CN217333960U

CN217333960U - Thermal overload relay

Info

Publication number: CN217333960U
Application number: CN202220036825.9U
Authority: CN
Inventors: 陈建仁
Original assignee: Jiangsu Zhongren Electrical Co ltd
Current assignee: Jiangsu Zhongren Electrical Co ltd
Priority date: 2022-01-08
Filing date: 2022-01-08
Publication date: 2022-08-30
Anticipated expiration: 2032-01-08

Abstract

The application belongs to the technical field of thermal overload relays and discloses a thermal overload relay which comprises a box body, wherein two vertical plates are symmetrically arranged on the inner bottom wall of the box body, two bidirectional threaded pipes are movably arranged on the two vertical plates, threaded rods are movably connected to the left side and the right side of the inner part of each bidirectional threaded pipe, when the thermal overload relay needs to be disassembled and assembled, a rotating disc is rotated by hands to drive a rotating rod and a bevel gear II to rotate, the bevel gear II rotates to drive a bevel gear I and a bidirectional threaded sleeve to rotate, the two threaded sleeves rotate to enable the two threaded rods to move relatively, so that the opposite ends of the two threaded rods are free from limiting the rectangular pipe and the rectangular rod, the thermal overload relay body is convenient to disassemble and assemble, the aim of facilitating quick disassembly and assembly can be achieved, bolts are not needed for fixing, and workers are convenient to maintain the thermal relay body, time and labor are saved, and the maintenance progress is accelerated.

Description

Thermal overload relay

Technical Field

The application relates to the technical field of thermal overload relays, in particular to a thermal overload relay.

Background

The thermal overload relay is also called as a thermal relay, and the working principle is that the current of the current flowing into a thermal element generates heat, so that bimetallic strips with different expansion coefficients are deformed, and when the deformation reaches a certain distance, a connecting rod is pushed to act, so that a control circuit is disconnected, a contactor is powered off, a main circuit is disconnected, and the overload protection of a motor is realized.

The thermal overload relay is used as an overload protection element of the motor, and is widely applied in production with the advantages of small volume, simple structure, low cost and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides a thermal overload relay.

The technical scheme provided by the application is as follows: a thermal overload relay comprises a box body, wherein two vertical plates are symmetrically arranged on the inner bottom wall of the box body, two bidirectional threaded pipes are movably arranged on the two vertical plates, threaded rods are movably connected to the left and right sides of the inside of each bidirectional threaded pipe, rectangular pipes are symmetrically arranged on the opposite sides of the two vertical plates, rectangular rods are inserted into the two rectangular pipes, mounting plates are arranged at the tops of the two rectangular rods, a thermal overload relay body is mounted at the tops of the mounting plates through a first bolt, a first perforation is formed in each rectangular pipe, a second perforation is formed in each rectangular rod, the rectangular pipes and the rectangular rods are movably connected through the first perforation and the second perforation through the threaded rods, sliding blocks are arranged at the bottoms of the two threaded rods, sliding grooves matched with the sliding blocks are symmetrically formed in the inner bottom wall of the box body, and a driving mechanism is arranged in the box body, the heat dissipation holes are formed in the left end face and the right end face of the box body, and dustproof mechanisms are arranged at the positions, corresponding to the heat dissipation holes, of the left end face and the right end face of the box body.

Through the technical scheme, the thermal overload relay body is convenient to disassemble and assemble quickly, and the thermal overload relay is convenient for workers to overhaul and maintain.

Furthermore, the driving mechanism comprises a first bevel gear, a second bevel gear and a rotating rod, the first bevel gear is fixedly sleeved outside the bidirectional threaded pipe, the rotating rod is movably mounted on the front side wall of the box body, the second bevel gear is fixedly sleeved at one end of the rotating rod, a turntable is fixedly connected to the other end of the rotating rod, and the first bevel gear is meshed with the second bevel gear.

Through above-mentioned technical scheme, can drive two-way screwed pipe and rotate.

Furthermore, dustproof mechanism includes dustproof frame and dust screen, the dust screen sets up the inside of dustproof frame.

Through above-mentioned technical scheme, reduced the influence of dust to thermal overload relay.

Furthermore, the dustproof frame is installed with the box body through second bolts, eight bolts are arranged on the second bolts, and the eight bolts are arranged at four corners of the dustproof frame respectively.

Through above-mentioned technical scheme, conveniently dismantle washing and change the dust screen.

Furthermore, both ends all are provided with the support about the bottom of box, the mounting hole has been seted up on the support.

Through above-mentioned technical scheme, conveniently carry out fixed mounting to the box, stability when improving the box and using.

Furthermore, a movable door is movably arranged at the top of the box body through a rotating shaft.

Through above-mentioned technical scheme, open the dodge gate and conveniently get exothermic overload relay.

To sum up, the present application includes at least one of the following advantageous technical effects:

(1) this application is when needs carry out the dismouting to thermal overload relay, it rotates to drive bull stick and bevel gear two with the hand rotation carousel, bevel gear two rotates and drives bevel gear one and two-way thread bush and rotate, two-way thread bush rotates and makes two threaded rod relative movement (the rotatory power of the threaded rod has been restricted in the cooperation of slider and spout, thereby can make two threaded rod or relative movement in opposite directions), thereby make the spacing to rectangular pipe and rectangular rod be relieved to the back of the body one end of carrying on the back of the body of two threaded rods, thereby conveniently dismantle the thermal overload relay body, during the installation, reverse above-mentioned operation can, can reach the purpose of the quick assembly disassembly of being convenient for like this, need not to adopt the bolt to fix, made things convenient for the staff to maintain the thermal relay body, time saving and labor saving, progress when having accelerated the maintenance.

(2) This application has ensured the inside heat dissipation ventilation of box through the louvre, and inside the dust screen can prevent that the dust from entering into the box, has reduced the influence of dust to the heat overload relay body.

Drawings

Fig. 1 is a schematic diagram of a thermal overload relay according to the present application;

fig. 2 is a plan view showing a structure of a structural portion of a thermal overload relay according to the present application;

fig. 3 is an enlarged schematic view of a structure a in fig. 1 of a thermal overload relay according to the present application;

the reference numbers in the figures illustrate:

1. a box body; 2. a support; 3. a dust screen; 31. a dust-proof frame; 4. a vertical plate; 5. a slider; 6. a threaded rod; 7. a chute; 8. a bidirectional threaded pipe; 9. a first bevel gear; 10. a movable door; 11. mounting a plate; 12. a thermal overload relay body; 13. a rectangular tube; 14. a second bevel gear; 15. a rotating rod; 16. a rectangular bar.

Detailed Description

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the embodiments described are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments in the present application belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The embodiment is as follows:

the present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a thermal overload relay, which comprises a box body 1, wherein the front surface of the box body 1 is provided with a wire outlet, the inner bottom wall of the box body 1 is symmetrically provided with two vertical plates 4, the inside of the two vertical plates 4 is provided with a first bearing, a two-way threaded pipe 8 is movably inserted inside the first bearing, the two vertical plates 4 are movably provided with two-way threaded pipes 8, the left side and the right side of the inside of each two-way threaded pipe 8 are movably connected with threaded rods 6, the threads on the two threaded rods 6 are oppositely arranged, the threads on the left side and the right side of the inner wall of each two-way threaded pipe 8 are respectively matched with the threads on the outside of the two threaded rods 6, the two-way threaded pipes 8 are rotated by rotating a bevel gear I9, so that the two threaded rods 6 can relatively move, the opposite ends of the two threaded rods 6 are enabled to release the limit of a rectangular pipe 13 and a rectangular rod 16, and the thermal overload relay body 12 is convenient to disassemble, when in installation, the rectangular rod 16 is inserted into the rectangular tube 13, and then the rotating rod 15 is reversely screwed, so that one end of the threaded rod 6 limits and fixes the rectangular tube 13 and the rectangular rod 16, and the thermal overload relay body 12 can be installed, thereby achieving the purpose of being convenient for quick disassembly and assembly, being convenient for workers to maintain the thermal relay body without adopting bolts, saving time and labor, and accelerating the maintenance progress, the rectangular tubes 13 are symmetrically arranged on the opposite sides of the two vertical plates 4, the rectangular rods 16 are inserted into the two rectangular tubes 13, the mounting plates 11 are arranged at the tops of the two rectangular rods 16, the thermal overload relay body 12 is arranged at the top of the mounting plate 11 through the first bolt, the thermal overload relay body 12 is convenient to be separated from the mounting plates 11, the first threaded rod 13 is provided with a first perforation, the second perforation is arranged on the rectangular rod 16, the rectangular tubes 13 and the rectangular rods 16 are movably connected through the first perforation and the second perforation through the 6, the bottom of two threaded rods 6 all is provided with slider 5, and slider 5 removes in the inside of spout 7 for threaded rod 6 carries on the back mutually or relative movement, and the turning force of limiting threaded rod 6, spout 7 with 5 looks adaptations of slider is seted up to the inner diapire symmetry of box 1, and the inside of box 1 is provided with actuating mechanism, and the louvre has all been seted up to both ends face about box 1, and both ends face and the corresponding department of louvre all are provided with dustproof mechanism about box 1.

Referring to fig. 2, the driving mechanism includes a first bevel gear 9, a second bevel gear 14 and a rotating rod 15, the first bevel gear 9 is fixedly sleeved outside the bidirectional threaded pipe 8, the rotating rod 15 is movably mounted on the front side wall of the box body 1, the second bearing is mounted on the front side wall of the box body 1, the rotating rod 15 is movably inserted inside the second bearing, the second bevel gear 14 is fixedly sleeved at one end of the rotating rod 15, the other end of the rotating rod 15 is fixedly connected with a rotating disc, the rotating rod 15 is rotated by the rotating disc, the rotating rod 15 can drive the second bevel gear 14 to rotate, and the second bevel gear 14 can drive the first bevel gear 9 to rotate due to the meshing connection between the second bevel gear 14 and the first bevel gear 9.

Referring to fig. 1, the dustproof mechanism includes a dustproof frame 31 and a dustproof mesh 3, the dustproof mesh 3 is disposed inside the dustproof frame 31, and the dustproof mesh 3 can prevent dust from entering the box 1 through the heat dissipation holes, so as to reduce the influence of the dust on the thermal overload relay body 12 and prolong the service life of the thermal overload relay body.

Referring to fig. 1, the dust-proof frame 31 is mounted on the box body 1 through the second bolts, eight bolts are arranged on the second bolts, and are respectively arranged at four corners of the dust-proof frame 31, when the dust-proof net 3 is dirty, the second bolts can be screwed, the dust-proof frame 31 and the dust-proof net 3 can be detached from the box body 1, and the dust-proof net 3 can be cleaned and maintained conveniently.

Referring to fig. 1, the left end and the right end of the bottom of the box 1 are both provided with the supports 2, the supports 2 are provided with mounting holes, the box 1 is mounted on a wall by using the mounting holes on the supports 2, the stability of the box 1 is improved, and the supports 2 are L-shaped, so that the box 1 is not in contact with the wall, the box 1 is prevented from being affected by the damp of the wall, and further, the thermal overload relay body 12 is used.

Referring to fig. 1, a movable door 10 is movably installed at the top of a box 1 through a rotating shaft, and the heat overload relay body 12 is conveniently taken and placed by opening the movable door 10.

The implementation principle of the embodiment of the application is as follows: the rotating rod 15 is rotated by the turntable, the rotating rod 15 rotates to drive the bevel gear II 14 to rotate, the bevel gear II 14 rotates to drive the bevel gear I9 to rotate due to the meshed connection between the bevel gear II 14 and the bevel gear I9, the bevel gear I9 rotates to drive the bidirectional threaded pipe 8 to rotate, so that the two threaded rods 6 can move relatively, the opposite ends of the two threaded rods 6 are released from the limit of the rectangular tubes 13 and the rectangular rods 16, thereby facilitating the disassembly of the thermal overload relay body 12, inserting the rectangular rod 16 into the rectangular tube 13 during the installation, then the rotating rod 15 is turned reversely, so that one end of the threaded rod 6 limits and fixes the rectangular tube 13 and the rectangular rod 16, can install thermal overload relay body 12, can reach the purpose of the quick assembly disassembly of being convenient for like this, need not to adopt the bolt to fix, made things convenient for the staff to maintain the thermal relay body.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A thermal overload relay comprises a box body (1), and is characterized in that: the inner bottom wall of the box body (1) is symmetrically provided with two vertical plates (4), two vertical plates (4) are movably mounted with two-way threaded pipes (8), the left side and the right side of the inside of each two-way threaded pipe (8) are movably connected with threaded rods (6), the opposite sides of the two vertical plates (4) are symmetrically provided with rectangular pipes (13), the insides of the two rectangular pipes (13) are respectively spliced with a rectangular rod (16), the tops of the two rectangular rods (16) are provided with mounting plates (11), the tops of the mounting plates (11) are provided with heat overload relay bodies (12) through bolts I, the rectangular pipes (13) are provided with first through holes, the rectangular rods (16) are provided with second through holes, the rectangular pipes (13) and the rectangular rods (16) are movably connected with the first through holes and the second through holes through the threaded rods (6), the bottoms of the two threaded rods (6) are both provided with sliding blocks (5), the inner bottom wall symmetry of box (1) sets up spout (7) with slider (5) looks adaptation, the inside of box (1) is provided with actuating mechanism, the louvre has all been seted up to both ends face about box (1), both ends face and the corresponding department of louvre all are provided with dustproof mechanism about box (1).

2. A thermal overload relay according to claim 1, wherein: the driving mechanism comprises a first bevel gear (9), a second bevel gear (14) and a rotating rod (15), the first bevel gear (9) is sleeved outside the bidirectional threaded pipe (8), the rotating rod (15) is movably mounted on the front side wall of the box body (1), the second bevel gear (14) is fixedly sleeved at one end of the rotating rod (15), a turntable is fixedly connected to the other end of the rotating rod (15), and the first bevel gear (9) is meshed with the second bevel gear (14).

3. A thermal overload relay according to claim 1, wherein: the dustproof mechanism comprises a dustproof frame (31) and a dustproof net (3), and the dustproof net (3) is arranged inside the dustproof frame (31).

4. A thermal overload relay according to claim 3, wherein: the dustproof frame (31) is installed with the box body (1) through the second bolts, eight bolts are arranged on the second bolts, and the eight bolts are arranged at four corners of the dustproof frame (31) respectively.

5. A thermal overload relay according to claim 1, wherein: both ends all are provided with support (2) about the bottom of box (1), the mounting hole has been seted up on support (2).

6. A thermal overload relay according to claim 1 wherein: the top of the box body (1) is movably provided with a movable door (10) through a rotating shaft.