Trigger switch self-locking structure and blower

Abstract

The utility model belongs to the field of garden electric tools, and particularly discloses a trigger switch self-locking structure and a hair drive.The trigger switch self-locking structure comprises a speed regulation knob and a trigger switch which are rotationally installed on a handle shell, a connecting base is arranged on the speed regulation knob, the connecting base abuts against the trigger switch, and the trigger switch is connected with the speed regulation knob; the connecting base and the speed regulation knob are designed in a split mode, the connecting base is convenient to install in the handle shell, after the connecting base is connected with the speed regulation knob, the speed regulation knob and the connecting base can rotate synchronously, after the speed regulation knob rotates, the trigger switch can be triggered to rotate through the connecting base, and the speed regulation knob and the trigger switch can achieve synchronous linkage.

Description

Technical Field

[0001] The utility model belongs to the field of garden electric tools, and particularly relates to a trigger switch self-locking structure and a hair dryer. Background Art

[0002] In order to conveniently adjust the blowing air volume, a speed regulation knob is provided on the housing of the hair dryer. After the speed regulation knob rotates, the hair dryer can be controlled to reach different speed regulation gears. Some hair dryers are equipped with a speed regulation knob and a trigger switch. The trigger switch mainly adjusts the blowing air volume of the hair dryer by pressing. When the hair dryer is in constant speed cruise, it is required that the trigger switch be pressed to a suitable position and remain unchanged. For this reason, the speed regulation knob and the trigger switch on some hair dryers are associated through a self-locking structure.

[0003] Through understanding of the related art, the self-locking structures of some speed regulation knobs are of an integral design, and their installation convenience on the machine housing needs to be improved. Moreover, when the self-locking structure links the speed regulation knob and the trigger switch, the stability of controlling the rotation of the trigger switch also needs to be improved. Content of the Utility Model

[0004] The purpose of at least one specific embodiment of the utility model is to solve the defects existing in the prior art and provide a trigger switch self-locking structure.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A trigger switch self-locking structure includes:

[0007] A speed regulation knob rotatably installed on the handle housing;

[0008] A trigger switch rotatably installed on the handle housing;

[0009] A connecting seat is arranged on the speed regulation knob, the connecting seat abuts against the trigger switch, and the connecting seat can rotate synchronously with the speed regulation knob to drive the trigger switch to rotate.

[0010] Through the above technical scheme, the connecting seat and the speed regulation knob adopt a split design, the connecting seat is more convenient to install in the handle housing, the speed regulation knob and the connecting seat can rotate synchronously. After the speed regulation knob rotates, the trigger switch can be touched to rotate through the connecting seat, and the speed regulation knob and the trigger switch can achieve synchronous linkage.

[0011] Further, an installation part is convexly formed inside the handle housing, and the installation part is suitable for installing the connecting seat;

[0012] The bottom of the installation part has an installation surface, a damping part is arranged inside the installation part, the speed regulation knob has a connecting part, the damping part is sleeved outside the connecting part, and the connecting seat is connected to the connecting part through a fixing part;

[0013] After the connecting seat is connected to the connecting part through the fixing piece, the damping piece is axially compressed between the connecting seat and the mounting surface;

[0014] Among them, the damping piece is preferably a wave washer, and can also be an elastic washer or a bowl-shaped combined washer. After the damping piece is installed at the bottom of the installation part, a damping force generated by axial compression is provided between the connecting seat and the bottom mounting surface of the installation part. After the speed regulation knob rotates a certain angle, the damping force generated by the axial compression of the damping piece can make the speed regulation knob in close contact with the handle housing, thereby realizing the constant speed function of the speed regulation knob.

[0015] Furthermore, a first bump and a second bump are respectively provided on the connecting seat;

[0016] A limiting groove is provided on one side of the installation part corresponding to the rotation of the connecting seat. The second bump on the connecting seat can rotate in the limiting groove, and the limiting groove is suitable for limiting the rotation stroke of the second bump.

[0017] Furthermore, the trigger switch includes a matching part, and the matching part abuts against the first bump on the connecting seat. The speed regulation knob can drive the connecting seat to rotate synchronously, so that the first bump drives the trigger switch to rotate through the matching part that abuts against it.

[0018] Through the above technical solution, when the speed regulation knob rotates, it drives the connecting seat to rotate within the installation part. The first bump on the connecting seat will toggle the matching part and drive the matching part to rotate. Correspondingly, the matching part drives the trigger switch to rotate. During the rotation of the first bump, the second bump on the connecting seat will also rotate synchronously. The rotation stroke of the second bump is limited by the limiting groove on the installation part. Correspondingly, the rotation strokes of the speed regulation knob and the trigger switch will also be limited. When the second bump is at one end of the inner wall of the limiting groove, the speed regulation knob and the trigger switch are in the initial state. When the second bump is at the other end of the inner wall of the limiting groove, the speed regulation knob and the trigger switch are in the highest speed adjustment state;

[0019] The abutting cooperation between the first bump and the matching part between the connecting seat and the trigger switch can improve the rotation stability of the trigger switch. The cooperation between the second bump and the limiting groove between the connecting seat and the installation part can effectively control the rotation strokes of the speed regulation knob and the trigger switch.

[0020] Furthermore, the trigger switch is rotatably connected to the handle housing through a pin shaft, and a torsion spring for controlling the reset of the trigger switch is sleeved on the pin shaft.

[0021] Furthermore, the trigger switch further includes a linkage arm, and the linkage arm is connected to the throttle control wire.

[0022] Through the above technical solution, when the speed control knob drives the trigger switch to rotate through the connecting seat, the linkage arm will swing along with it. The linkage arm on the trigger switch can be linked with the throttle control line, thereby adjusting the air volume of the hair dryer.

[0023] Furthermore, the connecting seat is provided with a supporting portion, the end face of the supporting portion is a supporting surface. After the connecting seat is connected to the connecting portion, the supporting portion is sleeved on the outside of the connecting portion, and the damping member is axially compressed between the mounting surface and the supporting surface.

[0024] Furthermore, the rotation angle of the speed control knob, the rotation angle of the connecting seat, and the rotation angle of the trigger switch are the same.

[0025] Furthermore, the rotation angle of the connecting seat is smaller than the radian of the limiting groove.

[0026] The beneficial technical effects of the trigger switch self-locking structure provided in this application compared with the prior art are as follows: 1. The connecting seat and the speed control knob in this application adopt a split design, and the connecting seat is more convenient to install in the handle housing. The speed control knob and the connecting seat can rotate synchronously. After the speed control knob rotates, the trigger switch can be touched to rotate through the connecting seat, and the synchronous linkage between the speed control knob and the trigger switch is good;

[0027] 2. The connection between the connecting seat and the trigger switch through the abutting fit of the first convex block and the mating portion can improve the stability of the rotation of the trigger switch. The connection between the connecting seat and the mounting portion through the cooperation of the second convex block and the limiting groove can effectively control the rotation stroke of the speed control knob and the trigger switch.

[0028] Another technical solution adopted in this application is: to provide a hair dryer, including the above trigger switch self-locking structure.

[0029] After the hair dryer provided in this application adopts the above trigger switch self-locking structure, its performance is more stable and its service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic installation structure diagram of the present application on the handle housing;

[0032] Figure 2 It is an exploded view of the present application;

[0033] Figure 3 For Figure 1Schematic cross-sectional view along line A-A;

[0034] Figure 4 is Figure 3 an enlarged view of area B in;

[0035] Figure 5 Schematic internal structure diagram of the present application;

[0036] Figure 6 Schematic diagram of the cooperation between the connection seat and the installation part of the present application;

[0037] Figure 7 Schematic diagram of the cooperation of the self-locking structure of the present application in the initial state;

[0038] Figure 8 Schematic diagram of the cooperation of the self-locking structure of the present application in the highest speed state;

[0039] Figure 9 Schematic structure diagram of the hair dryer in the embodiment of the present application. Specific implementation mode

[0040] Next, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Refer to Figure 1 , Figure 2 , a trigger switch self-locking structure 100, including a speed control knob 20 and a trigger switch 30 respectively rotatably installed on a handle housing 10. Among them, a connection seat 40 is arranged on the speed control knob 20, the connection seat 40 abuts against the trigger switch 30, and the connection seat 40 can rotate synchronously with the speed control knob 20 to drive the trigger switch 30 to rotate;

[0042] In this embodiment, the connection seat 40 and the speed control knob 20 adopt a split design. The connection seat 40 is conveniently installed in the handle housing 10. After the connection seat 40 is connected to the speed control knob 20, the speed control knob 20 and the connection seat 40 can rotate synchronously. After the speed control knob 20 rotates, the trigger switch 30 can be touched to rotate through the connection seat 40, and the speed control knob 20 and the trigger switch 30 can achieve synchronous linkage.

[0043] Specifically, refer to Figure 3 , Figure 4, an installation part 101 is convexly formed inside the handle housing 10. The installation part 101 is used to install the connection seat 40. The bottom of the installation part 101 has an installation surface 102. A damping member 50 is provided inside the installation part 101. The speed regulation knob 20 has a connection part 201. The damping member 50 is sleeved outside the connection part 201. The connection seat 40 has a support part 401. The end face of the support part 401 is a support surface 402. When the connection seat 40 is installed at the installation part 101, the support part 401 is sleeved outside the connection part 201. The connection seat 40 is connected to the connection part 201 through a fixing member 60. The damping member 50 is in an axially compressed state between the installation surface 102 and the support surface 402.

[0044] Among them, the fixing member 60 is preferably a screw, and the damping member 50 is preferably a wave washer, and can also be an elastic washer or a bowl-shaped combined washer. After the damping member 50 is installed at the bottom of the installation part 101, under the tightening force of the fixing member 60, the installation surface 102 and the support surface 402 clamp and axially compress the damping member 50, so that a damping force is generated when the speed regulation knob 20 and the connection seat 40 rotate. After the speed regulation knob 20 rotates a certain angle, without external force, the damping force generated by the damping member 50 can prevent the speed regulation knob 20 and the connection seat 40 from rotating by themselves, thereby realizing the constant speed function of the speed regulation knob 20; moreover, when the handle housing 10 generates high-frequency vibration, this damping force can also prevent the speed regulation knob 20 from rotating outside the handle housing 10, ensuring the stability of the speed regulation knob 20 when it is set at a constant speed.

[0045] Further, referring to Figure 5 , Figure 6 , a first convex block 403 and a second convex block 404 are respectively provided on the connection seat 40. A limiting groove 103 is opened on one side of the installation part 101 corresponding to the rotation of the connection seat 40. The second convex block 404 on the connection seat 40 can rotate in the limiting groove 103, and the limiting groove 103 is suitable for limiting the rotation stroke of the second convex block 404.

[0046] Among them, the rotation angle of the speed regulation knob 20, the rotation angle of the connection seat 40, and the rotation angle of the trigger switch 30 are the same. The rotation angle of the connection seat 40 is smaller than the radian of the limiting groove 103. In this embodiment, the rotation angle of the connection seat 40 is 45 degrees, and the radian of the limiting groove 103 is 70 degrees.

[0047] The trigger switch 30 is rotatably connected to the handle housing 10 through a pin shaft 70. A torsion spring 80 for controlling the reset of the trigger switch 30 is sleeved on the pin shaft 70. The trigger switch 30 includes a mating part 301 and a linkage arm 302. The mating part 301 abuts against the first convex block 403 on the connection seat 40. The speed regulation knob 20 can drive the connection seat 40 to rotate synchronously, so that the first convex block 403 drives the trigger switch 30 to rotate through the mating part 301 abutting against it;

[0048] In addition, refer to Figure 7 , Figure 8 The linkage arm 302 is connected to the throttle control line 90. When the trigger switch 30 rotates, the linkage arm 302 will swing together. During the swinging process, the linkage arm 302 can be linked with the throttle control line 90 to adjust the air volume of the hair dryer.

[0049] The abutment between the connecting seat 40 and the trigger switch 30 through the first protrusion 403 and the matching part 301 can improve the rotation stability of the trigger switch 30, and the cooperation between the connecting seat 40 and the mounting part 101 through the second protrusion 404 and the limiting groove 103 can effectively control the rotation stroke of the speed control knob 20 and the trigger switch 30.

[0050] In summary, when the speed knob 20 rotates, it drives the connecting seat 40 to rotate in the mounting portion 101, and the first protrusion 403 on the connecting seat 40 will toggle the matching portion 301 and drive the matching portion 301 to rotate. Correspondingly, the matching portion 301 drives the trigger switch 30 to rotate. When the trigger switch 30 rotates, the linkage arm 302 is linked with the throttle control line 90 to adjust the air volume of the hair dryer. During the rotation of the first protrusion 403, the second protrusion 404 on the connecting seat will also rotate synchronously. The rotation stroke of the second protrusion 404 is limited by the limiting groove 103 on the mounting portion 101. Correspondingly, the rotation stroke of the speed knob 20 and the trigger switch 30 will also be limited. When the second protrusion 404 is at one end of the inner wall of the limiting groove 103, the speed knob 20 and the trigger switch 30 are in the initial state. When the second protrusion 404 is at the other end of the inner wall of the limiting groove 103, the speed knob 20 and the trigger switch 30 are in the highest speed adjustment state.

[0051] The speed knob 20 can be adjusted to any position between the initial state of the hair dryer just started and the high-speed state (rotated at any angle within the controllable stroke), and the trigger switch 30 can be locked under the action of the self-locking structure (the trigger switch will not rotate when no external force is applied), so that the hair dryer maintains the current state performance and realizes the hair dryer cruise control.

[0052] When the speed knob 20 is rotated to the initial position, the self-locking structure cooperates with the torsion spring 80 of the trigger switch 30 to drive the trigger switch 30 to rotate to the reset state, and the hair dryer stops running.

[0053] Example 2

[0054] Reference Figure 9 Based on the same technical concept, an embodiment of the present application provides a hair dryer 200, including the trigger switch self-locking structure 100 in the above-mentioned embodiment 1. After the hair dryer adopts the above-mentioned trigger switch self-locking structure 100, the performance is more stable and the service life is long.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trigger switch self-locking structure, comprising: The speed regulating knob is rotatably mounted on the handle housing; A trigger switch, rotatably mounted on the handle housing; It is characterized in that a connecting seat is provided on the speed regulating knob, the connecting seat abuts against the trigger switch, and the connecting seat can rotate synchronously with the speed regulating knob to drive the trigger switch to rotate.

2. The trigger switch self-locking structure according to claim 1, characterized in that: The handle housing is provided with a mounting portion protruding therein, and the mounting portion is suitable for mounting the connecting seat; The bottom of the mounting portion is provided with a mounting surface, the inner side of the mounting portion is provided with a damping member, the speed regulating handle is provided with a connecting portion, the damping member is sleeved on the outer side of the connecting portion, and the connecting seat is connected to the connecting portion through a fixing member; After the connecting seat is connected to the connecting portion through the fixing member, the damping member is located between the connecting seat and the mounting surface and is in an axially compressed state.

3. The trigger switch self-locking structure according to claim 2, characterized in that: The connecting seat is respectively provided with a first protrusion and a second protrusion; A limiting groove is provided on the mounting portion at one side corresponding to the rotation of the connecting seat, and the second protrusion on the connecting seat can rotate in the limiting groove, and the limiting groove is suitable for limiting the rotation stroke of the second protrusion.

4. The trigger switch self-locking structure according to claim 3, characterized in that: The trigger switch includes a matching portion, which abuts against a first protrusion on the connecting seat. The speed regulating knob can drive the connecting seat to rotate synchronously, so that the first protrusion drives the trigger switch to rotate through the matching portion abutting against it.

5. The trigger switch self-locking structure according to claim 1, characterized in that: The trigger switch is rotatably connected to the handle housing via a pin shaft, and a torsion spring for controlling the resetting of the trigger switch is sleeved on the pin shaft.

6. The trigger switch self-locking structure according to claim 4, characterized in that: The trigger switch also includes a linkage arm, and the linkage arm is connected to the throttle control line.

7. The trigger switch self-locking structure according to claim 2, characterized in that: The connecting seat has a supporting portion, the end face of the supporting portion is a supporting surface, after the connecting seat is connected to the connecting portion, the supporting portion is sleeved on the outside of the connecting portion, and the damping member is located between the mounting surface and the supporting surface and is in an axially compressed state.

8. The trigger switch self-locking structure according to claim 4, characterized in that: The rotation angle of the speed regulating knob, the rotation angle of the connecting seat and the rotation angle of the trigger switch are consistent.

9. The trigger switch self-locking structure according to claim 8, characterized in that: The rotation angle of the connecting seat is smaller than the curvature of the limiting groove.

10. A hair dryer, characterized in that: The invention comprises the trigger switch self-locking structure according to any one of claims 1 to 9.

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