Small-angle operation switch structure

Abstract

The utility model provides a small-angle operation switch structure. The small-angle operation switch structure comprises a fixed support, a button transmission member, a contact driving member, a moving contact and a static contact. The button transmission part is rotationally connected to the fixing support. The contact driving part is rotationally connected to the fixing support, a rotating basic shaft of the contact driving part is located on the rear side of a rotating basic shaft of the button transmission part and is approximately parallel to the rotating basic shaft, and the front end of the contact driving part is movably connected to the tail end of the button transmission part so that the contact driving part can rotate relative to the button transmission part while rotating along with the button transmission part. The moving contact is movably connected to the tail end of the contact driving piece. When the contact driving piece rotates, the moving contact is driven to swing so that the moving contact can abut against or be separated from the static contact, and the swing angle of the moving contact is larger than the rotation angle of the button transmission piece.

Description

Technical Field

[0001] The utility model relates to the technical field of wall switches, and in particular to a small-angle operating switch structure. Background Art

[0002] A switch is a commonly used device for controlling the on and off of a circuit. A button is provided on the outer surface of the switch. The user changes the angle of the button by pressing the button, thereby changing the position of the internal components of the switch. Specifically, a contact driving member is provided inside the switch. When the angle of the button changes, the angle of the contact driving member also changes, thereby realizing the on and off of the circuit.

[0003] When designing a wall switch, the electrical clearance of the switch contacts needs to meet the specific distance specified by the standard, that is, the rotation angle of the contact driver must be large to make the electrical clearance meet the requirements. In existing switches, the contact driver and the button in the switch generally rotate synchronously. In order for the contact driver to have a sufficiently large rotation angle, the rotation angle of the button must also be large, so the raised part of the button needs to be higher than the wall. To solve this problem, small-angle switches are currently available on the market. This type of small-angle switch achieves small-angle operation by lengthening the rod length of the contact driver. However, the lengthening of the rod length will make the overall thickness of the switch thicker and affect installation; in addition, existing small-angle switches also have problems such as small-angle operation requiring multiple parts to cooperate in transmission, many parts, complex assembly process, and high cost. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a small-angle operating switch structure.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a small-angle operating switch structure, which includes a fixed bracket, a button transmission member, a contact driving member, a moving contact and a static contact. The button transmission member is rotatably connected to the fixed bracket. The contact driving member is rotatably connected to the fixed bracket and the rotation base axis of the contact driving member is located at the rear side of the rotation base axis of the button transmission member and the two are roughly parallel. The front end of the contact driving member is movably connected to the end of the button transmission member so that the contact driving member rotates relative to the button transmission member while following the rotation of the button transmission member. The moving contact is movably connected to the end of the contact driving member. When the contact driving member rotates, it drives the moving contact to swing so that it abuts or separates from the static contact and the swing angle of the moving contact is greater than the rotation angle of the button transmission member.

[0006] According to one embodiment of the utility model, a first transmission groove is provided at the end of the button transmission member, and a driving member protrusion is provided at the front end of the contact driving member, which is embedded in the first transmission groove and swings in the first transmission groove; the button transmission member rotates and drives the contact driving member to rotate through the first transmission groove and the driving member protrusion at its end.

[0007] According to an embodiment of the present invention, the driving member boss includes a boss body and two wedge-shaped blocks formed on both sides of the boss body and abutting against the inner wall of the first transmission groove.

[0008] According to one embodiment of the utility model, the driving member protrusion also includes two blocking arms located at the rear side of the two wedge blocks and extending to both sides of the driving member body. When the wedge block on one side abuts against the inner wall of the first transmission groove, the blocking arm on the other side abuts against the fixed bracket.

[0009] According to one embodiment of the utility model, a second transmission groove is formed at the end of the contact driving member, and the contact connecting portion on the moving contact extends into and is movably connected to the second transmission groove; when the contact driving member rotates, the inner wall of the second transmission groove pushes the contact connecting portion to make the moving contact swing at an angle to abut or separate from the static contact.

[0010] According to an embodiment of the present invention, the button transmission member is accommodated in a containing space surrounded by the front end of the fixing bracket. An assembly hole is formed on the fixing bracket, and the front end of the contact driving member is movably connected to the end of the button transmission member through the assembly hole.

[0011] According to an embodiment of the utility model, two rear base shaft mounting holes that are relatively distributed are formed in the hole wall of the assembly hole, and the rotating base shaft of the contact driving member is rotatably connected to the two rear base shaft mounting holes.

[0012] According to an embodiment of the utility model, the front end of the fixed bracket is formed with two mounting plates extending forward and two front base shaft mounting holes are correspondingly formed on the two mounting plates, and the rotating base shaft of the button transmission member is rotatably connected to the two front base shaft mounting holes.

[0013] According to an embodiment of the present invention, the fixing bracket further comprises two limiting plates, which are respectively located on the outer sides of the two mounting plates and each limiting plate is provided with a limiting groove corresponding to the front base shaft mounting hole.

[0014] According to an embodiment of the utility model, the small-angle operating switch structure includes two stationary contacts, and the moving contact is disconnected from one of the stationary contacts and abuts against the other stationary contact when swinging.

[0015] In summary, in the small-angle operation switch structure provided by the present embodiment, the contact driving member is movably connected to the end of the button transmission member, and the button transmission member rotates while driving the contact driving member to rotate synchronously around the substantially parallel rotation base axis. The connection position of the end enables the contact driving member to have a larger range of motion than the button transmission member when following the rotation of the button transmission member; and the movable connection structure enables the contact driving member to rotate relative to the button transmission member while following the rotation of the button transmission member, thereby having a larger rotation angle. Further, the rotation base axis of the contact driving member is arranged at the rear side of the rotation base axis of the button transmission member, and the base axis positions staggered front and back multiply the rotation angle of the front end of the contact driving member relative to the end of the button transmission member, thereby having an extremely high transmission conversion efficiency. The large-angle rotation of the contact driving member enables it to drive the moving contact to achieve a large-angle swing. The small-angle operation of the button of the small-angle operation switch structure provided by the present embodiment realizes a large-angle swing of the moving contact after the transmission of the button transmission member and the contact driving member, thereby meeting the electrical clearance requirements specified in the standard.

[0016] In addition, the small-angle operating switch structure provided in this embodiment can achieve angle conversion by using only one button transmission component and one moving contact driving component, and has the advantages of simple structure, small number of parts, high assembly efficiency and low cost.

[0017] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is an exploded schematic diagram of a small-angle operating switch structure provided by an embodiment of the utility model.

[0019] Figure 2 Shown Figure 1 Schematic diagram of the working principle of the small-angle operating switch structure shown.

[0020] Figure 3 Shown Figure 1 Schematic cross-sectional view of .

[0021] Figure 4 Shown Figure 1 The diagram of the assembly of the button transmission member, the contact driving member, the moving contact and the stationary contact in the small-angle operating switch structure shown.

[0022] Figure 5 Shown Figure 1 Schematic diagram of the contact status of the small-angle operating switch structure shown.

[0023] Figure 6 Shown Figure 1Another contact state schematic diagram of the small-angle operating switch structure is shown. DETAILED DESCRIPTION

[0024] In the description of the present invention, "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figures 1 to 5 As shown, the small-angle operating switch structure provided in this embodiment includes a fixed bracket 2, a button transmission member 3, a contact driving member 4, a moving contact 5 and a static contact. The button transmission member 3 is rotatably connected to the fixed bracket 2. The contact driving member 4 is rotatably connected to the fixed bracket 2 and the rotation base axis of the contact driving member 4 is located at the rear side of the rotation base axis of the button transmission member 3 and the two are roughly parallel. The front end of the contact driving member 4 is movably connected to the end of the button transmission member 3, and rotates relative to the button transmission member 3 while following the rotation of the button transmission member 3. The moving contact 5 is movably connected to the end of the contact driving member 4. When the contact driving member 4 rotates, it drives the moving contact 5 to swing so that it abuts or separates from the static contact, and the swing angle of the moving contact 5 is greater than the rotation angle of the button transmission member 3.

[0027] In this embodiment, the front end refers to the end where the external force acts on the button transmission member; for example, in this embodiment, the front end refers to the end where the button 1 is located, and the end refers to the end away from the button 1, that is, the end close to the static contact.

[0028] In this embodiment, the fixed bracket 2 is fixed in the wall where the switch needs to be installed, and the button transmission member 3 is installed on the fixed bracket 2 and is rotatably connected to the fixed bracket 2, that is, the button transmission member 3 rotates around the corresponding rotation base axis. For the convenience of description, the rotation base axis of the button transmission member 3 is called the first transmission shaft 31. In this embodiment, the front end side wall of the button transmission member 3 is integrally formed with a raised first transmission shaft 31, that is, the first transmission shaft 31 and the button transmission member 3 are integrally formed. However, the present utility model does not make any limitation to this. In other embodiments, the first transmission shaft may also be a split structure with the button transmission member. For example Figure 1 As shown, the front end of the fixed bracket 2 is formed with two mounting plates 21 extending forward, and two front base shaft mounting holes 210 are correspondingly formed on the two mounting plates 21, and the first transmission shaft 31 is rotatably connected to the two front base shaft mounting holes 210 so that the button transmission member 3 can rotate relative to the fixed bracket 2 around the axis of the first transmission shaft 31 under the action of external force. Further, the fixed bracket 2 also includes two limiting plates 22, which are respectively located on the outer sides of the two mounting plates 21 and each limiting plate 22 is provided with a limiting groove 220 corresponding to the front base shaft mounting hole 211. The limiting groove 220 limits the rotation trajectory of the first transmission shaft 31 so that it is stably connected to the fixed bracket 2.

[0029] In this embodiment, the button transmission member 3 is accommodated in the accommodating space 201 enclosed by the front end of the fixed bracket 1, and an assembly hole 202 is formed on the fixed bracket 2. The front end of the contact driving member 4 is movably connected to the end of the button transmission member 3 through the assembly hole 202. Two relatively distributed rear base shaft mounting holes 203 are formed in the hole wall of the assembly hole 202, and the rotating base shaft of the contact driving member 4 is rotatably connected to the two rear base shaft mounting holes 203. This arrangement enables the rotating base shaft of the contact driving member 4 to be located on the rear side of the rotating base shaft of the button transmission member 3. However, the present utility model does not impose any limitation on this. For the convenience of description, the rotating base shaft of the contact driving member 4 is referred to as the second transmission shaft 41. As Figure 1 As shown, a protruding second transmission shaft 41 is formed on the front part of the side wall of the contact driving member 4, and the second transmission shaft 41 is installed in the two rear base shaft installation holes 203. Although this embodiment is described by taking the second transmission shaft 41 and the contact driving member 4 as an example of being integrally formed, the utility model is not limited to this. In other embodiments, the second transmission shaft and the contact driving member may also be in a split structure.

[0030] In this embodiment, the first transmission shaft and the second transmission shaft are located at different positions but are substantially parallel. It should be noted that being substantially parallel does not limit the angle between the two transmission shafts to be 0 degrees. When the angle between the two transmission shafts is less than a certain preset angle, the two transmission shafts can also be considered to be parallel. For example, when the angle between the axis of the first transmission shaft and the axis of the second transmission shaft is less than or equal to 10 degrees, the two transmission shafts can also be considered to be substantially parallel.

[0031] In this embodiment, the small-angle operating switch structure also includes a button 1, which is arranged at the front end of the button transmission member 3 and fixedly connected to the button transmission member 3, that is, the button 1 and the button transmission member 2 can rotate synchronously around the first transmission shaft 31. For example, when a user presses the button 1, the button 1 and the button transmission member 1 can rotate synchronously around the first transmission shaft. However, the utility model does not impose any limitation on this. In other embodiments, the small-angle operating switch structure may not need to be provided with a button, and the user can directly press the button transmission member 3 to make it rotate around the first transmission shaft 31 and drive the moving contact 5 to swing through the contact driving member 4, thereby realizing the contact or separation of the moving contact 5 and the static contact.

[0032] like Figure 1 , Figure 2 as well as Figure 3 As shown, the end of the button transmission member 3 is provided with a first transmission groove 30, and the front end of the contact driving member 4 is provided with a driving member protrusion 42 embedded in the first transmission groove 30 and swinging in the first transmission groove 30; the button driving member 3 rotates and drives the contact driving member 4 to rotate through the first transmission groove 30 and the driving member protrusion 42 at its end. Correspondingly, the end of the contact driving member 4 is formed with a second transmission groove 40, and the contact connecting portion 51 on the moving contact 5 extends into the second transmission groove 40; when the contact driving member 4 rotates, the inner wall of the second transmission groove 40 pushes the contact connecting portion 51 to make the moving contact 5 swing at an angle, and then abut against or separate from the static contact.

[0033] Figure 2 The schematic diagram of the working principle of the switch structure for small angle operation provided by this embodiment is shown below. Figure 2 Its working principle is explained in detail.

[0034] Figure 2 The initial positions of the button transmission member 3 and the contact driving member 4 are indicated by solid lines, while the activity trajectories of the button transmission member 3 and the contact driving member 4 rotating under the action of external force are indicated by dotted lines. The first transmission shaft 31 is located at A, and the second transmission shaft 41 is located at B. The first transmission shaft 31 and the second transmission shaft 41 are both perpendicular to Figure 2 The paper where it is located; the distance C represents the movable distance of the contact driving member 4 when the button transmission member 3 rotates, and D represents the movable distance of the moving contact connecting part 51 when the contact driving member 4 rotates; the button transmission member 3 swings around the axis of the first transmission shaft 31 and the movement trajectory forms an angle α, and the contact driving member 4 swings around the axis of the second transmission shaft 41 and the movement trajectory forms an angle β.

[0035] Specifically, when the button transmission member 3 rotates around the first transmission shaft 31 at an angle α due to an external driving force, the side wall of the first transmission groove 30 located at the end thereof will abut against the driving member lug 42 on the contact driving member 4 and transmit to it a torque capable of driving the contact driving member 4 to rotate so that the contact driving member 4 rotates around the axis of the second transmission shaft 41. Since the driving member lug 42 is movably embedded in the first transmission groove 30 and the second transmission shaft 41 is located at the rear side of the first transmission shaft 31, the front and rear staggered positions of the transmission shafts enable the driving member lug 42 to rotate relative to the button transmission member 3 in the rotation space provided by the first transmission groove 30 (the angle between the button transmission member 3 and the contact driving member 4 will also change), thereby enabling the contact driving member 4 to follow the button transmission member 3 to rotate at an angle α while also superimposing a relative rotation angle, thereby multiplying the rotation angle of the moving contact driving member 4 and causing it to rotate at a large angle β, that is, realizing the conversion of the button operation at a small angle α to the contact driving member 4 at a large angle β. The large-angle rotation of the contact driving member 4 enables it to drive the moving contact 5 to swing within a large-angle range, thereby increasing the moving distance of the moving contact 5 .

[0036] In this embodiment, the first transmission shaft 31 is located at the front end of the side wall of the button transmission member 2 and the second transmission shaft 41 is also located at the front end of the side wall of the contact driving member 41. This arrangement makes it possible for the small distance movement of the front end to be magnified and the rear end to have a larger movement distance when the contact driving member 4 and the moving contact 5 rotate along the axis. Therefore, when the contact driving member 4 and the moving contact 5 follow the button transmission member 3 to rotate, the moving contact 5 at the end will have the largest movement distance. On this basis, the conversion of the moving contact driving member 4 from a small angle α to a large angle β greatly increases the range of movement of the moving contact 5, thereby realizing the small angle operation of the switch.

[0037] like Figure 2 As shown, the button transmission member 3 drives the driving member protruding handle 42 to move through the first transmission groove 30 at the end, and the moving contact driving member 4 rotates around the first transmission shaft 41 at an angle β under the drive of the button transmission member 3, and the second transmission groove 40 at the end thereof pushes the moving contact connection 51 to move and the moving distance is D. Obviously, the moving distance C is much smaller than the moving distance D, so the external small angle (α) operation of the switch is realized. The small angle operation switch provided in this embodiment can realize the internal large angle (β) swing through the simple cooperation of the button transmission member 3 and the contact driving member 4, thereby making the moving contact 5 move along the moving contact swing fulcrum 510 The required distance of the electrical gap.

[0038] In this embodiment, the small angle operating switch includes two stationary contacts, namely, stationary contact 1 61 and stationary contact 2 62. The other end of the moving contact 5 opposite to the moving contact connection 51 forms a contact swing fulcrum 510. Two symmetrical moving contacts 52 and 53 are formed on one side of the moving contact connection 51. Figure 5 As shown in FIG. 1 , when the moving contact 5 swings to the first position, the moving contact 1 52 abuts against the static contact 611 on the static contact 1 61, and the moving contact 2 53 is separated from the static contact 621 on the static contact 2 62; and when the moving contact 5 swings to the second position, the moving contact 1 52 is separated from the static contact 611 on the static contact 1 61, and the moving contact 2 53 abuts against the static contact 621 on the static contact 2 62, as shown in FIG. Figure 6 However, the present invention does not impose any limitation on this. In other embodiments, the small-angle operating switch may also include only one stationary contact.

[0039] In this embodiment, the driver lug 42 includes a lug body 421 and two wedge blocks 422 formed on both sides of the lug body 421 and abutting against the inner wall of the first transmission slot 30. When rotating, the end of the side wall of the first transmission slot 30 quickly abuts and pushes the wedge block 422 to move to quickly respond to the rotation of the button transmission member 2, thereby achieving a quick response of the switch. Further, the driver lug 42 also includes two blocking arms 423 located at the rear side of the two wedge blocks 422. When the wedge block 422 on one side abuts against the inner wall of the first transmission slot 30, the blocking arm 423 on the other side abuts against the fixed bracket 2 to achieve a stable connection of the contact driver 4 when rotating.

[0040] In this embodiment, if Figure 3 As shown, the small-angle operating switch also includes a cover 7 and a mounting bracket 8. The cover 7 covers the front end surface of the fixing bracket 2, and the mounting bracket 8 is arranged on both sides of the fixing bracket 2.

[0041] In summary, in the small-angle operation switch structure provided by the present embodiment, the contact driving member is movably connected to the end of the button transmission member, and the button transmission member rotates while driving the contact driving member to rotate synchronously around the substantially parallel rotation base axis. The connection position of the end enables the contact driving member to have a larger range of motion than the button transmission member when following the rotation of the button transmission member; and the movable connection structure enables the contact driving member to rotate relative to the button transmission member while following the rotation of the button transmission member, thereby having a larger rotation angle. Further, the rotation base axis of the contact driving member is arranged at the rear side of the rotation base axis of the button transmission member, and the base axis positions staggered front and back multiply the rotation angle of the front end of the contact driving member relative to the end of the button transmission member, thereby having an extremely high transmission conversion efficiency. The large-angle rotation of the contact driving member enables it to drive the moving contact to achieve a large-angle swing. The small-angle operation of the button of the small-angle operation switch structure provided by the present embodiment realizes a large-angle swing of the moving contact after the transmission of the button transmission member and the contact driving member, thereby meeting the electrical clearance requirements specified in the standard.

[0042] In addition, the small-angle operating switch structure provided in this embodiment can achieve angle conversion by using only one button transmission component and one moving contact driving component, and has the advantages of simple structure, small number of parts, high assembly efficiency and low cost.

[0043] Although the present invention has been disclosed as above by the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make slight changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope of protection required by the claims.

Claims

1. A small-angle operating switch structure, characterized in that: include: Fixed bracket; A button transmission member, rotatably connected to the fixed bracket; A contact driving member is rotatably connected to the fixed bracket, and a rotation base axis of the contact driving member is located at the rear side of the rotation base axis of the button transmission member and the two are substantially parallel, and a front end of the contact driving member is movably connected to the end of the button transmission member so that the contact driving member rotates with the button transmission member and rotates relative to the button transmission member; The moving contact is movably connected to the end of the contact driving member. When the contact driving member rotates, the moving contact is driven to swing so as to abut against or separate from the static contact, and the swing angle of the moving contact is greater than the rotation angle of the button transmission member.

2. The small-angle operating switch structure according to claim 1, characterized in that: A first transmission groove is provided at the end of the button transmission member, and a driving member protrusion is provided at the front end of the contact driving member, which is embedded in the first transmission groove and swings in the first transmission groove; the button transmission member rotates and drives the contact driving member to rotate through the first transmission groove and the driving member protrusion at its end.

3. The small-angle operating switch structure according to claim 2, characterized in that: The driving member boss comprises a boss body and two wedge-shaped blocks formed on both sides of the boss body and abutting against the inner wall of the first transmission groove.

4. The small-angle operating switch structure according to claim 2, characterized in that: The driving member protruding handle also includes two blocking arms located at the rear side of the two wedge blocks and extending to both sides of the driving member body. When the wedge block on one side abuts against the inner wall of the first transmission groove, the blocking arm on the other side abuts against the fixed bracket.

5. The small-angle operating switch structure according to claim 1, characterized in that: A second transmission groove is formed at the end of the contact driving member, and the contact connecting part on the moving contact extends into and is movably connected to the second transmission groove; when the contact driving member rotates, the inner wall of the second transmission groove pushes the contact connecting part to make the moving contact swing at an angle to abut or separate from the static contact.

6. The small-angle operating switch structure according to claim 1, characterized in that: The button transmission member is accommodated in a containing space surrounded by the front end of the fixing bracket. An assembly hole is formed on the fixing bracket. The front end of the contact driving member is movably connected to the end of the button transmission member through the assembly hole.

7. The small-angle operating switch structure according to claim 6, characterized in that: Two rear base shaft mounting holes which are distributed relatively are formed in the hole wall of the assembly hole, and the rotating base shaft of the contact driving member is rotatably connected to the two rear base shaft mounting holes.

8. The small-angle operating switch structure according to claim 1 or 7, characterized in that: The front end of the fixing bracket is formed with two mounting plates extending forward, and two front base shaft mounting holes are correspondingly formed on the two mounting plates, and the rotating base shaft of the button transmission member is rotatably connected to the two front base shaft mounting holes.

9. The small-angle operating switch structure according to claim 8, characterized in that: The fixing bracket also includes two limiting plates, which are respectively located at the outer sides of the two mounting plates and each limiting plate is provided with a limiting groove corresponding to the front base shaft mounting hole.

10. The small-angle operating switch structure according to claim 1, characterized in that: The small-angle operating switch structure comprises two stationary contacts, and the moving contact is disconnected from one of the stationary contacts and abuts against the other stationary contact when swinging.

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