CN212659501U

CN212659501U - Overload protector

Info

Publication number: CN212659501U
Application number: CN202021389342.4U
Authority: CN
Inventors: 傅群
Original assignee: Hangzhou Dongchan Temperature Control Equipment Co Ltd
Current assignee: Hangzhou Dongchan Temperature Control Equipment Co Ltd
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2021-03-05
Anticipated expiration: 2030-07-15

Abstract

The utility model discloses an overload protector, which comprises a protective shell, pin I and pin II, be equipped with metal shrapnel in the protective housing, the last moving contact that is equipped with of metal shrapnel, metal shrapnel one end is equipped with the fixture block, sliding connection about the lateral wall of fixture block and protective housing, the fixture block bottom be equipped with metal shrapnel assorted slot, metal shrapnel can dismantle with the fixture block through the slot and be connected, the fixture block top is equipped with the button, the button top runs through the protective housing top and is located outside the protective housing, the button bottom be located the protective housing and with fixture block fixed connection, the metal shrapnel other end and a pin fixed connection, a pin one end and metal shrapnel fixed connection, the bottom that a pin one end runs through the protective housing is located outside the protective housing, two pin one end. The utility model has the advantages that: when the circuit is overloaded or the temperature is overhigh, the circuit is automatically disconnected.

Description

Overload protector

Technical Field

The utility model belongs to the technical field of the relevant technique of engine compartment and specifically relates to indicate an overload protection ware.

Background

Along with the continuous development of society, the quality of life of people is constantly improved, and various consumer appears in the life, along with domestic appliance and circuit constantly age, or electrical apparatus misuse, all easy emergence circuit overload or incident such as short circuit, if add between the socket of electrical apparatus and house circuit and set up overload protection ware will effectual reduction emergence incident's probability.

Especially, when the common electrical appliances in our family life are overloaded and the current or temperature is too high due to abnormal conditions occurring in the use process of the electrical appliances, the existing plug device cannot automatically disconnect the circuit because of no automatic power-off function, so that the damage of the electrical appliances and even the fire disaster are easily caused, and extremely serious consequences are brought.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome among the prior art electrical apparatus the unable automatic disconnection's of abnormal conditions circuit not enough appears in the use, provide an overload protection ware that can automatic disconnection circuit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an overload protector comprises a protective shell, a first pin and a second pin, wherein a metal elastic sheet is arranged in the protective shell, a moving contact is arranged on the metal elastic sheet, a clamping block is arranged at one end of the metal elastic sheet, the clamping block is connected with the side wall of the protective shell in a vertical sliding mode, an inserting groove matched with the metal elastic sheet is formed in the bottom of the clamping block, the metal elastic sheet is detachably connected with the clamping block through the inserting groove, a button is arranged at the top of the clamping block, the top of the button penetrates through the top of the protective shell and is located outside the protective shell, the bottom of the button is located in the protective shell and is fixedly connected with the clamping block, the other end of the metal elastic sheet is fixedly connected with the first pin, one end of the first pin is fixedly connected with the metal elastic sheet, the other end of the first pin penetrates through the, the other end of the pin II penetrates through the bottom of the protective shell and is located outside the protective shell.

Be equipped with metal shrapnel in the protective housing, the last moving contact that is equipped with of metal shrapnel, metal shrapnel's one end is equipped with the fixture block, sliding connection about the lateral wall of fixture block and protective housing, the bottom of fixture block be equipped with metal shrapnel assorted slot, metal shrapnel passes through slot and can dismantle with the fixture block and be connected, the top of fixture block is equipped with the button, the top of protective housing is run through at the top of button is located outside the protective housing, the bottom of button is located in the protective housing and with fixture block fixed connection, metal shrapnel's the other end and a pin fixed connection, the one end and the metal shrapnel fixed connection of pin one, the bottom that the other end of pin one runs through the protective housing is located outside the protective. The first pin and the second pin are respectively connected with a power supply and equipment through wires; when the circuit is connected, a moving contact on the metal elastic sheet and a fixed contact on the pin II are in a contact state, the current of the power supply sequentially flows into the equipment through the pin I, the metal elastic sheet and the pin II, and if an overload phenomenon occurs, the metal elastic sheet acts and deforms, so that the moving contact on the metal elastic sheet is automatically separated from the fixed contact on the pin II, the current is disconnected, and the equipment is protected from being damaged; in addition, a user can also act on the button, the button drives the metal elastic sheet to act through the clamping block, the circuit is controlled to be switched on or switched off manually, and the control is very convenient. The purpose of automatically disconnecting the circuit is achieved.

Preferably, the protective housing comprises an upper housing and a lower housing, the top of the lower housing is detachably connected with the upper housing to form a closed cavity, the metal elastic sheet and the fixture block are both located in the cavity, the top of the button penetrates through the upper housing and is located outside the cavity, the bottom of the button is located in the cavity, one end of the first pin, which is fixedly connected with the metal elastic sheet, and one end of the second pin, which is provided with the static contact, are both installed in the cavity, and the other end of the first pin and the other end of the second pin penetrate through the bottom of the lower housing and are located outside the. The protective shell plays a certain role in protecting circuit elements in the cavity, and meanwhile, when the equipment is in a power-on state, a human body is prevented from directly contacting the internal circuit elements, so that the safety of the human body is protected; the upper shell and the lower shell are detachably designed, so that the installation and the maintenance are convenient; one end of the first pin, which is positioned outside the cavity, is convenient for being electrically connected with an external power supply, and one end of the second pin, which is positioned outside the cavity, is convenient for being electrically connected with equipment.

As preferred, be equipped with the slider down on the casing, the slider be located the cavity and with the lateral wall fixed connection of casing down, the bottom of button be equipped with slider assorted spout, the fixture block is located the spout is run through at the top of slider, fixture block and button all install in the inferior valve internally through spout and slider phase-match, and all with casing about sliding connection down, the bottom of slider is equipped with the backup pad, the one end and the slider fixed connection and mutually perpendicular of backup pad, the other end and the fixture block of backup pad are connected. When the working state of the overload protector needs to be artificially controlled, a user only needs to control the button from the outside of the cavity, and the button controls the on-off of the circuit by controlling the contact or the separation of the moving contact on the metal elastic sheet and the fixed contact on the pin II through the fixture block, so that the safety performance of the circuit is greatly improved.

Preferably, the top of the clamping block is provided with a top plate and is perpendicular to the clamping block, the clamping block is fixedly connected with the bottom of the button through the top plate, the top of the sliding block penetrates through the top plate and is in vertical sliding connection with the button through a sliding groove, an L-shaped groove is formed in the bottom of the clamping block, one edge of the L-shaped groove is parallel to the supporting plate and is in contact with the supporting plate, and the slot is located on the other edge of the L-shaped groove. The design is favorable for realizing artificial control of the button, the button acts on the top plate, and when the top plate drives the clamping block to slide up and down, the clamping block drives the metal elastic sheet to move through the slot, so that the moving contact is contacted with or separated from the static contact, and the design is reasonable and simple; when the moving contact contacts with the fixed contact, the support plate contacts with one of the edges of the L-shaped groove to support the fixture block to a certain extent, so that the position stability of the fixture block and the button is improved.

Preferably, the shape of the first pin and the shape of the second pin are both L-shaped, one edge of the first pin is fixedly connected with the metal elastic sheet and is located in the cavity, the other edge of the first pin penetrates through the lower shell and is located outside the cavity, one edge of the second pin is located in the cavity, the static contact is located on one edge of the second pin, and the other edge of the second pin penetrates through the lower shell and is located outside the cavity. One end of the pin I, which is positioned in the cavity, is electrically connected with one end of the metal elastic sheet through fixed connection, one end of the pin I, which is positioned outside the cavity, is convenient for being electrically connected with an external power supply, one end of the pin II is contacted with or separated from a moving contact on the other end of the metal elastic sheet through a static contact, and one end of the pin II, which is positioned outside the cavity, is convenient for being electrically connected with equipment, so that the disconnection or the conduction of a circuit is realized.

Preferably, the lower shell is internally provided with a first mounting groove and a second mounting groove, one edge of the first pin fixedly connected with the metal elastic sheet is mounted in the first mounting groove, the side wall of the second mounting groove is provided with a through hole matched with the static contact, one edge of the second pin provided with the static contact is mounted in the second mounting groove, and the static contact penetrates through the through hole and is contacted with the moving contact. The first pin is arranged in the first mounting groove, and the second pin is arranged in the second mounting groove, so that the position stability of the first pin and the second pin is improved conveniently; meanwhile, due to the design of the through hole, the static contact and the moving contact can be conveniently contacted or separated, and the design is reasonable and simple.

Preferably, the metal elastic sheet is E-shaped, the metal elastic sheet is formed by integrally forming a substrate, a first side sheet, a second side sheet and a third side sheet which are perpendicular to the substrate, the second side sheet is located between the first side sheet and the third side sheet, the movable contact is located on the second side sheet, the length of the second side sheet is smaller than that of the first side sheet and that of the third side sheet respectively, two welding points are arranged on one edge of the first pin, one end of the first side sheet is fixedly connected with the substrate, the other end of the first side sheet is fixedly connected with the first pin through one of the welding points, one end of the third side sheet is fixedly connected with the substrate, and the other end of the third side sheet is. One end of the first pin, which is positioned outside the cavity, is electrically connected with an external power supply, the other end of the first pin is respectively communicated with the second side plate through the first side plate and the third side plate to form a circuit, a moving contact on the second side plate is separated from or contacted with a fixed contact on one end of the second pin, and the other end of the second pin is positioned outside the cavity and is electrically connected with equipment, so that the circuit is disconnected or communicated.

Preferably, the distance between the two welding points on the first pin is smaller than the distance between the first side piece and the third side piece. The design makes the one end that the first and third lateral plates switched on with the pin through corresponding welded point respectively draw close each other for the second lateral plate drives the moving contact and takes place epirelief or recessed when the circuit transships or the temperature is too high, thereby realizes moving contact and static contact or separation, and theory of operation is simple, and the response is quick sensitive.

The utility model has the advantages that: when the circuit is overloaded or the temperature is too high, the circuit is automatically disconnected, the equipment is protected from being damaged, and the safety performance is improved; is beneficial to the safety of human body; the installation and maintenance are convenient; the design is reasonable and simple, the use is convenient, and the response is quick and sensitive.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a rear view of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 with the upper housing removed;

fig. 5 is a schematic structural diagram of a metal dome.

In the figure: 1. the novel LED lamp comprises a protective shell, 2, a first pin, 3, a second pin, 4, a metal elastic sheet, 5, a movable contact, 6, a fixture block, 7, a slot, 8, a button, 9, a fixed contact, 10, an upper shell, 11, a lower shell, 12, a sliding block, 13, a sliding groove, 14, a supporting plate, 15, a top plate, 16, an L-shaped groove, 17, a first mounting groove, 18, a second mounting groove, 19, a through hole, 20, a substrate, 21, a first side plate, 22, a second side plate, 23, a third side plate and 24, and a welding point.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

In the embodiment shown in fig. 1, 2 and 3, an overload protector comprises a protective shell 1, a first pin 2 and a second pin 3, as shown in fig. 4, a metal spring 4 is arranged in the protective shell 1, a movable contact 5 is arranged on the metal spring 4, one end of the metal spring 4 is provided with a fixture block 6, the fixture block 6 is connected with the side wall of the protective shell 1 in a vertical sliding manner, the bottom of the fixture block 6 is provided with a slot 7 matched with the metal spring 4, the metal spring 4 is detachably connected with the fixture block 6 through the slot 7, the top of the fixture block 6 is provided with a button 8, the top of the button 8 penetrates through the top of the protective shell 1 and is located outside the protective shell 1, the bottom of the button 8 is located in the protective shell 1 and is fixedly connected with the fixture block 6, the other end of the metal spring 4 is fixedly connected with the first pin 2, one end of the first pin 2 is fixedly, one end of the second pin 3 is provided with a static contact 9 corresponding to the moving contact 5 and is installed in the protective shell 1, and the other end of the second pin 3 penetrates through the bottom of the protective shell 1 and is located outside the protective shell 1.

As shown in fig. 1 and 2, the protective housing 1 includes an upper housing 10 and a lower housing 11, the top of the lower housing 11 is detachably connected to the upper housing 10 and forms a closed cavity, as shown in fig. 4, the metal elastic sheet 4 and the fixture block 6 are both located in the cavity, the top of the button 8 penetrates through the upper housing 10 and is located outside the cavity, the bottom of the button 8 is located in the cavity, one end of the pin i 2, which is fixedly connected to the metal elastic sheet 4, and one end of the pin ii 3, which is provided with the static contact 9, are both installed in the cavity, and the other end of the pin i 2 and the other end of the pin ii 3 both penetrate through the bottom of the lower housing 11 and.

As shown in fig. 4, a slider 12 is arranged on the lower housing 11, the slider 12 is located in the cavity and is fixedly connected with the side wall of the lower housing 11, a sliding groove 13 matched with the slider 12 is arranged at the bottom of the button 8, the top of the slider 12 penetrates through the fixture block 6 and is located in the sliding groove 13, the fixture block 6 and the button 8 are both installed in the lower housing 11 through the sliding groove 13 and the slider 12 in a matched manner, and are both connected with the lower housing 11 in an up-and-down sliding manner, a support plate 14 is arranged at the bottom of the slider 12, one end of the support plate 14 is fixedly connected with the slider 12 and is perpendicular to the same.

As shown in fig. 4, a top plate 15 is arranged at the top of the clamping block 6 and is perpendicular to the clamping block 6, the clamping block 6 is fixedly connected with the bottom of the button 8 through the top plate 15, the top of the sliding block 12 penetrates through the top plate 15 and is connected with the button 8 in a vertically sliding mode through the sliding groove 13, an L-shaped groove 16 is formed in the bottom of the clamping block 6, one side of the L-shaped groove 16 is parallel to the support plate 14 and is in contact with the support plate 14, and the slot 7 is located on the other side of the L-. The shape of the first pin 2 and the shape of the second pin 3 are both L-shaped, one edge of the first pin 2 is fixedly connected with the metal elastic sheet 4 and is located in the cavity, the other edge of the first pin 2 penetrates through the lower shell 11 and is located outside the cavity, one edge of the second pin 3 is located in the cavity, the static contact 9 is located on one edge of the second pin 3, and the other edge of the second pin 3 penetrates through the lower shell 11 and is located outside the cavity.

As shown in fig. 4, a first mounting groove 17 and a second mounting groove 18 are formed in the lower housing 11, one edge of the first pin 2 fixedly connected with the metal elastic sheet 4 is mounted in the first mounting groove 17, a through hole 19 matched with the static contact 9 is formed in the side wall of the second mounting groove 18, one edge of the second pin 3 provided with the static contact 9 is mounted in the second mounting groove 18, and the static contact 9 penetrates through the through hole 19 and contacts with the movable contact 5.

As shown in fig. 5, the metal elastic sheet 4 is E-shaped, the metal elastic sheet 4 is formed by integrally molding a substrate 20, a first side piece 21, a second side piece 22 and a third side piece 23, which are all perpendicular to the substrate 20, the second side piece 22 is located between the first side piece 21 and the third side piece 23, the movable contact 5 is located on the second side piece 22, the length of the second side piece 22 is smaller than that of the first side piece 21 and that of the third side piece 23 respectively, two welding points 24 are arranged on one edge of the first pin 2, one end of the first side piece 21 is fixedly connected with the substrate 20, the other end of the first side piece 21 is fixedly connected with the first pin 2 through one of the welding points 24, one end of the third side piece 23 is fixedly connected with the substrate 20, and the other end of the third side piece. The distance between the two welding points 24 on the first pin 2 is smaller than the distance between the first side piece 21 and the third side piece 23.

The first pin 2 is electrically connected with a power supply, the second pin 3 is electrically connected with equipment, when the circuit is switched on, the moving contact 5 on the second side plate 22 of the metal elastic sheet 4 and the static contact 9 on the second pin 3 are in a contact state, the current of the power supply sequentially flows into the equipment through the first pin 2, the metal elastic sheet 4 and the second pin 3, and if an overload phenomenon occurs, the metal elastic sheet 4 deforms, so that the moving contact 5 on the second side plate 22 is automatically separated from the static contact 9 on the second pin 3, the current is switched off, and the equipment is protected from being damaged; in addition, a user can also manually control the on or off of the circuit through the button 8, and the button 8 drives the metal elastic sheet 4 to act through the fixture block, so that the movable contact 5 on the second side plate 22 is automatically contacted with or separated from the fixed contact 9 on the second pin 3.

Claims

1. An overload protector is characterized by comprising a protective shell (1), a first pin (2) and a second pin (3), wherein a metal elastic sheet (4) is arranged in the protective shell (1), a moving contact (5) is arranged on the metal elastic sheet (4), a clamping block (6) is arranged at one end of the metal elastic sheet (4), the clamping block (6) is in up-and-down sliding connection with the side wall of the protective shell (1), an inserting groove (7) matched with the metal elastic sheet (4) is formed in the bottom of the clamping block (6), the metal elastic sheet (4) is detachably connected with the clamping block (6) through the inserting groove (7), a button (8) is arranged at the top of the clamping block (6), the top of the button (8) penetrates through the protective shell (1) and is located outside the protective shell (1), the bottom of the button (8) is located in the protective shell (1) and is fixedly connected, the other end of the metal elastic sheet (4) is fixedly connected with the first pin (2), one end of the first pin (2) is fixedly connected with the metal elastic sheet (4), the other end of the first pin (2) penetrates through the bottom of the protective shell (1) and is located outside the protective shell (1), one end of the second pin (3) is provided with a static contact (9) corresponding to the moving contact (5) and is installed in the protective shell (1), and the other end of the second pin (3) penetrates through the bottom of the protective shell (1) and is located outside the protective shell (1).

2. The overload protector according to claim 1, wherein the protective shell (1) comprises an upper shell (10) and a lower shell (11), the top of the lower shell (11) is detachably connected with the upper shell (10) to form a closed cavity, the metal elastic sheet (4) and the fixture block (6) are both located in the cavity, the top of the button (8) penetrates through the upper shell (10) and is located outside the cavity, the bottom of the button (8) is located in the cavity, one end of the first pin (2) fixedly connected with the metal elastic sheet (4) and one end of the second pin (3) provided with the fixed contact (9) are both installed in the cavity, and the other end of the first pin (2) and the other end of the second pin (3) both penetrate through the bottom of the lower shell (11) and are located outside the cavity.

3. An overload protector according to claim 2, wherein a sliding block (12) is arranged on the lower shell (11), the sliding block (12) is positioned in the cavity and fixedly connected with the side wall of the lower shell (11), a sliding groove (13) matched with the sliding block (12) is arranged at the bottom of the button (8), a clamping block (6) penetrating through the top of the sliding block (12) is positioned in the sliding groove (13), the clamping block (6) and the button (8) are both installed in the lower shell (11) through the sliding groove (13) and the sliding block (12) in a matched manner and are both connected with the lower shell (11) in a vertical sliding manner, a supporting plate (14) is arranged at the bottom of the sliding block (12), one end of the supporting plate (14) is fixedly connected with the sliding block (12) and is perpendicular to the sliding block, and the other end of the supporting plate (14) is connected with the clamping block.

4. An overload protector according to claim 3, wherein the top of the clamping block (6) is provided with a top plate (15) and is perpendicular to the clamping block (6), the clamping block (6) is fixedly connected with the bottom of the button (8) through the top plate (15), the top of the sliding block (12) penetrates through the top plate (15) and is connected with the button (8) in a vertical sliding mode through the sliding groove (13), the bottom of the clamping block (6) is provided with an L-shaped groove (16), one side of the L-shaped groove (16) is parallel to the supporting plate (14) and is in contact with the supporting plate (14), and the inserting groove (7) is located on the other side of the L-shaped groove (16).

5. The overload protector according to claim 2, wherein the first pin (2) and the second pin (3) are both L-shaped, one edge of the first pin (2) is fixedly connected with the metal elastic sheet (4) and is located in the cavity, the other edge of the first pin (2) penetrates through the lower shell (11) and is located outside the cavity, one edge of the second pin (3) is located in the cavity, the fixed contact (9) is located on one edge of the second pin (3), and the other edge of the second pin (3) penetrates through the lower shell (11) and is located outside the cavity.

6. The overload protector according to claim 5, wherein a first mounting groove (17) and a second mounting groove (18) are formed in the lower shell (11), one edge of the first pin (2) fixedly connected with the metal elastic sheet (4) is mounted in the first mounting groove (17), a through hole (19) matched with the static contact (9) is formed in the side wall of the second mounting groove (18), one edge of the second pin (3) provided with the static contact (9) is mounted in the second mounting groove (18), and the static contact (9) penetrates through the through hole (19) and is in contact with the movable contact (5).

7. The overload protector according to claim 5 or 6, wherein the metal elastic sheet (4) is E-shaped, the metal elastic sheet (4) is formed by integrally molding a substrate (20) and a first side sheet (21), a second side sheet (22) and a third side sheet (23) which are perpendicular to the substrate (20), the second side sheet (22) is positioned between the first side sheet (21) and the third side sheet (23), the movable contact (5) is positioned on the second side sheet (22), the length of the second side sheet (22) is smaller than that of the first side sheet (21) and that of the third side sheet (23), two welding points (24) are arranged on one edge of the first pin (2), one end of the first side sheet (21) is fixedly connected with the substrate (20), and the other end of the first side sheet (21) is fixedly connected with the first pin (2) through one of the welding points (24), one end of the third side piece (23) is fixedly connected with the substrate (20), and the other end of the third side piece (23) is fixedly connected with the first pin (2) through another welding point (24).

8. An overload protector according to claim 7 in which the distance between the two solder joints (24) on the first leg (2) is less than the distance between the first side piece (21) and the third side piece (23).