CN117153622A

CN117153622A - High-current small-volume kick type temperature controller

Info

Publication number: CN117153622A
Application number: CN202310690355.7A
Authority: CN
Inventors: 陈永钧; 冼崇礼
Original assignee: Foshan Tongbao Hualong Controls Co ltd
Current assignee: Foshan Tongbao Hualong Controls Co ltd
Priority date: 2023-06-10
Filing date: 2023-06-10
Publication date: 2023-12-01
Anticipated expiration: 2043-06-10
Also published as: CN117153622B

Abstract

The utility model relates to a large-current small-volume kick type temperature controller, which relates to the field of temperature controllers and comprises a shell, an upper seat arranged at the upper end of the shell, and a temperature sensing disc arranged at the upper seat, wherein the temperature sensing disc is provided with a push rod which is in sliding connection with one end of the upper seat, two terminals are arranged in the shell, fixed contacts are arranged on the terminals, an elastic piece is arranged at the inner bottom of the shell, a bridge passing piece is arranged at one end of the elastic piece, which is close to the push rod, and two moving contacts matched with the fixed contacts are arranged on the bridge passing piece. The bridge piece and the elastic piece are matched for use, so that the elastic piece can provide enough elastic force, and the bridge piece can increase the upper limit of the passing current.

Description

High-current small-volume kick type temperature controller

Technical Field

The utility model relates to the field of temperature controllers, in particular to a large-current small-volume kick type temperature controller.

Background

The kick type temperature controller is a small temperature controller with a shell, and is widely applied to small electric appliances such as disinfection cupboards, electric heating water boiling bottles, coffee kettles, electronic shoe supports, microwave ovens, water dispensers, electric hair dryers, electric heating furnaces, electric irons, clothes dryers, dust collectors, hot water bags and the like for temperature control or temperature protection.

The Chinese patent with the bulletin number of CN203205341U discloses a kick temperature controller, which comprises a cover body, a shell, a fixed terminal and a movable terminal which can be electrically connected to an electric heating loop, and a fixed contact and a movable contact which are used for controlling the electric heating loop to be closed/opened, wherein the fixed terminal is integrally formed and comprises a fixed plate part and a first terminal part which are electrically connected with the fixed contact, the movable terminal is integrally formed and comprises a movable spring part and a second terminal part which are fixedly and electrically connected with the movable contact, the movable contact can be arranged below the fixed contact along with the movable spring part in a vertically moving way, and when the movable contact contacts with the fixed contact, the electric heating loop is closed; when the moving contact is disconnected with the fixed contact, the electric heating loop is disconnected. The utility model realizes the improvement of the conductivity of the kick temperature controller, the temperature control is quicker, the production cost is saved, and the product quality control is convenient.

In view of the above-described related art, the inventors considered that the moving blade portion performs both functions of passing current and providing resilience to the moving contact, and if the moving blade portion is intended to pass a larger current, it is necessary to increase the thickness of the moving blade portion, but after the thickness is increased, the resilience of the moving blade portion easily exceeds the thrust of the disc, so that both cannot be obtained.

Disclosure of Invention

In order to improve the maximum current which can be born and provide proper elasticity, the utility model provides a large-current small-volume snap-action temperature controller.

The utility model provides a large-current small-volume kick temperature controller, which adopts the following technical scheme:

the utility model provides a small snap-action temperature controller of heavy current, includes the casing, set up in the upper seat of casing upper end, set up in the temperature sensing disc of upper seat, the temperature sensing disc be provided with upper seat one end sliding connection's ejector pin, be provided with two terminals in the casing, be provided with the fixed contact on the terminal, be provided with the elastic component in the casing, the one end that the elastic component is close to the ejector pin is provided with the bridge piece, be provided with on the bridge piece with fixed contact complex two moving contact.

By adopting the technical scheme, when the temperature of the temperature-sensing disc is higher than the preset temperature, the temperature-sensing disc drives the ejector rod to press down, so that the elastic piece is compressed, and the two terminals are intermittently connected; when the temperature is lower than the preset temperature, the temperature-sensing disc is restored to be original, and the movable contact is contacted with the fixed contact again under the action of the elastic force of the elastic piece. The scheme adopts the cooperation of bridge piece and elastic component to use, can the elastic component provide sufficient elasticity, and the upper limit of the electric current that the bridge piece can increase and pass through.

Optionally, the mounting groove that is used for installing the elastic component has been seted up in the casing, two spacing grooves have been seted up to the mounting groove lateral wall, the slip is provided with the shutoff subassembly that is used for shutoff spacing groove notch in the spacing groove, it all is provided with the end piece to cross bridge piece both ends, the end piece bottom is provided with the small-size gasbag with shutoff subassembly contact, the ejector pin is provided with the push rod that promotes the shutoff subassembly shrink when pushing down, the height of push rod bottom is less than the height of ejector pin bottom.

Through adopting above-mentioned technical scheme, when the temperature is less than predetermined temperature, the temperature sensing disc resumes the former state, and under the elastic force effect of elastic component, the bridge piece is little to rise, when the high minimum that is higher than the shutoff board top surface of small-size gasbag bottom, can continue to upwards promote the bridge piece a section distance, when the moving contact of bridge piece contacts the fixed contact, the elastic component is exerted on the bridge piece elasticity very little, makes small-size gasbag compressed, small-size gasbag and elastic component exert elasticity to the bridge piece jointly.

Optionally, the horizontal groove has been seted up to the spacing groove lateral wall, the shutoff subassembly including set up in shutoff spring and sliding connection in the horizontal groove and one end and shutoff spring coupling's shutoff board, the shutoff board is used for shutoff spacing groove notch, the push rod bottom is the wedge setting, the push rod is used for promoting shutoff board horizontal movement.

Through adopting above-mentioned technical scheme, when the high minimum that is higher than the shutoff board top surface in small-size gasbag bottom, under the elastic force effect of shutoff spring and the cooperation on shutoff board top inclined plane, can continue to upwards promote and cross bridge piece a section distance, when the moving contact of bridge piece contacted the fixed contact, the elastic force that the elastic component was applyed on crossing the bridge piece is very little, and shutoff spring can continue to outwards promote the shutoff board, makes the shutoff board can block up the spacing groove notch again.

Optionally, the bottom of the shell is provided with an adjusting component, the adjusting component comprises a bottom plate, an end plate and a screw rod, the bottom plate is slidably connected in the mounting groove and connected with the elastic piece, the end plate is arranged at the end part of the bottom plate, the screw rod is rotationally connected to the bottom of the shell, and the screw rod is in threaded connection with the end plate.

Through adopting above-mentioned technical scheme, when the elastic component appears the condition that elastic force is not enough owing to ageing, can increase the height of bottom plate, make the elastic component provide sufficient elasticity for when crossing the bridge piece and upwards move.

Optionally, the elastic component is the spring, be provided with the telescopic link on the bottom plate, the elastic component cover is located the elastic component outside, the one end that the bottom plate was kept away from to the telescopic link is provided with the roof, the elastic component both ends are connected with bottom plate and roof respectively.

Through adopting above-mentioned technical scheme, the setting of telescopic link can provide spacingly for the flexible of elastic component, makes the phenomenon of buckling be difficult for appearing in the elastic component, improves the life of elastic component.

Optionally, two push rods are arranged, the two push rods are arranged in a staggered mode, the inclined planes at the bottoms of the two push rods face opposite directions, and the movement directions of the two plugging plates are opposite.

By adopting the technical scheme, when the end pieces are pressed down, the phenomenon that the same end of the two end pieces is stressed to cause the bridge passing piece to deviate during movement is not easy to occur.

Optionally, one side of the plugging plate, which is close to the small air bag, is obliquely arranged, the inclined plane at the top of the plugging plate faces to a position far away from the plugging spring, and the oblique directions of the two plugging plates are opposite.

Through adopting above-mentioned technical scheme for the inclined plane at shutoff board top can be better with the inclined plane cooperation of wedge bottom, stability when guaranteeing the motion.

Optionally, the end plate sets up to two, two end slots that supply the end plate to stretch into are seted up to the mounting groove inside wall, one of them the end inslot is provided with the gag lever post, gag lever post and end plate sliding connection.

Through adopting above-mentioned technical scheme, the setting of end tank and gag lever post can provide the direction to the motion of bottom plate, improves stability.

Optionally, the shutoff board is close to one side rotation of small-size gasbag and is provided with a plurality of leading wheels.

Through adopting above-mentioned technical scheme, when the shutoff board motion, the leading wheel can rotate to reduce the frictional force between shutoff board and the small-size gasbag.

Optionally, a cover body for covering the upper seat in is clamped at the top of the shell.

Through adopting above-mentioned technical scheme, can realize the detachable connection of lid, be convenient for change and overhaul the casing internals.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when the temperature of the temperature-sensing disc is higher than the preset temperature, the temperature-sensing disc drives the ejector rod to press down, so that the elastic piece is compressed, and the two terminals are connected intermittently; when the temperature is lower than the preset temperature, the temperature-sensing disc is restored to be original, and the movable contact is contacted with the fixed contact again under the action of the elastic force of the elastic piece;

2. when the movable contact of the bridge crossing plate contacts the fixed contact, the elastic force exerted on the bridge crossing plate by the elastic piece is very small, so that the small air bag is compressed, and the small air bag and the elastic piece exert elastic force on the bridge crossing plate together, thereby reducing the ageing phenomenon of the elastic piece when the elastic piece is required to provide a large elastic force for a long time;

3. when the elastic piece is aged and has insufficient elastic force, the height of the bottom plate can be increased, so that the elastic piece can provide enough elastic force for the upward movement of the bridge passing piece.

Drawings

FIG. 1 is a schematic diagram of a high current, low volume snap-action thermostat;

FIG. 2 is an exploded view of a high current, low volume snap-action thermostat;

FIG. 3 is a cross-sectional view of a housing of a high current low volume snap-action thermostat;

FIG. 4 is a schematic illustration of a shutoff assembly of a high current low volume snap-through thermostat;

fig. 5 is a schematic view of an adjustment assembly of a high current low volume snap-action thermostat.

Reference numerals illustrate: 1. a housing; 2. an upper seat; 3. a temperature-sensitive disc; 4. a bump; 5. a cover body; 6. a clasp; 7. a push rod; 8. a terminal; 9. a fixed contact; 10. a mounting groove; 11. an elastic member; 12. a bridging piece; 13. a moving contact; 14. a limit groove; 15. a horizontal slot; 16. an end piece; 17. a small-sized air bag; 18. a push rod; 19. a blocking spring; 20. a plugging plate; 21. wedge blocks; 22. a guide wheel; 23. a bottom plate; 24. an end plate; 25. a screw rod; 26. an end groove; 27. a limit rod; 28. a telescopic rod; 29. and a top plate.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a large-current small-volume kick temperature controller. Referring to fig. 1 and 2, the sudden jump formula temperature controller of heavy current small volume includes casing 1, upper seat 2 and temperature sensing disc 3, upper seat 2 is located casing 1 top, upper seat 2 lower extreme and casing 1 upper end laminating, the position integrated into one piece that the casing 1 outside is close to upper seat 2 has a plurality of lugs 4, lid 5 is installed at casing 1 top, lid 5 tip integrated into one piece has the snap ring 6 that is the binding off setting, and snap ring 6 cooperates with lug 4 joint, in order to realize the joint cooperation between lid 5 and the casing 1, and lid 5 will go up seat 2 lid and close in casing 1.

Referring to fig. 2 and 3, the upper seat 2 is circularly arranged, the temperature sensing disc 3 is fixed at the top of the upper seat 2, the temperature sensing disc 3 is circularly arranged as well, a space for deformation of the temperature sensing disc 3 is integrally formed at the top of the upper seat 2, the bottom of the temperature sensing disc 3 is fixed with a push rod 7, and the push rod 7 penetrates through the upper end and the lower end of the upper seat 2 and is in sliding connection with the upper seat 2. Two terminals 8 are fixed inside the shell 1, the two terminals 8 are respectively connected with an external circuit, fixed contacts 9 are fixedly connected on the terminals 8, a mounting groove 10 is formed in the inner bottom of the shell 1, an elastic piece 11 is mounted in the mounting groove 10, a bridge piece 12 is mounted at one end of the elastic piece 11, which is close to the ejector rod 7, two movable contacts 13 are mounted at one end of the bridge piece 12, which is close to the fixed contacts 9, and the two fixed contacts 9 are respectively matched with the two fixed contacts 9. In this embodiment, the elastic member 11 may be a spring or a shrapnel.

When the temperature of the temperature-sensing disc 3 is higher than the preset temperature, the temperature-sensing disc 3 drives the ejector rod 7 to push down, so that the ejector rod 7 pushes down the bridge piece 12 and the elastic piece 11 is compressed, thereby intermittently connecting the two terminals 8 and realizing circuit protection; when the temperature is lower than the preset temperature, the temperature-sensing disc 3 is restored to be original shape and drives the ejector rod 7 to move upwards, and the movable contact 13 is contacted with the fixed contact 9 again under the action of the elastic force of the elastic piece 11, so that the circuit is communicated. The scheme adopts the cooperation of the bridging piece 12 and the elastic piece 11 to use, so that the elastic piece 11 can provide enough elastic force, and the bridging piece 12 can increase the upper limit of the passing current.

Preferably, two limiting grooves 14 are formed in the side wall of the mounting groove 10, the limiting grooves 14 penetrate through the upper end of the shell 1, a horizontal groove 15 is formed in the side wall of the limiting groove 14, a plugging assembly is mounted in the horizontal groove 15, and the plugging assembly can plug the notch of the limiting groove 14. Both ends of the bridge piece 12, which are close to the limiting groove 14, are respectively fixed with an end piece 16, the end pieces 16 are in sliding connection with the limiting groove 14, the bottom of each end piece 16 is fixedly connected with a small air bag 17, and the end pieces 16 and the small air bags 17 are respectively positioned above the plugging assembly. Two push rods 18 are fixed on the outer side of the push rod 7, and the bottom of each push rod 18 is lower than the bottom of the push rod 7.

Referring to fig. 3 and 4, the plugging assembly includes a plugging spring 19 and a plugging plate 20, the plugging spring 19 is horizontally fixed in the horizontal groove 15, the length direction of the plugging spring 19 is parallel to the opening direction of the horizontal groove 15, the plugging plate 20 is slidably connected in the horizontal groove 15, the plugging plate 20 can horizontally slide along the opening direction of the horizontal groove 15, and one end of the plugging spring 19 is fixed with the plugging plate 20. Under the action of the elastic force of the blocking spring 19, the blocking spring 19 can push the blocking plate 20 to block the notch of the limiting groove 14. The bottom of the push rod 18 is arranged in a wedge shape, and forms a wedge block 21, and the inclined surface of the bottom of the wedge block 21 faces to a position close to the notch of the horizontal groove 15. The side of the plugging plate 20 close to the small air bag 17 is obliquely arranged, and the inclined plane at the top of the plugging plate 20 faces to a position far away from the plugging spring 19.

It should be noted that, when the inside of the housing 1 is at a normal temperature, the blocking plate 20 blocks the notch of the limiting groove 14, at this time, the bottom of the small air bag 17 contacts with the top of the blocking plate 20, and the small air bag 17 is in a compressed state, so as to provide the elastic force for the bridge piece 12, so that the elastic force required to be provided by the elastic member 11 can be reduced, and only a small part of the elastic force needs to be provided by the elastic member 11, so that the aging phenomenon of the elastic member 11 due to the fact that the elastic member is in a state of being required to provide a large elastic force for a long time can be reduced.

When the inside of the shell 1 exceeds the preset temperature, the ejector rod 7 drives the wedge block 21 to press downwards through the push rod 18, and under the cooperation of the inclined surface of the wedge block 21 and the plugging plate 20, the plugging plate 20 can be gradually pushed into the horizontal groove 15, so that the end piece 16 and the small air bag 17 can gradually extend into the limit groove 14, and enough space is provided for the movement of the bridge piece 12. When the temperature is lower than the preset temperature, the temperature-sensitive disc 3 is restored to be original shape and drives the ejector rod 7 to move upwards, the bridge passing plate 12 is lifted up by a small extent under the action of the elastic force of the elastic piece 11, when the bottom of the miniature air bag 17 is higher than the lowest position of the top surface of the blocking plate 20, the bridge passing plate 12 can be pushed upwards for a certain distance under the action of the elastic force of the blocking spring 19 and under the cooperation of the inclined surface at the top of the blocking plate 20, when the movable contact 13 of the bridge passing plate 12 contacts the fixed contact 9, the elastic piece 11 exerts small elastic force on the bridge passing plate 12, at the moment, the blocking spring 19 can continuously push the blocking plate 20 outwards, the blocking plate 20 can block the notch of the limiting groove 14 again, the miniature air bag 17 is compressed, and the miniature air bag 17 and the elastic piece 11 exert elastic force on the bridge passing plate 12 together.

Further, the two push rods 18 are arranged in a staggered manner, the inclined surfaces of the wedge-shaped blocks 21 at the bottoms of the two push rods 18 face opposite, the two plugging plates 20 are also arranged in a staggered manner, the inclined directions of the two plugging plates 20 are opposite, and when the two push rods 18 are pressed down, the movement directions of the two plugging plates 20 are opposite. By the arrangement, when the end pieces 16 are pressed down, the phenomenon that the same ends of the two end pieces 16 are stressed to enable the bridge pieces 12 to shift is not easy to occur.

Preferably, one side of the plugging plate 20, which is close to the small air bag 17, is provided with a plurality of arc grooves, a plurality of guide wheels 22 are rotatably arranged in the arc grooves, and the upper ends of the guide wheels 22 protrude out of the top surface of the plugging plate 20. When the plugging plate 20 moves, the guide wheel 22 can rotate to reduce the friction force between the plugging plate 20 and the small air bag 17, and the small air bag 17 can be protected.

Referring to fig. 5, an adjusting component is installed at the bottom of the housing 1, the adjusting component includes a bottom plate 23, end plates 24 and a screw rod 25, the bottom plate 23 is slidably connected to the bottom of the mounting groove 10, the bottom plate 23 is located at the bottom of the elastic element 11, the bottom of the elastic element 11 is fixedly connected with the bottom plate 23, two end plates 24 are respectively fixed at two ends of the bottom plate 23, two end grooves 26 into which the end plates 24 extend are provided on the inner side wall of the mounting groove 10, the end plates 24 are slidably connected with the end grooves 26, the screw rod 25 is rotatably connected in one of the end grooves 26, one end of the screw rod 25 far from the end grooves 26 penetrates and extends out of the bottom of the housing 1, a knob is fixed, the screw rod 25 penetrates one of the end plates 24 and is in threaded connection with the end plate 24, a limit rod 27 is fixed in the other end groove 26, and the limit rod 27 is slidably connected with the other end plate 24.

Through knob rotation lead screw 25, under the spacing effect of gag lever post 27, can adjust the height of bottom plate 23 to adjust the height of elastic component 11 lower extreme, thereby can adjust the elastic component 11 and can be for the elasticity that bridge piece 12 provided, when the elastic component 11 appears the condition that the elastic force is insufficient because of ageing, can increase the height of bottom plate 23, make elastic component 11 can provide sufficient elasticity for bridge piece 12 when upwards moving.

Preferably, the top of the bottom plate 23 is fixed with a telescopic rod 28, one end of the telescopic rod 28 away from the bottom plate 23 is fixed with a top plate 29, the telescopic rod 28 is located inside the elastic member 11, and it should be noted that the top plate 29 is in contact with the bridge piece 12 but not fixedly connected. The setting of telescopic link 28 can provide spacing for the flexible of elastic component 11, makes the phenomenon of buckling be difficult for appearing in elastic component 11, improves elastic component 11's life. Because the top plate 29 is not fixedly connected with the bridge passing piece 12, the position of the bridge passing piece 12 is not easily affected when the bottom height of the elastic piece 11 is adjusted.

The implementation principle of the large-current small-volume kick temperature controller provided by the embodiment of the utility model is as follows: this scheme adopts bridge piece 12 and elastic component 11 cooperation to use, can elastic component 11 can provide enough elasticity, and bridge piece 12 can increase the upper limit of the electric current that passes through, when casing 1 inside is in normal temperature, shutoff board 20 shutoff spacing groove 14 notch, at this moment, small-size gasbag 17 bottom and shutoff board 20 top contact, small-size gasbag 17 still is in compressed state moreover, thereby for bridge piece 12 provides the elasticity, can reduce the elasticity that elastic component 11 needs to provide, make elastic component 11 only need provide little elasticity can, thereby can reduce elastic component 11 because long-term be in and produce ageing phenomenon easily when needs provide great elastic force effect.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a small-volume snap-action temperature controller of heavy current, includes casing (1), set up in upper seat (2) of casing (1) upper end, set up in temperature sensing disc (3) of upper seat (2), temperature sensing disc (3) be provided with upper seat (2) one end sliding connection's ejector pin (7), its characterized in that: two terminals (8) are arranged in the shell (1), fixed contacts (9) are arranged on the terminals (8), elastic pieces (11) are arranged at the bottoms of the shell (1), bridging pieces (12) are arranged at one ends, close to the ejector rods (7), of the elastic pieces (11), and two moving contacts (13) matched with the fixed contacts (9) are arranged on the bridging pieces (12).

2. A high current low volume snap-action thermostat according to claim 1, wherein: the utility model discloses a sealing device for a cable plug of a cable plug, including casing (1), mounting groove (10) that are used for installing elastic component (11) have been seted up in casing (1), two spacing groove (14) have been seted up to mounting groove (10) lateral wall, the slip is provided with the shutoff subassembly that is used for shutoff spacing groove (14) notch in spacing groove (14), bridge piece (12) both ends all are provided with end piece (16), end piece (16) bottom is provided with small-size gasbag (17) with shutoff subassembly contact, ejector pin (7) are provided with push rod (18) that promote shutoff subassembly shrink when pushing down, the height of push rod (18) bottom is less than the height of ejector pin (7) bottom.

3. A high current low volume snap-action thermostat according to claim 2, wherein: the side wall of the limit groove (14) is provided with a horizontal groove (15), the blocking component comprises a blocking spring (19) arranged in the horizontal groove (15) and a blocking plate (20) which is connected in the horizontal groove (15) in a sliding way and one end of which is connected with the blocking spring (19), the plugging plate (20) is used for plugging the notch of the limiting groove (14), the bottom of the push rod (18) is in a wedge-shaped arrangement, and the push rod (18) is used for pushing the plugging plate (20) to move horizontally.

4. A high current low volume snap-action thermostat according to claim 2, wherein: the bottom of the shell (1) is provided with an adjusting assembly, the adjusting assembly comprises a bottom plate (23) which is connected in the mounting groove (10) in a sliding mode and connected with the elastic piece (11), an end plate (24) arranged at the end of the bottom plate (23) and a screw rod (25) which is connected to the bottom of the shell (1) in a rotating mode, and the screw rod (25) is in threaded connection with the end plate (24).

5. The high current low volume snap-action thermostat of claim 4, wherein: the elastic piece (11) is a spring, the bottom plate (23) is provided with a telescopic rod (28), the elastic piece (11) is sleeved outside the elastic piece (11), one end, far away from the bottom plate (23), of the telescopic rod (28) is provided with a top plate (29), and two ends of the elastic piece (11) are respectively connected with the bottom plate (23) and the top plate (29).

6. A high current low volume snap-action thermostat according to claim 3, wherein: the two push rods (18) are arranged in a staggered mode, the inclined planes at the bottoms of the two push rods (18) face opposite directions, and the moving directions of the two plugging plates (20) are opposite.

7. A high current low volume snap-action thermostat according to claim 3, wherein: one side of the plugging plate (20) close to the small air bag (17) is obliquely arranged, the inclined plane at the top of the plugging plate (20) faces to the position far away from the plugging spring (19), and the inclination directions of the two plugging plates (20) are opposite.

8. The high current low volume snap-action thermostat of claim 4, wherein: the end plates (24) are arranged in two, two end grooves (26) for the end plates (24) to extend into are formed in the inner side walls of the mounting grooves (10), one end groove (26) is internally provided with a limiting rod (27), and the limiting rod (27) is in sliding connection with the end plates (24).

9. A high current low volume snap-action thermostat according to claim 3, wherein: a plurality of guide wheels (22) are rotatably arranged on one side, close to the small air bag (17), of the plugging plate (20).

10. A high current low volume snap-action thermostat according to claim 1, wherein: the top of the shell (1) is clamped with a cover body (5) which covers the upper seat (2) inside.