Device for quickly replacing side handle and electric tool thereof

Abstract

The utility model discloses a device for quickly replacing a side handle and an electric tool thereof, and belongs to the technical field of electric tools. Comprising a side handle shaft, a first clamping block is fixedly connected to the side handle shaft, a second clamping block is arranged on a sliding sleeve, fastening structures are arranged at the bottoms of the first clamping block and the second clamping block, and the fastening structures are connected and locked with the electric tool through approaching of the first clamping block and the second clamping block; the side handle shaft is provided with an elastic structure used for enabling the second clamping block to be close to the first clamping block, and a clamping and fixing structure used for locking the second clamping block is arranged between the second clamping block and the side handle shaft. The fastening structures are arranged at the bottoms of the first clamping block and the second clamping block, after the first clamping block and the second clamping block are close to each other and are connected and fastened with the electric tool through the fastening structures, the second clamping block is locked on the side handle shaft through the clamping structure, the first clamping block is fixed on the side handle shaft, and the first clamping block and the side handle shaft are fixed, so that the fastening structures can be firmly connected with the electric tool; and loosening is not easy.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology, specifically to a device for quickly changing side handles and the power tool thereof. Background Technology

[0002] High-torque drills and impact drills require a side handle for use. During operation, transportation, and storage, the side handle needs frequent disassembly and reassembly. Currently, the mainstream method on the market is a rotary side handle, which relies on the side handle screw shaft and the threaded hole of the locking block for locking and disassembly.

[0003] The existing rotary side handle has the following problems: 1. Installation and disassembly both rely on rotating the side handle screw shaft, which is time-consuming and labor-intensive; 2. The threaded connection is prone to loosening during operation, which can easily lead to safety accidents. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a device for quickly replacing the side handle. This application provides the following technical solution:

[0005] The tool includes a side handle shaft, on which a first locking block is fixedly connected and a second locking block is slidably sleeved. The bottom of the first and second locking blocks is provided with a fastening structure. The fastening structure is used to connect and lock the first and second locking blocks to the power tool by bringing them close together. The side handle shaft is provided with an elastic structure for bringing the second locking block closer to the first locking block. A locking structure is provided between the second locking block and the side handle shaft for locking the second locking block.

[0006] The elastic structure includes a shoulder fixed to the side handle shaft and a gap adjustment spring located between the shoulder and the second locking block.

[0007] The locking structure includes a locking pin inserted into the second locking block and a locking groove formed on the side handle shaft. A locking pin spring is provided between the locking pin and the second locking block to push the locking pin toward the side handle shaft. A handle is provided at one end of the locking pin that extends out of the second locking block.

[0008] The locking structure includes a pawl mounted in the second locking block via a pin and a locking groove formed on the side handle shaft. The pawl can rotate around the pin, and a pawl torsion spring is mounted on the pin to push one end of the pawl toward the side handle shaft. The other end of the pawl extends out of the second locking block.

[0009] The first locking block is connected and fixed to the side handle shaft by fastening screws.

[0010] The fastening structure includes fastening hooks that are respectively fixed to the bottom of the first and second blocks.

[0011] Secondly, this application also provides a power tool, including the aforementioned device for quick-change side handles.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] By setting a fastening structure at the bottom of the first and second locking blocks, the first and second locking blocks are connected and fastened to the power tool through the fastening structure. After the fastening structure is close to each other, the second locking block is locked onto the side handle shaft by the locking structure, while the first locking block is fixed to the side handle shaft. Both are fixed. If the locking structure is not released, the second locking block cannot move, so that the fastening structure can be firmly connected to the power tool. At the same time, an elastic structure is also set on the side handle shaft, which can push the second locking block toward the first locking block to realize the automatic locking of the fastening structure, making it more convenient to use.

[0014] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of a device for quick-change side handles.

[0017] Figure 2 This is an embodiment of a device for quickly changing side handles, along with a schematic diagram of the installation of a power tool.

[0018] Figure 3 This is a schematic diagram of another fastening structure for a quick-change side handle device.

[0019] Figure 4 This is a schematic diagram of a second embodiment of a device for quickly changing side handles.

[0020] Figure 5 This is a second embodiment of a device for quickly changing side handles, along with a schematic diagram of the installation of a power tool.

[0021] Figure 6 This is a schematic diagram of a pawl torsion spring structure in a device for quick-change side handles.

[0022] Reference numerals: 1. Side handle shaft; 2. First locking block; 21. Fastening screw; 3. Second locking block; 4. Elastic structure; 41. Shoulder; 42. Clearance adjustment spring; 5. Locking structure; 51. Locking pin; 52. Locking groove; 53. Locking pin spring; 54. Handle; 55. Pin; 56. Pawl; 57. Pawl torsion spring; 6. Fastening structure; 61. Fastening hook. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example 1

[0027] Please refer to Figure 1 , 2 As shown, this is a device for quickly changing the side handle provided in this embodiment 1;

[0028] The tool includes a side handle shaft 1, a first locking block 2 fixedly connected to the side handle shaft 1, and a second locking block 3 slidably sleeved on the side handle shaft 1. The bottom of the first locking block 2 and the second locking block 3 are provided with a fastening structure 6. The fastening structure 6 is used to connect and lock the first locking block 2 and the second locking block 3 to the power tool by bringing them close together. The side handle shaft 1 is provided with an elastic structure 4 for bringing the second locking block 3 close to the first locking block 2. The second locking block 3 and the side handle shaft 1 are provided with a locking structure 5 for locking the second locking block 3.

[0029] The elastic structure 4 includes a shoulder 41 fixed to the side handle shaft 1 and a gap adjustment spring 42 located between the shoulder 41 and the second locking block 3.

[0030] The locking structure 5 includes a locking pin 51 inserted into the second locking block 3 and a locking groove 52 opened on the side handle shaft 1. A locking pin spring 53 is provided between the locking pin 51 and the second locking block 3 to push the locking pin 51 toward the side handle shaft 1. A handle 54 is provided at the end of the locking pin 51 that extends out of the second locking block 3.

[0031] The first locking block 2 is connected and fixed to the side handle shaft 1 by fastening screw 21.

[0032] The fastening structure 6 includes fastening hooks 61 that are respectively fixed to the bottom of the first locking block 2 and the second locking block 3.

[0033] In practice, when the handle 54 is lifted, the handle 54 drives the locking pin 51 upward, compressing the locking pin spring 53. The locking pin 51 moves out of the slot 52, releasing the lock on the second locking block 3. The second locking block 3 is moved away from the first locking block 2, and the gap adjustment spring 42 is compressed. The power tool is placed between the fastening hooks 61, and the second locking block 3 is released. The gap adjustment spring 42 pushes the second locking block 3 closer to the first locking block 2, and the fastening hooks 61 approach and clamp and lock with the power tool. The locking pin spring 53 pushes the locking pin 51 into the slot 52. The engagement of the locking pin 51 and the slot 52 restricts the movement of the second locking block 3 on the side handle shaft 1, locking the second locking block 3.

[0034] like Figure 3 As shown, the fastening structure 6 can also be a fastening ring. The two ends of the fastening ring are connected to the first locking block 2 and the second locking block 3 respectively. When the first locking block 2 and the second locking block 3 are close together, the fastening ring is tightened and fixed by binding the fastening ring with the power tool.

[0035] Example 2

[0036] like Figure 4-6 As shown, the difference from the above embodiment is that the locking structure 5 includes a pawl 56 installed in the second locking block 3 via a pin 55 and a locking groove 52 opened on the side handle shaft 1. The pawl 56 can rotate around the pin 55. A pawl torsion spring 57 is installed on the pin 55 to push one end of the pawl 56 toward the side handle shaft 1. The other end of the pawl 56 extends out of the second locking block 3.

[0037] The pin 55 passes through the through hole in the middle of the pawl torsion spring 57. Both ends of the pawl torsion spring 57 are inserted into the second locking block 3, and the middle part abuts against the pawl 56. When the pawl 56 is rotated by human force, the middle part of the pawl torsion spring 57 is compressed and twisted. Both ends of the pawl torsion spring 57 are fixed to the second locking block 3. When the human force is removed, the elastic force generated by the twisted pawl torsion spring 57 pushes the pawl 56 to reset.

[0038] In practice, pressing down one end of the pawl 56 that protrudes from the second locking block 3 causes the pawl 56 to rotate around the pin 55. The end of the pawl 56 located in the slot 52 moves out of the slot 52, releasing the lock on the second locking block 3. Moving the second locking block 3 away from the first locking block 2 compresses the gap adjusting spring 42. Placing the power tool between the fastening hooks 61 releases the second locking block 3. The gap adjusting spring 42 pushes the second locking block 3 closer to the first locking block 2, and the fastening hooks 61 approach and engage with the power tool. The pawl torsion spring 57 pushes the pawl 56 to rotate, causing one end of the pawl 56 to engage in the slot 52. The engagement of the pawl 56 with the slot 52 restricts the movement of the second locking block 3 on the side handle shaft 1, locking the second locking block 3.

[0039] A power tool including the aforementioned quick-change side handle device.

[0040] It should be noted that the power tool housing has a protrusion that engages precisely with the fastening hook 61, or in other words, the fastening hook 61 is designed to fit into the shape of a protrusion on an existing power tool housing.

[0041] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A device for quick change of side handle, characterized in that: The utility model provides a quick replacement side handle device, including side handle shaft (1), first clamping block (2) is fixedly connected on side handle shaft (1), and second clamping block (3) is sleeved, first clamping block (2) and second clamping block (3) bottom are provided with fastening structure (6), fastening structure (6) is locked with electric tool through first clamping block (2) and second clamping block (3) close, side handle shaft (1) is provided with elastic structure (4) for making second clamping block (3) close first clamping block (2), and the clamping structure (5) for locking second clamping block (3) is arranged between second clamping block (3) and side handle shaft (1).

2. A quick-change side handle device as claimed in claim 1, characterized in that: The elastic structure (4) includes a shaft shoulder (41) fixed to the side handle shaft (1) and a gap adjusting spring (42) located between the shaft shoulder (41) and the second clamping block (3).

3. A quick-change side handle device as described in claim 1, wherein: The clamping structure (5) includes a clamping pin (51) passing through the second clamping block (3) and a clamping groove (52) opened on the side handle shaft (1), the clamping pin (51) and the second clamping block (3) are provided with a clamping pin spring (53) for pushing the clamping pin (51) towards the side handle shaft (1), and one end of the clamping pin (51) extending out of the second clamping block (3) is provided with a pull handle (54).

4. A quick-change side handle device as described in claim 1, wherein: The clamping structure (5) includes a pawl (56) installed in the second clamping block (3) through a pin shaft (55) and a clamping groove (52) opened on the side handle shaft (1), the pawl (56) can rotate around the pin shaft (55), the pin shaft (55) is installed with a pawl torsional spring (57) for pushing one end of the pawl (56) towards the side handle shaft (1), and the other end of the pawl (56) extends out of the second clamping block (3).

5. A quick-change side handle device as described in claim 1, wherein: The first clamping block (2) is connected and fixed with the side handle shaft (1) through a fastening screw (21).

6. A quick-change side handle device as described in claim 1, wherein: The fastening structure (6) includes fastening hooks (61) fixed to the bottom of the first clamping block (2) and the second clamping block (3) respectively.

7. A power tool characterized by The utility model provides a quick replacement side handle device, including the device of any one of claims 1-6.

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