CN217728578U

CN217728578U - Electric screwdriver

Info

Publication number: CN217728578U
Application number: CN202220705820.0U
Authority: CN
Inventors: 叶志国; 邹福成; 黄鑫
Original assignee: Guangdong Jinlong Dongchuang Intelligent Equipment Co ltd
Current assignee: Guangdong Jinlong Dongchuang Intelligent Equipment Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-11-04
Anticipated expiration: 2032-03-29

Abstract

The utility model relates to the field of electric tools and discloses an electric screwdriver, which comprises a screwdriver head and a vacuumizing device; one end of the screwdriver head is provided with a first end face, a protruding part matched with the groove shape of the head of the screw is arranged on the first end face, and a plurality of adsorption holes used for adsorbing the head of the screw are formed in the first end face; an airflow channel is formed in the screwdriver head, one end of the airflow channel is communicated with the vacuumizing device, and the other end of the airflow channel is communicated with the adsorption hole. The bulge is inserted into the groove type of the screw head, and then the vacuumizing device vacuumizes the air flow channel, so that the screw head is fixed on the first end face with the adsorption hole in an adsorption mode, the screw is prevented from falling due to vibration or shaking in the moving process, and the dismounting efficiency is improved.

Description

Electric screwdriver

Technical Field

The utility model relates to an electric tool field especially relates to an electric screwdriver.

Background

The screwdriver is widely used for disassembling and assembling various workpieces, and the currently used screwdrivers generally comprise a manual screwdriver, an electric screwdriver, a pneumatic screwdriver and the like.

In the prior art, the electric screwdriver comprises a rod-shaped screwdriver head and an electric motor for driving the screwdriver head to rotate, wherein the electric motor drives the screwdriver head to rotate, and the screwdriver head drives the screw to rotate so as to complete the assembly and disassembly of the screw. Generally, the end of the bit near the bolt is treated to have a certain magnetism so that the bit can attract the bolt.

Because the magnetism of batch head one end is usually weaker, its ability of adsorbing the screw is weaker, and the screw drops easily in the removal process to cause the decline of dismouting efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic screwdriver promotes the adsorption efficiency to the screw, avoids the screw to drop because of vibration or shake at the removal in-process.

To achieve the purpose, the utility model adopts the following technical proposal:

an electric screwdriver comprises a screwdriver head and a vacuumizing device;

one end of the screwdriver head is provided with a first end face, a protruding part matched with the groove shape of the head of the screw is arranged on the first end face, and a plurality of adsorption holes used for adsorbing the head of the screw are formed in the first end face;

an airflow channel is formed in the screwdriver head, one end of the airflow channel is communicated with the vacuumizing device, and the other end of the airflow channel is communicated with the adsorption hole.

Optionally, the vacuum pumping device comprises a fixed sleeve sleeved on the batch head, and a sealing sleeve, a first sealing element and a second sealing element which are all installed in the fixed sleeve;

the first sealing element is arranged at the first end of the sealing sleeve in a sealing way, and the second sealing element is arranged at the second end of the sealing sleeve in a sealing way;

the first sealing element and the second sealing element are both provided with sealing through holes, and the batch head sequentially passes through the sealing through holes of the first sealing element and the sealing through holes of the second sealing element, so that the sealing sleeve, the first sealing element and the second sealing element form a suction cavity communicated with the airflow channel;

the fixed sleeve is also provided with a trachea interface communicated with the suction cavity.

Optionally, the electric screwdriver further comprises a driving device for driving the screwdriver head to rotate, the driving device is provided with an installation part, an installation slot is formed in the installation part, and one end, far away from the first end face, of the screwdriver head is detachably inserted into the installation slot;

still be provided with the chucking arch on the outer peripheral face of installation department, on the installation department the cover be equipped with the installation cover of the protruding joint of chucking, the installation cover with fixed cover fixed connection.

Optionally, the batch head comprises a first rod part and a second rod part fixedly connected with the first rod part;

the diameter of the second rod part is larger than that of the first rod part, and the end part, far away from the second rod part, of the first rod part is provided with the first end face.

Optionally, the bit is a tapered rod, and the end of the bit with the smallest diameter is provided with the first end face.

Optionally, the sealing through hole on the first sealing member and the sealing through hole on the second sealing member are both tapered holes matching the tapered rod.

Optionally, the protruding portion is Y-shaped, the number of the adsorption holes is three, and the three adsorption holes surround the protruding portion circumferential array.

Optionally, the first end surface is an arc-shaped surface fitted to the head of the screw.

Optionally, the air flow channel is a spiral channel, and the spiral channel is communicated with the suction cavity through a plurality of communication holes.

Optionally, a filter screen is arranged on the mouth of the air pipe connector.

Compared with the prior art, the utility model discloses following beneficial effect has:

in this embodiment, the protruding portion is inserted into the groove type of the screw head, and then the vacuum pumping device vacuumizes the airflow channel, so that the screw head is fixed on the first end surface of the adsorption hole, and the screw is prevented from dropping due to vibration or shaking in the moving process, thereby improving the dismounting efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

Fig. 1 is a schematic front view of an electric screwdriver according to an embodiment of the present invention;

fig. 2 is a schematic top view of an electric screwdriver according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A schematic sectional view taken along line A-A of the electric screwdriver of FIG. 2;

FIG. 4 is an enlarged schematic view of position A of FIG. 3;

fig. 5 is a schematic perspective view of an electric screwdriver according to an embodiment of the present invention;

fig. 6 is an enlarged schematic view of the position B in fig. 5.

Illustration of the drawings: 1. a batch head; 11. a first end face; 12. a projection; 13. an adsorption hole; 2. a vacuum pumping device; 101. an air flow channel; 21. fixing a sleeve; 22. sealing sleeves; 23. a first seal member; 24. a second seal member; 102. a suction lumen; 3. a tracheal tube interface; 4. a drive device; 41. installing a slot; 42. clamping the bulge; 5. and (7) installing a sleeve.

Detailed Description

To make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described in the embodiments of the present invention with reference to the drawings, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment of the utility model provides an electronic screwdriver through the gas in the evacuating device suction airflow channel 101 to make airflow channel 101 form the negative pressure, so that adsorb hole 13 on the first terminal surface 11 and can steadily adsorb the screw, avoid the screw to remove the in-process at electronic screwdriver and drop because of vibration or shake.

Referring to fig. 1 to 6, the electric screwdriver includes a screwdriver bit 1 and a vacuum extractor 2;

one end of the screwdriver bit 1 is provided with a first end surface 11, the first end surface 11 is provided with a convex part 12 matched with the groove shape of the screw head, and the first end surface 11 is provided with a plurality of adsorption holes 13 for adsorbing the screw head;

an airflow channel 101 is formed in the batch head 1, one end of the airflow channel 101 is communicated with the vacuumizing device 2, and the other end of the airflow channel 101 is communicated with the adsorption hole 13.

In this embodiment, the vacuum extractor 2 is used for vacuum extraction, at this time, the screw head at least partially covers the adsorption hole 13, the screw head is fixed on the first end surface 11 under the action of negative pressure, and then the screwdriver head 1 can drive the screw to rotate so as to complete the dismounting operation.

Optionally, the vacuum extractor 2 comprises a fixed sleeve 21 sleeved on the batch head 1, and a sealing sleeve 22, a first sealing member 23 and a second sealing member 24 which are all installed in the fixed sleeve 21;

a first seal 23 is sealingly arranged at a first end of the sealing sleeve 22, and a second seal 24 is sealingly arranged at a second end of the sealing sleeve 22;

the first sealing piece 23 and the second sealing piece 24 are provided with sealing through holes, and the batch head 1 sequentially passes through the sealing through holes of the first sealing piece 23 and the sealing through holes of the second sealing piece 24, so that the sealing sleeve 22, the first sealing piece 23 and the second sealing piece 24 form a suction cavity 102 communicated with the airflow channel 101;

the fixing sleeve 21 is also provided with a trachea interface 3 communicated with the suction cavity 102.

Specifically, since the batch head 1 is small in size and is not easy to install the air pipe interface 3, a sealing sleeve 22 is provided, and the sealing sleeve 22, the first seal 23 and the second seal 24 are installed in the sealing sleeve 22. In this embodiment, the size of the sealing sleeve 22 can be set appropriately according to the needs of the air tube connector 3, so that the air tube connector 3 is simpler.

Optionally, the electric screwdriver further comprises a driving device 4 for driving the screwdriver head 1 to rotate, the driving device 4 is provided with an installation part, an installation slot 41 is formed in the installation part, and one end, far away from the first end face 11, of the screwdriver head 1 is detachably inserted into the installation slot 41;

still be provided with chucking arch 42 on the outer peripheral face of installation department, the cover is equipped with the installation cover 5 with chucking arch 42 joint on the installation department, installation cover 5 and fixed cover 21 fixed connection.

Specifically, the driving device 4 drives the screwdriver bit 1 to rotate, and the screwdriver bit 1 drives the screw to rotate through the protrusion 12. In order to improve the stability, the mounting sleeve 5 is fixedly connected with the fixing sleeve 21 to support the fixing sleeve, so that the screwdriver bit 1 is prevented from bending due to overlarge stress, and the service life of the screwdriver bit 1 is prolonged.

Optionally, the batch head 1 comprises a first rod part and a second rod part fixedly connected with the first rod part;

the diameter of second pole portion is greater than the diameter of first pole portion, and the tip that the second pole portion was kept away from to first pole portion is provided with first terminal surface 11.

Specifically, the diameter of the first rod portion is smaller, so that the first rod portion can conveniently extend into the mounting hole to detach the bolt. The diameter of the second rod part is relatively large, so that the airflow channel 101 is convenient to open, and the bearing capacity is improved, so that the screwdriver bit 1 is not easy to bend in the using process.

Optionally, the batch head 1 is a tapered rod, and the end of the batch head 1 with the smallest diameter is provided with a first end face 11. The sealing through hole on the first sealing member 23 and the sealing through hole on the second sealing member 24 are both tapered holes that match the tapered rod.

It should be noted that, the bit 1 is a tapered rod, and the sealing through hole is a tapered hole, so that the tapered rod can pass through the tapered hole more conveniently, and the sealing is also facilitated to form the suction chamber 102, thereby improving the sealing performance of the suction chamber 102.

Alternatively, the projection 12 is Y-shaped, and three suction holes 13 are provided, the three suction holes 13 surrounding the circumferential array of the projection 12. It is noted that the projections 12 may also be arranged in a cross shape.

Optionally, the first end surface is an arc-shaped surface attached to the head of the screw, so that a gap between the head of the screw and the first end surface is smaller, and the head of the screw can be better fixed on the first end surface 11 by negative pressure.

Alternatively, the air flow channel 101 is a spiral channel, and the spiral channel communicates with the suction chamber 102 through several communication holes.

It should be noted that the air flow path 101 may be formed in any shape as long as one end thereof communicates with the vacuum extractor 2 and the other end thereof communicates with each other.

Optionally, a filter screen is arranged on the mouth of the air pipe connector 3. In particular, the suction chamber 102 is thus able to contain the impurities sucked in, avoiding them from entering the vacuum generating means of the vacuum device.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric screwdriver is characterized by comprising a screwdriver head (1) and a vacuumizing device (2);

one end of the screwdriver head (1) is provided with a first end face (11), the first end face (11) is provided with a protruding part (12) matched with the groove shape of the head of the screw, and the first end face (11) is provided with a plurality of adsorption holes (13) for adsorbing the head of the screw;

an air flow channel (101) is formed in the batch head (1), one end of the air flow channel (101) is communicated with the vacuumizing device (2), and the other end of the air flow channel is communicated with the adsorption hole (13).

2. The electric screwdriver according to claim 1, wherein said evacuation means (2) comprise a fixed sleeve (21) fitted on said screwdriver head (1), and a sealing sleeve (22), a first seal (23) and a second seal (24) all mounted in said fixed sleeve (21);

the first sealing element (23) is arranged at the first end of the sealing sleeve (22) in a sealing way, and the second sealing element (24) is arranged at the second end of the sealing sleeve (22) in a sealing way;

the first sealing element (23) and the second sealing element (24) are provided with sealing through holes, and the batch head (1) sequentially passes through the sealing through hole of the first sealing element (23) and the sealing through hole of the second sealing element (24) so that the sealing sleeve (22), the first sealing element (23) and the second sealing element (24) form a suction cavity (102) communicated with the airflow channel (101);

the fixed sleeve (21) is also provided with an air pipe interface (3) communicated with the suction cavity (102).

3. The electric screwdriver according to claim 2, further comprising a driving device (4) for driving the screwdriver head (1) to rotate, wherein the driving device (4) has a mounting portion, a mounting slot (41) is formed in the mounting portion, and one end of the screwdriver head (1) far away from the first end surface (11) is detachably inserted into the mounting slot (41);

still be provided with chucking arch (42) on the outer peripheral face of installation department, the cover be equipped with on the installation department with installation cover (5) of the protruding (42) joint of chucking, installation cover (5) with fixed cover (21) fixed connection.

4. The electric screwdriver according to claim 1, wherein the screwdriver head (1) comprises a first rod part and a second rod part fixedly connected with the first rod part;

the diameter of the second rod part is larger than that of the first rod part, and the end part, far away from the second rod part, of the first rod part is provided with the first end face (11).

5. The electrically powered screwdriver according to claim 2, wherein said screwdriver head (1) is a conical rod, the end of said screwdriver head (1) having the smallest diameter being provided with said first end face (11).

6. The motorized screwdriver according to claim 5, wherein the sealing through hole of said first sealing member (23) and the sealing through hole of said second sealing member (24) are tapered holes matching said tapered rod.

7. The motorized screwdriver according to claim 1, wherein said protrusion (12) is Y-shaped, said suction holes (13) being provided in three, three suction holes (13) circumferentially arrayed around said protrusion (12).

8. The powered screwdriver as defined in claim 1, wherein said first end surface is an arcuate surface conforming to a head of a screw.

9. The electric screwdriver according to claim 2, wherein said air flow channel (101) is a spiral channel and said spiral channel communicates with said suction chamber (102) through several communication holes.

10. The electric screwdriver according to claim 2, wherein a filter screen is arranged on the nozzle of the air pipe interface (3).