CN217485365U

CN217485365U - Relay with small friction contact

Info

Publication number: CN217485365U
Application number: CN202220950762.8U
Authority: CN
Inventors: 杜欣洋; 廖浩宇; 韦鹏升; 侯杰; 莫豪; 刘晓冬; 万雨生; 陈志权; 陈仁富; 易芳
Original assignee: Ningbo Yongyou Electronics Co ltd
Current assignee: Ningbo Yongyou Electronics Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-09-23
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a relay with small friction contact, which comprises a relay component, wherein the relay component is provided with a plate spring assembly; the contact part is arranged on the contact part, the contact part is in high-order contact with the leaf spring assembly, the contact part of the leaf spring assembly is in contact or separation through the movable contact part, the on-off state of a circuit is changed, and the problems that a contact surface between a push piece and a movable leaf spring in the existing relay is large, large friction force is generated easily, and abrasion is caused to the movable leaf spring are solved.

Description

Relay with small friction contact

Technical Field

The utility model relates to a relay field especially relates to a little frictional contact's relay.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

For example, the inventor aims at the improvement of a relay with a push sheet between a movable spring and an armature on the market, and discloses a relay with a publication number of CN208478255U in 2019, 2, 5, and the relay improves the stability of contact between contacts by improving the shock resistance of the movable spring. However, the relay and the relay provided with the push piece still have a defect that the contact surface between the push piece and the movable spring is large, so that large friction force is easily generated, and the movable spring is easily abraded.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art at least one defect, the utility model provides a little frictional contact's relay has solved that the contact surface is big between the push jack that exists in the current relay and the movable contact spring, produces great frictional force easily and causes the problem of wearing and tearing to the movable contact spring.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a low friction contact relay includes a relay member having a plate spring assembly, and further includes a contact member movably connected to the relay member; the contact piece is provided with a reed contact part which is in high-pair contact with the plate spring assembly, and the contact piece is moved to contact or separate the contacts of the plate spring assembly, so that the on-off state of the circuit is changed. Consequently, form point contact or line contact's high pair between reed butt portion and the leaf spring assembly and be connected for touch the piece and contact area when mutual butt effect reduces greatly with leaf spring assembly, and then has effectively reduced the friction that touches piece and leaf spring assembly and produce at extrusion and relative slip, and this not only reduces the wearing and tearing that lead to the fact leaf spring assembly, makes the process of touching the piece effect and pressfitting leaf spring assembly more stable smooth and easy moreover.

Further, the end part one side of the reed abutting part is an arc-shaped surface or a bending surface, the reed abutting part is in line contact with the plate spring assembly, the purpose of line contact between the reed abutting part and the plate spring assembly in high-pair contact is achieved, and therefore the effect of small friction between the touch part and the plate spring assembly is achieved.

Further, the tip one side of reed butt portion is sphere form or toper form, reed butt portion with leaf spring subassembly point contact has realized the point contact purpose in reed butt portion and the high vice contact of leaf spring subassembly to reach the effect of touching little friction between movable part and the leaf spring subassembly.

Further, the relay component further comprises an armature member; the contact piece is also provided with an armature abutting part, the armature abutting part is in high-order contact with the armature piece, the armature piece is driven to push the contact piece to move, the armature piece is enabled to transmit movement and force to the contact piece, the contact piece is driven to move, and therefore the contact and separation of contacts of the plate spring assembly are achieved.

Furtherly, armature butt portion's tip one side is the arcwall face or the face of bending, armature butt portion with armature spare line contact realizes the line contact purpose in armature butt portion and the high vice contact of armature spare to reach the effect of small friction between touching piece and the armature spare.

Further, armature portion's tip one side is sphere form or toper form, armature portion with armature spare point contact realizes the point contact purpose in armature portion and the high vice contact of armature spare to reach the effect of touching little friction between piece and the armature spare.

Furthermore, the relay component also comprises a main seat body, wherein the main seat body is provided with a mounting groove; the connecting body of the touch piece is also provided with at least one hinge part, and the hinge part is in rotating fit in the mounting groove.

Furthermore, the hinged part is cylindrical and is in line contact with the mounting groove, so that a small friction effect is formed between the hinged part and the mounting groove, and the movement of the touch part is smoother.

Further, the plate spring assembly comprises a static spring piece and a movable spring piece, and the static spring piece and the movable spring piece are both fixedly connected to the main seat body; the contact comprises a fixed contact arranged on the fixed spring piece and a movable contact arranged on the movable spring piece.

Further, the relay component also comprises an electromagnet assembly, and the armature piece is magnetically connected with the electromagnet assembly.

To sum up, the utility model provides a pair of little friction contact's relay has following technological effect:

through being the high vice contact to the interact improvement between touching the piece and the leaf spring subassembly, the in-process friction that the piece that touches in the realization relay is making the leaf spring subassembly carry out contact and/or separation reduces greatly, has solved the big defect of area of contact between current push jack structure and the movable contact spring in the relay, has effectively reduced the wearing and tearing of movable contact spring, has also guaranteed to touch the effect of piece effect on the leaf spring subassembly more stably smooth and easy.

Drawings

FIG. 1 is an assembly view of a small friction contact relay according to the present invention;

fig. 2 is a front view structural diagram of the relay component of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of the middle trigger of the present invention.

An icon: 1-relay part, 11-plate spring component, 111-static spring, 112-movable spring, 113-static contact, 114-movable contact, 12-main seat body, 13-mounting groove, 14-armature piece, 15-electromagnet component, 2-touch piece, 21-spring abutting part, 22-connecting body, 23-hinging part and 24-armature abutting part.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 is the utility model discloses little friction contact's relay assembly drawing, fig. 2 is the utility model discloses relay part 1's main view structure picture, fig. 3 is the utility model discloses well touch the spatial structure schematic diagram of piece 2, it is shown specifically please combine fig. 1 to fig. 3, the utility model discloses a little friction contact's relay, including relay part 1 and swing joint in touch the piece 2 of relay part 1, relay part 1 has leaf spring assembly 11, wherein, has reed butt portion 21 on touching piece 2, and reed butt portion 21 and the high vice contact of leaf spring assembly 11, the activity touches the piece 2 so that leaf spring assembly 11's contact or separation, changes the on-off state of circuit.

In this embodiment, the relay part 1 further includes a main seat 12, and the main seat 12 is provided with a mounting groove 13; still be provided with two articulated portions 23 on the connecting body 22 of touch member 2, and two articulated portions 23 set up in the bottom both sides of connecting body 22 relatively, and two articulated portions 23 all rotate to cooperate in mounting groove 13, it should be said that, its purpose of two articulated portions 23 that set up relatively is in order to guarantee that touch member 2 atress more even at the in-process of swing activity, simultaneously, reduces the area of contact of articulated portion 23 with the inside wall of mounting groove 13, guarantees that touch member 2 is more smooth at the in-process of swing activity. The number of the hinge portions 23 is not limited to two, and may be one, or three or more. Further, the width of the notch of the mounting groove 13 is greater than the thickness of the connecting body 22 at the notch to reserve the swing space of the contacting member 2, so that the contacting member 2 is movably connected to the relay component 1, when the contacting member 2 swings towards the direction of the leaf spring component 11, because the reed abutting part 21 of the contacting member 2 abuts against the leaf spring component 11, the contact of the pressing leaf spring component 11 is contacted, when the contacting member 2 swings towards the opposite direction of the leaf spring component 11, the acting force on the leaf spring component 11 is removed, the contact of the leaf spring component 11 is separated, and the on-off state of the circuit is changed.

It should be noted that the touch member 2 is movably connected to the relay component 1, and may be a preferable connection manner of a swing motion, and may also be a preferable manner of a sliding motion, that is, the touch member 2 is slidably engaged with the main body 12. When the trigger 2 slides towards the direction of the plate spring assembly 11, the contacts of the pressed plate spring assembly 11 are contacted, and when the trigger 2 slides towards the opposite direction of the plate spring assembly 11, the acting force on the plate spring assembly 11 is removed, so that the contacts of the plate spring assembly 11 are separated, and the on-off state of the circuit is changed.

According to the above action process of the leaf spring assembly 11 and the reed abutting portion 21, when the leaf spring assembly 11 is in press-fit contact or separation, the leaf spring assembly 11 and the reed abutting portion 21 all generate relative sliding all the time, and the reed abutting portion 21 is in high-pair contact with the leaf spring assembly 11, so that the contact area between the reed abutting portion 21 and the leaf spring assembly 11 is greatly reduced, and further the friction force between the reed abutting portion 21 and the leaf spring assembly 11 is reduced, on one hand, the relative sliding between the leaf spring assembly 11 and the reed abutting portion 21 is smoother, and the operation stability of the relay in the use process is ensured. On the other hand, the abrasion degree of the plate spring assembly 11 is effectively reduced, and the service life and the structural stability of the relay are improved.

Further, as a preferable aspect of the "contact between the reed abutting portion 21 and the leaf spring assembly 11 is high-order", specifically, as shown in fig. 1 and 3, one side of the end portion of the reed abutting portion 21 is an arc-shaped surface or a bent surface, where the end portion is an end of the reed abutting portion 21 that contacts the leaf spring assembly 11, and the reed abutting portion 21 is in line contact with the leaf spring assembly 11.

Another alternative of the "higher order contact between the reed abutting portion 21 and the leaf spring assembly 11" is that, as shown in fig. 1 and 3, the end portion side of the reed abutting portion 21 is spherical or tapered, and the reed abutting portion 21 makes point contact with the leaf spring assembly 11.

Specifically, as shown in fig. 2, the plate spring assembly 11 includes a stationary spring 111 and a movable spring 112, both the stationary spring 111 and the movable spring 112 are fixedly connected to the main seat 12, specifically, the main seat 12 is provided with a first clamping position corresponding to the stationary spring 111 and a second clamping position corresponding to the movable spring 112, so that the stationary spring 111 is correspondingly inserted into the first clamping position, and the movable spring 112 is correspondingly inserted into the second clamping position, thereby achieving the purpose of mounting and fixing the movable spring 112 and the stationary spring 111; the contacts include a stationary contact 113 provided on the stationary spring 111, and a movable contact 114 provided on the movable spring 112. The fixed contact 113 is opposite to the movable contact 114, and the contact part 21 is contacted with the movable contact 112, so that the movable contact 112 is deformed under the action of the contact member 2, the movable contact 114 is contacted with the fixed contact 113, and when the acting force on the movable contact 112 is removed, the movable contact 114 is separated from the fixed contact 113, thereby achieving the purpose of changing the on-off state of the circuit.

In the above description, the purpose of achieving small friction contact between the contact part 2 and the plate spring assembly 11 in the relay is achieved through high-pair contact, and according to the electromagnetic induction principle of the relay, as shown in fig. 2, the relay component 1 further includes an armature part 14 and an electromagnet assembly 15, and the armature part 14 is magnetically connected with the electromagnet assembly 15. Specifically, the electromagnet assembly 15 includes a yoke and an electromagnet, the armature member 14 is fixed to the yoke through a hook assembly, wherein one end of the armature member 14 is located at one end of the electromagnet and is magnetically connected to the electromagnet, and the other end of the armature member 14 abuts against the contact member 2, so as to achieve the purpose that the armature member 14 transmits force and motion to the contact member 2, so that the contact member 2 moves, and further the fixed contact 113 of the plate spring assembly 11 is made to contact with or separate from the movable contact 114, but the existing armature member 14 and the contact member 2 also have a phenomenon of extrusion friction in the abutting sliding process, and are also prone to have a problem of abrasion, and a further improvement scheme made by the invention is as follows:

specifically, as shown in fig. 1 to 3, the touch member 2 further has an armature abutting portion 24, the armature abutting portion 24 is in high-order contact with the armature member 14, and drives the armature member 14 to push the touch member 2 to move, that is, the electromagnet assembly 15 flows a certain current in a power-on state, so as to generate an electromagnetic effect, and the armature member 14 attracts the electromagnet assembly 15 under the action of the electromagnetic force, and pushes the touch member 2 to move, so that the fixed contact 113 contacts the movable contact 114. When the electromagnet assembly 15 is powered off, the attraction force of the electromagnetic effect disappears, and the armature member 14 returns to the original position by the reaction force generated by the deformation and recovery of the movable spring 112, so that the movable contact 114 is separated from the stationary contact 113, thereby achieving the purpose of conducting and cutting off the circuit.

Therefore, in summary, because the armature abutting portion 24 is in high-order contact with the armature member 14, the contact area between the armature abutting portion 24 and the armature member 14 is reduced, and further the friction force between the armature abutting portion 24 and the armature member 14 is reduced, which not only effectively improves and even solves the abrasion problem existing in the abutting sliding process between the armature member 14 and the touch member 2, but also makes the relative sliding between the touch member 2 and the armature member 14 smoother, further improves the stability of the relay, and realizes the purpose of small-friction contact between the touch member 2 and the armature member 14 through high-order contact.

In order to achieve the above-mentioned high-side contact between the armature abutting portion 24 and the armature member 14, one preferred solution is that, specifically, as shown in fig. 1 and 3, one side of an end portion of the armature abutting portion 24 is an arc surface or a bent surface, where the end portion is an end of the armature abutting portion 24 abutting against the armature member 14, and the armature abutting portion 24 is in line contact with the armature member 14.

Alternatively, and with particular reference to fig. 1 and 3, the end side of the armature abutment 24 may be spherically or conically shaped, with the armature abutment 24 making point contact with the armature member 14.

Furthermore, in order to make the hinge portions 23 rotate inside the mounting groove 13 more smoothly, as shown in fig. 1 to 3, the hinge portions 23 are cylindrical, and the hinge portions 23 are in line contact with the mounting groove 13. Specifically, the mounting groove 13 may be a groove with a V-shaped bottom, or a rectangular groove, so that the hinge portion 23 is in line contact with the inner side wall of the mounting groove 13, thereby preventing the hinge portion 23 from making surface contact with the mounting groove 13 to generate a large friction force, and further ensuring the smoothness of the touch member 2.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that modifications and embellishments may be made by those skilled in the art without departing from the principles of the present invention and are considered within the scope of the invention.

Claims

1. A low friction contact relay comprising a relay component (1), said relay component (1) having a leaf spring assembly (11), characterized in that:

the relay further comprises a touch part (2) movably connected to the relay part (1);

the contact piece (2) is provided with a reed abutting part (21), the reed abutting part (21) is in high-pair contact with the plate spring assembly (11), and the contact piece (2) is moved to contact or separate the contacts of the plate spring assembly (11) so as to change the on-off state of a circuit.

2. The relay with small friction contact according to claim 1, wherein: one side of the end part of the reed abutting part (21) is an arc-shaped surface or a bent surface, and the reed abutting part (21) is in line contact with the plate spring assembly (11).

3. The relay with small friction contact according to claim 1, wherein: one side of the end part of the reed abutting part (21) is spherical or conical, and the reed abutting part (21) is in point contact with the leaf spring assembly (11).

4. The relay with small friction contact according to claim 1, wherein:

the relay component (1) further comprises an armature member (14);

the touch piece (2) is further provided with an armature abutting part (24), the armature abutting part (24) is in high-order contact with the armature piece (14), and the armature piece (14) is driven to push the touch piece (2) to move.

5. The relay with small friction contact according to claim 4, wherein: one side of the end part of the armature abutting part (24) is an arc-shaped surface or a bent surface, and the armature abutting part (24) is in line contact with the armature piece (14).

6. The low friction contact relay according to claim 4, wherein: the end portion side of the armature abutting portion (24) is spherical or conical, and the armature abutting portion (24) is in point contact with the armature member (14).

7. The low friction contact relay according to claim 4, wherein:

the relay component (1) further comprises a main seat body (12), wherein the main seat body (12) is provided with a mounting groove (13);

the connecting body (22) of the touch piece (2) is also provided with at least one hinge part (23), and the hinge part (23) is in rotating fit with the mounting groove (13).

8. The relay with small friction contact according to claim 7, wherein: the hinge part (23) is cylindrical, and the hinge part (23) is in line contact with the mounting groove (13).

9. The relay with small friction contact according to claim 7, wherein:

the plate spring assembly (11) comprises a static spring plate (111) and a movable spring plate (112), and the static spring plate (111) and the movable spring plate (112) are both fixedly connected to the main base body (12);

the contact comprises a fixed contact (113) arranged on the fixed spring piece (111) and a movable contact (114) arranged on the movable spring piece (112).

10. The relay with small friction contact according to claim 7, wherein: the relay component (1) further comprises an electromagnet assembly (15), and the armature piece (14) is connected with the electromagnet assembly (15) in a magnetic attraction mode.