CN214542031U - Small-sized large-current temperature controller - Google Patents

Abstract

The utility model provides a small-size heavy current temperature controller relates to temperature controller technical field, and the main objective provides a novel heavy current temperature controller structure to the help reduces the temperature controller volume, makes it can be applicable to the higher occasion of volume requirement. The small-sized heavy-current temperature controller adopts a shrapnel-free design and comprises an end cover, a shell, a cover plate and a mandril; the two ends of the shell are provided with openings, the cover plate and the end covers are respectively positioned at the two ends of the shell and are fixedly connected with the shell, and one end of the ejector rod penetrates through the cover plate to be inserted into the shell and is fixedly connected with a disc positioned in the shell; the middle part of the shell is provided with a clapboard through which the ejector rod can penetrate, the clapboard divides the interior of the shell into a first accommodating cavity for accommodating a disc and a second accommodating cavity for accommodating the movable reed, the terminal and the elastic piece, and the ejector rod penetrates through the elastic piece and the movable reed; when the disc is deformed by heat, the push rod moves towards the direction far away from the first accommodating cavity, and the movable spring can synchronously move under the pressing action of the step structure and is separated from the terminal.

Description

Small-sized large-current temperature controller

Technical Field

The utility model belongs to the technical field of the temperature controller technique and specifically relates to a small-size heavy current temperature controller is related to.

Background

The bimetal kick type temperature control switch is a switch which drives a contact to be closed and opened by a bimetal sheet through external temperature change, is a particularly important safety product in the electrical industry, and is an important part for intelligent life. Along with modern commodity function is more and more, the commodity that the temperature controller was used is also more and more complicated, and the electric current that needs to bear is more and more high, and general heavy current temperature controller's volume is great, and inner structure is complicated, needs to use great bimetallic strip, and the response time that leads to the temperature sensing is generally longer, can't satisfy the protection of some special operating modes, for example, dry combustion method experiment etc.. In addition, the existing large-current temperature controller has a complex structure, so that the large-current temperature controller is large in size and difficult to apply to occasions with small requirements on size. And the temperature controller with large current generally has higher cost. At present, the small-volume temperature controller on the market can have the problems of overhigh temperature rise and shortened service life when bearing overlarge current, and can not meet the requirement of a large-current working condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size heavy current temperature controller to solve the problem that the heavy current temperature controller structure that exists is complicated, bulky among the prior art, make it can use some occasions that require to the volume higher. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

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

the utility model provides a small-sized heavy current temperature controller, which comprises an end cover, a shell, a cover plate and a mandril;

the shell is of a hollow tubular structure with openings at two ends in the axial direction, the cover plate and the end cover are respectively positioned at two ends of the shell and fixedly connected with the shell, and one end of the ejector rod penetrates through the cover plate and is inserted into the shell;

the middle part of the shell is provided with a partition plate through which the ejector rod can penetrate, the partition plate divides the inner part of the shell into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is connected with the end cover, the disc is positioned in the first accommodating cavity and fixedly connected with the ejector rod, and the outer peripheral side of the ejector rod is provided with a step structure;

an elastic piece, a movable reed for bearing current and a terminal are arranged in the second accommodating cavity, the ejector rod penetrates through the elastic piece and the movable reed, the movable reed is positioned on the step structure, and the elastic piece can push the movable reed to move towards the direction of attaching to the terminal;

when the disc is deformed by heat, the ejector rod moves towards the direction far away from the first accommodating cavity, and the movable spring can synchronously move under the pressing action of the step structure and is separated from the terminal.

This temperature controller adopts no shell fragment design, has cancelled traditional shell fragment structure, and overcurrent and the elasticity demand split that need satisfy traditional shell fragment are independent elastic component and movable contact spring structure, and wherein the elastic component is used for providing elasticity, and the movable contact spring is used for the supply current to pass through. The size of the temperature controller is effectively reduced through splitting two different requirements, and the adaptability of the temperature controller to a large-current working environment is guaranteed. When the temperature controller works normally, the movable reed is jointed and connected with the terminal under the combined action of the ejector rod and the elastic piece, and current flows through the terminal and the movable reed; when the temperature in the temperature controller rises to a critical point, the disc deforms and pushes the ejector rod to move, and at the moment, the movable spring can synchronously move under the extrusion action of the step structure of the ejector rod and is separated from the terminal.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

As a further improvement of the utility model, the ejector rods are arranged at two ends of the step structure and have different shapes. The design adds the fool-proof function to the ejector rod, and the design of the anti-fool device matched with other corresponding structures can provide feasibility for production, installation and automation.

As a further improvement of the present invention, a first position-limiting member is disposed on the partition plate, and the ejector rod can move along a fixed straight line only under the action of the first position-limiting member; and/or a second limiting part is arranged in the middle of the movable spring plate, and the second limiting part can limit the movable spring plate to rotate relative to the ejector rod.

Limiting action through first locating part and second locating part can help restriction ejector pin and movable reed to rotate, guarantees that this temperature controller movable reed can normal use when using, can not produce with the terminal and touch absolutely.

As a further improvement of the present invention, the terminal includes a first terminal and a second terminal, the first terminal and one end of the second terminal are inserted into the second accommodating chamber, and the other end is extended toward the outside of the housing.

The temperature controller adopts a double-breakpoint design, so that the analysis capability of the equipment is effectively improved, and the service life requirement in the case of high current is ensured.

As a further improvement of the present invention, the housing is recessed toward one side of the end cap to form a step hole, and the disc is located between the step hole and the end cap.

As a further improvement of the present invention, the cover plate is inserted in the housing by inserting the insertion means, and the outer side wall of the cover plate is formed with a recess for the first terminal and the second terminal to pass through, the number of the recesses is two and two the recesses are arranged relatively.

As a further improvement of the present invention, the first terminal and the second terminal have the same structure.

As a further improvement of the present invention, the first terminal and the second terminal each include a contact portion and an extension portion, the contact portion is used for being inserted into the thermostat, and the extension portion is located outside the thermostat; the contact portion is deflected toward the left or right side with respect to the extension portion; the contact part is provided with a contact which can be jointed and connected with a movable reed positioned in the temperature controller.

As a further improvement of the utility model, the contact is made by conductive metal, including fixed column and conducting layer, the fixed column through wear to establish the mode with contact site fixed connection, the conducting layer is located the fixed column is kept away from the one end of contact site.

As a further improvement of the present invention, a connecting portion is further provided between the contact portion and the extension portion, and upper and lower ends of the connecting portion are respectively connected to the contact portion and the extension portion.

As a further improvement of the present invention, the contact portion and the extension portion are parallel to each other.

As a further improvement of the present invention, the connecting portion is provided with an installation portion for cooperating with the temperature controller.

The structure of the mounting portion will be described in detail below:

as a further improvement of the present invention, the first terminal and/or the second terminal face towards the protruding first pothook that forms in the casing inner wall one side, the corresponding position of the casing inner wall is sunken to form the first clamping groove, work as the first terminal and/or when the corresponding position was inserted to the second terminal, the first pothook can just with the mutual block of first clamping groove.

As a further improvement of the present invention, the first terminal and/or the second terminal orientation the sunken second draw-in groove that forms in apron lateral wall one side, the protruding second pothook that forms of relevant position of the lateral wall of apron, work as the apron inserts during the relevant position of casing, the second pothook can just with the mutual block of second draw-in groove.

Casing, terminal and apron three in the above-mentioned structure the equipment of realization temperature controller that can convenient and fast's lock each other, ingenious utilization the inside limited space of temperature controller simultaneously, guaranteed the volume of temperature controller. In addition, the second clamping hook positioned on the shell not only plays a role in fixing and limiting the terminal, but also can help to improve the installation efficiency of the temperature controller, and when the temperature controller is installed, the terminal can easily fall onto a corresponding installation position only by loosening hands after the second clamping groove on the terminal is matched with the second clamping hook of the cover plate, and the position of the movable spring piece is matched with the position of the terminal at the moment.

As a further improvement of the present invention, the movable spring plate is a plate-shaped structure, the first terminal and the second terminal are located along the projection in the housing axis direction respectively at the two ends of the movable spring plate.

Compared with the prior art, the utility model provides a small-size heavy current temperature controller, this temperature controller include end cover, casing, apron, video disc, ejector pin, movable contact spring, elastic component and first terminal and second terminal. When the temperature controller is used, the disk is heated and deformed to generate sudden jump and push the ejector rod to move, the movable spring can be driven to be separated from the first terminal and the second terminal in the moving process of the ejector rod, the double breakpoints are simultaneously disconnected, and current is cut off to ensure the electricity safety. When resetting, only need through press expose at the outside ejector pin afterbody of product, make the bimetal piece become resume can, the movable contact spring no longer receives ejector pin pressure this moment, restores to initial position under the effect of elastic component, contacts on the contact terminal simultaneously, the switch-on current. Through reasonable layout design, the structure meets the requirements of temperature rise and product service life under the working of 30A high current on the premise of ensuring the same size, the same response time and the same corresponding temperature with the existing small temperature control appearance structure, and fills the current market blank. Additionally, the utility model discloses the effectual current heavy current temperature controller manufacturing cost that has reduced has simple structure, reliable, superior performance and with low costs multiple advantage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the small-sized heavy-current thermostat of the present invention in the power-on state;

FIG. 2 is a schematic structural view of the small-sized heavy-current thermostat of the present invention in a power-off state;

FIG. 3 is a schematic view showing the connection relationship between the terminal, the post rod and the movable spring plate in the small-sized heavy-current temperature controller of the present invention;

FIG. 4 is a schematic structural view of a housing of the small-sized heavy-current thermostat of the present invention;

FIG. 5 is a schematic structural view of a movable spring plate in the small-sized heavy-current thermostat of the present invention;

FIG. 6 is a schematic structural view of a post rod in the small-sized heavy-current thermostat of the present invention;

FIG. 7 is a schematic structural view of a terminal in the small-sized heavy-current thermostat of the present invention;

FIG. 8 is a schematic structural view of a cover plate in the small-sized heavy-current thermostat of the present invention;

fig. 9 is a schematic view of the overall structure of the small-sized large-current temperature controller of the present invention.

In the figure: 1. an end cap; 11. a disc; 2. a housing; 21. a partition plate; 211. a first limit piece; 22. a first accommodating chamber; 23. a second accommodating chamber; 24. a stepped bore; 25. a first card slot; 3. a cover plate; 31. a groove; 32. a second hook; 4. a top rod; 41. a step structure; 5. an elastic member; 6. a movable spring plate; 61. a second limiting member; 7. a first terminal; 71. a first contact; 8. a second terminal; 81. a second contact; 9. a first hook; 10. and a second card slot.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

FIG. 1 is a schematic structural view of the small-sized heavy-current temperature controller of the present invention in the power-on state; the temperature controller consists of an end cover, a shell, a disc, a push rod, a first terminal, a second terminal, a movable reed, an elastic piece and a cover plate from top to bottom in sequence, wherein the end cover is positioned at the upper end of the shell, the push rod penetrates through the cover plate to be connected with the disc positioned in the shell, and the shell, the first terminal, the second terminal and the cover plate are mutually buckled to finish the assembly of the temperature controller; the first terminal and the second terminal are both connected with the movable reed, and the temperature controller is in a conducting state at the moment.

FIG. 2 is a schematic structural view of the small-sized heavy-current temperature controller of the present invention in a power-off state; compared with the figure 1, the disc is deformed and jumps, the ejector rod pushes the movable spring piece to move under the action of the disc and separate from the first terminal and the second terminal, the double breakpoints are disconnected simultaneously, and the temperature controller is in a power-off state at the moment.

FIG. 3 is a schematic view showing the connection relationship between the terminal, the post rod and the movable spring plate in the small-sized heavy-current temperature controller of the present invention; as can be seen from the figure, the upper end and the lower end of the movable spring are respectively provided with the step structure of the ejector rod and the elastic piece, the movable spring is connected with the first terminal and the second terminal in an attaching mode under the combined action of the movable spring and the first terminal and the second terminal, and the double breakpoints are simultaneously connected.

FIG. 4 is a schematic structural diagram of a housing in the small-sized heavy-current temperature controller of the present invention; the casing is integrally of a hollow columnar structure, a partition plate for the ejector rod to penetrate through is arranged in the casing, the casing is divided into a first accommodating cavity and a second accommodating cavity by the partition plate, a step hole is formed in the end portion of the first accommodating cavity, the disc is located at the step hole, and the second accommodating cavity is used for accommodating the movable reed, the terminal and the like.

FIG. 5 is a schematic structural view of a movable spring plate in the small-sized heavy-current temperature controller of the present invention; the movable spring leaf is integrally of a sheet structure, a second limiting part is arranged in the middle of the movable spring leaf, the second limiting part is a hole matched with the corresponding part of the ejector rod in shape, the movable spring leaf can be prevented from rotating relative to the ejector rod under the action of the second limiting part, and normal use of the temperature controller is guaranteed.

FIG. 6 is a schematic structural view of a post rod in the small-sized heavy-current temperature controller of the present invention; one side of the ejector rod, which is close to the disc, is provided with a step structure, the ejector rod structures at two ends of the step structure are different, and one side of the ejector rod is matched with a first limiting piece on the partition plate, so that the ejector rod can not rotate on the premise of moving relative to the partition plate; the other side is used for cooperating with the second locating part that is located movable reed to guarantee that movable reed can not rotate for the ejector pin.

FIG. 7 is a schematic structural view of a terminal in the small-sized heavy-current temperature controller of the present invention; the terminal includes that the structure is unanimous basically or completely unanimous first terminal and second terminal, and wherein first terminal and second terminal all are folded plate column structure, and its one end that is located the casing is provided with and is used for the first contact and the second contact that link to each other with the movable contact spring, and first contact and second contact are made by conductive metal, including fixed column and conducting layer, the fixed column is through wearing to establish the mode and corresponding terminal fixed connection, and the conducting layer is located the fixed column and keeps away from the one end of terminal.

FIG. 8 is a schematic structural view of a cover plate in the small-sized heavy-current temperature controller of the present invention; the cover plate is of a hollow structure, the middle of the cover plate is used for the ejector rod to penetrate through, a space used for accommodating the elastic piece is arranged at one end inserted into the shell, and a groove and a second clamping hook structure which can be matched with the first terminal and the second terminal are arranged on the outer side wall of the cover plate.

FIG. 9 is a schematic view of the overall structure of the small-sized heavy-current temperature controller of the present invention; the temperature controller is integrally of a columnar structure, and the first terminal and the second terminal respectively extend towards opposite directions at one end of the temperature controller.

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

The utility model provides a small-sized heavy current temperature controller, which comprises an end cover 1, a shell 2, a cover plate 3 and a mandril 4; the shell 2 is a hollow tubular structure with openings at two ends in the axial direction, the cover plate 3 and the end cover 1 are respectively positioned at two ends of the shell 2 and fixedly connected with the shell 2, and one end of the ejector rod 4 penetrates through the cover plate 3 and is inserted into the shell 2; a partition plate 21 which can be penetrated by the ejector rod 4 is arranged in the middle of the shell 2, the partition plate 21 divides the interior of the shell 2 into a first accommodating cavity 22 and a second accommodating cavity 23, the first accommodating cavity 22 is connected with the end cover 1, the disc 11 is positioned in the first accommodating cavity 22 and fixedly connected with the ejector rod 4, and a step structure 41 is arranged on the outer peripheral side of the ejector rod 4; the second accommodating cavity 23 is internally provided with an elastic part 5, a movable reed 6 for bearing current and a terminal, the ejector rod 4 is arranged on the elastic part 5 and the movable reed 6 in a penetrating manner, the movable reed 6 is positioned at the step structure 41, and the elastic part 5 can push the movable reed 6 to move towards the direction of attaching to the terminal; when the disc 11 is deformed by heat, the push rod 4 moves away from the first accommodating cavity 22, and the movable spring 6 can synchronously move and separate from the terminal under the pressing action of the step structure 41.

This temperature controller adopts no shell fragment design, has cancelled traditional shell fragment structure, and overcurrent and the elasticity demand split that need satisfy traditional shell fragment are independent elastic component 5 and movable contact spring 6 structure, and wherein elastic component 5 is used for providing elasticity, and movable contact spring 6 is used for the supply current to pass through. The size of the temperature controller is effectively reduced through splitting two different requirements, and the adaptability of the temperature controller to a large-current working environment is guaranteed. When the temperature controller works normally, the movable reed 6 is jointed and connected with the terminal under the combined action of the ejector rod 4 and the elastic piece 5, and current flows through the terminal and the movable reed 6; when the temperature in the temperature controller rises to a critical point, the disc 11 deforms and pushes the ejector rod 4 to move, and at the moment, the movable spring 6 can synchronously move and separate from the terminal under the extrusion action of the step structure 41 of the ejector rod 4.

The working state of the thermostat is shown in fig. 1 and fig. 2. In the power-on state, the movable reed 6 is connected with the terminal to realize circuit conduction; when the temperature rises to the critical point, the disc 11 deforms to generate a kick and pushes the ejector rod 4 to move, and then the ejector rod 4 pushes the movable reed 6 to open so that the movable reed 6 is separated from the terminal, and the current is cut off. When the temperature of the temperature controller is reduced, the push rod 4 is pushed to enable the disc 11 to deform and recover, at the moment, the movable reed 6 is not pressed by the push rod 4 any more, the movable reed is pushed back to the initial position by the elastic force of the elastic piece 5, meanwhile, the movable reed 6 is connected with the terminal, and the current is conducted.

It should be noted that the rod 4 is made of an insulating material, and is generally made of a porcelain material.

In order to understand the working principle of the thermostat more clearly, as shown in fig. 3, the position relationship between the terminal and the movable spring 6 and the push rod 4 can be seen clearly.

Specifically, the partition 21 may be fixed in the housing 2 by means of clamping or screwing, or may be integrally disposed with the housing 2.

It should be noted that, in order to ensure that the temperature controller can work normally, the movable spring 6 is a sheet structure, and the projections of the first terminal 7 and the second terminal 8 along the axial direction of the housing 2 fall on the two ends of the movable spring 6 respectively, so as to ensure that the terminals can be attached to the movable spring 6.

Specifically, the movable spring 6 may be a bar, an oval or a circular structure on the premise of not affecting the normal operation of the temperature controller.

In addition, as an alternative embodiment, the side of the housing 2 facing the end cap 1 is recessed to form a stepped hole 24, and the disc 11 is located between the stepped hole 24 and the end cap 1. The structure can limit the moving range of the disc 11 and avoid affecting the normal use of the temperature controller.

As an alternative embodiment, the shape of the carrier rod 4 at both ends of the step structure 41 is different. The design adds the fool-proof function to the ejector rod 4, and the design matched with other corresponding structures can provide feasibility for production, installation and automation.

Specifically, as shown in fig. 6, one end of the lift pin 4 facing the disc 11 is of a cylindrical-like structure, the other end is of a prismatic structure, and the step structure 41 is located at the junction of the two.

As an optional embodiment, the partition plate 21 is provided with a first limiting member 211, and the top rod 4 can move only along a fixed straight line under the action of the first limiting member 211; and/or a second limiting piece 61 is arranged in the middle of the movable spring piece 6, and the second limiting piece 61 can limit the movable spring piece 6 to rotate relative to the ejector rod 4.

Limiting action through first locating part 211 and second locating part 61 can help limiting ejector pin 4 and movable reed 6 to rotate, guarantees that this temperature controller movable reed 6 can normal use when using, can not produce with the terminal and break and touch.

Specifically, as shown in fig. 4, the first limiting member 211 on the partition 21 structure in the middle of the temperature controller is a hole through which the common top rod 4 can pass, and the structure of the hole can be adapted to the top rod 4 and can limit the rotation of the top rod 4; similarly, as shown in fig. 5, the second limiting member 61 on the movable spring plate 6 is a hole structure matched with the polygonal prism structure of the top rod 4, and when the movable spring plate 6 is sleeved on the top rod 4, the movable spring plate 6 is limited by the second limiting member 61 and cannot rotate relative to the top rod 4.

As an alternative embodiment, the terminals include a first terminal 7 and a second terminal 8, and one end of each of the first terminal 7 and the second terminal 8 is inserted into the second accommodation chamber 23 and the other end thereof extends toward the outside of the housing 2.

The temperature controller adopts a double-breakpoint design, so that the analysis capability of the equipment is effectively improved, and the service life requirement in the case of high current is ensured.

Specifically, the first terminal 7 and the second terminal 8 can be connected to the housing 2 through the housing 2, and can also be fixed in the housing 2 by the structure of the housing 2 and the cover plate 3.

As an alternative embodiment, the cover plate 3 is inserted into the housing 2 by way of insertion, and grooves 31 for the first terminals 7 and the second terminals 8 to pass through are formed on the outer side wall of the cover plate 3 and are recessed inwards, the number of the grooves 31 is two, and the two grooves 31 are arranged oppositely.

As an alternative embodiment, the first terminal 7 and the second terminal 8 are identical in structure.

As shown in fig. 7, the first segment and the second terminal 8 have the same structure, and are both of a zigzag-like folded plate structure: the temperature controller comprises a contact part, a connecting part and an extending part, wherein the contact part is used for being inserted into the temperature controller, the extending part is positioned outside the temperature controller, the upper end and the lower end of the connecting part are respectively connected with the contact part and the extending part, and the connecting part is provided with an installation part which is used for being matched with the temperature controller; the contact part deflects towards the left side or the right side relative to the extension part to make a space for the movement of the mandril 4; the contact part is provided with a contact (the first terminal 7 is provided with a first contact 71, the second terminal 8 is provided with a second contact 81, the structures of the two are consistent), and the contact can be attached and connected with the movable reed 6 positioned in the temperature controller. Specifically, the contact is made by conductive metal, including fixed column and conducting layer, the fixed column is through wearing to establish mode and contact site fixed connection, and the conducting layer is located the fixed column and keeps away from the one end of contact site.

For ease of use, the contact portion and the extension portion are generally disposed parallel to each other.

The structure of the mounting portion will be described in detail below:

as an alternative embodiment, the first terminal 7 and/or the second terminal 8 protrudes toward one side of the inner side wall of the housing 2 to form a first hook 9, and a corresponding position of the inner side wall of the housing 2 is recessed to form a first slot 25, and when the first terminal 7 and/or the second terminal 8 are inserted into the corresponding position, the first hook 9 can be just engaged with the first slot 25.

As an alternative embodiment, the first terminal 7 and/or the second terminal 8 are recessed toward one side of the outer sidewall of the cover plate 3 to form the second card slot 10, and a corresponding position of the outer sidewall of the cover plate 3 is raised to form the second hook 32, so that when the cover plate 3 is inserted into a corresponding position of the housing 2, the second hook 32 can be just mutually engaged with the second card slot 10.

The structure of the cover plate 3 is shown in fig. 8, and its outer side is provided with a groove 31 and a second hook 32, and its upper top is provided with a space for accommodating the elastic element 5.

The mutual lock of casing 2, terminal and 3 three of apron in the above-mentioned structure can convenient and fast's the equipment of realization temperature controller, simultaneously ingenious utilization the inside limited space of temperature controller, guaranteed the volume of temperature controller. In addition, the second hook 32 on the housing 2 not only has the function of fixing and limiting the terminal, but also can help to improve the installation efficiency of the temperature controller, when the temperature controller is installed, the terminal can easily fall to a corresponding installation position only by loosening the hand after the second clamping groove 10 on the terminal is matched with the second hook 32 of the cover plate 3, and at the moment, the position of the movable spring 6 is matched with the position of the terminal.

Example 1:

the utility model provides a small-size heavy current temperature controller, including end cover 1, casing 2, apron 3, ejector pin 4, video disc 11, movable contact spring 6 and two terminal structures, wherein end cover 1, casing 2, terminal and 3 interconnect of apron constitute a cavity structure, have set gradually video disc 11, ejector pin 4 movable contact spring 6 and elastic component 5 (like spring structure) from top to bottom in this cavity. This temperature controller adopts no shell fragment design, and the overcurrent demand and the elasticity demand split in the traditional temperature controller are independent elastic component 5 and movable contact spring 6 structure, and wherein elastic component 5 is used for providing elasticity, and movable contact spring 6 is used for the supply current to pass through. The size of the temperature controller is effectively reduced through splitting two different requirements, and the adaptability of the temperature controller to a large-current working environment is guaranteed. When the temperature controller works normally, the movable reed 6 is jointed and connected with the terminal under the combined action of the ejector rod 4 and the elastic piece 5, and current flows through the terminal and the movable reed 6; when the temperature in the temperature controller rises to a critical point, the disc 11 deforms and pushes the ejector rod 4 to move, and at the moment, the movable spring 6 can synchronously move and separate from the terminal under the extrusion action of the step structure 41 of the ejector rod 4.

Example 2:

the present embodiment 2 is different from embodiment 1 in that: compare with embodiment 1, casing 2 and apron 3 directly link to each other through the joint structure this moment, are provided with the jack that supplies first terminal 7 and second terminal 8 to wear to establish on the lateral wall of casing 2 in addition, thereby first terminal 7 and second terminal 8 link to each other with casing 2 through this jack and fix on casing 2, avoid droing from casing 2.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A small-sized heavy-current temperature controller is characterized by comprising an end cover (1), a shell (2), a cover plate (3) and a top rod (4);

the shell (2) is of a hollow tubular structure with openings at two ends in the axial direction, the cover plate (3) and the end cover (1) are respectively positioned at two ends of the shell (2) and fixedly connected with the shell (2), and one end of the ejector rod (4) penetrates through the cover plate (3) and is inserted into the shell (2);

a partition plate (21) capable of allowing the ejector rod (4) to penetrate through is arranged in the middle of the shell (2), the partition plate (21) divides the interior of the shell (2) into a first accommodating cavity (22) and a second accommodating cavity (23), the first accommodating cavity (22) is connected with the end cover (1), a disc (11) is placed in the first accommodating cavity (22) and is fixedly connected with the ejector rod (4), and a step structure (41) is arranged on the outer peripheral side of the ejector rod (4);

an elastic part (5), a movable spring (6) for bearing current and a terminal are arranged in the second accommodating cavity (23), the ejector rod (4) penetrates through the elastic part (5) and the movable spring (6), the movable spring (6) is located at the step structure (41), and the elastic part (5) can push the movable spring (6) to move towards the direction of attaching to the terminal;

when the disc (11) is deformed by heat, the ejector rod (4) moves towards the direction far away from the first accommodating cavity (22), and the movable spring piece (6) can synchronously move under the pressing action of the step structure (41) and is separated from the terminal.

2. A small-sized large current thermostat according to claim 1, wherein the shapes of the push rods (4) at both ends of the step structure (41) are different.

3. A small-sized large current thermostat according to claim 1, wherein the partition plate (21) is provided with a first stopper (211), and the top rod (4) can move only along a fixed straight line under the action of the first stopper (211); and/or a second limiting piece (61) is arranged in the middle of the movable spring piece (6), and the movable spring piece (6) can be limited to rotate relative to the ejector rod (4) by the second limiting piece (61).

4. A small-sized high current thermostat according to claim 1, wherein the terminals comprise a first terminal (7) and a second terminal (8), one end of the first terminal (7) and one end of the second terminal (8) are inserted into the second receiving cavity (23), and the other ends of the first terminal and the second terminal are extended towards the outside of the housing (2).

5. A small-sized large current thermostat according to claim 4, characterized in that the first terminal (7) and the second terminal (8) are identical in structure.

6. A small-sized large current thermostat according to claim 4, wherein the first terminal (7) is attached to the movable spring plate (6) through a first contact (71), and the second terminal (8) is attached to the movable spring plate (6) through a second contact (81).

7. A small-sized large current thermostat according to claim 1, wherein the housing (2) is recessed toward the end cap (1) to form a stepped hole (24), and the disc (11) is located between the stepped hole (24) and the end cap (1).

8. A small-sized large current thermostat according to claim 4, wherein the cover plate (3) is inserted into the housing (2) by inserting and the outer side wall of the cover plate (3) is recessed inwards to form grooves (31) for the first terminal (7) and the second terminal (8) to pass through, and the number of the grooves (31) is two and the two grooves (31) are arranged oppositely.

9. A small-sized large current temperature controller according to claim 8, wherein the first terminal (7) and/or the second terminal (8) is/are protruded towards one side of the inner side wall of the housing (2) to form a first hook (9), the corresponding position of the inner side wall of the housing (2) is recessed to form a first slot (25), and when the first terminal (7) and/or the second terminal (8) is/are inserted into the corresponding position, the first hook (9) can be just mutually clamped with the first slot (25).

10. A small-sized large current temperature controller according to claim 8, wherein the first terminal (7) and/or the second terminal (8) is/are recessed towards one side of the outer side wall of the cover plate (3) to form a second locking groove (10), a corresponding position of the outer side wall of the cover plate (3) is raised to form a second locking hook (32), and when the cover plate (3) is inserted into a corresponding position of the housing (2), the second locking hook (32) can be just mutually locked with the second locking groove (10).

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