Gear shift switch structure for hammer drill

Abstract

A gear shifting switch structure for hammer drill, including front shell and rear shell, the rear shell side wall is equipped with multiple rotation grooves, inside is equipped with gear shifting switch assembly, the gear shifting switch assembly includes switch and rotation switch, the switch is rotated with front shell, and is relatively axially slidingly connected between switch and rotation switch, the rotation switch is at least partially arranged in rotation groove, and the switch is driven to rotate around the axis of front shell in the limited range of rotation groove, so that the hammer drill switches the working mode; the gear shifting switch structure is compact and reasonable in design, the rotation switch can slide axially relative to the switch, and the switch can be driven to rotate around the axis of front shell in the limited range of rotation groove through the rotation switch, so that the hammer drill switches the working mode, the adaptability is high, and the influence of the axial movement of the rear shell on switch contact is avoided.

Description

Technical Field

[0001] This utility model relates to a shift switch structure for use in a hammer drill. Background Technology

[0002] Hammer drills are commonly used impact tools. The various mechanisms inside the hammer drill are installed inside the housing. When using a hammer drill, it is operated by holding the handle on the back of the housing. The force is applied by holding the handle and aligning the drill rod inside the hammer drill against the work area.

[0003] In existing hammer drills, the handle and housing are fixedly connected and cannot move relative to each other. The mechanical vibrations generated when the drill rod rotates at high speed are directly transmitted to the handle through the rigidly connected housing, causing discomfort to the user and potentially affecting the operator's health with prolonged use. To address this technical problem, the applicant proposed in a prior patent application (application number: 202520132811.0) that "the front and rear housings are axially slidably connected, with a movable gap between them, and a shock-absorbing device is provided at the movable gap between the front and rear housings." This structure effectively reduces the vibration acting on the handle during drill rod use and operation, improving operator comfort and mitigating adverse effects. However, traditional shift switches are usually based on a one-piece housing design, which is unsuitable for the structure proposed by the applicant, easily leading to poor contact at the switch contacts. Therefore, the existing technology still needs improvement and development. Summary of the Invention

[0004] To address the shortcomings mentioned above, this utility model provides a shift switch structure for hammer drills.

[0005] To achieve the above objectives, this utility model provides a shift switch structure for a hammer drill, including a front housing and a rear housing. The rear housing has multiple rotating grooves on its side wall and a shift switch assembly inside. The shift switch assembly includes a switching switch and a rotary switch. The switching switch is rotatably engaged with the front housing and can be axially slidably connected to the rotary switch. The rotary switch is at least partially located in the rotating groove and can drive the switching switch to rotate around the axis of the front housing within the range defined by the rotating groove, so as to switch the working mode of the hammer drill.

[0006] Furthermore, the side wall of the switch is provided with multiple sliding grooves, and a limiting part is provided at one end of the sliding groove near the rotary switch. The rotary switch is provided with an elastic buckle that slides and cooperates with the sliding groove. The elastic buckle cooperates with the limiting part to prevent the rotary switch from disengaging from the switch when it slides.

[0007] Furthermore, the groove has a protrusion along the axial direction, and the rotary switch has a groove corresponding to the protrusion. The groove and the protrusion cooperate to restrict the rotary switch from sliding along the protrusion.

[0008] Furthermore, the rotary switch has an abutment portion on its side wall, and the switching switch has a limiting portion two corresponding to the abutment portion. The limiting portion two cooperates with the abutment portion so that the rotary switch can drive the switching switch to rotate around the axis of the front housing.

[0009] Furthermore, the switch is provided with at least two mounting portions, and each mounting portion contains a conversion connector.

[0010] Furthermore, the rotary switch includes a rotating frame and multiple rotary keys that are engaged on the rotating frame. Each rotary key corresponds to a rotating groove and extends through the rotating groove.

[0011] Furthermore, the front housing is provided with a housing connection part, the housing connection part is provided with multiple mounting slots, the switch is provided with a rotating part corresponding to the mounting slot, the rotating part passes through the mounting slot into the housing connection part and rotates with the housing connection part.

[0012] Furthermore, there are two rotating grooves, which are symmetrically arranged on both sides of the rear housing. The rear housing includes a rear housing one and a rear housing two that are detachably and fixedly connected. A symmetrical folded edge one is provided on one side wall of the rear housing, and a symmetrical folded edge two is provided on the side wall of the rear housing two. The folded edge one and the folded edge two enclose each other to form a rotating groove.

[0013] The advantages of this utility model over the prior art are as follows: The shift switch structure provided by this utility model is compact and reasonable. While the rotating switch can slide axially relative to the switching switch, it can also drive the switching switch to rotate around the axis of the front housing within the limited range of the rotating groove, so that the hammer drill can switch working modes. It has high adaptability and avoids the influence of the axial movement of the rear housing on the contact of the switch contacts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a shift switch structure for a hammer drill according to the present invention;

[0015] Figure 2 This is a 3D view of the shift switch assembly involved in this solution;

[0016] Figure 3 This is a perspective view of the front housing involved in this solution. Detailed Implementation

[0017] like Figure 1 , Figure 2 and Figure 3As shown in the figure, a shift switch structure for a hammer drill according to an embodiment of the present invention includes a front housing 100 and a rear housing 200. The rear housing 200 has a plurality of rotating grooves 201 on its side wall and a shift switch assembly 300 inside. The shift switch assembly 300 includes a switching switch 310 and a rotary switch 320. The switching switch 310 is rotatably engaged with the front housing 100 and can be axially slidably connected to the rotary switch 320. The rotary switch 320 is at least partially disposed in the rotating grooves 201 and can drive the switching switch 310 to rotate around the axis of the front housing 100 within the range defined by the rotating grooves 201, so as to switch the working mode of the hammer drill. It has high adaptability and avoids the influence of the axial movement of the rear housing 200 on the contact of the switch contacts.

[0018] Furthermore, such as Figure 2 As shown, in this embodiment, the switch 310 has multiple grooves 311 on its side wall and a limiting part 312 is provided at one end of the groove 311 near the rotary switch 320. The rotary switch 320 is provided with an elastic buckle 321 that slides with the groove 311. During installation, the elastic buckle 321 on the rotary switch 320 is forcibly installed into the groove 311. The elastic buckle 321 can slide in the groove 311, and the elastic buckle 321 cooperates with the limiting part 312 to prevent the rotary switch 320 from disengaging from the switch 310 when it slides.

[0019] Furthermore, such as Figure 2 As shown, in this embodiment, the slide groove 311 has a protrusion 313 along the axial direction, and the rotary switch 320 has a groove 322 corresponding to the protrusion 313. The groove 322 and the protrusion 313 cooperate to restrict the rotary switch 320 from sliding along the protrusion 313.

[0020] Furthermore, such as Figure 1 , Figure 2 As shown, in this embodiment, the rotary switch 320 has an abutment portion 323 on its side wall, and the switching switch 310 has a limiting portion 314 corresponding to the abutment portion 323. The limiting portion 314 cooperates with the abutment portion 323 so that the rotary switch 320 can drive the switching switch 310 to rotate around the axis of the front housing 100. The rotary switch 320 includes a rotating frame 320-1 and a plurality of rotary keys 320-2 that are locked on the rotating frame 320-1. The rotary keys 320-2 correspond one-to-one with the rotating groove 201 and pass through the rotating groove 201. The user can drive the switching switch 310 to rotate forward or backward around the axis of the front housing 100 within the range limited by the rotating groove 201 by using the rotary keys 320-2.

[0021] Furthermore, such as Figure 2 As shown, the switching switch 310 in this embodiment is provided with at least two mounting parts 315, and the mounting part 315 is provided with a conversion connector 1. The conversion connector 1 is used to connect with the power structure of each working mode of the hammer drill.

[0022] Furthermore, such as Figures 1-3 As shown, in this embodiment, the front housing 100 is provided with a housing connection portion 110, and the housing connection portion 110 is provided with a plurality of mounting grooves 111. The switch 310 and the rotary switch 320 are sleeved on the housing connection portion 110, and the switch 310 is provided with a rotating portion 316 corresponding to the mounting groove 111. The rotating portion 316 passes through the mounting groove 111 and enters the housing connection portion 110. When the key 320-2 rotates within the range limited by the rotating groove 201, the rotating portion 316 maintains rotational engagement with the housing connection portion 110.

[0023] Furthermore, such as Figure 1 As shown, in this embodiment, there are two rotating grooves 201, which are symmetrically arranged on both sides of the rear housing 200. The rear housing 200 includes a detachably fixed rear housing 210 and a rear housing 220. The rear housing 210 has symmetrical folded edges 211 on its side wall, and the rear housing 220 has symmetrical folded edges 221 on its side wall. The folded edges 211 and 221 enclose to form the rotating groove 201. Preferably, the rear housing 210 and the rear housing 220 are fixedly connected by bolts to facilitate the installation of the key 320-2.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shift switch structure for a hammer drill, comprising a front housing (100) and a rear housing (200), characterized in that: The rear housing (200) has multiple rotating grooves (201) on its side wall and a shift switch assembly (300) inside. The shift switch assembly (300) includes a switching switch (310) and a rotary switch (320). The switching switch (310) is rotatably engaged with the front housing (100) and can be axially slidably connected with the rotary switch (320). The rotary switch (320) is at least partially located in the rotating groove (201) and can drive the switching switch (310) to rotate around the axis of the front housing (100) within the range defined by the rotating groove (201) so that the hammer drill can switch working modes.

2. The shift switch structure for a hammer drill according to claim 1, characterized in that: The switch (310) has multiple grooves (311) on its side wall and a limiting part (312) is provided at one end of the groove (311) near the rotary switch (320). The rotary switch (320) is provided with an elastic buckle (321) that slides with the groove (311). The elastic buckle (321) cooperates with the limiting part (312) to prevent the rotary switch (320) from disengaging from the switch (310) when it slides.

3. The shift switch structure for a hammer drill according to claim 2, characterized in that: The groove (311) has a protrusion (313) along the axial direction, and the rotary switch (320) has a groove (322) corresponding to the protrusion (313). The groove (322) and the protrusion (313) cooperate to restrict the rotary switch (320) from sliding along the protrusion (313).

4. The shift switch structure for a hammer drill according to claim 1, characterized in that: The rotary switch (320) has an abutment part (323) on its side wall, and the switching switch (310) has a limiting part (314) corresponding to the abutment part (323). The limiting part (314) cooperates with the abutment part (323) so that the rotary switch (320) can drive the switching switch (310) to rotate around the axis of the front housing (100).

5. A shift switch structure for a hammer drill according to claim 4, characterized in that: The switch (310) is provided with at least two mounting parts (315), and the mounting parts (315) are provided with conversion connectors (1).

6. The shift switch structure for a hammer drill according to claim 4, characterized in that: The rotary switch (320) includes a rotating frame (320-1) and multiple rotary keys (320-2) that are locked on the rotating frame (320-1). The rotary keys (320-2) correspond one-to-one with the rotating groove (201) and pass through the rotating groove (201).

7. A shift switch structure for a hammer drill according to any one of claims 1 to 6, characterized in that: The front housing (100) is provided with a housing connection part (110), and the housing connection part (110) is provided with a plurality of mounting slots (111). The switch (310) is provided with a rotating part (316) corresponding to the mounting slot (111). The rotating part (316) passes through the mounting slot (111) into the housing connection part (110) and rotates with the housing connection part (110).

8. A shift switch structure for a hammer drill according to any one of claims 1 to 6, characterized in that: There are two rotating grooves (201) symmetrically arranged on both sides of the rear housing (200). The rear housing (200) includes a detachably fixed rear housing one (210) and a rear housing two (220). The side wall of the rear housing one (210) is provided with a symmetrical folded edge one (211), and the side wall of the rear housing two (220) is provided with a symmetrical folded edge two (221). The folded edge one (211) and the folded edge two (221) enclose and form the rotating groove (201).

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