Electric tool

Abstract

The utility model relates to an electric tool, which comprises a tool main body, an output shaft, a first mounting hole and a second mounting hole, the auxiliary handle is located on the radial side of the output shaft and comprises a holding part and a connecting part, and a second mounting hole is formed in the connecting part; the mounting piece is arranged in the second mounting hole and the first mounting hole in a penetrating manner; the first damping piece is provided with a first damping part and a second damping part; the second damping piece is provided with a third damping part and a fourth damping part; one mounting piece is at least sleeved with a first damping piece and a second damping piece, the first damping part and the third damping part are clamped between the hole wall of the second mounting hole and the mounting piece, the second damping part is clamped between the outer wall of the connecting part and the mounting piece, and the fourth damping part is clamped between the outer wall of the connecting part and the machine shell. According to the electric tool, the first damping piece and the second damping piece are connected to the installation piece used for connecting the auxiliary handle and the machine shell in the sleeved mode, damping is carried out on the auxiliary handle in the axial direction and the radial direction of the output shaft, and the vibration sense transmitted to the arm of a user by the auxiliary handle is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool technical field, especially a kind of electric tool. BACKGROUND

[0002] Electric tool is widely applied in each field of industrial manufacturing, electric tool will produce larger shock feeling in operation process, especially impact tool, impact force is very big, shock feeling is transmitted to user arm through handle, can lead to user arm numbness fatigue, long-term use also easily cause harm to user arm. UTILITY MODEL CONTENT

[0003] Based on the above defects in prior art, the utility model aims at providing a kind of electric tool, first shock absorber and second shock absorber are sleeved on the mounting piece for connecting auxiliary handle and shell, the shock feeling of auxiliary handle transmitted to user arm is effectively reduced in the axial direction and radial direction of output shaft.

[0004] Therefore, the utility model provides the following technical scheme.

[0005] The utility model provides a kind of electric tool, the electric tool includes:

[0006] Tool body, it includes shell and the output shaft being connected to the shell, the shell is equipped with first mounting hole;

[0007] Auxiliary handle, it is located in the radial side of the output shaft, and it includes gripping portion and connecting portion, the connecting portion is equipped with second mounting hole;

[0008] Mounting piece, it is threaded in the second mounting hole and the first mounting hole, to install the auxiliary handle on the shell;

[0009] First shock absorber, it has first shock absorbing part and second shock absorbing part;

[0010] Second shock absorber, it has third shock absorbing part and fourth shock absorbing part;

[0011] Wherein, one mounting piece is at least sleeved with first shock absorber and second shock absorber, first shock absorbing part and third shock absorbing part are clamped between the hole wall of second mounting hole and mounting piece respectively, second shock absorbing part is clamped between the outer wall of connecting portion and mounting piece, fourth shock absorbing part is clamped between the outer wall of connecting portion and shell.

[0012] Optionally, the mounting piece is fastener, and / or, first shock absorber and second shock absorber are all rubber ring.

[0013] Optionally, the mounting member comprises a connecting cap and a mounting rod connected to each other, the mounting rod is arranged in the second mounting hole and the first mounting hole, the connecting cap is arranged on the side of the connecting portion away from the casing, and the second damping portion is arranged between the outer wall of the connecting portion and the connecting cap.

[0014] Optionally, a gasket is arranged between the connecting cap and the second damping portion, and the gasket is sleeved on the outer periphery of the mounting rod.

[0015] Optionally, the casing comprises a protruding structure, the first mounting hole is arranged on the protruding structure, and the fourth damping portion is arranged between the outer wall of the connecting portion and the protruding structure.

[0016] Optionally, the direction in which the second damping portion is clamped is perpendicular to the central axis of the output shaft, and the direction in which the fourth damping portion is clamped is also perpendicular to the central axis of the output shaft.

[0017] Optionally, the number of the first mounting hole, the second mounting hole and the mounting member is at least two, and the three are arranged in one-to-one matching mode.

[0018] The first damping member and the second damping member form a damping assembly, and each mounting member is matched with a damping assembly.

[0019] Optionally, the auxiliary handle is annular, the holding portion and the connecting portion are distributed in a direction away from the casing, and the holding portion extends along the radial direction of the output shaft.

[0020] Optionally, the auxiliary handle further comprises two connecting portions, and two ends of the holding portion are connected to two ends of the connecting portion through the two connecting portions.

[0021] The connecting portion extends forward or backward to offset the holding portion from the middle part of the connecting portion.

[0022] Optionally, the casing comprises a first casing and a second casing connected in sequence in a forward direction, and the tool body further comprises a motor and a transmission assembly in transmission cooperation.

[0023] The motor is arranged in the first casing, the transmission assembly is arranged in the second casing, and the first mounting hole is arranged on the second casing.

[0024] The utility model has the following technical effects:

[0025] The utility model provides a kind of electric tool, first shock absorber and second shock absorber are sleeved on the mounting piece for connecting auxiliary handle and shell, and the assembly relationship of optimized first shock absorber, second shock absorber, connecting portion, mounting piece and shell, the connecting portion of mounting piece and auxiliary handle is separated by first shock absorber and second shock absorber, can carry out shock absorption in the axial direction and radial direction of output shaft to auxiliary handle, effectively reduce the shock feeling of auxiliary handle transmission to user's arm. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three-dimensional structure schematic diagram of the electric tool of the utility model;

[0027] Figure 2 It is the structure sectional view of the electric tool of the utility model;

[0028] Figure 3 It is Figure 2 Enlarged view of A in middle;

[0029] Figure 4 It is the structure explosion drawing of the electric tool of the utility model;

[0030] Figure 5 It is the three-dimensional structure schematic diagram of auxiliary handle of the utility model.

[0031] REFERENCE SIGNS

[0032] 100, electric tool;

[0033] 1, tool body;11, shell;111, first mounting hole;112, protruding structure;113, first shell;114, second shell;1141, front shell;1142, rear cover;12, output shaft;13, motor;14, transmission assembly;

[0034] 2, auxiliary handle;21, gripping portion;22, connecting portion;221, second mounting hole;222, recess;23, link portion;

[0035] 3, mounting piece;31, end cap;32, mounting rod;

[0036] 4, first shock absorber;41, first shock absorbing portion;42, second shock absorbing portion;

[0037] 5, second shock absorber;51, third shock absorbing portion;52, fourth shock absorbing portion;

[0038] 6, gasket;

[0039] 7, main handle. DETAILED DESCRIPTION

[0040] In order to make the technical scheme and beneficial effects of the present application more obvious and easy to understand, the following will be described in detail by way of specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meaning as the technical and scientific terms in the technical field to which the present application belongs.

[0041] In the description of the present application, unless otherwise explicitly defined, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of simplified description of the present application, and do not indicate that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, that is, cannot be understood as a limitation on the present application.

[0042] In the present application, the terms "first" and "second" are only for the purpose of clear description, and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two; the meaning of "several" is at least one; except for explicit definition.

[0043] In the present application, unless otherwise explicitly defined, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly. For example, "connection" can be fixed connection, detachable connection or integral molding; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, or can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise explicitly defined, the first feature "on", "over", "above" and "top" of the second feature, "below", "under", "below" or "under" can be direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium. Moreover, the first feature "over", "above" and "top" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature "below", "below" and "under" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than the horizontal height of the second feature.

[0045] In this utility model, "front," "rear," "left," "right," "up," and "down" all refer to... Figure 1 and Figure 2 The markings in the text shall prevail.

[0046] The following is based on Figures 1 to 5 This utility model describes the power tool in detail.

[0047] In this embodiment, such as Figures 1 to 5 As shown, the power tool 100 includes a tool body 1, an auxiliary handle 2, a mounting component 3, a first shock absorber 4, and a second shock absorber 5. The tool body 1 includes a housing 11, an output shaft 12, a motor 13, and a transmission assembly 14. The output torque of the motor 13 is transmitted to the output shaft 12 through the transmission assembly 14. The tool body 1 drives the tool head (such as a drill bit or screwdriver bit) to perform operations through the output shaft 12. The auxiliary handle 2 is connected to the housing 11 and located on the radial side of the output shaft 12. The auxiliary handle 2 includes a grip portion 21 and a connecting portion 22. The grip portion 21 is for the user to hold. The housing 11 has a first mounting hole 111, and the connecting portion 22 has a second mounting hole 221. The mounting component 3 passes through the second mounting hole 221 and the first mounting hole 111 to mount the auxiliary handle 2 onto the housing 11. The first shock absorber 4 has a first shock absorber 41 and a second shock absorber 42, and the second shock absorber 5 has a third shock absorber 51 and a fourth shock absorber 52.

[0048] When the power tool 100 is in operation, the vibration generated by the tool body 1 is transmitted to the mounting part 3 through the wall of the first mounting hole 111, causing the mounting part 3 to vibrate. In order to dampen the vibration of the auxiliary handle 2, such as Figures 3 to 5 As shown, a mounting component 3 is fitted with at least a first damping component 4 and a second damping component 5. The first damping portion 41 and the third damping portion 51 are both located in the second mounting hole 221. Furthermore, the first damping portion 41 and the third damping portion 51 are respectively clamped between the hole wall of the second mounting hole 221 and the mounting component 3. The second damping portion 42 is clamped between the outer wall of the connecting portion 22 and the mounting component 3. The fourth damping portion 52 is clamped between the outer wall of the connecting portion 22 and the housing 11. Specifically, when the tool body 1 vibrates along the axial direction of the output shaft 12, it causes the mounting component 3 to vibrate radially along the second mounting hole 221. The first damping portion 41 and the third damping portion 51 can reduce the vibration transmitted from the mounting component 3 to the hole wall of the second mounting hole 221, thus damping the auxiliary handle 2 along the axial direction of the output shaft 12. When the tool body 1 vibrates radially along the output shaft 12, it causes the mounting part 3 to vibrate axially along the second mounting hole 221. The second damping part 42 can reduce the vibration transmitted from the mounting part 3 to the outer wall of the connecting part 22, and the fourth damping part 52 can reduce the vibration transmitted from the outer wall of the housing 11 to the outer wall of the connecting part 22, thus damping the auxiliary handle 2 radially along the output shaft 12.

[0049] In the above technical solution, the first damping member 4 and the second damping member 5 are sleeved on the mounting member 3, and the assembly relationship of the first damping member 4, the second damping member 5, the connecting portion 22, the mounting member 3 and the shell 11 is optimized, so that the connecting portion 22 of the auxiliary handle 2 is separated from the mounting member 3, the auxiliary handle 2 can be damped in the axial and radial directions of the output shaft 12, and the vibration transmitted to the user's arm by the auxiliary handle 2 can be effectively reduced.

[0050] Of course, the mounting member 3 is not limited to only sleeving the first damping member 4 and the second damping member 5, but can also sleeve a third damping member (not shown in the figure). The third damping member is clamped between the mounting member 3 and the hole wall of the first mounting hole 111, and is used to reduce the vibration transmitted from the hole wall of the first mounting hole 111 to the mounting member 3.

[0051] In an embodiment, as shown in Figure 3 and Figure 4 , the mounting member 3 is a fastener (such as a bolt), which is simple in structure and easy to assemble.

[0052] In an embodiment, the first damping member 4 and the second damping member 5 are both rubber rings. When the rubber rings are deformed by external force, part of the energy is absorbed, thereby playing a damping role.

[0053] In an embodiment, as shown in Figure 3 and Figure 4 , the mounting member 3 includes a connecting end cap 31 and a mounting rod 32. The mounting rod 32 passes through the second mounting hole 221 and the first mounting hole 111, and the end cap 31 is located on the side of the connecting portion 22 away from the shell 11. The second damping portion 42 is clamped between the outer wall of the connecting portion 22 and the end cap 31. When the tool body 1 vibrates in the radial direction of the output shaft 12, the mounting member 3 vibrates in the axial direction of the second mounting hole 221, and the end cap 31 frequently presses the second damping portion 42, thereby reducing the vibration transmitted from the end cap 31 to the outer wall of the connecting portion 22 through the second damping portion 42.

[0054] Further, when the mounting member 3 is a fastener, the outer diameter of the end cap 31 of the corresponding type of mounting member 3 is fixed. As shown in Figure 3 and Figure 4 , a gasket 6 is arranged between the end cap 31 and the second damping portion 42, and the end cap 31 presses the second damping portion 42 through the gasket 6. In this way, by increasing the contact area of the gasket 6 and the second damping portion 42, the damping effect of the second damping portion 42 on the auxiliary handle 2 in the radial direction of the output shaft 12 is improved.

[0055] Further, as shown in Figure 3 and Figure 5As shown, the connecting portion 22 is provided with a groove 222, one end of the second mounting hole 221 is located in the groove 222, and the groove 222 is used to place the gasket 6, facilitating assembly.

[0056] In an embodiment, as shown in Figure 3 and Figure 4 , the shell 11 includes a protruding structure 112, the first mounting hole 111 is arranged on the protruding structure 112, and the fourth damping portion 52 is clamped between the outer wall of the connecting portion 22 and the protruding structure 112. When the tool body 1 vibrates in the radial direction of the output shaft 12, the protruding structure 112 presses the fourth damping portion 52, and the vibration transmitted from the shell 11 to the outer wall of the connecting portion 22 is reduced through the fourth damping portion 52.

[0057] In an embodiment, as shown in Figure 2 and Figure 3 , the clamping direction of the second damping portion 42 and the clamping direction of the fourth damping portion 52 are both perpendicular to the central axis of the output shaft 12, so as to improve the damping effect of the second damping portion 42 and the fourth damping portion 52 on the auxiliary handle 2 in the radial direction of the output shaft 12.

[0058] In an embodiment, as shown in Figure 4 and Figure 5 , the number of the first mounting hole 111, the second mounting hole 221 and the mounting member 3 is four, and the first mounting hole 111, the second mounting hole 221 and the mounting member 3 are matched one by one, which is conducive to the firm assembly of the auxiliary handle 2 and the shell 11. The first damping member 4 and the second damping member 5 form a damping assembly, and four damping assemblies are configured, each mounting member 3 is matched with a damping assembly, and each mounting member 3 is separated from the connecting portion 22 by the matched damping assembly, thereby effectively damping the auxiliary handle 2. Of course, the number of the first mounting hole 111, the second mounting hole 221, the mounting member 3 and the damping assembly is not limited to four, but can also be two, three or more.

[0059] In an embodiment, as shown in Figure 3 and Figure 4 , the first damping member 4 and the second damping member 5 have the same structure and the same size, which reduces the cost and facilitates assembly.

[0060] In an embodiment, as shown in Figure 4 and Figure 5 , the auxiliary handle 2 is annular, the gripping portion 21 and the connecting portion 22 are distributed apart in the direction towards the shell 11, a through hole for the user's hand to pass through is formed between the gripping portion 21 and the connecting portion 22, and the gripping portion 21 extends in the radial direction of the output shaft 12, facilitating gripping.

[0061] Further, as shown in Figure 2 , Figure 4 andFigure 5 As shown, the auxiliary handle 2 further comprises two connecting portions 23, two ends of the holding portion 21 are connected with two ends of the connecting portion 22 respectively through the two connecting portions 23. The connecting portions 23 extend forwardly or backwardly to make the holding portion 21 deviate from the middle part of the connecting portion 22, and reduce the interference of the holding portion 21 to the assembly mounting member 3.

[0062] In an embodiment, as shown in Figures 1 to 4 As shown, the casing 11 comprises a first casing 113 and a second casing 114 connected in sequence in the forward direction, the motor 13 is located in the first casing 113, the transmission assembly 14 is located in the second casing 114, the first mounting hole 111 is arranged on the second casing 114, and the main handle 7 of the electric tool 100 is located at the rear end of the casing 11, so that the auxiliary handle 2 has a larger spacing with the main handle 7, avoiding the load of the electric tool 100 concentrated on the main handle 7. Further, the second casing 114 comprises a front casing 1141 and a rear cover 1142 connected, the transmission assembly 14 comprises a planetary gear train mechanism (not shown in the figure) for deceleration, the planetary gear train mechanism is accommodated in the rear cover 1142, and the first mounting hole 111 is arranged on the rear cover 1142.

[0063] Further, as shown in Figure 2 and Figure 4 The first mounting hole 111 is arranged close to the first casing 113, so that the vibration transmitted from the transmission assembly 14 and the motor 13 to the auxiliary handle 2 can be effectively reduced through the first damping member 4 and the second damping member 5.

[0064] It should be understood that the above embodiments are exemplary and are not intended to include all possible embodiments included in the claims. Various modifications and changes can also be made on the basis of the above embodiments without departing from the scope of the disclosure. Similarly, any combination of the technical features of the above embodiments can also be made to form another embodiment of the utility model which can not be explicitly described. Therefore, the above embodiments only express several embodiments of the utility model, and do not limit the protection scope of the utility model patent.

Claims

1. A power tool, characterized in that, The power tool (100) includes: The tool body (1) includes a housing (11) and an output shaft (12) connected to the housing (11), wherein the housing (11) is provided with a first mounting hole (111); An auxiliary handle (2) is located on the radial side of the output shaft (12) and includes a grip (21) and a connecting part (22), wherein the connecting part (22) is provided with a second mounting hole (221); Mounting component (3) passes through the second mounting hole (221) and the first mounting hole (111) to mount the auxiliary handle (2) onto the housing (11); The first damping member (4) has a first damping part (41) and a second damping part (42); The second damping member (5) has a third damping part (51) and a fourth damping part (52); In this embodiment, at least one of the mounting components (3) is fitted with the first shock absorber (4) and the second shock absorber (5). The first shock absorber (41) and the third shock absorber (51) are respectively sandwiched between the hole wall of the second mounting hole (221) and the mounting component (3). The second shock absorber (42) is sandwiched between the outer wall of the connecting part (22) and the mounting component (3). The fourth shock absorber (52) is sandwiched between the outer wall of the connecting part (22) and the housing (11).

2. The power tool according to claim 1, characterized in that, The mounting component (3) is a fastener, and / or the first shock absorber (4) and the second shock absorber (5) are both rubber rings.

3. The power tool according to claim 1, characterized in that, The mounting component (3) includes a connected end cap (31) and a mounting rod (32). The mounting rod (32) passes through the second mounting hole (221) and the first mounting hole (111). The end cap (31) is located on the side of the connecting part (22) away from the housing (11). The second shock-absorbing part (42) is sandwiched between the outer wall of the connecting part (22) and the end cap (31).

4. The power tool according to claim 3, characterized in that, A gasket (6) is provided between the end cap (31) and the second shock absorber (42), and the gasket (6) is sleeved on the outer periphery of the mounting rod (32).

5. The power tool according to claim 1, characterized in that, The housing (11) includes a protruding structure (112), the first mounting hole (111) is provided on the protruding structure (112), and the fourth shock-absorbing part (52) is sandwiched between the outer wall of the connecting part (22) and the protruding structure (112).

6. The power tool according to any one of claims 1-5, characterized in that, The direction in which the second damping part (42) is clamped and the direction in which the fourth damping part (52) is clamped are both perpendicular to the central axis of the output shaft (12).

7. The power tool according to any one of claims 1-5, characterized in that, The number of the first mounting hole (111), the second mounting hole (221), and the mounting component (3) are all at least two, and the three are matched one by one; The first damping member (4) and the second damping member (5) constitute a set of damping components, and each of the mounting members (3) is matched with a set of damping components.

8. The power tool according to any one of claims 1-5, characterized in that, The auxiliary handle (2) is ring-shaped, and the grip (21) and the connecting part (22) are spaced apart in the direction toward the housing (11). The grip (21) extends radially along the output shaft (12).

9. The power tool according to claim 8, characterized in that, The auxiliary handle (2) also includes two connecting parts (23), and the two ends of the gripping part (21) are respectively connected to the two ends of the connecting part (22) through the two connecting parts (23); The connecting portion (23) extends forward or backward so that the gripping portion (21) is offset from the middle part of the connecting portion (22).

10. The power tool according to any one of claims 1-5, characterized in that, The housing (11) includes a first housing (113) and a second housing (114) connected sequentially in the forward direction, and the tool body (1) also includes a motor (13) and a transmission assembly (14) that are in transmission cooperation; The motor (13) is located in the first housing (113), the transmission assembly (14) is located in the second housing (114), and the first mounting hole (111) is provided on the second housing (114).

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