Trigger switch connecting structure and electric tool

Abstract

The utility model provides a trigger switch connecting structure and an electric tool, the trigger switch connecting structure comprises a housing, a trigger and an elastic sleeve, the housing is internally provided with a signal switch, and the housing is provided with a mounting hole; the trigger is located outside the shell, one end of the trigger is rotatably arranged on the shell, a trigger rod is arranged on the trigger, and the free end of the trigger rod can be movably inserted into the mounting hole in the pressing direction, so that the pressing position of the signal switch is pressed through the free end of the trigger rod; the elastic sleeve is located outside the shell and arranged on the trigger rod in a sleeving mode, and one end of the elastic sleeve abuts against the shell. An original main loop switch is replaced by the signal switch, the signal switch has the advantages of being small in size, low in cost and the like, the elastic sleeve and the trigger rod are arranged on the shell at the position of the trigger, on-off of the signal switch is achieved through the cooperation between the elastic sleeve and the trigger rod, and therefore the compact degree of the electric tool and the operation experience feeling of a user are improved.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of electric tools, and in particular to a trigger switch connection structure and an electric tool. Background Art

[0002] Power tools like angle grinders are driven by motors, which in turn drive accessories connected to the output terminals to work on the workpiece. Power tools often use a main circuit switch to control the motor's on and off. However, main circuit switches have drawbacks such as high cost and high current draw. Furthermore, the large size of the main circuit switch housing hinders the compact design of power tools. Utility Model Content

[0003] The purpose of the embodiments of the present utility model is to provide a trigger switch connection structure and an electric tool, aiming to solve the problems of the main circuit switch used in existing electric tools, such as high cost, large current, and large housing volume.

[0004] To solve the above technical problems, the embodiments of the present invention provide a trigger switch connection structure, comprising:

[0005] a housing, wherein a signal switch is disposed in the housing, and a mounting hole is provided through the housing, wherein the mounting hole and a pressing position of the signal switch are arranged opposite to each other in a pressing direction of the signal switch;

[0006] a trigger, the trigger being located outside the housing, one end of the trigger being rotatably disposed on the housing, the trigger being provided with a trigger rod, the trigger rod being located on a side of the trigger close to the housing, the free end of the trigger rod being movably inserted into the mounting hole along the pressing direction, so as to press the pressing position of the signal switch via the free end of the trigger rod;

[0007] An elastic sleeve is located outside the shell and is sleeved on the trigger rod. One end of the elastic sleeve abuts the shell, and the end of the elastic sleeve away from the shell abuts the trigger rod or the trigger.

[0008] Preferably, a rib is protruding from the inner shell wall of the shell, and the signal switch is arranged at the rib.

[0009] Preferably, the signal switch comprises:

[0010] A switch body, wherein the switch body is provided with switch contacts;

[0011] A switch spring, one end of which is arranged on the switch body, the switch spring is located on the side of the switch contact close to the trigger rod, the switch spring and the switch contact are arranged opposite to each other in the pressing direction, and the end of the trigger rod away from the switch body is the pressing position of the signal switch, so that when the trigger rod abuts against the switch spring, the switch contact is pressed by the switch spring.

[0012] Preferably, from an end of the switch elastic sheet close to the switch body to an end close to the trigger rod, the switch elastic sheet is gradually inclined toward the trigger rod.

[0013] Preferably, the switch contact and the trigger rod are staggered in the pressing direction.

[0014] Preferably, the trigger is provided with a trigger slot on the surface close to the shell in the pressing direction, the end of the trigger rod away from the shell is located in the trigger slot, and the end of the elastic sleeve away from the shell is located in the trigger slot.

[0015] Preferably, a limiting rib is protruding from the inner shell wall of the shell, and the limiting rib is arranged around the free end of the trigger rod, and the free end of the trigger rod extends into the limiting rib.

[0016] Preferably, the trigger switch connection structure further includes a sealing gasket, which is located outside the shell and sleeved on the trigger rod. An annular convex edge is provided at one end of the sealing gasket close to the shell, and the annular convex edge abuts and fits against the outer shell wall of the shell. An end of the sealing gasket away from the shell is located between the trigger rod and the elastic sleeve, and one end of the elastic sleeve abuts against the side of the annular convex edge away from the shell, so that the elastic sleeve abuts against the outer shell wall of the shell through the annular convex edge.

[0017] Preferably, an annular protrusion is provided on one end of the trigger rod away from the housing, and one end of the elastic sleeve away from the housing abuts against a side of the annular protrusion close to the housing.

[0018] In order to achieve the above-mentioned object, the present invention further provides an electric tool, comprising the above-mentioned trigger switch connection structure.

[0019] Compared with the existing technology, the utility model has the following beneficial effects: a signal switch is used to replace the original main circuit switch, the signal switch has the advantages of small size and low cost, and an elastic sleeve and a trigger rod are provided on the housing at the trigger. The signal switch is turned on and off through the cooperation between the elastic sleeve and the trigger rod, so as to improve the compactness of the power tool and the user's operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 This is a schematic structural diagram of an electric tool in an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the internal structure of the power tool;

[0023] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 Exploded view of the trigger.

[0025] Description of the accompanying drawings of this utility model:

[0026] Power tool 100, housing 1, mounting hole 11, rib position 12, limiting rib 13, mounting slot 14, signal switch 2, pressing position 21, switch body 22, switch contact 23, switch spring 24, trigger 3, trigger slot 31, grip portion 32, rotating shaft 33, limiting hook 34, trigger lever 4, annular protrusion 41, annular boss 42, elastic sleeve 5, sealing gasket 6, annular flange 61.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The utility model provides a trigger switch connection structure, which can be used in electric tools such as angle grinders. The following will take the use of the trigger switch connection structure in an angle grinder as an example for introduction. Figures 1 to 4 A preferred embodiment of the trigger switch connection structure provided by the present invention for use in an angle grinder is shown.

[0032] See also Figures 1 to 4 In this embodiment, the trigger switch connection structure includes a housing 1, a signal switch 2, a trigger 3, a trigger rod 4 and an elastic sleeve 5.

[0033] See also Figures 1 to 4 A signal switch 2 is provided in the housing 1 , and a mounting hole 11 is provided through the housing 1 . The mounting hole 11 and a pressing position 21 of the signal switch 2 are arranged opposite to each other in the pressing direction of the signal switch 2 .

[0034] Specifically, a mounting cavity is formed inside the housing 1, and electronic components such as a signal switch 2 are disposed within the mounting cavity of the housing 1. The signal switch 2 has a pressing position 21. When the pressing position 21 of the signal switch 2 is pressed, the signal switch 2 is turned on; when the pressing position 21 of the signal switch 2 is released, the signal switch 2 is turned off. The pressing direction of the signal switch 2 is defined below as from bottom to top. The signal switch 2 is disposed within the housing 1 with the pressing position 21 facing downward. A mounting hole 11 is disposed on the lower shell wall of the housing 1. The mounting hole 11 is connected to the mounting cavity of the housing 1 and is located directly below the pressing position 21 of the signal switch 2.

[0035] Main circuit switches are commonly used to control the opening and closing of circuits. They are essential components of electrical control systems, typically responsible for controlling high currents (tens to hundreds of amperes). Signal switches, on the other hand, are small devices used in electrical control systems. Their primary function is to change switch states, transmit signals, control logic, and perform counting. Signal switches offer advantages such as small size and low cost. Angle grinders are small, brushless power tools. Their most significant characteristic is their compact size, which places strict requirements on the size of their internal components. Therefore, signal switches can be used in place of main circuit switches.

[0036] The specific location of the signal switch 2 in the housing 1 can be set according to actual conditions. Figures 1 to 4 In this embodiment, a rib 12 is protruding from the inner wall of the housing 1, and the signal switch 2 is disposed at the rib 12. The rib 12 is provided on the inner wall of the housing 1 to support and fix the signal switch 2. This facilitates forming a relatively flat surface on the inner wall of the housing 1 to support and fix the signal switch 2.

[0037] See also Figures 1 to 4 The trigger 3 is located outside the housing 1, and one end of the trigger 3 can be rotatably set on the housing 1. A trigger rod 4 is provided on the trigger 3. The trigger rod 4 is located on the side of the trigger 3 close to the housing 1. The free end of the trigger rod 4 can be movably inserted into the mounting hole 11 along the pressing direction to press the pressing position 21 of the signal switch 2 through the free end of the trigger rod 4.

[0038] Specifically, one end of the trigger 3 in the longitudinal direction of the trigger 3 is rotatably mounted on the housing 1, and the rotation axis of the trigger 3 is parallel or approximately parallel to the width direction of the trigger 3. Hereinafter, the longitudinal direction of the trigger 3 is defined as the front-to-back direction, and the end of the trigger 3 that is rotatably connected to the housing 1 is defined as the rear end of the trigger 3.

[0039] A rotation connection structure is provided between the rear end of the trigger 3 and the housing 1, and the rear end of the trigger 3 is rotatably provided on the housing 1 through the rotation connection structure. The specific setting method of the rotation connection structure is not particularly limited. Figures 1 to 4 In this embodiment, the rotating connection structure includes a rotating shaft 33 and a rotating shaft hole (not shown in the figure). The rotating shaft hole is set on the shell 1, and the rotating shaft 33 extends along the width direction of the trigger 3. The rotating shaft 33 is set at the rear end of the trigger 3.

[0040] Optionally, see Figures 1 to 4 In this embodiment, a grip portion 32 is provided at one end of the trigger 3 away from the rotation connection structure. The grip portion 32 is used for the user to grip and rotate the trigger 3. The front end of the trigger 3 is provided with the grip portion 32. When the user grips and presses the grip portion 32 of the trigger 3, the trigger 3 can be driven to rotate toward the housing 1.

[0041] The trigger lever 4 extends vertically, i.e., is shaped like a long column. It is located above the trigger 3, with its lower end attached to the trigger 3, enabling the trigger 3 to move the trigger lever 4 up and down relative to the housing 1. The upper end of the trigger lever 4 is the free end, inserted into the mounting hole 11 of the housing 1. Consequently, when a user presses the grip 32 of the trigger 3 upward, the trigger 3 rotates toward the housing 1, driving the trigger lever 4 upward. This allows the upper end of the trigger lever 4 to extend into the housing 1 and depress the pressing position 21 of the signal switch 2, thereby turning the signal switch 2 on. When the trigger lever 4 moves downward, the trigger lever 4 disengages from the pressing position 21 of the signal switch 2, turning the signal switch 2 off. The trigger lever 4 can be secured to the trigger 3 by means of a snap-fit ​​or screw fastening, or it can be integrally formed with the trigger 3.

[0042] See also Figures 1 to 4 The elastic sleeve 5 is located outside the housing 1 and is sleeved on the trigger rod 4 . One end of the elastic sleeve 5 abuts the housing 1 , and the end of the elastic sleeve 5 away from the housing 1 abuts the trigger rod 4 or the trigger 3 .

[0043] Specifically, the elastic sleeve 5 may be a spring or rubber sleeve, etc., and is fitted over the trigger rod 4. The upper end of the elastic sleeve 5 abuts the outer wall of the housing 1, and the lower end of the elastic sleeve 5 abuts the trigger rod 4 or the trigger 3. When the user presses the trigger 3, the trigger 3 drives the trigger rod 4 upward, allowing the upper end of the trigger rod 4 to press the pressing position 21 of the signal switch 2, thereby turning the signal switch 2 on. At the same time, the elastic sleeve 5 is compressed. When the user releases the trigger 3, the elastic force of the elastic sleeve 5 causes the trigger rod 4 to move downward and disengage from the pressing position 21 of the signal switch 2, thereby turning the signal switch 2 off. At the same time, the trigger rod 4 drives the trigger 3 to rotate and reset.

[0044] The lower end of the elastic sleeve 5 can abut against the trigger 3, and the lower end of the elastic sleeve 5 can also abut against the trigger rod 4. Figures 1 to 4 In this embodiment, an annular protrusion 41 is provided at one end of the trigger rod 4 away from the housing 1 , and the end of the elastic sleeve 5 away from the housing 1 abuts against a side of the annular protrusion 41 close to the housing 1 .

[0045] Specifically, an annular protrusion 41 is provided on the upper end of the trigger rod 4, at the junction of the circumferential side surface and the lower end surface of the trigger rod 4. The lower surface of the annular protrusion 41 is flush with the lower end surface of the trigger rod 4. The elastic sleeve 5 is located above the annular protrusion 41, with the lower end of the elastic sleeve 5 abutting the upper surface of the annular protrusion 41.

[0046] Further, see Figures 1 to 4In this embodiment, an annular boss 42 is provided on the peripheral side surface of the trigger rod 4 near the trigger 3. The annular boss 42 is located on the side of the annular protrusion 41 near the shell 1. The end of the elastic sleeve 5 away from the shell 1 is sleeved on the annular boss 42, and the elastic sleeve 5 and the annular boss 42 form a snap fit.

[0047] Specifically, the annular boss 42 is located above the annular protrusion 41 and is provided at the junction of the circumferential side surface of the trigger lever 4 and the upper surface of the annular protrusion 41. The lower end of the elastic sleeve 5 and the annular protrusion 41 form an interference fit, thereby forming a snap fit between the lower end of the elastic sleeve 5 and the annular boss 42, thereby securing the elastic sleeve 5 to the trigger lever 4.

[0048] Since the stroke of the signal switch 2 is small and the switch elasticity of the signal switch 2 is also small, it has a great impact on the operating feel. An elastic sleeve 5 and a trigger rod 4 are added to the housing 1 at the trigger 3 (replacing the advantages of the main circuit switch). The signal switch 2 is turned on and off through the cooperation between the elastic sleeve 5 and the trigger rod 4, so as to improve the compactness of the power tool 100 and the user's operating experience.

[0049] The trigger switch connection structure uses a signal switch 2 in place of the main circuit switch. An elastic sleeve 5 and a long, cylindrical trigger rod 4 are installed on the housing 1 at the trigger 3. The trigger 3 acts on the trigger rod 4, causing it to move up and down, turning the signal switch 2 on and off. This facilitates the compactness of the trigger 3. The design of the signal switch 2 plus the long, cylindrical trigger rod 4 simplifies the switch structure, reduces costs, optimizes space, and enhances the layout.

[0050] The trigger switch connection structure of the present invention adopts a signal switch 2 to replace the original main circuit switch. The signal switch 2 has the advantages of small size and low cost. An elastic sleeve 5 and a trigger rod 4 are provided on the housing 1 at the trigger 3. The signal switch 2 is turned on and off through the cooperation between the elastic sleeve 5 and the trigger rod 4, so as to improve the compactness of the power tool 100 and the user's operating experience.

[0051] Optionally, see Figures 1 to 4 In this embodiment, a trigger groove 31 is provided on the surface of the trigger 3 close to the shell 1 in the pressing direction, the end of the trigger rod 4 away from the shell 1 is located in the trigger groove 31, and the end of the elastic sleeve 5 away from the shell 1 is located in the trigger groove 31.

[0052] Specifically, a trigger slot 31 is provided on the upper surface of the trigger 3 , and the lower end of the trigger rod 4 and the lower end of the elastic sleeve 5 are both located in the trigger slot 31 , which is conducive to the compactness of the trigger 3 .

[0053] Optionally, see Figures 1 to 4In this embodiment, the trigger switch connection structure further includes a sealing gasket 6, which is located outside the housing 1 and sleeved on the trigger rod 4. An annular convex edge 61 is provided at one end of the sealing gasket 6 close to the housing 1, and the annular convex edge 61 abuts and fits against the outer wall of the housing 1. An end of the sealing gasket 6 away from the housing 1 is located between the trigger rod 4 and the elastic sleeve 5, and one end of the elastic sleeve 5 abuts against the side of the annular convex edge 61 away from the housing 1, so that the elastic sleeve 5 abuts against the outer wall of the housing 1 through the annular convex edge 61.

[0054] Specifically, the sealing gasket 6 can be a rubber pad, etc., and is mounted on the upper end of the trigger rod 4. The trigger rod 4 is arranged to be movable up and down relative to the sealing gasket 6. The lower end of the sealing gasket 6 is located between the trigger rod 4 and the elastic sleeve 5, and the upper end of the sealing gasket 6 is located above the elastic sleeve 5. The outer diameter of the upper end of the sealing gasket 6 is larger than that of the lower end, thereby forming an annular flange 61 at the junction of the upper end surface and the outer peripheral surface of the sealing gasket 6. The upper end of the elastic sleeve 5 abuts the lower surface of the annular flange 61, so that the sealing gasket 6 abuts and fits against the outer wall of the housing 1 through the annular flange 61.

[0055] When the user does not press the trigger 3, the upper end surface of the sealing gasket 6 abuts against the outer wall of the housing 1, allowing the sealing gasket 6 to seal the mounting hole 11 of the housing 1. When the user presses the trigger 3, the sealing gasket 6 is squeezed in the direction of the trigger 3, causing the sealing gasket 6 to deform horizontally. This increases the contact area between the sealing gasket 6 and the outer wall of the housing 1, reduces the space between the interior of the housing 1 and the outside world, and improves the sealing of the mounting hole 11 of the housing 1, thereby reducing the probability of dust entering the interior of the housing 1 and preventing dust from damaging the electronic components inside the housing 1.

[0056] Optionally, see Figures 1 to 4 In this embodiment, a limiting rib 13 is protruded from the inner shell wall of the shell 1 . The limiting rib 13 is arranged around the free end of the trigger rod 4 , and the free end of the trigger rod 4 extends into the limiting rib 13 .

[0057] Specifically, the lower end of the trigger rod 4 abuts against the inner side of the trigger 3, and the upper end of the trigger rod 4 is fixed in the limiting rib 13 of the housing 1 through the elastic sleeve 5 and the sealing gasket 6. The trigger rod 4 can move up and down under the pressure of the trigger 3.

[0058] Optionally, see Figures 1 to 4 In this embodiment, a mounting groove 14 is provided on the outer shell wall of the shell 1, the trigger 3 can be rotatably arranged at the mounting groove 14, the mounting hole 11 is provided on the bottom wall of the mounting groove 14, and the end of the sealing gasket 6 away from the trigger 3 abuts against the bottom wall of the mounting groove 14.

[0059] Specifically, the lower wall of the housing 1 is provided with a mounting slot 14 with a notch facing downward. The shape of the mounting slot 14 generally matches the shape of the trigger 3. When the user is not pressing the trigger 3, at least a portion of the grip portion 32 of the trigger 3 extends out of the notch and out of the mounting slot 14, making it easier for the user to press the grip portion 32 of the trigger 3.

[0060] The trigger rod 4 is arranged on the trigger 3, and the specific location of the trigger rod 4 on the trigger 3 can be set according to the actual situation. Figures 1 to 4 In this embodiment, the trigger lever 4 is disposed on the grip portion 32 .

[0061] Specifically, positioning the trigger lever 4 on the grip 32 facilitates transmitting the pressing force applied to the trigger 3 to the trigger lever 4. A limit hook 34 is provided on the trigger 3, and a snap groove (not shown) is provided in the housing 1. When the user is not pressing the trigger 3, the limit hook 34 engages with the snap groove to retain the trigger 3 in its initial position. The limit hook 34 is located in front of the rotating shaft 33, and the trigger lever 4 is located in front of the limit hook 34.

[0062] The specific style of the signal switch 2 can be set according to the actual situation. Figures 1 to 4 In this embodiment, the signal switch 2 includes a switch body 22 and a switch spring 24. The switch body 22 is provided with a switch contact 23. One end of the switch spring 24 is provided on the switch body 22. The switch spring 24 is located on the side of the switch contact 23 close to the trigger rod 4. The switch spring 24 and the switch contact 23 are arranged opposite to each other in the pressing direction. The end of the trigger rod 4 away from the switch body 22 is the pressing position 21 of the signal switch 2. When the trigger rod 4 abuts against the switch spring 24, the switch contact 23 is pressed by the switch spring 24.

[0063] Specifically, the lower end of the switch body 22 is provided with a downward-facing switch contact 23. When the switch contact 23 is pressed upward, the switch body 22 is switched on; when the switch contact 23 is released, the switch body 22 is switched off. The rear end of the switch spring 24 is fixedly connected to the lower end of the switch body 22, while the front end of the switch spring 24 is suspended in the air, forming the pressing position 21 of the signal switch 2. As the trigger lever 4 moves upward, the upper end of the trigger lever 4 abuts the front end of the switch spring 24, causing the suspended portion of the switch spring 24 to bend upward, allowing the switch spring 24 to press against the switch contact 23 of the switch body 22. As the trigger lever 4 moves downward, the trigger lever 4 disengages from the switch spring 24, and the bent switch spring 24 automatically returns to its original position, disengaging the switch spring 24 from the switch contact 23 of the switch body 22, thereby releasing the switch contact 23. By providing the switch spring 24 on the signal switch 2 , the travel of the signal switch 2 can be increased.

[0064] Further, see Figures 1 to 4 In this embodiment, the switch spring 24 is gradually tilted toward the trigger rod 4 from the end of the switch spring 24 close to the switch body 22 to the end close to the trigger rod 4. The switch spring 24 is gradually tilted downward from the back to the front, which can further increase the travel of the signal switch 2.

[0065] The switch contact 23 is located on the upper side of the switch spring 24. The switch contact 23 can be opposite to the trigger rod 4 in the vertical direction, or the switch contact 23 can be staggered with the trigger rod 4 in the vertical direction (i.e., the switch contact 23 is located in front of or behind the trigger rod 4). Figures 1 to 4 In this embodiment, the switch contact 23 and the trigger rod 4 are staggered in the pressing direction.

[0066] Specifically, the switch contact 23 and the trigger rod 4 are staggered in the upper and lower directions, that is, the switch contact 23 and the pressing position 21 of the signal switch 2 are staggered in the upper and lower directions. The switch contact 23 is located behind the pressing position 21 of the signal switch 2 and the trigger rod 4, and the switch contact 23 is opposite to the middle part of the switch spring 24 in the upper and lower directions.

[0067] The utility model further provides an electric tool, which includes a trigger switch connection structure. Since the trigger switch connection structure adopts the technical solution of the above embodiment, it has the beneficial effects brought by the technical solution of the above embodiment.

[0068] Optionally, in this embodiment, the power tool is a brushless DC power tool. For example, the power tool may be a small brushless DC power tool such as an angle grinder.

[0069] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A trigger switch connection structure, characterized in that: include: a housing, wherein a signal switch is disposed in the housing, and a mounting hole is provided through the housing, wherein the mounting hole and a pressing position of the signal switch are arranged opposite to each other in a pressing direction of the signal switch; a trigger, the trigger being located outside the housing, one end of the trigger being rotatably disposed on the housing, the trigger being provided with a trigger rod, the trigger rod being located on a side of the trigger close to the housing, the free end of the trigger rod being movably inserted into the mounting hole along the pressing direction, so as to press the pressing position of the signal switch via the free end of the trigger rod; An elastic sleeve is located outside the shell and sleeved on the trigger rod, and one end of the elastic sleeve abuts against the shell.

2. The trigger switch connection structure according to claim 1, wherein: A rib is protruding from the inner shell wall of the shell, and the signal switch is arranged at the rib.

3. The trigger switch connection structure according to claim 1, wherein: The signal switch comprises: A switch body, wherein the switch body is provided with switch contacts; A switch spring, one end of which is arranged on the switch body, the switch spring is located on the side of the switch contact close to the trigger rod, the switch spring and the switch contact are arranged opposite to each other in the pressing direction, and the end of the trigger rod away from the switch body is the pressing position of the signal switch, so that when the trigger rod abuts against the switch spring, the switch contact is pressed by the switch spring.

4. The trigger switch connection structure according to claim 3, wherein: From an end of the switch spring close to the switch body to an end close to the trigger rod, the switch spring is gradually inclined toward the trigger rod.

5. The trigger switch connection structure according to claim 3, wherein: The switch contact and the trigger rod are staggered in the pressing direction.

6. The trigger switch connection structure according to claim 1, wherein: The trigger is provided with a trigger slot on the surface close to the shell in the pressing direction, the end of the trigger rod away from the shell is located in the trigger slot, and the end of the elastic sleeve away from the shell is located in the trigger slot.

7. The trigger switch connection structure according to claim 1, wherein: A limiting rib is protruded from the inner shell wall of the shell. The limiting rib is arranged around the free end of the trigger rod, and the free end of the trigger rod extends into the limiting rib.

8. The trigger switch connection structure according to claim 1, wherein: The trigger switch connection structure also includes a sealing gasket, which is located outside the shell and sleeved on the trigger rod. The sealing gasket is provided with an annular convex edge at one end close to the shell, and the annular convex edge abuts and fits against the outer shell wall of the shell. The end of the sealing gasket away from the shell is located between the trigger rod and the elastic sleeve, and one end of the elastic sleeve abuts against the side of the annular convex edge away from the shell, so that the elastic sleeve abuts against the outer shell wall of the shell through the annular convex edge.

9. The trigger switch connection structure according to claim 1, wherein: An annular protrusion is provided on one end of the trigger rod away from the housing, and an end of the elastic sleeve away from the housing abuts against a side of the annular protrusion close to the housing.

10. An electric tool, characterized in that: It comprises the trigger switch connection structure according to any one of claims 1 to 9.

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