Shell structure of motor protector

Abstract

The utility model discloses a shell structure of a motor protector, which comprises a base, a shell cover and a baffle structure, the baffle structure is detachably arranged on the shell cover through a connecting structure, and the connecting structure comprises a plurality of connecting bulges which are arranged between the baffle structure and the shell cover and can be disconnected when being stressed, or a plurality of connecting bulges are arranged on the baffle structure. The connecting structure comprises a contact thin edge arranged between the baffle structure and the shell cover and a segmentation groove correspondingly formed in the contact thin edge; when an auxiliary contact needs to be mounted on the motor protector, an operator can break off the plurality of connecting bulges by hands or tools, so that the baffle plate structure can be detached from the shell cover, and a mounting socket for mounting the auxiliary contact is reserved on the shell cover; according to the shell cover adopting the technical scheme, the baffle structure can be detached or reserved according to the selection requirement of the auxiliary contact, so that only one set of mold is needed, the universality is good, the reduction of material inventory is facilitated, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor protectors, and particularly relates to a shell structure of a motor protector. Background Art

[0002] Motor protectors are used for the infrequent starting, overload protection, and short-circuit protection of motors or electric motors. In addition to the basic switch function for controlling the start / stop of the motor, existing motor or motor starters also require additional functions such as safety protection and control of the operating characteristics of the motor. Such motor protectors have short-circuit protection and overload protection functions. When the load is overloaded or single-phased, the bimetallic strip in the motor protector is heated and bent by a certain stroke to drive the operating mechanism in the motor protector to trip, thereby disconnecting the circuit to play an overload protection role; when the load is short-circuited, the electromagnetic release in the motor protector drives the iron core to act instantaneously to drive the operating mechanism to trip, thereby playing a short-circuit protection role.

[0003] Existing motor protectors mainly include a shell, an operating mechanism, a contact mechanism, a tripping mechanism, a setting current adjustment device, etc. When the motor protector needs to detect its start / stop working state, remote control signal, or implement interlock and blocking control for the electrical circuit, an auxiliary contact needs to be additionally installed on the motor protector. For this purpose, a jack position for installing the auxiliary contact needs to be opened at the top of the shell. The contact support of the contact mechanism is exactly located below the jack position and cooperates with the auxiliary contact. However, such a setting has the following problems: Existing motor protectors are selected to install or not install the auxiliary contact according to user needs. Obviously, there cannot be a socket position when the auxiliary contact is not installed. In this way, two sets of shell molds need to be opened, increasing the manufacturing cost, making the versatility of the product shell poor, not facilitating inventory management and production management, and resulting in an increase in management costs and production costs. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the present utility model is to overcome the problem that two sets of shells are required when selecting to install or not install the auxiliary contact for the existing motor protector, with poor versatility, inconvenient inventory management and production management, and increased production costs.

[0005] To solve the above technical problem, the present utility model provides a shell structure of a motor protector, including a base and a shell cover. A contact mechanism is arranged between the base and the shell cover. The shell cover includes a baffle structure that shields the upper part of the contact mechanism. The baffle structure is detachably arranged on the shell cover through a connection structure. After the baffle structure is removed from the shell cover, an installation socket for installing the auxiliary contact is formed. The connection structure includes a plurality of connection protrusions arranged between the baffle structure and the shell cover and that can be disconnected under force; or, the connection structure includes a contact thin edge arranged between the baffle structure and the shell cover and a cut groove correspondingly formed on the contact thin edge.

[0006] In the above-mentioned motor protector housing structure, the baffle structure and the mounting socket are respectively arranged to extend along the width direction of the housing cover, and a plurality of connecting protrusions are distributed at intervals around the baffle structure in the mounting socket.

[0007] In the above-mentioned motor protector housing structure, a plurality of partition grooves formed between the plurality of connecting protrusions are provided between the baffle structure and the housing cover.

[0008] In the above-mentioned motor protector housing structure, the housing cover includes a middle boss and two connecting parts respectively arranged on both sides of the middle boss. The mounting socket is opened on one of the connecting parts. The baffle structure is adaptively arranged in the mounting socket through a plurality of connecting protrusions, and the position of the baffle structure is flush with the port position of the mounting socket.

[0009] In the above-mentioned motor protector housing structure, the connecting protrusion is a triangular bump structure.

[0010] In the above-mentioned motor protector housing structure, the plurality of connecting protrusions include two groups of first protrusions respectively arranged on both side edges of the baffle structure. The two sides of the mounting socket correspond to two limiting walls connecting the middle boss and the connecting part, and the tips of the two groups of first protrusions are respectively connected to the two limiting walls.

[0011] In the above-mentioned motor protector housing structure, the plurality of connecting protrusions include two groups of second protrusions respectively arranged at the bottoms of both ends of the baffle structure. Two concave portions are formed at both ends of the mounting socket, and the tips of the two groups of second protrusions are respectively connected to the two concave portions.

[0012] In the above-mentioned motor protector housing structure, two mounting card holes located below the two concave portions are provided on both side walls of the housing cover. When the auxiliary contact is inserted into the mounting socket, a clamping fit is formed with the two mounting card holes.

[0013] In the above-mentioned motor protector housing structure, the housing cover, the baffle structure, and the plurality of connecting protrusions are integrally formed.

[0014] In the above-mentioned motor protector housing structure, a crank handle groove or a button groove is provided at the top of the housing cover.

[0015] The technical solution of the present utility model has the following advantages compared with the prior art:

[0016] 1. The motor protector housing structure provided by the present utility model has a baffle structure provided on the housing cover to shield the installation socket position. This baffle structure is detachably arranged on the housing cover. Specifically, there are multiple connecting protrusions that can be broken under force between the baffle structure and the housing cover. Although these connecting protrusions play a connecting role between the baffle structure and the housing cover, they will break naturally when subjected to greater stress. The advantage of this design is that when the motor protector needs to install auxiliary contacts, the operator can break the multiple connecting protrusions by hand or tool, so that the baffle structure can be removed from the housing cover, and thus an installation socket for installing auxiliary contacts is left at the position of the housing cover corresponding to the baffle structure. The whole removal process is simple and convenient. From the perspective of cost, the labor cost of removing this baffle is much lower than the material cost and management cost of designing two sets of housing cover molds, and the baffle structure can be removed or retained according to the selection requirements of the auxiliary contacts. Only one set of housing molds needs to be designed, which has good versatility and is more convenient to use, is conducive to reducing material inventory, and thus reduces costs.

[0017] 2. In the motor protector housing structure provided by the present utility model, there are various forms of connection between the baffle structure and the housing cover. Among them, a cutting groove can also be provided on the contact thin edge connected between the baffle structure and the housing cover. This cutting groove is designed along the contour shape of the contact thin edge. The thickness of this contact thin edge is made thinner. It can be seen that the position of the cutting groove is the weakest position between the baffle structure and the housing cover. Therefore, as long as a tool is used, the baffle structure can be easily removed from the housing cover as a whole, so that the baffle structure breaks along the position of the cutting groove when subjected to an external force and is removed, and thus an installation socket for installing auxiliary contacts is left on the housing cover. The whole removal process is relatively simple and convenient. The housing cover and the baffle structure of the baffle are integrally formed in this design, with strong integrity. The baffle structure can be removed or retained according to the selection requirements of the auxiliary contacts, which is more convenient to use, is conducive to reducing material inventory, facilitating inventory management and production management, and thus reduces costs.

[0018] 3. In the motor protector housing structure provided by the present utility model, multiple connecting protrusions are distributed at intervals around the baffle structure in the installation socket, and multiple partition grooves are provided between the baffle structure and the housing cover and formed between the multiple connecting protrusions. With this structural arrangement, the multiple connecting protrusions are separated by the multiple partition grooves respectively. The connecting stress points of these connecting protrusions are relatively weak and are easily broken when subjected to external stress. In this way, the baffle structure can be relatively easily removed from the housing along the positions of the multiple partition grooves and the connecting protrusions, and the disconnection boundary is clear and obvious.

[0019] 4. In the motor protector housing structure provided by the present utility model, after removing the baffle structure from the housing cover, the auxiliary contact is correspondingly inserted into the installation socket of the housing cover, so that the auxiliary contact is connected in cooperation with the contact support of the contact mechanism. By providing two installation card holes on the two side walls of the housing cover, and correspondingly providing installation buckles on both sides of the auxiliary contact, when the auxiliary contact is inserted into the installation socket, the two installation buckles are driven to form a snap-fit with the two installation card holes, thereby realizing the installation and fixation of the auxiliary contact on the motor protector, which is convenient for installation connection and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic plan view of the motor protector housing structure provided by the present utility model;

[0022] Figure 2 is a schematic three-dimensional view of the housing cover of the present utility model;

[0023] Figure 3 is Figure 2 a top view of the housing cover shown;

[0024] Figure 4 is a schematic three-dimensional view of another housing cover of the present utility model;

[0025] Figure 5 is Figure 4 a top view of the housing cover shown;

[0026] Figure 6 is a partial enlarged schematic view of the baffle structure of the present utility model;

[0027] Figure 7 is a schematic connection structure view of another mode of the baffle structure of the present utility model.

[0028] Explanation of reference numerals: 1, housing cover; 11, middle boss; 12, connecting part; 13, crank slot; 14, button slot; 2, base; 3, baffle structure; 4, installation socket; 41, concave part; 5, connecting protrusion; 51, first protrusion; 52, second protrusion; 6, dividing groove; 7, cutting groove; 8, installation card hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Embodiment

[0033] The following is a specific description of this embodiment in conjunction with the accompanying drawings:

[0034] This embodiment provides a motor protector housing structure as shown in Figures 1-7 which includes a base 2 and a housing cover 1. The motor protector includes a contact mechanism disposed between the base 2 and the housing cover 1. The housing cover 1 includes a baffle structure 3 that shields the contact mechanism. The baffle structure 3 is detachably disposed on the housing cover 1 through a connection structure. After removing the baffle structure 3 from the housing cover 1, an installation socket 4 for installing auxiliary contacts is formed. When the auxiliary contacts are inserted into the installation socket 4, they cooperate with the contact mechanism. The connection structure includes a plurality of connection protrusions 5 disposed between the baffle structure 3 and the housing cover 1 and that can be broken under force. The housing cover 1, the baffle structure 3, and the plurality of connection protrusions 5 are integrally formed.

[0035] The above implementation mode is the core technical solution of this embodiment. According to the baffle structure 3 covering the top of the contact mechanism provided on the shell cover 1, when the product is not equipped with auxiliary contacts, the baffle structure is used to cover the installation socket position. It has strong integrity and beautiful appearance. The baffle structure 3 is detachably arranged on the shell cover 1, specifically, it is connected between the baffle structure 3 and the shell cover 1 through multiple connecting protrusions 5. These connecting protrusions 5 play a connecting role between the baffle structure and the shell cover, but will naturally break when subjected to greater stress. The advantage of such a design is that when the motor protector needs to be installed with auxiliary contacts, the operator can break off the multiple connecting protrusions 5 by hand or with tools, so that the baffle structure 3 can be removed from the shell cover 1, thereby leaving a mounting socket 4 for installing the auxiliary contact at the position of the shell cover 1 corresponding to the baffle structure. The entire removal process is simple and convenient. From a cost perspective, the labor cost of removing the baffle is much lower than the material cost and management cost of designing two sets of shell cover molds, and the baffle structure can be removed or retained according to the optional requirements of the auxiliary contacts. Therefore, only one set of shell cover molds needs to be designed, which has good versatility and is relatively easy to use, which is conducive to reducing material inventory and thus reducing costs.

[0036] In this embodiment, the connection between the baffle structure 3 and the shell cover 1 can be in various forms. As an alternative to the above connection structure, refer to Figure 7 The connection structure includes a contact thin edge arranged between the baffle structure 3 and the shell cover 1 and a cutting groove 7 correspondingly formed on the contact thin edge. The cutting groove 7 is designed along the contour shape of the contact thin edge and surrounds the baffle structure. The thickness of this contact thin edge is made thinner. It can be seen that the position of the cutting groove 7 is the weakest position between the baffle structure 3 and the shell cover 1. When the auxiliary contact needs to be installed, the baffle structure 3 can be easily removed from the shell cover 1 as a whole with the help of tools, that is, the baffle structure 3 is disconnected along the cutting groove position when subjected to external force to achieve removal, thereby leaving a mounting socket 4 for installing the auxiliary contact on the shell cover 1. The entire removal process is relatively simple and convenient. The shell cover 1 and the baffle structure 3 designed in this way are formed as an integrated structure with strong integrity. The baffle structure 3 can also be removed or retained according to the auxiliary contact optional requirements, which is conducive to reducing material inventory and thus reducing costs. In addition, the connection structure can also adopt a snap-on structure or a plug-in structure to achieve a detachable connection between the baffle structure 3 and the shell cover 1. Those skilled in the art can choose the specific setting method of the connection structure based on the above description, and other equivalent implementation methods will not be described one by one here.

[0037] Combine the following Figures 1-3 , Figure 6 The specific setting method of the connecting protrusion is described in detail:

[0038] The baffle structure 3 and the mounting socket 4 are respectively arranged to extend along the width direction of the housing cover 1. Specifically, the baffle structure 3 is a square baffle, and a plurality of connecting protrusions 5 are distributed at intervals around the baffle structure 3 in the mounting socket 4. Among them, a plurality of partition grooves 6 formed between the plurality of connecting protrusions 5 are provided between the baffle structure 3 and the housing cover 1. With this structural arrangement, the plurality of connecting protrusions 5 are separated by the plurality of partition grooves 6 respectively. The connecting stress points of these connecting protrusions 5 are relatively weak and are easily broken when subjected to external stress. In this way, the baffle structure 3 can be relatively easily removed from the housing along the positions of the plurality of partition grooves 6 and the connecting protrusions 5, and the disconnection boundary is clear and obvious.

[0039] As Figure 6 shown, the housing cover 1 includes a middle boss 11 and two connecting parts 12 respectively arranged on both sides of the middle boss 11. The mounting socket 4 is opened on one of the connecting parts 12. The baffle structure 3 is adaptively arranged in the mounting socket 4 through a plurality of connecting protrusions 5. The baffle structure 3 is flush with the port position of the mounting socket 4. The connecting protrusion 5 is a triangular bump structure. The connecting protrusion 5 designed in such a triangular shape is easier to break and remove, which is convenient for removing the baffle structure 3 on the housing cover and at the same time is convenient for hollowing and cleaning around the mounting socket. As a specific structural arrangement, the plurality of connecting protrusions 5 include two groups of first protrusions 51 respectively arranged on both side edges of the baffle structure 3. Each group of first protrusions 51 includes at least one triangular bump. The two sides of the mounting socket 4 correspond to two limiting walls connecting the middle boss 11 and the connecting part 12. The tips of the two groups of first protrusions 51 are respectively connected to the two limiting walls. In addition, the plurality of connecting protrusions 5 further include two groups of second protrusions 52 respectively arranged at the bottoms of both ends of the baffle structure 3. Two concave parts 41 are formed at both ends of the mounting socket 4. The tips of the two groups of second protrusions 52 are respectively connected to the two concave parts 41. Each group of second protrusions 52 includes at least one triangular bump. With this structural arrangement, when prying or knocking the baffle structure by hand or a tool, the baffle structure 3 can be neatly cut along the positions of the first protrusions 51 and the second protrusions 52, and the removal is also easier. In this way, it will neither damage the housing cover, and at the same time, after removing the baffle structure, it can meet the installation requirements of the auxiliary contact.

[0040] In order to facilitate the installation of auxiliary contacts on the motor protector, the side walls of the shell cover 1 are provided with two mounting holes 8 located below the two concave parts, and corresponding mounting buckles that cooperate with the mounting holes 8 are provided on both sides of the auxiliary contacts (the auxiliary contacts are not shown in the attached figure). During installation, the baffle structure 3 is first removed from the shell cover 1, and then the auxiliary contacts are correspondingly inserted into the mounting sockets of the shell cover 1, so that when the auxiliary contacts are inserted into the mounting sockets 4, the two mounting buckles are driven to form a snap fit with the two mounting holes, thereby realizing the installation and fixation of the auxiliary contacts on the motor protector, and the installation connection is convenient, which is conducive to improving the installation efficiency. This auxiliary contact is connected to the contact support of the contact mechanism through the contact mechanism. When the contact mechanism opens and closes, the normally open contact and the normally closed contact of the auxiliary contact are driven to realize the on-off switching.

[0041] The motor protector provided in this embodiment includes a housing, an operating mechanism, a contact mechanism, a tripping mechanism, and a set current regulating device. The motor protector can be divided into a button type motor protector and a crank type motor protector according to different operating modes. Figures 1-3 The crank type motor protector shown in the figure realizes the opening and closing operation by swinging the crank. The crank, as a part of the operating mechanism, is rotatably arranged on the top of the shell cover. Correspondingly, a crank groove 13 suitable for the crank to extend is arranged on the top of the shell cover 1; Figures 4-5 The button-type motor protector shown in the figure realizes the opening and closing operation by pressing two buttons respectively. The two buttons are respectively a start button and a stop button set on the top of the shell cover. The operating mechanism includes a rotating cam rotatably set in the shell. The rotating cam is provided with two pressure rods respectively cooperating with the start button and the stop button. By pressing the button, the rotating cam can be driven to rotate a certain angle. Correspondingly, a button groove 14 suitable for installing two buttons is provided on the top of the shell cover 1, so that the buttons extend out of the top of the shell through the button groove. The shell covers of the above two motor protectors are both provided with a removable baffle structure, which can be well adapted to the installation and use of auxiliary contacts.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A motor protector housing structure, comprising a base (2) and a housing cover (1), characterized in that: The shell cover (1) includes a baffle structure (3) that shields the part above the contact mechanism. The baffle structure (3) is detachably arranged on the shell cover (1) through a connection structure. After the baffle structure (3) is removed from the shell cover (1), an installation socket (4) for installing auxiliary contacts is formed. The connection structure includes a plurality of connection protrusions (5) arranged between the baffle structure (3) and the shell cover (1) that can be broken under force; or, the connection structure includes a contact thin edge arranged between the baffle structure (3) and the shell cover (1) and a split groove (7) formed correspondingly on the contact thin edge.

2. The housing structure of a motor protector according to claim 1, wherein: The baffle structure (3) and the installation socket (4) are respectively arranged to extend along the width direction of the shell cover (1), and a plurality of connection protrusions (5) are spaced around the baffle structure (3) and distributed in the installation socket (4).

3. The housing structure of a motor protector according to claim 2, wherein: A plurality of partition grooves (6) formed between the plurality of connection protrusions (5) are arranged between the baffle structure (3) and the shell cover (1).

4. The housing structure of a motor protector according to any one of claims 1-3, characterized in that: The shell cover (1) includes an intermediate boss (11) and two connecting parts (12) respectively arranged on both sides of the intermediate boss (11). The installation socket (4) is opened on one of the connecting parts (12). The baffle structure (3) is arranged in the installation socket (4) through the adaptation of a plurality of connection protrusions (5), and the baffle structure (3) is flush with the port position of the installation socket (4).

5. The housing structure of a motor protector according to claim 4, characterized in that: The connection protrusion (5) is a triangular bump structure.

6. The housing structure of a motor protector according to claim 5, characterized in that: The plurality of connection protrusions (5) include two groups of first protrusions (51) respectively arranged on both side edges of the baffle structure (3). The two sides of the installation socket (4) correspond to two limiting walls connecting the intermediate boss (11) and the connecting part (12), and the tips of the two groups of first protrusions (51) are respectively connected to the two limiting walls.

7. The housing structure of a motor protector according to claim 6, wherein: The plurality of connection protrusions (5) include two groups of second protrusions (52) respectively arranged at the bottoms of both ends of the baffle structure (3). Two concave parts (41) are formed at both ends of the installation socket (4), and the tips of the two groups of second protrusions (52) are respectively connected to the two concave parts (41).

8. The housing structure of a motor protector according to any one of claims 5-7, characterized in that: Two installation clamping holes (8) located below the two concave parts are arranged on the two side walls of the shell cover (1). When the auxiliary contact is inserted into the installation socket (4), a clamping fit is formed with the two installation clamping holes (8).

9. The housing structure of a motor protector according to claim 1, wherein: The shell cover (1), the baffle structure (3), and the plurality of connection protrusions (5) are integrally formed.

10. The housing structure of a motor protector according to claim 9, characterized in that: A crank slot (13) or a button slot (14) is arranged on the top of the shell cover (1).

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