the second end of the end cover, and the end cap is fixedly connected to the edge of the opening.

[0009] In the above-mentioned electronic component structure, the end cover is a hollow structure, the end of the first end of the end cover is open to form an opening, one side of the circuit board passes through the opening and is arranged in the end cover, and the filling block extends between the circuit board and the inner surface of the end cover, the outer surface of the end cover and the inner side surface of the outer shell, and is fixedly connected to the inner and outer surfaces of the end cover.

[0010] In the above-mentioned electronic component structure, the outer diameter of the first end of the end cover is smaller than the outer diameter of the second end, and a shoulder is formed at the intersection of the first end and the second end of the end cover. The filling block extends to the outer surface of the first end of the end cover and the shoulder, and is fixedly connected to the outer surface of the first end of the end cover and the shoulder respectively, and the outer surface of the second end of the end cover abuts against the outer shell.

[0011] In the above-mentioned electronic component structure, the end cover is a plastic part; a groove located inside the shell is opened on the outer surface of the second end of the end cover, and the groove is arranged around the circumference of the end cover, and the depth of the groove matches the outer diameter of the first end of the end cover.

[0012] In the above-mentioned electronic component structure, a chamfer is provided at the intersection of the end portion of the first end of the end cover and the outer side surface of the end cover.

[0013] In the above-mentioned electronic component structure, a friction surface is provided on the outer surface of the first end of the end cover, and the filling block covers the friction surface and is fixedly connected to the friction surface.

[0014] In the above-mentioned electronic component structure, a pair of card slots are opened on the inner side surface of the shell, one end of the card slot is a closed end, and the other end extends to the open position and is openly arranged to form an open end, and the filling block is provided with a card strip corresponding to the pair of card slots one by one, and the card strip is clamped in the corresponding card slot.

[0015] In the above-mentioned electronic component structure, a light-transmitting portion penetrating both inner and outer sides is provided on the first end of the housing, and the inner surface of the light-transmitting portion abuts against the filling block.

[0016] In the above-mentioned electronic component structure, the light-transmitting portion extends along the inner side surface of the shell to between the end of the first end of the shell and the wire, and forms a light-transmitting extension portion between the end of the first end of the shell and the wire, and the sealing ring is clamped between the filling block and the light-transmitting extension portion, and is fixedly connected to the filling block and the light-transmitting extension portion respectively.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects:

[0018] The shell in the technical solution is provided with open structures at both ends, the open structure at the first end is for the wire to pass through, and the open structure (i.e., the opening) at the second end is used to load the circuit board and the wire into the shell, and the open structure at the second end is closed by an end cover, and the filling block wraps the circuit board and the wire, and the end cover is fixed to the side of the circuit board away from the wire. After the filling block and the circuit board and the wire wrapped by it are loaded into the shell together, the end cover and the edge of the opening of the shell are fixedly connected by hot melting, gluing, etc., and the open structure at the first end is auxiliary sealed by a sealing ring, and the filling block is pressed against the inner side surface of the end of the first end of the shell, and the wire on the end is sealed. The sealing ring is pressed against the inner side surface of the end portion of the first end of the shell, and the filling block, the sealing ring and the shell are fixedly connected to each other by gluing, hot melting or the like, so that the electronic component as a whole has relatively excellent sealing performance, and the filling block installed in the shell is snap-fitted to the shell, so that the circuit board is relatively fixed to the shell in the radial and circumferential directions of the shell, thereby preventing the circuit board from shaking in the shell, preventing the circuit board from being damaged due to collision with the shell, improving the shock resistance of the electronic components, and at the same time preventing the filling block and the shell from rotating relative to each other, which may affect the sealing performance of the two ends of the shell, thereby preventing the electronic components from being affected by the large shrinkage rate of the internal filling material and affecting the overall sealing performance and shock resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the electronic component sealing structure of Example 1 of the utility model;

[0020] Figure 2 It is a half-section schematic diagram of the electronic component sealing structure of Example 1 of the utility model;

[0021] Figure 3 The utility model Figure 1 A partial enlarged view of A;

[0022] Figure 4 The utility model Figure 1A partial enlarged view of B;

[0023] Figure 5 The utility model Figure 1 CC section view;

[0024] Figure 6 The utility model Figure 1 DD cross-sectional view.

[0025] Reference numerals: 1, housing; 2, wire; 3, end cap; 4, filling block; 5, circuit board; 6, sealing ring;

[0026] 11. Connecting thread; 12. Light-transmitting portion; 13. Light-transmitting extension portion; 14. Card slot;

[0027] 31. End cap; 32. Groove; 33. Chamfer; 34. Friction surface; 35. Shoulder; 41. Clip. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods, but does not constitute any limitation to the present invention.

[0029] Embodiment 1:

[0030] like Figure 1-6 As shown, the electronic component sealing structure includes a housing 1, a wire 2 and a circuit board 5 arranged inside the housing 1, the wire 2 passes through the end of the first end of the housing 1, and extends to the inside of the housing 1 and is conductively connected to the circuit board 5, the end of the second end of the housing 1 is open, and a filling block 4 is fixed on the outer surfaces of both the circuit board 5 and the wire 2 in a wrapped manner inside the housing 1, and the filling block 4 is clamped with the housing 1 along the circumference of the housing 1;

[0031] An end cover 3 for closing the opening is fixedly connected to the filling block 4, a first end of the end cover 3 is located inside the filling block 4, and a second end of the end cover 3 is arranged outside the housing 1 and fixedly connected to the edge of the opening;

[0032] The filling block 4 is filled between the inner side surface of the first end of the shell 1 and the wire 2, and abuts against the inner end surface of the end of the first end of the shell 1. A sealing ring 6 sleeved on the wire 2 is sandwiched between the filling block 4 and the inner end surface of the end of the first end of the shell 1. The sealing ring 6 is fixedly connected to the filling block 4, the wire 2 and the inner end surface of the end of the first end of the shell 1 respectively.

[0033] Its working principle is that both ends of the shell 1 are provided with open structures, the open structure of the first end is for the wire 2 to pass through, and the open structure (i.e., the open mouth) of the second end is used to install the circuit board 5 and the wire 2 into the shell 1, and the open structure of the second end is closed by the end cover 3, and the filling block 4 wraps the circuit board 5 and the wire 2, and the end cover 3 is fixed to the side of the circuit board 5 away from the wire 2. After the filling block 4 and the circuit board 5 and the wire 2 wrapped by it are installed into the shell 1 together, the end cover 3 is fixedly connected to the edge of the open mouth of the shell 1 by hot melting, gluing, etc., and the open structure of the first end is auxiliary sealed by the sealing ring 6, and the filling block 4 is pressed against the inner side surface of the end of the first end of the shell 1, and the wire 2 is The sealing ring 6 on the outer shell 1 is pressed against the inner side surface of the end of the first end of the outer shell 1, and the filling block 4, the sealing ring 6 and the outer shell 1 are fixedly connected to each other by gluing, hot melting or the like, so that the electronic component as a whole has relatively excellent sealing performance, and the filling block 4 installed in the outer shell 1 is connected with the outer shell 1 by a snap connection, so that the circuit board 5 is relatively fixed to the outer shell 1 in the radial and circumferential directions of the outer shell 1, so as to avoid the circuit board 5 from shaking in the outer shell 1 and preventing the circuit board 5 from being damaged due to collision with the outer shell 1, thereby improving the shock resistance of the electronic components and preventing the filling block 4 from rotating relative to the outer shell 1, thereby preventing the sealing of the two ends of the outer shell 1 from being affected, so as to achieve the electronic components avoiding the overall sealing and shock resistance being affected by the large shrinkage rate of the filling material inside the electronic components.

[0034] During the processing and forming, the molten filling block 4 simultaneously wraps the first end of the end cap 3, the circuit board 5 and the wire 2. After the filling block 4 is fixed, the end cap 3, the circuit board 5 and the wire 2 are relatively fixed in sequence.

[0035] like Figure 3 As shown, in this embodiment, an end cap 31 located outside the housing 1 is provided on the second end of the end cover 3, and the end cap 31 is fixedly connected to the edge of the opening.

[0036] In specific implementation, the outer diameter of the end cap 31 is larger than the diameter of the open hole. Preferably, the outer diameter of the end cap 31 is equal to the outer diameter of the shell 1, that is, the contact area with the second end of the shell 1 is increased to avoid extending beyond the outer surface of the shell 1 to form a jamming position. In the absence of a jamming position, the fulcrum for prying the end cap 31 is lost, making the end cap 31 not easily disturbed by external forces, and the connection is tighter and more secure, with better sealing.

[0037] like Figure 3 As shown, the end cover 3 is further improved to be a hollow structure, the end of the first end of the end cover 3 is open to form an opening, one side of the circuit board 5 passes through the opening and is arranged in the end cover 3, and the filling block 4 extends to between the circuit board 5 and the inner surface of the end cover 3, the outer surface of the end cover 3 and the inner side surface of the shell 1, and is fixedly connected to the inner and outer surfaces of the end cover 3.

[0038] In a specific application, one side of the circuit board 5 is arranged inside the end cover 3, and the filling block 4 extends to the inside of the end cover 3 and is filled between the circuit board 5 and the inner surface of the end cover 3, so that the distance between the end cover 3 and the wire 2 is reduced, the space utilization rate in the housing 1 is improved, the volume of the electronic components is reduced, and at the same time the contact area between the filling block 4 and the end cover 3 is increased, the connection strength is enhanced, and the connection is more secure.

[0039] like Figure 3 As shown, another improvement is that the outer diameter of the first end of the end cover 3 is smaller than the outer diameter of the second end, and a shoulder 35 is formed at the intersection of the first end and the second end of the end cover 3. The filling block 4 extends to the outer side surface of the first end of the end cover 3 and the shoulder 35, and is fixedly connected to the outer side surface of the first end of the end cover 3 and the shoulder 35 respectively, and the outer side surface of the second end of the end cover 3 abuts against the outer shell 1.

[0040] After optimizing the structure of the end cover 3 in this embodiment, the end cover 3 is fixedly connected to the inside of the filling block 4 through its first end, and the outer side surface of the second end is abutted against the inner side surface of the outer shell 1, so that the end cover 3 is relatively fixed to the outer shell 1 along the radial direction of the outer shell 1, and the second end of the end cover 3 plays a positioning role in the outer shell 1.

[0041] like Figure 3 As shown, preferably, the end cover 3 is a plastic part; a groove 32 located inside the shell 1 is provided on the outer surface of the second end of the end cover 3, and the groove 32 is arranged around the circumference of the end cover 3, and the depth of the groove 32 matches the outer diameter of the first end of the end cover 3.

[0042] In the specific processing, the end cover 3 of the plastic part is injection molded, and the first end and the second end of the end cover 3 have different outer diameters and the same inner diameter, resulting in different thicknesses at the two ends of the end cover 3. In this embodiment, a groove 32 is opened on the outer surface of the second end of the end cover 3 to reduce the glue and hollow it out, thereby controlling the relative thickness of the second end and the first end, thereby reducing the deformation of the injection molding, improving the processing accuracy, and improving the assembly accuracy of the end cover 3 and the shell 1, thereby enhancing the sealing at the second end of the shell 1.

[0043] like Figure 3 As shown, in another preferred embodiment, a chamfer 33 is provided at the junction between the end of the first end of the end cover 3 and the outer side surface of the end cover 3 .

[0044] The chamfer 33 is provided to facilitate the filling block 4 in a molten state to flow to the shoulder 35 of the end cover 3 and the outer surface of the first end of the end cover 3 .

[0045] like Figure 3 As shown, a further improvement of this embodiment is that a friction surface 34 is provided on the outer surface of the first end of the end cover 3 , and the filling block 4 covers the friction surface 34 and is fixedly connected to the friction surface 34 .

[0046] The provision of the friction surface 34 increases the contact area and friction force between the first end of the end cover 3 and the filling block 4. The friction surface 34 can be either hemp texture, or etched texture, or other concave-convex textures, and this embodiment does not impose too many restrictions on this.

[0047] like Figure 6 As shown, the specific connection between the filling block 4 and the shell 1 is that a pair of card slots 14 are opened on the inner side surface of the shell 1, one end of the card slot 14 is a closed end, and the other end extends to an open position and is openly arranged to form an open end, and the filling block 4 is provided with a card strip 41 corresponding to the pair of card slots 14 one by one, and the card strip 41 is clamped in the corresponding card slot 14.

[0048] The clamping strip 41 on the filling block 4 is a strip-shaped clamping structure, which is clamped in the clamping slot 14 of the shell 1. The volume of the strip-shaped clamping strip 41 on the filling block 4 accounts for a relatively small proportion, so that the clamping strip 41 has a smaller effect on the overall molding shrinkage rate of the filling block 4, thereby avoiding a large shrinkage of the filling block 4 caused by adopting other relatively complex clamping structures with a large volume proportion.

[0049] like Figure 4 As shown, in another improvement of the embodiment, a light-transmitting portion 12 penetrating both inner and outer sides is provided on the first end of the housing 1 , and the inner surface of the light-transmitting portion 12 abuts against the filling block 4 .

[0050] When a light-emitting component is provided on the circuit board 5, the filling block 4 guides the light emitted by the light-emitting component to propagate to the first end of the housing 1, and propagates to the outside of the housing 1 through the light-transmitting portion 12, so that the user can observe the use status of the electronic components, the transmission signal and other information through naked eye.

[0051] In actual use, more than two light-transmitting portions 12 may be provided, and this embodiment does not impose too many restrictions on this.

[0052] like Figure 4 As shown, as a further improvement of the present embodiment, the light-transmitting portion 12 extends along the inner side surface of the housing 1 to between the end of the first end of the housing 1 and the wire 2, and a light-transmitting extension portion 13 is formed between the end of the first end of the housing 1 and the wire 2, and the sealing ring 6 is sandwiched between the filling block 4 and the light-transmitting extension portion 13, and is fixedly connected to the filling block 4 and the light-transmitting extension portion 13 respectively.

[0053] In a specific application, the light-transmitting extension portion 13 is cylindrical, and the filling block 4 and the wire 2 are sleeved in the light-transmitting extension portion 13. The setting of the light-transmitting extension portion 13 makes the end of the first end of the shell 1 also have a light-transmitting structure, so that the user can obtain relevant information from different angles of the electronic components, thereby improving the convenience of use.

[0054] In this embodiment, the filling block 4 is a hot melt adhesive block. In addition to hot melt adhesive, other light-guiding materials can also be used. In addition, the outer shell 1 is made of a mixture of nylon and glass fiber to provide strength to the outer shell 1 itself, and the light-transmitting portion 12 and the outer shell 1 are integrally formed by two-color injection molding. This embodiment does not impose too many restrictions on the materials of the outer shell 1 and the light-transmitting portion 12.

[0055] In some embodiments, when there are more than two light-transmitting portions 12 , the light-transmitting extending portion 13 is formed by the common extension of all the light-transmitting portions 12 .

[0056] like Figure 5 As shown, in this embodiment, in addition to the long straight line arrangement of the edge of the circuit board 5, protrusions, grooves and other structures can also be arranged on the edge to enhance the connection strength between the circuit board 5 and the filling block 4. This embodiment does not impose too many restrictions on the outer contour structure of the circuit board.

[0057] In addition, the outer surface of the housing 1 is provided with a connecting thread 11 .

Claims

1. An electronic component structure, comprising a housing, a wire and a circuit board arranged inside the housing, wherein the wire passes through the end of a first end of the housing, extends to the inside of the housing and is conductively connected to the circuit board, and the end of a second end of the housing is open, characterized in that: A filling block is provided in the shell and fixed on the outer surfaces of the circuit board and the wire in a wrapped manner, and the filling block is clamped with the shell along the circumference of the shell; An end cover for closing the opening is fixedly connected to the filling block, a first end of the end cover is located inside the filling block, and a second end of the end cover is disposed outside the shell and fixedly connected to an edge of the opening; The filling block is filled between the inner side surface of the first end of the shell and the wire, and abuts against the inner end surface of the end portion of the first end of the shell. A sealing ring sleeved on the wire is sandwiched between the filling block and the inner end surface of the end portion of the first end of the shell. The sealing ring is fixedly connected to the filling block, the wire and the inner end surface of the end portion of the first end of the shell, respectively.

2. The electronic component structure according to claim 1, characterized in that: An end cap located outside the shell is provided on the second end of the end cover, and the end cap is fixedly connected to the edge of the opening.

3. The electronic component structure according to claim 1, characterized in that: The end cover is a hollow structure, and the end of the first end of the end cover is open to form an opening, one side of the circuit board passes through the opening and is arranged in the end cover, and the filling block extends between the circuit board and the inner surface of the end cover, the outer surface of the end cover and the inner side surface of the shell, and is fixedly connected to the inner and outer surfaces of the end cover.

4. The electronic component structure according to any one of claims 1 to 3, characterized in that: The outer diameter of the first end of the end cover is smaller than the outer diameter of the second end, and a shoulder is formed at the intersection of the first end and the second end of the end cover. The filling block extends to the outer side surface of the first end of the end cover and the shoulder, and is fixedly connected to the outer side surface of the first end of the end cover and the shoulder respectively, and the outer side surface of the second end of the end cover abuts against the outer shell.

5. The electronic component structure according to claim 4, characterized in that: The end cover is a plastic part; a groove located inside the shell is formed on the outer surface of the second end of the end cover, the groove is arranged around the circumference of the end cover, and the depth of the groove matches the outer diameter of the first end of the end cover.

6. The electronic component structure according to claim 4, characterized in that: A chamfer is provided at the intersection of the end portion of the first end of the end cover and the outer side surface of the end cover.

7. The electronic component structure according to any one of claims 1 to 3, characterized in that: A friction surface is provided on the outer side surface of the first end of the end cover, and the filling block covers the friction surface and is fixedly connected to the friction surface.

8. The electronic component structure according to any one of claims 1 to 3, characterized in that: A pair of card slots are provided on the inner side surface of the shell, one end of the card slot is a closed end, and the other end extends to the open position and is openly arranged to form an open end. The filling block is provided with card strips corresponding to the pair of card slots one by one, and the card strips are clamped in the corresponding card slots.

9. The electronic component structure according to any one of claims 1 to 3, characterized in that: A light-transmitting portion penetrating both inner and outer sides is disposed on the first end of the shell, and the inner surface of the light-transmitting portion abuts against the filling block.

10. The electronic component structure according to claim 9, characterized in that: The light-transmitting portion extends along the inner side surface of the shell to between the end of the first end of the shell and the wire, and forms a light-transmitting extension portion between the end of the first end of the shell and the wire. The sealing ring is sandwiched between the filling block and the light-transmitting extension portion, and is fixedly connected to the filling block and the light-transmitting extension portion respectively.

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