Sealed knob switch

Abstract

The utility model discloses a sealed knob switch, which relates to the field of electrical equipment and comprises a shell, a rotating rod, a knob, a rotating block, a base, a second binding post, a contact piece, a first sealing ring, a second sealing ring and a plurality of first binding posts. When the rotary knob is rotated, the rotary knob drives the rotary block to rotate through the rotary rod, the rotary block drives the contact piece to rotate, one end of the contact piece abuts against the second binding post all the time, the other end of the contact piece makes contact with the multiple first binding posts in sequence, and therefore switching of multiple kinds of connection is achieved. In the long-term use process, the first sealing ring plays a dustproof and waterproof role, and the second sealing ring performs secondary protection, thereby improving the sealing performance of the knob switch, prolonging the service life of the knob switch, and preventing water, dust and other impurities from entering the knob switch, causing faults, and further preventing the use effect from being affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical equipment, in particular to a sealed knob switch. BACKGROUND

[0002] The knob switch is mainly composed of a rotating part and a trigger part. When the knob is rotated, the internal mechanism adjusts the position of the trigger, thereby changing the state of the switch. The knob switch has a very wide range of applications and is easy to operate, not only can control the light, operate the intelligent device, but also can control the forward and reverse rotation of the motor.

[0003] The current action mode of the knob switch is to change the position of the contact point by rotating the knob, thereby realizing the control of the circuit. However, the existing knob switch has poor sealing, and water and dust can easily enter after long-term use, resulting in a shortened service life of the knob switch. CONTENT OF THE INVENTION

[0004] In order to improve the sealing of the knob switch, the present application provides a sealed knob switch.

[0005] The sealed knob switch provided by the present application adopts the following technical scheme:

[0006] A sealed knob switch, comprising a shell, a rotating rod, a knob, a rotating block, a base, a second terminal post, a contact sheet, a first sealing ring, a second sealing ring and a plurality of first terminal posts, the rotating rod is rotationally arranged in the shell, the knob is rotationally arranged on the shell and connected with the top end of the rotating rod, the base is arranged at the bottom end of the shell, the rotating block is rotationally arranged on the base, the bottom end of the rotating rod is connected with the rotating block, a recess is formed in the rotating block, the contact sheet is arranged in the recess of the rotating block, a plurality of first terminal posts are arranged in the base in a spaced and surrounding manner, the second terminal post is fixedly arranged in the base, the bottom end of the contact sheet extends out of the recess and abuts against the first terminal post and the second terminal post respectively, the first sealing ring is arranged in the shell, the top end of the first sealing ring is located between the shell and the rotating rod, the second sealing ring is arranged in the shell, the bottom end of the first sealing ring is located between the second sealing ring and the rotating block, the top end of the second sealing ring is located between the first sealing ring and the shell, and the bottom end of the second sealing ring is located between the base and the shell.

[0007] By adopting the technical scheme, when the knob is rotated, the knob drives the rotating block to rotate through the rotating rod, the rotating block drives the contact sheet to rotate, one end of the contact sheet always abuts against the second terminal post, and the other end of the contact sheet sequentially contacts the plurality of first terminal posts, so that the switching of a plurality of connections is realized. In the long-term use process, the first sealing ring plays a role in dustproof and waterproof, the second sealing ring performs secondary protection, the sealing property of the knob switch is improved, the service life of the knob switch is prolonged, water, dust and other impurities in the knob switch are avoided, and the use effect is affected.

[0008] Preferably, a sealing ring groove is formed in the bottom end of the knob, and the top end of the first sealing ring is inserted into the sealing ring groove.

[0009] By adopting the technical scheme, the top of the first sealing ring is clamped by the sealing ring groove between the shell and the knob, so that the sealing effect of the first sealing ring is better.

[0010] Preferably, an extrusion ring groove is formed in the top end of the base, and the bottom end of the second sealing ring is inserted into the extrusion ring groove.

[0011] By adopting the technical scheme, the bottom of the second sealing ring is clamped by the extrusion ring groove between the shell and the base, so that the sealing effect of the second sealing ring is better.

[0012] Preferably, mounting holes are formed in the bottom end of the rotating rod and the middle part of the rotating block, elastic members are arranged in the mounting holes, the two ends of the elastic members are provided with clamping beads, a plurality of limiting columns are arranged on the inner side wall of the base in a spaced manner, a limiting groove is formed between every two adjacent limiting columns, and the clamping beads are abutted against the limiting groove by the elastic members.

[0013] By adopting the technical scheme, when the knob is rotated, the rotating block drives the clamping beads to move in the base and extrude the elastic members, and a resistance is generated. When the clamping beads pass the limiting column, the elastic members are reset, the clamping beads enter the limiting groove due to the elastic force of the elastic members, at this time, the limiting groove limits the clamping beads, and a sound is generated, so that the operator can know whether the switch is switched.

[0014] Preferably, an indicating arrow is arranged on the top wall of the knob, a plurality of indicating digits are arranged on the top wall of the shell, and the plurality of indicating digits and the plurality of first terminal posts one-to-one correspond.

[0015] By adopting the technical scheme, when the knob is rotated, the indicating arrow points to the indicating digit, one circuit corresponding to the first terminal post is connected, and the circuits corresponding to the remaining terminal posts are disconnected, the indicating digits and the first terminal posts one-to-one correspond, the operator can control the knob to point to the terminal post to be connected, and the circuit connection error is avoided.

[0016] Preferably, the top end of the rotating rod is formed with a special-shaped block, and the bottom end of the knob is provided with a special-shaped hole, and the special-shaped block is inserted into the special-shaped hole.

[0017] By adopting the above technical scheme, the special-shaped block is inserted into the knob through the special-shaped hole, the knob drives the special-shaped block to rotate, and the knob is convenient to rotate towards the direction of the indicating digit.

[0018] Preferably, the outer side wall of the base is provided with a clamping block, and the bottom end of the outer side wall of the shell is provided with a clamping groove, and the clamping block is inserted into the clamping groove.

[0019] By adopting the above technical scheme, when the knob is rotated, the clamping block is inserted into the clamping groove, so that the shell does not rotate with the rotation of the knob, and it is convenient to control the indication arrow, the indicating digit and the plurality of first connecting posts to be one-to-one corresponding, and the line is effectively connected.

[0020] Preferably, the outer side wall of the knob is provided with an anti-skid pattern.

[0021] By adopting the above technical scheme, the anti-skid pattern increases the friction between the palm of the operator and the knob, and it is convenient for the operator to rotate the knob, and the anti-skid effect is achieved.

[0022] Preferably, the middle part of the top wall of the base is provided with a guide column, and the middle part of the bottom wall of the rotating block is provided with a guide hole, and the guide column is inserted into the guide hole.

[0023] By adopting the above technical scheme, when the knob is rotated, the rotating rod drives the rotating block to move, and the guide column is inserted into the guide hole to guide the movement of the rotating block.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. By rotating the knob, the knob drives the rotating block to rotate through the rotating rod, the rotating block drives the contact sheet to rotate, one end of the contact sheet always abuts against the second connecting post, and the other end of the contact sheet sequentially contacts the plurality of first connecting posts, so as to realize the switching of multiple connections. In the process of long-term use, the first sealing ring plays a role in dustproof and waterproof, the second sealing ring is used for secondary protection, the sealing property of the knob switch is improved, the service life is prolonged, water, dust and other impurities in the knob switch are avoided, and the use effect is affected.

[0026] 2. The top of the first sealing ring is clamped by the shell and the knob through the sealing ring groove, so that the sealing effect of the first sealing ring is better.

[0027] 3. The bottom of the second sealing ring is clamped by the shell and the base through the extrusion ring groove, so that the sealing effect of the second sealing ring is better. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The whole structure schematic diagram of the sealed knob switch of the application;

[0029] Figure 2 The cross-sectional view of the sealed knob switch of the application, for highlighting the contact sheet;

[0030] Figure 3 The cross-sectional view of the sealed knob switch of the application, for highlighting the elastic member;

[0031] Figure 4 The forward explosion structure schematic diagram of the sealed knob switch of the application;

[0032] Figure 5 The reverse explosion structure schematic diagram of the sealed knob switch of the application.

[0033] The reference signs: 1, the shell; 2, the rotating rod; 3, the knob; 4, the rotating block; 5, the base; 6, the first wiring post; 7, the second wiring post; 8, the contact sheet; 9, the first sealing ring; 10, the second sealing ring; 11, the recess; 12, the sealing ring groove; 13, the extrusion ring groove; 14, the mounting hole; 15, the elastic member; 16, the clamping bead; 17, the limiting column; 18, the limiting groove; 19, the indication arrow; 20, the indication number; 21, the special-shaped block; 22, the special-shaped hole; 23, the clamping block; 24, the clamping groove; 25, the guide column; 26, the guide hole. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings Figures 1-5 The application is further described in detail.

[0035] The embodiment of the application discloses a sealed knob switch.

[0036] Referring to Figure 1 , a sealed knob switch comprises a shell 1 and a knob 3, the knob 3 is located at the top of the shell 1, and anti-skid lines are formed on the outer side wall of the knob 3, the anti-skid lines are arranged in a wave shape, so that the friction between the fingers of an operator and the knob 3 is increased, and the knob 3 is facilitated to rotate.

[0037] Referring to Figure 3 , Figure 4 and Figure 5 , the bottom of the shell 1 is fixedly installed with a base 5, and the top of the base 5 is installed with a rotating block 4. The middle of the top wall of the base 5 is fixedly installed with a guide column 25, the middle of the bottom wall of the rotating block 4 is provided with a guide hole 26, the guide column 25 is inserted into the guide hole 26, and the guide column 25 cooperates with the guide hole 26 to guide the rotation of the rotating block 4.

[0038] The top middle of the rotating block 4 is provided with an opening, the bottom wall of the rotating block 4 abuts against the top wall of the base 5, the top middle of the knob 3 is provided with the rotating rod 2, the top end of the rotating rod 2 is inserted into the inner side wall of the bottom of the knob 3, and the bottom end of the rotating rod 2 is installed at the top middle opening of the rotating block 4.

[0039] With reference to Figure 2 A groove 11 is formed in the bottom wall of the rotating block 4, the rotating block 4 is installed in the groove 11 and provided with the contact sheet 8, and the top end of the contact sheet 8 abuts against the inner side wall of the rotating block 4 through the groove 11. Sixteen first connecting posts 6 are inserted and fixedly installed in the base 5, the sixteen first connecting posts 6 are uniformly distributed on the base 5 at equal intervals, a second connecting post 7 is inserted and fixedly installed in the base 5, the top end of the second connecting post 7 is circular, the first connecting post 6 and the second connecting post 7 are located below the contact sheet 8, and the bottom end of the contact sheet 8 extends out of the groove 11 and abuts against the top end of the first connecting post 6 and the second connecting post 7 respectively.

[0040] When the knob 3 is rotated, the knob 3 drives the rotating rod 2 to rotate, the rotating rod 2 drives the rotating block 4 to rotate, and the contact sheet 8 moves with the rotating block 4. The side of the contact sheet 8 extending out of the groove 11 always abuts against the circular top end of the second connecting post 7, the other side of the contact sheet 8 extending out of the groove 11 sequentially contacts the plurality of first connecting posts 6, and only one connecting post can be connected at the same time, thereby facilitating the control of the circuit power-on and power-off.

[0041] The first sealing ring 9 and the second sealing ring 10 are installed in the shell 1, the upper half of the first sealing ring 9 is located between the shell 1 and the rotating rod 2, and the lower half of the first sealing ring 9 is located between the second sealing ring 10 and the rotating block 4. The sealing ring groove 12 is formed in the knob 3 and located at the bottom of the knob 3, the top end of the first sealing ring 9 is inserted into the sealing ring groove 12, and the shell 1 and the knob 3 abut the first sealing ring 9 against the side wall of the rotating rod 2 through the sealing ring groove 12.

[0042] The upper half of the second sealing ring 10 is located between the first sealing ring 9 and the shell 1, the lower half of the second sealing ring 10 is located between the shell 1 and the base 5, the extrusion ring groove 13 is formed in the base 5 and located at the top of the base 5, the bottom end of the second sealing ring 10 is inserted into the extrusion ring groove 13, and the shell 1 abuts the second sealing ring 10 against the base 5 through the extrusion ring groove 13.

[0043] When the knob 3 is rotated, the first sealing ring 9 makes the knob 3 switch have good sealing performance in the long-term use process, the second sealing ring 10 performs secondary sealing on the knob 3 switch, the sealing performance of the knob 3 switch is better, impurities such as water and dust are avoided to enter to cause use failure, and the service life and use effect of the knob 3 switch are guaranteed.

[0044] With reference to Figure 3The bottom end of the rotating rod 2 and the middle part of the rotating block 4 are both provided with mounting holes 14, elastic members 15 are mounted in the mounting holes 14, clamping beads 16 are mounted at the two ends of the elastic members 15, and the two clamping beads 16 are respectively located at the two ends of the mounting holes 14. Sixteen limiting columns 17 are mounted on the inner side wall of the base 5 in an interval, and the sixteen limiting columns 17 are arranged in an equal interval in the base 5, and a limiting groove 18 is formed between each adjacent two limiting columns 17.

[0045] When the rotating knob 3 is rotated, the rotating block 4 drives the clamping beads 16 to rotate, the limiting columns 17 push the two clamping beads 16 to move towards the approaching direction and extrude the elastic members 15, when the two clamping beads 16 rotate through the limiting columns 17, the elastic members 15 are reset, and the elastic members 15 push the two clamping beads 16 to move towards the direction away from the middle part of the rotating block 4. Each clamping bead 16 enters the limiting groove 18 due to the elastic force of the elastic member 15, the limiting groove 18 limits the clamping bead 16, and the sound is generated due to the elastic force, so as to facilitate the operator to confirm the direction and position switched by the switch. In the application, the elastic member 15 can be selected as a spring.

[0046] Referring to Figure 4 , the top wall of the rotating knob 3 is provided with an indicating arrow 19, the indicating arrow 19 is triangular, the indicating arrow 19 is located at one end of the top wall of the rotating knob 3 close to the peripheral side wall, and sixteen indicating digits 20 are integrally formed on the top wall of the shell 1, the positions of the sixteen indicating digits 20 correspond to the sixteen first wiring columns 6 one by one, so as to facilitate the operator to control the rotating knob 3 to point to the wiring column to be connected, and avoid the error of line connection,

[0047] Referring to Figure 4 and Figure 5 , the bottom end of the rotating knob 3 is provided with a special-shaped hole 22, and the top end of the rotating rod 2 is provided with a special-shaped block 21, the special-shaped block 21 is inserted into the special-shaped hole 22. When the rotating knob 3 is rotated, the rotating knob 3 drives the special-shaped block 21 to rotate through the special-shaped hole 22, so as to facilitate the operator to rotate towards the indicating digits 20.

[0048] The bottom of the base 5 is fixedly provided with a clamping block 23, and the bottom end of the shell 1 is provided with a clamping groove 24, and the clamping block 23 is inserted into the clamping groove 24. When the rotating knob 3 is rotated, the base 5 is inserted into the clamping groove 24 of the shell 1 through the clamping block 23, so that the shell 1 will not be deviated in position with the rotation of the rotating knob 3, and the operator can control the rotating knob 3 to make the indicating arrow 19 and the indicating digits 20 correspond to the first wiring column 6 to be connected one by one, so as to guarantee the effectiveness of the line connection.

[0049] Because the knob 3 is inserted on the special-shaped block 21 through the special-shaped hole 22, the knob 3 can be pulled out, the base 5 is installed in the shell 1 and can also be pulled out, the rotating block 4 drives the rotating rod 2 to be separated from the base 5 through the elastic element 15, at this time, the clamping beads 16 fall off, the elastic element 15 is separated from the limiting of the clamping beads 16 and can be pulled out, so that the rotating block 4 and the rotating rod 2 are separated. It is convenient for the operator to install or dismount the knob 3 switch, and it is convenient for maintenance.

[0050] The implementation principle of the sealed knob switch in the embodiment of the application is that when the knob 3 is rotated, the first sealing ring 9 and the second sealing ring 10 move with the knob 3, the first sealing ring 9 makes the knob 3 switch have good sealing performance in the long-term use process, the second sealing ring 10 seals the knob 3 switch twice, so that the sealing performance of the knob 3 switch is better, and use failure caused by entering water, dust and other impurities is avoided, the service life and use effect of the knob 3 switch are ensured.

[0051] When the knob 3 is rotated, the limiting column 17 pushes the two clamping beads 16 to move towards the direction close to the middle part of the rotating block 4 and extrude the elastic element 15, when the two clamping beads 16 rotate through the limiting column 17, the elastic element 15 resets, the elastic element 15 pushes the two clamping beads 16 to move towards the direction away from the middle part of the rotating block 4 respectively, each clamping bead 16 enters the limiting groove 18 due to the elastic force of the elastic element 15, the limiting groove 18 limits the clamping bead 16, and sound is generated due to the elastic force, so that the operator can confirm the direction and position switched by the switch.

[0052] The above is only the optional embodiment of the disclosure and is not used to limit the disclosure. For those skilled in the art, the disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the disclosure shall be included in the protection range of the disclosure.

Claims

1. A sealed knob switch characterized by: The utility model provides a rotary switch, including shell (1), rotating rod (2), knob (3), rotating block (4), base (5), second binding post (7), contact sheet (8), first sealing ring (9), second sealing ring (10) and a plurality of first binding post (6), rotating rod (2) rotation is arranged in shell (1), knob (3) rotation is arranged on shell (1) and is connected with rotating rod (2) top, base (5) is arranged at the bottom of shell (1), rotating block (4) rotation is arranged on base (5), the bottom of rotating rod (2) is connected with rotating block (4), the recess (11) is set up in rotating block (4), contact sheet (8) is arranged in the recess (11) of rotating block (4), a plurality of first binding post (6) interval is arranged in base (5), second binding post (7) is fixedly arranged in base (5), the bottom of contact sheet (8) extends recess (11) and respectively abuts first binding post (6) with second binding post (7), first sealing ring (9) is arranged in shell (1), the top of first sealing ring (9) is located between shell (1) and rotating rod (2), second sealing ring (10) is arranged in shell (1), the bottom of first sealing ring (9) is located between second sealing ring (10) and rotating block (4), the top of second sealing ring (10) is located between first sealing ring (9) and shell (1), the bottom of second sealing ring (10) is located between base (5) and shell (1).

2. A sealed knob switch according to claim 1, wherein: The bottom of knob (3) is provided with a sealing ring groove (12), and the top of first sealing ring (9) is inserted into the sealing ring groove (12).

3. A sealed knob switch according to claim 1, wherein: The top of base (5) is provided with an extrusion ring groove (13), and the bottom of second sealing ring (10) is inserted into the extrusion ring groove (13).

4. A sealed knob switch according to claim 1, wherein: The bottom of rotating rod (2) and the middle part of rotating block (4) are both provided with mounting holes (14), elastic members (15) are arranged in the mounting holes (14), the two ends of each elastic member (15) are provided with clamping beads (16), a plurality of limiting columns (17) are arranged on the inner side wall of base (5) at intervals, a limiting groove (18) is formed between every two adjacent limiting columns (17), and the clamping beads (16) are abutted against the limiting groove (18) by the elastic members (15).

5. A sealed knob switch according to claim 1, wherein: An indicating arrow (19) is arranged on the top wall of knob (3), a plurality of indicating digits (20) are arranged on the top wall of shell (1), and the plurality of indicating digits (20) correspond to the plurality of first binding posts (6) one by one.

6. A sealed knob switch according to claim 1, wherein: The top of rotating rod (2) is formed with a special-shaped block (21), the bottom of knob (3) is provided with a special-shaped hole (22), and the special-shaped block (21) is inserted into the special-shaped hole (22).

7. A sealed knob switch according to claim 1, wherein: A clamping block (23) is arranged on the outer side wall of base (5), and the bottom of the outer side wall of shell (1) is provided with a clamping groove (24), and the clamping block (23) is inserted into the clamping groove (24).

8. A sealed knob switch according to claim 1, wherein: Anti-skid lines are arranged on the outer side wall of knob (3).

9. A sealed knob switch according to claim 1, wherein: The top wall of the base (5) is provided with a guide column (25) in the middle, the bottom wall of the rotating block (4) is provided with a guide hole (26) in the middle, and the guide column (25) is inserted into the guide hole (26).

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