CN219726027U

CN219726027U - Screwdriver with concealed cutter head

Info

Publication number: CN219726027U
Application number: CN202320907545.5U
Authority: CN
Inventors: 钱贤平
Original assignee: Ningbo Decheng Tools Co ltd
Current assignee: Ningbo Decheng Tools Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-09-22
Anticipated expiration: 2033-04-19

Abstract

The utility model relates to the technical field of hardware tools, in particular to a screwdriver with a concealed tool bit, which comprises: the screwdriver comprises a grab handle, a plurality of tool bits and a triggering component, wherein a first accommodating cavity and a plurality of second accommodating cavities for accommodating the tool bits are respectively arranged at two ends of the grab handle, the handle is slidably arranged in the first accommodating cavity, and when the triggering component acts, the handle is arranged in the first accommodating cavity or extends out of an cavity opening of the first accommodating cavity by a preset distance.

Description

Screwdriver with concealed cutter head

Technical Field

The utility model relates to the technical field of hardware tools, in particular to a screwdriver with a concealed tool bit.

Background

The screwdriver is a common tool for turning screws, and comprises a straight screwdriver, a cross screwdriver and a hexagonal screwdriver according to the tool bit classification.

The existing screwdriver, as shown in fig. 1, comprises a handle 90, a handle 91, a plurality of tool bits 92, a sealing cover 93, one end of the handle 90 is fixedly connected with the handle 91, the other end of the handle 90 is provided with a containing cavity 94 with an opening, each tool bit 92 is arranged in the containing cavity 94, the sealing cover 93 is in threaded connection with the handle 90 and seals the opening of the containing cavity 94, when in use, an operator unscrews and removes the sealing cover 93, selects the required tool bit 92, and installs the tool bit 92 on the handle 91, the whole length of the screwdriver is reduced by hiding the tool bit 92 on the handle 90, so that the screwdriver is convenient to carry, the tool bit 92 placed in the containing cavity 94 is relatively strong in practicability, relatively convenient to carry and use, but relatively convenient to use through the sealing cover 93 and the handle 90 in threaded connection. The whole length of the screwdriver comprises the length of the grab handle 90 and the length of the handle 91, and the whole occupied space is further optimized; in addition, when carrying the screwdriver, although the handle 90 is wrapped with rubber, the handle 91 is made of metal, and the exposed handle 91 is easy to collide with other articles or hurt articles in the tool bag when being placed in the tool bag; in addition, since the sealing cover 93 is in threaded connection with the handle 90, when the cutter head 92 is taken and placed, the sealing cover 93 needs to be unscrewed or screwed, so that the sealing cover 93 needs to be separated from the handle 90 and the separated sealing cover 93 needs to be placed in one place, and a space for further optimization exists in convenience when the cutter head 92 is taken and placed.

Therefore, the requirement of the screwdriver which is smaller in whole occupied space, more convenient to carry, free of exposure of the handle and more convenient to take and place the tool bit exists.

Disclosure of Invention

The utility model mainly aims to provide a screwdriver with a built-in tool bit, wherein the screwdriver with the built-in tool bit comprises a grab handle, a tool handle, a plurality of tool bits and a trigger component, two ends of the grab handle are respectively provided with a first accommodating cavity and a plurality of second accommodating cavities, the side face of the grab handle is provided with a first sliding groove, the first sliding groove is communicated with the first accommodating cavity, the tool handle is slidably arranged in the first accommodating cavity, one end, close to the bottom wall of the first accommodating cavity, of the tool handle is provided with a limiting part, each second accommodating cavity is internally provided with the tool bit, the trigger component is slidably arranged in the first sliding groove, and the trigger component is clamped or separated from the limiting part.

Another object of the present utility model is to provide a screwdriver with a built-in tool bit, wherein the trigger assembly includes a pressing member, a contact member, a first elastic member and a plurality of second elastic members, the contact member is located between the pressing member and the first elastic member, two ends of the contact member are respectively connected with the pressing member and the first elastic member, the pressing member is slidably disposed in the first chute, one end of the first elastic member, which is away from the contact member, is connected with a side wall of the first accommodating cavity, the contact member is clamped or separated from the limiting portion, each of the second elastic members is located between the tool shank and a bottom wall of the first accommodating cavity, two ends of the second elastic member are respectively abutted against the tool shank and the bottom wall of the first accommodating cavity, and the tool shank is selectively placed in the first accommodating cavity or protrudes from the cavity by a predetermined distance through the trigger assembly.

Another object of the present utility model is to provide a screwdriver with a built-in tool bit, wherein the screwdriver with a built-in tool bit further includes a screening disc, the screening disc is rotatably mounted at one end of the grab handle having the second accommodating cavity, the screening disc is provided with a through hole, when the screening disc rotates by a predetermined angle, the through hole is right opposite to the second accommodating cavity, and the tool bit is taken and placed by rotating the screening disc, which has the advantage of being more convenient than the prior art.

In order to achieve at least one of the above objects, the present utility model provides a screwdriver with a built-in bit, wherein the screwdriver with a built-in bit comprises:

the two ends of the grab handle are respectively provided with a first accommodating cavity and a plurality of second accommodating cavities, the side surface of the grab handle is provided with a first chute, and the first chute is communicated with the first accommodating cavities; and

the knife handle is arranged in the first accommodating cavity in a sliding manner, and one end, close to the bottom wall of the first accommodating cavity, of the knife handle is provided with a limiting part; and

the cutter heads are arranged in each second accommodating cavity; and

the trigger assembly is arranged in the first chute in a sliding manner, and is clamped with or separated from the limiting part.

In one or more embodiments of the present utility model, the trigger assembly includes a pressing member, a contact member and a first elastic member, where the contact member is located between the pressing member and the first elastic member, two ends of the contact member are respectively connected to the pressing member and the first elastic member, the pressing member is slidably disposed in the first chute, one end of the first elastic member, which is away from the contact member, is connected to a side wall of the first accommodating cavity, and the contact member is clamped to or separated from the limiting portion.

In one or more embodiments of the present utility model, an end of the contact facing away from the pressing member has an abutment portion and a component portion, the component portion is located at an end of the abutment portion facing away from the pressing member, an end of the component portion near the handle has an arc surface, and the abutment portion and the limiting portion abut against or are separated from each other.

In one or more embodiments of the present utility model, the trigger assembly further includes a plurality of second elastic members, each of the second elastic members is located between the handle and the bottom wall of the first accommodating cavity, and two ends of the second elastic member respectively abut against the handle and the bottom wall of the first accommodating cavity.

In one or more embodiments of the present utility model, the side surface of the handle has a plurality of guiding protrusions, the side wall of the first accommodating cavity has a plurality of second sliding grooves, each of the second sliding grooves is communicated with the first accommodating cavity, the guiding protrusions are in one-to-one correspondence with the second sliding grooves, and each guiding protrusion extends into the corresponding second sliding groove.

In one or more embodiments of the present utility model, the side wall of the first accommodating cavity further has an annular cavity, the annular cavity is located at one end of the second sliding groove away from the cutter head, each of the second sliding grooves is communicated with the annular cavity, and the cavity height of the annular cavity is equal to or greater than the thickness of the guiding protrusion.

In one or more embodiments of the present utility model, the wall of the annular cavity has a plurality of grooves, and a first magnet is disposed in each groove.

In one or more embodiments of the present utility model, the screwdriver with the built-in bit further includes a screening disc rotatably mounted at one end of the handle having the second accommodating cavity, and the screening disc has a through hole thereon, and the through hole is opposite to the second accommodating cavity when the screening disc rotates by a predetermined angle.

In one or more embodiments of the present utility model, a second magnet is disposed on the screening disc, a third magnet is disposed at an end of the handle having the second accommodating cavity, the second magnet is attracted to the third magnet when the screening disc rotates by a predetermined angle, and the screening disc seals each of the second accommodating cavities when the second magnet is attracted to the third magnet.

In one or more embodiments of the present utility model, one end of the tool shank, which is close to the cavity opening of the first accommodating cavity, is provided with a matching groove, a fourth magnet is arranged at the bottom of the matching groove, and each tool bit is made of magnetic metal.

In the embodiment of the utility model, the screwdriver with the built-in tool bit comprises a grab handle, a tool shank, a plurality of tool bits and a triggering component, wherein a first accommodating cavity and a plurality of second accommodating cavities for accommodating the tool bits are respectively arranged at two ends of the grab handle, the tool shank is arranged in the first accommodating cavity in a sliding manner, and when the triggering component acts, the tool shank is arranged in the first accommodating cavity or extends out of a cavity opening of the first accommodating cavity by a preset distance, so that the tool shank extends out of the first accommodating cavity when in use and is arranged in the first accommodating cavity when in carrying, and the advantages of smaller occupied space, convenience in carrying and no exposure of the tool shank when in carrying are realized.

Drawings

These and/or other aspects and advantages of the present utility model will become more apparent and more readily appreciated from the following detailed description of the embodiments of the utility model, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 illustrates a schematic structural view of a prior art screwdriver;

FIG. 2 illustrates a cross-sectional view of a screwdriver with a bit built in accordance with an embodiment of the present utility model;

FIG. 3 illustrates a view of one end of a screwdriver with a tool bit embedded near the first housing cavity;

FIG. 4 illustrates a cross-sectional view of a second pocket of the screwdriver bit with a built-in screwdriver bit;

FIG. 5 illustrates a cross-sectional view at a trigger assembly;

fig. 6 illustrates a cross-sectional view of the grip.

Description of the embodiments

The terms and words used in the following description and claims are not limited to literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the utility model. It will be apparent to those skilled in the art, therefore, that the following description of the various embodiments of the utility model is provided for illustration only and not for the purpose of limiting the utility model as defined by the appended claims and their equivalents.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Although ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used merely to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, or groups thereof.

Summary of the application

The whole length of the existing screwdriver comprises the length of a grab handle and the length of a hilt, and the whole occupied space of the existing screwdriver has a further optimized space; in addition, when the screwdriver is carried, although the grab handle is wrapped with rubber, the grab handle is made of metal, and when the exposed grab handle is placed in a tool bag, the exposed grab handle is easy to collide with other articles or damage articles in the tool bag; in addition, because the sealing cover is in threaded connection with the grab handle, when the cutter head is taken and placed, the sealing cover needs to be unscrewed or screwed, so that the sealing cover is separated from the grab handle and the separated sealing cover is placed at one place, and a space for further optimization exists in convenience when the cutter head is taken and placed.

Based on the technical problems, the utility model provides the screwdriver with the built-in tool bit, wherein the screwdriver with the built-in tool bit has a simple structure, does not relate to complex manufacturing process and expensive materials, has higher economical efficiency, and is easy to produce for manufacturers, low in cost, beneficial to control of production cost and further beneficial to product popularization and use.

A screwdriver with a built-in schematic tool bit,

referring to fig. 2 to 6, a screwdriver with a built-in bit according to a preferred embodiment of the present utility model, as shown in fig. 2, includes a handle 10, a shank 20, and a plurality of bits (not shown).

Specifically, as shown in fig. 2, two ends of the handle 10 are respectively provided with a first accommodating cavity 101 and a plurality of second accommodating cavities 102, the handle 20 is slidably disposed in the first accommodating cavity 101 and disposed in the first accommodating cavity 101 or extends out of the cavity opening of the first accommodating cavity 101, and each of the second accommodating cavities 102 is provided with a cutter head.

It should be noted that, in this embodiment, as shown in fig. 3, the first accommodating cavity 101 is a square cavity, as shown in fig. 4, each second accommodating cavity 102 is a hexagonal cavity, the second accommodating cavities 102 are annularly arranged, and midpoints of each second accommodating cavity 102 are all distributed on the same circumference, and by setting a plurality of second accommodating cavities 102, the screwdriver with the built-in tool bit can simultaneously carry tool bits with various specifications or types, so that the application range of the screwdriver with the built-in tool bit is increased.

In addition, in order to facilitate the user to selectively place the tool shank 20 in the first accommodating cavity 101 or extend out of the cavity opening of the first accommodating cavity 101, as shown in fig. 5, the screwdriver with the built-in tool bit further includes a trigger assembly 30, specifically, as shown in fig. 6, a first chute 103 is provided on the side surface of the grip 10, the shape of the first chute 103 is preferably a dovetail groove, and the first chute 103 is communicated with the first accommodating cavity 101; in addition, a limiting portion 201 is disposed at one end of the handle 20 near the bottom wall of the first accommodating cavity 101; in addition, the trigger assembly 30 is slidably disposed in the first chute 103, and after the trigger assembly 30 moves a predetermined distance in the first chute 103, the trigger assembly 30 is engaged with or separated from the limiting portion 201.

It should be noted that, when the trigger assembly 30 is clamped with the limiting portion 201, the tool shank 20 is limited by the trigger assembly 30, the tool shank 20 is disposed in the first accommodating cavity 101, and when the trigger assembly 30 is separated from the limiting portion 201, the tool shank 20 extends out of the cavity opening of the first accommodating cavity 101 by a predetermined distance, so that a user can install the tool bit on the tool shank 20. It should be noted that, the predetermined distance that the tool shank 20 extends out of the cavity opening of the first accommodating cavity 101 is to enable the tool bit to screw or unscrew a screw disposed in a narrow gap having a certain depth.

It should be noted that, in the screwdriver in the prior art, the handle 20 is fixedly connected with the grab handle 10, because the handle 20 occupies a certain length, the whole occupied space of the screwdriver is larger, and the screwdriver is unfavorable for carrying, and because the handle 20 is made of metal, when the screwdriver is placed in the tool bag, other objects in the tool bag are easy to be knocked, in the embodiment of the utility model, the handle 20 is slidably arranged in the first accommodating cavity 101 of the grab handle 10, and when the screwdriver is carried, the handle 20 can be placed in the first accommodating cavity 101, so that the whole length of the screwdriver with the built-in screwdriver head is shortened, and the advantages of smaller whole occupied space and convenience in carrying are realized; in addition, when in carrying, because the cutter handle 20 is arranged in the first accommodating cavity 101, the risk of collision between the cutter handle 20 and other objects in the tool bag is avoided, and the advantage that the cutter handle 20 is not exposed when in carrying is realized.

Further, as shown in fig. 5, the triggering assembly 30 includes a pressing member 301, a contact member 302, and a first elastic member 303, where the contact member 302 is located between the pressing member 301 and the first elastic member 303, and two ends of the contact member 302 are respectively connected with the pressing member 301 and the first elastic member 303, where the connection manner includes, but is not limited to, welding, the pressing member 301 is slidably disposed in the first chute 103, one end of the first elastic member 303 facing away from the contact member 302 is connected with a side wall of the first accommodating cavity 101 by welding, and the contact member 302 is clamped or separated from the limiting portion 201; in addition, one end of the pressing member 301 facing away from the contact member 302 protrudes out of the sliding slot by a predetermined distance, so that the user can press the pressing member 301.

Specifically, as shown in fig. 5, the handle 20 is in a cylindrical shape as a whole, one end of the handle 20 near the bottom wall of the first accommodating cavity 101 has an annular groove 202, the maximum radial dimension of the end of the handle 20 near the bottom wall of the first accommodating cavity 101 is smaller than the dimension of the other end of the handle 20, the side surface forming the annular groove 202 forms the limit part 201, and the end of the handle 20 near the bottom wall of the first accommodating cavity 101 has a rounded corner; in addition, an end of the contact member 302 facing away from the pressing member 301 has an abutting portion 3021 and a force component portion 3022, the force component portion 3022 is located at an end of the abutting portion 3021 facing away from the pressing member 301, an end of the force component portion 3022 near the shank 20 has an arc surface, and the abutting portion 3021 and the limiting portion 201 abut against or are separated from each other.

Note that, since the pressing member 301 is slidably disposed in the first chute 103, and the first chute 103 is a dovetail groove, the pressing member 301 and the contact member 302 connected to the pressing member 301 do not move along the moving direction of the tool shank 20, and when the abutting portion 3021 abuts against the limiting portion 201, the limiting portion 201 is limited by the abutting portion 3021, so that the tool shank 20 is placed in the first accommodating chamber 101; when the user presses the pressing member 301, the pressing member 301 drives the abutting portion 3021 to separate from the limiting portion 201, so as to provide a condition for the tool shank 20 to extend out of the first accommodating cavity 101.

Further, in order to separate the abutting portion 3021 from the limiting portion 201, the tool shank 20 may automatically extend out of the cavity opening of the first accommodating cavity 101 by a predetermined distance, as shown in fig. 2, the trigger assembly 30 further includes a plurality of second elastic members 304, each of the second elastic members 304 is located between the tool shank 20 and the bottom wall of the first accommodating cavity 101, and two ends of the second elastic member 304 respectively abut against the tool shank 20 and the bottom wall of the first accommodating cavity 101. In this embodiment, the number of the second elastic members 304 is two, the pressing member 301 is located between the two second elastic members 304, one end of each second elastic member 304 is welded to the bottom wall of the first accommodating cavity 101, when the abutting portion 3021 on the contact member 302 is clamped with the limiting portion 201, the tool shank 20 is placed in the first accommodating cavity 101, each second elastic member 304 is in a compressed state, and one end of each second elastic member 304, which is away from the bottom wall of the first accommodating cavity 101, abuts against the end of the tool shank 20, and when the abutting portion 3021 on the contact member 302 is separated from the limiting portion 201, the two second elastic members 304 restore the state before deformation and push the tool shank 20 to extend out of the cavity opening of the first accommodating cavity 101 by a predetermined distance; in addition, the first elastic member 303 and the second elastic member 304 are each further implemented as a spring.

Since the screwdriver with the built-in tool bit is stressed by the handle 20 when in use, the position of the handle 20 extending out of the first accommodating cavity 101 in the length direction of the grip 10 must not be moved towards the second accommodating cavity 102 after being stressed, but the requirement cannot be met by only two second elastic members 304.

In view of this, as shown in fig. 2 and 6, the side surface of the handle 20 has a plurality of guide protrusions 203, the side wall of the first accommodation chamber 101 has a plurality of second sliding grooves 1011, each of the second sliding grooves 1011 communicates with the first accommodation chamber 101, the guide protrusions 203 are in one-to-one correspondence with the second sliding grooves 1011, each of the guide protrusions 203 extends into the corresponding second sliding groove 1011, in this embodiment, the number of the guide protrusions 203 and the second sliding grooves 1011 is two, the guide protrusions 203 are symmetrically arranged, the guide protrusions 203 move in the second sliding grooves 1011 when the handle 20 moves in the first accommodation chamber 101, and furthermore, by providing the guide protrusions 1011, a precondition is provided for preventing the handle 20 from moving in the direction of the second accommodation chamber 102 in the length direction of the handle 10.

Specifically, as shown in fig. 2, 3 and 6, the sidewall of the first accommodating cavity 101 further has an annular cavity 1012, and the annular cavity 1012 is preferably a circular cavity, the annular cavity 1012 is located at an end of the second sliding groove 1011 away from the cutter head, and each of the second sliding grooves 1011 communicates with the annular cavity 1012, and a cavity height of the annular cavity 1012 is equal to or greater than a thickness of the guide protrusion 203.

When the abutting portion 3021 is separated from the limiting portion 201, the tool shank 20 moves toward the cavity opening of the first accommodating cavity 101 under the action of the elastic force of the second elastic member 304, and at a certain moment, the two guide protrusions 203 slide into the annular cavity 1012 and abut against the wall surface of the annular cavity 1012, and at this time, the user only needs to rotate the tool shank 20 by a predetermined angle to make the two guide protrusions 203 abut against the side wall of the annular cavity 1012, so that the tool shank 20 does not move toward the second accommodating cavity 102 in the length direction of the grip 10.

Further, as shown in fig. 6, the cavity wall of the annular cavity 1012 has a plurality of grooves 10121, each groove 10121 is provided with a first magnet 10122, the guiding protrusions 203 are in one-to-one correspondence with the grooves 10121, when two guiding protrusions 203 slide into the annular cavity 1012 and rotate the tool shank 20 by a predetermined angle, each guiding protrusion 203 is opposite to the corresponding groove 10121, and under the attraction of the first magnet 10122, each guiding protrusion 203 moves a predetermined distance towards the second accommodating cavity 102 and is placed in the groove 10121, at this time, because the guiding protrusions 203 are placed in the grooves 10121, the tool shank 20 is difficult to rotate circumferentially, and at the same time, the tool shank 20 does not move a predetermined distance towards the second accommodating cavity 102 under the action of external force, so that the user can screw the tool shank 20.

It should be noted that, in the screwdriver in the prior art, one end of the grab handle is provided with a containing cavity for placing the tool bit, the containing cavity is screwed with the grab handle through a sealing cover to seal the cavity opening of the containing cavity, when the tool bit in the containing cavity is taken, a user needs to unscrew the sealing cover first, and after the sealing cover is placed, the tool bit is taken and placed, and then the sealing cover is screwed after the tool bit is taken and placed, so that the use process is complex and inconvenient.

In view of this, as shown in fig. 2, the screwdriver with the built-in bit further includes a sifting disc 40 rotatably installed at one end of the grip 10 having the second receiving cavity 102, specifically, a rivet is inserted through the sifting disc 40 and anchored into the grip 10, the sifting disc 40 is attached to or spaced apart from the end of the grip 10 by a predetermined distance, and it should be emphasized that the distance between the sifting disc 40 and the end of the grip 10 is smaller than the length dimension, width dimension and radial dimension of the bit, i.e., the bit will not be separated from the gap between the sifting disc 40 and the grip 10; in addition, the screening disc 40 has a through hole 401, when the screening disc 40 rotates by a predetermined angle, the through hole 401 is opposite to the second accommodating cavity 102, and when the through hole 401 is opposite to the second accommodating cavity 102, the screwdriver with the built-in tool bit is erected, and the corresponding tool bit can pass through the through hole 401 under the action of dead weight and be taken by a user. Compared with the prior art that the sealing cover is unscrewed, the screening disc 40 is rotated more quickly and conveniently in operation, and in addition, compared with the prior art that the sealing cover is required to be placed, the screening disc 40 is rotatably arranged on the grab handle 10, the placing step is omitted, and the cutter head taking and placing method has the advantage of being more convenient.

Further, as shown in fig. 2, a second magnet 402 is disposed on the sieving plate 40, as shown in fig. 2 and 4, a third magnet 50 is disposed at an end of the handle 10 having the second accommodating cavity 102, and after the sieving plate 40 rotates by a predetermined angle, the second magnet 402 is attracted to the third magnet 50, and it should be noted that when the second magnet 402 is attracted to the third magnet 50, the sieving plate 40 seals each second accommodating cavity 102, that is, normally, each cutter head is blocked by the plate body of the sieving plate 40 and cannot be separated from the corresponding second accommodating cavity 102.

Further, in order to prevent the cutter head from falling off after being mounted on the cutter handle 20, one end of the cutter handle 20, which is close to the cavity opening of the first accommodating cavity 101, is provided with a matching groove 204, a section of the matching groove 204 is hexagonal, a fourth magnet 2041 is arranged at the bottom of the matching groove 204, each cutter head is made of magnetic metal, including but not limited to 6150 chromium vanadium steel, and when the cutter head is placed in the matching groove 204, the cutter head is attracted to the fourth magnet 2041.

In summary, the screwdriver with the built-in tool bit according to the embodiment of the utility model is illustrated, which provides the advantages of smaller overall occupation space, portability, no exposure of the tool shank during carrying, more convenient tool bit taking and placing, and the like for the screwdriver with the built-in tool bit.

It should be noted that in the embodiment of the utility model, the screwdriver with the built-in tool bit has a simple structure, does not involve complex manufacturing process and expensive materials, and has higher economy. Meanwhile, for manufacturers, the screwdriver with the built-in tool bit is easy to produce, low in cost, beneficial to control of production cost and further beneficial to popularization and use of products.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from such principles.

Claims

1. A screwdriver with a concealed tool bit, which is characterized in that: the screwdriver with the built-in tool bit comprises

the cutter heads are arranged in each second accommodating cavity; and

2. The driver bit in accordance with claim 1, wherein: the trigger assembly comprises a pressing piece, a contact piece and a first elastic piece, wherein the contact piece is located between the pressing piece and the first elastic piece, two ends of the contact piece are respectively connected with the pressing piece and the first elastic piece, the pressing piece is arranged in the first sliding groove in a sliding mode, one end, away from the contact piece, of the first elastic piece is connected with the side wall of the first accommodating cavity, and the contact piece is clamped with or separated from the limiting part.

3. The driver bit in accordance with claim 2, wherein: the contact piece is far away from one end of the pressing piece and is provided with an abutting part and a component force part, the component force part is positioned at one end of the abutting part, which is far away from the pressing piece, one end of the component force part, which is close to the knife handle, is provided with an arc surface, and the abutting part and the limiting part are abutted or separated.

4. The driver bit in accordance with claim 2, wherein: the trigger assembly further comprises a plurality of second elastic pieces, each second elastic piece is located between the knife handle and the bottom wall of the first accommodating cavity, and two ends of each second elastic piece are respectively abutted to the knife handle and the bottom wall of the first accommodating cavity.

5. The screwdriver with a concealed bit according to claim 4, wherein: the side of handle of a knife has a plurality of direction arch, the lateral wall of first accommodation chamber has a plurality of second spout, every the second spout all with first accommodation chamber intercommunication, the direction arch with the second spout one-to-one, every the direction arch all stretches into in the second spout that corresponds.

6. The screwdriver with a concealed bit according to claim 5, wherein: the side wall of the first accommodating cavity is also provided with an annular cavity, the annular cavity is positioned at one end of the second sliding groove, which is away from the cutter head, each second sliding groove is communicated with the annular cavity, and the height of the cavity of the annular cavity is equal to or greater than the thickness of the guide protrusion.

7. The screwdriver with a concealed bit according to claim 6, wherein: the annular cavity is provided with a plurality of grooves on the cavity wall, and a first magnet is arranged in each groove.

8. A screwdriver with a built-in bit according to any one of claims 1 to 7, wherein: the screwdriver with the built-in tool bit further comprises a screening disc, the screening disc is rotatably installed at one end of the grab handle, which is provided with the second accommodating cavity, a through hole is formed in the screening disc, and after the screening disc rotates for a preset angle, the through hole is opposite to the second accommodating cavity.

9. The driver bit in accordance with claim 8, wherein: the screening tray is provided with a second magnet, one end of the grab handle with the second accommodating cavity is provided with a third magnet, when the screening tray rotates for a preset angle, the second magnet is attracted with the third magnet, and when the second magnet is attracted with the third magnet, the screening tray seals each second accommodating cavity.

10. The driver bit in accordance with claim 8, wherein: one end of the cutter handle, which is close to the cavity opening of the first accommodating cavity, is provided with a matching groove, the bottom of the matching groove is provided with a fourth magnet, and each cutter head is made of magnetic metal.