Damping structure of speed control switch and garden air blower

Abstract

The utility model relates to the field of garden electric tools, and particularly discloses a damping structure of a speed regulation switch and a garden air blower, the damping structure of the speed regulation switch comprises a speed regulation handle and a shifting piece in linkage with the speed regulation handle, when the speed regulation handle is in linkage with the shifting piece, the shifting piece can trigger the speed regulation switch, a machine shell is provided with a mounting part, and the mounting part is arranged in the machine shell. The side face of one side of the installation portion is an installation face, the side face of the other side of the installation portion is a supporting face, an elastic piece is arranged on the installation face, and when the elastic piece is in a compressed state, the elastic piece can exert supporting force on the speed adjusting handle so that the surface of the shifting piece can make contact with the supporting face. The speed regulation handle can drive the shifting piece to be close to the supporting face of the installation part so that the surface of the shifting piece can make close contact with the supporting face, damping force can be generated after the surface of the shifting piece makes contact with the supporting face, and when the machine shell generates high-frequency vibration, the damping force can also prevent the speed regulation handle from rotating on the outer side of the machine shell; and the mounting stability of the speed regulating handle is ensured.

Description

Technical Field

[0001] The present application relates to the field of garden power tools, and in particular to a damping structure of a speed regulating switch and a garden blower. Background Art

[0002] A garden blower is a commonly used garden power tool, which is mainly used to use airflow to clean up fallen leaves, grass clippings, road dust, snow, etc.

[0003] In order to facilitate the adjustment of the amount of air blowing, the garden blower is equipped with a speed switch inside the shell, and a speed handle is provided on the shell. After the speed handle is rotated, the speed switch can be controlled to reach different speed gears. Through the understanding of some related technologies, some garden blowers will use a stepless speed switch inside. When the speed handle on the shell is rotated to any position within its adjustable range, the stepless speed switch can achieve the speed regulation effect. We found in the actual production process that after the speed handle corresponding to the stepless speed switch is installed on the casing, when the garden blower is working, the speed handle is easy to loosen due to the vibration of the casing, which causes the speed gear set in advance by the speed handle to change, and the stability of the installation of the speed handle is not good enough. Utility Model Content

[0004] The purpose of at least one specific implementation of the utility model is to solve the defects of the prior art and provide a damping structure of a speed regulating switch.

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

[0006] A damping structure for a speed regulating switch, comprising:

[0007] The speed regulating handle is rotatably mounted on the casing;

[0008] A toggle member connected to the speed regulating handle and linked with the speed regulating handle. When the speed regulating handle is linked with the toggle member, the toggle member can trigger the speed regulating switch;

[0009] The housing has a mounting portion, a side surface on one side of the mounting portion is a mounting surface, and a side surface on the other side is a supporting surface, and an elastic member is arranged on the mounting surface;

[0010] When the elastic member is in a compressed state, the elastic member can exert a supporting force on the speed regulating handle so that the surface of the toggle member contacts the supporting surface.

[0011] Through the above technical solution, after the elastic member is arranged on the mounting surface, in the normal mounting state, the elastic member is in a compressed state, and the compressed elastic member will exert an elastic force (supporting force) on the speed regulating handle. Under the action of the elastic force, the speed regulating handle will drive the toggle member to move closer to the supporting surface of the mounting portion so that the surface of the toggle member is in close contact with the supporting surface. After the surface of the toggle member contacts the supporting surface, a damping force will be generated. In the absence of external force, this damping force can hinder the rotation of the toggle member and the speed regulating handle itself. When the casing generates high-frequency vibration, the damping force can also prevent the speed regulating handle from rotating on the outside of the casing, thereby ensuring the stability of the installation of the speed regulating handle.

[0012] Further, a mounting groove is provided at the outer side of the mounting portion, the mounting portion is configured as the bottom of the mounting groove, and the elastic member is arranged in the mounting groove;

[0013] The speed regulating handle has a connecting portion, which passes through the bottom of the mounting groove and is connected to the toggle member through a fixing member, and the elastic member is sleeved on the outer periphery of the connecting portion, wherein the fixing member is preferably a screw.

[0014] Through the above technical solution, the speed control handle is fixedly connected to the toggle piece. When the speed control switch needs to be controlled, the speed control handle is manually turned, and the speed control handle drives the toggle piece to rotate together through the connecting part. After the speed control handle is turned to the appropriate position, the toggle piece triggers the speed control switch to reach the appropriate gear position. During the rotation of the speed control handle, the elastic piece in the mounting groove is in a stationary state, but the elastic piece will continue to apply supporting elastic force to the speed control handle.

[0015] Furthermore, since the speed regulating handle will rotate relative to the elastic member during the rotation process, in order to ensure the continuity of the rotation of the speed regulating handle and avoid wear on the elastic member, a wear-resistant member is provided on one side of the elastic member, and the wear-resistant member is sleeved on the outer periphery of the connecting portion.

[0016] Among them, the wear-resistant part is preferably a metal gasket, which has high hardness and wear resistance. One side of the wear-resistant part is a rough surface, and the other side is a smooth surface. The inner side of the speed control handle has a guide contact surface. The rough surface of the wear-resistant part contacts the surface of the elastic part, and the smooth surface of the wear-resistant part contacts the guide contact surface.

[0017] Through the above technical scheme, after the wear-resistant part contacts the surface of the elastic part through the rough surface, the wear-resistant part is not easy to move on the surface of the elastic part. During the rotation of the speed regulating handle, the guide contact surface on the inner side of the speed regulating handle slides with the smooth surface of the wear-resistant part, and the rotation of the speed regulating handle is relatively smooth. Moreover, when the speed regulating handle is rotating or stationary, the elastic part is always in a compressed state. The compressed elastic part will exert an elastic force (supporting force) on the speed regulating handle. Under the action of the elastic force, the speed regulating handle will drive the toggle part to move closer to the supporting surface of the mounting part so that the surface of the toggle part is in close contact with the supporting surface. After the surface of the toggle part contacts the supporting surface, a damping force will be generated. After the speed regulating handle reaches the appropriate position, without the action of external force, this damping force can hinder the rotation of the toggle part and the speed regulating handle itself. When the casing generates high-frequency vibration, the damping force can also prevent the speed regulating handle from rotating on the outside of the casing, thereby ensuring the stability of the positioning of the speed regulating handle when it is stationary.

[0018] Furthermore, a plurality of first positioning protrusions are provided on the mounting surface, and a plurality of second positioning protrusions are provided on the inner wall of the mounting groove. The first positioning protrusions support the side surfaces of the elastic member, and the second positioning protrusions support the peripheral surface of the elastic member.

[0019] Through the above technical solution, the first positioning protrusion and the second positioning protrusion mainly play a role in fixing the elastic member in the installation groove, ensuring that the elastic member is in a stable static state in the installation groove when the speed control handle is rotated.

[0020] Furthermore, a trigger is mounted on the casing, the trigger is hinged to the casing through a pin, and a reset torsion spring is sleeved on the pin;

[0021] The trigger is provided with a linkage part and a pressing part, the pressing part is close to the trigger part of the speed regulating switch and conflicts with the trigger part, and the toggle part is provided with a toggle part, which corresponds to the linkage part.

[0022] Furthermore, the triggering part is elastic, and the end surface of the triggering part always contacts with the pressing part under the action of its own elastic force.

[0023] Through the above technical solution, when speed adjustment is required, the speed adjustment handle is manually rotated, and the speed adjustment handle drives the toggle member to rotate synchronously, and the toggle part of the toggle member applies a toggle force to the linkage part. Since the trigger is hinged to the casing through a pin shaft, after the linkage part is subjected to force, the trigger will rotate around the pin shaft as the center. After the trigger rotates, the pressing part at its end will apply a pressing force to the trigger part of the speed adjustment switch, thereby triggering the speed adjustment switch to perform speed adjustment. In addition, when the trigger is manually pulled, the pressing part of the trigger will also apply a pressing force to the trigger part of the speed adjustment switch, thereby triggering the speed adjustment switch to perform speed adjustment. After the trigger is released from the trigger, the trigger will reset, and the trigger part will also reset under the action of its own elastic force. Therefore, the trigger can serve the purpose of temporary speed adjustment, and its function is different from that of the speed adjustment handle.

[0024] Furthermore, the elastic member is a rubber ring. When the rubber ring is axially squeezed, its restoring elastic force is large and stable. The compressed rubber ring can provide good elastic support for the speed regulating handle.

[0025] Furthermore, the speed regulating switch is a stepless speed regulating switch, and the speed regulating handle can achieve a stepless speed regulating effect.

[0026] The damping structure of the speed control switch provided by the present application has a beneficial technical effect compared with the prior art in that: the casing of the present application has a mounting portion, the side surface on one side of the mounting portion is a mounting surface, and the side surface on the other side is a supporting surface, and an elastic member is arranged on the mounting surface. After the elastic member is arranged on the mounting surface, in a normal installation state, the elastic member is in a compressed state, and the compressed elastic member will exert an elastic force (supporting force) on the speed control handle. Under the action of the elastic force, the speed control handle will drive the toggle member to move closer to the supporting surface of the mounting portion so that the surface of the toggle member is in close contact with the supporting surface. After the surface of the toggle member contacts the supporting surface, a damping force will be generated. In the absence of external force, this damping force can hinder the toggle member and the speed control handle itself from rotating. When the casing generates high-frequency vibration, the damping force can also prevent the speed control handle from rotating on the outside of the casing, thereby ensuring the stability of the installation of the speed control handle.

[0027] Another technical solution adopted by the present application is to provide a garden blower, including the damping structure of the above-mentioned speed regulating switch.

[0028] After the garden blower provided in the present application adopts the damping structure of the speed control switch, the speed control handle on the casing is installed with strong stability and will not become loose due to the vibration of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is a structural schematic diagram of a speed regulating switch damping structure in a certain embodiment of the present application;

[0031] Figure 2 for Figure 1 A schematic cross-sectional view of the damping structure of the medium speed switch;

[0032] Figure 3 It is a schematic diagram of the installation of the speed regulating switch damping structure in the casing;

[0033] Figure 4 for Figure 3 Explosion diagram of

[0034] Figure 5 This is a schematic diagram of the structure of the speed regulating switch damping structure before the elastic member is installed;

[0035] Figure 6 It is a schematic diagram of the coordination between the speed regulating switch damping structure and the trigger;

[0036] Figure 7 It is a schematic diagram of the structure of the speed regulating switch damping structure after cooperating with the trigger at another angle;

[0037] Figure 8 This is a schematic diagram of the structure of a trigger in a certain embodiment of the present application;

[0038] Fig. 9 This is a schematic diagram of the structure of a garden blower in an embodiment of the present application;

[0039] Fig.10 It is a partial cross-sectional schematic diagram of the garden blower in the embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Example 1

[0042] Reference Figure 1 , Figure 2 , Figure 3 A damping structure 100 of a speed regulating switch includes a speed regulating handle 11 rotatably mounted on a housing 10, and a toggle member 12 connected to the speed regulating handle 11 and linked with the speed regulating handle 11, wherein when the speed regulating handle 11 is linked with the toggle member 12, the toggle member 12 can trigger a speed regulating switch 13.

[0043] Reference Figure 4 , Figure 5 The housing 10 has a mounting portion 10a, a side surface of one side of the mounting portion 10a is a mounting surface 101, and a side surface of the other side is a supporting surface 102. An elastic member 14 is provided on the mounting surface 101. When the elastic member 14 is in a compressed state, the elastic member 14 can apply a supporting force to the speed regulating handle 11 so that the surface of the toggle member 12 contacts the supporting surface 102.

[0044] In addition, a mounting groove 103 is provided on the outer side of the mounting portion 10a, and the mounting portion 10a is constructed as the bottom of the mounting groove 103, and the elastic member 14 is arranged in the mounting groove 103; the speed regulating handle 11 has a connecting portion 111, and the connecting portion 111 passes through the bottom of the mounting groove 103 and is connected to the toggle member 12 through a fixing member 15, and the elastic member 14 is sleeved on the outer periphery of the connecting portion 111, wherein the fixing member 15 is preferably a screw, and after the fixing member 15 is threadedly connected to the connecting portion 111, the elastic member 14 is in an axially compressed state between the toggle member 12 and the speed regulating handle 11.

[0045] In this embodiment, the elastic member 14 adopts a rubber ring, and the speed control switch 13 adopts a stepless speed control switch. The speed control handle 11 can achieve an infinitely variable speed adjustment effect. After the elastic member 14 is arranged on the mounting surface 101, in the normal mounting state, the elastic member 14 is in a compressed state. The compressed elastic member 14 (rubber ring) will exert a large and stable elastic force (supporting force) on the speed control handle 11. Under the action of the elastic force, the speed control handle 11 will drive the toggle member 12 to move closer to the supporting surface 102 of the mounting portion 10a so that the surface of the toggle member 12 is in close contact with the supporting surface 102. After the surface of the toggle member 12 contacts the supporting surface 102, a damping force will be generated. In the absence of external force, this damping force can hinder the toggle member 12 and the speed control handle 11 from rotating. When the housing 10 generates high-frequency vibration, the damping force can also prevent the speed control handle 11 from rotating on the outside of the housing 10, thereby ensuring the stability of the installation of the speed control handle 11.

[0046] After the speed regulating handle 11 is fixedly connected to the toggle member 12, when the speed regulating switch 13 needs to be controlled, the speed regulating handle 11 is manually rotated, and the speed regulating handle 11 drives the toggle member 12 to rotate together through the connecting part 111. After the speed regulating handle 11 is rotated to a suitable position, the toggle member 12 triggers the speed regulating switch 13 to reach a suitable gear position. During the rotation of the speed regulating handle 11, the elastic member 14 in the mounting groove 103 is in a stationary state, but the elastic member 14 will continue to apply a supporting elastic force to the speed regulating handle 11.

[0047] As the speed regulating handle 11 rotates, it rotates relative to the elastic member 14 . In order to ensure the continuity of the rotation of the speed regulating handle 11 and avoid wear on the elastic member 14 , a wear-resistant member 16 is provided on one side of the elastic member 14 . The wear-resistant member 16 is sleeved on the outer periphery of the connecting portion 111 .

[0048] Among them, the wear-resistant part 16 is preferably a metal gasket, which has high hardness and wear resistance. One side of the wear-resistant part 16 is a rough surface, and the other side is a smooth surface. The inner side of the speed regulating handle 11 has a guide contact surface 112, and the rough surface of the wear-resistant part 16 contacts the surface of the elastic part 14, and the smooth surface of the wear-resistant part 16 contacts the guide contact surface 112. After the wear-resistant part 16 contacts the surface of the elastic part 14 through the rough surface, the wear-resistant part 16 is not easy to move on the surface of the elastic part 14. During the rotation of the speed regulating handle 11, the guide contact surface 112 on the inner side of the speed regulating handle 11 slides with the smooth surface of the wear-resistant part 16, and the speed regulating handle 11 has good rotation continuity. Moreover, when the speed regulating handle 11 is rotating or stationary, the elastic part 14 is in contact with the guide contact surface 112. The elastic member 14 is always in a compressed state. The compressed elastic member 14 will apply an elastic force (supporting force) to the speed regulating handle 11. Under the action of the elastic force, the speed regulating handle 11 will drive the toggle member 12 to move closer to the supporting surface 102 of the mounting portion 10a so that the surface of the toggle member 12 is in close contact with the supporting surface 102. A damping force will be generated after the surface of the toggle member 12 contacts the supporting surface 102. After the speed regulating handle 11 reaches a suitable position, without being affected by external forces, this damping force can hinder the toggle member 12 and the speed regulating handle 11 itself from rotating. When the housing 10 generates high-frequency vibration, the damping force can also prevent the speed regulating handle 11 from rotating on the outside of the housing 10, thereby ensuring the stability of the positioning of the speed regulating handle 11 when it is stationary.

[0049] Further, refer to Figure 5 A plurality of first positioning protrusions 104 are provided on the mounting surface 101, and a plurality of second positioning protrusions 105 are provided on the inner wall of the mounting groove 103. The first positioning protrusions 104 support the side surfaces of the elastic member 14, and the second positioning protrusions 105 support the circumferential surface of the elastic member 14. The first positioning protrusions 104 and the second positioning protrusions 105 mainly play a role in fixing the elastic member 14 in the mounting groove 103, ensuring that when the speed regulating handle 11 is rotated, the elastic member 14 is in a stable static state in the mounting groove 103.

[0050] In some embodiments, reference Figure 6 , Figure 7 , Figure 8A trigger 20 is installed on the casing 10. The trigger 20 is hinged to the casing 10 through a pin shaft. A reset torsion spring is sleeved on the pin shaft. The trigger 20 has a reset function. The trigger 20 mainly plays a role of temporary speed regulation. Among them, the trigger 20 has a linkage part 201 and a pressing part 202. The pressing part 202 is close to the trigger part 130 of the speed regulating switch 13 and conflicts with the trigger part 130. The toggle part 121 is provided on the toggle member 12. The toggle part 121 corresponds to the linkage part 201. The trigger part 130 is elastic. Under the action of its own elastic force, the end face of the trigger part 130 always conflicts with the pressing part 202. When the trigger part 130 is pressed to different degrees, the speed regulating switch 13 will control the output of different speed regulation parameters accordingly.

[0051] After the trigger 20 is installed on the housing 10, when the speed adjustment needs to be performed, the speed adjustment handle 11 is manually rotated, and the speed adjustment handle 11 drives the toggle member 12 to rotate synchronously. The toggle portion 121 of the toggle member 12 applies a toggle force to the linkage portion 201. Since the trigger 20 is hinged to the housing 10 through a pin shaft, after the linkage portion 201 is subjected to force, the trigger 20 will rotate around the pin shaft as the center. After the trigger 20 rotates, the pressing portion 202 at its end will apply a pressing force to the trigger portion 130 of the speed adjustment switch 13, thereby triggering the speed adjustment switch 13 to adjust the speed. In addition, when the trigger 20 is manually pulled, the trigger 20 is automatically turned to the trigger portion 130 of the speed adjustment switch 13. When the trigger 20 is pulled, the pressing portion 202 of the trigger 20 will also apply pressing force to the trigger portion 130 of the speed control switch 13, thereby triggering the speed control switch 13 to adjust the speed. After the person's hand leaves the trigger 20, the trigger 20 will reset, and the trigger portion 130 will also reset under the action of its own elastic force. When the speed control handle 11 is adjusting the speed, when the speed control handle 11 is adjusted to a different position, the trigger portion 130 will not reset after being pressed by the pressing portion 202 of the trigger. Therefore, the trigger 20 mainly serves the purpose of temporary speed adjustment, and its function is different from that of the speed control handle 11.

[0052] Example 2

[0053] Reference Fig. 9 , Fig.10 Based on the same technical concept, an embodiment of the present application provides a garden blower 200, including the damping structure 100 of the speed control switch in the above-mentioned embodiment 1. After the garden blower adopts the damping structure 100 of the above-mentioned speed control switch, the speed control handle 11 on the casing 10 is installed with strong stability and will not become loose due to the vibration of the casing 10.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A damping structure of a speed regulating switch, comprising: The speed regulating handle is rotatably mounted on the casing; A toggle member connected to the speed regulating handle and linked with the speed regulating handle, and when the speed regulating handle is linked with the toggle member, the toggle member can trigger the speed regulating switch; The housing is characterized in that the housing has a mounting portion, a side surface on one side of the mounting portion is a mounting surface, and a side surface on the other side is a supporting surface, and an elastic member is provided on the mounting surface; When the elastic member is in a compressed state, the elastic member can apply a supporting force to the speed regulating handle so that the surface of the toggle member contacts the supporting surface.

2. The damping structure of the speed regulating switch according to claim 1, characterized in that: A mounting groove is provided at the outer side of the mounting portion, the mounting portion is configured as the bottom of the mounting groove, and the elastic member is arranged in the mounting groove; The speed regulating handle has a connecting portion, which passes through the bottom of the mounting groove and is connected to the toggle member through a fixing member. The elastic member is sleeved on the outer periphery of the connecting portion. After the fixing member is connected to the connecting portion, the elastic member is in an axially compressed state between the toggle member and the speed regulating handle.

3. The damping structure of the speed regulating switch according to claim 2, characterized in that: A wear-resistant part is provided on one side of the elastic part, and the wear-resistant part is sleeved on the outer periphery of the connecting part.

4. The damping structure of the speed regulating switch according to claim 3, characterized in that: One side of the wear-resistant part is a rough surface, and the other side is a smooth surface. The inner side of the speed regulating handle has a guide contact surface. The rough surface of the wear-resistant part contacts the surface of the elastic part, and the smooth surface of the wear-resistant part contacts the guide contact surface.

5. The damping structure of the speed regulating switch according to claim 2, characterized in that: A plurality of first positioning protrusions are disposed on the mounting surface, and a plurality of second positioning protrusions are disposed on the inner wall of the mounting groove. The first positioning protrusions support the side surfaces of the elastic member, and the second positioning protrusions support the peripheral surface of the elastic member.

6. The damping structure of the speed regulating switch according to any one of claims 1 to 4, characterized in that: A trigger is mounted on the housing, the trigger is hinged to the housing via a pin, and a reset torsion spring is sleeved on the pin; The trigger is provided with a linkage part and a pressing part, the pressing part is close to the trigger part of the speed regulating switch and conflicts with the trigger part, and the toggle member is provided with a toggle part, and the toggle part corresponds to the linkage part.

7. The damping structure of the speed regulating switch according to claim 6, characterized in that: The trigger part is elastic, and under the action of its own elastic force, the end surface of the trigger part always contacts with the pressing part.

8. The damping structure of the speed regulating switch according to any one of claims 1 to 4, characterized in that: The elastic member is a rubber ring.

9. The damping structure of the speed regulating switch according to any one of claims 1 to 4, characterized in that: The speed regulating switch is a stepless speed regulating switch.

10. A garden blower, characterized in that: A damping structure comprising a switch as claimed in any one of claims 1 to 9.

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