CN110815109A - Multi-joint universal tool - Google Patents
Multi-joint universal tool Download PDFInfo
- Publication number
- CN110815109A CN110815109A CN201810889107.4A CN201810889107A CN110815109A CN 110815109 A CN110815109 A CN 110815109A CN 201810889107 A CN201810889107 A CN 201810889107A CN 110815109 A CN110815109 A CN 110815109A
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- China
- Prior art keywords
- ball head
- receiving groove
- groove
- piece
- universal tool
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0014—Screwdriver- or wrench-heads provided with cardan joints or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
Abstract
The invention relates to a multi-joint universal tool, which comprises a connecting piece, a working piece and two elastic pieces. The assembling piece is provided with an assembling part and a first containing groove, and a first concave part is arranged on the inner wall of the first containing groove. The connecting piece comprises a second ball head and a second accommodating groove, the second ball head is provided with a second elastic abutting piece which normally abuts against the first ball head radially outwards, the inner wall of the second accommodating groove is provided with a second concave part, and the second ball head is inserted into the first accommodating groove and can slide at a first position and a second position relative to the first accommodating groove. The working piece comprises a third ball head and a working part, the third ball head is provided with a third elastic abutting piece which normally abuts against the second ball head radially outwards, and the third ball head is inserted into the second accommodating groove and can slide at a first position and a second position relative to the second accommodating groove. One of the two elastic pieces is elastically propped between the first containing groove and the second ball head, and the other one is elastically propped between the second containing groove and the third ball head.
Description
Technical Field
The invention relates to a multi-section universal tool.
Background
The universal joint is a hand tool capable of rotating in multiple angles, and is generally used for a switching tool between a connecting rotating tool (such as a wrench, a pneumatic or electric tool, etc.) and a locking element (such as a sleeve or a screw lock, etc.), the existing universal joint comprises a ball head seat and a driving rod, one end of the driving rod is provided with a ball head, the ball head is arranged on the ball head seat in a non-rotatable and sliding way, the driving rod can be arranged on a fixed position and a swinging position in a sliding way relative to the ball head seat, when the driving rod is arranged on the fixed position, the radial convex part of the driving rod is blocked with the ball head seat and can not swing relatively, when the driving rod is pulled outwards to a swinging position relative to the ball head seat, the radial convex part of the driving rod can swing relative to the ball head seat without being clamped with the ball head seat, and the universal joint can rotate at multiple angles so as to be convenient to operate in a narrow operation environment. However, when the working environment is too curved and long (such as a long and narrow curved hole), it is impossible to connect with the locking device by only rotating the tool and extending the universal joint, which makes the working process very difficult.
Therefore, there is a need for a new and improved multi-joint universal tool to solve the above problems.
Disclosure of Invention
The present invention provides a multi-joint universal tool which can effectively extend into a curved and long environment to be smoothly assembled with a locking element.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a multi-section universal tool, which comprises a connecting piece, a working piece and two elastic pieces. The assembling piece is provided with an assembling part and a polygonal first accommodating groove, and a first concave part is arranged on the inner wall of the first accommodating groove. The connecting piece comprises a polygonal second ball head and a second accommodating groove, the second ball head is provided with a second elastic supporting piece which is normally radially supported outwards, the inner wall of the second accommodating groove is provided with a second concave part, and the second ball head is inserted into the first accommodating groove and can slide at a first position and a second position relative to the first accommodating groove. The working piece comprises a polygonal third ball head and a working part, the third ball head is provided with a third elastic supporting piece which is normally and radially supported outwards, and the third ball head is inserted in the second accommodating groove and can slide at a first position and a second position relative to the second accommodating groove. One of the two elastic pieces is elastically propped between the first containing groove and the second ball head, and the other elastic piece is elastically propped between the second containing groove and the third ball head so as to normally prop the second ball head and the third ball head towards the second position. When the second ball head is positioned at the first position, the second elastic abutting piece elastically abuts against the first concave part and the connecting piece cannot swing relative to the assembling piece by taking the second ball head as an axis; when an external force is applied to move the second ball head towards the second position, the second elastic abutting piece is separated from the first concave part, the second ball head is abutted by the elastic piece to move to the second position, and the connecting piece swings relative to the sleeve member by taking the second ball head as an axis; when the third ball head is located at the first position, the third elastic abutting piece elastically abuts against the second concave part and the working piece cannot swing relative to the connecting component by taking the third ball head as an axis; when an external force is applied to move the third ball head towards the second position, the third elastic abutting piece is separated from the second concave part, the third ball head is abutted by the elastic piece to move to the second position, and the working piece swings relative to the connecting piece by taking the third ball head as an axis.
The first concave part is a first annular groove annularly arranged on the inner wall of the first accommodating groove, and the second concave part is a second annular groove annularly arranged on the inner wall of the second accommodating groove.
The inner walls of the first accommodating groove and the second accommodating groove are respectively provided with a plurality of clamping protrusions extending axially, the second ball head and the third ball head are respectively provided with a plurality of cambered surface sections, the cambered surface sections of the second ball head respectively support against one clamping protrusion of the first accommodating groove, and the cambered surface sections of the third ball head respectively support against one clamping protrusion of the second accommodating groove.
The first accommodating groove and the second accommodating groove are respectively provided with a plurality of axially extending clamping recesses, the clamping protrusions and the clamping recesses are arranged in a staggered manner along the circumferential direction of the first accommodating groove or the second accommodating groove, the first annular groove and the second annular groove extend to the clamping protrusions and the clamping recesses, a corner is formed between any two adjacent cambered surface sections of the second ball head and the third ball head, and each corner supports against one clamping recess.
The assembling piece further comprises an extension rod, and two ends of the extension rod are respectively connected between the assembling portion and the first accommodating groove.
When the connecting piece is located at the first position, the end face of the second accommodating groove is axially abutted against the end face of the first accommodating groove, and when the connecting piece is located at the second position, the end face of the second accommodating groove is not axially abutted against the end face of the first accommodating groove.
The workpiece is further integrally provided with a radial flange, the radial flange is positioned between the working part and the third ball head, when the workpiece is positioned at the first position, the radial flange abuts against the inner wall of the second accommodating groove, and when the workpiece is positioned at the second position, the radial flange does not abut against the inner wall of the second accommodating groove.
The first accommodating groove and the second accommodating groove are provided with a detachable limiting part on the inner wall, when the second ball head or the third ball head moves to the second position, the blocking part of the first accommodating groove or the second accommodating groove is clamped against the second ball head or the third ball head, so that the second ball head or the third ball head cannot be separated.
The two elastic pieces are gradually reduced from the assembling piece to the direction of the workpiece and respectively abut against the end faces of the second ball head and the third ball head facing the assembling piece.
The first accommodating groove and the second accommodating groove are hexagonal slotted holes, the second ball head and the third ball head are hexagonal ball heads, the working part is a quadrangular head, and the assembling part is a polygonal slotted hole.
The invention has the beneficial effects that: the multi-section universal tool can effectively extend into a bending long and narrow environment to be smoothly assembled with a locking element, and the second ball head and the third ball head can be quickly positioned at the first position or the second position without sliding relative to each other through the structural matching of the first concave part, the second concave part and the two elastic parts.
Drawings
Fig. 1 is a perspective view of a preferred embodiment of the present invention.
Fig. 2 is an exploded view of a preferred embodiment of the present invention.
FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention.
FIG. 4 is an operational cross-sectional view of a preferred embodiment of the present invention.
Fig. 5 is a perspective view of another preferred embodiment of the present invention.
FIG. 6 is an operational cross-sectional view of another preferred embodiment of the present invention.
Reference numerals: 1. 1A: assembling parts; 2: a connecting member; 3: a workpiece; 11. 11A: a connecting part; 12. 12A: a first accommodating groove; 13: a first recess; 14: an extension rod; 131: a first ring groove; 21: a second ball head; 22: a second accommodating groove; 23: a second urging member; 24: a second recess; 25: a step portion; 241: a second ring groove; 31: a third ball head; 32: a working part; 33: a third urging member; 34: a radial flange; 41: an elastic member; 42: a limiting member; 51: clamping convex; 52: a cambered surface section; 53: clamping a concave part; 54: a corner portion.
Detailed Description
The following description is given by way of example only, and is not intended to limit the scope of the invention.
Referring to fig. 1 to 4, which show a preferred embodiment of the present invention, the multi-joint universal tool of the present invention comprises a coupling member 1, a coupling member 2, a working member 3 and two elastic members 41.
The assembling member 1 has an assembling portion 11 and a polygonal first receiving groove 12, and a first concave portion 13 is disposed on an inner wall of the first receiving groove 12.
The connecting member 2 includes a polygonal second ball 21 and a second receiving groove 22, the second ball 21 has a second elastic member 23 that normally abuts against the second ball radially outward, the inner wall of the second receiving groove 22 has a second concave portion 24, and the second ball 21 is inserted into the first receiving groove 12 and can slide in a first position and a second position relative to the first receiving groove 12.
The working member 3 includes a polygonal third ball head 31 and a working portion 32, the third ball head 31 is provided with a third elastic member 33 which normally radially abuts outwards, and the third ball head 31 is inserted into the second receiving groove 22 and can slide in a first position and a second position relative to the second receiving groove 22. In the present embodiment, the working portion 32 is provided for assembling with a locking member or a tool sleeve, and the assembling portion 11 is provided for assembling with a rotating tool. In the embodiment, the first receiving groove 12 and the second receiving groove 22 are hexagonal slots, the second ball head 21 and the third ball head 31 are hexagonal ball heads, the working portion 32 is a quadrangular head, and the assembling portion 11 is a polygonal slot corresponding to the rotating tool.
One of the two elastic members 41 is elastically abutted between the first receiving groove 12 and the second ball head 21, and the other one is elastically abutted between the second receiving groove 22 and the third ball head 31, so as to normally abut the second ball head 21 and the third ball head 31 against the second position, in this embodiment, the two elastic members 41 are gradually reduced from the assembling member 1 toward the working member 3, and respectively abut against the end surfaces of the second ball head 21 and the third ball head 31 toward the assembling member 1.
When the second ball head 21 is located at the first position, the second elastic member 23 elastically abuts against the first concave portion 13 and the connecting member 2 cannot swing relative to the assembling member 1 with the second ball head 21 as an axis; when an external force is applied to move the second ball 21 toward the second position, the second elastic member 23 is disengaged from the first recess 13, the second ball 21 is elastically pushed by the elastic member 41 to move to the second position, and the connecting member 2 swings relative to the kit with the second ball 21 as an axis. When the third ball head 31 is located at the first position, the third elastic member 33 elastically abuts against the second recess 24 and the working member 3 cannot swing relative to the connecting assembly with the third ball head 31 as an axis; when an external force is applied to move the third ball head 31 toward the second position, the third elastic member 33 is disengaged from the second recess 24, the third ball head 31 is elastically pressed by the elastic member 41 to move to the second position, the workpiece 3 swings relative to the connecting member 2 with the third ball head 31 as a shaft, and the second elastic member 41 can prevent the second ball head 21 and the third ball head 31 from moving to the first position at will, so that the multi-angle rotation function cannot be achieved. Therefore, by moving the second ball head 21 and the third ball head 31 to the second position, the multi-joint universal tool can be extended and rotated at multiple angles to lock in a narrow and long working environment. It is noted that in other embodiments of the invention, more than two mating connectors 2 may be included, and the bending length of the invention may be increased to provide for extension into lower working environments of different bending lengths.
Specifically, the first concave portion 13 is a first annular groove 131 annularly disposed on the inner wall of the first accommodating groove 12, the second concave portion 24 is a second annular groove 241 annularly disposed on the inner wall of the second accommodating groove 22, and in other embodiments, the first concave portion 13 and the second concave portion 24 may also be through holes, and may also accommodate the second abutting member 23 and the third abutting member 33.
Further, a plurality of axially extending locking protrusions 51 are respectively disposed on the inner walls of the first accommodating groove 12 and the second accommodating groove 22, a plurality of arc surface sections 52 are respectively disposed on the second ball head 21 and the third ball head 31, the arc surface sections 52 of the second ball head 21 respectively abut against the locking protrusions 51 of the first accommodating groove 12, and the arc surface sections 52 of the third ball head 31 respectively abut against the locking protrusions 51 of the second accommodating groove 22. In the embodiment, the first receiving groove 12 and the second receiving groove 22 are respectively further provided with a plurality of axially extending locking recesses 53, the locking protrusions 51 and the locking recesses 53 are arranged in a staggered manner along the circumferential direction of the first receiving groove 12 or the second receiving groove 22, the first annular groove 131 and the second annular groove 241 extend to the locking protrusions 51 and the locking recesses 53, a corner 54 is formed between any adjacent two arc surface sections 52 of the second ball head 21 and the third ball head 31, and each corner 54 abuts against one locking recess 53 to prevent the second ball head 21 and the third ball head 31 from rotating relative to the first receiving groove 12 and the second receiving groove 22.
When the connecting member 2 is located at the first position, the end surface of the second receiving groove 22 axially abuts against the end surface of the first receiving groove 12, and when the connecting member 2 is located at the second position, the end surface of the second receiving groove 22 does not axially abut against the end surface of the first receiving groove 12, so as to prevent the connecting member 2 from swinging relative to the assembling member 1.
The working member 3 is further integrally provided with a radial flange 34, the radial flange 34 is located between the working portion 32 and the third ball head 31, when the working member 3 is located at the first position, the radial flange 34 abuts against the inner wall of the second accommodating groove 22 to prevent the working member 3 from swinging relative to the connecting member 2, and when the working member 3 is located at the second position, the radial flange 34 does not abut against the inner wall of the second accommodating groove 22. Preferably, the connecting member 2 is further provided with a step portion 25, when the connecting member 2 is located at the first position, the step portion 25 abuts against the inner wall of the first accommodating groove 12, and the connecting member 2 can be prevented from swinging relative to the assembly member 1.
Preferably, a detachable limiting member 42 is further disposed on the inner walls of the first receiving groove 12 and the second receiving groove 22, and when the second ball head 21 or the third ball head 31 moves to the second position, the blocking member of the first receiving groove 12 or the second receiving groove 22 is clamped against the second ball head 21 or the third ball head 31, so that the second ball head 21 or the third ball head 31 cannot be separated.
Referring to fig. 5 and 6, compared to the above embodiment, in another embodiment of the present invention, the assembly member 1A further includes an extension rod 14, two ends of the extension rod 14 are respectively connected between the assembly portion 11A and the first receiving groove 12A for extending the working length of the multi-section universal tool, and the remaining structure is the same as the above embodiment, so that no additional description is provided.
In summary, the multi-joint universal tool of the present invention can effectively extend into a curved and long environment to be smoothly assembled with a locking element, and the second ball head and the third ball head can be quickly positioned at the first position or the second position without any relative sliding through the structural cooperation of the first concave portion, the second concave portion and the two elastic members.
Claims (10)
1. A multi-joint universal tool, comprising:
the assembling piece is provided with an assembling part and a polygonal first accommodating groove, and a first concave part is arranged on the inner wall of the first accommodating groove;
a connecting piece, including a polygonal second ball head and a second containing groove, the second ball head is provided with a second elastic supporting piece which is normally radially supported outwards, the inner wall of the second containing groove is provided with a second concave part, and the second ball head is inserted in the first containing groove and can slide at a first position and a second position relative to the first containing groove;
the third ball head is provided with a third elastic abutting piece which normally abuts outwards in the radial direction, is inserted in the second accommodating groove and can slide at a first position and a second position relative to the second accommodating groove;
two elastic pieces, one of which is elastically propped between the first containing groove and the second ball head, and the other of which is elastically propped between the second containing groove and the third ball head, so as to normally prop the second ball head and the third ball head towards the second position;
when the second ball head is positioned at the first position, the second elastic abutting piece elastically abuts against the first concave part and the connecting piece cannot swing relative to the assembling piece by taking the second ball head as an axis; when an external force is applied to move the second ball head towards the second position, the second elastic abutting piece is separated from the first concave part, the second ball head is abutted by the elastic piece to move to the second position, and the connecting piece swings relative to the sleeve piece by taking the second ball head as an axis;
when the third ball head is located at the first position, the third elastic abutting piece elastically abuts against the second concave part and the working piece cannot swing relative to the connecting component by taking the third ball head as an axis; when an external force is applied to move the third ball head towards the second position, the third elastic abutting piece is separated from the second concave part, the third ball head is abutted by the elastic piece to move to the second position, and the working piece swings relative to the connecting piece by taking the third ball head as an axis.
2. The multi-joint universal tool according to claim 1, wherein the first recess is a first annular groove formed around the inner wall of the first receiving groove, and the second recess is a second annular groove formed around the inner wall of the second receiving groove.
3. The multi-joint universal tool according to claim 2, wherein the first receiving groove and the second receiving groove are respectively provided with a plurality of axially extending protrusions, the second ball head and the third ball head are respectively provided with a plurality of arc sections, the arc sections of the second ball head respectively abut against one of the protrusions of the first receiving groove, and the arc sections of the third ball head respectively abut against one of the protrusions of the second receiving groove.
4. The multi-joint universal tool according to claim 3, wherein the first receiving groove and the second receiving groove are respectively further provided with a plurality of axially extending locking recesses, the locking protrusions and the locking recesses are circumferentially staggered along the first receiving groove or the second receiving groove, the first annular groove and the second annular groove extend along the locking protrusions and the locking recesses, and a corner portion is formed between any adjacent two arc surface sections of the second ball head and the third ball head, and each corner portion abuts against one locking recess.
5. The multi-joint universal tool according to claim 1, wherein the assembly member further comprises an extension rod, and two ends of the extension rod are connected between the assembly portion and the first receiving groove, respectively.
6. The multi-joint universal tool according to claim 1, wherein when the connecting member is located at the first position, the end surface of the second receiving groove axially abuts against the end surface of the first receiving groove, and when the connecting member is located at the second position, the end surface of the second receiving groove does not axially abut against the end surface of the first receiving groove.
7. The multi-joint universal tool according to claim 1, wherein the working member is further integrally provided with a radial flange located between the working portion and the third ball, the radial flange abutting against the inner wall of the second receiving groove when the working member is in the first position, and the radial flange not abutting against the inner wall of the second receiving groove when the working member is in the second position.
8. The multi-joint universal tool according to claim 1, wherein a detachable stopper is further disposed on the inner walls of the first receiving groove and the second receiving groove, and when the second ball head or the third ball head moves to the second position, the stopper of the first receiving groove or the second receiving groove is engaged with the second ball head or the third ball head, so that the second ball head or the third ball head cannot be separated.
9. The multi-joint universal tool according to any one of claims 1 to 8, wherein the two resilient members are tapered from the joint member toward the working member and abut against end surfaces of the second ball head and the third ball head, respectively, toward the joint member.
10. A multi-joint universal tool according to any of claims 1 to 8, wherein the first receiving groove and the second receiving groove are hexagonal slots, the second ball head and the third ball head are hexagonal ball heads, the working portion is a quadrangular head, and the coupling portion is a polygonal slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889107.4A CN110815109B (en) | 2018-08-07 | 2018-08-07 | Multi-joint universal tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889107.4A CN110815109B (en) | 2018-08-07 | 2018-08-07 | Multi-joint universal tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110815109A true CN110815109A (en) | 2020-02-21 |
| CN110815109B CN110815109B (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810889107.4A Active CN110815109B (en) | 2018-08-07 | 2018-08-07 | Multi-joint universal tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110815109B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738608B (en) * | 2021-01-15 | 2021-09-01 | 原利興工業有限公司 | Tool extension |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826062Y (en) * | 2005-10-11 | 2006-10-11 | 赵于婷 | Universal joint structure |
| CN202572346U (en) * | 2012-05-14 | 2012-12-05 | 陈佳益 | Two-section type tool joint |
| CN203185221U (en) * | 2013-02-19 | 2013-09-11 | 陈龙兴 | Multi-section screwdriver with long service life |
| US20160265596A1 (en) * | 2015-03-12 | 2016-09-15 | Re-Dai Precision Tools Co., Ltd. | Ball type universal joint |
| CN207415233U (en) * | 2017-11-21 | 2018-05-29 | 陈丽珍 | A kind of more piece screwdriver |
| CN207606740U (en) * | 2017-12-12 | 2018-07-13 | 孙玮 | A kind of screwdriver |
-
2018
- 2018-08-07 CN CN201810889107.4A patent/CN110815109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826062Y (en) * | 2005-10-11 | 2006-10-11 | 赵于婷 | Universal joint structure |
| CN202572346U (en) * | 2012-05-14 | 2012-12-05 | 陈佳益 | Two-section type tool joint |
| CN203185221U (en) * | 2013-02-19 | 2013-09-11 | 陈龙兴 | Multi-section screwdriver with long service life |
| US20160265596A1 (en) * | 2015-03-12 | 2016-09-15 | Re-Dai Precision Tools Co., Ltd. | Ball type universal joint |
| CN207415233U (en) * | 2017-11-21 | 2018-05-29 | 陈丽珍 | A kind of more piece screwdriver |
| CN207606740U (en) * | 2017-12-12 | 2018-07-13 | 孙玮 | A kind of screwdriver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI738608B (en) * | 2021-01-15 | 2021-09-01 | 原利興工業有限公司 | Tool extension |
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| Publication number | Publication date |
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| CN110815109B (en) | 2021-07-23 |
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