Electric screwdriver bit

Abstract

The utility model discloses an electric screwdriver bit which comprises a tail part and a head part which are arranged up and down, the tail is used for being connected with an electric screwdriver body in a matched mode, and the head comprises a head body, a movable elastic block and an elastic piece. The head main body comprises an inserting part which is arranged at the end part of the lower end and of which the diameter shrinks inwards; a movable groove which extends up and down in the axial direction is formed in the side wall of the head main body; the movable elastic block is arranged in the movable groove in a penetrating mode and can move up and down in a reciprocating mode. The elastic piece abuts against the movable elastic block, so that the lower end of the movable elastic block moves downwards to be located on the horizontal peripheral side of the inserting part. And the lower end of the movable elastic block is pressed to move upwards and is positioned on the upper side of the inserting part. The electric screwdriver head can be used for locking a magnet base with a notch and a groove, after the electric screwdriver head is simply rotated to enable the movable elastic block to be aligned with the notch, the movable elastic block automatically moves downwards to be clamped into the notch under the elastic force of the elastic piece, and therefore connection between the electric screwdriver head and the magnet base can be conveniently and rapidly achieved, and installation of the magnet base is smoothly conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of electric screwdriver bits, in particular to an electric screwdriver bit. Background Art

[0002] Electric screwdrivers, also known as electric screwdrivers, are electric tools used to tighten and loosen parts. This electric tool is equipped with a mechanism to adjust and limit torque. It is mainly used in assembly lines and is one of the essential tools for most manufacturing companies.

[0003] Most of the existing electric screwdriver bits have a connection slot at the rear end, which is adapted to be connected with the rotating connection column on the electric screwdriver body for use. Figure 1 The electric screwdriver bit 1' shown can be used to lock the LED soft module magnet seat. The tail end of the electric screwdriver bit 1' is a common structure with a connecting groove. The two opposite sides of the head of the electric screwdriver bit 1' have protruding blocks 11'.

[0004] In the production process of LED soft modules, a magnet seat 2' is usually installed at the bottom of the soft module; in the production process, since the magnet seat 2' has a groove with two notches 21', it is generally used Figure 1 The electric screwdriver head 1' shown is manually locked, but since the manual force and accuracy cannot be precisely controlled, the electric screwdriver head 1' cannot be well aligned with the magnet seat 2' during locking, that is, before the electric screwdriver head 1' is inserted into the magnet seat 2', it is necessary to adjust the position of the rotating electric screwdriver head 1' in real time so that the two blocks 11' of the electric screwdriver head 1' can be aligned with the notches 21' of the magnet seat 2' before they can be plugged and connected, which is time-consuming, labor-intensive and inefficient. Utility Model Content

[0005] The utility model aims to provide an electric screwdriver bit, which has the advantages of being easy to use and greatly improving working efficiency.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] An electric screwdriver head, comprising a tail portion and a head portion arranged up and down; the tail portion is used for adapting and connecting with the electric screwdriver body, and the head portion comprises a head body, a movable spring block and an elastic member;

[0008] The head body comprises a plug-in portion which is arranged at the lower end and has a reduced diameter, and a movable groove which extends axially up and down is arranged in the side wall of the head body;

[0009] The movable spring block can be reciprocated up and down and is inserted into the movable groove. The upper end of the movable spring block is anti-droppingly matched with the upper side of the movable groove, and the elastic member is arranged between the upper end of the movable spring block and the upper end of the movable groove.

[0010] The elastic member presses against the movable spring block, so that the lower end of the movable spring block moves downward and is located at the horizontal outer peripheral side of the plug-in portion; the lower end of the movable spring block is pressed to move upward and is located at the upper side of the plug-in portion.

[0011] Furthermore, there are more than two movable spring blocks, elastic members and movable grooves, and the movable grooves are distributed at intervals in the circumferential direction along the central axis of the head body.

[0012] Furthermore, there are eight movable grooves, which are evenly distributed on the side wall of the head body at circumferential intervals; and there are also eight corresponding movable spring blocks and elastic members.

[0013] Furthermore, the head body includes an upper body and a lower body that are axially detachably locked; the top of the upper body is connected to the tail of the electric screwdriver head, and the bottom surface of the upper body is concavely provided with an installation cavity; the movable groove passes through the lower body and is connected to the installation cavity.

[0014] Furthermore, the lower body includes a mounting portion, an inverted frustum portion and the plug-in portion which are sequentially arranged up and down; the diameter of the mounting portion is smaller than the top diameter of the inverted frustum portion, and the diameter of the plug-in portion is equal to the bottom diameter of the inverted frustum portion; the movable groove passes through the mounting portion, the inverted frustum portion and the plug-in portion up and down, and the movable groove radially connects the mounting portion and the outside of the plug-in portion, and the inverted frustum portion is located radially outside the movable groove to form a limiting portion; the movable spring block has a protrusion protruding from the outside of the mounting portion and the plug-in portion.

[0015] Furthermore, the protrusion is in the form of a rectangular body, adapted to fit the notch of the magnet seat; and the movable spring block is in the form of a cylinder radially inside the protrusion, and the cylinder is limited to the radially inner part of the movable groove.

[0016] Furthermore, a clearance hole is provided on the side wall of the installation cavity corresponding to the movable groove; a limiting protrusion is radially protruded outward from the upper end of the movable spring block, and the limiting protrusion moves up and down in the clearance hole; and the top surface of the inverted frustum forms a limiting plane of the limiting protrusion.

[0017] Furthermore, the elastic member is a spring, which is installed in a movable groove on the mounting portion, with one end of the spring abutting against the bottom wall of the mounting cavity and the other end abutting against the upper end of the movable spring block.

[0018] Furthermore, it also includes a mounting screw; a mounting hole that passes through the top of the lower body is provided at the center of the bottom of the lower body, and a locking hole with an internal thread is provided at the center of the bottom of the upper body mounting cavity; the mounting screw passes through the mounting hole and is locked in the locking hole, thereby coaxially locking and fixing the lower body and the upper body into one.

[0019] Furthermore, a magnet is installed in the middle of the plug-in portion.

[0020] After adopting the above technical solution, the electric screwdriver bit can be used to lock the magnet seat with a notched groove. When the electric screwdriver bit is used to lock the magnet seat, the electric screwdriver bit is pressed down against the magnet seat. When the movable spring block is just aligned with the notch, the connection between the electric screwdriver bit and the magnet seat can be realized, and the electric screwdriver bit can be directly used to install the magnet seat. When the movable spring block is not aligned with the notch, the movable spring block can be pressed to move up to the top of the plug-in part and compress the elastic member without affecting the plug-in fit between the plug-in part of the electric screwdriver bit and the groove of the magnet seat. At this time, the electric screwdriver bit can be rotated to make the movable spring block aligned with the notch, and the movable spring block automatically moves down under the elastic force of the elastic member and snaps into the notch, thereby conveniently and quickly realizing the connection between the electric screwdriver bit and the magnet seat, smoothly installing the magnet seat, and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The existing electric screwdriver bit structure;

[0022] Figure 2 A three-dimensional diagram of an embodiment of the utility model;

[0023] Figure 3 An exploded view of an embodiment of the utility model;

[0024] Figure 4 It is a front view of an embodiment of the utility model;

[0025] Figure 5 A three-dimensional diagram of an embodiment of the utility model connected to a magnet base;

[0026] Figure 6 for Figure 5 Exploded diagram of

[0027] Figure 7 It is a cross-sectional view (I) of an embodiment of the utility model;

[0028] Figure 8 This is a cross-sectional view of an embodiment of the utility model (II)

[0029] Explanation of reference numerals: electric screwdriver head 10, tail 101, head 102, head body 1, upper body 1a, lower body 1b, plug-in portion 11, movable groove 12, mounting cavity 13, clearance hole 131, mounting portion 14, inverted frustum portion 15, limiting portion 151, limiting plane 152, mounting hole 16, lock hole 17, magnet 18, slot 19, movable spring block 2, protrusion 21, cylinder 22, limiting protrusion 23, elastic member 3, magnet seat 20, groove 201, notch 202. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] like Figures 2 to 8 As shown, an electric screwdriver head 10 of the utility model comprises a tail portion 101 and a head portion 102 which are arranged up and down; the tail portion 101 is used for adapting and connecting with the electric screwdriver body (not shown), and the tail portion 101 can be an existing structure with a connecting groove.

[0032] The utility model mainly improves the head 102. The head 102 includes a head body 1, a movable spring block 2 and an elastic member 3.

[0033] The head body 1 comprises an inserting portion 11 which is arranged at the lower end and has a reduced diameter, and a movable groove 12 which extends axially up and down is arranged in the side wall of the head body 1 .

[0034] The movable spring block 2 can be reciprocated up and down and penetrate into the movable groove 12. The upper end of the movable spring block 2 is anti-droppingly engaged with the upper side of the movable groove 12, and an elastic member 3 is arranged between the upper end of the movable spring block 2 and the upper end of the movable groove 12.

[0035] The elastic member 3 presses against the movable spring block 2 , causing the lower end of the movable spring block 2 to move downward and be located at the horizontal outer peripheral side of the plug-in portion 11 ; the lower end of the movable spring block 2 is pressed to move upward and be located at the upper side of the plug-in portion 11 .

[0036] By this, see Figure 5The electric screwdriver bit 10 of this embodiment is used to lock the magnet seat 20 with the groove 201 having two notches 202. Therefore, the movable spring block 2, the elastic member 3 and the movable groove 12 of the electric screwdriver bit 10 of this embodiment can be more than two, and each movable groove 12 is distributed at intervals along the central axis of the head body 1. Therefore, when the electric screwdriver bit 10 is used to lock the magnet seat 20, the electric screwdriver bit 10 is pressed down against the magnet seat 20. When the two movable spring blocks 2 are just aligned and inserted into the two notches 202, the connection between the electric screwdriver bit 10 and the magnet seat 20 can be achieved, and the electric screwdriver bit 10 can be directly used to install the magnet seat 20. When the two movable spring blocks 2 are not aligned with the two notches 202, the two movable spring blocks 2 can be pressed up to the top of the plug-in portion 11 and compress the elastic member 3 without affecting the plug-in fit between the plug-in portion 11 of the electric screwdriver head 10 and the groove 201 of the magnet seat 20 (the diameter of the plug-in portion 11 is not greater than the inner diameter of the groove 201). At this time, the electric screwdriver head 10 can be rotated to align the two movable spring blocks 2 with the notches 202, and the movable spring blocks 2 automatically move down and snap into the two notches 202 under the elastic force of the elastic member 3, thereby conveniently and quickly realizing the connection between the electric screwdriver head 10 and the magnet seat 20, and smoothly installing the magnet seat 20.

[0037] In order to facilitate the quick alignment of the electric screwdriver head 10 and the magnet seat 20 and reduce the rotation angle, the movable grooves 12 of this embodiment can be reasonably set to eight according to the circumference of the magnet seat 20 and the size of the notch 202, and each movable groove 12 is evenly spaced and distributed on the side wall of the head body 1 in the circumferential direction. The corresponding movable spring blocks 2 and elastic members 3 are also eight, so when in use, the electric screwdriver head 10 is pressed down against the magnet seat 20. During this process, the operator does not need to deliberately align the slots of the product magnet seat 20. Only a slight rotation and adjustment can make any two movable spring blocks 2 fit into the notch 202, and the remaining movable spring blocks 2 are pressed upward, and the elastic members 3 are compressed, so that the locking operation can be performed, which greatly improves the operation efficiency.

[0038] Of course, the number of the movable spring block 2, the elastic member 3 and the movable groove 12 can also be one, and can be adaptively adjusted and modified according to the structure of the product such as the magnet seat 20.

[0039] like Figure 3 , Figure 7 and Figure 8 As shown, in order to facilitate assembly and production, the head body 1 may include an upper body 1a and a lower body 1b that are axially detachable and lockable; the top of the upper body 1a is connected to the tail 101 of the electric screwdriver head 10, and the bottom surface of the upper body 1a is concavely provided with an installation cavity 13; the movable groove 12 passes through the lower body 1b and is connected to the installation cavity 13. Therefore, after the upper and lower bodies 1a and 1b are separated, each movable spring block 2 can be conveniently installed in the movable groove 12 of the lower body 1b.

[0040] Specifically, the lower body 1 b may include a mounting portion 14 , an inverted frustum portion 15 , and the plug-in portion 11 , which are sequentially arranged up and down.

[0041] The diameter of the mounting portion 14 is smaller than the top diameter of the inverted frustum portion 15, and the diameter of the plug-in portion 11 is equal to the bottom diameter of the inverted frustum portion 15; the movable groove 12 passes through the mounting portion 14, the inverted frustum portion 15 and the plug-in portion 11 from top to bottom, and the movable groove 12 radially connects the mounting portion 14 and the outer side of the plug-in portion 11, and the inverted frustum portion 15 is located radially outside the movable groove 12 to form a limiting portion 151 to limit the movable spring block 2 in the radial direction; the movable spring block 2 has a protruding portion 21 protruding from the outer side of the mounting portion 14 and the plug-in portion 11, and the protruding portion 21 is a rectangular body, which can be adapted to the notch 202 of the magnet seat 20, and the movable spring block 2 can be a cylinder 22 on the radial inner side of the protruding portion 21, and the cylinder 22 can be limited to the radial inner part of the movable groove 12, which can also prevent the movable spring block 2 from falling out of the movable groove 12 in the radial direction.

[0042] like Figure 2 , Figure 7 and Figure 8 The side wall of the installation cavity 13 is provided with a clearance hole 131 corresponding to the movable groove 12; the upper end of the movable spring block 2 is radially protruded with a limiting protrusion 23, and the limiting protrusion 23 moves up and down in the clearance hole 131; the top surface of the inverted frustum 15 forms a limiting plane 152 for limiting the limiting protrusion 23. The limiting protrusion 23 is provided to achieve the anti-dropping cooperation between the upper end of the movable spring block 2 and the upper side of the movable groove 12.

[0043] The elastic member 3 of this embodiment is a spring, which is installed in the movable groove 12 on the mounting portion 14 , with one end of the spring abutting against the bottom wall of the mounting cavity 13 and the other end abutting against the upper end of the movable spring block 2 .

[0044] like Figure 7 and Figure 8 , the lower body 1b and the upper body 1a can be locked and fixed by installing screws (not shown); specifically, the bottom center of the lower body 1b is provided with a mounting hole 16 that passes through the top of the lower body 1b, and the bottom center of the upper body 1a mounting cavity 13 is provided with a locking hole 17 with an internal thread; the mounting screw passes through the mounting hole 16 and is locked in the locking hole 17, so that the lower body 1b and the upper body 1a are coaxially locked and fixed as a whole.

[0045] like Figure 3 , Figure 6 and Figure 7 As shown, a magnet 18 may be installed in the middle of the plug-in portion 11. The magnet 18 may be fixedly mounted in a card slot 19 at the center surrounded by eight movable spring blocks 2, so as to facilitate the adsorption of the product magnet seat 20 and improve the working efficiency.

[0046] In summary, the electric screwdriver bit 10 of the utility model is cleverly designed and easy to use, and can greatly improve work efficiency.

[0047] The above is only a preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, equivalent changes and modifications without departing from the principle of the utility model should still fall within the protection scope of the utility model.

Claims

1. An electric screwdriver head, comprising a tail portion and a head portion arranged up and down; the tail portion is adapted to be connected with the electric screwdriver body, characterized in that: The head comprises a head body, a movable spring block and an elastic member; The head body comprises a plug-in portion which is arranged at the lower end and has a reduced diameter, and a movable groove which extends axially up and down is arranged in the side wall of the head body; The movable spring block can be reciprocated up and down and is inserted into the movable groove. The upper end of the movable spring block is anti-droppingly matched with the upper side of the movable groove, and the elastic member is arranged between the upper end of the movable spring block and the upper end of the movable groove. The elastic member presses against the movable spring block, so that the lower end of the movable spring block moves downward and is located at the horizontal outer peripheral side of the plug-in portion; the lower end of the movable spring block is pressed to move upward and is located at the upper side of the plug-in portion.

2. The electric screwdriver bit according to claim 1, characterized in that: There are more than two movable spring blocks, elastic members and movable grooves, and the movable grooves are distributed at intervals along the central axis of the head body.

3. The electric screwdriver bit according to claim 2, characterized in that: There are eight movable grooves, which are evenly distributed on the side wall of the head body at circumferential intervals; there are also eight corresponding movable spring blocks and elastic members.

4. The electric screwdriver bit according to claim 1, characterized in that: The head body comprises an upper body and a lower body which are axially detachably locked; the top of the upper body is connected to the tail of the electric screwdriver head, and the bottom surface of the upper body is concavely provided with an installation cavity; the movable groove passes through the lower body and is connected to the installation cavity.

5. The electric screwdriver bit according to claim 4, characterized in that: The lower body includes a mounting portion, an inverted frustum portion and the plug-in portion which are sequentially arranged up and down; the diameter of the mounting portion is smaller than the diameter of the top of the inverted frustum portion, and the diameter of the plug-in portion is equal to the diameter of the bottom of the inverted frustum portion; the movable groove passes through the mounting portion, the inverted frustum portion and the plug-in portion up and down, and the movable groove radially connects the mounting portion and the outside of the plug-in portion, while the inverted frustum portion is located radially outside the movable groove to form a limiting portion; the movable spring block has a protruding portion protruding from the outside of the mounting portion and the plug-in portion.

6. The electric screwdriver bit according to claim 5, characterized in that: The protrusion is in the form of a rectangular body, adapted to fit the notch of the magnet seat; and the movable spring block is in the form of a cylinder on the radial inner side of the protrusion, and the cylinder is limited to the radial inner part of the movable groove.

7. The electric screwdriver bit according to claim 5, characterized in that: The side wall of the installation cavity is provided with a clearance hole corresponding to the movable groove; the upper end of the movable spring block is radially protruded outward with a limiting protrusion, and the limiting protrusion moves up and down in the clearance hole; the top surface of the inverted frustum forms a limiting plane of the limiting protrusion.

8. The electric screwdriver bit according to claim 5, characterized in that: The elastic member is a spring, which is installed in a movable groove on the mounting portion, with one end of the spring abutting against the bottom wall of the mounting cavity and the other end abutting against the upper end of the movable spring block.

9. The electric screwdriver bit according to claim 4, characterized in that: It also includes a mounting screw; a mounting hole that passes through the top of the lower body is provided at the center of the bottom of the lower body, and a locking hole with an internal thread is provided at the center of the bottom of the upper body mounting cavity; the mounting screw passes through the mounting hole and is locked in the locking hole, thereby coaxially locking and fixing the lower body and the upper body into one.

10. The electric screwdriver bit according to claim 1, characterized in that: A magnet is arranged in the middle of the plug-in part.

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