CN221304536U - Movable contact module and relay - Google Patents

Abstract

The utility model discloses a movable contact module and a relay, wherein the movable contact module is arranged in the relay and comprises a supporting seat, a supporting piece penetrating through the supporting seat, conductive connecting pieces arranged at two ends of the supporting piece in parallel at intervals and a movable contact arranged on the conductive connecting pieces, the supporting piece and the supporting seat are integrally injection molded, and the supporting seat is mutually clamped with a push rod of the relay. The movable contact module is simple in structure, small and exquisite, high in integration level, and capable of greatly improving the installation convenience and the installation efficiency of relay products, improving the load bearing capacity of the relay products and achieving miniaturization of the relay products.

Description

Movable contact module and relay

Technical Field

The utility model relates to the technical field of relays, in particular to a movable contact module and a relay.

Background

For relay products, low contact resistance, high blocking resistance are particularly important performance elements.

At present, relay products meeting the performance requirements on the market mostly adopt clapping relay structures, but the clapping relay is large in size, occupies more space in use and is not beneficial to the miniaturized design requirements of terminal products. In order to reduce the volume of products, the industry has already begun to improve the structure of relays, such as: the clapping relay structure is improved to a direct-acting relay structure. However, the direct-acting relay structure existing in the current market has the following defects in production and application:

1) When the conventional direct-acting relay product is assembled, a plurality of bulk parts are assembled one by one, so that the assembly is complicated, and the assembly precision of the product cannot be well ensured. 2) In the structure of the existing relay product, the connection mode between the push rod and the moving contact is mainly as follows: one end of the push rod is fixedly connected with a supporting seat, the bearing plate is connected with the supporting seat through a spring assembly (such as at least two springs), and a plurality of moving contacts are arranged on the bearing plate in a row. The connection mode is complex in assembly and causes great technical difficulty in realizing automatic production; and the volume is larger, which is unfavorable for the miniaturization development of relay products.

Disclosure of Invention

In order to overcome the defects, the utility model provides the movable contact module and the relay, and the movable contact module is simple and compact in structure and high in integration level, so that the installation convenience and the installation efficiency of a relay product can be greatly improved, the load bearing capacity of the relay product is improved, and the miniaturization of the relay product is realized.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a movable contact module for install in the relay, include the supporting seat, wear to locate the supporting part of supporting seat, parallel and the interval install in conductive connection spare at supporting part both ends and install in conductive connection spare's movable contact, the supporting part with the integrative injection moulding of supporting seat, the mutual joint of push rod of supporting seat and relay.

As a further improvement of the utility model, the supporting seat is made of insulating plastic material and comprises a boss for the supporting piece to penetrate through and a main body part fixedly connected with the push rod of the relay, and the size of the main body part along the length direction of the main body part is larger than that of the boss.

As a further improvement of the utility model, a fixed column is arranged in the boss, a through hole is arranged in the middle of the supporting piece along the length direction, and the fixed column penetrates through the through hole;

The main part is kept away from one side of boss is concave to be equipped with the recess, the recess diapire is equipped with the gliding sliding tray of confession relay push rod.

As a further improvement of the utility model, the supporting piece adopts a spring plate type structure and receives a plurality of moving contacts, and the supporting piece can also elastically deform under the pushing of the relay push rod so as to compress the moving contacts and the fixed contacts of the relay.

As a further improvement of the present utility model, the conductive connecting member is fixedly connected to the supporting member by any one of riveting, welding and fastening.

As a further improvement of the utility model, the supporting piece comprises a base part buried in the supporting seat and two bearing parts respectively exposed out of two opposite sides of the supporting seat, and the two bearing parts are symmetrically arranged;

At least two conductive connecting pieces are symmetrically arranged on the two bearing parts.

As a further improvement of the utility model, both the base and the carrier are straight sheets;

Or the base part is in a straight sheet shape, the bearing part is provided with an elastic increasing structure which can enable the elastic sheet type structure to be easy to generate elastic deformation under the action of external force, and the elastic increasing structure is in bending arrangement.

The utility model also provides a relay which comprises a static contact assembly, a magnetic circuit device, the movable contact module and a shell covered on the static contact assembly, the magnetic circuit device and the movable contact assembly, wherein the magnetic circuit device comprises a movable iron core and a push rod for linking the movable iron core and the movable contact module, and the top of the push rod slides into a sliding groove of the supporting seat from one side of the supporting seat and is accommodated in the sliding groove.

As a further improvement of the utility model, a base matched with the shell is also provided, the base is provided with restraining pieces respectively positioned at two sides of the supporting seat and a notch formed by two restraining pieces and the base in a surrounding manner, and the supporting seat is partially received in the notch.

As a further improvement of the utility model, the shell is provided with a baffle plate extending from the top wall to the supporting seat and an opening arranged at the middle position of the baffle plate, and the supporting seat is clamped in the opening.

The beneficial effects of the utility model are as follows: compared with the prior art, the movable contact module integrates the movable contact, the supporting seat, the supporting piece, the conductive connecting piece and the like into one module, but not the conventional bulk piece, so that the installation precision of the movable contact module and the relay product is improved, and the automatic assembly of the relay product is facilitated. In particular, the movable contact module also omits devices such as a contact spring, a limiting bracket and the like in the conventional relay structure, thereby simplifying the structure of the relay product, reducing the volume of the relay product and being beneficial to realizing the miniaturization development of the relay product.

Drawings

Fig. 1 is a schematic perspective view of a movable contact module according to the present utility model at a first view angle;

fig. 2 is a schematic perspective view of the movable contact module according to the present utility model at a second view angle;

fig. 3 is a schematic top view of the movable contact module according to the present utility model;

Fig. 4 is a schematic diagram of a front view structure of the movable contact module according to the present utility model;

fig. 5 is a schematic side view of the movable contact module according to the present utility model;

fig. 6 is a schematic diagram of a partial structure of the movable contact module according to the present utility model;

FIG. 7 is a schematic top view of a first embodiment of the support member of the present utility model;

FIG. 8 is a schematic side view of a second embodiment of the support member of the present utility model;

fig. 9 is a schematic perspective view of a relay according to the present utility model;

FIG. 10 is a schematic cross-sectional view of a relay according to the present utility model;

FIG. 11 is a schematic diagram of a second cross-sectional structure of the relay according to the present utility model;

FIG. 12 is a schematic view of a partial structure of a relay according to the present utility model;

FIG. 13 is a schematic view of the relay in FIG. 12 in a different view;

FIG. 14 is a schematic view of the structure of the housing according to the present utility model;

FIG. 15 is a schematic view of the static contact assembly of the present utility model mounted on the base;

Fig. 16 is a schematic circuit diagram of the relay according to the present utility model.

The following description is made with reference to the accompanying drawings:

1. A movable contact module; 11. a moving contact; 12. a support base; 121. a boss; 122. a main body portion; 1221. a groove; 1222. a sliding groove; 13. a support; 130. a base; 131. a carrying part; 132. an elastic increasing structure; 133. a through hole; 14. a conductive connection; 20. a lead-out sheet; 21. a stationary contact; 30. a movable iron core; 31. a push rod; 32. a coil winding; 33. a magnetic conductive ring; 34. a movable iron core housing; 35. a spring member; 36. a yoke; 4. a housing; 41. a baffle; 42. an opening; 43. a top wall; 5. a magnetic conductive plate; 6. a restraint; 7. a base; 71. a recess.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1:

as described with reference to fig. 1 to 8, embodiment 1 provides a movable contact module for being installed in a relay.

The movable contact module comprises a supporting seat 12 made of insulating plastic materials, supporting pieces 13 penetrating through the supporting seat 12, conductive connecting pieces 14 arranged at two ends of the supporting pieces 13 in parallel and at intervals, and movable contacts 11 arranged on the conductive connecting pieces 14, wherein the supporting pieces 13 and the supporting seat 12 are integrally injection molded, the supporting seat 12 is used for being clamped with push rods in the relay, and the movable contacts 11 are in one-to-one correspondence with fixed contacts in the relay.

Compared with the prior art, the movable contact module integrates the movable contact, the supporting seat, the supporting piece, the conductive connecting piece and the like into one module, but not the conventional bulk piece, so that the installation precision of the movable contact module and the relay product is improved, and the automatic assembly of the relay product is facilitated. In particular, the movable contact module also omits devices such as a contact spring, a limiting bracket and the like in the conventional relay structure, thereby simplifying the structure of the relay product, reducing the volume of the relay product and being beneficial to realizing the miniaturization development of the relay product.

The specific structure of the movable contact module set according to this embodiment is described in detail below.

First, the movable contact 11 is concerned.

As described with reference to fig. 1 to 5, in this embodiment, the moving contacts 11 are preferably configured in a plurality of groups, and two moving contacts 11 in the same group are electrically connected through one conductive connecting member 14, and the moving contacts 11 in different groups are electrically independent of each other, and it is understood that the conductive connecting members 14 are configured in at least two groups and are independent of each other. And a plurality of the movable contacts 11 are also used for being arranged in one-to-one opposite to a plurality of the fixed contacts in the relay.

As can be seen from the above configuration manner of the movable contact 11, the movable contact module according to the present embodiment may be formed into at least two parallel-connected switch branches (refer to the schematic circuit diagram shown in fig. 16) in cooperation with the stationary contact in the relay, so as to greatly improve the load bearing capacity of the relay contact.

In addition, the mounting and fixing manner between the moving contact 11 and the conductive connecting piece 14 may be realized by riveting or soldering, which is commonly used in the relay field, and the manufacturing is simple and the stability is good. Not described in any greater detail herein.

Next, the support base 12 is concerned.

As described with reference to fig. 1 to 6, in this embodiment, the support base 12 preferably includes a boss 121 through which the support member 13 passes, and a main body 122 fixedly connected to the push rod of the relay, where the main body 122 has a dimension along the length direction that is greater than the dimension of the boss 121, and referring to fig. 4 and 6. By means of the supporting seat structure, the following requirements can be met simultaneously: the amount of (elastic) deformation required by the support member 13, the installation load capacity of the boss 121 on the push rod, and the weight of the whole module.

Further preferably, a fixing column is disposed inside the boss 121, a through hole 133 is disposed at a middle position of the supporting member 13 along the length direction, and the fixing column penetrates through the through hole 133.

The manner in which the fixing post is inserted into the through hole 133 is as follows: in this embodiment, the supporting seat 12 and the supporting member 13 are integrally injection molded, and it is understood that the fixing post is made of an insulating plastic material, and flows through and is molded in the through hole 133 during injection molding, and the fixing post can perform a good fixing function on the supporting member 13.

Further preferably, a groove 1221 is concavely formed on a side of the main body 122 away from the boss 121, and a sliding groove 1222 for sliding the relay push rod is formed on a bottom wall of the groove 1221. It is understood that the top of the push rod slides into the sliding groove 1222 from one side of the support base 12, and is received in the sliding groove 1222.

And then, with respect to the support 13.

With continued reference to fig. 1 to 8, in this embodiment, preferably, the supporting member 13 adopts a spring structure and receives a plurality of moving contacts 11, and the supporting member 13 can also be elastically deformed under the pushing of the relay push rod to compress the moving contacts 11 and the fixed contacts in the relay.

Compared with the prior art, the supporting piece 13 adopts a spring piece type structure, and can meet the sucking and opening requirements between the moving contact and the static contact by virtue of the elasticity of the supporting piece, so that devices such as a contact spring and a limiting bracket in a conventional relay structure can be omitted, the structure of a relay product is simplified, the volume of the relay product is reduced, the automatic assembly of the moving contact module and the relay product is realized, and the miniaturized development of the relay product is facilitated.

Further preferably, based on the mounting manner of the support member 13 on the support base 12, the support member 13 may be divided into three sections, namely: the supporting member 13 includes a base 130 embedded in the supporting seat 12 and two bearing portions 131 respectively exposed outside opposite sides of the supporting seat 12, the base 130 is provided with a through hole 133, and the two bearing portions 131 are symmetrically arranged. Correspondingly, at least two conductive connectors 14 are symmetrically disposed on the two bearing portions 131, so as to ensure the installation stability of the conductive connectors 14 and the moving contact 11, and ensure the stability of the moving contact 11 and the static contact in cooperation.

Still more preferably, the base 130 and the bearing 131 are both straight sheets, as shown in fig. 7.

Or the base 130 is in a straight sheet shape, the bearing portion 131 is provided with an elastic increasing structure 132 capable of enabling the elastic sheet structure to be easily deformed under the action of external force, so as to adjust the elasticity of the elastic sheet, and the elastic increasing structure 132 is in a bending arrangement, so that the elasticity of the supporting piece 13 can be conveniently adjusted. With respect to the specific shape of the charge-enhancing structure 132, an arch shape (as described with respect to fig. 8) or a V-shape may be used. In addition, the number of the bullet-increasing structures 132 is not limited in the present embodiment, but the bullet-increasing structures 132 on the two bearing portions 131 must be symmetrically distributed.

Furthermore, as for the connection manner of the supporting member 13 and the conductive connecting member 14, it is possible to employ: the conductive connecting member 14 is fixedly connected to the supporting member 13 by any one of riveting, welding and fastening. The method specifically comprises the following steps: the conductive connector 14 is riveted to the support 13 by means of rivets.

Example 2:

As described with reference to fig. 9 to 16, embodiment 2 provides a relay, which mainly includes a stationary contact assembly, a magnetic circuit device, a movable contact module 1, and a housing 4 covering the stationary contact assembly, the magnetic circuit device, and the movable contact module, wherein the movable contact module 1 adopts the movable contact module structure provided in embodiment 1, the magnetic circuit device includes a movable iron core 30 and a push rod 31 for linking the movable iron core 30 and the movable contact module 1, and a top of the push rod 31 slides into the sliding groove 1222 from a side of a support base 12 of the movable contact module 1, and is accommodated in the sliding groove 1222.

According to the relay structure, the relay is convenient to assemble and high in installation accuracy, and the magnetic circuit device adopts a direct-acting structure, so that the structure is simple and small, the space utilization rate of a relay product can be well improved, and the miniaturization of the relay product is realized.

Further preferably, in this embodiment, the static contact assembly includes two lead-out pieces 20 and a plurality of static contacts 21, where the two lead-out pieces 20 are respectively used for accessing an external electrical circuit, the plurality of static contacts 21 are equally arranged on the two lead-out pieces 20, and the plurality of static contacts 21 are respectively arranged in a one-to-one opposite manner with the plurality of moving contacts 11, that is: the movable contact 11, the conductive connecting member 14, and the stationary contact assembly in the movable contact module 1 together form at least two switch branches, and the at least two switch branches are connected in parallel (see the schematic circuit diagram of fig. 16).

As for the mounting manner in which the stationary contact 21 is provided on the lead-out tab 20, it is possible to employ: the stationary contact 21 is fixedly mounted on the lead-out plate 20 by riveting, which belongs to a common technical means in the relay field, and therefore, not described in detail herein.

Still further preferably, in embodiment 2, the two moving contacts 11 in the same group are not synchronized with the corresponding two fixed contacts 21 in the closing connection or disconnection operation. Therefore, the contact resistance and the electric repulsive force between the moving contact and the fixed contact can be effectively reduced, the performance of a relay product can be well optimized and improved, and the use risk of equipment is reduced.

Specifically, the structure for realizing that the actions of the two moving contacts 11 in the same group and the corresponding two fixed contacts 21 are not synchronous in the suction connection or disconnection mode is as follows: the movable contact 11 is provided with a movable contact surface for contacting with the fixed contact 21, and the fixed contact 21 is provided with a fixed contact surface for contacting with the movable contact 11; when the movable contact 11 and the fixed contact 21 are in an open state, the distances between the movable contact surfaces of the two movable contacts 11 and the fixed contact surfaces of the two fixed contacts 21 in the same group are not equal.

If two moving contacts 11 in the same group are respectively defined as a first moving contact and a second moving contact, and a fixed contact corresponding to the first moving contact is defined as an arcing contact, and a fixed contact corresponding to the second moving contact is defined as a current carrying contact; then, when the moving contact 11 and the fixed contact 21 are in the open state, the distance between the moving contact surface of the first moving contact and the fixed contact surface of the arcing contact is smaller than the distance between the moving contact surface of the second moving contact and the fixed contact surface of the current-carrying contact. Thus, when the moving contact 11 moves towards the fixed contact 21, the communication time of the first moving contact and the arcing contact is earlier than that of the second moving contact and the current-carrying contact; and when the moving contact 11 moves away from the fixed contact 21, the disconnection time of the second moving contact and the current-carrying contact is earlier than that of the first moving contact and the arcing contact.

Because the arcing contact is closed and then opened, the arcing contact bears the arcing energy of an arc generated by the relay product when the relay product is closed or opened. Therefore, the risk of arc ablation and damage of the current-carrying contact which is closed and opened firstly is avoided well, so that the current-carrying contact is protected effectively, and the contact resistance and the electric repulsive force between the current-carrying contact and the second moving contact are reduced effectively.

Further preferably, the magnetic circuit device in this embodiment adopts a structure that: referring to fig. 10 and 11, the magnetic circuit device further includes a coil winding 32, a magnetic conductive ring 33, a movable iron core housing 34, a spring member 35, and a yoke 36, wherein the yoke 36 is disposed outside the coil winding 32; the magnetic ring 33 is disposed in the space enclosed by the coil winding 32 and is fixedly connected with the yoke 36; one end of the movable iron core shell 34 is inserted into the magnetic conductive ring 33, and the other end of the movable iron core shell 34 is fixedly connected with the magnetic conductive plate 5; the movable iron core 30 is movably arranged in the movable iron core shell 34, and the movable iron core 30 is fixedly connected with the tail part of the push rod 31; the spring member 35 is sleeved on the push rod 31 and is close to the tail of the push rod 31. It is to be understood that the spring member 35 may also be referred to as a return spring, and is used for elastically returning the push rod 31, the movable contact module 1, and the like.

Further preferably, in this embodiment, the housing 4 is provided with a baffle 41 extending from a top wall 43 thereof toward the support base 12, and an opening 42 (see fig. 14) provided at a middle position of the baffle 41, and the support base 12 is engaged with the opening 42. And, in the relay of this embodiment, a base 7 matched with the housing 4 is further provided, the base 7 is provided with a restraint member 6 respectively located at two sides of the support base 12, and a notch 71 (refer to fig. 15 and 13) formed by surrounding two restraint members 6 and the base 7, and the support base 12 is partially received in the notch 71.

Preventing the movement of the support base 12 by the shutter 41 and preventing the rotation of the support base 12 by the restraint 6; thereby ensuring that the push rod 31 is not dislodged from the support base 12.

In summary, the movable contact module has a simple and small structure and high integration level, can greatly improve the installation convenience and the installation efficiency of the relay product, improves the load bearing capacity of the relay product, and realizes the miniaturization of the relay product.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides a movable contact module for install in relay, its characterized in that: comprising the following steps: the support base (12), wear to locate support piece (13) of support base (12), parallel and the interval install in conductive connection spare (14) at support piece (13) both ends and install in moving contact (11) of conductive connection spare (14), support piece (13) with integrative injection moulding of support base (12), the push rod looks joint of support base (12) and relay.

2. The movable contact module according to claim 1, wherein: the support seat (12) is made of insulating plastic materials, the support seat (12) comprises a boss (121) for the support piece (13) to penetrate through and a main body part (122) fixedly connected with a push rod of the relay, and the size of the main body part (122) along the length direction of the main body part is larger than that of the boss (121).

3. The movable contact module according to claim 2, wherein: the boss (121) is internally provided with a fixed column, a through hole (133) is formed in the middle position of the supporting piece (13) along the length direction, and the fixed column penetrates through the through hole (133);

A groove (1221) is concavely arranged on one side, far away from the boss (121), of the main body part (122), and a sliding groove (1222) for sliding a relay push rod is arranged on the bottom wall of the groove (1221).

4. The movable contact module according to claim 1, wherein: the support piece (13) adopts a spring piece type structure and receives a plurality of moving contacts (11), and the support piece (13) can also elastically deform under the pushing of the relay push rod so as to compress the moving contacts (11) and the fixed contacts of the relay.

5. The movable contact module according to claim 2, wherein: the conductive connecting piece (14) is fixedly connected with the supporting piece (13) through any one mode of riveting, welding and fastening piece connection.

6. The movable contact module according to claim 4, wherein: the supporting piece (13) comprises a base part (130) buried in the supporting seat (12) and two bearing parts (131) respectively exposed out of two opposite sides of the supporting seat (12), and the two bearing parts (131) are symmetrically arranged;

at least two conductive connecting pieces (14) are symmetrically arranged on the two bearing parts (131).

7. The movable contact module according to claim 6, wherein: the base (130) and the bearing part (131) are both straight sheets;

or the base part (130) is in a straight sheet shape, the bearing part (131) is provided with an elastic increasing structure (132) which can enable the elastic sheet type structure to be easily deformed elastically under the action of external force, and the elastic increasing structure (132) is arranged in a bending way.

8. A relay, characterized in that: the movable contact module (1) as claimed in any one of claims 1 to 7, and a housing (4) covering the movable contact module, the magnetic circuit device and the movable contact module, wherein the magnetic circuit device comprises a movable iron core (30) and a push rod (31) for linking the movable iron core (30) and the movable contact module (1), and the top of the push rod (31) slides into a sliding groove (1222) of the supporting seat (12) from one side of the supporting seat (12) and is contained in the sliding groove (1222).

9. The relay of claim 8, wherein: the novel support is characterized by further comprising a base (7) matched with the shell (4), wherein the base (7) is provided with restraining pieces (6) which are respectively positioned at two sides of the support seat (12) and notches (71) which are formed by two restraining pieces (6) and the base (7) in a surrounding mode, and the support seat (12) is partially received in the notches (71).

10. The relay of claim 8, wherein: the shell (4) is provided with a baffle plate (41) extending from a top wall (43) of the shell to the supporting seat (12) and an opening (42) arranged at the middle position of the baffle plate (41), and the supporting seat (12) is clamped in the opening (42).