CN214771869U - T-shaped ratchet wheel quick-change handle - Google Patents
T-shaped ratchet wheel quick-change handle Download PDFInfo
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- CN214771869U CN214771869U CN202121073284.9U CN202121073284U CN214771869U CN 214771869 U CN214771869 U CN 214771869U CN 202121073284 U CN202121073284 U CN 202121073284U CN 214771869 U CN214771869 U CN 214771869U
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to T type ratchet quick change handle. This T type ratchet quick change handle includes: the ratchet mechanism comprises a handle part, a spiral cover which is arranged at the front end of the handle part and is rotationally connected with the handle part, a connecting rod which penetrates through the spiral cover and extends into the handle part, and a ratchet mechanism which is arranged in the spiral cover and is linked with the spiral cover; the ratchet mechanism is linked with the connecting rod; a plurality of bearings are sleeved outside the connecting rod, and the inner ring of each bearing is in interference fit with the connecting rod; the ratchet mechanism includes: the ratchet wheel seat is sleeved outside each bearing; the ratchet seat is in interference fit with the outer ring of each bearing; the rotating cover is rotated along the handle part, the ratchet mechanism works, and the connecting rod rotates along with the ratchet mechanism. The utility model discloses a T type ratchet quick change handle, the inner circle through each bearing all with the equal interference fit of outer lane of connecting rod interference fit and ratchet seat and each bearing, can make the rocking gap control of connecting rod between 0.1 ~ 0.2mm, make T type ratchet quick change handle use more stable.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to T type ratchet quick change handle.
Background
In the clinical operation process, drilling, tapping, screwing and screwing are all realized by a ratchet handle.
The traditional ratchet handle adopts clearance fit between a hole and a shaft, the deformation is caused by heat treatment, the tolerance is larger, and if the tolerance is small, the processing cost and the reject ratio are greatly increased. Because the triangular interfaces are all the rod pieces with the connection length of more than 200mm, the triangular interfaces shake greatly when the fit tolerance is large, and the head of the connected rod piece shakes more greatly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a T type ratchet quick change handle, the inner circle through each bearing all with the equal interference fit of outer lane of connecting rod interference fit and ratchet seat and each bearing, can make the rocking gap control of connecting rod between 0.1 ~ 0.2 mm.
In order to solve the technical problem, the utility model provides a T type ratchet quick change handle, include:
the ratchet mechanism comprises a handle part, a spiral cover which is arranged at the front end of the handle part and is rotationally connected with the handle part, a connecting rod which penetrates through the spiral cover and extends into the handle part, and a ratchet mechanism which is arranged in the spiral cover and is linked with the spiral cover; the ratchet mechanism is linked with the connecting rod; a plurality of bearings are sleeved outside the connecting rod, and the inner ring of each bearing is in interference fit with the connecting rod; the ratchet mechanism includes: the ratchet wheel seat is sleeved outside each bearing; the ratchet seat is in interference fit with the outer ring of each bearing; the rotating cover is rotated along the handle part, the ratchet mechanism works, and the connecting rod rotates along with the ratchet mechanism.
Further, the ratchet mechanism further includes: ratchet gears sleeved and fixed outside the connecting rod, ratchets distributed on two sides of the ratchet gears and arranged oppositely, and ratchet springs arranged corresponding to the ratchets; each ratchet is hinged with the ratchet seat through a corresponding ratchet pin; when the rotary cover is rotated, the ratchet seat is linked with the rotary cover, the ratchet spring presses the corresponding ratchet to rotate along the ratchet pin, and then the corresponding ratchet pulls the ratchet gear to rotate along with the ratchet pin, so that the connecting rod is driven to rotate along with the ratchet gear.
Further, T type ratchet quick change handle still includes: a reversing mechanism; the reversing mechanism is suitable for adjusting the rotating direction of the connecting rod driven by the rotary cover.
Further, the reversing mechanism includes: a stop pin fixedly connected with the ratchet seat and a reversing groove arranged on the inner wall of the screw cap; the rotary cover is rotated clockwise or anticlockwise until the stop pin abuts against one side edge of the reversing groove, and then the rotary cover is linked with the ratchet wheel seat to realize reversing.
Furthermore, the rear end of the connecting rod is provided with an adjusting nut.
Furthermore, a quick-change mechanism is arranged at the front end of the connecting rod; the quick change mechanism includes: the connecting rod comprises a triangular sliding sleeve sleeved outside the connecting rod, a joint spring arranged in a cavity between the triangular sliding sleeve and the connecting rod, and a triangular interface which is arranged at the front end of the connecting rod and is matched with the tool rod piece; the triangular sliding sleeve is connected with the connecting rod in a sliding manner; the triangular sliding sleeve is pulled to the rear end along the connecting rod, and then the triangular interface is exposed so as to replace the tool rod piece connected with the triangular interface.
Furthermore, the rear end of the triangular sliding sleeve is provided with a limiting part.
The beneficial effects of the utility model are that, the utility model discloses a T type ratchet quick change handle, the inner circle through each bearing all with the equal interference fit of outer lane of connecting rod interference fit and ratchet seat and each bearing, can make the rocking gap control of connecting rod between 0.1 ~ 0.2mm, make rocking reduction of the instrument member that the connecting rod is connected to make T type ratchet quick change handle use more stable.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of the T-shaped ratchet quick-change handle of the present invention;
fig. 2 is a sectional view taken along the line a-a in fig. 1.
In the figure:
the handle part 1, the screw cap 2, the connecting rod 3, the ratchet mechanism 4, the ratchet seat 41, the ratchet wheel 42, the ratchet 43, the ratchet spring 44, the ratchet pin 45, the bearing 5, the reversing mechanism 6, the stop pin 61, the reversing groove 62, the adjusting nut 7, the quick-change mechanism 8, the triangular sliding sleeve 81, the limiting part 811, the joint spring 82 and the triangular interface 83.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Fig. 1 is a sectional view of the T-shaped ratchet quick-change handle of the present invention;
as shown in fig. 1, the present embodiment provides a T-shaped ratchet quick-change handle, which includes: the handle part 1, a spiral cover 2 which is arranged at the front end of the handle part 1 and is rotationally connected with the handle part 1, a connecting rod 3 which penetrates through the spiral cover 2 and extends into the handle part 1, and a ratchet mechanism 4 which is arranged in the spiral cover 2 and is linked with the spiral cover 2; the ratchet mechanism 4 is linked with the connecting rod 3; a plurality of bearings 5 are sleeved outside the connecting rod 3, and the inner ring of each bearing 5 is in interference fit with the connecting rod 3; the ratchet mechanism 4 includes: a ratchet seat 41 sleeved outside each bearing 5; the ratchet wheel seat 41 is in interference fit with the outer ring of each bearing 5; the cap 2 is rotated along the handle portion 1, the ratchet mechanism 4 is operated, and the connecting rod 3 is rotated accordingly. Through the interference fit of the inner rings of the bearings 5 and the connecting rod 3 and the interference fit of the ratchet seat 41 and the outer rings of the bearings 5, the shaking clearance of the connecting rod 3 can be controlled between 0.1 mm and 0.2mm, and the shaking of the tool rod piece connected with the connecting rod 3 is reduced.
Wherein the number of bearings 5 is at least 2 groups to ensure that the stability of the connecting rod 3 is improved.
Fig. 2 is a sectional view taken along the line a-a in fig. 1.
As shown in fig. 2, the ratchet mechanism 4 further includes: a ratchet gear 42 sleeved and fixed outside the connecting rod 3, ratchets 43 distributed on two sides of the ratchet gear 42 and arranged oppositely, and a ratchet spring 44 arranged corresponding to the ratchets 43; each ratchet 43 is hinged with the ratchet seat 41 through a corresponding ratchet pin 45; when the rotary cap 2 is rotated, the ratchet seat 41 is linked with the rotary cap 2, and a ratchet spring 44 presses the corresponding ratchet 43 to rotate along the ratchet pin 45, so that the corresponding ratchet 43 drives the ratchet gear 42 to rotate, and the connecting rod 3 is driven to rotate along with the ratchet gear.
Specifically, when the screw cap 2 is rotated, the ratchet seat 41 rotates therewith, one of the ratchet springs 44 presses the corresponding ratchet 43 to rotate along the ratchet pin 45, the corresponding ratchet 43 can shift the ratchet gear 42 to rotate therewith, and finally the connecting rod 3 is driven to rotate therewith, so that the tool rod connected to the front end of the connecting rod 3 can screw objects such as surgical screws, and when the rotation direction is changed, the other ratchet spring 44 and the ratchet 43 work.
In this embodiment, the T-shaped ratchet quick-change handle further includes: a reversing mechanism 6; the reversing mechanism 6 is suitable for adjusting the rotating direction of the connecting rod 3 driven by the rotary cover 2. Because the surgical screw needs to be screwed in or out, the rotating direction of the connecting rod 3 driven by the rotary cover 2 needs to be adjusted.
Optionally, the reversing mechanism 6 includes: a stop pin 61 fixedly connected with the ratchet wheel seat 41 and a reversing groove 62 arranged on the inner wall of the screw cap 2; the screw cap 2 is rotated clockwise or counterclockwise until the stop pin 61 abuts against one side edge of the reversing groove 62, and then the screw cap 2 is linked with the ratchet wheel seat 41 to realize reversing. The reversing groove 62 is arranged to realize the switching of the rotating direction, after the reversing, the stop pin 61 abuts against the other side edge of the reversing groove 62, and the rotary cover 2 is linked with the ratchet wheel seat 41 to realize the reversing of the connecting rod 3.
In this embodiment, the rear end of the connecting rod 3 is provided with an adjusting nut 7. The adjusting nut 7 is in threaded connection with the rear end of the connecting rod 3, so that the connecting rod 3 is axially positioned.
In this embodiment, a quick-change mechanism 8 is arranged at the front end of the connecting rod 3; the quick change mechanism 8 includes: a triangular sliding sleeve 81 sleeved outside the connecting rod 3, a joint spring 82 arranged in a cavity between the triangular sliding sleeve 81 and the connecting rod 3, and a triangular interface 83 arranged at the front end of the connecting rod 3 and matched with the tool rod piece; the triangular sliding sleeve 81 is connected with the connecting rod 3 in a sliding manner; the triangular sliding bush 81 is pulled to the rear end along the connecting rod 3, and the triangular joint 83 is exposed to replace the tool bar connected with the triangular joint 83.
Wherein, the triangular interface 83 is adapted with the tool bar (such as the tool like the screwdriver) and pulls the triangular sliding sleeve 81 along the connecting rod 3 to the rear end, then the triangular interface 83 is exposed, the tool bar connected with the triangular interface 83 can be replaced, the triangular sliding sleeve 81 is loosened, and the triangular sliding sleeve 81 is reset under the action of the joint spring 82, thereby completing the replacement of the tool bar.
In this embodiment, the rear end of the triangular sliding sleeve 81 is provided with a limiting portion 811. The limiting part 811 is arranged to prevent the triangular sliding sleeve 81 from being reset and pulled out under the action of the joint spring 82.
To sum up, the utility model discloses a T type ratchet quick change handle, the inner circle through each bearing 5 all with the equal interference fit of connecting rod 3 interference fit and ratchet seat 41 and the equal interference fit of outer lane of each bearing 5, can make the rocking gap control of connecting rod 3 between 0.1 ~ 0.2mm, make rocking of the instrument member that connecting rod 3 is connected reduce to it is more stable to make T type ratchet quick change handle use.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A T-shaped ratchet quick-change handle is characterized by comprising:
the ratchet mechanism comprises a handle part, a spiral cover which is arranged at the front end of the handle part and is rotationally connected with the handle part, a connecting rod which penetrates through the spiral cover and extends into the handle part, and a ratchet mechanism which is arranged in the spiral cover and is linked with the spiral cover;
the ratchet mechanism is linked with the connecting rod;
a plurality of bearings are sleeved outside the connecting rod, and the inner ring of each bearing is in interference fit with the connecting rod;
the ratchet mechanism includes: the ratchet wheel seat is sleeved outside each bearing;
the ratchet seat is in interference fit with the outer ring of each bearing;
the rotating cover is rotated along the handle part, the ratchet mechanism works, and the connecting rod rotates along with the ratchet mechanism.
2. A T-shaped ratchet quick-change handle according to claim 1,
the ratchet mechanism further comprises: ratchet gears sleeved and fixed outside the connecting rod, ratchets distributed on two sides of the ratchet gears and arranged oppositely, and ratchet springs arranged corresponding to the ratchets;
each ratchet is hinged with the ratchet seat through a corresponding ratchet pin;
when the rotary cover is rotated, the ratchet seat is linked with the rotary cover, the ratchet spring presses the corresponding ratchet to rotate along the ratchet pin, and then the corresponding ratchet pulls the ratchet gear to rotate along with the ratchet pin, so that the connecting rod is driven to rotate along with the ratchet gear.
3. A T-shaped ratchet quick-change handle according to claim 2,
the T-shaped ratchet wheel quick-change handle further comprises: a reversing mechanism;
the reversing mechanism is suitable for adjusting the rotating direction of the connecting rod driven by the rotary cover.
4. A T-shaped ratchet quick-change handle according to claim 3,
the reversing mechanism comprises: a stop pin fixedly connected with the ratchet seat and a reversing groove arranged on the inner wall of the screw cap;
the rotary cover is rotated clockwise or anticlockwise until the stop pin abuts against one side edge of the reversing groove, and then the rotary cover is linked with the ratchet wheel seat to realize reversing.
5. A T-shaped ratchet quick-change handle according to claim 1,
and the rear end of the connecting rod is provided with an adjusting nut.
6. A T-shaped ratchet quick-change handle according to claim 1,
the front end of the connecting rod is provided with a quick-change mechanism;
the quick change mechanism includes: the connecting rod comprises a triangular sliding sleeve sleeved outside the connecting rod, a joint spring arranged in a cavity between the triangular sliding sleeve and the connecting rod, and a triangular interface which is arranged at the front end of the connecting rod and is matched with the tool rod piece;
the triangular sliding sleeve is connected with the connecting rod in a sliding manner;
the triangular sliding sleeve is pulled to the rear end along the connecting rod, and then the triangular interface is exposed so as to replace the tool rod piece connected with the triangular interface.
7. A T-shaped ratchet quick-change handle according to claim 6,
the rear end of the triangular sliding sleeve is provided with a limiting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121073284.9U CN214771869U (en) | 2021-05-18 | 2021-05-18 | T-shaped ratchet wheel quick-change handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121073284.9U CN214771869U (en) | 2021-05-18 | 2021-05-18 | T-shaped ratchet wheel quick-change handle |
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| Publication Number | Publication Date |
|---|---|
| CN214771869U true CN214771869U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121073284.9U Active CN214771869U (en) | 2021-05-18 | 2021-05-18 | T-shaped ratchet wheel quick-change handle |
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| CN (1) | CN214771869U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366272A (en) * | 2021-12-16 | 2022-04-19 | 芜湖锐进医疗设备有限公司 | Ratchet handle capable of being adjusted forwards and backwards |
-
2021
- 2021-05-18 CN CN202121073284.9U patent/CN214771869U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366272A (en) * | 2021-12-16 | 2022-04-19 | 芜湖锐进医疗设备有限公司 | Ratchet handle capable of being adjusted forwards and backwards |
| CN114366272B (en) * | 2021-12-16 | 2023-10-13 | 芜湖锐进医疗设备有限公司 | Ratchet handle capable of being positively and negatively adjusted |
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