Universal adjusting mechanism for electric screw driver and universal electric screw driver

Abstract

The utility model discloses a universal adjusting mechanism for an electric screw driver, which comprises a first support, a second support, a third support, a fourth support and a fifth support, and one end of the first support is fixed on a shell of the electric screw driver; one end of the second bracket is pivoted with the other end of the first bracket; the worm and gear mechanism comprises a worm gear and a worm which are meshed with each other, the worm is rotationally connected to the first support, and the worm gear is fixed to the second support; the double-universal-joint structure comprises a first universal joint and a second universal joint which are connected, the outer end of the first universal joint is installed on a replaceable drill bit of the electric screwdriver, and the outer end of the second universal joint is rotationally connected to the second support; and the electric screwdriver sleeve is mounted at the outer end of the second universal joint. The universal electric screw driver comprises an electric screw driver and the universal adjusting mechanism. The multi-angle operation requirement in a complex environment can be met, the operation efficiency and quality can be improved, the safety risk is reduced, and the physical burden of an operator is relieved.

Description

Technical Field

[0001] The present application relates to the technical field of electric screwdrivers, and in particular to a universal adjustment mechanism for an electric screwdriver and a universal electric screwdriver. Background Art

[0002] In the field of traditional screwdriver design and application, electric screwdrivers have always occupied an important position in many fields such as industrial production, automobile maintenance, and construction due to their high efficiency and convenience. However, with the complexity of the working environment and the refinement of the working requirements, traditional electric screwdrivers have encountered some difficult-to-overcome limitations during operation:

[0003] 1) Limited angle adjustment: The head angle of traditional electric screwdrivers is fixed, which limits their applicability in complex environments and cannot meet the needs of multi-angle operations.

[0004] 2) Low operating efficiency: The need to constantly adjust the operator's posture and position leads to low operating efficiency, especially in situations where fast and precise operations are required.

[0005] 3) Increased safety risks: When working in a small space or complex structure, a fixed-angle electric screwdriver may increase the operator's safety risks, such as collision, squeezing, etc.

[0006] 4) Limited work quality: At certain angles, it is difficult for the operator to exert sufficient force, which may lead to unstable work quality and even the need for repeated work.

[0007] 5) Increased physical exertion: Frequent posture adjustments will increase the operator's physical exertion, reduce work efficiency, and may cause fatigue-related problems. Utility Model Content

[0008] In view of this, the embodiments of the present application provide a universal adjustment mechanism for an electric screwdriver and a universal electric screwdriver to solve the technical problems existing in the background technology.

[0009] According to a first aspect of an embodiment of the present application, a universal adjustment mechanism for an electric screwdriver is provided, the universal adjustment mechanism comprising:

[0010] A first bracket, one end of which is fixed to the housing of the electric screwdriver;

[0011] A second bracket, one end of which is pivotally connected to the other end of the first bracket;

[0012] A worm gear mechanism, comprising a meshing worm wheel and a worm, wherein the worm is rotatably connected to the first bracket, and the worm wheel is fixed to the second bracket;

[0013] A double universal joint structure, comprising a first universal joint and a second universal joint connected to each other, wherein the outer end of the first universal joint is mounted on the replaceable drill bit of the electric screwdriver, and the outer end of the second universal joint is rotatably connected to the second bracket; and

[0014] An electric screwdriver sleeve is mounted on the outer end of the second universal joint.

[0015] Optionally, the rear end of the first bracket is fixed by tightening the first bracket and the housing of the electric screwdriver with set screws from three directions.

[0016] Optionally, a connecting bracket is fixed to the front end of the first bracket, and the second bracket is pivotally connected to the connecting bracket.

[0017] Optionally, the connecting bracket is fixed to the first bracket by bolts.

[0018] Optionally, an adjustable knob is provided at one end of the worm.

[0019] Optionally, the heads of the first universal joint and the second universal joint can be bent within a range of -45° to 45° in a plane.

[0020] Optionally, when the first universal joint and the second universal joint are connected via a square rod, the middle can be telescopic, and the square rod frame can be telescopic in the square hole.

[0021] Optionally, the electric screwdriver sleeve is used to tighten nuts with a diameter of 3-6 mm.

[0022] According to a second aspect of an embodiment of the present application, a universal electric screwdriver is provided, comprising:

[0023] Electric screwdriver;

[0024] In the universal adjustment mechanism described in the first aspect, one end of the first bracket is fixed to the housing of the electric screwdriver, and the outer end of the first universal joint is installed on the replaceable drill bit of the electric screwdriver.

[0025] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0026] It can be seen from the above embodiments that the present application adjusts the worm gear to rotate the worm, thereby driving the worm wheel and the second bracket to rotate, thereby changing the bending direction of the head. The self-locking mechanism (worm gear mechanism) ensures that the head angle is stable. Electric screwdriver sleeves of different sizes can be replaced as needed to adapt to the tightening of nuts of different diameters. This design can not only meet the multi-angle operation requirements in complex environments, but also improve the operation efficiency and quality, reduce safety risks, and reduce the physical burden of operators.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 is a front view according to an exemplary embodiment.

[0030] Figure 2 is a top view according to an exemplary embodiment.

[0031] The reference numerals in the figures are:

[0032] 100. electric screwdriver; 101. housing; 102. replaceable drill bit;

[0033] 200. Universal adjustment mechanism; 201. First bracket; 202. Second bracket; 203. Worm gear; 204. Worm; 205. First universal joint; 206. Second universal joint; 207. Electric screwdriver sleeve; 208. Connecting bracket; 209. Adjustable knob. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0035] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0036] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0037] refer to Figure 1 and Figure 2 The utility model embodiment provides a universal adjustment mechanism 200 for an electric screwdriver 100, the universal adjustment mechanism 200 comprises: a first bracket 201, a second bracket 202, a worm gear 203 and a worm 204 mechanism, a double universal joint structure, and an electric screwdriver sleeve 207. One end of the first bracket 201 is fixed to the housing of the electric screwdriver 100; one end of the second bracket 202 is pivotally connected to the other end of the first bracket 201; the worm gear 203 and the worm 204 mechanism include meshing worm gears 203 and The worm 204 is rotatably connected to the first bracket 201, and the worm wheel 203 is fixed to the second bracket 202; the double universal joint structure includes a first universal joint 205 and a second universal joint 206 connected to each other, the outer end of the first universal joint 205 is mounted on the replaceable drill bit 102 of the electric screwdriver 100, and the outer end of the second universal joint 206 is rotatably connected to the second bracket 202; the electric screwdriver sleeve 207 is mounted on the outer end of the second universal joint 206. By adjusting the worm wheel 203 and the worm 204, the worm 204 is rotated, and then the worm wheel 203 and the second bracket 202 are driven to rotate, thereby changing the bending direction of the head. The self-locking mechanism ensures that the head angle is stable. The electric screwdriver sleeve 207 of different sizes is replaced as needed to adapt to the tightening operation of nuts of different diameters.

[0038] In one embodiment, the rear end of the first bracket 201 can be well fixed to the housing 101 of the electric screwdriver 100 by tightening the first bracket 201 and the housing 101 of the electric screwdriver 100 with set screws from three directions. After loosening the set screws in three directions, the first bracket 201 can be rotated, so that the entire universal adjustment mechanism 200 can be rotated to adapt to different working angles.

[0039] In one embodiment, a connecting bracket 208 is fixed to the front end of the first bracket 201 , and the second bracket 202 is pivotally connected to the connecting bracket 208 .

[0040] In one embodiment, the connecting bracket 208 is fixed to the first bracket 201 by bolts. The connecting bracket 208 has a central axis, and the worm wheel 203 is sleeved on the central axis. A gasket and a bolt are provided at the upper end of the central axis. The gasket blocks the upper surface of the worm wheel 203. By tightening the bolt, the worm wheel 203 will not move in the axial direction. The lower ends of the second bracket 202 and the worm wheel 203 have three round holes, and screws are screwed into them to connect and fix the second bracket 202 and the worm wheel 203. When the worm wheel 203 rotates, it can drive the second bracket 202 to rotate.

[0041] In one embodiment, an adjustable knob 209 is provided at one end of the worm 204. The adjustable knob 209 can facilitate driving the worm, thereby adjusting the angle of the front universal joint. The adjustable knob can be provided with patterns, so that it is easier for people to twist it.

[0042] In one embodiment, the heads of the first universal joint 205 and the second universal joint 206 can be bent in a range of -45° to 45° in a plane, and the angle of the front universal joint can be adjusted by the adjustable knob 209 on the worm 204, and the self-locking is used to ensure that the position will not change during rotation, and the angle can only be adjusted by the adjustable knob 209. The adjustable knob 209 is manually adjusted to rotate the worm 204, thereby rotating the worm wheel 203, thereby changing the bending direction of the head, and the self-locking performance of the worm wheel 203 and the worm 204 keeps the head direction stable during use.

[0043] In one embodiment, when the first universal joint 205 and the second universal joint 206 are connected by a square rod, the middle can be extended and retracted, and the square rod is extended and retracted in the square hole. The first universal joint 205 and the second universal joint 206 have the same structure, one end of which is a square rod and the other end is a square hole, which are used to connect to each other and to the second bracket 202 and the electric screwdriver sleeve 207. The square rod of the first universal joint 205 is connected to the replaceable drill bit 102, and the square hole is connected to the square rod of the second universal joint 206. The square hole of the second universal joint 206 is rotatably connected to the second bracket 202, and the square hole of the second universal joint 206 can be covered with electric screwdriver sleeves 207 of different sizes.

[0044] In addition, when the square rods of the first universal joint 205 and the second universal joint 206 are connected, the middle can be extended and retracted, and the square rod frame can be extended and retracted in the square hole to adapt to the change in the angle of the front head, and can be used to transfer the rotational torque from the output shaft of the electric screwdriver 100 to the electric screwdriver sleeve 207 of the head.

[0045] In one embodiment, the electric screwdriver sleeve 207 is used to tighten nuts with a diameter of 3-6 mm, and only a different standard electric screwdriver sleeve 207 needs to be replaced.

[0046] The embodiment of the utility model also provides a universal electric screwdriver 100, comprising: an electric screwdriver 100, the above-mentioned universal adjustment mechanism 200, one end of the first bracket 201 is fixed to the housing of the electric screwdriver 100, and the outer end of the first universal joint 205 is installed on the replaceable drill bit 102 of the electric screwdriver 100.

[0047] The electric screwdriver 100 has two upper and lower buttons, one of which controls the motor to change the rotation direction and makes the head rotate in different directions through the transmission structure, and the other is responsible for controlling the switch of the motor.

[0048] The working principle of the utility model is as follows:

[0049] Assemble the electric screwdriver 100 with the universal adjustment mechanism 200, and fix the first bracket 201 and the head housing 101 of the electric screwdriver 100 by the set screws. Adjust the adjustable knob 209 next to the worm gear 203 and the worm 204 to rotate the worm 204, thereby driving the worm gear 203 and the second bracket 202 to rotate, thereby changing the bending direction of the head. The self-locking mechanism ensures that the head angle remains stable. Replace the electric screwdriver sleeve 207 of different sizes as needed to adapt to the tightening operation of nuts of different diameters.

[0050] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The description and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0051] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A universal adjustment mechanism for an electric screwdriver, characterized in that: The universal adjustment mechanism comprises: A first bracket, one end of which is fixed to the housing of the electric screwdriver; A second bracket, one end of which is pivotally connected to the other end of the first bracket; A worm gear mechanism, comprising a meshing worm wheel and a worm, wherein the worm is rotatably connected to the first bracket, and the worm wheel is fixed to the second bracket; A double universal joint structure, comprising a first universal joint and a second universal joint connected to each other, wherein the outer end of the first universal joint is mounted on the replaceable drill bit of the electric screwdriver, and the outer end of the second universal joint is rotatably connected to the second bracket; and An electric screwdriver sleeve is mounted on the outer end of the second universal joint.

2. A universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: The rear end of the first bracket is fixed by tightening the first bracket and the housing of the electric screwdriver with set screws from three directions.

3. The universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: A connecting bracket is fixed to the front end of the first bracket, and the second bracket is pivotally connected to the connecting bracket.

4. A universal adjustment mechanism for an electric screwdriver according to claim 3, characterized in that: The connecting bracket is fixed to the first bracket by bolts.

5. The universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: An adjustable knob is provided at one end of the worm.

6. The universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: The heads of the first universal joint and the second universal joint can be bent within a range of -45° to 45° in a plane.

7. The universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: When the first universal joint and the second universal joint are connected via a square rod, the middle can be telescopic, and the square rod frame can be telescopic in the square hole.

8. The universal adjustment mechanism for an electric screwdriver according to claim 1, characterized in that: The electric screwdriver sleeve is used to tighten nuts with a diameter of 3-6 mm.

9. A universal electric screwdriver, characterized in that: include: Electric screwdriver; The universal adjustment mechanism according to any one of claims 1 to 8, wherein one end of the first bracket is fixed to a housing of the electric screwdriver, and an outer end of the first universal joint is mounted on a replaceable drill bit of the electric screwdriver.

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