Foldable extension rod of electric tool

Abstract

The foldable extension rod of the electric tool comprises a first rod body and a second rod body which are adjacent, the first rod body and the second rod body are connected in a rotating mode, a tilting rod is installed on the first rod body, a first rotating connecting part and a second rotating connecting part are arranged on the tilting rod, the tilting rod is connected with the first rod body in a rotating mode through the first rotating connecting part, and the second rotating connecting part is connected with the second rod body in a rotating mode through the second rotating connecting part. A locking piece is rotationally connected to the second rotary connecting part and can rotationally buckle the second rod body, and when the locking piece rotationally buckles the second rod body and limits rotation of the tilting rod and the locking piece, the first rod body and the second rod body are attached in a face-to-face mode, the tilting rod and the locking piece are arranged in an overlapped mode, and the second rotary connecting part is located between the first rod body and the first rotary connecting part. And the locking piece is buckled and fixed with the rod body II. Compared with the prior art, the extension rod has the advantages that when the extension rod is applied to the high-frequency vibration electric tool, the extension rod can be effectively prevented from being shortened during remote operation, and the practicability and the stability of the remote operation of the electric tool are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of power tools, in particular to an extension rod of a power tool, and more particularly to a foldable extension rod of a power tool. Background Art

[0002] During the use of power tools, there will be situations where the operating distances are different, such as wall grinding, gardening pruning, etc. Not only close-range operation and processing are required, but sometimes operations on positions at a relatively far distance also need to be carried out.

[0003] For example, a handheld grinding machine with a telescopic rod structure disclosed in the authorized publication number CN206286947U attaches and installs a telescopic rod on the grinding machine, and realizes the processing operation of the grinding machine at a close range or far from the handheld grinding machine by disassembling and assembling the telescopic rod.

[0004] However, the telescopic locking of the telescopic rod is usually achieved by increasing the friction force between the surface-to-surface fits. The grinding machine usually works with high-frequency vibration. When the high-frequency vibrating grinding machine is transmitted to the telescopic rod, it also has vibration. Since pressure needs to be applied during the operation of the grinding machine to ensure that the sandpaper on the grinding machine contacts the wall surface to achieve the friction and grinding effects.

[0005] In the case of high-frequency vibration of the telescopic rod, there is also pressure applied to the grinding machine through the telescopic rod. The friction force between the telescopic locking structures of the telescopic rod will decrease due to the influence of vibration and pressure, resulting in the shortening of the length of the telescopic rod and affecting the use of the grinding machine at a long distance. Summary of the Utility Model

[0006] Aiming at the problem that the telescopic rod of the existing power tool will affect the long-distance use due to vibration and pressure, the technical problem to be solved by the utility model is to provide a foldable extension rod of a power tool that can ensure the long-distance operation of the power tool.

[0007] The technical solution adopted by the utility model to solve the above technical problem is: a foldable extension rod of a power tool, including adjacent rod body one and rod body two;

[0008] The rod body one and the rod body two are rotatably connected;

[0009] A lever is installed on the rod body one, and a first rotating connection part and a second rotating connection part are provided on the lever;

[0010] The lever is rotatably connected to the rod body one through the first rotating connection part, and a locking member is rotatably connected to the second rotating connection part, and the locking member can rotatably buckle the rod body two;

[0011] When the locking piece rotates and engages with rod body 2 and restricts the rotation of the tilting rod and the locking piece, rod body 1 and rod body 2 are in surface contact, the tilting rod and the locking piece are overlapped, the rotating connecting part 2 is located between rod body 1 and the rotating connecting part 1, and the locking piece and rod body 2 are buckled and fixed.

[0012] A further preferred solution of the utility model is: a buckle groove is provided on the second rod body, and a hook portion capable of deformation is provided on the locking member, and the hook portion and the buckle groove can be buckled and fixed.

[0013] A further preferred solution of the utility model is that the notch of the buckle groove is arranged on the outer wall surface away from the rod body one, and the groove wall of the buckle groove away from the rod body two can limit the detachment of the hook part.

[0014] A further preferred solution of the utility model is that the hook portion and the buckle groove are fitted together by arc-shaped surface-line-surface or surface-surface fitting.

[0015] A further preferred solution of the utility model is that when the locking member is buckled and fixed to the first rod body and the second rod body, an unlocking opening is left between the locking member and the rod body.

[0016] A further preferred solution of the utility model is: a kit 1 is sleeved or plugged on one end of the rod body 1, and the kit 1 is rotatably connected to the tilting rod.

[0017] A further preferred solution of the utility model is: a set 2 is sleeved or plugged on one end of the rod body 2, the set 2 is rotatably connected to the set 1, and the locking piece is buckled with the set 2.

[0018] A further preferred solution of the utility model is: the first set and the second set are each provided with an end face that fits together when buckled, the end face of the first set or the second set is provided with a groove, a gasket is provided in the groove, and the gasket is higher than the end face.

[0019] A further preferred solution of the utility model is that a connecting piece is provided, and the first set and the second set are both rotatably connected to the connecting piece.

[0020] A further preferred solution of the utility model is that a plurality of cushion blocks are embedded in the connecting member, and when the locking member fastens the first and second sets, the cushion blocks fit the outer walls of the first and second sets.

[0021] Compared with the prior art, the advantages of the utility model lie in that, through the rotational connection between rod body one and rod body two, the rotational installation of the tilting rod and the locking piece of rod body one, the rotational buckling between the locking piece and rod body one and rod body two, and the surface-to-surface fit between rod body one and rod body two when the locking piece buckles rod body one and rod body two, when the extension rod is used for high-frequency vibration electric tools, the shortening of the extension rod during long-distance operation can be effectively avoided, thereby ensuring the practicality and stability of long-distance operation of the electric tool. Brief Description of the Drawings

[0022] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0023] Figure 1 It is a schematic structural diagram of the locking state of the extension rod of the preferred embodiment of the present utility model;

[0024] Figure 2 It is a cross-sectional view of the locking state of the extension rod of the preferred embodiment of the present utility model;

[0025] Figure 3 It is a schematic operation diagram of the first step of unlocking the extension rod of the preferred embodiment of the present utility model;

[0026] Figure 4 It is an operation analysis diagram of the first step of unlocking the extension rod of the preferred embodiment of the present utility model;

[0027] Figure 5 It is a schematic operation diagram of the second step of unlocking the extension rod of the preferred embodiment of the present utility model;

[0028] Figure 6 It is a schematic operation diagram of the third step of unlocking the extension rod of the preferred embodiment of the present utility model;

[0029] Figure 7 It is a schematic diagram of the state when the third step of unlocking the extension rod of the preferred embodiment of the present utility model is folded;

[0030] Figure 8 It is a cross-sectional view when the third step of unlocking the extension rod of the preferred embodiment of the present utility model is folded.

[0031] In the figure: 1. First rod body; 2. First kit; 3. Connecting piece; 4. Second kit, 4a. Buckle groove, 4b. Groove, 4c. Plug; 5. Lever, 5a. First rotating connection part, 5b. Second rotating connection part; 6. Locking piece, 6a. Hook part; 7. Second rod body; 8. Unlocking port; 9. Washer; 10. Spacer; 11. Horizontal extension line. Detailed Description of the Preferred Embodiments

[0032] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. Those skilled in the art will understand that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0033] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0034] This embodiment mainly describes a foldable extension rod for an electric tool that can ensure long-distance operation of the electric tool, as follows:

[0035] like Figure 1-8 As shown, a foldable extension rod for an electric tool comprises a rod body 1, a kit 1 2 sleeved on one end of the rod body 1, a connecting piece 3 rotatably connected to the kit 1 2, a kit 2 4 rotatably connected to the connecting piece 3, a tilting rod 5 rotatably mounted on the kit 1 2, a locking piece 6 rotatably connected to the tilting rod 5 and capable of being buckled with the kit 2 4, and a rod body 2 7 having one end inserted into the kit 2 4, the connecting piece 3 and the tilting rod 5 are respectively arranged on both sides of the kit 1 2, and when the locking piece 6 buckles and locks the kit 1 2 and the kit 2 4, the kit 1 2 and the kit 2 4 are located between the rod body 1 and the rod body 2 7.

[0036] In this embodiment, the tilting rod 5 is provided with a rotating connecting part 1 5a which is rotatably connected to the set 1 2, and a rotating connecting part 2 5b which is rotatably connected to the locking member 6. A hook portion 6a is provided at one end of the locking member 6, and the set 2 4 is provided with a buckle groove 4a which can be buckled with the hook portion 6a. Preferably, the hook portion 6a of the locking member 6 can be elastically deformed, and the notch of the buckle groove 4a is arranged on the outer wall surface away from the set 1 2. The groove wall of the buckle groove 4a away from the set 2 4 can limit the detachment of the hook portion 6a, and the hook portion 6a and the buckle groove 4a can be fitted together through an arc surface line or surface.

[0037] When the locking member 6 is buckled with the set 1 2 and the set 2 4 and can limit the rotation of the set 1 2 and the set 2 4, the rotating connection part 1 5a of the tilting rod 5 is located between the rotating connection part 2 5b and the hook part 6a of the locking member 6, and the rotating connection part 2 5b of the tilting rod 5 is located between the rotating connection part 1 5a and the set 1 2.

[0038] like Figure 2 As shown, in order to facilitate unlocking of the locking member 6, the other end of the locking member 6 is set upward or recessed on the kit 2, so that an unlocking port 8 is formed between the other end of the locking member 6 and the kit 2, so that when the locking member 6 is unlocked, a finger can be inserted into the unlocking port 8 and the locking member 6 can be pried to unlock it.

[0039] In order to reduce the influence of the elastic deformation of the hook portion 6a of the locking member 6, that is, to reduce the influence of the gap when the kit 1 2 and the kit 2 4 are fitted together, in this embodiment, a groove 4b is provided on the end surface of the kit 2 4 that fits the kit 1 2, and a gasket 9 is embedded in the groove 4b. The gasket 9 is made of elastic rubber or silicone material, and the gasket 9 is higher than the end surface of the kit 2 4.

[0040] A plurality of cushion blocks 10 made of elastic rubber or silica gel are embedded in the connecting member 3. When the locking member 6 fastens the kit one 2 and the kit two 4, the cushion blocks 10 are attached to the outer walls of the kit one 2 and the kit two 4, and the angle between the rod body one 1 and the rod body two 7 during the use of the extension rod is preset. In this embodiment, the rod body one 1 and the rod body two 7 are distributed at 180°. Moreover, when the power tool vibrates during operation, the arrangement of the cushion blocks 10 and the washers 9 can effectively reduce the instability of the extension rod caused by the gap vibration between the kit one 2 and the kit two 4.

[0041] Preferably, the kit two 4 is further provided with a plug 4c that can be inserted into the kit one 2, and the plug 4c has a conical or frustum structure.

[0042] In this application, through the rotational connection between the kit one 2 and the kit two 4, the rotational installation of the up-rod 5 on the kit one 2 and the locking member 6, the rotational fastening between the locking member 6 and the kit one 2 and the kit two 4, and the surface-to-surface fitting between the kit one 2 and the kit two 4 when the locking member 6 fastens the kit one 2 and the kit two 4, when the extension rod is applied to a high-frequency vibrating power tool, it can effectively avoid the shortening of the extension rod during long-distance operation, ensuring the practicability and stability of the long-distance operation of the power tool.

[0043] For the convenience of carrying and storing the extension rod, the structural settings of the kit one 2, the kit two 4, the connecting member 3, the up-rod 5 and the locking member 6 can realize the rotational folding between the kit one 2 and the kit two 4, that is, the rotational folding between the rod body one 1 and the rod body two 7, and the unlocking and folding steps are as follows.

[0044] Step one: As Figure 2-4 shown, Figure 2 The buckling and locking state is as Figure 4 in state A. Taking the position where the hook portion 6a of the locking member 6 is buckled as a reference, insert the finger into the unlocking port 8 and bend the locking member 6 upwards. In the state where the hook portion 6a is elastically deformed, the locking member 6 rotates around the rotational connection portion two 5b, and can drive the up-rod 5 to rotate around the rotational connection portion one 5a, so that the up-rod 5 rotates through the horizontal extension line 11 of the connection line between the hook portion 6a and the rotational connection portion one 5a, and rotates to state B. At this time, the force required to turn up the locking member 6 decreases, that is, the shortest distance between the hook portion 6a and the rotational connection portion two 5b changes from small to large and then to small.

[0045] Step two: As Figure 5 shown, continue to turn up the locking member 6, and the hook portion 6a of the locking member 6 can slide out of the buckle groove 4a, realizing the separation of the locking member 6 from the kit two 4.

[0046] Step three: As Figure 6-8As shown, the upward locking member 6 is completely disengaged from the second kit 4, and the relative rotation between the second kit 4 and the connecting member 3 is not restricted by the locking member 6. At this time, both the first kit 2 and the second kit 4 can rotate relative to the connecting member 3, and rotate until the first kit 2 and the second kit 4 are on one side, the first rod 1 and the second rod 7 are on the other side, and the connecting member 3 is between the first kit 2 and the second kit 4, realizing the folding setting between the first rod 1 and the second rod 7.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention.

[0048] The above has introduced in detail the foldable extension rod of the electric tool provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the present invention and its core idea. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. The foldable extension rod of the power tool includes adjacent rod body one and rod body two; It is characterized in that, The rod body one and the rod body two are rotatably connected; A lever is installed on the rod body one, and a first rotating connection part and a second rotating connection part are arranged on the lever; The lever is rotatably connected to the rod body one through the first rotating connection part, and a locking part is rotatably connected to the second rotating connection part, and the locking part can rotatably buckle the rod body two; When the locking part rotatably buckles the rod body two and restricts the rotation of the lever and the locking part, the rod body one and the rod body two are in surface-to-surface contact, the lever and the locking part are stacked, the second rotating connection part is located between the rod body one and the first rotating connection part, and the locking part is fixedly buckled with the rod body two.

2. The foldable extension rod of the power tool according to claim 1, characterized in that, A buckle groove is arranged on the rod body two, and a hook part capable of deforming is arranged on the locking part, and the hook part and the buckle groove can be fixedly buckled; 3. The foldable extension rod of the power tool according to claim 2, characterized in that, The notch of the buckle groove is arranged on the outer wall surface away from the rod body one, and the groove wall of the buckle groove away from the rod body two can limit the hook part from detaching; 4. The foldable extension rod of the power tool according to claim 3, characterized in that, The hook part and the buckle groove are in line contact or surface contact through an arc surface; 5. The foldable extension rod of the power tool according to claim 1, wherein When the locking part fixedly buckles the rod body one and the rod body two, an unlocking opening is left between the locking part and the rod body one; 6. The foldable extension rod of the power tool according to claim 1, characterized in that, A first kit is sleeved or inserted at one end of the rod body one, and the first kit is rotatably connected to the lever; 7. The foldable extension rod of the power tool according to claim 6, wherein, A second kit is sleeved or inserted at one end of the rod body two, the second kit is rotatably connected to the first kit, and the locking part buckles the second kit; 8. The foldable extension rod of the power tool according to claim 7, wherein, When the first kit and the second kit are fixedly buckled, they are in plug-in fit, and each of the first kit and the second kit is provided with an end surface that fits when buckled. A groove is arranged on the end surface of the first kit or the second kit, and a washer is arranged in the groove, and the washer protrudes from the end surface; 9. The foldable extension rod of the power tool according to claim 8, characterized in that, A connecting piece is provided, and both the first kit and the second kit are rotatably connected to the connecting piece; 10. The foldable extension rod of the power tool according to claim 9, wherein, A plurality of cushion blocks are embedded on the connecting piece. When the locking part buckles the first kit and the second kit, the cushion blocks are attached to the outer walls of the first kit and the second kit.

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