Wall switch

Abstract

The utility model relates to the field of electrical engineering and electrical appliances, and discloses a wall switch, which comprises a base, a contact piece assembly, a driving piece, a pressing plate and a key, the pressing plate and the contact piece assembly are arranged in the base, the contact piece assembly comprises a movable contact piece and a static contact piece, and the key covers the outer side of the pressing plate and is rotatably connected with the pressing plate through a first rotating shaft. The driving piece is rotationally connected with the pressing plate through a second rotating shaft, the first rotating shaft and the second rotating shaft are eccentrically arranged, a clamping groove is formed in the end, away from the second rotating shaft, of the driving piece, part of the structure of the movable contact piece extends into the clamping groove, a shifting fork is fixed to the key, the shifting fork penetrates through the pressing plate and drives the driving piece to swing relative to the pressing plate, and the driving piece drives the movable contact piece to turn over; the driving piece comprises a driving body and a driving part in contact with the shifting fork, the clamping groove and the second rotating shaft are both arranged on the driving body, the distance between the driving part and the first rotating shaft is L1, and the distances between the driving part and the second rotating shaft are L2 and L2lt; and L1, a relatively large driving piece can be driven to swing at a relatively large angle by a relatively small key turning angle, and the reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrician electrical appliances, especially a wall switch. BACKGROUND

[0002] With the pursuit of the consumer to the home decoration simple, the beautiful, the wall switch small angle, the thin design has become the trend. The wall switch is realized through the press key, the transmission part on the pressing piece is driven by the key to control the switch moving contact piece swing to realize the on-off of the circuit. However, in the whole driving execution process, the key and the pressing piece will produce a certain stroke loss due to the assembly precision error and the press deformation, the small angle switch is sensitive to the stroke loss, because the outer key turning angle becomes smaller, the turning angle of the switch driving part is reduced, when the stroke loss reaches a certain value, the driving piece switch will be pressed invalid. SUMMARY

[0003] In order to solve the technical problem that the small angle switch is easy to fail, the utility model provides a wall switch, the switch is not easy to press invalid due to stroke loss, and the reliability is high.

[0004] The specific technical scheme of the utility model is as follows: a wall switch, including base, contact piece assembly, driving piece, pressing plate and key, the pressing plate and the contact piece assembly are installed in the base, the contact piece assembly includes moving contact piece and static contact piece, the key is covered on the outer side of the pressing plate and is connected with the pressing plate through the first rotating shaft rotation, the driving piece is connected with the pressing plate through the second rotating shaft rotation, the first rotating shaft and the second rotating shaft are eccentric, one end of the driving piece away from the second rotating shaft is equipped with the clamping groove, and the part structure of the moving contact piece extends into the clamping groove, the key is fixed with the fork, the fork passes through the pressing plate and drives the driving piece to swing relative to the pressing plate, and the driving piece drives the moving contact piece to overturn.

[0005] After the switch is pressed, the button is flipped relative to the pressing plate with the first rotating shaft as the center, and the driving member is swung with the second rotating shaft as the center through the yoke driving, the driving member drives the moving contact piece to flip between the two ends of the static contact piece, and the moving contact piece is in contact or separated from the two ends of the static contact piece, realizing the on-off of the circuit. The first rotating shaft and the second rotating shaft are eccentrically arranged, that is, the first rotating shaft and the second rotating shaft are not coaxial, and the driving distance L1 is longer than the transmission distance L2, so that a smaller button flip angle can drive a larger driving member swing angle, the larger driving member swing angle ensures the reliability of the driving member driving, the switch is not easy to be pressed and invalid due to stroke loss, the manufacturing and assembly precision of the switch parts is reduced, at the same time, the larger driving member flip angle also improves the contact pressure between the moving contact piece and the static contact piece, so that the contact between the moving contact piece and the static contact piece is stable, and the stability and reliability of the switch performance are improved. The distance between the above-mentioned driving part and the first rotating shaft is specifically the distance between the driving part and the yoke contact point to the first rotating shaft, and the distance between the driving part and the second rotating shaft is specifically the distance between the driving part and the yoke contact point to the second rotating shaft.

[0006] As preferred, the distance between the card slot and the second rotating shaft is L3, and L2 < L3.

[0007] In the above technical solution, the distance between the card slot and the second rotating shaft is specifically the distance between the moving contact piece and the driving member contact point to the second rotating shaft. When the driving member swings, because the swing angle is fixed and the distance between the moving contact piece and the driving member contact point to the second rotating shaft is greater than the distance between the driving part and the yoke contact point to the second rotating shaft, the swing amplitude of the moving contact piece is greater than the swing amplitude of the driving member, so that the moving contact piece can obtain greater displacement in the movement process, and the effective contact or separation of the moving contact piece between the static contact pieces is ensured.

[0008] As preferred, the number of the driving parts is two, the two driving parts are arranged on opposite sides of the driving body, and the two driving parts respectively protrude from the driving body.

[0009] In the above technical solution, the two driving parts make the connection between the yoke and the driving member more stable, and at the same time, the force of the yoke can be more stably transmitted to the driving body.

[0010] As preferred, the button comprises an outer button and an inner button, the inner button is rotationally connected to the pressing plate through the first rotating shaft, the outer button covers the outer side of the inner button and is detachably connected to the inner button, and the yoke is arranged on the inner button.

[0011] In the technical scheme, the inner key is provided with an additional support layer for the outer key, so that the structural strength of the outer key is improved, and the risk of stroke loss caused by deformation of the outer key is reduced, and the yoke is arranged on the inner key, so that the material wall thickness of the yoke part is thickened, the key surface is not caused to be shrunk, the strength of the yoke is enhanced, the driving reliability of the yoke is ensured, and the stability and reliability of the switch performance are improved.

[0012] Preferably, the outer key is detachably connected with the inner key outside through a plurality of buckles and a plurality of sleeves, and the plurality of buckles or the plurality of sleeves are distributed on four corners of the inner key.

[0013] In the technical scheme, when the user presses the edge of the outer key, the buckle position of the inner key is close to the edge of the outer key, so that the rotation of the inner key is easily triggered by pressing the outer key, and the outer key is connected with the inner key through the four buckles, so that the inner key can form a structural support for the outer key, the strength of the outer key is improved, and the stroke loss caused by deformation of the outer key is reduced, and the driving reliability is improved.

[0014] Preferably, the inner key is provided with a reinforcing structure for increasing the structural strength of the inner key.

[0015] In the technical scheme, the reinforcing structure is arranged to further improve the bearing capacity of the key to external force, and the reinforcing structure helps to disperse the pressing stress, prevents local damage, and prolongs the service life of the switch.

[0016] Preferably, the width of the clamping groove increases from the position close to the second rotating shaft to the position away from the second rotating shaft.

[0017] In the technical scheme, the increase of the width of the clamping groove makes the movable contact piece always contact with the clamping groove in the movement process, and is driven by the driving piece, so that the contact between the movable contact piece and the static contact piece is accurately controlled, and the stability and reliability of the switch performance are improved.

[0018] Preferably, the pressing plate is provided with a first mounting portion protruding to the side of the key, and the first rotating shaft is connected to the first mounting portion.

[0019] In the technical scheme, the first mounting portion is protrudingly arranged, so that the mounting position of the first rotating shaft is easily identified during installation, and the connection efficiency is improved.

[0020] Preferably, the contact piece assembly further comprises a plurality of terminals, and the static contact piece and the movable contact piece are electrically connected with corresponding terminals, respectively.

[0021] As preferred, the contact piece assembly further comprises a connecting piece connected with the movable contact piece, one end of the movable contact piece is pivoted to the connecting piece, the movable contact piece comprises a contact part for contacting with the static contact piece and a connecting part for connecting with the card slot, the distance between the connecting part and the pivoted position is less than the distance between the contact part and the pivoted position.

[0022] In the technical scheme, the distance between the contact position of the movable contact piece and the static contact piece and the pivoted position of the movable contact piece is kept, so that the spatial conflict between the static contact piece and the connecting piece is avoided.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] (1) not easy to press failure: the first rotation axis and the second rotation axis are arranged coaxially, L2 is less than L1 and L2 is less than L3, so that the smaller key flip angle can drive the larger driving part swing angle, the reliability of the driving part driving is guaranteed, the swing range of the movable contact piece is greater than the swing range of the driving part, so that the movable contact piece can obtain greater displacement in the movement process, the contact between the movable contact piece and the static contact piece is stable, so that the switch is not easy to press failure due to stroke loss;

[0025] (2) large structural strength: by setting the inner key, an additional support layer is provided for the outer key, the structural strength of the outer key is improved, the risk of stroke loss caused by the deformation of the outer key is reduced, and the strength of the switch is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the sectional view of the utility model;

[0027] Figure 2 is the structure explosion drawing of the utility model;

[0028] Figure 3 is the structure schematic view of the outer key of the utility model;

[0029] Figure 4 is the structure schematic view of the inner key of the utility model;

[0030] Figure 5 is the structure schematic view of the pressing plate of the utility model;

[0031] Figure 6 is the structure schematic view of the driving part of the utility model;

[0032] Figure 7 is the structure schematic view of the contact piece assembly of the utility model;

[0033] Figure 8is a structural schematic diagram of a combined state of the utility model.

[0034] Figure 9 is a principle schematic diagram of the utility model.

[0035] The figure mark is: 1, button; 11, outer button; 12, inner button; 121, reinforcing structure; 13, yoke; 14, first pivot; 2, pressing plate; 21, first mounting portion; 22, first mounting hole; 23, second mounting portion; 24, second mounting hole; 3, driving part; 31, driving body; 32, driving portion; 33, clamping groove; 34, second pivot; 4, contact piece assembly; 41, moving contact piece; 411, contact portion; 412, connecting portion; 42, static contact piece; 43, connecting piece; 44, terminal; 5, base; 6, buckle; 7, clamping sleeve. DETAILED DESCRIPTION

[0036] The utility model will be further described below in combination with examples. The device, connecting structure and method involved in the utility model are all the device, connecting structure and method known in the art if not specified.

[0037] Example 1

[0038] Referring to FIG. 1 to FIG. 9, the utility model provides a wall switch, including base 5, contact piece assembly 4, driving piece 3, pressing plate 2 and button 1, base 5 is provided with a plurality of screw holes, base 5 is connected with wall thread, base 5 is provided with and is equipped with several positioning clamping groove in the inside, contact piece assembly 4 is arranged in base 5, contact piece assembly 4 includes movable contact piece 41 and static contact piece 42, static contact piece 42 is equipped with two contact ends, movable contact piece 41 is movably arranged between the two ends of static contact piece 42 and can contact two ends respectively, pressing plate 2 is clamped with positioning clamping groove, is fixed in base 5, pressing plate 2 covers the outside of contact piece assembly 4, button 1 is equipped with first rotation axis 14, button 1 covers the outside of pressing plate 2 and is rotatably connected with pressing plate 2 through first rotation axis 14, driving piece 3 is equipped with second rotation axis 34, driving piece 3 is rotatably connected with pressing plate 2 through second rotation axis 34, first rotation axis 14 and second rotation axis 34 are eccentrically arranged, that is, first rotation axis 14 and second rotation axis 34 are not coaxial, the end of driving piece 3 away from second rotation axis 34 is equipped with clamping groove 33, and part of the structure of movable contact piece 41 extends into clamping groove 33, button 1 is fixed with fork 13, pressing plate 2 is equipped with through hole for fork 13 to pass through, fork 13 is connected with driving piece 3 through the through hole to drive driving piece 3 to swing relative to pressing plate 2, and driving piece 3 drives movable contact piece 41 to overturn;Driving piece 3 includes driving body 31 and driving part 32 in contact with fork 13, clamping groove 33 and second rotation axis 34 are all arranged on driving body 31, the distance between driving part 32 and first rotation axis 14 is L1, the distance between driving part 32 and second rotation axis 34 is L2, and L2 < L1.

[0039] In the wall switch, by eccentrically arranging the first rotation axis 14 and the second rotation axis 34, and by making the driving distance L1 longer than the transmission distance L2, a smaller overturning angle of the button 1 can drive a larger swinging angle of the driving piece 3, and the larger swinging angle of the driving piece 3 ensures the reliability of the driving of the driving piece 3, so that the switch is not easily pressed to fail due to stroke loss, and the manufacturing and assembly precision of the switch parts is reduced. At the same time, the larger overturning angle of the driving piece 3 also improves the contact pressure between the movable contact piece 41 and the static contact piece 42, so that the contact between the movable contact piece 41 and the static contact piece 42 is stable, and the stability and reliability of the switch performance are improved. The distance between the driving part 32 and the first rotation axis 14 is specifically the distance between the contact point of the driving part 32 and the fork 13 and the first rotation axis 14, and the distance between the driving part 32 and the second rotation axis 34 is specifically the distance between the contact point of the driving part 32 and the fork 13 and the second rotation axis 34.

[0040] The wall switch is assembled in the following manner: the contact piece assembly 4 is installed in the base 5, the driving member 3 is connected with the pressing plate 2 through the second rotating shaft 34, the pressing plate 2 is clamped with the positioning clamping groove in the base 5, covers the outer side of the contact piece assembly 4, the pressing piece is connected with the button 1 through the first rotating shaft 14, the button 1 covers the outer side of the pressing plate 2 and is clamped with the outer edge of the base 5.

[0041] The transmission mode of the wall switch is as follows: after the switch is pressed, the button 1 is flipped relative to the pressing plate 2 with the first rotating shaft 14 as the center, the pawl 13 arranged on the button 1 drives the driving member 3 to swing with the second rotating shaft 34 as the center through the driving part 32, the driving member 3 drives the moving contact piece 41 to flip between the two ends of the static contact piece 42, and the two ends of the static contact piece 42 are contacted or separated, so that the circuit is turned on or turned off.

[0042] Embodiment 2

[0043] Based on the embodiment 1, the utility model provides a wall switch, as shown in Figure 6 The number of the driving parts 32 is two, the two driving parts 32 are arranged on the opposite sides in the width direction of the driving body 31, and the two driving parts 32 respectively protrude from the driving body 31, in the switch combination state, the driving part 32 is inserted into the opening of the pawl 13 and abuts against the inner wall of the opening of the pawl 13, and one end of the driving body 31 towards the contact piece assembly is provided with a clamping groove 33, the width of the clamping groove 33 increases from the position close to the second rotating shaft 34 to the position away from the second rotating shaft 34, the distance between the clamping groove 33 and the second rotating shaft 34 is L3, and L3>L2. Figure 7 As shown in the figure, the contact piece assembly 4 further comprises a plurality of terminals 44, and the static contact piece 42 and the moving contact piece 41 are electrically connected with corresponding terminals 44 respectively. The contact piece assembly 4 further comprises a connecting piece 43 connected with the moving contact piece 41, one end of the moving contact piece 41 is pivotally connected to the connecting piece 43, and the moving contact piece 41 comprises a contact part 411 for contacting the static contact piece 42 and a connecting part 412 for connecting the clamping groove 33, and the distance between the connecting part 412 and the pivot connection position is less than the distance between the contact part 411 and the pivot connection position. Figure 3 And Figure 4 As shown in the figure, the button 1 comprises an outer button 11 and an inner button 12, the inner button 12 is rotatably connected with the pressing plate 2 through the first rotating shaft 14, the outer button 11 covers the outer side of the inner button 12 and is detachably connected with the inner button 12, the pawl 13 is arranged on the inner button 12, the inner button 12 is provided with a reinforcing structure 121 for increasing the structural strength of the inner button 12, the pressing plate 2 is provided with a first mounting part 21 protruding to one side of the button 1, the first mounting part 21 is provided with a first mounting hole 22, the first rotating shaft 14 is connected to the first mounting part 21 through the first mounting hole 22, and the pressing plate 2 is further provided with a second mounting part 23 protruding to one side of the base 5, the second mounting part 23 is provided with a second mounting hole 24, and the second rotating shaft 34 is connected to the second mounting part 23 through the second mounting hole 24. In the figure, the A direction is the width direction.

[0044] In the wall switch, the two driving parts 32 make the connection between the fork 13 and the driving member 3 more stable, and the force of the fork 13 can be transmitted to the driving body 31 more stably; the increasing width of the clamping groove 33 makes the moving contact 41 always in contact with the clamping groove 33 during movement, driven by the driving member 3, accurately controls the contact between the moving contact 41 and the static contact 42, and improves the stability and reliability of the switch performance; the distance between the clamping groove 33 and the second rotating shaft 34 is specifically the distance between the contact point of the moving contact 41 and the driving member 3 and the second rotating shaft 34, and when the driving member 3 swings, because the swing angle is fixed and the distance between the contact point of the moving contact 41 and the driving member 3 and the second rotating shaft 34 is greater than the distance between the contact point of the driving part 32 and the fork 13 and the second rotating shaft 34, the swing amplitude of the moving contact 41 is greater than the swing amplitude of the driving member 3, so that the moving contact 41 can obtain greater displacement during movement, and the effective contact or separation of the moving contact 41 between the static contacts 42 is ensured; the contact position of the moving contact 41 and the static contact 42 and the pivot position of the moving contact 41 maintain a certain distance, avoiding the spatial conflict of the static contact 42 and the connecting piece 43; by setting the inner key 12, an additional support layer is provided for the outer key 11, the structural strength of the outer key 11 is improved, the risk of stroke loss caused by deformation of the outer key 11 is reduced, and the fork 13 is arranged on the inner key 12, the wall thickness of part of the material of the fork 13 is thickened, the surface of the key 1 is not caused to shrink, the strength of the fork 13 is enhanced, the driving reliability of the fork 13 is ensured, and the stability and reliability of the switch performance are improved; by setting the reinforcing structure 121, the bearing capacity of the key 1 to external force is further improved, and the reinforcing structure 121 helps to disperse the pressing stress, prevents local damage, and prolongs the service life of the switch; the first mounting part 21 and the second mounting part 23 are protrudingly arranged, which facilitates identification of the mounting positions of the first rotating shaft 14 and the second rotating shaft 34 during installation, and improves the connection efficiency.

[0045] In the embodiment, as Figure 3 and Figure 4As shown, the inner button 12 is provided with one sleeve 7 at each of the four corners, and the outer button 11 is provided with a buckle 6 corresponding to the sleeve 7 at each of the four corners on the side facing the inner button 12, and the outer button 11 is connected with the inner button 12 through the buckles 6. It can be understood that the mounting parts of the buckles 6 and the sleeves 7 can be interchanged, and can be correspondingly arranged at other edge positions except the four corners. When the user presses the edge of the outer button 11, the buckles 6 of the inner button 12 are close to the edge of the outer button 11, so that the rotation of the inner button 12 is easily triggered by pressing the outer button 11, and the outer button 11 is connected with the inner button 12 through the four buckles 6, and the inner button 12 can also form a structural support to the outer button 11, thereby improving the strength of the outer button 11, and reducing the stroke loss caused by the deformation of the outer button 11, and improving the driving reliability. In another embodiment, the outer button 11 and the inner button 12 are connected by threads, so that the structure of the wall switch is simpler and easier to produce and process.

[0046] As Figure 9 shown, the working principle of the wall switch is as follows: according to the lever principle, since the driving distance L1 between the driving part 32 and the first rotating shaft 14 is longer, and the transmission distance L2 between the driving part 32 and the second rotating shaft 34 is shorter, when the button 1 is flipped by a small angle θ1 along the first rotating shaft, the driver 13 drives the driving part 3 to flip by a large angle θ2 along the second rotating shaft, thereby amplifying the swing angle of the driving part 3. Since the distance L3 between the clamping groove 33 and the second rotating shaft 34 is greater than the distance L2 between the driving part 32 and the second rotating shaft 34, when the driving part 3 is flipped by the angle θ2, the swing amplitude of the moving contact 41 is greater than the swing amplitude of the driving part 3, thereby amplifying the swing amplitude of the moving contact 41. The double amplification of the swing angle and the swing amplitude makes the moving contact 41 obtain sufficient displacement distance, so that even if there is stroke loss, the stable and reliable contact between the moving contact 41 and the static contact 42 can still be ensured.

[0047] The above is only a preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change and equivalent structure change of the above embodiment according to the technical essence of the present application still belong to the protection scope of the technical solution of the present application.

Claims

1. A wall switch comprising a base (5), a contact assembly (4), a drive element (3), a pressure plate (2), and a button (1), wherein the pressure plate (2) and the contact assembly (4) are mounted within the base (5), and the contact assembly (4) comprises a moving contact (41) and a stationary contact (42), characterized in that, The key (1) covers the pressing plate (2) outside and is rotatably connected with the pressing plate (2) through the first rotating shaft (14), the driving member (3) is rotatably connected with the pressing plate (2) through the second rotating shaft (34), the first rotating shaft (14) and the second rotating shaft (34) are eccentrically arranged, one end of the driving member (3) away from the second rotating shaft (34) is provided with a clamping groove (33), part of the structure of the movable contact piece (41) extends into the clamping groove (33), the key (1) is fixed with a yoke (13), the yoke (13) penetrates the pressing plate (2) and drives the driving member (3) to swing relative to the pressing plate (2), and the driving member (3) drives the movable contact piece (41) to overturn. The driving member (3) comprises a driving body (31) and a driving part (32) in contact with the yoke (13), the clamping groove (33) and the second rotating shaft (34) are arranged on the driving body (31), the distance between the driving part (32) and the first rotating shaft (14) is L1, and the distance between the driving part (32) and the second rotating shaft (34) is L2, and L2 is less than L1.

2. A wall switch according to claim 1, wherein, The distance between the clamping groove (33) and the second rotating shaft (34) is L3, and L2 is less than L3.

3. A wall switch according to claim 1, wherein, The number of the driving part (32) is two, the two driving parts (32) are arranged on opposite sides of the driving body (31), and the two driving parts (32) protrude from the driving body (31).

4. A wall switch according to claim 1, wherein, The key (1) comprises an outer key (11) and an inner key (12), the inner key (12) is rotatably connected with the pressing plate (2) through the first rotating shaft (14), the outer key (11) covers the inner key (12) outside and is detachably connected with the inner key (12), and the yoke (13) is arranged on the inner key (12).

5. A wall switch according to claim 4, wherein, The outer key (11) and the inner key (12) are detachably connected through a plurality of buckles (6) and a plurality of clamping sleeves (7), and the plurality of buckles (6) or the plurality of clamping sleeves (7) are distributed on four corners of the inner key (12).

6. A wall switch according to claim 4, wherein, The inner key (12) is provided with a reinforcing structure (121) for increasing the structural strength of the inner key (12).

7. A wall switch according to any one of claims 1 to 6, characterised in that, The width of the clamping groove (33) increases from the position close to the second rotating shaft (34) to the position away from the second rotating shaft (34).

8. A wall switch according to any one of claims 1 to 6, characterised in that, The pressing plate (2) is provided with a first mounting portion (21) protruding to one side of the key (1), and the first rotating shaft (14) is connected to the first mounting portion (21).

9. A wall switch according to any one of claims 1 to 6, characterised in that, The contact piece assembly (4) further comprises a plurality of terminals (44), and the static contact piece (42) and the movable contact piece (41) are electrically connected with corresponding terminals (44) respectively.

10. A wall switch according to any one of claims 1 to 6, characterised in that, The contact piece assembly (4) further comprises a connecting piece (43) connected with the movable contact piece (41), one end of the movable contact piece (41) is pivotally connected to the connecting piece (43), the movable contact piece (41) comprises a contact part (411) for contacting the static contact piece (42) and a connecting part (412) for connecting with the clamping groove (33), and the distance between the connecting part (412) and the pivot connection position is less than the distance between the contact part (411) and the pivot connection position.

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