Small-sized PTC starter capable of being quickly recovered

Abstract

The utility model discloses a small-sized rapidly-recoverable PTC starter, which comprises a PTC starter shell, a cover plate is assembled at the lower end of the PTC starter shell, and an insulating plate is assembled in the PTC starter shell; a BaTiO3 series semiconductor chip is assembled on the outer wall of the insulating plate, and tinned metal sheets are assembled on the portions, located on the two sides of the BaTiO3 series semiconductor chip, in the PTC starter shell. Two mounting holes are formed in the side wall of the cover plate, electrode wires are inserted into the mounting holes, one end of each electrode wire is connected with a tinned metal sheet, and a terminal connector is mounted at the other end of each electrode wire; according to the small PTC starter capable of being recovered quickly, the arc-shaped protection plates are arranged at the connecting positions of the electrode wires, so that the connecting positions of the electrode wires can be limited and fixed, bending of the connecting positions is avoided, breakage caused by long-time use is prevented, and the small PTC starter has the advantages of being small in size, small in weight, resistant to high voltage and capable of dissipating heat quickly.

Description

Technical Field

[0001] The utility model relates to the field of PTC starters, in particular to a small PTC starter which can be quickly restored. Background Art

[0002] There are two types of starters commonly used in refrigerators and air conditioners on the market: heavy hammer type and PTC starter. PTC starter has developed rapidly in the past decade or so, and has been gradually widely used because of its advantages such as no mechanical contacts and no sparks.

[0003] However, the PTC starter in the prior art still has some shortcomings. For example, the electrode wire connection is easily bent and broken after long-term use, which affects the use of the starter. Therefore, the prior art needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a small PTC starter with rapid recovery to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a small-sized PTC starter capable of rapid recovery, comprising a PTC starter housing, a cover plate being mounted at the lower end of the PTC starter housing, and an insulating plate being mounted inside the PTC starter housing;

[0006] The outer wall of the insulating plate is equipped with a BaTiO3 series semiconductor chip, and the inside of the PTC starter housing is equipped with tin-plated metal sheets on both sides of the BaTiO3 series semiconductor chip;

[0007] The side wall of the cover plate is provided with two mounting holes, and an electrode wire is inserted into the mounting hole, one end of the electrode wire is connected to a tinned metal sheet, and the other end of the electrode wire is installed with a terminal connector;

[0008] The outer part of the electrode line is sleeved with a limiting sleeve near the cover plate, the left side of the outer wall of the lower end of the electrode line located at the limiting sleeve is sleeved with a left arc-shaped protective plate, and the right side of the outer wall of the lower end of the electrode line located at the limiting sleeve is sleeved with a right arc-shaped protective plate;

[0009] External support rods are installed at the middle sections of the side walls of the left arc-shaped guard plate and the right arc-shaped guard plate, and sliding blocks are installed at the upper ends of the two external support rods.

[0010] Preferably, bearing blocks are installed on both side walls of the limiting sleeve, and supporting components are installed on the upper surface of the sliding block, and ends of the supporting components are connected to the bearing blocks.

[0011] Preferably, inner walls of the outer support rods are installed with inner support rods, and upper ends of the inner support rods are installed with L-shaped corner guards.

[0012] Preferably, it is characterized in that: a clamping block is installed on the inner side wall of the left arc-shaped guard plate, and a clamping slot is installed on the inner side wall of the right arc-shaped guard plate, and the clamping block and the clamping slot cooperate with each other.

[0013] Preferably, the support assembly comprises a fixed body, a spring and a fixed plate, the spring is installed between the fixed body and the fixed plate, the fixed body is installed on the sliding block, and the fixed plate is installed on the bearing block.

[0014] Preferably, a balancing cavity is formed on the side wall of the fixing body, a balancing rod is installed on the side wall of the fixing plate, the balancing rod is inserted into the balancing cavity, a balancing plate is installed on the end of the balancing rod, and the balancing plate is arranged in the balancing cavity.

[0015] Preferably, a heat shrink tube is sheathed on the outside of the limiting sleeve, and sealing glue is coated on the gap of the cover plate.

[0016] Preferably, a heat sink sleeve is mounted on the outside of the PTC starter housing.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the small-sized and quickly recoverable PTC starter has a simple structure and is easy to operate. By arranging an arc-shaped protective plate at the connection of the electrode wire, the connection of the electrode wire can be limited and fixed to avoid bending at the connection and prevent breakage due to long-term use. It has a small size and weight, is resistant to high pressure and has a relatively fast heat dissipation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the limit sleeve of the utility model;

[0020] Figure 3 It is a schematic diagram of the support assembly of the utility model;

[0021] Figure 4 This is a schematic structural diagram of part A of the utility model.

[0022] In the figure: 1 heat sink sleeve, 2 BaTiO3 series semiconductor chip, 3 insulating board, 4 PTC starter housing, 5 sealing glue, 6 terminal connector, 7 electrode wire, 8 heat shrink tube, 9 cover plate, 10 tinned metal plate, 11 limit sleeve, 13 L-shaped corner guard, 14 inner support rod, 15 right arc-shaped guard plate, 16 left arc-shaped guard plate, 17 slot, 18 block, 19 outer support rod, 20 bearing block, 21 support assembly, 211 fixing plate, 212 spring, 213 fixing body, 22 slider, 23 balance rod, 24 balance plate, 25 balance cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4 The utility model provides a technical solution: a small-sized PTC starter capable of rapid recovery, comprising a PTC starter housing 4, a cover plate 9 is mounted at the lower end of the PTC starter housing 4, and an insulating plate 3 is mounted inside the PTC starter housing 4;

[0025] The outer wall of the insulating plate 3 is equipped with a BaTiO3 semiconductor chip 2, and the inside of the PTC starter housing 4 is equipped with tinned metal sheets 10 on both sides of the BaTiO3 semiconductor chip 2;

[0026] The side wall of the cover plate 9 is provided with two mounting holes, and the electrode wire 7 is inserted into the mounting holes, one end of the electrode wire 7 is connected to the tinned metal sheet 10, and the other end of the electrode wire 7 is installed with a terminal connector 6;

[0027] The outer part of the electrode line 7 is sleeved with a limiting sleeve 11 near the cover plate 9, and the electrode line 7 is sleeved with a left arc-shaped protective plate 16 on the left side of the outer wall of the lower end of the limiting sleeve 11, and the electrode line 7 is sleeved with a right arc-shaped protective plate 15 on the right side of the outer wall of the lower end of the limiting sleeve 11;

[0028] External support rods 19 are installed at the middle sections of the side walls of the left arc-shaped guard plate 16 and the right arc-shaped guard plate 15 , and sliding blocks 22 are installed at the upper ends of the two external support rods 19 .

[0029] The two side walls of the limit sleeve 11 are installed with bearing blocks 20, and the upper surface of the slider 22 is installed with support components 21. The ends of the support components 21 are connected to the bearing blocks 20. The support components 21 push the bearing blocks, thereby driving the limit sleeve 11 to move, so that the bearing blocks can fit with the external equipment and the assembly at the joint can be more stable.

[0030] The inner walls of the outer support rods 19 are all installed with inner support rods 14 , and the upper ends of the inner support rods 14 are all installed with L-shaped corner guards 13 .

[0031] A clamping block 18 is installed on the inner side wall of the left arc-shaped guard plate 16 , and a clamping slot 17 is installed on the inner side wall of the right arc-shaped guard plate 15 . The clamping block 18 and the clamping slot 17 match each other.

[0032] The support assembly 21 includes a fixing body 213 , a spring 212 and a fixing plate 211 . The spring 212 is installed between the fixing body 213 and the fixing plate 211 . The fixing body 213 is installed on the slider 22 . The fixing plate 211 is installed on the bearing block 20 .

[0033] The side wall of the fixing body 213 is provided with a balancing cavity 25 , the side wall of the fixing plate 211 is provided with a balancing rod 23 which is inserted into the balancing cavity 25 , and the end of the balancing rod 23 is provided with a balancing plate 24 which is disposed in the balancing cavity 25 .

[0034] The outer portion of the limiting sleeve 11 is covered with a heat shrink tube 8 , and the gap of the cover plate 9 is coated with a sealing glue 5 .

[0035] The exterior of the PTC starter housing 4 is sheathed with a heat sink sleeve 1 .

[0036] Working process and principle: Install the tinned metal sheet into the shell along the limit groove, place the BaTiO3 semiconductor chip in the center hole of the insulating plate, install it into the shell along the middle limit groove and cover it with the cover. Crimping the two electrode wires and the two terminal connectors respectively, finally put the stainless steel heat sink on the shell to clamp the shell, and fix it with rivets at the right round hole.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A small-sized quick-recoverable PTC starter, comprising a PTC starter housing (4), characterized in that: The lower end of the PTC starter housing (4) is equipped with a cover plate (9), and the interior of the PTC starter housing (4) is equipped with an insulating plate (3); The outer wall of the insulating plate (3) is equipped with a BaTiO3-based semiconductor chip (2), and the interior of the PTC starter housing (4) is equipped with tin-plated metal sheets (10) on both sides of the BaTiO3-based semiconductor chip (2); The side wall of the cover plate (9) is provided with two mounting holes, and an electrode wire (7) is inserted into the mounting hole, one end of the electrode wire (7) is connected to a tinned metal sheet (10), and the other end of the electrode wire (7) is installed with a terminal connector (6); The outer part of the electrode wire (7) is sleeved with a limiting sleeve (11) near the cover plate (9); the left side of the outer wall of the lower end of the electrode wire (7) located at the limiting sleeve (11) is sleeved with a left arc-shaped protective plate (16); the right side of the outer wall of the lower end of the electrode wire (7) located at the limiting sleeve (11) is sleeved with a right arc-shaped protective plate (15); External support rods (19) are installed at the middle sections of the side walls of the left arc-shaped guard plate (16) and the right arc-shaped guard plate (15), and sliding blocks (22) are installed at the upper ends of the two external support rods (19).

2. A small-sized fast-recoverable PTC starter according to claim 1, characterized in that: Both side walls of the limiting sleeve (11) are installed with bearing blocks (20), and the upper surface of the sliding block (22) is installed with a supporting assembly (21), and the end of the supporting assembly (21) is connected to the bearing block (20).

3. A small-sized fast-recoverable PTC starter according to claim 1, characterized in that: The inner walls of the outer support rods (19) are all installed with inner support rods (14), and the upper ends of the inner support rods (14) are all installed with L-shaped corner guards (13).

4. A small-sized fast-recoverable PTC starter according to claim 1, characterized in that: A clamping block (18) is installed on the inner side wall of the left arc-shaped guard plate (16), and a clamping groove (17) is installed on the inner side wall of the right arc-shaped guard plate (15), and the clamping block (18) and the clamping groove (17) are matched.

5. A small-sized fast-recoverable PTC starter according to claim 2, characterized in that: The support assembly (21) comprises a fixed body (213), a spring (212) and a fixed plate (211); the spring (212) is installed between the fixed body (213) and the fixed plate (211); the fixed body (213) is installed on a sliding block (22); and the fixed plate (211) is installed on a bearing block (20).

6. A small-sized fast-recoverable PTC starter according to claim 5, characterized in that: A balancing cavity (25) is formed on the side wall of the fixed body (213); a balancing rod (23) is installed on the side wall of the fixed plate (211); the balancing rod (23) is inserted into the balancing cavity (25); a balancing plate (24) is installed at the end of the balancing rod (23); and the balancing plate (24) is arranged in the balancing cavity (25).

7. A small-sized fast-recoverable PTC starter according to claim 1, characterized in that: The outer portion of the limiting sleeve (11) is sheathed with a heat shrink tube (8), and the gap of the cover plate (9) is coated with sealing glue (5).

8. A small-sized fast-recoverable PTC starter according to claim 1, characterized in that: The exterior of the PTC starter housing (4) is sheathed with a heat sink sleeve (1).

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