A sealed terminal block and its manufacturing process

Abstract

This invention provides a sealed terminal block and its manufacturing process, comprising a terminal block cap, multiple terminal block pins, and multiple sealing glass beads. The sealing glass beads are fitted onto the surface of the terminal block pins. The top surface of the terminal block cap has multiple mounting holes, and the terminal block pins are connected to the sides of the sealing glass beads through these mounting holes. A pin connection unit is also included, with a pin connection unit installed at the end of each terminal block pin away from the terminal block cap. The pin connection unit is used to connect the terminal block pins to other electrical devices. This invention utilizes the pin connection unit to allow the terminal block pins to be connected to wires, circuit boards, and other electrical devices. The connection method is simple and convenient, improving the connection efficiency of the terminal block. Furthermore, the connection between the terminal block and wires, circuit boards, and other electrical devices is stable and not easily loosened, facilitating the connection and use of the terminal block.

Description

Technical Field

[0001] This invention relates to the field of terminal blocks, and more particularly to a sealed terminal block and its manufacturing process. Background Technology

[0002] Terminal blocks are accessories used to achieve electrical connections. Industrially, they fall under the category of connectors and play a crucial role in electrical connection systems. With increasing industrial automation and more stringent and precise industrial control requirements, the use of terminal blocks is gradually rising. As the electronics industry develops, the applications and types of terminal blocks are also expanding. The functions of terminal blocks include electrical connection, electrical isolation, and mechanical fixing. They are adaptable to various application scenarios. In industrial automation equipment, terminal blocks are used to connect sensors, actuators, and controllers; in power systems, they are used to connect cables, transformers, and switching equipment; and in communication equipment, they are used to connect signal lines and power lines.

[0003] The terminal blocks of a refrigerator compressor play a crucial role in electrical connections. Refrigerator compressor terminals are typically soldered using flexible soldering and then mounted on the casing. Depending on the number of poles, the leads can be single, two, three, or four. Sealed terminals consist of a cover, a terminal post, and a glass panel. The terminal post is an electrical component connecting the motor and power supply inside the compressor. In the Chinese utility model patent "Announcement No.: CN204232444U, Title: Terminal Block," the connection structure effectively ensures the reliability of the connection between the terminal block and related components. The reliability is achieved through a dual guarantee of threaded connection and elastic crimping. However, in the aforementioned application and existing technology, the pins are cylindrical, making the connection of electrical equipment such as wires extremely inconvenient. More operations are required to ensure the stability of the connection between the pin and the electrical equipment. The complex operation steps affect the connection efficiency of the terminal block connection and easily lead to low connection stability, making the connection between the terminal block and the electrical equipment prone to loosening, affecting the connection and use of the terminal block. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of existing terminals that are inconvenient to connect and have low connection stability, and to provide a sealed terminal and its manufacturing process.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This invention provides a sealing terminal block, including a terminal block cap, multiple terminal blocks pins, and multiple sealing glass beads. The sealing glass beads are sleeved on the surface of the terminal blocks pins. The top surface of the terminal block cap has multiple mounting holes, and the terminal blocks pins are connected to the side of the sealing glass beads through the mounting holes.

[0007] A pin connection unit is installed at the end of each of the terminal pins away from the terminal cap. The pin connection unit is used to connect the terminal pins to other electrical equipment.

[0008] In this technical solution, the pin connection unit enables the terminal pins to be connected to electrical equipment such as wires and circuit boards. The connection method is simple and easy to operate, which can improve the connection efficiency of the terminal. The connection between the terminal and electrical equipment such as wires and circuit boards is stable and not easy to loosen, which facilitates the connection and use of the terminal.

[0009] Preferably, the pin connection unit includes a side connection component, which includes a first connection plate and a second connection plate. The first connection plate and the second connection plate are symmetrically connected to the surface of the terminal pin. A plurality of locking protrusions are connected to the opposite side of the first connection plate and the second connection plate. A plurality of locking slots are opened on the surface of the terminal pin, and the locking protrusions are disposed in the locking slots.

[0010] The top of the terminal pin contacts the bottom of the support column, and the top of the support column is connected to the inner side of the first connecting plate and the second connecting plate respectively.

[0011] In this technical solution, the side connection component enables the terminal pins to be connected to electrical equipment such as wires and circuit boards.

[0012] Preferably, the pin connection unit further includes a clamping connection assembly, the clamping connection assembly including a lower surrounding plate, the lower surrounding plate being connected to the surface of the terminal pin;

[0013] The lower enclosure plate is connected to a vertical connecting plate at its top, and an upper mounting plate is connected to the top of the vertical connecting plate. Multiple clamping support plates are connected to both sides of the upper mounting plate.

[0014] In this technical solution, the clamping connection component enables the terminal pins to be connected to electrical equipment such as wires and circuit boards.

[0015] Preferably, the pin connection unit further includes an inner connection component, the inner connection component includes a central limiting plate, a central groove is formed at the top of the terminal pin, the central limiting plate is disposed in the central groove, and the side of the central limiting plate is connected to the terminal pin;

[0016] The top of the middle limiting plate is connected to a perforated connecting plate;

[0017] The middle limit plate and the terminal pins are each provided with multiple locking holes, and the middle limit plate and the terminal pins are connected to a set of mounting bolts through the locking holes.

[0018] In this technical solution, the internal connection component enables the terminal pins to be connected to electrical equipment such as wires and circuit boards.

[0019] Preferably, the pin connection unit further includes an external connection component, the external connection component including a threaded outer cylinder, the upper surface of the terminal pin is provided with an external thread, the inner wall of the threaded outer cylinder is provided with an internal thread, and the threaded outer cylinder is threadedly connected to the surface of the terminal pin.

[0020] The top of the threaded outer cylinder is connected to a middle connecting plate;

[0021] The inner wall of the top surface of the threaded outer cylinder is connected to a contact post, and the top of the terminal pin is provided with an insertion groove. The contact post is disposed in the insertion groove, and the terminal pin contacts the surface of the contact post.

[0022] In this technical solution, the external connection components enable the terminal pins to be connected to electrical equipment such as wires and circuit boards.

[0023] Preferably, the bottom end of the bearing cylinder is threaded with a ceramic plug.

[0024] In this technical solution, ceramic plugs can not only seal the molten glass beads, but also increase the insulation performance.

[0025] Preferably, an insulating protective cover is provided on the outer side and above the anti-overflow ring, and an insulating pad is covered on the top edge of the insulating protective cover. Both the insulating protective cover and the insulating pad are adhered to the top surface of the terminal cap.

[0026] In this technical solution, the use of insulating protective covers and insulating pads increases the sealing line and insulation performance of the wiring terminals.

[0027] Preferably, an installation unit is connected to the outside of the terminal cap. The installation unit includes a support ring, a sealing and fixing component, and an adjustment component. The support ring is connected to the outside of the terminal cap, and the sealing and fixing component is installed at the support ring. The adjustment component is kinetically connected to the sealing and fixing component.

[0028] The sealing and fixing assembly includes a mounting ring, which is disposed below the terminal cap. A sealing ring gasket is connected to the bottom of the mounting ring, and multiple connecting posts are connected to the top of the mounting ring. The surface of the connecting posts is slidably connected to the support ring, and the top of the connecting posts is connected to the bottom of the movable plate.

[0029] The top of the support ring is rotatably connected to a plurality of threaded shafts arranged in a ring array, and the surface of the threaded shafts is threadedly connected to the moving plate.

[0030] The top of the support ring is connected to a plurality of anti-detachment track columns arranged in a ring array, and the surface of the anti-detachment track columns is slidably connected to the moving plate.

[0031] In this technical solution, the use of a sealing and fixing component can increase the robustness and sealing of the connection between the wiring terminal and the refrigerator refrigeration compressor.

[0032] Preferably, the control component includes a rotating gear, with the top ends of the plurality of threaded shafts each connected to a rotating gear, the sides of the plurality of rotating gears meshing with the sides of a control gear ring, and the inner side of the control gear ring connected to the outer side of the rotating collar.

[0033] The inner side of the rotating collar is connected to the outer side of the fixed track, the inner side of the fixed track is connected to the outer side of the fixed side plate, and the bottom of the fixed side plate is connected to the top of the support ring.

[0034] The top of the rotating collar is connected to multiple force-applying shafts arranged in a ring array.

[0035] In this technical solution, the control component can be used to synchronously control the rotation of multiple threaded shafts, thereby controlling the operation of the sealing and fixing component.

[0036] Preferably, the production process includes the following steps:

[0037] S1. Parts preparation: Prepare the corresponding manufacturing materials and use the corresponding production equipment to produce the various parts of the terminal block;

[0038] S2. Component assembly: Assemble the terminal caps, terminal pins, and sealing glass beads on the fixture. Then, place the terminal caps, terminal pins, and sealing glass beads, along with the fixture, into the sintering furnace for sintering. Finally, assemble the other components.

[0039] S3. Surface treatment: The parts assembled in step S2 are chemically plated to remove surface oxides, and then subjected to silicone oil surface treatment to form a thin film on the surface to obtain the terminal block.

[0040] S4. Performance testing: Test the terminals obtained in step S3, discard defective products, and obtain good terminals.

[0041] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0042] The positive and progressive effects of this invention are as follows:

[0043] This invention utilizes a pin connection unit to enable the pins of the terminal block to be connected to electrical equipment such as wires and circuit boards. The connection method is simple and easy to operate, which can improve the connection efficiency of the terminal block. Furthermore, the connection between the terminal block and electrical equipment such as wires and circuit boards is stable and not easy to loosen, making it convenient for the connection and use of the terminal block. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the structure of the sealed terminal block according to an embodiment of the present invention.

[0045] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the terminal cap, terminal pins, sealing glass bead, conductive plate, and fixing point of the sealed terminal block.

[0046] Figure 3 for Figure 1 The diagram shows a three-dimensional structure of the sealed terminal block, including the terminal cap, terminal pins, sealing glass bead, conductive plate, fixing point, and side connection assembly.

[0047] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the terminal cap, terminal pins, sealing glass beads, conductive plate, fixing point, and side connection assembly of the sealed terminal block.

[0048] Figure 5 for Figure 3 The diagram shows an exploded view of the side connection assembly of the sealed terminal block.

[0049] Figure 6 for Figure 1 The diagram shows a three-dimensional structure of the terminal pins and the clamping connection assembly of the sealed terminal block.

[0050] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the terminal pins and the clamping connection assembly of the sealed terminal block.

[0051] Figure 8 for Figure 1 The diagram shows a three-dimensional structure of the terminal pins and internal connection components of the sealed terminal block.

[0052] Figure 9 for Figure 8 The diagram shows a front view cross-sectional view of the terminal pins and internal connection components of the sealed terminal block.

[0053] Figure 10 for Figure 8 The diagram shows a side cross-sectional view of the terminal pins and internal connection components of the sealed terminal block.

[0054] Figure 11 for Figure 1 The diagram shows a three-dimensional structure of the terminal pins and external connection components of the sealed terminal block.

[0055] Figure 12 for Figure 11 The diagram shows a cross-sectional view of the terminal pins and external connection components of the sealed terminal block.

[0056] Figure 13 for Figure 1 The diagram shows the overall process flow of the sealed terminal block and its manufacturing process.

[0057] Figure 14 for Figure 1 The diagram shows the three-dimensional structure of the sealed terminal block, including the terminal cap, terminal pin, ceramic plug, insulating cover, insulating pad, and mounting unit. Figure 1 .

[0058] Figure 15 for Figure 14 The diagram shows the three-dimensional structure of the sealed terminal block, including the terminal cap, terminal pin, ceramic plug, insulating cover, insulating pad, and mounting unit. Figure 2 .

[0059] Figure 16 for Figure 14 The diagram shows a cross-sectional view of the terminal cap, terminal pin, ceramic plug, insulating protective cover, insulating pad, and mounting unit of the sealed terminal block.

[0060] Figure 17 for Figure 14 The diagram shows a three-dimensional structural representation of the mounting unit for the sealed terminal block.

[0061] Figure 18 for Figure 17 The diagram shows a cross-sectional view of the mounting unit for the sealed terminal block.

[0062] Figure 19 for Figure 18 A partially enlarged structural diagram of point A of the sealed terminal block shown.

[0063] Explanation of reference numerals in the attached figures

[0064] 1. Terminal cap;

[0065] 2. Terminal pins;

[0066] 3. Sealed glass beads;

[0067] 4. Bearing cylinder;

[0068] 5. Anti-overflow retaining ring;

[0069] 6. Side connecting assembly; 61. First connecting plate; 62. Second connecting plate; 63. Locking protrusion; 64. Locking groove; 65. Support column;

[0070] 7. Clamping connection assembly; 71. Lower surrounding plate; 72. Vertical connecting plate; 73. Upper mounting plate; 74. Clamping support plate; 75. Fixing protrusion;

[0071] 8. Internal connecting assembly; 81. Middle limit plate; 82. Hole-shaped connecting plate; 83. Mounting bolt assembly; 84. Support side plate;

[0072] 9. External connecting assembly; 91. Threaded outer cylinder; 92. Middle connecting plate; 93. Contact post; 94. Middle connecting hole; 95. Contact groove;

[0073] 10. Ceramic plugs;

[0074] 11. Insulating protective cover;

[0075] 12. Insulating mat;

[0076] 13. Support ring;

[0077] 14. Sealing and fixing assembly; 141. Mounting ring; 142. Sealing ring gasket; 143. Connecting post; 144. Moving plate; 145. Threaded shaft; 146. Anti-derailment track post;

[0078] 15. Control component; 151. Rotating gear; 152. Control gear ring; 153. Rotating collar; 154. Fixed track; 155. Fixed side plate; 156. Force-applying shaft. Detailed Implementation

[0079] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0080] Figures 1 to 13 The diagram shown is a structural schematic of an embodiment of the sealed terminal block and its manufacturing process of the present invention.

[0081] Example 1: As Figures 1 to 2 As shown, the sealing terminal includes a terminal cap 1, multiple terminal pins 2 and multiple sealing glass beads 3. The sealing glass beads 3 are sleeved on the surface of the terminal pins 2. The top surface of the terminal cap 1 has multiple mounting holes. The terminal pins 2 are connected to the side of the sealing glass beads 3 through the mounting holes.

[0082] During production, the sealing glass bead 3 can fill the gap between the terminal cap 1 and the terminal cap 1, thereby maintaining the sealing of the terminal.

[0083] A pin connection unit is installed at the end of each of the multiple terminal pins 2 away from the terminal cap 1. The pin connection unit is used to connect the terminal pins 2 to other electrical equipment.

[0084] In this technical solution, the pin connection unit enables the terminal pin 2 to be connected to electrical equipment such as wires and circuit boards. The connection method is simple and easy to operate, which can improve the connection efficiency of the terminal. The connection between the terminal and electrical equipment such as wires and circuit boards is stable and not easy to loosen, which facilitates the connection and use of the terminal.

[0085] Multiple carrier cylinders 4 are connected to the inner wall of the top surface of the terminal cap 1, multiple anti-overflow rings 5 ​​are connected to the top of the terminal cap 1, the sealing glass bead 3 is disposed inside the carrier cylinder 4, and a connecting hole is opened on the bottom surface of the carrier cylinder 4;

[0086] The central axes of the mounting holes on the top surfaces of the bearing cylinder 4, the anti-overflow ring 5, the sealing glass bead 3, and the terminal cap 1 are on the same vertical line.

[0087] During installation, the terminal pin 2 is inserted into the inside of the sealing glass bead 3, and then the sealing glass bead 3 is placed in the carrier cylinder 4. At this time, heating equipment such as a sintering furnace is used to melt the sealing glass bead 3. The sealing glass bead 3 can fill the gap between the carrier cylinder 4 and the terminal pin 2, thereby completing the installation of the terminal pin 2 and the sealing glass bead 3.

[0088] At this time, the bearing cylinder 4 can control the shape formed by the sealing glass beads 3, while the anti-overflow ring 5 can control the range of melting and flow of the sealing glass beads 3.

[0089] Example 2: As an example of this application, such as Figures 3 to 5 As shown, the difference between this embodiment and other embodiments is that the pin connection unit includes a side connection component 6, which includes a first connection plate 61 and a second connection plate 62. The first connection plate 61 and the second connection plate 62 are symmetrically connected to the surface of the terminal pin 2. A plurality of locking protrusions 63 are connected to the opposite side of the first connection plate 61 and the second connection plate 62. A plurality of locking slots 64 are opened on the surface of the terminal pin 2, and the locking protrusions 63 are disposed in the locking slots 64.

[0090] The top of the terminal pin 2 contacts the bottom of the support column 65, and the top of the support column 65 is connected to the inner side of the first connecting plate 61 and the second connecting plate 62 respectively.

[0091] The first connecting plate 61 and the second connecting plate 62 each have a preset groove on their opposite sides.

[0092] In this technical solution, the side connection component 6 enables the terminal pin 2 to be connected to electrical equipment such as wires and circuit boards.

[0093] When in use, the locking protrusion 63 can be locked in the locking groove 64, increasing the drag resistance of the first connecting plate 61 and the second connecting plate 62, and increasing the stability of the connection of the terminal pin 2.

[0094] The support column 65 can increase the stability between the first connecting plate 61, the second connecting plate 62 and the terminal pin 2;

[0095] During connection, electrical equipment such as wires and circuit boards are connected to the first connecting plate 61 and the second connecting plate 62 to complete the connection of the terminals.

[0096] Example 3: As an example of this application, such as Figure 6 and Figure 7 As shown, the difference between it and other embodiments is that the pin connection unit further includes a clamping connection component 7, which includes a lower surrounding plate 71 connected to the surface of the terminal pin 2.

[0097] The lower enclosure plate 71 is connected to a vertical connecting plate 72 at its top, and the top of the vertical connecting plate 72 is connected to an upper mounting plate 73. Multiple clamping support plates 74 are connected to both sides of the upper mounting plate 73.

[0098] The lower enclosure plate 71 has a fixing protrusion 75 connected to its inner side, and the terminal pin 2 has a fixing groove on its surface, with the fixing protrusion 75 located in the fixing groove.

[0099] In this technical solution, the clamping connection component 7 enables the terminal pin 2 to be connected to electrical equipment such as wires and circuit boards.

[0100] In use, the lower enclosure plate 71 rests on the surface of the terminal pin 2, and the fixing protrusion 75 engages in the fixing groove opened in the terminal pin 2, increasing the stability of the connection between the lower enclosure plate 71 and the terminal pin 2. Then, the clamping support plate 74 surrounds the surface of the wire and other reference equipment to complete the connection of the terminal.

[0101] Example 4: As an example of this application, such as Figures 8 to 10 As shown, the difference between it and other embodiments is that the pin connection unit further includes an inner connection component 8, the inner connection component 8 includes a middle limiting plate 81, the top of the terminal pin 2 is provided with a central groove, the middle limiting plate 81 is disposed in the central groove, and the side of the middle limiting plate 81 is connected to the terminal pin 2.

[0102] The top of the middle limiting plate 81 is connected to a perforated connecting plate 82;

[0103] Both the middle limiting plate 81 and the terminal pin 2 are provided with multiple locking holes, and the middle limiting plate 81 and the terminal pin 2 are connected to the mounting bolt group 83 through the locking holes.

[0104] The top of the middle limiting plate 81 is connected to two symmetrically distributed support side plates 84, and one side of each of the two support side plates 84 is connected to both sides of the perforated connecting plate 82.

[0105] The supporting side plate 84 has a triangular structure.

[0106] The support side plate 84 can increase the stability of the connection between the middle limit plate 81 and the hole-shaped connecting plate 82, and reduce the probability of the hole-shaped connecting plate 82 being broken.

[0107] In this technical solution, the internal connection component 8 enables the terminal pin 2 to be connected to electrical equipment such as wires and circuit boards.

[0108] In use, the middle limit plate 81 and the terminal pin 2 are connected by the mounting bolt group 83, which makes the connection between the middle limit plate 81 and the terminal pin 2 more stable, and while retaining the function of detachability, it also has extremely high anti-drag resistance.

[0109] Then, connect the wires and other electrical equipment to the hole-shaped connection plate 82 to complete the connection of the terminal blocks.

[0110] In use, the support side plates 84 on both sides can increase the stability of the connection between the hole-shaped connecting plate 82 and the middle limit plate 81, and can prevent the hole-shaped connecting plate 82 from being broken by external forces, thereby increasing the stability of the terminal connection.

[0111] Example 5: As an example of this application, such as Figure 11 and Figure 12 As shown, the difference between it and other embodiments is that the pin connection unit further includes an external connection component 9, which includes a threaded outer cylinder 91. The upper surface of the terminal pin 2 is provided with an external thread, and the inner wall of the threaded outer cylinder 91 is provided with an internal thread. The threaded outer cylinder 91 is threadedly connected to the surface of the terminal pin 2.

[0112] The top of the threaded outer cylinder 91 is connected to a middle connecting plate 92;

[0113] The inner wall of the top surface of the threaded outer cylinder 91 is connected to a contact post 93. The top of the terminal pin 2 is provided with an insertion groove. The contact post 93 is disposed in the insertion groove and the terminal pin 2 contacts the surface of the contact post 93.

[0114] The central connecting plate 92 has a central connecting hole 94 at its center, and multiple contact grooves 95 are provided on both the left and right sides of the central connecting plate 92.

[0115] The connection hole 94 and the contact groove 95 facilitate the connection of wires of other electrical equipment, and increase the anti-disconnection property when connecting wires of other electrical equipment.

[0116] In this technical solution, the external connection component 9 enables the terminal pin 2 to be connected to electrical equipment such as wires and circuit boards.

[0117] In use, the threaded outer cylinder 91 is rotated so that the threaded outer cylinder 91 can be installed onto the surface of the terminal pin 2. At this time, the contact post 93 is inserted into the groove opened in the terminal pin 2.

[0118] Then connect the middle connecting plate 92 to electrical equipment such as wires to complete the connection of the terminal blocks;

[0119] At this time, the contact groove 95 and the central connecting hole 94 can engage with electrical equipment such as wires, thereby increasing the tensile strength of the connection between the electrical equipment such as wires and the central connecting plate 92.

[0120] The threaded outer cylinder 91 makes it easier to disassemble structures such as the middle connecting plate 92, increasing the flexibility of using structures such as the threaded outer cylinder 91 and the middle connecting plate 92.

[0121] like Figure 13 As shown, the production process includes the following steps:

[0122] S1. Parts preparation: Prepare the corresponding manufacturing materials and use the corresponding production equipment to produce the various parts of the terminal block;

[0123] S2. Component assembly: Assemble the terminal cap 1, terminal pin 2, and sealing glass bead 3 on the fixture. Then, place the terminal cap 1, terminal pin 2, and sealing glass bead 3, along with the fixture, into the sintering furnace for sintering. Finally, assemble the other components.

[0124] S3. Surface treatment: The parts assembled in step S2 are chemically plated to remove surface oxides, and then subjected to silicone oil surface treatment to form a thin film on the surface to obtain the terminal block.

[0125] S4. Performance testing: Test the terminals obtained in step S3, discard defective products, and obtain good terminals.

[0126] During the manufacturing process, in step S1, the corresponding metal or other conductive materials that meet the usage requirements are prepared, and the corresponding parts are manufactured using methods such as sintering, stretching and stamping, and die casting.

[0127] The terminal cap 1 is made of steel plate by stretching and stamping, and the terminal pin 2 is made of wire by using a rubbing die.

[0128] The manufacturing process of the sealing glass bead 3 is as follows: first, the glass powder is pre-pressed into a semi-finished glass ball, and then the semi-finished glass ball is pre-sintered to obtain the sealing glass bead 3.

[0129] In step S3, chemical plating is used to remove surface oxides, resulting in corrosion resistance and weldability.

[0130] By using silicone oil surface treatment, a thin film that does not affect conductivity or insulation is formed on the surface, improving hydrophobicity to protect the sealed glass beads 3.

[0131] In step S4, a liquid is used to test the sealing performance of the wiring terminals;

[0132] The liquid is alcohol; water is not used, which prevents the terminals from rusting.

[0133] Example 6: As an example of this application, such as Figures 14 to 16 As shown, the difference between this embodiment and other embodiments is that the bottom end of the bearing cylinder 4 is threaded with a ceramic plug 10.

[0134] In this technical solution, the ceramic plug 10 can not only seal the molten sealing glass bead 3, but also increase the insulation performance.

[0135] An insulating protective cover 11 is provided on the outside and above the anti-overflow ring 5. An insulating pad 12 is covered on the top edge of the insulating protective cover 11. Both the insulating protective cover 11 and the insulating pad 12 are adhered to the top surface of the terminal cap 1.

[0136] In this technical solution, the insulating protective cover 11 and the insulating pad 12 are used to increase the sealing line and insulation performance of the wiring terminals.

[0137] The ceramic plug 10 has an external thread at its upper end, and the bearing cylinder 4 has a threaded hole at its bottom end. The ceramic plug 10 is threadedly connected to the bottom end of the bearing cylinder 4 through the external thread and the threaded hole.

[0138] When in use, the ceramic plug 10 can increase the insulation performance of the terminal block.

[0139] During installation, first, multiple insulating protective covers 11 are placed on the surface of the terminal pins 2, and the insulating protective covers 11 are glued to the top of the terminal cap 1. Then, the insulating pad 12 is glued to the top of the terminal cap 1. At this time, the insulating pad 12 can press on the top edge of the insulating protective cover 11, which can further fix the position of the insulating protective cover 11 and increase the stability of the installation of the insulating protective cover 11.

[0140] Example 7: As an example of this application, such as Figures 17 to 19 As shown, the difference between this embodiment and other embodiments is that an installation unit is connected to the outside of the terminal cap 1. The installation unit includes a support ring 13, a sealing and fixing component 14, and an adjustment component 15. The support ring 13 is connected to the outside of the terminal cap 1, and the sealing and fixing component 14 is installed at the support ring 13. The adjustment component 15 is connected to the sealing and fixing component 14 in a transmission connection.

[0141] The sealing and fixing assembly 14 includes a mounting ring 141, which is disposed below the terminal cap 1. A sealing ring gasket 142 is connected to the bottom of the mounting ring 141, and a plurality of connecting posts 143 are connected to the top of the mounting ring 141. The surface of the connecting posts 143 is slidably connected to the support ring 13, and the top of the connecting posts 143 is connected to the bottom of the movable plate 144.

[0142] The bottom surface of the sealing ring gasket 142 has an annular groove, which makes the sealing ring gasket 142 more airtight during installation.

[0143] The top of the support ring 13 is rotatably connected to a plurality of threaded shafts 145 arranged in a ring array, and the surface of the threaded shafts 145 is threadedly connected to the movable plate 144.

[0144] The top of the support ring 13 is connected to a plurality of anti-detachment track columns 146 arranged in a ring array, and the surface of the anti-detachment track columns 146 is slidably connected to the movable plate 144.

[0145] The top of the anti-detachment track post 146 is connected to an anti-detachment plate, which can prevent the moving plate 144 from sliding out of the anti-detachment track post 146.

[0146] In this technical solution, the sealing and fixing component 14 can increase the firmness and sealing of the connection between the wiring terminal and the refrigerator refrigeration compressor.

[0147] The control component 15 includes a rotating gear 151. The top ends of the plurality of threaded shafts 145 are all connected to the rotating gear 151. The sides of the plurality of rotating gears 151 are meshed with the sides of the control gear ring 152. The inner side of the control gear ring 152 is connected to the outer side of the rotating collar 153.

[0148] The inner side of the rotating collar 153 is connected to the outer side of the fixed track 154, the inner side of the fixed track 154 is connected to the outer side of the fixed side plate 155, and the bottom of the fixed side plate 155 is connected to the top of the support ring 13.

[0149] The fixed track 154 has a T-shaped cross-section.

[0150] The top of the rotating collar 153 is connected to a plurality of force-applying shafts 156 arranged in a ring array.

[0151] In this technical solution, the control component 15 can be used to synchronously control the rotation of multiple threaded shafts 145, thereby controlling the operation of the sealing and fixing component 14.

[0152] In use, the rotating collar 153 can be rotated by the force shaft 156, so that the rotating collar 153 can rotate around the fixed track 154. When the rotating collar 153 rotates, it can drive the control gear ring 152 to rotate, thereby driving multiple rotating gears 151 to rotate.

[0153] When the rotating gear 151 rotates, it can drive the moving plate 144 to move down along the anti-detachment track column 146, thereby driving the connecting column 143 to move in the same direction, which in turn drives the mounting ring 141 and the sealing ring gasket 142 to move in the same direction, so that the sealing ring gasket 142 is tightly attached to the refrigerator refrigeration compressor mounting location, thereby increasing the firmness and sealing of the wiring terminal installation and increasing the stability of the wiring terminal installation.

[0154] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A sealed terminal, characterized by: The utility model provides a terminal cap (1), a plurality of terminal pin (2) and a plurality of sealing glass beads (3), the sealing glass beads (3) are sleeved on the surface of terminal pin (2), the top surface of terminal cap (1) is equipped with a plurality of mounting holes, and the terminal pin (2) is connected to the side of sealing glass beads (3) through the mounting hole; Pin connection unit, a plurality of terminal pin (2) away from the one end of terminal cap (1) is equipped with pin connection unit, and the pin connection unit is used for connecting terminal pin (2) with other electrical equipment; The outer side of terminal cap (1) is connected with mounting unit, and the mounting unit comprises support ring (13), sealing fixed component (14) and control component (15), the support ring (13) is connected to the outer side of terminal cap (1), the sealing fixed component (14) is installed at support ring (13), and the control component (15) is in transmission connection with sealing fixed component (14); The sealing fixed component (14) comprises mounting ring (141), the mounting ring (141) is arranged below terminal cap (1), the bottom of mounting ring (141) is connected with sealing ring pad (142), the top of mounting ring (141) is connected with a plurality of connecting columns (143), the surface of connecting column (143) is slidably penetrated with support ring (13), and the top of connecting column (143) is connected with the bottom of moving plate (144); The top of support ring (13) is rotatably connected with a plurality of threaded shafts (145) arranged in annular array, and the surface of threaded shaft (145) is in screw connection with moving plate (144); The top of support ring (13) is connected with a plurality of anti-derailment track columns (146) arranged in annular array, and the surface of anti-derailment track column (146) is slidably penetrated with moving plate (144).

2. The sealed terminal of claim 1, wherein: The pin connection unit comprises side connecting component (6), the side connecting component (6) comprises first connecting plate (61) and second connecting plate (62), the first connecting plate (61) and the second connecting plate (62) are symmetrically connected to the surface of terminal pin (2), a plurality of clamping protrusions (63) are connected to the opposite side of first connecting plate (61) and second connecting plate (62), a plurality of clamping grooves (64) are formed in the surface of terminal pin (2), and the clamping protrusion (63) is arranged in the clamping groove (64); The top of terminal pin (2) is in contact with the bottom end of support column (65), and the top of support column (65) is connected to the inner side of first connecting plate (61) and second connecting plate (62) respectively.

3. The sealed terminal of claim 1, wherein: The pin connection unit further comprises embracing connecting component (7), and the embracing connecting component (7) comprises lower surrounding plate (71), and the lower surrounding plate (71) is connected to the surface of terminal pin (2); The top of lower surrounding plate (71) is connected with vertical connecting plate (72), the top of vertical connecting plate (72) is connected with upper mounting plate (73), and a plurality of embracing supporting plates (74) are connected to the two sides of upper mounting plate (73).

4. The sealed terminal of claim 1, wherein: The pin connecting unit further comprises an inner connecting assembly (8), the inner connecting assembly (8) comprises a middle limiting plate (81), a central groove is formed at the top end of the terminal pin (2), the middle limiting plate (81) is arranged in the central groove, and the side surface of the middle limiting plate (81) is connected with the terminal pin (2); The top of the middle limiting plate (81) is connected with a hole-shaped connecting plate (82); The middle limiting plate (81) and the terminal pin (2) are both provided with a plurality of locking holes, and the middle limiting plate (81) and the terminal pin (2) are connected with the mounting bolt group (83) through the locking holes.

5. The sealed terminal of claim 1, wherein: The pin connecting unit further comprises an outer connecting assembly (9), the outer connecting assembly (9) comprises a threaded outer cylinder (91), the upper end surface of the terminal pin (2) is provided with external threads, the inner wall of the threaded outer cylinder (91) is provided with internal threads, and the threaded outer cylinder (91) is in threaded connection with the surface of the terminal pin (2); The top of the threaded outer cylinder (91) is connected with a middle connecting plate (92); The inner wall of the top surface of the threaded outer cylinder (91) is connected with a contact column (93), a protruding groove is formed at the top end of the terminal pin (2), the contact column (93) is arranged in the protruding groove, and the surface of the contact column (93) is in contact with the terminal pin (2).

6. The sealed terminal of claim 1, wherein: The inner wall of the top surface of the terminal cap (1) is connected with a plurality of bearing cylinders (4), the top of the terminal cap (1) is connected with a plurality of anti-overflow retaining rings (5), the sealing glass beads (3) are arranged on the inner side of the bearing cylinder (4), and the bottom surface of the bearing cylinder (4) is provided with a communication hole; The middle axis of the bearing cylinder (4), the anti-overflow retaining ring (5), the sealing glass beads (3) and the mounting hole of the top surface of the terminal cap (1) are located on the same vertical line.

7. The sealed terminal of claim 6, wherein: The bottom end of the bearing cylinder (4) is threadedly connected with a ceramic plug (10); The outer side and the upper side of the anti-overflow retaining ring (5) are provided with an insulating protective cover (11), the edge of the insulating protective cover (11) is covered with an insulating pad (12), and the insulating protective cover (11) and the insulating pad (12) are both bonded to the top surface of the terminal cap (1).

8. The sealed terminal of claim 1, wherein: The control assembly (15) comprises a rotating gear (151), the top end of each of the plurality of threaded shafts (145) is connected with a rotating gear (151), the side surfaces of the plurality of rotating gears (151) are all in meshing connection with the side surface of a control tooth ring (152), and the inner side of the control tooth ring (152) is connected with the outer side of a rotating sleeve ring (153); The inner side of the rotating sleeve ring (153) is connected with the outer side of a fixed track (154), the inner side of the fixed track (154) is connected with the outer side of a fixed side plate (155), and the bottom of the fixed side plate (155) is connected with the top of the support ring (13); The top of the rotating sleeve ring (153) is connected with a plurality of force applying shafts (156) arranged in an annular array.

9. The hermetic terminal of any one of claims 1 to 8, obtained by a process for the production of hermetic terminals, characterized by: The production process comprises the following operation steps: S1, part preparation, preparing corresponding manufacturing materials, and producing each part of the terminal by using corresponding production equipment; S2, part assembly, assemble the terminal end cap (1), terminal pin (2) and sealing glass bead (3) on the tool, then put the terminal end cap (1), terminal pin (2) and sealing glass bead (3) together with the tool into the sintering furnace for sintering, and finally assemble other parts; S3, surface treatment, chemical plating surface treatment is carried out on the parts assembled in step S2, the surface oxides are removed, and then silicon oil surface treatment is carried out, a film is formed on the surface, and a terminal is obtained; S4, performance test, test the terminal obtained in step S3, eliminate defective products, and obtain good terminal.

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