A tool attachment

Abstract

The utility model relates to the technical field of electric tool connection's tool accessory structure, specifically a kind of tool accessory, including accessory shell, sliding joint cover, it is characterized in that the end of the accessory shell is equipped with the joint cover accommodating groove of upper end opening and side surface opening, the end of the accessory shell is equipped with the angle positioning joint part integrally connected with accessory shell, the inner wall of the sliding joint cover is equipped with insertion part, the accessory shell is equipped with joint cover limiting portion, after the insertion part of the sliding joint cover inserts joint cover accommodating groove, it is limited in joint cover accommodating groove by the joint cover limiting portion connected with accessory shell, with simple structure, high assembling efficiency, easy to disassemble, the advantages such as realizing the quick connection and angle positioning of tool accessory.

Description

Technical Field

[0001] This utility model relates to the technical field of tool accessory structures for connecting power tools, specifically a tool accessory. Background Technology

[0002] As is well known, power tools such as electric drills are connected to various tool attachments, such as offsets, anglers, or drill chucks. How to achieve a specific angle for fixing these tool attachments to the power tool and quickly install them is one of the research directions for those in this field.

[0003] Currently, in the existing technology, the utility model patent with patent publication number CN204076204U entitled "Tool with Replaceable Tool Fixing Components" classifies the offset and angler as tool accessories. Both include an accessory housing, an output section, an input section, a steel ball, an inner ring, and a sliding engagement sleeve. The accessory housing is fitted over the input and output sections, which are connected. A steel ball is located on the inner wall of the input end of the input section. The inner ring is fitted over the outer wall of the input end, and its inner wall has a relief groove to accommodate the steel ball. The outer side of the inner ring connects to the sliding engagement sleeve, which is fitted over the accessory housing and slidably connected to it. The input end of the accessory housing is connected to an angle positioning connecting gear that engages with the connecting teeth of the power tool. The tool accessory achieves corresponding engagement through the angle positioning connecting gear and the connecting teeth of the power tool. However, since the angle positioning connecting gear needs to be separately connected to the accessory housing, the assembly efficiency is low and it is difficult to disassemble. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tool accessory that is simple in structure, has high assembly efficiency, is easy to disassemble, and enables quick connection and angle positioning of tool accessories.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A tool accessory includes an accessory housing and a sliding engagement sleeve. The accessory housing has an engagement sleeve receiving groove with an upper opening and a side opening at its end. The accessory housing also has an angle positioning engagement portion integrally connected to the accessory housing at its end. The sliding engagement sleeve has an insertion portion on its inner wall and an engagement sleeve limiting portion on the accessory housing. The insertion portion of the sliding engagement sleeve is inserted into the engagement sleeve receiving groove and then limited within the groove by the engagement sleeve limiting portion connected to the accessory housing.

[0006] The limiting part of the connecting sleeve described in this utility model is a retaining ring. The upper side of the accessory housing is provided with a retaining ring groove. The retaining ring is inserted into the retaining ring groove, and the retaining ring axially limits the insertion part of the sliding connecting sleeve.

[0007] The limiting part of the connecting sleeve described in this utility model is a limiting block, which is fixed at the upper end of the connecting sleeve receiving groove.

[0008] The accessory housing on the upper side of the coupling sleeve receiving groove of the present invention is provided with an installation groove for fixing the limiting block. The limiting block is placed on the installation groove and covers the upper opening of the coupling sleeve receiving groove. The limiting block is fixedly connected to the installation groove by a bolt passing through the limiting block.

[0009] The limiting block of this utility model includes an inner positioning ring and a limiting protrusion. The limiting protrusion is connected to the outside of the inner positioning ring. A snap-fit ​​groove is provided on the outside of the limiting protrusion. A snap-fit ​​groove communicating with the snap-fit ​​groove is provided on the upper side of the accessory housing. A snap-fit ​​swivel is inserted into the snap-fit ​​groove and the snap-fit ​​groove. The limiting block is limited to the upper side of the engagement sleeve receiving groove by the snap-fit ​​swivel.

[0010] The accessory housing on the upper end side of the coupling sleeve receiving groove of the present invention is provided with a radial receiving groove. The limiting block includes an insertion part and a limiting protrusion. The insertion part and the limiting protrusion are integrally connected. The insertion part is inserted into the radial receiving groove, and the limiting protrusion extends into the coupling sleeve receiving groove. The limiting block is axially limited by the radial receiving groove.

[0011] The opening of the snap ring described in this invention is smaller than the width of the receiving groove of the connecting sleeve, ensuring that the snap ring can limit the insertion part of the sliding connecting sleeve.

[0012] This utility model, due to the above-mentioned structure, has the advantages of simple structure, high assembly efficiency, easy disassembly, and quick connection and angle positioning of tool accessories. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1 A sectional view.

[0015] Figure 3 This is a structural schematic diagram of the accessory housing of this utility model.

[0016] Figure 4 This is a schematic diagram of the first connection method between the snap ring or limiting block and the accessory housing in this utility model.

[0017] Figure 5 This is a schematic diagram of the second connection method between the snap ring or limiting block and the accessory housing in this utility model.

[0018] Figure 6 This is a schematic diagram of the third connection method between the snap ring or limiting block and the accessory housing in this utility model.

[0019] Figure 7 This is a schematic diagram of the fourth connection method between the snap ring or limiting block and the accessory housing in this utility model.

[0020] Figure 8 yes Figure 1 Top view of the sliding joint sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: As shown in the attached figure, a tool accessory includes an accessory housing 1 and a sliding engagement sleeve 2. The accessory housing 1 has an engagement sleeve receiving groove 3 with an upper opening and a side opening at its end. An angle positioning engagement part 4 integrally connected to the accessory housing 1 is provided on the upper end face of the engagement sleeve receiving groove 3. An insertion part 5 is provided on the inner wall of the sliding engagement sleeve 2. An engagement sleeve limiting part 6 is provided on the accessory housing 1. After the insertion part 5 of the sliding engagement sleeve 2 is inserted into the engagement sleeve receiving groove 3, it is limited in the engagement sleeve receiving groove 3 by the engagement sleeve limiting part 6 connected to the accessory housing 1.

[0022] Furthermore, the limiting part 6 of the connecting sleeve is a retaining spring 7, and the upper side of the accessory housing 1 is provided with a retaining spring groove 8. The retaining spring 7 is inserted into the retaining spring groove 8, and the retaining spring 7 axially limits the insertion part 5 of the sliding connecting sleeve 2.

[0023] Furthermore, the connecting sleeve limiting part 6 is a limiting block 9, which is fixed to the upper end of the connecting sleeve receiving groove 3.

[0024] Furthermore, the accessory housing 1 on the upper side of the connecting sleeve receiving groove 3 is provided with an installation groove 10 for fixing the limiting block 9. The limiting block 9 is placed on the installation groove 10 and covers the upper opening of the connecting sleeve receiving groove 3. The limiting block 9 is fixedly connected to the installation groove 10 by a bolt 23 passing through the limiting block 9.

[0025] Furthermore, the limiting block 9 includes an inner positioning ring 11 and a limiting protrusion 12. The limiting protrusion 12 is connected to the outside of the inner positioning ring 11. The outer side of the limiting protrusion 12 is provided with a snap-fit ​​groove 13. The upper side of the accessory housing 1 is provided with a snap-fit ​​groove 8 that communicates with the snap-fit ​​groove 13. A snap-fit ​​7 is inserted into the snap-fit ​​groove 8 and the snap-fit ​​groove 13, and the limiting block 9 is limited to the upper side of the engagement sleeve receiving groove 3 by the snap-fit ​​7.

[0026] Furthermore, the accessory housing 1 on the upper end side of the connecting sleeve receiving groove 3 is provided with a radial receiving groove 14. The limiting block 9 includes a plug-in part 15 and a limiting protrusion 12. The plug-in part 15 and the limiting protrusion 12 are integrally connected. The plug-in part 15 is inserted into the radial receiving groove 14, and the limiting protrusion 12 extends into the connecting sleeve receiving groove 3. The limiting block 9 is axially limited by the radial receiving groove 14.

[0027] Furthermore, the opening of the retaining spring 7 is smaller than the width of the receiving groove 3 of the connecting sleeve, ensuring that the retaining spring 7 can limit the insertion part 5 of the sliding connecting sleeve 2.

[0028] The aforementioned tool accessories also include an output section 16, an input section 17, a steel ball 18, and an inner ring 19. The accessory housing 1 is fitted over the input section 17 and the output section 16, which are connected. A steel ball 18 is provided on the inner wall of the input end of the input section 17. The inner ring 19 is fitted over the outer wall of the input end, and its inner wall has a relief groove to accommodate the steel ball 18. The insertion part 5 of the sliding engagement sleeve 2 is inserted through the engagement sleeve receiving groove 3 and connected to the inner ring 19. An inner return spring 20 is fitted over the input section 17 below the inner ring 19. A engagement sleeve limiting part 6 is connected to the upper part of the accessory housing 1 of the engagement sleeve receiving groove 3, limiting the insertion part 5 of the sliding engagement sleeve 2 within the engagement sleeve receiving groove 3. The inner part of the sleeve 2 is provided with an outer limiting spring 21. The upper end of the outer limiting spring 21 contacts the lower end face of the insertion part 5 of the sliding engagement sleeve 2. The lower end of the outer limiting spring 21 extends into the spring storage groove 22 provided in the accessory housing 1. During installation, it is only necessary to put the sliding engagement sleeve 2 on the accessory body and limit the connection through the engagement sleeve limiting part 6. There is no need to set a separate angle positioning connecting tooth plate for connection. During use, the angle positioning engagement part 4 integrally connected to the upper end of the accessory housing 1 can be directly locked on the connecting tooth of the power tool. The assembly efficiency is high and it is easy to disassemble. Due to the above structure, this utility model has the advantages of simple structure, high assembly efficiency, easy disassembly, and quick connection and angle positioning of tool accessories.

[0029] In the above scheme, the connecting sleeve limiting part 6 is a retaining spring 7 or a limiting block 9, and the connection between the retaining spring 7 or the limiting block 9 and the accessory housing 1 can be in the following four ways: The first connection method is a retaining ring 7 and an accessory housing 1. The accessory housing 1 has a retaining ring groove 8 on its upper side. The retaining ring 7 is inserted into the retaining ring groove 8. The retaining ring 7 is locked at the upper opening of the connecting sleeve receiving groove 3 to limit the axial direction of the insertion part 5 of the sliding connecting sleeve 2. The opening of the retaining ring 7 is smaller than the width of the connecting sleeve receiving groove 3 to ensure that the retaining ring 7 can limit the insertion part 5 of the sliding connecting sleeve 2.

[0030] The second connection method is a limiting block 9 and an accessory housing 1. The accessory housing 1 on the upper side of the connecting sleeve receiving groove 3 is provided with an installation groove 10 for fixing the limiting block 9. The limiting block 9 is placed on the installation groove 10 and covers the upper opening of the connecting sleeve receiving groove 3. The bottom of the installation groove 10 is provided with a threaded hole. The limiting block 9 is fixedly connected to the installation groove 10 by a bolt passing through the limiting block 9.

[0031] The third connection method is a retaining ring 7, a limiting block 9, and an accessory housing 1. The limiting block 9 includes an inner positioning ring 11 and a limiting protrusion 12. The limiting protrusion 12 is connected to the outside of the inner positioning ring 11. A snap-fit ​​groove 13 is provided on the outside of the limiting protrusion 12. A retaining ring groove 8 communicating with the snap-fit ​​groove 13 is provided on the upper side of the accessory housing 1. A retaining ring 7 is inserted into the retaining ring groove 8 and the snap-fit ​​groove 13. The retaining ring 7 limits the limiting block 9 to the upper position of the connecting sleeve receiving groove 3.

[0032] The fourth connection method is a limiting block 9 and an accessory housing 1. The accessory housing 1 on the upper side of the connecting sleeve receiving groove 3 is provided with a radial receiving groove 14. The limiting block 9 includes a plug-in part 15 and a limiting protrusion 12. The plug-in part 15 and the limiting protrusion 12 are integrally connected. The plug-in part 15 is inserted into the radial receiving groove 14, and the limiting protrusion 12 extends into the connecting sleeve receiving groove 3. The limiting block 9 is axially limited by the radial receiving groove 14.

[0033] All four connection methods described above limit the insertion part 5 of the sliding engagement sleeve 2 to the axial direction of the engagement sleeve receiving groove 3 by the engagement sleeve limiting part 6, which facilitates assembly and disassembly.

Claims

1. A tool accessory, comprising an accessory housing and a sliding engagement sleeve, characterized in that... The accessory housing has a top opening and a side opening at its end, forming a receiving groove for the connecting sleeve. The end of the accessory housing has an angle positioning connecting part integrally connected to the accessory housing. The inner wall of the sliding connecting sleeve has an insertion part. The accessory housing has a connecting sleeve limiting part. After the insertion part of the sliding connecting sleeve is inserted into the receiving groove for the connecting sleeve, it is limited within the receiving groove by the connecting sleeve limiting part.

2. A tool accessory according to claim 1, characterized in that... The limiting part of the connecting sleeve is a retaining ring. The upper side of the accessory housing is provided with a retaining ring groove. The retaining ring is inserted into the retaining ring groove, and the retaining ring axially limits the insertion part of the sliding connecting sleeve.

3. A tool accessory according to claim 1, characterized in that... The limiting part of the connecting sleeve is a limiting block, and the limiting block is fixed at the upper end of the connecting sleeve receiving groove.

4. A tool accessory according to claim 3, characterized in that... The accessory housing on the upper side of the connecting sleeve receiving groove is provided with a mounting groove for fixing the limiting block. The limiting block is placed on the mounting groove and covers the upper opening of the connecting sleeve receiving groove. The limiting block is fixedly connected to the mounting groove by bolts passing through the limiting block.

5. A tool accessory according to claim 3, characterized in that... The limiting block includes an inner positioning ring and a limiting protrusion. The limiting protrusion is connected to the outside of the inner positioning ring. A snap-fit ​​groove is provided on the outside of the limiting protrusion. A snap-fit ​​groove communicating with the snap-fit ​​groove is provided on the upper side of the accessory housing. A snap-fit ​​swivel is inserted into the snap-fit ​​groove and the snap-fit ​​groove, and the limiting block is limited to the upper side of the engagement sleeve receiving groove by the snap-fit ​​swivel.

6. A tool accessory according to claim 3, characterized in that... The accessory housing on the upper end side of the connecting sleeve receiving groove is provided with a radial receiving groove. The limiting block includes a plug-in part and a limiting protrusion. The plug-in part and the limiting protrusion are integrally connected. The plug-in part is inserted into the radial receiving groove, and the limiting protrusion extends into the connecting sleeve receiving groove. The limiting block is axially limited by the radial receiving groove.

7. A tool accessory according to claim 2, characterized in that... The opening of the retaining ring is smaller than the width of the receiving groove of the engagement sleeve.

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