Clutch structure on electric tool

Abstract

The utility model discloses a clutch structure on an electric tool, which comprises an output shaft, a gear I and a gear II, the gear I and the gear II are arranged on the output shaft, a clutch mechanism is arranged on the output shaft between the gear I and the gear II, and the clutch mechanism comprises a clutch block arranged on the output shaft. The clutch block is provided with a first plug pin piece and a second plug pin piece, the first plug pin piece can be inserted into the first gear, the second plug pin piece can be inserted into the second gear, the first gear is provided with a first inserting groove matched with the first plug pin piece, the second gear is provided with a second inserting groove matched with the second plug pin piece, and the first inserting groove is matched with the second inserting groove. The clutch block moves back and forth on the output shaft so that the clutch block can be fixedly connected with the first gear or the second gear. The gear shifting device is more reasonable in design, damage to equipment in the gear shifting process in the starting-up state is reduced, and the service life of the equipment is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment on electric tools, in particular to a clutch structure on an electric tool. Background Art

[0002] In the field of electric tools, especially in the case of electric hammers, electric drills and impact drills, it is often necessary to switch the operating mode of the electric tool (shift gears) or disengage the transmission system of the electric tool without outputting torque during the processing. In these operating processes, it is necessary to drive the corresponding gear to slide on the transmission shaft through the clutch to adjust the meshing and disengagement relationship between the corresponding gear and the transmission shaft, so as to achieve the switching function of the operating mode of the electric tool. For example, in the prior art, the transmission of torque depends on the end face teeth of the gears. When shifting gears, it is necessary to stop the machine and rotate the output shaft while rotating the shift knob. The gear shift can only be completed after the end face teeth of the gears are engaged. In the power-on state, because the end face teeth of the two gears are rigid and cannot be stretched, forced shifting will cause damage to the end face teeth of the gears. Therefore, in order to improve this situation, it is necessary to improve the prior art. Utility Model Content

[0003] 1. Technical issues that need to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a clutch structure on an electric tool, which has a more reasonable design and is conducive to reducing damage to the equipment during gear shifting when the power is on, thereby greatly improving the service life of the equipment.

[0005] (II) Technical solutions that need to be adopted

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A clutch structure on an electric tool comprises an output shaft and gear 1 and gear 2 arranged on the output shaft, a clutch mechanism is arranged on the output shaft between gear 1 and gear 2, the clutch mechanism comprises a clutch block arranged on the output shaft, a latch member 1 and a latch member 2 are arranged on the clutch block, the latch member 1 can be inserted into the gear 1, the latch member 2 can be inserted into the gear 2, a slot 1 is arranged on the gear 1 to match the latch member 1, and a slot 2 is arranged on the gear 2 to match the latch member 2, and the clutch block is fixedly connected to the gear 1 or the gear 2 by moving back and forth on the output shaft.

[0008] Preferably, a spline portion is provided on the output shaft, the gear one is located on one end of the output shaft, and the gear two is located on the spline portion of the output shaft, and the clutch block is located on the spline portion between the gear one and the gear two and moves back and forth.

[0009] Preferably, a groove is provided on the circumference of the clutch block for driving the clutch block to slide back and forth on the spline portion, and the groove is used to be connected to a button mechanism.

[0010] Preferably, the button mechanism includes a shell arranged on the output shaft, the output shaft passes through the shell, the gear one, gear two and the clutch mechanism are all located inside the shell, and a fixed shaft is distributed inside the shell parallel to the output shaft, a slide plate which moves back and forth along the fixed shaft is provided on the fixed shaft, an elastic sheet is provided on the slide plate, a knob is provided on the slide plate, a connecting shaft is provided on the knob, the connecting shaft is located on the slide plate, and the other end of the slide plate is located in the groove of the clutch block.

[0011] Preferably, a mating rotating mechanism parallel to the output shaft is arranged inside the shell, and the mating rotating mechanism includes a seat body arranged inside the shell, and the seat body is provided with a first rotating gear and a second rotating gear mating with gear one and gear two, and the first rotating gear and the second rotating gear are coaxially distributed.

[0012] Preferably, it further comprises a positioning pin arranged on the clutch block, wherein the positioning pin passes through the clutch block.

[0013] Preferably, the latch member 1 includes a pin shaft 1 arranged on the clutch block, a spring 1 is arranged between the pin shaft 1 and the clutch block, and the pin shaft 1 extends toward the gear 1, and a pin sleeve 1 is arranged between the spring 1 and the clutch block.

[0014] Preferably, a sleeve 1 is provided on the pin shaft 1.

[0015] Preferably, the second latch member comprises a second pin shaft arranged on the clutch block, a second spring is arranged between the second pin shaft and the clutch block, and the second pin shaft extends toward the second gear, and a second pin sleeve is arranged between the second spring and the clutch block.

[0016] Preferably, a second sleeve is provided on the second pin shaft.

[0017] (III) Technical effects to be achieved

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Firstly, a clutch mechanism is arranged on the output shaft between gear one and gear two of the utility model, and the clutch mechanism comprises a clutch block arranged on the output shaft, and a latch member one and a latch member two are arranged on the clutch block, the latch member one can be inserted into gear one, and the latch member two can be inserted into gear two, a slot one matched with the latch member one is arranged on gear one, and a slot two matched with the latch member two is arranged on gear two, and the clutch block is fixedly connected with gear one or gear two by moving back and forth on the output shaft, and its design is more reasonable, which is conducive to reducing the damage of the equipment during the gear shifting process when the machine is turned on, and greatly improves the service life of the equipment.

[0020] Secondly, a spline portion is provided on the output shaft of the utility model, gear one is located on one end of the output shaft, gear two is located on the spline portion of the output shaft, and the clutch block is located on the spline portion between gear one and gear two and moves back and forth. This design is reasonable, simple in structure, easy to manufacture and install, and is also conducive to achieving better coordination between the clutch block and gear one or gear two. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the main viewing direction of the utility model.

[0023] Figure 3 for Figure 2 Section view along AA direction.

[0024] Figure 4 The utility model is a schematic diagram of the button mechanism structure.

[0025] Figure 5 The utility model is an overall schematic diagram of a button mechanism.

[0026] Figure 6 The utility model is a schematic diagram of the internal structure of the button mechanism.

[0027] Figure 7 It is an explosion diagram of the clutch mechanism of the utility model.

[0028] Figure 8 It is an overall schematic diagram of the clutch mechanism of the utility model.

[0029] In the figure: 1, output shaft; 2, gear one; 3, gear two; 4, clutch mechanism; 5, button mechanism; 6, positioning pin; 11, spline portion; 41, clutch block; 42, latch piece one; 43, latch piece two; 44, slot one; 45, slot two; 46, groove; 51, housing; 52, fixed shaft; 53, slide plate; 54, elastic sheet; 55, knob; 56, connecting shaft; 57, matching rotating mechanism; 421, pin shaft one; 422, spring one; 423, pin sleeve one; 431, pin shaft two; 432, spring two; 433, pin sleeve two; 434, outer sleeve two; 571, seat body; 572, first rotating gear; 573, second rotating gear. DETAILED DESCRIPTION

[0030] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0034] Example 1: See Figure 1 A clutch structure on an electric tool comprises an output shaft 1 and a gear 1 2 and a gear 2 3 arranged on the output shaft 1. A clutch mechanism 4 is arranged on the output shaft 1 between the gear 1 2 and the gear 2 3. The clutch mechanism 4 comprises a clutch block 41 arranged on the output shaft 1. A latch member 1 42 and a latch member 2 43 are arranged on the clutch block 41. The latch member 1 42 can be inserted into the gear 1 2, and the latch member 2 43 can be inserted into the gear 2 3. A slot 1 44 matching with the latch member 1 42 is arranged on the gear 1 2, and a slot 2 45 matching with the latch member 2 43 is arranged on the gear 2 3. The clutch block 41 moves back and forth on the output shaft 1 to achieve fixed connection with the gear 1 2 or the gear 2 3, which is beneficial to reducing damage to the equipment during gear shifting in the power-on state and greatly improving the service life of the equipment.

[0035] Embodiment 2: It can be explained on the basis of embodiment 1, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a spline portion 11 is provided on the output shaft 1, gear 1 2 is located on one end of the output shaft 1, and gear 2 3 is located on the spline portion 11 of the output shaft 1, and the clutch block 41 is located on the spline portion 11 between gear 1 2 and gear 2 3 and moves back and forth. This is conducive to realizing the clutch block 41 moving back and forth on the spline portion 11 and being fixedly connected with gear 1 2 or gear 2 3, which is conducive to reducing the damage to the equipment during the gear shifting process in the startup state, and greatly improving the service life of the equipment.

[0036] I want to explain that Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a groove 46 is provided on the circumference of the clutch block 41 for driving the clutch block 41 to slide back and forth on the spline portion 11. The groove 46 is used to connect with the button mechanism 5. The clutch block 41 slides back and forth on the spline portion 11 by clockwise and counterclockwise rotation of the button mechanism 5, and then the clutch block 41 is connected to the corresponding gear 1 2 and gear 2 3 through the latch member 1 42 or the latch member 2 43. Among them, the button mechanism 5 includes a shell 51 arranged on the output shaft 1, the output shaft 1 passes through the shell 51, the gear 1 2, the gear 2 3 and the clutch mechanism 4 are all located inside the shell 51, and a fixed shaft 52 is distributed inside the shell 51 in parallel with the output shaft 1, and a slide plate 53 is arranged on the fixed shaft 52 for slightly moving back and forth along the fixed shaft 52, an elastic sheet 54 is arranged on the slide plate 53, a knob 55 is arranged on the slide plate 53, and a connecting shaft 56 is arranged on the knob 55, and the connecting shaft 56 is located on the slide plate 53, and the other end of the slide plate 53 is located in the groove 46 of the clutch block 41. After the knob 55 is rotated, the connecting shaft 56 is driven to slightly move back and forth along the fixed shaft 52 on the slide plate 53, and then the fixed shaft 52 drives the clutch block 41 to slide back and forth on the spline portion 11, and finally the clutch block 41 slides back and forth on the spline portion 11, and then the clutch block 41 is connected to the corresponding gear 1 2 and gear 2 3 through the latch member 1 42 or the latch member 2 43. It should also be noted that a mating rotating mechanism 57 parallel to the output shaft 1 is provided inside the shell 51, and the mating rotating mechanism 57 includes a seat body 571 arranged inside the shell 51, and a first rotating gear 572 and a second rotating gear 573 mating with gear 1 2 and gear 2 3 are provided on the seat body 571. The first rotating gear 572 and the second rotating gear 573 are coaxially distributed. This arrangement is reasonable and easy to implement.

[0037] Embodiment 3: It can be described on the basis of Embodiment 1 or Embodiment 2, such as Figure 2 , Figure 7 and Figure 8 As shown, it also includes a positioning pin 6 set on the clutch block 41. The positioning pin 6 passes through the clutch block 41. In this embodiment, the positioning pins 6 are distributed in pairs, that is, there are two positioning pins 6. The two positioning pins 6 are distributed on the clutch block 41 with the output shaft 1 as the center. The positioning pin 6 is beneficial to prevent the clutch block 41 and the corresponding clutch block 41 from sticking together.

[0038] Embodiment 4: It can be described on the basis of Embodiment 1, Embodiment 2 or Embodiment 3, such as Figure 3 , Figure 7 and Figure 8As shown, the latch member 42 includes a pin shaft 421 disposed on the clutch block 41, a spring 422 is disposed between the pin shaft 421 and the clutch block 41, and the pin shaft 421 extends toward the gear 2, and a pin sleeve 423 is disposed between the spring 422 and the clutch block 41, which is conducive to the matching of the pin shaft 421 with the slot 44, so as to achieve the connection between the clutch block 41 and the gear 2. It is to be noted that a jacket 424 is disposed on the pin shaft 421, and the jacket 424 is used to resist one end of the spring 422, and in this embodiment, the jacket 424 and the pin shaft 421 are integrally formed, and this arrangement is conducive to the compression of the spring 422. It is also to be noted that in this embodiment, two latch members 42 are used, and in this embodiment, four slots 44 are used, and this arrangement is conducive to the two latch members 42 being able to better match with the slot 44 on the clutch block 41. The pin shaft 421 can be supported by a spring 422. When the pin shaft 421 and the slot 44 (or the socket 1) are not aligned during gear shifting, the pin shaft 421 will retract into the clutch block 41. When the clutch block 41 is rotated, the pin shaft 421 will be aligned with the slot 44 (or the socket 1) of the gear 2, and the spring 422 will push out the pin shaft 421 to complete the connection between the clutch block 41 and the gear 2.

[0039] like Figure 3 , Figure 7 and Figure 8 As shown, the second latch member 43 includes a second pin shaft 431 disposed on the clutch block 41, a second spring 432 is disposed between the second pin shaft 431 and the clutch block 41, and the second pin shaft 431 extends toward the second gear 3, and a second pin sleeve 433 is disposed between the second spring 432 and the clutch block 41, which is conducive to the matching of the second pin shaft 431 with the second slot 45, so as to achieve the connection between the clutch block 41 and the second gear 3. It is to be noted that a second outer sleeve 434 is disposed on the second pin shaft 431, and the second outer sleeve 434 is used to resist one end of the second spring 432, and in this embodiment, the second outer sleeve 434 and the second pin shaft 431 are integrally formed, and this arrangement is conducive to the compression of the second spring 432. It is also to be noted that in this embodiment, two second latch members 43 are used, and in this embodiment, four second slots 45 are used, and this arrangement is conducive to the two second latch members 43 being able to better match with the second slot 45 on the clutch block 41. The second spring 432 can support the second pin 431. When the second pin 431 and the second slot 45 (which can also be the second socket) are not aligned during gear shifting, the second pin 431 will retract into the clutch block 41. When the clutch block 41 is rotated, the second pin 431 will be aligned with the second slot 45 (which can also be the second socket) of the gear 2 3, and the second spring 432 will push out the second pin 431 to complete the connection between the clutch block 41 and the gear 2 3.

[0040] In the utility model, since the pin shaft 1 421 is provided with a spring 1 422 and the pin shaft 2 431 is provided with a spring 2 432, when the clutch block 41 moves back and forth on the spline portion 11, the pin shaft 1 421 or the pin shaft 2 431 on the clutch block 41 will first contact the corresponding end faces of the gear 1 2 and the gear 2 3. When the gear 1 2 and the gear 2 3 are rotating, the corresponding spring 1 422 or the spring 2 432 on the pin shaft 1 421 or the pin shaft 2 431 will be compressed until it corresponds to the slot 1 44 or the slot 2 45. Because of the restoring elastic force of the spring 1 422 or the spring 2 432, the clutch block 41 and the gear 1 2 or the gear 2 3 are fixedly connected together, and the gear engagement is completed, so the start-up gear shifting can be achieved. Since the slot 1 44 is located on the end face of the gear 1 2 and the slot 2 45 is located on the end face of the gear 2 3, the axial distance is reduced, and the complexity and large volume of the structure are greatly reduced.

[0041] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt conventional means such as mature bolts and rivets in the existing technology, which will not be described in detail here.

[0042] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A clutch structure on an electric tool, comprising an output shaft (1) and a gear 1 (2) and a gear 2 (3) arranged on the output shaft (1), a clutch mechanism (4) being arranged on the output shaft (1) between the gear 1 (2) and the gear 2 (3), characterized in that: The clutch mechanism (4) comprises a clutch block (41) arranged on the output shaft (1), the clutch block (41) being provided with a latch piece 1 (42) and a latch piece 2 (43), the latch piece 1 (42) being insertable into the gear 1 (2), the latch piece 2 (43) being insertable into the gear 2 (3), the gear 1 (2) being provided with a slot 1 (44) cooperating with the latch piece 1 (42), the gear 2 (3) being provided with a slot 2 (45) cooperating with the latch piece 2 (43), the clutch block (41) being fixedly connected with the gear 1 (2) or the gear 2 (3) by moving back and forth on the output shaft (1).

2. The clutch structure on the electric tool according to claim 1, characterized in that: The output shaft (1) is provided with a spline portion (11), the gear 1 (2) is located on one end of the output shaft (1), and the gear 2 (3) is located on the spline portion (11) of the output shaft (1), and the clutch block (41) is located on the spline portion (11) between the gear 1 (2) and the gear 2 (3) and moves back and forth.

3. The clutch structure on the electric tool according to claim 2, characterized in that: A groove (46) is provided on the circumference of the clutch block (41) for driving the clutch block (41) to slide back and forth on the spline portion (11), and the groove (46) is used to connect with a button mechanism (5).

4. The clutch structure of the electric tool according to claim 3, characterized in that: The button mechanism (5) comprises a housing (51) arranged on the output shaft (1), the output shaft (1) passes through the housing (51), the gear one (2), the gear two (3) and the clutch mechanism (4) are all located inside the housing (51), and a fixed shaft (52) is arranged inside the housing (51) in parallel with the output shaft (1), the fixed shaft (52) is provided with a slide plate (53) which moves back and forth along the fixed shaft (52), the slide plate (53) is provided with an elastic sheet (54), the slide plate (53) is provided with a knob (55), the knob (55) is provided with a connecting shaft (56), the connecting shaft (56) is located on the slide plate (53), and the other end of the slide plate (53) is located in the groove (46) of the clutch block (41).

5. The clutch structure of the electric tool according to claim 4, characterized in that: A matching rotating mechanism (57) parallel to the output shaft (1) is arranged inside the housing (51), and the matching rotating mechanism (57) includes a seat body (571) arranged inside the housing (51), and a first rotating gear (572) and a second rotating gear (573) matching with the gear one (2) and the gear two (3) are arranged on the seat body (571), and the first rotating gear (572) and the second rotating gear (573) are coaxially distributed.

6. The clutch structure on the electric tool according to claim 1, 2, 3, 4 or 5, characterized in that: It also includes a positioning pin (6) arranged on the clutch block (41), wherein the positioning pin (6) passes through the clutch block (41).

7. The clutch structure on the electric tool according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The latch member 1 (42) comprises a pin shaft 1 (421) arranged on the clutch block (41), a spring 1 (422) is arranged between the pin shaft 1 (421) and the clutch block (41), and the pin shaft 1 (421) extends toward the gear 1 (2), and a pin sleeve 1 (423) is arranged between the spring 1 (422) and the clutch block (41).

8. The clutch structure of the electric tool according to claim 7, characterized in that: The pin shaft one (421) is provided with a sleeve one (424).

9. The clutch structure of the electric tool according to claim 7, characterized in that: The second latch member (43) comprises a second pin shaft (431) arranged on the clutch block (41), a second spring (432) is arranged between the second pin shaft (431) and the clutch block (41), and the second pin shaft (431) extends toward the second gear (3), and a second pin sleeve (433) is arranged between the second spring (432) and the clutch block (41).

10. The clutch structure of the electric tool according to claim 9, characterized in that: The second pin shaft (431) is provided with a second sleeve (434).

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