CN218697226U

CN218697226U - Electric grinder convenient for locking rotating shaft assembly

Info

Publication number: CN218697226U
Application number: CN202222853251.7U
Authority: CN
Inventors: 董明宏
Original assignee: Ningbo Hongtai Power Tools Industry Co ltd
Current assignee: Ningbo Hongtai Power Tools Industry Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-24
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses an electric grinder convenient for locking a rotating shaft component, which comprises a shell, a motor, a rotating shaft component and a grinding head; a bolt vertical to the rotating shaft assembly is movably arranged on the side wall of the shell in a penetrating mode, an inserting groove is formed in the side wall of the rotating shaft assembly, a spring is sleeved on the bolt located on the outer side of the shell, and a clamp spring is clamped on the bolt located on the inner side of the shell in a matched and clamped mode; the electric grinder also comprises a support sleeve and a rotating sleeve, wherein the support sleeve is sleeved outside the shell and is circumferentially limited on the shell, the rotating sleeve is rotatably sleeved outside the support sleeve, a protruding part is arranged on the inner wall of the rotating sleeve, an arc-shaped surface is arranged on the inner wall of the protruding part, the arc-shaped surface gradually shrinks inwards from one end to the other end, and the outer end part of the plug pin abuts against the arc-shaped surface; a reset structure is arranged between the rotating sleeve and the supporting sleeve; the utility model discloses the top that can the bolt pushes away brings the convenience, can bring the convenience for the locking of pivot subassembly promptly.

Description

Electric grinder convenient for locking rotating shaft assembly

Technical Field

The utility model relates to a hardware and tools technical field, concretely relates to electric mill convenient to pivot subassembly locking.

Background

The electric grinder is a hardware tool for driving a grinding head to rotate so that the grinding head can grind a workpiece or a product, and the electric grinder on the market at present comprises a shell, a motor, a rotating shaft assembly and the grinding head, wherein the motor is fixed inside the shell, the rear end of the rotating shaft assembly is in transmission connection with an output shaft of the motor, and the front end of the rotating shaft assembly extends out of the shell and is in transmission connection with the grinding head; the side wall of the shell is movably provided with a bolt perpendicular to the rotating shaft component in a penetrating mode, the side wall of the rotating shaft component is provided with a slot for inserting the inner end part of the bolt, the bolt positioned on the outer side of the shell is sleeved with a spring, the bolt positioned on the inner side of the shell is in matched clamping with a clamp spring used for preventing the bolt from being separated from the shell, when the outer end part of the bolt is pushed to enable the inner end part of the bolt to be inserted into the slot, the bolt is used for locking the rotating shaft component to prevent the rotating shaft component from rotating relative to the shell, and when the outer end part of the bolt is released, the spring is used for driving the bolt to move outwards to reset so that the inner end part of the bolt is separated from the slot; in the electric grinding structure, when the grinding head needs to be replaced, firstly, the bolt is pushed by fingers so that the inner end part of the bolt is inserted into the slot and then the rotating shaft assembly is locked, after the rotating shaft assembly is locked, the locking sleeve at the front end of the rotating shaft assembly can be unscrewed to replace the grinding head, and after the grinding head is replaced, the locking sleeve at the front end of the rotating shaft assembly is screwed again and the bolt is released so that the bolt releases the locking of the rotating shaft assembly; however, in the above process, since the plug pin is directly pushed by a finger, but the outer diameter of the plug pin is smaller, in the process of pushing the plug pin, the plug pin is inconvenient to push, that is, the rotating shaft assembly is inconvenient to lock.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides an electric mill convenient to pivot subassembly locking, its top that can the bolt pushes away and brings the convenience, can bring the convenience for the locking of pivot subassembly promptly.

The utility model discloses an electric grinder convenient for locking of a rotating shaft component, which comprises a shell, a motor, a rotating shaft component and a grinding head, wherein the motor is fixed inside the shell, the rear end of the rotating shaft component is in transmission connection with an output shaft of the motor, and the front end of the rotating shaft component extends out of the shell and is in transmission connection with the grinding head; the side wall of the shell is movably provided with a bolt perpendicular to the rotating shaft component in a penetrating mode, the side wall of the rotating shaft component is provided with a slot for inserting the inner end part of the bolt, the bolt positioned on the outer side of the shell is sleeved with a spring, the bolt positioned on the inner side of the shell is in matched clamping with a clamp spring used for preventing the bolt from being separated from the shell, when the outer end part of the bolt is pushed to enable the inner end part of the bolt to be inserted into the slot, the bolt is used for locking the rotating shaft component to prevent the rotating shaft component from rotating relative to the shell, and when the outer end part of the bolt is released, the spring is used for driving the bolt to move outwards to reset so that the inner end part of the bolt is separated from the slot; the electric grinder also comprises a support sleeve and a rotating sleeve, wherein the support sleeve is sleeved outside the shell and is circumferentially limited on the shell, the rotating sleeve is rotatably sleeved outside the support sleeve, a protruding part is arranged on the inner wall of the rotating sleeve, an arc-shaped surface extending along the circumferential direction of the rotating sleeve is arranged on the inner wall of the protruding part, the arc-shaped surface gradually shrinks inwards from one end to the other end, and the outer end part of the plug pin abuts against the arc-shaped surface; when the rotating sleeve rotates towards one side relative to the supporting sleeve, the outer end part of the bolt gradually slides from one end of the arc-shaped surface to the other end of the arc-shaped surface so that the arc-shaped surface gradually pushes the bolt inwards, and when the rotating sleeve rotates towards the other side relative to the supporting sleeve, the outer end part of the bolt gradually slides from the other end of the arc-shaped surface to one end of the arc-shaped surface so that the arc-shaped surface gradually releases the bolt; a reset structure is arranged between the rotating sleeve and the supporting sleeve, and when the rotating sleeve is released, the reset structure is used for driving the rotating sleeve to enable the rotating sleeve to rotate and reset towards the other side relative to the supporting sleeve.

By adopting the above structure, the utility model, the top to the bolt is realized by the rotation that relies on the rotating sleeve, adopts the direct mode that pushes away the bolt of finger to compare with the tradition promptly, and the top that can the bolt pushes away brings the convenience, also can bring the convenience for the locking of pivot subassembly.

The utility model discloses an electric grinder convenient to pivot subassembly locking, wherein, reset structure includes the extension spring, and one end and the outer wall of support cover of extension spring are connected, and the other end and the inner wall of rotating sleeve of extension spring are connected, and when releasing the rotating sleeve, the extension spring is used for driving the rotating sleeve so that the rotating sleeve relatively supports the cover and rotates towards the opposite side and reset; after adopting this kind of reset structure, when releasing the rotating sleeve, the extension spring can drive the rotating sleeve so that the rotating sleeve relatively supports the cover and rotate towards the opposite side and reset, and this reset structure has simple structure and advantage with low costs.

The utility model discloses an electric grinder convenient for locking a rotating shaft assembly, wherein, a limit stop is arranged on the outer wall of a supporting sleeve, and after the rotating sleeve rotates and resets towards the other side relative to the supporting sleeve, the limit stop is used for abutting against a convex part to limit the rotating sleeve to continue rotating; through limit stop's setting, after rotating the cover and supporting the cover relatively and rotate the reduction towards the opposite side, limit stop can support with the bulge and lean on in order to restrict to rotate the cover and continue to rotate to can avoid rotating the cover and appear by the excessive pivoted condition.

The utility model discloses an electric grinder convenient for locking a rotating shaft assembly, wherein, the tension spring comprises an elastic part positioned in the middle part and a first pull ring and a second pull ring which are respectively connected with the two ends of the elastic part, the first pull ring is connected with a supporting sleeve, and the second pull ring is connected with a rotating sleeve; by adopting the structure, the first pull ring is connected with the support sleeve, and the tension spring can be reliably connected with the support sleeve and the rotating sleeve after the second pull ring is connected with the rotating sleeve.

The utility model discloses an electric grinder convenient for locking a rotating shaft component, wherein, a first inserting column and a first caulking groove are arranged on the outer wall of a supporting sleeve, the first inserting column is inserted and matched with a first pull ring, and the first caulking groove is embedded with a tension spring between the first pull ring and an elastic part; after adopting this kind of structure, first pull ring can be conveniently and reliably link together with supporting the cover, and under the effect of first caulking groove, when the elastic component stretches out and draws back, can avoid first pull ring first grafting post pivoted condition relatively to appear, can ensure promptly that the extension spring is to the tension force that the rotating sleeve applyed.

The utility model discloses an electric grinder convenient to pivot subassembly locking, wherein, be provided with second inserted column and second caulking groove on the inner wall of rotating sleeve, second inserted column and second pull ring cooperation grafting, second caulking groove and the extension spring gomphosis that is located between second pull ring and the elastic component; after adopting this kind of structure, the second pull ring can be conveniently and reliably be in the same place with rotating the cover and connecting, and under the effect of second caulking groove, when the elastic component stretches out and draws back, can avoid the second pull ring the second relative post pivoted condition of pegging graft to appear, can ensure promptly that the extension spring is to the pulling force that the rotating sleeve applyed.

The utility model discloses an electric grinder convenient to pivot subassembly locking, wherein, be provided with at least one spacing arch on the outer wall of casing, be provided with the spacing groove with each spacing arch one-to-one on the lateral wall of support cover, each spacing arch all imbeds in the spacing groove on corresponding position, support cover and casing pass through spacing arch and spacing groove circumference spacing; after the structure is adopted, after the support sleeve and the shell are assembled, each limit bulge can be embedded into the limit groove on the corresponding position, and therefore the purpose of circumferential limit can be conveniently achieved between the support sleeve and the shell.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective sectional view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a partially exploded perspective view of the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 4;

FIG. 6 is a schematic view of the three-dimensional structure of the present invention with the rotating sleeve and the tension spring removed;

FIG. 7 is a first perspective view of the rotating sleeve;

fig. 8 is a second perspective view of the rotating sleeve.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-8, the electric grinder convenient for locking the rotating shaft assembly of the present invention comprises a housing 1, a motor 2, a rotating shaft assembly 3 and a grinding head 4, wherein the motor 2 is fixed inside the housing 1, the rear end of the rotating shaft assembly 3 is in transmission connection with the output shaft of the motor 2, and the front end of the rotating shaft assembly 3 extends out of the housing 1 and is in transmission connection with the grinding head 4; a bolt 5 vertical to the rotating shaft component 3 is movably arranged on the side wall of the shell 1 in a penetrating mode, a slot 31 for inserting the inner end part of the bolt 5 is formed in the side wall of the rotating shaft component 3, a spring 51 is sleeved on the bolt 5 positioned on the outer side of the shell 1, a snap spring 52 for preventing the bolt 5 from being separated from the shell 1 is clamped on the bolt 5 positioned on the inner side of the shell 1 in a matching mode, when the outer end part of the bolt 5 is pushed to enable the inner end part of the bolt 5 to be inserted into the slot 31, the bolt 5 is used for locking the rotating shaft component 3 to prevent the rotating shaft component 3 from rotating relative to the shell 1, and when the outer end part of the bolt 5 is released, the spring 51 is used for driving the bolt 5 to move outwards to reset so that the inner end part of the bolt 5 is separated from the slot 31; the electric grinder also comprises a support sleeve 6 and a rotating sleeve 7, wherein the support sleeve 6 is sleeved outside the shell 1 and is circumferentially limited on the shell 1, the rotating sleeve 7 is rotatably sleeved outside the support sleeve 6, a protruding part 71 is arranged on the inner wall of the rotating sleeve 7, an arc-shaped surface 72 extending along the circumferential direction of the rotating sleeve 7 is arranged on the inner wall of the protruding part 71, the arc-shaped surface 72 gradually shrinks inwards from one end to the other end, and the outer end part of the plug pin 5 is abutted against the arc-shaped surface 72; when the rotating sleeve 7 rotates towards one side relative to the supporting sleeve 6, the outer end part of the bolt 5 gradually slides from one end of the arc-shaped surface 72 to the other end of the arc-shaped surface 72 so that the arc-shaped surface 72 gradually pushes the bolt 5 inwards, and when the rotating sleeve 7 rotates towards the other side relative to the supporting sleeve 6, the outer end part of the bolt 5 gradually slides from the other end of the arc-shaped surface 72 to one end of the arc-shaped surface 72 so that the arc-shaped surface 72 gradually releases the bolt 5; a reset structure is arranged between the rotating sleeve 7 and the supporting sleeve 6, and when the rotating sleeve 7 is released, the reset structure is used for driving the rotating sleeve 7 to enable the rotating sleeve 7 to rotate and reset towards the other side relative to the supporting sleeve 6.

The reset structure comprises a tension spring 8, one end of the tension spring 8 is connected with the outer wall of the support sleeve 6, the other end of the tension spring 8 is connected with the inner wall of the rotating sleeve 7, and when the rotating sleeve 7 is released, the tension spring 8 is used for driving the rotating sleeve 7 to enable the rotating sleeve 7 to rotate towards the other side to be reset relative to the support sleeve 6; after adopting this kind of reset structure, when releasing the rotating sleeve, the extension spring can drive the rotating sleeve so that the rotating sleeve relatively supports the cover and rotate towards the opposite side and reset, and this reset structure has simple structure and advantage with low costs.

The outer wall of the support sleeve 6 is provided with a limit stop 61, and after the rotating sleeve 7 rotates towards the other side relative to the support sleeve 6 to reset, the limit stop 61 is used for abutting against the convex part 71 to limit the rotating sleeve 7 to rotate continuously; through limit stop's setting, after rotating the cover and supporting the cover relatively and rotate the reduction towards the opposite side, limit stop can support with the bulge and lean on in order to restrict to rotate the cover and continue to rotate to can avoid rotating the cover and appear by the excessive pivoted condition.

The tension spring 8 comprises an elastic part 81 positioned in the middle, and a first pull ring 82 and a second pull ring 83 which are respectively connected to two ends of the elastic part 81, the first pull ring 82 is connected with the support sleeve 6, and the second pull ring 83 is connected with the rotating sleeve 7; by adopting the structure, the tension spring can be reliably connected with the supporting sleeve and the rotating sleeve together after the first pull ring is connected with the supporting sleeve and the second pull ring is connected with the rotating sleeve.

The outer wall of the support sleeve 6 is provided with a first inserting column 62 and a first embedded groove 63, the first inserting column 62 is inserted with the first pull ring 82 in a matching manner, and the first embedded groove 63 is embedded with the tension spring 8 positioned between the first pull ring 82 and the elastic part 81; after adopting this kind of structure, first pull ring can be conveniently and reliably with support the cover and link together, and under the effect of first caulking groove, when the elastic component stretches out and draws back, can avoid first pull ring first grafting post pivoted condition relatively to appear, can ensure the tension force that the extension spring applyed to the rotating sleeve promptly.

A second inserting column 73 and a second embedded groove 74 are arranged on the inner wall of the rotating sleeve 7, the second inserting column 73 is inserted and connected with the second pull ring 83 in a matching mode, and the second embedded groove 74 is embedded with the tension spring 8 positioned between the second pull ring 83 and the elastic part 81; after adopting this kind of structure, the second pull ring can be conveniently and reliably be in the same place with rotating the cover and connecting, and under the effect of second caulking groove, when the elastic component stretches out and draws back, can avoid the second pull ring the second relative post pivoted condition of pegging graft to appear, can ensure promptly that the extension spring is to the pulling force that the rotating sleeve applyed.

The outer wall of the shell 1 is provided with at least one limiting bulge 11, the side wall of the support sleeve 6 is provided with a limiting groove 64 corresponding to each limiting bulge 11 one by one, each limiting bulge 11 is embedded into the limiting groove 64 at the corresponding position, and the support sleeve 6 and the shell 1 are circumferentially limited by the limiting bulges 11 and the limiting grooves 64; after the structure is adopted, after the support sleeve is assembled with the shell, each limit protrusion can be embedded into the limit groove on the corresponding position, and therefore the purpose of circumferential limit can be conveniently achieved between the support sleeve and the shell.

When the grinding head needs to be replaced, the rotating sleeve is rotated by fingers so that the rotating sleeve rotates towards one side relative to the supporting sleeve, at the moment, the outer end part of the bolt can gradually slide from one end of the arc-shaped surface to the other end of the arc-shaped surface, at the moment, the inner end part of the bolt can be inserted into the slot and locks the rotating shaft assembly, and the grinding head can be replaced after the rotating shaft assembly is locked; after the grinding head is replaced, and after the rotating sleeve is released by fingers, the reset structure can drive the rotating sleeve to enable the rotating sleeve to rotate towards the other side relative to the supporting sleeve to reset, at the moment, the outer end part of the bolt can gradually slide to one end of the arc-shaped surface from the other end of the arc-shaped surface, and at the moment, the inner end part of the bolt can be separated from the slot and lock the rotating shaft assembly.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An electric grinder convenient for locking a rotating shaft assembly comprises a shell (1), a motor (2), the rotating shaft assembly (3) and a grinding head (4), wherein the motor (2) is fixed inside the shell (1), the rear end of the rotating shaft assembly (3) is in transmission connection with an output shaft of the motor (2), and the front end of the rotating shaft assembly (3) extends out of the shell (1) and is in transmission connection with the grinding head (4); a bolt (5) perpendicular to the rotating shaft component (3) is movably arranged on the side wall of the shell (1) in a penetrating mode, a slot (31) used for inserting the inner end portion of the bolt (5) is formed in the side wall of the rotating shaft component (3), a spring (51) is sleeved on the bolt (5) located on the outer side of the shell (1), a snap spring (52) used for preventing the bolt (5) from being separated from the shell (1) is clamped on the bolt (5) located on the inner side of the shell (1) in a matching mode, when the outer end portion of the bolt (5) is pushed so that the inner end portion of the bolt (5) is inserted into the slot (31), the bolt (5) is used for locking the rotating shaft component (3) to prevent the rotating shaft component (3) from rotating relative to the shell (1), and when the outer end portion of the bolt (5) is released, the spring (51) is used for driving the bolt (5) to move outwards to reset so that the inner end portion of the bolt (5) is separated from the slot (31); the method is characterized in that: the electric grinder also comprises a support sleeve (6) and a rotating sleeve (7), wherein the support sleeve (6) is sleeved outside the shell (1) and is circumferentially limited on the shell (1), the rotating sleeve (7) is rotatably sleeved outside the support sleeve (6), a protruding part (71) is arranged on the inner wall of the rotating sleeve (7), an arc-shaped surface (72) extending along the circumferential direction of the rotating sleeve (7) is arranged on the inner wall of the protruding part (71), the arc-shaped surface (72) gradually shrinks inwards from one end to the other end, and the outer end part of the bolt (5) is abutted against the arc-shaped surface (72); when the rotating sleeve (7) rotates towards one side relative to the supporting sleeve (6), the outer end part of the bolt (5) gradually slides from one end of the arc-shaped surface (72) to the other end of the arc-shaped surface (72) so that the arc-shaped surface (72) gradually pushes the bolt (5) inwards, and when the rotating sleeve (7) rotates towards the other side relative to the supporting sleeve (6), the outer end part of the bolt (5) gradually slides from the other end of the arc-shaped surface (72) to one end of the arc-shaped surface (72) so that the arc-shaped surface (72) gradually releases the bolt (5); a reset structure is arranged between the rotating sleeve (7) and the supporting sleeve (6), and when the rotating sleeve (7) is released, the reset structure is used for driving the rotating sleeve (7) to enable the rotating sleeve (7) to rotate towards the other side relative to the supporting sleeve (6) for resetting.

2. The electric grinder convenient for locking of a rotating shaft assembly according to claim 1, wherein the reset structure comprises a tension spring (8), one end of the tension spring (8) is connected with the outer wall of the support sleeve (6), the other end of the tension spring (8) is connected with the inner wall of the rotating sleeve (7), and when the rotating sleeve (7) is released, the tension spring (8) is used for driving the rotating sleeve (7) to enable the rotating sleeve (7) to rotate and reset towards the other side relative to the support sleeve (6).

3. The electric grinder facilitating locking of the rotating shaft assembly according to claim 2, wherein a limit stop (61) is arranged on the outer wall of the support sleeve (6), and after the rotating sleeve (7) is rotated and reset towards the other side relative to the support sleeve (6), the limit stop (61) is used for abutting against the protruding portion (71) to limit the rotating sleeve (7) to rotate continuously.

4. The electric grinder facilitating locking of a rotating shaft assembly according to claim 2 or 3, wherein the tension spring (8) comprises an elastic part (81) in the middle and a first pull ring (82) and a second pull ring (83) respectively connected to two ends of the elastic part (81), the first pull ring (82) is connected with the support sleeve (6), and the second pull ring (83) is connected with the rotating sleeve (7).

5. The electric grinder facilitating locking of the rotating shaft assembly, according to claim 4, is characterized in that a first inserting column (62) and a first caulking groove (63) are arranged on the outer wall of the support sleeve (6), the first inserting column (62) is inserted into the first pull ring (82) in a matching mode, and the first caulking groove (63) is embedded into the tension spring (8) between the first pull ring (82) and the elastic part (81).

6. The electric grinder facilitating the locking of the rotating shaft assembly according to claim 4, wherein a second inserting column (73) and a second caulking groove (74) are arranged on the inner wall of the rotating sleeve (7), the second inserting column (73) is inserted in a matching manner with a second pull ring (83), and the second caulking groove (74) is embedded in a tension spring (8) between the second pull ring (83) and the elastic part (81).

7. The electric grinder facilitating locking of a rotating shaft assembly according to any one of claims 1 to 3, wherein at least one limiting protrusion (11) is arranged on the outer wall of the housing (1), limiting grooves (64) corresponding to the limiting protrusions (11) one by one are arranged on the side wall of the support sleeve (6), each limiting protrusion (11) is embedded in the limiting groove (64) in the corresponding position, and the support sleeve (6) and the housing (1) are circumferentially limited by the limiting protrusions (11) and the limiting grooves (64).