CN219800752U

CN219800752U - Thermal overload relay

Info

Publication number: CN219800752U
Application number: CN202321004852.9U
Authority: CN
Inventors: 陈晓翊; 卓琴侠; 王远
Original assignee: ANDELI GROUP CO LTD
Current assignee: ANDELI GROUP CO LTD
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-10-03
Anticipated expiration: 2033-04-26

Abstract

The utility model provides a thermal overload relay which comprises a base, a wiring terminal and a conductive bar, wherein the wiring terminal and the conductive bar are fixedly arranged on the base, the conductive bar is connected with the wiring terminal and is fixed on the base through a screw, a cylindrical part which is arranged around the screw and is higher than the screw is arranged on the base, and a first jack for inserting a screw driver is formed in the cylindrical part. Because the blocking of cylindricality spare, maintainer's hand just is difficult for touching the screw, compares with the mode that prior art sheltered from the screw through the apron, and like this the structure is simpler, and manufacturing cost is lower.

Description

Thermal overload relay

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to a thermal overload relay.

Background

The thermal overload relay is used for protecting the motor, when working current flowing through the motor is overloaded, the bimetallic strip is bent and transmitted to the tripping mechanism through the displacement transmission device, so that the thermal switching device trips, and the aim of protecting the motor is fulfilled.

As shown in fig. 6, the existing thermal overload relay includes a base 01, a connection terminal 02 and a switching copper bar 03, the switching copper bar 03 is connected with the connection terminal 01, and is fixed on the base 01 through a screw 04, since the screw 04 is exposed on the base 01, a hand of a maintainer is easy to be subjected to electric shock by mistake, and a cover plate 05 for shielding the screw is further arranged on the base 01, so that the assembly process is complex, and the production cost of the cover plate is increased.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects of complex assembly procedures and high production cost of the thermal overload relay in the prior art, thereby providing the thermal overload relay with simple structure and low production cost.

The utility model provides a thermal overload relay which comprises a base, a wiring terminal and a conductive bar, wherein the wiring terminal and the conductive bar are fixedly arranged on the base, the conductive bar is connected with the wiring terminal and is fixed on the base through a screw, a cylindrical piece which is arranged around the screw and is higher than the screw is arranged on the base, and a first insertion hole for inserting a screw driver is formed in the cylindrical piece.

The columnar member and the base are integrally injection molded.

The base is provided with an installation cavity suitable for installing the wiring terminal, a first opening and a second opening which are arranged on the upper side and the front side of the installation cavity, and inverted buckles which are propped against the wiring terminal are arranged on two side walls of the second opening.

The base is provided with a terminal cover suitable for shielding the wiring terminal, and the terminal cover comprises a first cover plate part positioned at the first opening and a second cover plate part positioned at the second opening.

The terminal cover is assembled with the base through an elastic hook structure, the elastic hook structure comprises a hanging hole arranged on the base, and a first hook arranged on the terminal cover and connected with the hanging hole in a hanging mode, and the first hook extends along the horizontal direction.

The terminal cover is assembled with the base through an inserting structure, and the inserting structure comprises a first slot arranged on two side walls of the base mounting cavity and an inserting block arranged on the terminal cover and in adaptive inserting connection with the first slot.

The connecting terminals are multiple, a partition plate is arranged between every two adjacent connecting terminals, and a second slot for the partition plate to be inserted is formed in the terminal cover.

And the second cover plate part is provided with an avoidance groove which is arranged corresponding to the back-off.

The first cover plate part is provided with a second opening corresponding to the wiring terminal, and the second cover plate part is provided with an opening groove for inserting an external lead.

Elastic arms are formed on two sides of the opening groove, a blocking rib is arranged at the bottom of the second opening of the mounting cavity, the blocking rib is provided with a guide inclined plane which is arranged at the front end of the blocking rib and used for elastic deformation of the elastic arms, and a step which is propped against the blocking rib is arranged at the bottom of the elastic arms.

The technical scheme of the utility model has the following advantages:

1. the base is provided with the cylindrical part which is arranged around the screw and is higher than the screw, so that a hand of a maintainer is not easy to touch the screw.

2. According to the thermal overload relay provided by the utility model, the columnar part and the base are integrally injection molded, so that the part of the cover plate in the prior art is reduced, and the assembly is faster and more convenient.

3. The terminal cover is assembled with the base through the elastic hook structure, the elastic hook structure comprises the hanging hole arranged on the base and the first hook which is arranged on the terminal cover and is hooked and connected with the hanging hole, the first hook extends along the horizontal direction, the terminal cover is horizontally inserted from the front of the base during assembly, the first hook is hooked and connected with the hanging hole, and the first hook and the hanging hole which are matched with each other have the advantages of being simple in structure and rapid and convenient to assemble.

4. According to the thermal overload relay provided by the utility model, the elastic arms are formed on two sides of the opening groove, the blocking ribs are arranged at the bottom of the second opening of the mounting cavity, the blocking ribs are provided with the guide inclined planes which are arranged at the front ends of the blocking ribs and are used for elastically deforming the elastic arms, the bottoms of the elastic arms are provided with the steps which are propped against the blocking ribs, and when the terminal cover is horizontally inserted from the front of the base, the elastic arms can elastically deform along the guide inclined planes and span the blocking ribs, and then the steps of the elastic arms can prop against the back surfaces of the blocking ribs, so that the terminal cover is prevented from falling off relative to the base.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a thermal overload relay of the present utility model;

FIG. 2 is a perspective view of a base;

FIG. 3 is a schematic view of the base and cover plate in a disassembled state;

FIG. 4 is a perspective view of a cover plate;

FIG. 5 is a schematic view of an assembly of terminals, conductors and screws;

fig. 6 is a schematic diagram of an explosion structure of a thermal overload relay in the prior art.

Reference numerals illustrate: 01. a base; 02. a connection terminal; 03. switching copper bars; 04. a screw; 05. a cover plate;

1. a base; 2. a connection terminal; 3. a conductive bar; 4. a screw; 5. a columnar member; 6. a first jack; 7. a mounting cavity; 8. a first opening; 9. a second opening; 10. reversing; 11. a first cover plate portion; 12. a second cover plate portion; 13. a terminal cover; 14. a hanging hole; 15. a first hook; 16. a first slot; 17. inserting blocks; 18. a partition plate; 19. a second slot; 20. an avoidance groove; 21. an open slot; 22. a second opening; 23. an elastic arm; 24. a blocking rib; 25. a guide slope; 26. a step.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

The present embodiment provides a thermal overload relay, as shown in fig. 3 and 4, including a base 1, a connection terminal 2, a conductive bar 3, and a terminal cover 4.

The base 1 is provided with a wiring terminal 2 and a conductive bar 3 which are fixed on the base 1, the conductive bar 3 is connected with the wiring terminal 2 and is fixed on the base 1 through a screw 4, the base 1 is integrally injection-molded with a column-shaped piece 5 which is arranged around the screw 4 and is higher than the screw 4, and the column-shaped piece 5 is molded with a first jack 6 for inserting a screw driver. The base 1 is provided with a mounting cavity 7 suitable for mounting the wiring terminal 2, a first opening 8 and a second opening 9 which are arranged on the upper side and the front side of the mounting cavity 7, and inverted buckles 10 which are propped against the wiring terminal 2 are arranged on two side walls of the second opening 9. In this embodiment, three terminals 2 are provided, a partition 18 is disposed between two adjacent terminals 2, and a second slot 19 into which the partition 18 is inserted is formed in the terminal cover 13.

The terminal cover 13 is disposed on the base 1 and adapted to cover the connection terminal 2, as shown in fig. 3 and 4, the terminal cover 13 includes a first cover plate portion 11 located in the first opening 8, and a second cover plate portion 12 located in the second opening 9, the first cover plate portion 11 is formed with a second opening 22 disposed corresponding to the connection terminal 2, and the second cover plate portion 12 is formed with an open slot 21 for inserting an external wire. The terminal cover 13 is assembled with the base 1 through an elastic hook structure, the elastic hook structure comprises a hanging hole 14 arranged on the base 1, and a first hook 15 arranged on the terminal cover 13 and in hooking connection with the hanging hole 14, and the first hook 15 extends along the horizontal direction; the terminal cover 13 is assembled with the base 1 through an inserting structure, and the inserting structure comprises a first inserting groove 16 arranged on two side walls of the mounting cavity 7 of the base 1 and an inserting block 17 arranged on the terminal cover 13 and inserted with the first inserting groove 16 in an adapting way; the second cover plate 12 is formed with a recess 20 corresponding to the back-off 10. Elastic arms 23 are formed on two sides of the opening groove 21, a blocking rib 24 is arranged at the bottom of the second opening 9 of the mounting cavity 7, the blocking rib 24 is provided with a guide inclined plane 25 which is arranged at the front end of the blocking rib and is used for elastically deforming the elastic arms 23, and a step 26 which is propped against the blocking rib 24 is arranged at the bottom of the elastic arms 23.

According to the thermal overload relay provided by the utility model, the base 1 is provided with the cylindrical part 5 which is arranged around the screw 4 and is higher than the screw 4, so that a hand of a maintainer is not easy to touch the screw, and compared with the mode that the screw is shielded by the cover plate in the prior art, the thermal overload relay is simpler in structure and lower in production cost.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The utility model provides a thermal overload relay, its characterized in that, includes base (1), and fixed locating binding post (2) and conducting strip (3) on base (1), conducting strip (3) with binding post (2) link to each other, and are fixed in on base (1) through screw (4), have on base (1) around screw (4) setting, and high cylindricality piece (5) that are higher than screw (4), cylindricality piece (5) shaping has first jack (6) that supply screwdriver to insert.

2. A thermal overload relay according to claim 1, characterised in that the cylindrical element (5) and the base (1) are moulded by integral injection moulding.

3. A thermal overload relay according to claim 1 or 2, characterised in that the base (1) has a mounting cavity (7) adapted to mount the terminal (2), and a first opening (8) and a second opening (9) provided on the upper and front sides of the mounting cavity (7), the second opening (9) being provided on both side walls with a back-off (10) against the terminal (2).

4. A thermal overload relay according to claim 3, characterised in that the base (1) is provided with a terminal cover (13) adapted to shield the terminal (2), the terminal cover (13) comprising a first cover part (11) located at the first opening (8) and a second cover part (12) located at the second opening (9).

5. A thermal overload relay according to claim 4, characterised in that the terminal cover (13) is assembled with the base (1) by means of a resilient hooking structure comprising a hooking hole (14) provided on the base (1), and a first hook (15) provided on the terminal cover (13) in hooking connection with the hooking hole (14), the first hook (15) extending in a horizontal direction.

6. A thermal overload relay according to claim 4 or 5, characterised in that the terminal cover (13) is assembled with the base (1) by means of a plug-in structure comprising first slots (16) provided on both side walls of the mounting cavity (7) of the base (1), and plug-in blocks (17) provided on the terminal cover (13) adapted to plug-in with the first slots (16).

7. A thermal overload relay according to claim 4, wherein a plurality of the connection terminals (2) are provided, a partition (18) is provided between two adjacent connection terminals (2), and the terminal cover (13) is formed with a second slot (19) into which the partition (18) is inserted.

8. The thermal overload relay according to claim 4, wherein the second cover plate portion (12) is formed with a relief groove (20) provided corresponding to the back-off (10).

9. A thermal overload relay according to claim 4, wherein the first cover part (11) is formed with a second opening (22) corresponding to the connection terminal (2), and the second cover part (12) is formed with an open slot (21) for inserting an external wire.

10. The thermal overload relay according to claim 9, wherein elastic arms (23) are formed on two sides of the opening groove (21), a blocking rib (24) is arranged at the bottom of the second opening (9) of the installation cavity (7), the blocking rib (24) is provided with a guide inclined plane (25) which is arranged at the front end of the blocking rib and is used for elastically deforming the elastic arms (23), and a step (26) which is propped against the blocking rib (24) is arranged at the bottom of the elastic arms (23).