Bearing type handheld electric hammer drill

Abstract

The utility model relates to the technical field of electric hammer drills, in particular to a bearing type handheld electric hammer drill which comprises a handheld electric hammer drill body and a connecting notch formed in the end of the handheld electric hammer drill body, a connecting insertion block is embedded in the connecting notch, an electric hammer drill supporting assembly is rotationally connected into the connecting insertion block, and the electric hammer drill supporting assembly is connected with the handheld electric hammer drill body. The electric hammer drill supporting assembly comprises a main supporting arm connected with the connecting inserting block, an auxiliary supporting arm connecting part arranged at the end of the main supporting arm, an auxiliary supporting arm arranged in the auxiliary supporting arm connecting part in a sleeved mode and capable of sliding along the interior of the auxiliary supporting arm connecting part, and a positioning rotary knob arranged at the end of the auxiliary supporting arm and used for fixing the auxiliary supporting arm. The auxiliary supporting arm slides along the auxiliary supporting arm connecting part, and when the total length of the main supporting arm and the auxiliary supporting arm connecting part is consistent with the arm extension of the user, the positioning knob locks the main supporting arm and the auxiliary supporting arm connecting part through rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hammer drills, in particular to a supporting handheld electric hammer drill. Background Art

[0002] The electric hammer drill is a handheld power tool with both impact and drilling functions. Compared with traditional single-function power tools, it has the characteristics of multi-function, so it is widely loved by operators;

[0003] When using an electric hammer drill to perform drilling operations on the top of the work surface or at a high position, the user is required to keep the elbow raised for a long time. During this process, the operator's elbow is subjected to greater force, which can easily cause muscle fatigue and reduce the worker's work efficiency. For this reason, we propose a supported handheld electric hammer drill. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a supported handheld electric hammer drill to solve the problem that when using an electric hammer drill to perform drilling operations on the top of a work surface or at a high position, the operator's elbow is subjected to greater force, which easily causes muscle fatigue and reduces the work efficiency of the operator.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a supporting handheld electric hammer drill, comprising a handheld electric hammer drill, and a connecting slot opened at the end of the handheld electric hammer drill, a connecting plug is nested inside the connecting slot, an electric hammer drill support assembly is rotatably connected inside the connecting plug, and the electric hammer drill support assembly comprises a main support arm connected to the connecting plug, a secondary support arm connecting portion arranged at the end of the main support arm, a secondary support arm sleeved inside the secondary support arm connecting portion and capable of sliding along the secondary support arm connecting portion, and a positioning knob arranged at the end of the secondary support arm for fixing the secondary support arm;

[0006] The secondary supporting arm slides along the secondary supporting arm connecting portion, and when the total length of the main supporting arm and the connecting portion of the secondary supporting arm is consistent with the user's arm span, the positioning knob locks the connecting portion of the main supporting arm and the secondary supporting arm by rotating.

[0007] Preferably, the connection notch and the connection plug-in block are detachably connected in a straight-insertion nested manner, and the connection notch and the connection plug-in block are fixed by friction.

[0008] Preferably, the connecting plug block is rotatably connected to the main support arm via a rotating shaft, and the main support arm can rotate within a range of ±° relative to the connecting plug block.

[0009] Preferably, both sides of the main support arm are provided with sliding grooves, and the side wall ends of the auxiliary support arm protrude outward to form protrusions, and the protrusions are nested in the sliding grooves on both sides of the main support arm.

[0010] Preferably, the inner wall surface of the auxiliary supporting arm connecting portion conflicts with the outer wall surface of the auxiliary supporting arm, and both the inner wall surface of the auxiliary supporting arm connecting portion and the outer wall surface of the auxiliary supporting arm are ground.

[0011] Preferably, the electric hammer drill support assembly also includes a positioning auxiliary gasket, which is sleeved on the outside of the positioning knob, and the positioning knob is pressed onto the surface of the main support arm, and the contact surface between the main support arm and the positioning knob is ground.

[0012] Preferably, a supporting foot is formed at the end of the secondary supporting arm, and the supporting foot is designed to be arc-shaped.

[0013] Preferably, an anti-skid pad is adhered to the outer surface of the supporting foot, and a plurality of groups of staggered notches are formed on the surface of the anti-skid pad.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] 1. In the utility model, an electric hammer drill support assembly is provided, and the secondary support arm of the electric hammer drill support assembly slides along the secondary support arm connection part. When the total length of the main support arm and the secondary support arm connection part is consistent with the user's arm span, the positioning knob locks the main support arm and the secondary support arm connection part by rotating. When the electric hammer drill is erected, the locked main support arm and the secondary support arm connection part rely on the user's shoulder to support the electric hammer drill, thereby preventing the user's elbow from being overly tired during use and improving the user's work efficiency.

[0016] 2. In the utility model, the main support arm can rotate at an angle of ±60° relative to the connecting block. When drilling, the main support arm can rotate to a certain extent as the user's body moves, thereby improving the flexibility at work and the convenience of use for the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a handheld electric hammer drill of the utility model;

[0019] Figure 3 It is a schematic diagram of the use state of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the electric hammer drill support assembly of the utility model.

[0021] Among them: 1. Handheld electric hammer drill; 2. Connection slot; 3. Connection plug; 4. Electric hammer drill support assembly; 41. Main support arm; 42. Auxiliary support arm connection; 43. Auxiliary support arm connection; 44. Positioning knob; 45. Positioning auxiliary gasket; 46. Support foot; 47. Anti-slip gasket. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0023] Example:

[0024] See also Figure 1 - Figure 4 A supporting handheld electric hammer drill comprises a handheld electric hammer drill 1, and a connecting slot 2 provided at the end of the handheld electric hammer drill 1, a connecting plug 3 is nested inside the connecting slot 2, an electric hammer drill support assembly 4 is rotatably connected inside the connecting plug 3, and the electric hammer drill support assembly 4 comprises a main support arm 41 connected to the connecting plug 3, a secondary support arm connecting portion 42 provided at the end of the main support arm 41, a secondary support arm 43 sleeved inside the secondary support arm connecting portion 42 and slidable along the secondary support arm connecting portion 42, and a positioning knob 44 provided at the end of the secondary support arm 43 for fixing the secondary support arm 43;

[0025] The secondary supporting arm 43 slides along the secondary supporting arm connecting portion 42. When the total length of the main supporting arm 41 and the secondary supporting arm connecting portion 42 is consistent with the user's arm span, the positioning knob 44 locks the main supporting arm 41 and the secondary supporting arm connecting portion 42 by rotating.

[0026] The connection slot 2 and the connection block 3 are detachable and directly nested, and are fixed by friction. When performing top or tilting operations, the connection block 3 can be inserted into the connection slot 2 to connect the electric hammer drill support assembly 4 to the connection slot 2. When performing ordinary operations, the connection slot 2 can be removed again to achieve the use of the connection slot 2 alone.

[0027] The connecting block 3 and the main support arm 41 are rotatably connected via a rotating shaft. The main support arm 41 can rotate at an angle of ±60° relative to the connecting block 3. When drilling, the main support arm 41 can rotate to a certain extent as the user's body moves, thereby improving flexibility at work and convenience for operators.

[0028] Slide grooves are provided on both sides of the main support arm 41, and the side wall ends of the auxiliary support arm 43 protrude outward to form protrusions, which are nested in the slide grooves on both sides of the main support arm 41. Through the mutual cooperation of the protrusions and the slide grooves, the ends of the auxiliary support arm 43 are restricted by the main support arm 41. Under the joint restriction of the main support arm 41 and the auxiliary support arm connecting part 42, the auxiliary support arm 43 is stably set in the main support arm 41.

[0029] The inner wall surface of the auxiliary support arm connection part 42 conflicts with the outer wall surface of the auxiliary support arm 43, and the inner wall surface of the auxiliary support arm connection part 42 and the outer wall surface of the auxiliary support arm 43 are both ground. Under the action of friction, the auxiliary support arm connection part 42 and the auxiliary support arm 43 can keep their own positions fixed after adjusting their relative positions, which is convenient for the subsequent locking of the relative positions of the two by the positioning knob 44.

[0030] The electric hammer drill support assembly 4 also includes a positioning auxiliary gasket 45, which is sleeved on the outside of the positioning knob 44, and the positioning knob 44 is pressed onto the surface of the main support arm 41. The contact surface between the main support arm 41 and the positioning knob 44 is ground. Under the downward pressure of the positioning knob 44, the positioning auxiliary gasket 45 increases the contact surface with the main support arm 41, thereby better limiting the relative position of the main support arm 41 and the auxiliary support arm 43, and ensuring the contact stability between the main support arm 41 and the auxiliary support arm 43.

[0031] A supporting foot 46 is formed at the end of the auxiliary support arm 43, and the supporting foot 46 can increase the contact area with the user's shoulder so that the auxiliary support arm 43 can stably contact the user's shoulder. The supporting foot 46 is designed to be arc-shaped, and the arc-shaped supporting foot 46 can contact the user's shoulder more fully, while allowing the user to make a certain degree of front and rear angle adjustment when using it.

[0032] An anti-skid pad 47 is adhered to the outer surface of the support foot 46. The surface of the anti-skid pad 47 is provided with a plurality of groups of staggered grooves. The staggered grooves can increase the friction between the anti-skid pad 47 and the operator's shoulder when in contact, thereby ensuring the stability during contact and avoiding the problem of slipping during use.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A support-type handheld electric hammer drill, characterized in that: The invention comprises a handheld electric hammer drill (1), and a connection slot (2) provided at the end of the handheld electric hammer drill (1), wherein a connection plug (3) is nested inside the connection slot (2), and an electric hammer drill support assembly (4) is rotatably connected inside the connection plug (3), wherein the electric hammer drill support assembly (4) comprises a main support arm (41) connected to the connection plug (3), a secondary support arm connection portion (42) provided at the end of the main support arm (41), a secondary support arm (43) sleeved inside the secondary support arm connection portion (42) and capable of sliding along the secondary support arm connection portion (42), and a positioning knob (44) provided at the end of the secondary support arm (43) for fixing the secondary support arm (43); The secondary support arm (43) slides along the secondary support arm connecting portion (42), and when the total length of the main support arm (41) and the secondary support arm connecting portion (42) is consistent with the user's arm span, the positioning knob (44) locks the main support arm (41) and the secondary support arm connecting portion (42) by rotating.

2. A support-type handheld electric hammer drill according to claim 1, characterized in that: The connection notch (2) and the connection plug-in block (3) are connected in a detachable straight-insertion nested manner, and the connection notch (2) and the connection plug-in block (3) are fixed by friction.

3. The support-type handheld electric hammer drill according to claim 1, characterized in that: The connecting plug block (3) and the main support arm (41) are rotatably connected via a rotating shaft, and the main support arm (41) can rotate within a range of ±60° relative to the connecting plug block (3).

4. A support-type handheld electric hammer drill according to claim 3, characterized in that: Slide grooves are provided on both sides of the main support arm (41), and the side wall ends of the auxiliary support arm (43) protrude outwards to form protrusions, which are nested in the slide grooves on both sides of the main support arm (41).

5. The support-type handheld electric hammer drill according to claim 4, characterized in that: The inner wall surface of the auxiliary support arm connection portion (42) abuts against the outer wall surface of the auxiliary support arm (43), and both the inner wall surface of the auxiliary support arm connection portion (42) and the outer wall surface of the auxiliary support arm (43) are ground.

6. A support-type handheld electric hammer drill according to claim 5, characterized in that: The electric hammer drill support assembly (4) further comprises a positioning auxiliary gasket (45), the positioning auxiliary gasket (45) is sleeved on the outside of the positioning knob (44), and the positioning knob (44) is pressed onto the surface of the main support arm (41), and the contact surface between the main support arm (41) and the positioning knob (44) is ground.

7. A support-type handheld electric hammer drill according to claim 6, characterized in that: A supporting foot (46) is formed at the end of the secondary supporting arm (43), and the supporting foot (46) is designed to be arc-shaped.

8. The support-type handheld electric hammer drill according to claim 7, characterized in that: An anti-skid pad (47) is adhered to the outer surface of the support foot (46), and a plurality of groups of interlaced notches are provided on the surface of the anti-skid pad (47).

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