CN216801705U

CN216801705U - Electric wrench switching sleeve and electric wrench tool

Info

Publication number: CN216801705U
Application number: CN202220247102.3U
Authority: CN
Inventors: 陈云
Original assignee: Danyang Feiyang Tool Factory
Current assignee: Jiangsu Feiyang Metal Products Co.,Ltd.
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-06-24
Anticipated expiration: 2032-01-30

Abstract

The utility model discloses an electric wrench adapter sleeve and an electric wrench tool, and belongs to the field of sleeve tools. The electric wrench adapter sleeve comprises a sleeve barrel-shaped structure and a lock sleeve, wherein one end of the sleeve barrel is provided with a wrench interface connected with an electric wrench, and the other end of the sleeve barrel is in threaded connection with the lock sleeve; a twisting hole and a clamping hole are axially arranged in the sleeve, and the twisting hole is positioned at the inner side end of the clamping hole; at least one torsion surface is arranged in the twisting hole and used for transmitting torque to the rod handle; the clamping hole is used for locking the rod handle, the rod handle penetrating through the clamping hole can be clamped and locked by controlling the threaded engagement length of the sleeve and the lock sleeve, a good clamping effect can be achieved, the drill rod is guaranteed not to shake, and the drill rod is not prone to falling off.

Description

Electric wrench switching sleeve and electric wrench tool

Technical Field

The utility model relates to the technical field of sleeve tools, in particular to an electric wrench adapting sleeve and an electric wrench tool.

Background

At present, electric tools are more and more widely used, particularly, electric wrenches, electric drills and other convenient tools are popular among people due to multiple functions and simple operation of the electric wrenches in the using process, but the sleeves for the electric wrenches on the market still have certain limitations.

For example, when drilling, the drill bit can be directly installed on the electric wrench chuck for use convenience, and the drill handles of a plurality of small-size drill bits are also of hexagonal handle structures and can be directly installed on the wrench sleeve for use, and the electric wrench is used for drilling.

Although the hexagonal quick connector of the electric wrench can clamp a drill bit, the hexagonal quick connector is mostly in a clamping mode at present, the requirement on the precision of drilling is high, and the hexagonal quick connector can easily shake during drilling to influence the drilling precision.

In order to solve the above problems, in the patent of publication No. CN 202556376U, the inventor proposes that the three-jaw chuck of the electric drilling machine can be directly modified and then installed on the electric wrench, and the whole structure is complicated and the practicability is poor.

In the patent of publication number CN 213081260U, the inventor provides an electric wrench connector, in this scheme, be equipped with the quad slit of being connected with electric wrench on the fixed part, be equipped with the elasticity on the clamping part and press from both sides the cover, be equipped with the centre gripping mouth in the elasticity presss from both sides the cover, the size of centre gripping mouth is adjusted in the cooperation of adjusting collar and clamping part, can be applicable to not unidimensional small-size drill bit. This scheme has given the connected mode of drill bit, relies on the elasticity to press from both sides the clamping that the cover realized the drillstock fixed, but when using, violent vibrations can lead to the screw thread to have some not hard up, and then can lead to the centre gripping unstable, and the accuracy control problem is difficult to solve.

SUMMERY OF THE UTILITY MODEL

The problem of the not wayward rotation precision by the centre gripping drillstock of spanner adapter among the prior art is provided an electric spanner switching sleeve and electric spanner instrument, can provide great moment of torsion and avoid by the problem of rocking of centre gripping drillstock when using electric spanner.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the utility model relates to an electric wrench adapting sleeve which is used for connecting a drill bit and an electric wrench, and comprises a sleeve with a cylindrical structure and a lock sleeve, wherein one end of the sleeve is provided with a wrench interface for connecting the electric wrench, and the other end of the sleeve is in threaded connection with the lock sleeve; a twisting hole and a clamping hole are axially arranged in the sleeve, and the twisting hole is positioned at the inner side end of the clamping hole; the torsional hole is internally provided with at least one torsional surface for transmitting torque to the drill handle; the clamping hole is used for locking the drill shank, and the drill shank passing through the clamping hole can be clamped and locked or unlocked by controlling the threaded engagement length of the sleeve and the lock sleeve.

As an improvement of an electric wrench switching sleeve, the sleeve mainly comprises a sleeve opening section, a thread section and clamping jaws which are coaxially and sequentially arranged, and the clamping holes are formed in the areas surrounded by the clamping jaws; one end of the lock sleeve can be sleeved on the clamping jaw and meshed with the threaded section, and an annular inclined surface is formed on the inner side of the other end of the lock sleeve and used for enabling the clamping jaw to approach the central shaft to generate clamping action.

As an improvement of the electric wrench switching sleeve, the clamping jaw and the thread section are of an integral structure, the outer side surface of the end part of the clamping jaw is of an inclined surface structure and is used for being matched with the inner inclined surface of the lock sleeve, and when the two inclined surfaces are in contact extrusion with each other, the end part of the clamping jaw approaches to the axis; when the two inclined planes are far away from each other, the clamping jaw is reset through self elasticity.

As an improvement of an electric wrench switching sleeve, the inclined surface structure of the clamping jaw is formed by gradually reducing the thickness of the outer wall of the end part of the clamping jaw; the inner side inclined plane of the lock sleeve is formed by gradually reducing the radial dimension of the inner side wall at the position close to the port.

As an improvement of the electric wrench adapter sleeve, the twisting hole is at least partially positioned in the corresponding region of the sleeve opening section and/or the threaded section.

As an improvement of the electric wrench switching sleeve, one end of the sleeve opening section, which is close to the threaded section, is provided with the twisting hole, and the twisting hole penetrates through the threaded section.

As an improvement of the electric wrench switching sleeve, at least one torsion surface is arranged in the torsion hole, and the torsion surface is a plane or an arc surface and is used for transmitting torque; the torsion surface forms a limit bulge relative to the side wall of the clamping hole.

As an improvement of the electric wrench adapting sleeve, the twisting hole is provided with four twisting surfaces, the cross section of the twisting hole is of a rectangular structure, and the twisting hole is communicated with an inner hole of the wrench interface.

As the improvement of the electric wrench switching sleeve, the wrench connector is of a square hole structure, an annular groove is formed in the neck of the outer side wall of the sleeve opening section, and a bolt hole is formed in the annular groove.

As an improvement of the electric wrench adapting sleeve, the radial dimension of the clamping hole is 8-12.5 mm.

The utility model relates to an electric wrench tool, which comprises an electric wrench and the switching sleeve, wherein a square head is arranged at the end part of the electric wrench, a wrench connector of the sleeve is a square hole, the square head is inserted into the square hole, a bolt is inserted into the bolt hole, and a hoop in an annular groove is used for limiting, so that the electric wrench is connected with the switching sleeve.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) the sleeve clamping part is divided into a twisting hole and a clamping hole to form a two-section structure, wherein the twisting hole is used for transmitting torque, so that the force required by drilling can be provided; the clamping hole is used for realizing locking clamping, can play a good clamping role, ensures that the drill rod does not shake, has higher rotation precision, and is not easy to fall off by a clamping drill handle.

(2) According to the embodiment of the partial clamping jaw, the clamping jaw is directly formed by extending the threaded section, so that the clamping jaw is simple in structure and convenient to use, can greatly reduce the occupied space, saves the cost, and is more suitable for popularization and use.

Drawings

FIG. 1 is a schematic view of one embodiment of a wrench socket;

FIG. 2 is a schematic view of an embodiment of a wrench socket in combination with a drill bit;

FIG. 3 is a schematic view of a sleeve having a longer internal thread;

fig. 4 is a schematic structural view of an embodiment in which the torsion holes are located in the cuff section.

Description of the reference symbols: 11. drilling a body; 12. a drill shank; 141. a clamping section; 122. torsion section

2. A lock sleeve; 21. an internal thread; 22. a force application slope;

3. a sleeve; 31. a cuff section; 32. a threaded segment; 33. a clamping jaw; 34. twisting holes; 35. a clamping hole; 36. pressing the inclined plane; 37. a wrench interface.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

Examples

Referring to fig. 1, the electric wrench adapting sleeve of the present embodiment includes a sleeve 3 and a lock sleeve 2, where one end of the sleeve 3 is provided with a wrench interface for connecting an electric wrench, and the other end of the sleeve is connected with the lock sleeve 2 by a thread.

In this embodiment, a twist hole 34 and a clamp hole 35 are provided in the sleeve 3 in the axial direction, and the twist hole 34 is located at the inner end of the clamp hole 35. In fig. 1, the right side of the holding hole 35 is its outside end, and the left side is its inside end. Wherein at least one torque surface is provided in the twist hole 34 for transmitting torque to the drill shank.

The sleeve 3 is mainly formed by coaxially and sequentially connecting a sleeve opening section 31, a thread section 32 and clamping jaws 33, and the clamping holes 35 are formed in the area surrounded by the clamping jaws 33. The clamping hole 35 is used for locking the drill shank, and the drill shank passing through the clamping hole 35 can be clamped and locked or unlocked by controlling the threaded engagement length of the sleeve 3 and the lock sleeve 2.

Taking the mounting structure shown in fig. 2 as an example, the drill shank 12 of the drill bit 1 includes a holding end 121 and a torsion section 122, and the twist hole 34 and the torsion section 142 cooperate for transmitting torque. Here, the fit is to be consistent in shape so that they can be snapped into each other. The clamping section 141 of the drill bit is at least partially located in the clamping hole 35, and the clamping section 141 is clamped and locked or unlocked by controlling the threaded engagement length of the sleeve 3 and the lock sleeve 2. When the lock sleeve and the sleeve are screwed tightly, the clamping section 141 is positioned in the clamping hole and clamped by the sleeve 3, and on the contrary, the clamping section 141 is loosened and can be disassembled.

The internal thread 121 is arranged at one end of the inner hole of the lock sleeve 2, the lock sleeve 2 can be sleeved on the clamping jaw 33 and meshed with the thread section 32, and the lock sleeve 2 is connected with the sleeve 3. An annular inclined surface is formed on the inner side of the other end of the lock sleeve 2, and when the lock sleeve moves through the rotation of the screw thread, the annular inclined surface can press the clamping jaw 33 to enable the clamping jaw 33 to approach the central shaft to generate clamping action, so that a drill shank of a drill bit can be locked. The socket section 31 of the adapter is provided with a wrench interface 37 for connecting a connector of a wrench device.

As an embodiment of the clamping jaws, it may be in the form of external clamping jaws as in CN 213081260U, or in the form of clamping jaws integrated with the sleeve.

The twist hole 34 and the clamping hole 35 in the above embodiment form a two-stage structure, the twist hole 34 is used for transmitting torque, the clamping hole 35 is used for realizing locking clamping, and the two realize different functions. During drilling, on the one hand, sufficient torque is provided and, on the other hand, the accuracy of the drilling is ensured. When the structure of this embodiment is adopted, the required power of drilling can be provided in the twist hole assurance, and the centre gripping hole can play fine clamping action, guarantees that the drilling rod does not rock, and the drill bit is difficult for droing moreover.

As another embodiment of the clamping jaws, in this embodiment, the lock sleeve 2 is a cylindrical structure, an internal thread 21 is provided inside one end of the lock sleeve 2, and can be sleeved on the clamping jaw 33 and engaged with the threaded section 32, and the clamping jaw 33 is also located inside the lock sleeve. An annular inclined surface is formed on the inner side of the other end of the lock sleeve 2 and is a force application inclined surface 22, and the radial dimension of the annular force application inclined surface 22 is gradually reduced in the direction away from the threaded section, namely the radial dimension of the inner side wall at the position close to the port is gradually reduced.

In this embodiment, the outer side surface of the front end of the clamping jaw 33 is an inclined surface structure, and the thickness of the outer wall of the front end of the clamping jaw 33 is gradually reduced along the direction departing from the threaded section, so as to form a pressing inclined surface 36. The press-fit slope 36 is engaged with the inner force application slope 22 of the lock case 2. When the lock sleeve 2 is screwed to the left, the engagement length of the screw thread section is increased, and the force application inclined surface 22 presses the pressing inclined surface 36 to the left, so that the clamping jaw 33 approaches the central axis to lock the clamping section 141. When the lock sleeve 2 is unscrewed to the right side, the pressing inclined surface 36 is gradually loosened, the clamping jaw 33 is reset by the elasticity of itself, and then the clamping section 141 is loosened.

As another embodiment of the adapter sleeve, in this embodiment, a torsion hole 34 is provided at an end of the collar section 31 near the threaded section 32, the torsion hole 34 is engaged with the torsion section 142, and the depth of the torsion hole 34 can be set according to the length of the torsion section 142. As shown in fig. 3, the torsion hole 34 may extend through the threaded section 32 and have a certain extension in the collar section 31, and the threaded section 32 and the collar section 31 have a larger thickness to provide sufficient torsion.

Of course, as another embodiment, the twist hole 34 may be formed to occupy only the threaded section 32 or the spigot section 31 by changing the length of the twist section on the drill shank. As shown in fig. 4, a twist hole 34 is located in the socket section 31 and a clamping hole extends to the threaded section 32.

The jaws 33 are formed by a threaded section 32 extending partially outward, the threaded section 32 being integral with the jaws so that the plurality of jaws 33 are coaxial about an axis with the threaded section 32. The number of the clamping jaws 33 can be multiple, and generally 3 or 4 can be selected.

In this embodiment, the plurality of jaws 33 are uniformly distributed in the circumferential direction, and a gap is left between the adjacent jaws. The cross-section of clamping jaw 33 is the arc structure, and has certain length in the axial, and after screwing up the lock sleeve and making the clamping jaw receive the extrusion force, the one end that clamping jaw 33 kept away from screw thread section 32 can inwards be extruded to locking clamping section.

As an illustration of the twist hole embodiment, the torque surface in the twist hole 34 is a flat or curved surface for transmitting torque; the torsion surface forms a limit protrusion with respect to the sidewall of the holding hole 35. For example, two torsion surfaces can be symmetrically arranged, and a limit protrusion with a certain distance can be formed between the torsion surfaces and the inner wall of the clamping hole.

Because current drill bit and hexagonal spanner are hexagonal structure, for better logical type of joining in marriage, the wrench hole can set up to the hexagonal hole, and its cross-section is the hexagon.

For some large-sized drills, such as the stepped drill shown in fig. 2, which has a large torque capacity, the drill shank 12 is easily broken, so that a larger size can be used, and the torsion section is configured to be a square structure, and the corresponding torsion hole is a square hole having four torsion surfaces. The radial dimension of the clamping hole 35 can be controlled to be 8-12.5mm, for example, 10.2mm can be adopted, and the clamping hole can be matched with a 10mm drill shank 12.

The torsion surface in this embodiment and the above embodiments may be a plane, or may be an arc surface having a certain protrusion or recess.

Furthermore, the wrench interface 37 is of a hole structure, for example, a square hole structure, and the twisting hole 34 is communicated with an inner hole of the wrench interface, so that the twisting hole can be processed more conveniently. In addition, an annular groove is formed in the neck of the outer side wall of the looping section, and a bolt hole is formed in the annular groove. Used for connecting a wrench joint.

As an embodiment of the electric wrench, the present embodiment may be implemented in combination with the component structure in the above-described embodiments. The electric wrench connector in this embodiment is a square head with a quadrangular prism structure, so the wrench interface 37 is a square opening matched with the electric wrench connector. The twist hole 34 extends through the threaded section 32 and communicates with the wrench socket 37 for ease of machining.

It should be noted that, when the cross section of the wrench interface 37 is a quadrilateral structure, the center of the twisting hole 34 coincides with the center of the wrench interface 37, the embodiment does not limit the parallel arrangement of the twisting hole 34 and the side of the wrench interface 37, and the position of the side of the twisting hole 34 can be determined comprehensively according to the processing convenience, the cost and other factors under the condition of allowable space and strength. An annular groove can be arranged at the neck part of the outer side wall of the looping section 31, and a bolt hole is arranged on the annular groove. When the wrench device is connected with the joint, the pin is inserted into the plug pin hole, and the rubber ring or the metal snap ring on the pin is sleeved on the annular groove to prevent the pin from falling off.

In use, with reference to fig. 2, the drill shank 12 of the tapered step drill is inserted into the sleeve 3, the torque section 122 enters the twist hole 34, and the clamping section 121 is positioned in the corresponding section of the clamping jaw 33; the lock sleeve 3 is then tightened, and the clamping jaws 33 are tightly fitted inwardly on the clamping segments 141, so that the drill shank 14 is locked and fixed, and then can be mounted on an electric wrench for drilling.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides an electric spanner switching sleeve for being connected of drill bit and electric spanner, its includes the sleeve and the lock sleeve of tubular structure, its characterized in that:

one end of the sleeve is provided with a wrench interface connected with an electric wrench, and the other end of the sleeve is in threaded connection with the lock sleeve;

a twisting hole and a clamping hole are axially arranged in the sleeve, and the twisting hole is positioned at the inner side end of the clamping hole; at least one torsion surface is arranged in the twisting hole and used for transmitting torque to the rod handle;

the clamping hole is used for locking the rod handle, and the rod handle passing through the clamping hole can be clamped and locked or unlocked by controlling the threaded engagement length of the sleeve and the lock sleeve.

2. The electrical wrench adapter sleeve of claim 1, wherein: the sleeve mainly comprises a sleeve opening section, a thread section and clamping jaws which are coaxially and sequentially arranged, and the clamping holes are formed in the area surrounded by the clamping jaws; one end of the lock sleeve can be sleeved on the clamping jaw and meshed with the threaded section, and an annular inclined surface is formed on the inner side of the other end of the lock sleeve and used for enabling the clamping jaw to approach the central shaft to generate clamping action.

3. The electrical wrench adapter sleeve of claim 2, wherein: the clamping jaw and the thread section are of an integral structure, the outer side face of the end part of the clamping jaw is of an inclined face structure and is used for being matched with the inner inclined face of the lock sleeve, and when the two inclined faces are in contact extrusion with each other, the end part of the clamping jaw approaches to the axis; when the two inclined planes are far away from each other, the clamping jaw is reset through self elasticity.

4. The electrical wrench adapter sleeve of claim 3, wherein: the inclined plane structure of the clamping jaw is formed by gradually reducing the thickness of the outer wall of the end part of the clamping jaw; the inner side inclined plane of the lock sleeve is formed by gradually reducing the radial dimension of the inner side wall at the position close to the port.

5. The electrical wrench adapter sleeve of claim 1, wherein: the twist hole is at least partially located in the corresponding region of the sleeve opening section and/or the thread section.

6. The electrical wrench adapter sleeve of claim 5, wherein: the twisting hole is arranged at one end, close to the threaded section, of the sleeve opening section, and penetrates through the threaded section.

7. An electrical wrench adaptor socket as claimed in claim 5, wherein: at least one torsion surface is arranged in the twisting hole, and the torsion surface is a plane or an arc surface and is used for transmitting torque; the torsion surface forms a limit bulge relative to the side wall of the clamping hole.

8. The electrical wrench adapter sleeve of claim 7, wherein: the twisting hole is provided with four twisting surfaces, the cross section of the twisting hole is of a rectangular structure, and the twisting hole is communicated with an inner hole of the wrench interface.

9. The electrical wrench adapter sleeve of claim 7, wherein: the wrench connector is of a square hole structure, an annular groove is formed in the neck of the outer side wall of the sleeve opening section, and a bolt hole is formed in the annular groove.

10. An electric wrench adaptor socket as claimed in any one of claims 1 to 9, wherein: the radial dimension of the clamping hole is 8-12.5 mm.

11. An electric wrench tool, comprising: the adapter sleeve comprises an electric wrench and any one of the adapter sleeves of claims 1-10, wherein a square head is arranged at the end of the electric wrench, the wrench interface of the sleeve is a square hole, the square head is inserted into the square hole, a bolt is inserted into the bolt hole, and a clamping hoop in an annular groove is used for limiting, so that the electric wrench is connected with the adapter sleeve.