Electric tool

Abstract

The utility model discloses an electric tool which comprises a main machine shell, a battery pack base and a plurality of damping pieces, a positioning base is arranged on the main machine shell, and a battery pack base containing cavity and a damping piece containing groove are formed in the positioning base. The battery pack seat is accommodated in the battery pack seat accommodating cavity and comprises a main body part, a wire holder connected with the main body part and at least one damping connecting part, the damping connecting part is provided with opposite supporting surfaces, and the opposite supporting surfaces respectively extend outwards to form supporting pieces; the damping piece is arranged on the supporting piece and contained in the supporting piece containing groove, and the two ends of the damping piece abut against the inner surface of the damping piece containing groove and the supporting face of the damping connecting part respectively. According to the utility model, the plurality of damping pieces are additionally arranged, so that the vibration transmission during the working of the electric tool can be effectively reduced, the vibration of the battery pack and the abrasion caused by the vibration between the battery pack seat and the battery pack are reduced, and the poor contact between the battery pack seat and the battery pack is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of electromechanical technology, specifically relating to an electric tool. Background Technology

[0002] An electric impact wrench typically consists of several main parts: a housing, a motor, a transmission structure, an impact mechanism, and an output shaft. The motor drives the impact mechanism to rotate through the transmission structure. During rotation, the impact mechanism intermittently strikes the output shaft, outputting torque, which allows the output shaft to tighten or loosen the workpiece.

[0003] Electric impact wrenches generate significant vibration during operation, especially high-torque impact wrenches. Among the entire mechanism, the battery pack is most susceptible to vibration, as it can affect the connection between the battery pack and its socket, accelerating wear on the connecting parts and ultimately leading to poor contact and no output from the machine. Therefore, vibration-damping design for the battery pack, its socket, and their connection method is crucial.

[0004] Therefore, it is necessary to provide an electric tool to address the aforementioned technical problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide an electric tool that can reduce vibration transmission during operation, reduce battery pack vibration, and reduce wear between the battery pack holder and the battery pack caused by vibration.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A power tool includes: a main housing, a battery pack holder, and several shock-absorbing components, wherein:

[0009] The main unit housing is provided with a positioning seat, and the positioning seat is provided with a battery pack receiving cavity and a shock absorber receiving groove.

[0010] The battery pack holder is housed in the battery pack holder cavity and includes a main body, a terminal block connected to the main body, and at least one shock-absorbing connection part. The shock-absorbing connection part has opposing support surfaces, and the opposing support surfaces extend outward to form support members.

[0011] The shock absorber is disposed on the support and housed in the shock absorber receiving groove, and both ends of the shock absorber abut against the inner surface of the shock absorber receiving groove and the supporting surface of the shock absorber connection, respectively.

[0012] In one or more embodiments of this utility model, a through hole is formed in the center of each shock absorber, and the shock absorber is press-fitted or injection-molded onto the corresponding support through the through hole.

[0013] In one or more embodiments of this utility model, the shock absorber is cylindrical, and a plurality of buffer holes are formed through both end faces.

[0014] In one or more embodiments of this utility model, the buffer holes are evenly distributed around the central through hole.

[0015] In one or more embodiments of this utility model, the diameter of the through hole matches the outer diameter of the support member, so that the shock absorber covers the outer surface of the support member in a matching manner.

[0016] In one or more embodiments of this utility model, the terminal block includes a connector, and the terminal block is fixedly mounted on the battery pack holder via the connector.

[0017] In one or more embodiments of this utility model, the battery pack holder includes a first battery pack holder and a second battery pack holder that are fixedly installed together, with an installation space formed between the first battery pack holder and the second battery pack holder, and the terminal block is installed in the installation space.

[0018] In one or more embodiments of this utility model, the terminal block and the battery pack holder are integrally formed.

[0019] In one or more embodiments of the present invention, the power tool further includes a battery pack, which is detachably mounted on the battery pack holder and connected to the battery pack via the terminal block.

[0020] In one or more embodiments of this utility model, the battery pack holder is detachably installed in the main unit housing.

[0021] This utility model provides an electric tool that effectively reduces vibration transmission during operation by sleeved shock absorbers on a support member and housed in a shock absorber receiving groove, with both ends of the shock absorber abutting against the inner surface of the shock absorber receiving groove and the supporting surface of the shock absorber connecting seat, respectively. This reduces vibration of the battery pack and wear between the battery pack holder and the battery pack caused by vibration. At the same time, by providing a terminal block and a shock absorber connecting part connected to the main body of the battery pack holder, poor contact between the battery pack holder and the battery pack is further avoided, which could lead to the electric tool malfunctioning. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the power tool in the embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the main unit housing in Embodiment 1 of this utility model;

[0025] Figure 3 This is an exploded view of part of the mechanism of the power tool in Embodiment 1 of this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of the battery pack holder structure;

[0027] Figure 5 This is a cross-sectional schematic diagram of the power tool in Embodiment 1 of this utility model;

[0028] Figure 6 This is a schematic diagram of the main unit housing in Embodiment 2 of this utility model;

[0029] Figure 7 This is an exploded view of part of the mechanism of the power tool in Embodiment 2 of this utility model;

[0030] Figure 8 This is a cross-sectional view of the power tool in Embodiment 2 of this utility model;

[0031] Figure 9 This is a schematic diagram of the main unit housing in Embodiment 3 of this utility model;

[0032] Figure 10 This is an exploded view of a portion of the structure of the power tool in Embodiment 3 of this utility model;

[0033] Figure 11 This is a cross-sectional schematic diagram of the power tool in Embodiment 3 of this utility model.

[0034] Explanation of key figure labels:

[0035] 1-Main unit housing, 2-Battery pack holder, 21-Main body, 22-Shock-absorbing connection part, 23-Supporting surface;

[0036] 24 - First battery pack holder, 25 - Second battery pack holder;

[0037] 3-Battery pack, 4-Positioning seat, 41-Battery pack housing cavity, 42-Shock absorber housing groove;

[0038] 5-Support component, 6-Shock absorber component, 7-Terminal connector, 8-Through hole, 9-Buffer hole;

[0039] 10-Pressure plate, 11-Screw. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of the embodiments of this application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0045] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0046] Example 1

[0047] Combined with Figure 1 、 Figure 3 、 Figure 7 and Figure 10 the power tool shown, which includes a main body housing 1, a battery pack seat 2 and a plurality of shock-absorbing members 6. Among them, a positioning seat 4 is provided on the main body housing 1, and a battery pack seat accommodating cavity 41 and a shock-absorbing member accommodating groove 42 are provided in the positioning seat 4.

[0048] The battery pack seat 2 is accommodated in the battery pack seat accommodating cavity 41, and includes a main body portion 21, a wiring seat 7 connected to the main body portion 21 and at least one shock-absorbing connection portion 22. In this embodiment, there is a set of shock-absorbing connection portions 22, and the shock-absorbing connection portion 22 extends upward from the upper end surface of the main body portion 21 and is in a hollow convex shape. Opposite support surfaces 23 are formed on both sides thereof, and rod-shaped support members 5 symmetrically distributed with respect to the shock-absorbing connection portion 22 extend outward from the opposite support surfaces 23 respectively. There are four support members 5 in this embodiment, and each support member 5 is used to mount a shock-absorbing member 6.

[0049] After the shock-absorbing member 6 is provided on the support member 5, the shock-absorbing member 6 together with the support member 5 therein is accommodated in the shock-absorbing member accommodating groove 42, and both ends of the shock-absorbing member 6 are respectively abutted against the inner surface of the shock-absorbing member accommodating groove 42 and the support surface 23 of the shock-absorbing connection portion 22, so as to limit the vibration of the shock-absorbing member 6 within the shock-absorbing member accommodating groove 42, reduce the amplitude of the shock-absorbing member 6, and reduce the vibration generated during the operation of the power tool and transmitted to the shock-absorbing connection portion 22, thereby reducing the vibration of the battery pack 3 and the wear between the battery pack seat 2 and the battery pack 3.

[0050] Referring to Figure 1 shown, the power tool of this embodiment further includes a battery pack 3. The battery pack 3 is detachably installed on the battery pack seat 2 and is electrically connected to the battery pack 2 through the wiring seat 7; the battery pack seat 2 is detachably installed in the main body housing 1. The detachable installation enables the user to quickly replace the battery pack 3, and also facilitates the maintenance personnel to check and repair the battery pack 3 and the battery pack seat 2, reduces the maintenance and replacement costs, and improves the portability of the power tool.

[0051] In this embodiment, a through hole 8 is formed in the center of each shock-absorbing member 6, and the through hole 8 extends from one end close to the support surface 23 to the other end and does not penetrate the other end surface. The shock-absorbing member 6 is press-fitted or injection-molded onto the corresponding support member 5 through the through hole 8. Specifically, the shock-absorbing member 6 is rubber or other shock-absorbing materials, and it covers the outer surface of the corresponding support member 5 through a press-fitting or injection-molding process to improve the installation stability of the shock-absorbing member 6 and enhance the shock-absorbing performance.

[0052] In this embodiment, the shock absorber 6 is cylindrical, and a plurality of buffer holes 9 are formed through both end faces thereof. Among them, the cylindrical shape of the shock absorber 6 can ensure that the pressure and stress caused by vibration are evenly dispersed in all directions, which can improve the stability and durability of the shock absorber 6; the buffer holes 9 can provide a channel for air flow. When the power tool operates and generates vibration, the flow of air will consume a part of the vibration energy and play a buffering role.

[0053] In this embodiment, the buffer holes 9 are evenly distributed around the central through hole 8. Among them, when the power tool operates and generates vibration, the evenly distributed buffer holes 9 can evenly disperse the vibration to the entire shock absorber 6, achieving a consistent shock absorption effect in all directions. Moreover, the evenly distributed buffer holes 9 facilitate the design and installation of the shock absorber 6.

[0054] In this embodiment, the diameter of the through hole 8 matches the outer diameter of the support member 5, so that the shock absorber 6 is wrapped around the outer surface of the support member 5 in a tight fit manner. Specifically, the diameter of the through hole is approximately equal to the outer diameter of the support hole 5, and the depth of the through hole is approximately equal to the length of the support member 5. Such a tight fit makes there no gap between the support member 5 and the shock absorber 6, avoiding the shaking of the shock absorber 6, effectively reducing the transmission of vibration, and also reducing the wear between the support member 5 and the shock absorber 6, improving the service life.

[0055] The wiring base 7 is provided in the battery pack base 2. Refer Figure 3 As shown, in this embodiment, the wiring base 7 includes a connecting member, and the wiring base 7 is fixedly installed on the battery pack base 2 through the connecting member. In this embodiment, the connecting member includes a pressing plate 10 and a screw 11. The wiring base 7 is connected to the battery pack base 2 through the connecting member composed of the combination of the pressing plate 10 and the screw 11. The screw 11 sequentially passes through the pressing plate 10 and the wiring base 7 and is fixedly connected to the screw hole on the battery pack base 2. When the power tool operates and generates vibration, through the connecting member composed of the pressing plate 10 and the screw 11, the stable connection between the wiring base 7 and the battery pack base 2 is ensured.

[0056] Power tools such as electric impact wrenches generate a large amount of vibration during operation due to the striking action of the impact structure. In order to reduce the transmission of vibration, in this embodiment, the power tool sleeved the shock absorber 6 on the support member 5 and houses it in the shock absorber receiving groove 42. The two ends of the shock absorber 6 are respectively abutted against the inner surface of the shock absorber receiving groove 42 and the support surface 23 of the shock connection portion 22, and the battery pack base 2 is housed in the positioning base 4 and connected to the battery pack 3 through a connecting member. This can reduce the wear between the battery pack base 2 and the battery pack 3 caused by vibration and avoid poor contact between the battery pack base 2 and the battery pack 3.

[0057] Embodiment 2

[0058] Refer Figures 6 to 8As shown, the power tool provided in this embodiment is basically the same as that in Embodiment 1. The difference is that in this embodiment, the battery pack seat 2 includes a first battery pack seat 24 and a second battery pack seat 25 which are fitted and installed. An installation space is formed between the first battery pack seat 24 and the second battery pack seat 25, and the wiring seat 7 is installed in the installation space. Installing the wiring seat 7 in the installation space formed by the first battery pack seat 24 and the second battery pack seat 25 can ensure the tight connection between the wiring seat 7 and the battery pack seat 2, improve the stability of the electrical connection, and avoid the risk of power-off caused by vibration.

[0059] Embodiment 3

[0060] As shown Figures 9 to 11 As shown, the power tool provided in this embodiment is basically the same as that in Embodiment 1. The difference is that the wiring seat 7 and the battery pack seat 2 are of an integrally formed structure. The integrated structure reduces the connection between components, simplifies the installation process, and can also improve the utilization rate of space.

[0061] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0062] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power tool, characterized in that, The power tool includes a main body housing, a battery pack holder, and several shock-absorbing components, wherein: The main unit housing is provided with a positioning seat, and the positioning seat is provided with a battery pack receiving cavity and a shock absorber receiving groove. The battery pack holder is housed in the battery pack holder cavity and includes a main body, a terminal block connected to the main body, and at least one shock-absorbing connection part. The shock-absorbing connection part has opposing support surfaces, and the opposing support surfaces extend outward to form support members. The shock absorber is disposed on the support and housed in the shock absorber receiving groove, and both ends of the shock absorber abut against the inner surface of the shock absorber receiving groove and the supporting surface of the shock absorber connection, respectively.

2. The power tool according to claim 1, characterized in that, Each of the shock absorbers has a through hole at its center, and the shock absorber is press-fitted or injection-molded onto the support through the through hole.

3. The power tool according to claim 1, characterized in that, The shock absorber is cylindrical, with several buffer holes formed through both end faces.

4. The power tool according to claim 3, characterized in that, The buffer holes are evenly distributed around the central through hole.

5. The power tool according to claim 2, characterized in that, The diameter of the through hole matches the outer diameter of the support member, so that the shock absorber fits tightly onto the outer surface of the support member.

6. The power tool according to claim 1, characterized in that, The terminal block includes a connector, and the terminal block is fixedly mounted on the battery pack holder via the connector.

7. The power tool according to claim 1, characterized in that, The battery pack holder includes a first battery pack holder and a second battery pack holder that are fixedly installed together, with an installation space formed between the first battery pack holder and the second battery pack holder, and the terminal block is installed in the installation space.

8. The power tool according to claim 1, characterized in that, The terminal block and the battery pack holder are integrally molded structures.

9. The power tool according to claim 1, characterized in that, The power tool also includes a battery pack, which is detachably mounted on the battery pack holder and connected to the battery pack via the terminal block.

10. The power tool according to claim 1, characterized in that, The battery pack holder is detachably installed in the main unit housing.

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