Novel double-contact relay

Abstract

The utility model relates to the technical field of double-contact relays, in particular to a novel double-contact relay, which comprises a plurality of contact assemblies, static spring leading-out sheets are arranged at the tops of the contact assemblies, each static spring leading-out sheet is provided with a main contact and an upper auxiliary contact, a lower main contact is arranged below the main contact, and the lower auxiliary contact corresponds to the lower part of the upper auxiliary contact. The lower main contact and the lower auxiliary contact are installed on one side of the conducting strip, one side of the conducting strip is fixed to one side of the movable spring leading-out piece, the pushing piece comprises a longitudinal connecting piece, a plurality of contact assemblies and an auxiliary piece, the multiple contact assemblies are arranged on the inner side of the longitudinal connecting piece, and each contact assembly comprises an upper contact piece and a lower contact piece. A step block is arranged below one side, close to the lower auxiliary contact, of the upper contact piece, and the lower side of the lower contact piece is connected with an auxiliary piece which can move up and down and is arranged in the movable spring leading-out piece groove. According to the utility model, the main contact and the auxiliary contact enable the auxiliary contact to be opened or closed successively through the upper contact sheets with different heights on the push sheet, thereby avoiding arc impact and improving circuit safety.

Description

Technical Field

[0001] The utility model relates to the technical field of double - contact relays, and more specifically, the utility model relates to a novel double - contact relay.

Background Art

[0002] A magnetic latching relay is an electronic control device that plays roles such as automatic regulation, safety protection, and circuit conversion in a circuit, and is widely used in devices such as power protection, automation, motion, remote control, measurement, and communication. A magnetic latching relay generally includes a base, a yoke assembly, a magnet assembly, a moving reed assembly, a static reed assembly, and a push piece. The coil is wound on the skeleton of the yoke assembly. When the direction of the current in the coil changes, the yoke in the yoke assembly will cause the magnet assembly to rotate, thereby pushing the push piece to separate or close the moving contact and the static contact.

[0003] An existing double - contact relay, with the publication number of CN 114999860 A, includes a reed. One end of the reed is a fixed end, and the other end is a free end that can swing under the drive of electromagnetic force; a first moving contact and a second moving contact are provided on the reed; a first static contact is provided at a position corresponding to the first moving contact, and a second static contact is provided at a position corresponding to the second moving contact; the first moving contact and the first static contact form a first pair of contacts, and the second moving contact and the second static contact form a second pair of contacts; the swinging angle of the reed required for the first pair of contacts to contact is greater than the swinging angle of the reed required for the second pair of contacts to contact; the electrical conductivity of the material of the first pair of contacts is higher than that of the second pair of contacts; the arc - erosion resistance and wear resistance of the material of the first pair of contacts are lower than those of the second pair of contacts. This double - contact relay sets two contacts with different materials and properties to achieve the advantages of high conductivity and corrosion resistance. However, when this double - contact relay is in use, the purpose of sequential contact is achieved by the thickness of the contacts, but this will cause uneven contact pressure, and the service life of the relay will be reduced after long - term use.

Content of the Utility Model

[0004] In order to overcome the above - mentioned defects of the prior art, the purpose of the utility model is to provide a novel double - contact relay, which sets a stepped contact piece to control the sequential opening and closing of the main contact and the auxiliary contact, protects the safety of the relay equipment, and ensures the independence of the actions of the two contacts and provides elastic force to the contacts by setting a slotted conductive piece.

[0005] To achieve the above object, the utility model provides the following technical solution: a novel double-contact relay, comprising a base, a microswitch, a coil, a support frame, a magnet assembly, a push piece, and a plurality of contact assemblies. The contact assemblies include a moving reed lead-out piece, a static reed lead-out piece, a conductive piece, a lower main contact, an upper main contact, a lower auxiliary contact, and an upper auxiliary contact. The coil is installed at the bottom of the base. A support frame is provided above the coil. The support frame is connected to the magnet assembly. A microswitch is provided on one side of the magnet assembly. The other side of the magnet assembly is clamped under the push piece. A plurality of contact assemblies are provided on the upper side of the base. The static reed lead-out piece is provided at the top of the contact assembly. The main contact and the upper auxiliary contact are arranged in parallel on the static reed lead-out piece. The lower main contact is correspondingly provided below the main contact. The lower auxiliary contact is correspondingly provided below the upper auxiliary contact. The sizes of the lower main contact and the upper main contact are larger than those of the lower auxiliary contact and the upper auxiliary contact. The lower main contact and the lower auxiliary contact are installed on one side of the conductive piece. One side of the conductive piece is fixed to one side of the moving reed lead-out piece. The other side of the conductive piece is arranged in the card slot of the push piece. The push piece includes a longitudinal connecting piece, a plurality of contact components, and an auxiliary piece. A plurality of contact components are provided on the inner side of the longitudinal connecting piece. The contact components include an upper contact piece and a lower contact piece. The conductive piece is arranged below the upper contact piece. A step block is provided below the upper contact piece near one side of the lower auxiliary contact. The lower contact piece is provided below the conductive piece. The lower side of the lower contact piece is connected to the auxiliary piece. The auxiliary piece is movably arranged up and down in the slot of the moving reed lead-out piece.

[0006] Preferably, the magnet assembly includes a rotating body, a push rod, and an armature plate. The rotating body is rotatably connected to the support frame. The push rod is arranged on one side of the rotating body close to the push piece. The push rod is connected to the lower end of the push piece. Armature plates are provided on both sides of the rotating body.

[0007] Preferably, the push piece further includes a connecting groove, and the push rod is connected in the connecting groove.

[0008] Preferably, the number of the contact assemblies is more than one and is the same as that of the contact components.

[0009] Preferably, the moving reed lead-out piece and the static reed lead-out piece extend out of the base.

[0010] Preferably, the conductive piece includes a conductive piece one, a conductive piece two, a conductive piece three, and a stainless steel elastic piece. Central slots are provided in the conductive piece one, the conductive piece two, and the conductive piece three. The lower main contact and the lower auxiliary contact are respectively arranged on both sides. The conductive piece one, the conductive piece two, and the conductive piece three are stacked in a "ji" shape in sequence. A stainless steel elastic piece is bent downward on the side of the conductive piece away from the moving reed lead-out piece.

[0011] Preferably, the stainless steel elastic piece has a slot in the middle and is integrally formed. One side of the stainless steel elastic piece contacts the lower contact piece.

[0012] Preferably, the lower main contact and the upper main contact are arranged corresponding to each other vertically, the lower auxiliary contact and the upper auxiliary contact are arranged corresponding to each other vertically, the lower main contact and the lower auxiliary contact are set at the same height, and the upper main contact and the upper auxiliary contact are set at the same height.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In a novel double-contact relay of the present utility model, the main contact and the auxiliary contact use upper contact pieces with different heights on the pushing piece to make the auxiliary contact disconnect or close successively, which can effectively avoid phenomena such as arc impact and loop impedance, thereby improving the safety of the circuit. When one contact fails, it does not affect the overall path, achieving the purpose of extending the service life of the relay;

[0015] 2. A novel double-contact relay of the present utility model uses smaller auxiliary contacts, which can reduce the production cost of the relay. At the same time, when the double contacts work simultaneously, the contact resistance is reduced, effectively reducing energy loss and heat generation, and improving the practicability of this kind of relay;

[0016] 3. In a novel double-contact relay of the present utility model, a stainless steel spring piece is provided on the lower side of the conductive piece. The spring piece adopts an integral structure design with a slot in the middle. While ensuring the independence and freedom of movement of the two contacts, it can respectively provide contact elasticity, and cooperate with the slot of the conductive piece to enable the test contact to have the ability to work independently, improving the practical performance of the relay;

[0017] 4. A novel double-contact relay of the present utility model is provided with a plurality of contact components, which can be set according to requirements, increasing the flexibility of the double-contact relay.

Description of the Drawings

[0018] Figure 1 is the front view of a novel double-contact relay of the present utility model;

[0019] Figure 2 is the left view of a novel double-contact relay of the present utility model;

[0020] Figure 3 is the detailed left view structure diagram of the contact component of a novel double-contact relay of the present utility model;

[0021] Figure 4 is the exploded structure diagram of the contact component of a novel double-contact relay of the present utility model;

[0022] Figure 5 is the structural schematic diagram of the magnet steel component of a novel double-contact relay of the present utility model;

[0023] In the figure: 1 - base, 2 - microswitch, 3 - coil, 4 - support frame, 5 - magnet assembly, 51 - rotating body, 52 - push rod, 53 - armature piece, 6 - push piece, 61 - longitudinal connecting piece, 62 - upper contact piece, 621 - step block, 63 - lower contact piece, 64 - auxiliary piece, 65 - connecting groove, 7 - moving spring lead piece, 8 - static spring lead piece, 9 - conductive piece, 91 - conductive piece one, 92 - conductive piece two, 93 - conductive piece three, 94 - stainless steel elastic piece, 10 - lower main contact, 11 - upper main contact, 12 - lower auxiliary contact, 13 - upper auxiliary contact.

Specific Embodiment

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Refer to Figure 1 、 Figure 3 、 Figure 4, in the embodiment of the present utility model, a new type of double-contact relay includes a base 1, a microswitch 2, a coil 3, a support frame 4, a magnet assembly 5, a push piece 6, and several contact assemblies. The contact assemblies include a moving spring lead piece 7, a static spring lead piece 8, a conductive piece 9, a lower main contact 10, an upper main contact 11, a lower auxiliary contact 12, and an upper auxiliary contact 13. The coil 3 is installed at the bottom of the base 1. A support frame 4 is provided above the coil 3. The support frame 4 is connected to the magnet assembly 5. A microswitch 2 is provided on one side of the magnet assembly 5. The other side of the magnet assembly 5 is clamped under the push piece 6. Several contact assemblies are provided on the upper side of the base 1. A static spring lead piece 8 is provided at the top of the contact assemblies. The main contact 11 and the upper auxiliary contact 13 are arranged in parallel on the static spring lead piece 8. The lower main contact 10 is correspondingly provided below the main contact 11. The lower auxiliary contact 12 is correspondingly provided below the upper auxiliary contact 13. The sizes of the lower main contact 10 and the upper main contact 11 are larger than those of the lower auxiliary contact 12 and the upper auxiliary contact 13. The installation heights of the lower main contact 10 and the lower auxiliary contact 12 are the same. The installation heights of the upper main contact 11 and the upper auxiliary contact 13 are the same. The lower main contact 10 and the lower auxiliary contact 12 are installed on one side of the conductive piece 9. One side of the conductive piece 9 is fixed on one side of the moving spring lead piece 7. The moving spring lead piece 7 and the static spring lead piece 8 extend out of the base 1. The other side of the conductive piece 9 is arranged in the slot of the push piece 6. The conductive piece 9 includes a conductive piece one 91, a conductive piece two 92, a conductive piece three 93, and a stainless steel elastic piece 94. The conductive piece one 91, the conductive piece two 92, and the conductive piece three 93 are grooved in the center, and the lower main contact 10 and the lower auxiliary contact 12 are respectively arranged on both sides. The conductive piece one 91, the conductive piece two 92, and the conductive piece three 93 are stacked in a "ji" shape in sequence. A stainless steel elastic piece 94 is bent downward on the side of the conductive piece 9 away from the moving spring lead piece 7.

[0026] Refer to Figure 1 , Figure 2 , in the embodiment of the present utility model, for a new type of double-contact relay, the push piece 6 includes a longitudinal connecting piece 61, several contact components, and an auxiliary piece 64. The longitudinal connecting piece 61 is provided with several contact components on the inner side. The contact components include an upper contact piece 62 and a lower contact piece 63. The conductive piece 9 is arranged below the upper contact piece 62. A step block 621 is provided below the upper contact piece 62 near one side of the lower auxiliary contact 12. The lower contact piece 63 is arranged below the conductive piece 9. The lower side of the lower contact piece 63 is connected to the auxiliary piece 64. The auxiliary piece 64 is movably arranged up and down in the slot of the moving spring lead piece 7. The push piece 6 further includes a connecting groove 65. A push rod 52 is connected in the connecting groove 65.

[0027] Refer to Figure 5, in the embodiment of the present utility model, a new type of double-contact relay, the magnet assembly 5 includes a rotating body 51, a push rod 52, and an armature plate 53. The rotating body 51 is rotatably connected to the support frame 4. A push rod 52 is arranged on the rotating body 51 close to one side of the push piece 6. The push rod 52 is connected to the lower end of the push piece 6. Armature plates 53 are arranged on both sides of the rotating body 51.

[0028] For a new type of double-contact relay of the present utility model, when it is turned on and used, the coil 3 is energized through a switch, and the magnet assembly 5 on the support frame 4 rotates around the axis, so that the armature plates 53 on both sides are attracted by magnetic force to the connection ends on both sides of the coil 3. The push rod 52 on one side rotates, and the armature plate 53 on the upper right side contacts the stainless steel push rod under the micro switch 2. The micro switch 2 can feedback the position state of the magnet assembly 5 to monitor the situation of the contact assembly. The rotation of the push rod 52 enables the connection groove 65 to move the push piece 6 up and down. When the push piece 6 moves down, due to the step block 621 arranged on the upper contact piece 62 close to one side of the lower auxiliary contact 12, the lower auxiliary contact 12 is preferentially disconnected from the upper auxiliary contact 13, and then the lower main contact 10 is disconnected from the upper main contact 11, achieving the disconnection of the contacts. Due to the sequence of disconnection, the generation of arc shock or loop impedance phenomenon can be effectively avoided, improving the safety of the circuit; when the reverse current is passed through the coil 3, the magnet assembly 5 rotates in the reverse direction, and the reverse rotation of the moving rod causes the connection groove 65 to drive the push piece to move up. Due to the step block 621 arranged on the upper contact piece 62 close to one side of the lower auxiliary contact 12, the lower main contact 10 and the upper main contact 11 are preferentially closed, and then the lower auxiliary contact 12 and the upper auxiliary contact 13 are closed, achieving the closing of the contacts. The size of the main contact is larger than that of the auxiliary contact, and the strength is higher than that of the auxiliary contact. By the preferential closing and opening of the auxiliary contacts, the cost can be saved while protecting the auxiliary contacts and improving the safety of this type of relay. Since the conductive sheet 9 connected to the lower contact is provided with multiple conductive sheets, the contact circuit is also protected, increasing its safety. A stainless steel elastic sheet 94 is arranged on one side of the conductive sheet 9. The bending degree of the stainless steel elastic sheet 94 is greater than that of the upper conductive sheet group. The stainless steel elastic sheet 94 is of an integral structure, and slots are arranged in the middle of both the stainless steel elastic sheet 94 and the upper conductive sheet group, which can ensure the independent operation of the main contact and the auxiliary contact and they will not directly affect each other.

[0029] The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any scheme obtained by simply changing the present utility model belongs to the protection scope of the present utility model.

Claims

1. A new type of double-contact relay, characterized in that: The invention comprises a base (1), a micro switch (2), a coil (3), a support frame (4), a magnetic steel assembly (5), a push sheet (6), and a plurality of contact assemblies, wherein the contact assemblies comprise a movable spring lead sheet (7), a static spring lead sheet (8), a conductive sheet (9), a lower main contact (10), an upper main contact (11), a lower auxiliary contact (12), and an upper auxiliary contact (13), wherein the coil (3) is installed at the bottom of the base (1), a support frame (4) is provided above the coil (3), and the support frame (4) is connected to the magnetic steel assembly (5). A magnetic steel component (5) is provided on one side of the magnetic steel component (5), and the other side of the magnetic steel component (5) is clamped on the lower side of the push plate (6). A plurality of contact components are provided on the upper side of the base (1), and a static spring lead-out plate (8) is provided on the top of the contact component. A main contact (11) and an upper auxiliary contact (13) are arranged in parallel on the static spring lead-out plate (8). A lower main contact (10) is correspondingly provided below the main contact (11), and a lower auxiliary contact (13) is correspondingly provided below the upper auxiliary contact (13). The size of the lower main contact (10) and the upper main contact (11) is larger than that of the lower auxiliary contact (12) and the upper auxiliary contact (13). The lower main contact (10) and the lower auxiliary contact (12) are installed on one side of the conductive sheet (9). The one side of the conductive sheet (9) is fixed to the one side of the movable spring lead-out sheet (7). The other side of the conductive sheet (9) is arranged in the slot of the push sheet (6). The push sheet (6) includes a longitudinal connecting piece (61), a plurality of contact components, and an auxiliary sheet (64). The longitudinal connecting piece (61) A plurality of contact components are arranged inwardly, and the contact components include an upper contact piece (62) and a lower contact piece (63). A conductive piece (9) is arranged below the upper contact piece (62). A step block (621) is arranged below the side of the upper contact piece (62) close to the lower auxiliary contact (12). A lower contact piece (63) is arranged below the conductive piece (9). The lower side of the lower contact piece (63) is connected to an auxiliary piece (64). The auxiliary piece (64) can be moved up and down and is arranged in the groove of the movable spring lead-out piece (7).

2. A novel double-contact relay as claimed in claim 1, characterized in that: The magnetic steel assembly (5) comprises a rotating body (51), a pushing rod (52), and an armature piece (53). The rotating body (51) is rotatably connected to the support frame (4). A pushing rod (52) is arranged on the side of the rotating body (51) close to the pushing piece (6). The pushing rod (52) is connected to the lower end of the pushing piece (6). Armature pieces (53) are arranged on both sides of the rotating body (51).

3. A novel double-contact relay as claimed in claim 1, characterized in that: The pushing piece (6) further comprises a connecting groove (65), and the pushing rod (52) is connected in the connecting groove (65).

4. A novel double-contact relay as claimed in claim 1, characterized in that: The number of the contact components is more than one.

5. A novel double-contact relay as claimed in claim 1, characterized in that: The movable spring lead-out piece (7) and the static spring lead-out piece (8) extend outward from the base (1).

6. A novel double-contact relay as claimed in claim 1, characterized in that: The conductive sheet (9) comprises a conductive sheet 1 (91), a conductive sheet 2 (92), a conductive sheet 3 (93), and a stainless steel elastic sheet (94). The conductive sheet 1 (91), the conductive sheet 2 (92), and the conductive sheet 3 (93) are centrally grooved, and lower main contacts (10) and lower auxiliary contacts (12) are respectively arranged on both sides. The conductive sheet 1 (91), the conductive sheet 2 (92), and the conductive sheet 3 (93) are stacked in sequence in a "J" shape. The side of the conductive sheet (9) away from the movable spring lead-out sheet (7) is bent downward and provided with a stainless steel elastic sheet (94).

7. A novel double-contact relay as claimed in claim 6, characterized in that: The stainless steel elastic sheet (94) is slotted in the middle and is integrally formed. One side of the stainless steel elastic sheet (94) contacts the lower contact sheet (63).

8. A novel double-contact relay as claimed in claim 1, characterized in that: The lower main contact (10) and the upper main contact (11) are arranged correspondingly up and down, the lower auxiliary contact (12) and the upper auxiliary contact (13) are arranged correspondingly up and down, the lower main contact (10) and the lower auxiliary contact (12) are arranged at the same height, and the upper main contact (11) and the upper auxiliary contact (13) are arranged at the same height.

Images