CN108239855B

CN108239855B - Bracket component of safety switch and washing machine

Info

Publication number: CN108239855B
Application number: CN201611208788.0A
Authority: CN
Inventors: 张鹏程; 张纯锋; 孙云朋
Original assignee: Hefei Haier Washing Machine Co Ltd
Current assignee: Hefei Haier Washing Machine Co Ltd
Priority date: 2016-12-23
Filing date: 2016-12-23
Publication date: 2021-03-19
Anticipated expiration: 2036-12-23
Also published as: CN108239855A

Abstract

The invention provides a bracket assembly of a safety switch and a washing machine, wherein the bracket assembly comprises a base, a bracket hinged on the base and a thrust spring for pushing the bracket to rotate, and the thrust spring is arranged between the base and the bracket and pushes the bracket to rotate to trigger a contact rod of the safety switch. The bracket is hinged, can rotate around the hinged shaft and is used for transmitting the action of the touch piece fixed with the upper cover to the safety switch; the thrust spring is arranged, so that the bracket is pushed to rotate, and the stability is improved; after the touch piece touches the bracket, the bracket is driven to rotate by the thrust spring, and then the bracket triggers a touch rod of the safety switch; the bracket component has simple structure and good working stability, and is favorable for shortening the height of opening the upper cover when the safety switch is triggered.

Description

Bracket component of safety switch and washing machine

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a bracket assembly of a safety switch and a washing machine with the bracket assembly.

Background

In the washing process of the full-automatic washing machine, the inner cylinder is in a running state, even a high-speed rotating state, and when an upper cover of the washing machine is manually opened, in order to avoid causing damage to a human body, a safety switch is connected in series on a control circuit; when the upper cover of the washing machine is opened to a certain height, the elastic sheet of the safety switch can be touched, so that the safety switch detects the opening of the upper cover of the washing machine and feeds the opening back to the computer board to stop the washing of the washing machine, and the protection effect is achieved. Because the contact of the safety switch and the contact rod connected with the upper cover must have a certain distance, the false triggering of the contact rod on the contact rod caused by the vibration of the washing machine is avoided. At present, the safety switch is triggered only when the upper cover is opened to a larger height, and the transmission structure of the safety switch device is complex, easy to break down and high in cost; and often causes circuit failure of the safety switch due to corrosion by water or water vapor during long-term use of the safety switch.

Disclosure of Invention

The invention provides a bracket component of a safety switch, which has simple structure and good working stability and is beneficial to shortening the opening height of an upper cover for triggering the safety switch.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

the utility model provides a bracket component of safety switch, includes the base, articulates the support on the base and promotes the rotatory thrust spring of support, thrust spring sets up between base and the support, promote the support rotates and triggers safety switch's feeler lever.

Furthermore, both ends of the bracket are respectively a touch part matched with the touch part and a trigger part matched with a touch rod of the safety switch, and the distance from the trigger part to the hinge shaft is greater than the distance from the touch part to the hinge shaft.

Furthermore, the base is also provided with a stop block which extends towards the bracket and stops the bracket from continuously rotating.

Furthermore, the bracket is provided with a first inclined part matched with the stop block, the first inclined part is in surface contact with the stop block, and the first inclined part and the triggering part are positioned on the same side of the hinged shaft.

Further, the inclination angle of the first inclined part is equal to the rotation angle of the bracket.

Furthermore, the bracket is provided with a body hinged with the base and a first connecting part which is arranged between the body and the touch part and inclines towards the direction close to the base.

Further, the bracket is provided with a body hinged with the base and an extending part arranged in parallel with the body, the first inclined part is connected with the body and the extending part, and the triggering part is positioned on the outer side of the extending part.

Further, the triggering portion is flush with the body, and a second inclined portion is arranged between the triggering portion and the extending portion.

Furthermore, two sides of the touch part are respectively provided with a flange extending downwards, and when the bracket component is in a non-triggering state, the touch part is positioned in a notch formed by the touch part and the flange.

Furthermore, folding edges far away from the direction of the base are arranged on two sides of the support.

Based on the bracket component of the safety switch, the invention also provides a washing machine which is provided with the safety switch bracket, is beneficial to shortening the opening height of the upper cover triggering the safety switch, and has simple structure and good action stability.

A washing machine comprises a control panel seat, an upper cover hinged on the control panel seat and a safety switch linked with the upper cover, wherein a bracket assembly of the safety switch for linkage is arranged between the upper cover and the safety switch.

Furthermore, the safety switch is arranged on the control panel seat, and a through hole for the feeler lever of the safety switch to extend downwards into the control panel seat is formed in the control panel seat; the bracket component is fixed on the lower end face of the control panel seat, the upper cover is provided with a touch piece extending towards the bracket, and the touch piece is tightly pressed on the bracket and enables the thrust spring to be compressed.

Furthermore, be equipped with the elastic sealing pad between safety switch and the control panel seat, set up on the elastic sealing pad the via hole that the feeler lever passed, the via hole is from the top down round platform type, the lower terminal surface diameter of via hole is less than the diameter of feeler lever.

Further, the via hole also has a downwardly extending raised lip.

The bracket component of the safety switch provided by the invention can rotate around the hinge shaft by arranging the hinged bracket and is used for transmitting the action of the touch component fixed with the upper cover to the safety switch; the thrust spring is arranged, so that the bracket is pushed to rotate, and the stability is improved; after the touch piece touches the bracket, the bracket is driven to rotate by the thrust spring, and then the bracket triggers a touch rod of the safety switch; the bracket component has simple structure and good working stability, and is favorable for shortening the height of opening the upper cover when the safety switch is triggered.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a bracket assembly of a safety switch according to the present invention;

FIG. 2 is an enlarged schematic view of the bracket assembly of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 from another angle;

FIG. 4 is an enlarged schematic view of the gasket of FIG. 1;

FIG. 5 is a schematic sectional view taken along line A-A in FIG. 4;

FIG. 6 is an enlarged schematic view of the fixing frame of FIG. 1;

FIG. 7 is a schematic view of the rotational relationship between the upper cover and the trip member;

FIG. 8 is a graphical representation of rotational operating parameters of the stent.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 "inside", "upper", "lower", "left", "right", etc. indicate the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 6, which are an embodiment of a bracket assembly of a safety switch according to the present invention, the bracket assembly 10 is fixed on a lower end surface of a washing machine control panel seat 40, an upper cover 30 is hinged to the control panel seat 40 to be opened and closed, a touch member 301 cooperating with the bracket assembly 10 and transmitting an opening operation of the upper cover 30 is disposed on the upper cover 30, and the safety switch 20 is fixed on the control panel seat 40; the bracket assembly 10 is located between the upper cover 30 and the safety switch 20 for transmitting an opening motion of the upper cover 30 to the safety switch 20.

Referring to fig. 2, the bracket assembly 10 of the safety switch includes a base 1, a bracket 2 hinged to the base 1, and a push spring 3 for pushing the bracket 2 to rotate, wherein the push spring 3 is disposed between the base 1 and the bracket 2 for pushing the bracket 2 to rotate to trigger a contact lever of the safety switch 20. The bracket 2 is hinged and can rotate around a hinge shaft, and is used for transmitting the action of the touch piece 301 fixed with the upper cover 30 to the safety switch 20; the thrust spring 3 is arranged, so that the bracket 2 is pushed to rotate, and the stability is improved; after the trigger 301 triggers the bracket 2, the bracket 2 is rotated under the pushing of the thrust spring 3, so that the bracket 2 triggers the feeler lever 201 of the safety switch 20; the bracket assembly 10 has a simple structure and good operation stability, and is advantageous in shortening the height at which the upper cover is opened when the safety switch is triggered.

In this embodiment, two ends of the bracket 2 are respectively a trigger part 22 engaged with the trigger 301 and a trigger part 21 engaged with the contact rod 201 of the safety switch 20; when the upper cover 30 is in the closed state, the trigger 301 gives an upward force to the trigger 22, so that the thrust spring 3 is in a compressed state; when the upper cover 30 is opened, the trigger 301 rotates downward around the hinge shaft 302 of the upper cover 30, that is, the trigger 302 moves downward, and at this time, the trigger 22 rotates downward under the push of the thrust spring 3; that is, the stand 2 rotates clockwise, the triggering part 21 rotates upward, and the feeler lever 201 of the safety switch 20 is triggered.

Referring to fig. 7, setting the power-on and power-off height H1 of the safety switch 20 to be 20-50 mm, namely, triggering the safety switch 30 to start working when the vertical distance from the opening height of the upper cover 30 of the washing machine to the tray is 20-50 mm, and stopping the washing program of the washing machine; wherein L1 is the distance from the front end of the upper cover 30 to the hinge shaft 302 thereof, and L2 is the distance from the rear end of the trip member 301 to the hinge shaft 302 of the upper cover 30. Referring to fig. 8, for the illustration of the rotating operating parameters of the bracket 2, L3 is the distance from the trigger 22 to the hinge shaft 23, and L4 is the distance from the trigger 21 to the hinge shaft 23, by setting the lengths and the proportional relationship of L3 and L4, the triggering distance between the trigger 21 and the trolley 201 can be ensured, and the triggering accuracy can be increased.

Specifically, the distance from the trigger 21 to the hinge shaft 23 is greater than the distance from the trigger 22 to the hinge shaft 23, which is beneficial to increase the trigger distance between the trigger 21 and the feeler lever 201.

In this embodiment, referring to fig. 3, in order to prevent the trigger portion 21 from continuing to move upward after triggering the feeler lever 201 and preventing the feeler lever 201 from continuing to receive an upward pushing force, the base 1 is further provided with a stop block 11 extending toward the bracket 2 and stopping the bracket 2 from continuing to rotate; therefore, after the trigger part 21 rotates upwards for a certain angle, the touch bar 201 is triggered, the bracket 2 is stopped by the stop block 11, and the rotation in the trigger direction cannot be continued, so that the touch bar 201 is prevented from continuing to be pushed upwards by the trigger part 21 after triggering the safety switch, the safety switch 20 is prevented from being damaged, and the service life is prevented from being influenced.

In this embodiment, the bracket 2 is provided with a first inclined portion 24 matched with the stopper 11, and when the first inclined portion 24 rotates to the stopper 11, the first inclined portion 24 is in surface contact with the stopper 11; by arranging the first inclined part 24, the first inclined part 24 and the stop block 11 are in surface contact, so that the contact area of the stop is increased, the rotation of the support 2 can be stopped conveniently, the pressure applied on the unit contact area is reduced, and the stress performance of the stop block 11 can be improved conveniently. Specifically, the inclination angle of the first inclined portion 24 is set to be equal to the rotation angle of the bracket 2, the upper end surface of the stopper 11 is a plane, and after the bracket 2 rotates by the inclination angle of the first inclined portion 24, the first inclined portion 24 is in a horizontal state and contacts the upper end surface of the stopper 11. The first inclined portion 24 and the triggering portion 21 are located on the same side of the hinge shaft 23, and the thrust spring 3 is located on the other side of the hinge shaft 23, that is, the first inclined portion 24 and the thrust spring 3 are located on both sides of the hinge shaft 23, respectively.

In this embodiment, the bracket 2 has a body 25 hinged to the base 1, and a first connecting portion 26 disposed between the body 25 and the touch portion 22 and inclined toward the base 1. When the upper cover 30 is in a closed state, the body 25 is in a horizontal state, and the touch part 22 is close to the upper side by arranging the first connecting part 26 inclined upwards and outwards, so that the arrangement of the touch rod 301 is facilitated, and the touch rod 301 can extend backwards in the direction of the rotating shaft 302 of the upper cover 30; the touching part 22 is horizontal, the touching rod 301 is horizontal and is pressed against the lower end of the touching part 22, and the touching part 22 is provided with upward supporting force.

The bracket 2 is also provided with an extension part 27 arranged in parallel with the body 25, the first inclined part 24 connects the body 25 and the extension part 27, and the trigger part 21 is positioned outside the extension part 27; the trigger portion 21 is flush with the body 25, and a second inclined portion 28 is provided between the trigger portion 21 and the extension portion 27. The trigger part 21 is flush with the body 25, so that the stability of the trigger part 21 in the rotating process is improved, and the trigger of the feeler lever 201 is facilitated; by providing the first and second

inclined portions

24, 28, it is also advantageous to increase the structural strength of the bracket 2.

In this embodiment, the two sides of the bracket 2 are provided with the folding edges 29 far away from the base direction, and the arrangement of the folding edges 29 is beneficial to increasing the structural strength of the bracket 2.

Referring to fig. 1 and 6, for the fixation of the safety switch 20 on the control panel seat 40, a fixing frame 202 is arranged on the safety switch 20, a sleeve hole 2022 for sleeving the safety switch 20 is arranged on the fixing frame 202, and the fixing frame 202 is sleeved on the outer side of the safety switch 20; in order to avoid the rotation of the safety switch 20 in the sleeve hole 2022, a positioning block is disposed on the safety switch 20, and a positioning groove 2023 matched with the positioning block is disposed on the fixing frame 202. The fixing frame 202 has fixing edges 2021 formed by bending downward at both ends thereof, the fixing edges 2021 are attached to the control panel base 40, and the fixing edges 2021 are fixed to the control panel base 40 by screws. The control panel base 40 is provided with a through hole for the downward insertion of the contact rod 201 of the safety switch 20.

Referring to fig. 1, 4 and 5, in order to prevent water and steam from entering the safety switch 20, an elastic sealing gasket 50 is disposed between the safety switch 20 and the control panel seat 40, a through hole 501 through which the feeler lever 201 passes is formed in the elastic sealing gasket 50, the through hole 501 is in a circular truncated cone shape from top to bottom, and the diameter of the lower end surface of the through hole 501 is smaller than that of the feeler lever 201. Therefore, the contact rod 201 is tightly matched with the via hole 501, and no gap exists between the contact rod 201 and the via hole 501, so that water vapor cannot enter the safety switch 20; the through hole 501 is in a circular truncated cone shape from top to bottom, the diameter of the upper end of the through hole 501 is larger than that of the feeler lever 201, namely a certain gap is formed between the feeler lever 201 and the upper end of the through hole 501, so that when the feeler lever 201 moves upwards to trigger the safety switch 20, the lower end of the through hole 501 moves upwards along with the feeler lever 201, and the sealing between the feeler lever 201 and the through hole 501 is ensured; meanwhile, the upper end of the via hole 501 is prevented from stopping the upward movement of the feeler lever 201, and the sensitivity of the feeler lever 201 is prevented from being influenced.

In this embodiment, the via hole 501 further has a lip 5011 extending downward, which is beneficial to increasing the sealing between the via hole 501 and the contact rod 201 and improving the sealing effect.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A bracket component of a safety switch is characterized by comprising a base, a bracket hinged on the base and a thrust spring pushing the bracket to rotate, wherein the thrust spring is arranged between the base and the bracket and pushes the bracket to rotate to trigger a contact rod of the safety switch; the base is further provided with a stopping block which extends towards the support and stops the support from continuously rotating, the support is provided with a first inclined part matched with the stopping block, and the inclination angle of the first inclined part is equal to the rotation angle of the support.

2. The bracket assembly of claim 1, wherein the bracket has a trigger part at each end for cooperating with the trigger part and a trigger part for cooperating with the trigger rod of the safety switch, and the distance from the trigger part to the hinge shaft is greater than the distance from the trigger part to the hinge shaft.

3. The bracket assembly of claim 1, wherein the first angled portion is in surface contact with the stop.

4. The bracket assembly according to any one of claims 1 to 3, wherein the bracket has a body hinged to the base, and a first connecting portion disposed between the body and the trigger and inclined in a direction approaching the base.

5. The bracket assembly of claim 2, wherein the bracket has a body hinged to the base and an extension portion disposed parallel to the body, the first inclined portion connects the body and the extension portion, and the trigger portion is located outside the extension portion.

6. A washing machine, comprising a control panel base, an upper cover hinged on the control panel base, and a safety switch linked with the upper cover, characterized in that a bracket assembly of the safety switch of any one of claims 1 to 5 is arranged between the upper cover and the safety switch for linkage.

7. The washing machine as claimed in claim 6, wherein the safety switch is provided on a control panel base, and the control panel base is provided with a through hole for the feeler lever of the safety switch to extend downwards into the control panel base; the bracket component is fixed on the lower end face of the control panel seat, the upper cover is provided with a touch piece extending towards the bracket, and the touch piece is tightly pressed on the bracket and enables the thrust spring to be compressed.

8. The washing machine as claimed in claim 6, wherein an elastic sealing pad is disposed between the safety switch and the control panel seat, a through hole through which the contact rod passes is formed in the elastic sealing pad, the through hole is in a shape of a truncated cone from top to bottom, and the diameter of the lower end surface of the through hole is smaller than that of the contact rod.

9. A washing machine as claimed in claim 8 wherein the via also has a downwardly extending raised lip.