CN220428217U - Quick-change screwdriver head structure - Google Patents
Quick-change screwdriver head structure Download PDFInfo
- Publication number
- CN220428217U CN220428217U CN202321705170.0U CN202321705170U CN220428217U CN 220428217 U CN220428217 U CN 220428217U CN 202321705170 U CN202321705170 U CN 202321705170U CN 220428217 U CN220428217 U CN 220428217U
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- connecting column
- groove
- locking groove
- ring
- head
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- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Abstract
The utility model relates to a technical field of electric tool quick change batched head structure, especially relate to a quick change batched head structure, it includes the spliced pole that is connected with electric tool output shaft transmission, has offered the locking groove that supplies batched head to insert on the spliced pole, offer a plurality of joint grooves with locking groove intercommunication on the lateral wall of spliced pole, be provided with the joint ball that can stretch into in the locking groove in the joint groove, be provided with the elastic component that is used for pressing the joint ball towards in the locking groove on the spliced pole; the connecting column is provided with a fixable operation sleeve in a sliding sleeve manner, and the operation sleeve is provided with an avoidance groove for the elastic piece to stretch out and draw back. The application has when changing and criticizing the head only need the one hand with criticizing in the head inserts the spliced pole, need not to keep the unblock state to reach the effect of being convenient for personnel's operation.
Description
Technical Field
The application relates to the technical field of quick-change batch head structures of electric tools, in particular to a quick-change batch head structure.
Background
The head replacing mechanism is a head replacing mechanism commonly used for the electric tool at present, and has the main effect of meeting the requirement of the electric tool for replacing heads of different sizes and models to meet the requirement of processing and use.
The existing batch head replacing mechanism mainly comprises a connecting column connected with an output shaft of a motor, a hexagonal inserting groove for inserting a batch head and a locking piece for locking the batch head are formed in the connecting column. The locking piece is generally in a three-jaw chuck type and is screwed; when the batch head is replaced, the batch head is required to be unlocked firstly, the batch head can be inserted after the unlocking state is maintained, and then the unlocking state is released to lock the batch head. When the screwdriver head with the structure is inserted, a worker needs to operate both hands simultaneously to insert the screwdriver head, so that the defect that the screwdriver head is inconvenient to replace is caused, and a quick-change screwdriver head is developed by my department.
Disclosure of Invention
In order to solve the technical problem, the application provides a quick-change batch head structure which has the advantages that when the batch head is replaced, the batch head is only needed to be inserted into the connecting column by one hand, and the unlocking state is not needed to be kept, so that the operation of personnel is convenient.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the quick-change screwdriver head structure comprises a connecting column in transmission connection with an output shaft of an electric tool, wherein a locking groove for inserting a screwdriver head is formed in the connecting column, a plurality of clamping grooves communicated with the locking groove are formed in the side wall of the connecting column, clamping balls capable of extending into the locking groove are arranged in the clamping grooves, and an elastic piece for pressing the clamping balls into the locking groove is arranged on the connecting column;
the connecting column is provided with a fixable operation sleeve in a sliding sleeve manner, and the operation sleeve is provided with an avoidance groove for the elastic piece to stretch out and draw back.
According to the technical scheme, when an operator holds the batch head and inserts the batch head into the locking groove, the batch head end extrudes the clamping ball, so that the clamping ball withdraws from the locking groove to retract into the clamping groove after being extruded, the elastic piece can be extruded in the retracting process, the elastic piece is retracted into the avoidance groove, and the batch head is further inserted into the locking groove without being limited by the clamping ball; when the batch head is inserted into the clamping groove corresponding to the clamping ball, the clamping ball is pressed towards the batch head under the action of the pressing piece, so that the batch head is abutted and positioned by the clamping ball; however, when the screwdriver head is required to be pulled out, the screwdriver head moves forward to drive the clamping ball to move forward, so that the clamping ball is separated from the pressing piece, at the moment, the clamping ball cannot move due to the limitation of the operation sleeve on the outer side in the circumferential direction, and further, the clamping ball cannot retract from the locking groove, so that the effect of preventing the screwdriver head from falling off is achieved, the screwdriver head is inserted into the connecting column by one hand, the unlocking state is not required, and the operation of personnel is facilitated; when the unlocking is needed, the operation sleeve is only required to slide to the position where the avoidance groove is dislocated with the elastic piece, and the clamping ball can enter the avoidance groove without obstruction.
As a preferable scheme of this application, the elastic component sets up to overlap the elastic expansion ring of establishing on the spliced pole, the expansion joint has been seted up on the elastic expansion ring.
Realize above-mentioned technical scheme, it can deform promptly after the elasticity expansion ring receives the joint ball extrusion, and the expansion joint grow enters into dodge in the groove to form and dodge the effect, when the joint ball is not blocked by the batch head, elasticity expansion ring is retracted, thereby extrudees the joint ball, in order to realize compressing tightly the effect of joint ball.
As a preferable scheme of this application, be provided with the holding ring platform on the spliced pole, be provided with the location lug on the elastic expansion ring, be provided with the constant head tank that supplies the location lug to inlay on the holding ring platform.
The technical scheme is realized, the elastic telescopic ring is prevented from moving axially along the connecting column, the position is deviated, and the clamping ball cannot normally extrude the elastic telescopic ring to move.
As a preferable scheme of the application, be provided with the butt platform on the operation cover inner wall, be provided with on the spliced pole and be used for compressing tightly the butt bench and compress tightly the piece of butt on the holding ring bench.
By means of the technical scheme, through the arrangement of the pressing piece, unlocking caused by misoperation of the operation sleeve is prevented.
As a preferred scheme of this application, compress tightly the piece and include the opening gasket, set up on the spliced pole and supply the embedded groove of opening gasket embedding, opening gasket is close to butt platform one side and is provided with butt ring (63), be provided with between butt ring and the butt platform and be used for pressing the reset spring of butt platform towards the holding ring platform.
The technical scheme is realized, namely the abutting table is pressed on the positioning ring table under the action of the reset spring, so that the operation sleeve is prevented from sliding randomly, the condition of unlocking the batch head is caused, and after the operation sleeve is unlocked, the reset spring can automatically rebound to drive the operation sleeve to rebound and lock.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when an operator holds the screwdriver head and inserts the screwdriver head into the locking groove, the end of the screwdriver head extrudes the clamping ball, so that the clamping ball withdraws from the locking groove to retract into the clamping groove after being extruded, the elastic piece is extruded in the retracting process, the elastic piece is retracted into the avoiding groove, and the screwdriver head is further inserted into the locking groove without being limited by the clamping ball; when the batch head is inserted into the clamping groove corresponding to the clamping ball, the clamping ball is pressed towards the batch head under the action of the pressing piece, so that the batch head is abutted and positioned by the clamping ball; however, when the screwdriver head is required to be pulled out, the screwdriver head moves forward to drive the clamping ball to move forward, so that the clamping ball is separated from the pressing piece, at the moment, the clamping ball cannot move due to the limitation of the operation sleeve on the outer side in the circumferential direction, and further, the clamping ball cannot retract from the locking groove, so that the effect of preventing the screwdriver head from falling off is achieved, the screwdriver head is inserted into the connecting column by one hand, the unlocking state is not required, and the operation of personnel is facilitated; when the unlocking is needed, the operation sleeve is only required to slide to the position where the avoidance groove is dislocated with the elastic piece, and the clamping ball can enter the avoidance groove without obstruction.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a cross-sectional view of an embodiment of the present application.
FIG. 3 is a schematic illustration of a batch head insertion process in an embodiment of the present application.
Fig. 4 is a schematic structural view of a connecting column portion in the embodiment of the present application.
Fig. 5 is a schematic structural view of an elastic member in an embodiment of the present application.
Reference numerals: 1. a connecting column; 11. a locking groove; 12. a clamping groove; 13. positioning a ring table; 2. a clamping ball; 3. an elastic member; 31. an elastic expansion ring; 32. an expansion joint; 33. positioning the picture; 4. an operating sleeve; 41. an abutment; 5. a pressing member; 51. an opening gasket; 52. an abutment ring; 53. a return spring; 6. and (5) head-cutting.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a quick-change batch head structure. Referring to fig. 1, the quick-change screwdriver bit 6 includes a connection post 1 in driving connection with an output shaft of a power tool, so that the connection post 1 can rotate along with the output shaft of the power tool. The connecting column 1 is provided with a locking groove 11 for inserting the batch head 6, and the cross section outline of the locking groove 11 is the same as that of the batch head 6 and is generally polygonal, so that the batch head 6 can rotate along with the connecting column 1 after the batch head 6 is inserted into the locking groove 11. The side wall of the connecting column 1 is provided with a plurality of clamping grooves 12 communicated with the locking grooves 11, and at least one pair of clamping grooves are generally symmetrically arranged so as to ensure the uniformity of limiting stress on the batch head 6. The clamping ball 2 which can extend into the locking groove 11 is arranged in the clamping groove 12, the elastic piece 3 which is used for pressing the clamping ball 2 into the locking groove 11 is arranged on the connecting column 1, the fixable operating sleeve 4 is sleeved on the connecting column 1 in a sliding manner, and the avoidance groove for the elastic piece 3 to stretch is arranged on the operating sleeve 4. That is, when the operator holds the batch head 6 and inserts into the locking groove 11, the end part of the batch head 6 extrudes the clamping ball 2, so that the clamping ball 2 withdraws from the locking groove 11 to retract into the clamping groove 12 after being extruded, the elastic piece 3 can be extruded in the retraction process, the elastic piece 3 can retract into the avoidance groove, and the batch head 6 is further not limited by the clamping ball 2 to be inserted into the locking groove 11. When the batch head 6 is inserted into the clamping groove corresponding to the clamping ball 2, the clamping ball 2 is pressed towards the batch head 6 under the action of the pressing piece 5, so that the batch head 6 is abutted and positioned by the clamping ball 2. But when the batch head 6 is to be pulled out, the batch head 6 moves forward and drives the clamping ball 2 to move forward, so that the clamping ball 2 is separated from the compressing piece 5, the circumferential outer side of the clamping ball 2 is limited by the operation sleeve 4 and cannot move, the clamping ball 2 cannot retract from the locking groove 11, and the effect of preventing the batch head 6 from falling is achieved. When the unlocking is needed, the operation sleeve 4 is only required to slide to the position where the avoidance groove is dislocated with the elastic piece 3, and the clamping ball 2 can enter the avoidance groove without obstruction.
The elastic piece 3 is set to be sleeved with the elastic telescopic ring 31 on the connecting column 1, the elastic telescopic ring 31 is made of metal ring sheets, the elastic telescopic ring is provided with the expansion joint 32, namely, when the elastic telescopic ring 31 is extruded by the clamping ball 2, the elastic telescopic ring can deform, the expansion joint 32 is enlarged, and the elastic telescopic ring enters into the avoidance groove, so that the avoidance effect is formed, when the clamping ball 2 is not blocked by the batch head 6, the elastic telescopic ring 31 is retracted, and the clamping ball 2 is extruded, so that the effect of compacting the clamping ball 2 is realized. But in order to prevent the elastic expansion ring 31 from moving axially along the connecting column 1, the position is deviated, the clamping ball 2 cannot normally press the elastic expansion ring 31 to move, and the connecting column 1 is provided with a positioning ring table 13 for the elastic expansion ring 31 to abut against, so that the axial movement of the elastic expansion ring 31 is limited and positioned. Meanwhile, in order to prevent the elastic expansion ring 31 from rotating circumferentially, when the clamping ball 2 is opposite to the expansion joint 32, the clamping ball 2 enters the expansion joint 32, so that the elastic expansion ring 31 cannot be reset, a positioning lug is arranged on the elastic expansion ring 31, a positioning groove for embedding the positioning lug is formed in the positioning ring table 13, namely, the positioning lug is clamped in the positioning groove through the positioning lug, and the elastic expansion ring 31 is prevented from rotating.
In order to prevent the operation sleeve 4 from sliding on the connection post 1 at will, an abutment table 41 is provided on the inner wall of the operation sleeve 4, and a pressing member 5 for pressing the abutment table 41 against the positioning ring table 13 is provided on the connection post 1. The compressing piece 5 comprises an opening gasket 51, an embedding groove for embedding the opening gasket 51 is formed in the connecting column 1, an abutting ring 52 is arranged on one side, close to the abutting table 41, of the opening gasket 51, a reset spring 53 for pressing the abutting table 41 to the positioning ring table 13 is arranged between the abutting ring 52 and the abutting table 41, namely, the abutting table 41 is compressed on the positioning ring table 13 under the action of the reset spring 53, so that the operation sleeve 4 is prevented from sliding randomly, the unlocking condition of the batch head 6 is caused, and after the operation sleeve 4 is unlocked, the reset spring 53 can automatically rebound to drive the operation sleeve 4 to rebound and lock.
The implementation principle of the quick-change batch head structure in the embodiment of the application is as follows: 1. when an operator holds the batch head 6 and inserts the batch head 6 into the locking groove 11, the end part of the batch head 6 extrudes the clamping ball 2, so that the clamping ball 2 withdraws from the locking groove 11 to retract into the clamping groove 12 after being extruded, the elastic piece 3 can be extruded in the retraction process, the elastic piece 3 is retracted into the avoidance groove, and the batch head 6 is further inserted into the locking groove 11 without being limited by the clamping ball 2; when the batch head 6 is inserted into the clamping groove corresponding to the clamping ball 2, the clamping ball 2 is pressed towards the batch head 6 under the action of the pressing piece 5, so that the batch head 6 is abutted and positioned by the clamping ball 2; however, when the batch head 6 is to be pulled out, the batch head 6 moves forward to drive the clamping ball 2 to move forward, so that the clamping ball 2 is separated from the compressing piece 5, at the moment, the clamping ball 2 cannot move when being limited by the operation sleeve 4 in the circumferential direction outside, so that the clamping ball 2 cannot retract from the locking groove 11, the effect of preventing the batch head 6 from falling off is achieved, the batch head 6 is inserted into the connecting column 1 by one hand, the unlocking state is not required to be kept, and the operation of personnel is facilitated; when the unlocking is needed, the operation sleeve 4 is only required to slide to the position where the avoidance groove is dislocated with the elastic piece 3, and the clamping ball 2 can enter the avoidance groove without obstruction.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (5)
1. The utility model provides a quick change batched head structure which characterized in that: the automatic clamping device comprises a connecting column (1) in transmission connection with an output shaft of an electric tool, wherein a locking groove (11) for inserting a screwdriver head (6) is formed in the connecting column (1), a plurality of clamping grooves (12) communicated with the locking groove (11) are formed in the side wall of the connecting column (1), clamping balls (2) capable of extending into the locking groove (11) are arranged in the clamping grooves (12), and elastic pieces (3) for pressing the clamping balls (2) into the locking groove (11) are arranged on the connecting column (1);
the connecting column (1) is sleeved with a fixable operation sleeve (4) in a sliding mode, and an avoidance groove for the elastic piece (3) to stretch out and draw back is formed in the operation sleeve (4).
2. A quick change head structure as defined in claim 1, wherein: the elastic piece (3) is an elastic telescopic ring (31) sleeved on the connecting column (1), and an expansion joint (32) is formed in the elastic telescopic ring.
3. A quick change head structure as claimed in claim 2, wherein: the connecting column (1) is provided with a positioning ring table (13), the elastic telescopic ring (31) is provided with a positioning lug, and the positioning ring table (13) is provided with a positioning groove for embedding the positioning lug.
4. A quick change head structure according to claim 3, wherein: an abutting table (41) is arranged on the inner wall of the operation sleeve (4), and a pressing piece (5) for pressing and abutting the abutting table (41) on the positioning ring table (13) is arranged on the connecting column (1).
5. The quick change head structure of claim 4, wherein: the compressing piece (5) comprises an opening gasket (51), an embedding groove for embedding the opening gasket (51) is formed in the connecting column (1), an abutting ring (52) is arranged on one side, close to the abutting table (41), of the opening gasket (51), and a reset spring (53) for pressing the abutting table (41) to the positioning ring table (13) is arranged between the abutting ring (52) and the abutting table (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705170.0U CN220428217U (en) | 2023-06-30 | 2023-06-30 | Quick-change screwdriver head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321705170.0U CN220428217U (en) | 2023-06-30 | 2023-06-30 | Quick-change screwdriver head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220428217U true CN220428217U (en) | 2024-02-02 |
Family
ID=89700507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321705170.0U Active CN220428217U (en) | 2023-06-30 | 2023-06-30 | Quick-change screwdriver head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220428217U (en) |
-
2023
- 2023-06-30 CN CN202321705170.0U patent/CN220428217U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |