CN215266094U - Reset device of relay and relay comprising same - Google Patents

Abstract

The utility model relates to a resetting means of relay and contain this resetting means's relay. The reset device comprises: the bracket is arranged on the shell of the relay; a button assembly disposed to partially protrude outside the holder and to be capable of being pressed toward the housing; the driving piece is arranged on the bracket, is connected to an operating mechanism of a contact mechanism of the relay, and can move to a reset position under the driving of the button assembly so as to enable the contact mechanism to be switched on, wherein when the driving piece is in the reset position, the relay is in a state to be switched off; and the buffer mechanism is arranged on the bracket, is connected to the driving piece and can move under the driving of the button assembly to apply a force to the driving piece so as to keep the driving piece at a reset position.

Description

Reset device of relay and relay comprising same

Technical Field

The utility model relates to a resetting means of relay and contain this resetting means's relay.

Background

A relay is an electronic control device, which is usually used in an automatic control circuit, and is actually an "automatic switch" that uses a small current to control a large current. Therefore, the relay plays the roles of automatic regulation, safety protection, switching circuit and the like in the circuit.

After the relay is tripped, namely after the contact mechanism of the relay is opened, the relay can be enabled to continue to work through the reset button. Generally, in some relays, a reset button can drive a reset driving mechanism to drive a contact mechanism to close. In order to avoid that the reset drive mechanism is in a position for closing the contact mechanism for a long time, a free-trip function is usually added to the reset drive mechanism. In some prior art relays, the free-trip function is typically achieved by quickly releasing the reset actuator (e.g., actuating a slide) after the reset button actuates the reset actuator to move to the reset position.

However, in the above release process, since the time is very short, a short-time shock is easily generated, and there is a possibility that a problem such as the bounce of the driving slider is caused, resulting in unstable switching of the state of the relay.

Therefore, providing a buffer to the above release process without affecting the free-trip function has become an urgent problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a resetting means of relay and contain this resetting means's relay, resetting means additionally contains buffer gear, can keep the actuating mechanism that resets in the reset position and do not influence the free-trip function of actuating mechanism that resets. Furthermore, the utility model discloses a resetting means simple structure, dependable performance and low cost.

The above object is achieved by a reset device of a relay and a relay described below.

The utility model relates to a resetting means of relay, resetting means includes:

the bracket is arranged on the shell of the relay;

a button assembly disposed to partially protrude outside the holder and to be capable of being pressed toward the housing;

the driving piece is arranged on the bracket, is connected to an operating mechanism of a contact mechanism of the relay, and can move to a reset position under the driving of the button assembly so as to enable the contact mechanism to be switched on, wherein when the driving piece is in the reset position, the relay is in a state to be switched off; and

the buffer mechanism is arranged on the bracket, is connected to the driving piece and can move under the driving of the button assembly to apply a force to the driving piece so as to keep the driving piece at a reset position.

In one embodiment, the damping mechanism comprises: a bumper drive connected to and movable with the button assembly; the buffer sliding block is arranged to be capable of moving from a first position to a second position under the driving of the buffer driving piece; and the elastic piece acts on the buffer slide block and the driving piece and can apply elastic biasing force to the driving piece in the process that the buffer slide block moves from the first position to the second position so as to keep the driving piece at the reset position.

In one embodiment, the damping slider is movable from the second position to the first position under the influence of the elastic member.

In one embodiment, the buffering slider is provided with an inclined surface, and the buffering driving member is provided with a driving surface matched with the inclined surface, so that the buffering slider can be driven to move in a second direction by the movement of the buffering driving member in a first direction, wherein the first direction is perpendicular to the second direction.

In one embodiment, the bracket is provided with a groove extending along the second direction, and the buffer slide block is arranged in the groove.

In one embodiment, the elastic member is a torsion spring, a first arm of the torsion spring is disposed on the driving member, and a second arm of the torsion spring is disposed on the bracket through a slot in the cushion slider, wherein the slot extends in the second direction.

In one embodiment, when an external force acts on the button assembly, the button assembly moves in a first direction, the buffering driving member moves along with the button assembly in the first direction and drives the buffering slider to move from a first position to a second position in a second direction, wherein in the process, the buffering slider pulls the second arm of the torsion spring through the first end wall of the slot, and the first arm of the torsion spring exerts elastic biasing force on the driving member.

In one embodiment, when the external force is no longer applied to the button assembly, the button assembly moves in a direction opposite the first direction, the damping actuator moves with the button assembly in the direction opposite the first direction, and the actuator held in the reset position pulls the first arm of the torsion spring such that the damping slider moves in a direction opposite the second direction from the second position to the first position under the influence of the second arm of the torsion spring, wherein the second arm of the torsion spring is proximate to a second end wall of the elongated hole opposite the first end wall when the damping slider is in the first position and the actuator is in the reset position.

In one embodiment, the reset device further comprises: a rotary member rotatable about a rotation axis from an initial position to a drive position upon actuation of the button assembly; and a rotating elastic member configured to apply an elastic biasing force to the rotating member so that the rotating member returns to an initial position after rotating to a driving position, wherein the rotating member drives the driving member to move from the trip position to the reset position when the rotating member rotates from the initial position to the driving position.

The utility model discloses still relate to a relay, the relay includes as above resetting means.

Drawings

The advantages and objects of the present invention will be better understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:

fig. 1a to 1d show schematic views of a reset device for a relay according to the present invention, wherein fig. 1a shows a perspective schematic view of the reset device, fig. 1b shows an exploded schematic view of the reset device, fig. 1c shows a top view of the reset device, and fig. 1d shows a cross-sectional view of the reset device;

fig. 2a to 2d correspond to fig. 1a to 1d and show a schematic representation of a further phase of an embodiment of a reset device for a relay according to the invention;

fig. 3a to 3d correspond to fig. 1a to 1d and show a schematic view of a further phase of an embodiment of a resetting device for a relay according to the invention; and

fig. 4a to 4d, which correspond to fig. 1a to 1d, show a schematic illustration of a further stage of an embodiment of a resetting device for a relay according to the invention.

Detailed Description

Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "first direction", "second direction", "third direction", etc. herein are described with respect to the drawings of the present invention, unless otherwise specified. The description of "first" and its variants is merely for the purpose of distinguishing between the parts and does not limit the scope of the invention, which can be written as "second" and so on without departing from the scope of the invention.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the respective drawings.

Fig. 1a to 1d only schematically show the structure of the reset device for a relay according to the present invention. For ease of describing the movement of the resetting device to the various components, an xyz coordinate system is shown in fig. 1a to fig.

As shown in fig. 1a to 1d, the reset means includes: the bracket 1 is arranged on a shell 10 of the relay; a button assembly 2 provided to partially protrude outside the holder 1 and to be capable of being pressed toward a housing 10 of a relay; and a driving member 3 disposed on the bracket 1, connected to an operating mechanism 4 (e.g., an operating handle) of the contact mechanism of the relay, and movable to a reset position by the actuation of the button assembly 2 to close the contact mechanism 4. When the driving member 3 is in the reset position, the relay is in a state to be disconnected. The resetting device also comprises a buffer mechanism which is arranged on the bracket 1, is connected to the driving piece 3 and can move under the driving of the button assembly 2 to exert a force on the driving piece 3 so as to keep the driving piece 3 at the resetting position.

For example, the buffer mechanism includes: a buffer driver 5 connected to the button assembly 2 and movable together with the button assembly 2; a damping slide 6 which is arranged to be movable from a first position to a second position under the drive of the damping drive 5; and the elastic piece 7 acts on the buffer slide block 6 and the driving piece 3 and can apply elastic biasing force to the driving piece 3 in the process that the buffer slide block 6 moves from the first position to the second position so as to keep the driving piece 3 at the reset position. Furthermore, the damping slide 6 can be moved from the second position into the first position by the spring element 7. In other examples, the damping slider 6 is moved from the second position toward the first position by the elastic member 7, but may not be moved to the first position. In this case, the damping slide 6 is only moved into the first position by the spring 7 after the relay has tripped, i.e. after the drive element 3 has moved into the tripping position.

As shown in fig. 1b and 1d, the buffer slider 6 is provided with an inclined surface 61, and the buffer driver 5 is provided with a driving surface 51 engaged with the inclined surface 61, so that the buffer slider 6 can be driven to move in the second direction y by the buffer driver 5 moving in the first direction x. As shown in fig. 1d, the first direction x is perpendicular to the second direction y.

For example, the inclined surface 61 is a 45 ° inclined surface, and the drive surface 51 is also a 45 ° inclined surface, i.e. at an angle of 45 ° to the first direction x. Of course, the present invention does not limit the inclination angle between the inclined surface 61 and the driving surface 51 as long as the driving can be realized.

For example, the buffer driver 5 is fixed to the push button assembly 2. In some examples, the cushioned drive 5 is integrally formed with the button in the button assembly 2.

In order to guide the movement of the damping slider 6, a groove 8 extending in a second direction is provided in the frame 1, as shown in fig. 1b, and the damping slider 6 is disposed in the groove 8. Of course, the utility model discloses can also adopt the guide rail to guide buffer slide 6's removal, the utility model discloses do not restrict buffer slide 6's the realization form of guide piece.

Referring again to fig. 1a to 1d, the elastic member 7 is a torsion spring, a first arm 71 of the torsion spring is disposed on the driving member 3, and a second arm 72 of the torsion spring is disposed on the bracket 1 through the slot 62 in the cushion slider 6. The slit hole 62 extends in the second direction y, for example, the range of the slit hole 62 in the second direction is larger than that in the first direction.

For example, the parameters of the damping spring 7 may be selected to provide different force ranges, and thus may be adapted to various types of relays and relay drive mechanisms.

Referring again to fig. 1a to 1d, the reset device further comprises: a rotary member 9 rotatable about a rotation axis a from an initial position to a driving position by the push button assembly 2; and a rotation elastic member 11 provided to apply an elastic biasing force to the rotation member 9 so that the rotation member 9 can return to an initial position after rotating to a driving position. When the rotating member 9 rotates from the initial position to the driving position, the rotating member 9 drives the driving member 3 to move from the trip position to the reset position. When the rotary member 9 returns to its initial position, the rotary member 9 moves away from the driving member 3, i.e. the driving member 3 is released. Thereby, a free-trip function is realized.

For example, the rotating elastic member 11 is a torsion spring having one arm fixed to the bracket 1 and the other arm fixed to the rotating member 9.

The button assembly 2 is constituted, for example, by a button and a spring (not shown in the figure) provided thereon. When an external force acts on the button, the button assembly 2 can be considered to move in the first direction x against the force exerted by the spring; when the external force is removed, the button assembly 2 can be considered to move in the direction opposite to the first direction x by the spring.

Furthermore, the button assembly comprises a "crescent shaped" protrusion 21 provided on the button. The inclined lower surface of the protrusion may drive one end of the rotary member 9 when the push button is moved in the first direction x, causing the rotary member 9 to rotate about the axis of rotation a (shown by the dashed line extending in the x-direction in fig. 1 a) in a clockwise direction in fig. 1a and 1c from the initial position to the driven position. After reaching the driving position, the inclined lower surface of the "crescent" protrusion no longer acts on the rotary member 9, the end moves onto the crescent upper surface of said "crescent" protrusion, and the rotary member 9 rotates about the axis of rotation a, counter-clockwise in fig. 1a and 1c, back to its initial position, guided by the crescent upper surface and under the action of the rotating elastic member 11.

The various stages of the resetting device are described below in conjunction with the figures.

Fig. 1a to 1d show the reset device after the relay is tripped and the button assembly is not pressed. As shown in fig. 1b, the operating member 4 is in the right-hand position in the figure, in which the contact member of the relay is opened. As shown in fig. 1c, the drive 3 is in the tripped position, i.e. the position in which the contact mechanism is opened. As shown in fig. 1d, the damping slide 6 is in the first position. At this time, the second arm 72 of the buffer spring 7 approaches the first end wall 621 of the slit hole 62 or abuts on the first end wall 621.

Figures 2a to 2d show the reset device when the button assembly is pressed and the driver is moved to the reset position. As can be seen by comparing fig. 1d with fig. 2d, the button assembly 2 is moved towards the housing along the first direction x. As can be seen from comparing fig. 1c and 2c, the rotating member 9 rotates clockwise and drives the driving member 3 to move in a third direction (i.e., -z direction) to the reset position, and further drives the operating mechanism 4 of the contact mechanism to move to the left position, as shown in fig. 2b, so that the contact mechanism is closed and the relay can continue to operate.

Fig. 3a to 3d show the reset device when the button assembly is pressed but the rotary member returns to the initial position. As can be seen by comparing fig. 2a and 3a, the rotary member 9 rotates counterclockwise, thus moving away from the driving member 3, and a free-trip function is realized. Further, as shown in fig. 3d, the cushion slider 6 is in the second position, and pulls the second arm 72 of the cushion elastic member 7 through the first end wall 621 of the slit hole. As shown in fig. 3b, the angle of the torsion spring becomes smaller and the first arm 71 of the damping spring 7 exerts a resilient biasing force on the driving member 3, thereby holding the driving member 3 in the reset position.

Figures 4a to 4d show the reset device when the button assembly is no longer pressed. As can be seen from a comparison of fig. 3d and 4d, the button assembly 2 is moved in a direction opposite to the first direction x to its initial state, and the damping slider 6 is moved to its first position. As shown in fig. 4a and 4c, the driving member 3 is in the resetting position and the rotating member 9 is in the initial position. As the driving member 3 pulls the first arm 71 of the buffering elastic member 7, the second arm 72 of the buffering elastic member 7 approaches the second end wall 622 of the slit hole 62 opposite to the first end wall 621. For example, the second arm 72 may abut the second end wall 622. In other examples, the second arm 72 may also be located at a middle region of the slot 62.

When an external force acts on the button assembly 2, the button assembly 2 moves along the first direction x, the rotating member 9 is driven by the button assembly 2 to rotate clockwise around the rotation axis a, and the driving member 3 is driven to move along the-z direction from the trip position shown in fig. 1c to the reset position shown in fig. 2 c. The rotary member 9 then immediately returns to its initial position, as shown in figure 3 a. Furthermore, the damping actuator 5 moves with the push button assembly in the first direction x and drives the damping slider 6 to move in the second direction y from the first position (as shown in fig. 1 d) to the second position (as shown in fig. 3 d). In this process, the damping slider 6 pulls the second arm 72 of the torsion spring through the first end wall 621 of the elongated hole 62, and the first arm 71 of the torsion spring exerts an elastic biasing force on the driving member 3.

When the external force no longer acts on the button assembly 2, the button assembly 2 moves in a direction opposite to the first direction x, the buffer driving member 5 moves along with the button assembly in the direction opposite to the first direction x, and the driving member 3, which is kept in the reset position, pulls the first arm 71 of the torsion spring, so that the buffer sliding block 6 moves from the second position shown in fig. 3d to the first position shown in fig. 1d in a direction opposite to the second direction y under the action of the second arm 72 of the torsion spring.

The utility model discloses a buffering structure makes can provide the holding power of a period for resetting means's actuating mechanism, has avoided actuating mechanism's spring and unstability, and free-trip mechanism and buffer gear do not influence each other. Furthermore, the utility model discloses a structure makes resetting means simple structure, dependable performance and low cost.

Moreover, the technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention to achieve the aim of the invention.

Claims (10)

1. A reset device for a relay, the reset device comprising:

the bracket is arranged on the shell of the relay;

a button assembly disposed to partially protrude outside the holder and to be capable of being pressed toward the housing;

the driving piece is arranged on the bracket, is connected to an operating mechanism of a contact mechanism of the relay, and can move to a reset position under the driving of the button assembly so as to enable the contact mechanism to be switched on, wherein when the driving piece is in the reset position, the relay is in a state to be switched off; and

the buffer mechanism is arranged on the bracket, is connected to the driving piece and can move under the driving of the button assembly to apply a force to the driving piece so as to keep the driving piece at a reset position.

2. The reduction assembly of claim 1, wherein the damping mechanism comprises:

a bumper drive connected to and movable with the button assembly;

the buffer sliding block is arranged to be capable of moving from a first position to a second position under the driving of the buffer driving piece; and

the elastic piece acts on the buffering slide block and the driving piece and can apply elastic biasing force to the driving piece in the process that the buffering slide block moves from the first position to the second position so as to keep the driving piece at the reset position.

3. The resetting device of claim 2,

the buffering slide block can move from the second position to the first position under the action of the elastic piece.

4. The resetting device of claim 3,

the buffer sliding block is provided with an inclined surface, and the buffer driving piece is provided with a driving surface matched with the inclined surface, so that the buffer sliding block can be driven to move in a second direction by the buffer driving piece moving in a first direction, wherein the first direction is vertical to the second direction.

5. The resetting device of claim 4,

the support is provided with a groove extending along the second direction, and the buffer sliding block is arranged in the groove.

6. The resetting device of claim 5,

the elastic piece is a torsion spring, a first arm of the torsion spring is arranged on the driving piece, a second arm of the torsion spring penetrates through a long and narrow hole in the buffering sliding block and is arranged on the support, and the long and narrow hole extends along a second direction.

7. The resetting device of claim 6,

when an external force acts on the button assembly, the button assembly moves along the first direction, the buffer driving piece moves along with the button assembly along the first direction and drives the buffer sliding block to move from the first position to the second position in the second direction,

in the process, the buffer sliding block pulls the second arm of the torsion spring through the first end wall of the long and narrow hole, and the first arm of the torsion spring exerts elastic biasing force on the driving piece.

8. The resetting device of claim 7,

when the external force is no longer applied to the button assembly, the button assembly moves in a direction opposite to the first direction, the buffer driving piece moves along with the button assembly in the direction opposite to the first direction, the driving piece kept in the reset position pulls the first arm of the torsion spring, and the buffer sliding block moves from the second position to the first position in the direction opposite to the second direction under the action of the second arm of the torsion spring,

when the buffering slide block is located at the first position and the driving piece is located at the reset position, the second arm of the torsion spring is close to the second end wall, opposite to the first end wall, of the long and narrow hole.

9. The resetting device of any one of claims 1 to 8, further comprising:

a rotary member rotatable about a rotation axis from an initial position to a drive position upon actuation of the button assembly; and

a rotation elastic member configured to apply an elastic biasing force to the rotation member so that the rotation member returns to an initial position after rotating to a driving position,

when the rotating piece rotates from the initial position to the driving position, the rotating piece drives the driving piece to move from the tripping position to the reset position.

10. A relay, characterized in that it comprises a reset device according to any one of claims 1 to 9.

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