CN216608818U

CN216608818U - Novel electric screwdriver structure

Info

Publication number: CN216608818U
Application number: CN202122818576.7U
Authority: CN
Inventors: 张雷
Original assignee: Ningde Yuku Hardware Products Co ltd
Current assignee: Ningde Yuku Hardware Products Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-27
Anticipated expiration: 2031-11-17

Abstract

The utility model relates to a novel electric screwdriver structure which comprises an electric screwdriver body, wherein an output shaft of the electric screwdriver body is connected with an inner screwdriver head, an outer screwdriver head is coaxially sleeved on the outer periphery of the inner screwdriver head, an axial guide assembly is arranged between the outer screwdriver head and the inner screwdriver head, and a buffer spring is arranged between the end parts of the outer screwdriver head and the inner screwdriver head. Simple structure, convenient high efficiency.

Description

Novel electric screwdriver structure

Technical Field

The utility model relates to a novel electric screwdriver structure.

Background

Electric drivers, also called electric screwdrivers and electric screwdrivers (electric screwdrivers), are electric tools used for tightening and loosening screw caps.

The traditional electric screwdriver can only be rotated once. When meeting the spiro union nut on the screw rod, but need screw the screw rod earlier and then screw the operating mode of nut, traditional screwdriver can only divide two-step operation, and the first cover of screwdriver is revolved at the screw rod tip earlier, unloads the screwdriver again and changes the cover and revolve at the nut after the screwdriver head, and the step is loaded down with trivial details, and is inefficient.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide a novel electric screwdriver structure.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a novel structure is criticized to electricity, includes that the electricity criticizes the body, criticize the head in the output shaft of body is criticized to the electricity, the coaxial cover in peripheral portion of interior criticizing the head is equipped with outer criticizing the head, be provided with axial direction subassembly between the week portion of criticizing head and interior criticizing the head, be provided with buffer spring between the tip of criticizing head and interior criticizing the head outward.

Preferably, the execution ends of the internal screwdriver head and the external screwdriver head are coaxially provided with internal hexagonal screw openings.

Preferably, the inner hexagonal screw mouth of the inner screwdriver head is a small mouth, and the inner hexagonal screw mouth of the outer screwdriver head is a large mouth.

Preferably, the outer head is provided with a channel which is penetrated by the inner head in the coaxial communication way at the side of the inner hexagonal screw port, the channel consists of a cylindrical hole section and a polygonal hole section, the inner diameter of the cylindrical hole section is larger than that of the polygonal hole section, the cylindrical hole section is close to the inner hexagonal screw port, and the polygonal hole section is far away from the inner hexagonal screw port.

Preferably, the outer peripheral part of the inner screwdriver head at the inner hexagonal screw opening is a cylindrical shaft section which is coaxially matched with the cylindrical hole section, and a polygonal shaft section which is coaxially and fixedly matched with the polygonal hole section is arranged on the cylindrical shaft section in a direction far away from the inner hexagonal screw opening; the polygonal hole section and the polygonal shaft section are matched to form an axial guide assembly.

Preferably, the spring installation cavity is coaxially arranged inside the screwdriver head, the spring connection cavity is arranged on the periphery of the screwdriver head close to the screwdriver body output shaft, one end of the buffer spring is located in the spring installation cavity, and the other end of the buffer spring is located in the spring connection cavity.

Preferably, the outer screwdriver head is provided with a cylindrical guide section close to the outer peripheral part of the screwdriver body output shaft, and the outer diameter of the cylindrical guide section is equal to the inner diameter of the spring connecting cavity.

Preferably, the electric screwdriver body is arranged on an electric screwdriver frame, and the electric screwdriver frame is driven by a driving mechanism to axially reciprocate and translate.

Preferably, the driving mechanism comprises an air cylinder installed on a movable seat body, a piston rod of the air cylinder is fixedly connected with the electric screwdriver frame, and the bottom of the electric screwdriver frame is in sliding fit with a sliding rail axially extending on the movable seat body through a sliding block.

Preferably, the bottom of the movable seat body is in sliding fit with a slide rail axially extending on the rack through a slide block, and is driven to axially reciprocate and translate through an air cylinder or an oil cylinder or an electric push rod arranged on the rack; the end face of the movable seat body, which is at the same side with the inner hexagonal screw ports of the inner screwdriver head and the outer screwdriver head, is fixedly connected with a plurality of axially extending ejector rods for jacking and pressing a pressing plate of the clamp, and the end face is provided with a yielding through hole for the screwdriver head of the screwdriver body to pass through.

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

1. the novel electric screwdriver has a simple structure. The use of single spiral operating mode is not influenced, and the internal screw head or the external screw head is selected to align the hexagonal screw head to be screwed or unscrewed when in use.

2. When the screw rod needs to be screwed first and then the nut needs to be screwed, the nut is sleeved by the outer screwdriver head, the end part of the screw rod is sleeved by the inner screwdriver head, the buffer spring is compressed at the moment, the inner screwdriver head and the outer screwdriver head synchronously rotate, namely the nut screwed on the screw rod synchronously rotates when the screw rod rotates, and the relative position between the nut and the screw rod is unchanged. After the screw is screwed, the inner screwdriver head can be separated from the end part of the screw independently, the buffer spring is slightly reset, the outer screwdriver head still sleeves the nut, the inner screwdriver head and the outer screwdriver head synchronously rotate at the moment, the inner screwdriver head idles, and the outer screwdriver head starts to screw the nut. When the nut needs to be unscrewed, the nut is firstly rotated by the screwdriver head, the screwdriver head does not contact with the screw rod (the screwdriver head idles), the nut is still sleeved by the screwdriver head after the nut is unscrewed, the end part of the screw rod is sleeved by the screwdriver head, the buffer spring is compressed at the moment, the screwdriver head and the screwdriver head synchronously rotate, namely the nut which is screwed on the screw rod synchronously rotates when the screw rod rotates, the relative position between the nut and the screw rod is not changed, and the screw rod is also unscrewed.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a first cross-sectional view of an embodiment of the present invention.

FIG. 2 is a second cross-sectional view of the embodiment of the present invention.

Fig. 3 is a first schematic view of the installation of the electric screwdriver body.

Fig. 4 is a second schematic view of the installation of the electric screwdriver body.

Fig. 5 is a first schematic view of the batch head working state of the electric batch body.

Fig. 6 is a schematic view of a second operation state of the batch head of the electric batch body.

Fig. 7 is a third schematic view of the batch head working state of the electric batch body.

Fig. 8 is a fourth schematic view of the batch head working state of the electric batch body.

Fig. 9 is a fifth schematic view of the batch head working state of the electric batch body.

Fig. 10 is a first schematic view of the construction of the pressure clamp.

Fig. 11 is a second schematic view of the construction of the pressure jig.

Fig. 12 is an exploded view of several platens.

Detailed Description

The utility model is further explained below with reference to the drawings and the embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1-12, the present embodiment provides a novel electric screwdriver structure, including electric screwdriver body 1B, output shaft 2B of electric screwdriver body is connected with interior screwdriver head 3B, the coaxial cover in peripheral part of interior screwdriver head is equipped with outer screwdriver head 4B, be provided with axial direction subassembly between the week portion of outer screwdriver head and interior screwdriver head, be provided with buffer spring 5B between the tip of outer screwdriver head and interior screwdriver head.

In the embodiment of the utility model, the execution ends of the internal batch head and the external batch head are coaxially provided with internal hexagonal screw ports 6B.

In the embodiment of the utility model, the inner hexagonal screw port of the inner screwdriver head is a small port, and the inner hexagonal screw port of the outer screwdriver head is a large port.

In the embodiment of the utility model, the outer screwdriver head is coaxially communicated with a channel penetrated by the inner screwdriver head at the side of the inner hexagonal screw port, the channel consists of a cylindrical hole section 7B and a polygonal hole section 8B, the inner diameter of the cylindrical hole section is larger than that of the polygonal hole section, the cylindrical hole section is close to the inner hexagonal screw port, and the polygonal hole section is far away from the inner hexagonal screw port.

In the embodiment of the utility model, the outer peripheral part of the inner screwdriver head at the position of the inner hexagonal screw opening is a cylindrical shaft section 9B which is used for coaxially matching with the cylindrical hole section, and a polygonal shaft section 10B which is used for matching with the polygonal hole section is coaxially and fixedly arranged on the cylindrical shaft section in the direction far away from the inner hexagonal screw opening; the polygonal hole section and the polygonal shaft section are matched to form an axial guide assembly.

In the embodiment of the utility model, a spring mounting cavity 11B is coaxially arranged inside the outer screwdriver head, a spring connecting cavity 12B is arranged on the periphery of the inner screwdriver head, which is close to the output shaft of the screwdriver body, one end of a buffer spring is positioned in the spring mounting cavity, and the other end of the buffer spring is positioned in the spring connecting cavity.

In the embodiment of the utility model, the outer screwdriver head is provided with a cylindrical guide section 13B close to the outer peripheral part of the output shaft of the screwdriver body, and the outer diameter of the cylindrical guide section is equal to the inner diameter of the spring connecting cavity.

In the embodiment of the utility model, the electric screwdriver body is arranged on an electric screwdriver frame 14B, and the electric screwdriver frame is driven by a driving mechanism to perform reciprocating translation along the axial direction.

In the embodiment of the utility model, the driving mechanism comprises an air cylinder 16B arranged on a movable seat body 15B, an air cylinder piston rod is fixedly connected with an electric screwdriver frame, and the bottom of the electric screwdriver frame is in sliding fit with a sliding rail 18B which axially extends on the movable seat body through a sliding block 17B.

In the embodiment of the utility model, the bottom of the movable seat body is in sliding fit with a slide rail which axially extends on the rack through a slide block, and is driven to axially reciprocate and translate through an air cylinder or an oil cylinder or an electric push rod 19B which is arranged on the rack 23B; the end face of the movable seat body, which is at the same side with the inner hexagonal screw ports of the inner screwdriver head and the outer screwdriver head, is fixedly connected with a plurality of axially extending ejector rods 20B for jacking and pressing a pressing plate of the clamp, and the end face is provided with a abdicating through hole 22B for the screwdriver head of the screwdriver body to pass through.

The working principle of the novel electric screwdriver structure is as follows:

1. the use of single spiral operating mode is not influenced, and the internal screw head or the external screw head is selected to align the hexagonal screw head to be screwed or unscrewed when in use.

The specific implementation process comprises the following steps: taking a pressure clamp as an example, the pressure clamp and the novel electric screwdriver are both positioned on the working platform 21B, the frame of the novel electric screwdriver is fixed on the working platform, and the pressure clamp is positioned on the working platform.

Pressure fixture includes support body 1A, install a plurality of clamp plate 2A on the support body, be provided with the direction subassembly between a plurality of clamp plate and the support body, for the clamp of battery establishes the space between two adjacent clamp plates, be provided with pressure sensor 3A between one of them extreme side's clamp plate and the support body, another extreme side's clamp plate is for exerting pressure the end. The lateral parts of the press plates in the translation direction are provided with the same linkage belt 4A, and the corresponding sections of the linkage belt are fixedly connected on the corresponding press plates. When the pressing plate at the pressing end leaves/releases the corresponding battery, the other pressing plates are pulled and linked together to leave/release the corresponding battery through the linkage belt. The end part of the linkage belt positioned at the side of the pressure sensor is fixedly connected on the frame body. The clamp is provided with a buffer sheet 5A in the clamping space, and the buffer sheets are located on the end faces of the pressing plates forming the clamping space and are used for being in contact with the end faces of the batteries. The area of the buffer sheet is almost equal to the areas of the pressed surface of the battery and the pressed surface of the pressing plate, so that the surface of the battery is protected, and the surface of the battery is uniformly pressed. The buffer sheet is a silica gel sheet. Press from both sides and establish all to be provided with the battery that is used for holding the battery on the space and place half groove 6A, the battery is placed half groove and is all linked firmly and establish the clamp plate terminal surface in space in the constitution. The batteries are placed between the two adjacent battery placing half grooves from top to bottom, and the two battery placing half grooves of the batteries are not butted in the pressing direction. The guide assembly comprises at least two guide rods 7A fixedly connected to the frame body, and the guide rods penetrate through the guide holes 8A in the plurality of press plates. Be provided with pressurize mechanism between the clamp plate of the end of exerting pressure and the support body, pressurize mechanism includes that the direction along direction subassembly is worn to establish the screw rod 9A of through-hole on the support body, screw rod inner warp bearing frame 10A, the bearing rotates with the clamp plate of the end of exerting pressure to be connected, the screw rod outer end is unsettled, spiro union has pressurize nut 15A on the screw rod between the clamp plate of the end of exerting pressure and the support body, link firmly the pressurize guide arm 16A parallel with the screw rod on the clamp plate of the end of exerting pressure, the other end of pressurize guide arm is worn to establish on the pressurize guide hole of support body, be equipped with the through-hole that passes for the pressurize guide arm on the pressurize nut, the terminal surface of support body in the pressurize nut side is equipped with inlays the pressurize circular slot 17A who establishes for circular shape pressurize nut. The support body includes bottom plate 11A, the double-phase opposite end of bottom plate has linked firmly end plate 12A, the direction subassembly links firmly between two end plates, the pressurize mechanism is installed between the clamp plate of one of them end plate and the end of exerting pressure. The pressure sensor is located between the outermost end side pressing plate except the pressing end and the other end plate. The pressure sensor is electrically connected with the controller, and the controller is further electrically connected with a display screen. The outer end faces of the end plates are fixedly connected with traction handles 13A. And an ejector rod through hole 19A for the ejector rod to pass through is formed in the end plate of the pressing end of the frame body.

When the pressure clamp is used, the batteries 14A are all located on the corresponding clamping space, and the movable seat body drives the ejector rod and the electric screwdriver to move horizontally towards the pressure application end of the pressure clamp. The ejector rod penetrates through the ejector rod through hole to perform ejection translation on the pressing plate at the pressing end, all the batteries are pre-pressed one by the pressing plates, the batteries are pre-pressed in the clamping space, a preset initial pressure value is fed back from the pressure sensor, and at the moment, the electric screwdriver controls the pressure maintaining mechanism to maintain pressure. And then, starting to charge the battery, wherein in the charging process, because the battery is pressed by the pressing plate, the expansion caused by the internal pressure of the battery is directly transmitted to the pressure sensor for feedback, so that the change value of the internal pressure of the battery is obtained for comparison with the normal range value to obtain a monitoring conclusion.

The specific working principle of the electric batch control pressure maintaining mechanism for pressure maintaining is as follows: the screw rod and the pressure maintaining guide rod can move synchronously along with the pressure plate at the pressure applying end on the frame body, and the pressure maintaining guide rod does not depart from the pressure maintaining guide hole as long as the screw rod does not depart from the through hole in which the screw rod is installed. When the ejector rod pushes the pressing end pressing plate to be in place, the air cylinder drives the electric screwdriver to be close to the pressure maintaining mechanism, the outer screwdriver sleeves the nut, the inner screwdriver sleeves the end part of the screw rod, the buffer spring is compressed at the moment, the inner screwdriver and the outer screwdriver synchronously rotate, namely the nut screwed on the screw rod synchronously rotates when the screw rod rotates, and the relative position between the nut and the screw rod is unchanged. And the rotation of the screw rod enables the pressure maintaining nut to move towards the pressure maintaining circular groove on the screw rod until the pressure maintaining nut is embedded into the pressure maintaining circular groove and is tightly held.

After the screw rod is screwed completely, the internal screw head can be separated from the end part of the screw rod independently, the buffer spring is reset slightly, the external screw head still sleeves the nut 18A, the internal screw head and the external screw head rotate synchronously at the moment, the internal screw head idles, the external screw head starts to screw the nut, so that the external screw head and the pressure maintaining nut lock the screw rod together, the screw rod is prevented from rotating randomly, and pressure maintaining is realized. The ejector pin can withdraw from the pressure clamp after pressure maintaining.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a novel electricity is criticized structure, includes the electricity and criticizes the body, its characterized in that: the electric screwdriver is characterized in that an output shaft of the electric screwdriver body is connected with an inner screwdriver head, an outer screwdriver head is coaxially sleeved on the outer peripheral portion of the inner screwdriver head, an axial guide assembly is arranged between the outer screwdriver head and the inner screwdriver head, and a buffer spring is arranged between the outer screwdriver head and the end portion of the inner screwdriver head.

2. The novel electric batch structure according to claim 1, characterized in that: and the execution ends of the internal screwdriver head and the external screwdriver head are coaxially provided with internal hexagonal screw openings.

3. The novel electric batch structure according to claim 2, characterized in that: the inner hexagonal screw mouth of the inner screwdriver head is a small mouth, and the inner hexagonal screw mouth of the outer screwdriver head is a large mouth.

4. The new electric batch structure according to claim 1, characterized in that: the coaxial intercommunication of outer batch head in its interior hexagonal screw mouth's side is provided with the passageway that wears to establish with the batch head, and this passageway comprises cylinder hole section and polygon hole section, and cylinder hole section internal diameter is greater than polygon hole section internal diameter, and the cylinder hole section is close to interior hexagonal screw mouth, and interior hexagonal screw mouth is kept away from to polygon hole section.

5. The novel electric batch structure according to claim 4, characterized in that: the outer periphery of the inner screwdriver head at the position of the inner hexagonal screw opening is a cylindrical shaft section which is coaxially matched with the cylindrical hole section, and a polygonal shaft section which is coaxially and fixedly matched with the polygonal hole section is arranged on the cylindrical shaft section in the direction far away from the inner hexagonal screw opening; the polygonal hole section and the polygonal shaft section are matched to form an axial guide assembly.

6. The novel electric batch structure according to claim 1, characterized in that: the inside coaxial spring mount chamber that is equipped with of outer batch head, the periphery that interior batch head is close to the electricity and criticizes body output shaft is equipped with the spring coupling chamber, and buffer spring one end is arranged in the spring mount chamber, and the other end is arranged in the spring coupling chamber.

7. The novel electric batch structure according to claim 6, characterized in that: the outer periphery of the screwdriver body output shaft close to the screwdriver head is provided with a cylindrical guide section, and the outer diameter of the cylindrical guide section is equal to the inner diameter of the spring connecting cavity.

8. The novel electric batch structure according to claim 1, characterized in that: the electric screwdriver body is arranged on an electric screwdriver frame, and the electric screwdriver frame is driven by a driving mechanism to move in a reciprocating mode along the axial direction.

9. The novel electric batch structure according to claim 8, characterized in that: the driving mechanism comprises an air cylinder installed on a movable seat body, a piston rod of the air cylinder is fixedly connected with an electric screwdriver frame, and the bottom of the electric screwdriver frame is in sliding fit with a sliding rail axially extending on the movable seat body through a sliding block.

10. The novel electric batch structure according to claim 9, characterized in that: the bottom of the movable seat body is in sliding fit with a slide rail which axially extends on the rack through a slide block, and is driven to axially reciprocate and translate through an air cylinder or an oil cylinder or an electric push rod which is arranged on the rack; the end face of the movable seat body, which is at the same side with the inner hexagonal screw ports of the inner screwdriver head and the outer screwdriver head, is fixedly connected with a plurality of axially extending ejector rods for jacking and pressing a pressing plate of the clamp, and the end face is provided with a yielding through hole for the screwdriver head of the screwdriver body to pass through.