CN215503323U - Quick extension rod mechanism - Google Patents
Quick extension rod mechanism Download PDFInfo
- Publication number
- CN215503323U CN215503323U CN202120521989.6U CN202120521989U CN215503323U CN 215503323 U CN215503323 U CN 215503323U CN 202120521989 U CN202120521989 U CN 202120521989U CN 215503323 U CN215503323 U CN 215503323U
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- extension rod
- quick extension
- split nut
- sleeve
- quick
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Abstract
The utility model discloses a quick extension rod mechanism, which relates to the technical field of medical instruments, and is used for quickly extending a rod sleeve; one end of the opening and closing nut seat is connected with one end of the quick extension rod sleeve; the other end of the split nut seat is provided with a split nut; the split nut locking sleeve is slidably arranged on the outer edges of the split nut and the split nut seat; the screw rod sequentially penetrates through the split nut and the split nut seat and extends into the quick extension rod sleeve; one end of the opening and closing nut seat is provided with a mounting hole, and the adjusting turn number counting spring is arranged in the mounting hole; the adjusting steel ball for counting the number of turns is provided with a groove on the end face of one end of the quick extension rod sleeve, and the adjusting spring for counting the number of turns is connected with the adjusting steel ball for counting the number of turns and abuts against the adjusting steel ball in the groove. It can meet the requirements of early stage, middle stage and later stage of fracture, and has stronger stability and convenient operation.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a quick extension rod mechanism.
Background
The quick extension rod is mainly used for a main supporting part on an external fixing support for orthopedics, has a telescopic function and stronger stability, and is mainly used for supporting and adjusting the axial length of the external fixing support so as to meet the requirements of early stage, middle stage and later stage of fracture.
However, the function of the rapid extension rod in the prior art is single, rapid extension can only be realized, the extension length can not be accurately controlled, and the requirements of the early stage, the middle stage and the later stage of fracture are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a quick extension rod mechanism which is used for solving the technical problem.
The technical scheme adopted by the utility model is as follows:
a quick-extension pole mechanism comprising:
a quick extension rod sleeve;
one end of the opening and closing nut seat is connected with one end of the quick extension rod sleeve;
the other end of the split nut seat is provided with the split nut;
the split nut locking sleeve is slidably arranged on the split nut and the outer edge of the split nut seat;
the screw rod sequentially penetrates through the opening and closing nut and the opening and closing nut seat and extends into the quick extension rod sleeve;
the adjusting nut seat is provided with a mounting hole at one end, and the adjusting coil number counting spring is arranged in the mounting hole;
the adjusting device comprises an adjusting turn number counting steel ball, wherein a groove is formed in the end face of one end of the quick extension rod sleeve, and an adjusting turn number counting spring is connected with the adjusting turn number counting steel ball and abuts against the adjusting turn number counting steel ball in the groove.
Preferably, the quick extension rod adjusting device further comprises a quick extension rod adjusting sleeve, and the quick extension rod adjusting sleeve is arranged on the outer edge of the joint of the quick extension rod sleeve and the opening and closing nut seat.
Preferably, the quick extension rod adjusting sleeve is fixed on the outer edge of the joint of the quick extension rod sleeve and the opening and closing nut seat through the screw.
Preferably, a sliding groove is formed in one side of the quick extension rod sleeve, and the sliding groove is arranged along the axial direction of the quick extension rod sleeve.
As a further preferred option, one side of the fast extension rod sleeve is provided with a plurality of scales, and a plurality of the scales are arranged on one side of the sliding groove, and a plurality of the scales are arranged along the axial direction of the fast extension rod sleeve.
As a further preferred option, the quick extension rod mechanism further comprises an indication limiting pin, the indication limiting pin is arranged at one end of the screw rod, and the indication limiting pin is located in the sliding groove.
Preferably, the split nut is a two-segment split nut, the two-segment split nut comprises a first split nut and a second split nut, and the first split nut and the second split nut are fixed on the screw rod through the split nut locking sleeve.
As a further preferred option, the split type nut further comprises a split nut spreading spring, first clamping grooves are respectively formed in the inner walls of the first split nut and the second split nut, the first clamping grooves are connected with each other to form a first mounting groove, and the split nut spreading spring is arranged in the first mounting groove.
Preferably, the damping device further comprises a damping steel wire spring ring, a second mounting groove is formed in the outer edge of the split nut seat, the damping steel wire spring ring is arranged in the second mounting groove, and the outer side wall of the damping steel wire spring ring is abutted to the inner side wall of the split nut locking sleeve.
As a further preferred option, the quick extension rod adjusting sleeve further comprises a spring steel wire check ring, a third mounting groove is formed in the outer edge of the quick extension rod sleeve, the spring steel wire check ring is arranged in the third mounting groove, and the outer side wall of the spring steel wire check ring is abutted to the inner side wall of the quick extension rod adjusting sleeve.
The technical scheme has the following advantages or beneficial effects:
the rapid extension rod mechanism not only has the function of rapid extension, but also can accurately control the extension length, can meet the requirements of early stage, middle stage and later stage of fracture, and has stronger stability and convenient operation.
Drawings
FIG. 1 is a front view of a quick-extension pole mechanism of the present invention;
FIG. 2 is a right side view of the quick rod extension mechanism of the present invention;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a sectional view taken along line C-C of FIG. 2;
fig. 5 is a schematic view showing the structure of the quick extension rod mechanism in which the opening and closing nut is opened.
In the figure: 1. a quick extension rod mechanism; 101. a quick extension rod sleeve; 102. opening and closing the nut seat; 103. opening and closing the nut; 104. a split nut locking sleeve; 105. a screw; 106. adjusting a coil count spring; 107. adjusting a steel ball for counting the number of turns; 108. a quick extension rod adjusting sleeve; 109. a screw; 110. a chute; 111. calibration; 112. indicating a limit pin; 113. the split nut expands the spring; 114. a damping wire spring ring; 115. spring steel wire retainer ring.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a front view of a quick-extension pole mechanism of the present invention; FIG. 2 is a right side view of the quick rod extension mechanism of the present invention; FIG. 3 is a sectional view taken along line B-B of FIG. 1; FIG. 4 is a sectional view taken along line C-C of FIG. 2; fig. 5 is a schematic view showing the structure of the quick extension rod mechanism in which the opening and closing nut is opened. Referring to fig. 1-5, a preferred embodiment is shown, showing a quick-extension lever mechanism 1, comprising:
a quick extension rod sleeve 101;
an opening and closing nut seat 102, wherein one end of the opening and closing nut seat 102 is connected with one end of the quick extension rod sleeve 101;
the other end of the split nut seat 102 is provided with a split nut 103;
the split nut locking sleeve 104 is arranged on the outer edges of the split nut 103 and the split nut seat 102 in a sliding manner;
the screw 105, the screw 105 crosses the split nut 103, the split nut seat 102 sequentially and extends to the fast extension rod casing 101;
a mounting hole is formed in one end of the opening-closing nut seat 102, and the adjusting turn number counting spring 106 is arranged in the mounting hole;
a groove is arranged on the end face of one end of the quick extension rod sleeve 101, and an adjusting turn number counting spring 106 is connected with the adjusting turn number counting steel ball 107 and supports the adjusting turn number counting steel ball 107 in the groove. In this embodiment, as shown in fig. 1 to 5, no thread or thread is provided on the inner wall of the quick extension rod sleeve 101, the split nut seat 102 is fixed at one end of the quick extension rod sleeve 101 through the quick extension rod adjusting sleeve 108, and the split nut 103 is fixed on the screw 105 and the split nut seat 102 through the split nut locking sleeve 104. The outer peripheral wall of the screw 105 is provided with screw threads, the inner wall of the opening and closing nut 103 is provided with nut threads, and the nut threads and the screw threads are locked and fixed in a locking state of the opening and closing nut 103. When the split nut 103 is in an open state, the nut threads are separated from the screw threads, and the split nut 103 is still fixed on the split nut seat 102 under the action of the split nut locking sleeve 104.
Further, as a preferred embodiment, the extension rod mechanism further includes a quick extension rod adjusting sleeve 108, and the outer edge of the connection between the quick extension rod sleeve 101 and the split nut seat 102 is provided with the quick extension rod adjusting sleeve 108. The adjusting turn count steel ball 107 in this embodiment is matched with the adjusting turn count spring 106, and is used for recording the rotation turns of the adjusting sleeve 108 of the quick extension rod, and realizing the fine adjustment of the screw 105.
Further, as a preferred embodiment, the extension rod mechanism further comprises a screw 109, and the quick extension rod adjusting sleeve 108 is fixed on the outer edge of the connection part of the quick extension rod sleeve 101 and the split nut seat 102 through the screw 109. The screw 109 in this embodiment is a countersunk screw 109 for connecting the rod adjusting sleeve 108 to the rod sleeve 101.
Further, as a preferred embodiment, a sliding groove 110 is formed at one side of the quick extension rod sleeve 101, and the sliding groove 110 is disposed along the axial direction of the quick extension rod sleeve 101.
Further, as a preferred embodiment, a plurality of scales 111 are disposed on one side of the quick extension rod sleeve 101, and the plurality of scales 111 are disposed on one side of the sliding groove 110, and the plurality of scales 111 are disposed along the axial direction of the quick extension rod sleeve 101.
Further, as a preferred embodiment, the device further includes an indication limiting pin 112, one end of the screw 105 is provided with the indication limiting pin 112, and the indication limiting pin 112 is located in the sliding groove 110. The indication limiting pin 112 in this embodiment is slidably disposed in the sliding groove 110, and under the action of the scale 111, the sliding distance of the indication limiting pin 112 can be accurately measured, so that the sliding distance of the screw 105 in the quick extension rod casing 101 is determined, and the accurate adjustment of the distance between the two lateral adjustment mechanisms can be quickly realized.
Further, as a preferred embodiment, the split nut 103 is a two-piece split nut, and the two-piece split nut includes a first split nut and a second split nut, and the first split nut and the second split nut are both fixed on the screw 105 through the split nut locking sleeve 104.
Further, as a preferred embodiment, the locking device further includes a nut opening spring 113, the inner walls of the first split nut and the second split nut are respectively provided with a first clamping groove, the two first clamping grooves are connected to form a first mounting groove, and the nut opening spring 113 is disposed in the first mounting groove. The split nut expanding spring 113 in this embodiment is provided between the first split nut and the second split nut, and is used to expand the first split nut and the second split nut, thereby realizing the opening action of the split nut 103.
Further, as a preferred implementation manner, the device further comprises a damping wire spring ring 114, a second mounting groove is formed in the outer edge of the split-nut seat 102, the damping wire spring ring 114 is disposed in the second mounting groove, and the outer side wall of the damping wire spring ring 114 abuts against the inner side wall of the split-nut locking sleeve 104. In this embodiment, the damping wire spring ring 114 is provided to prevent the split nut locking sleeve 104 from falling off accidentally.
Further, as a preferred embodiment, still include spring wire retaining ring 115, the third mounting groove has been seted up to the outer fringe of quick extension rod sleeve pipe 101, and spring wire retaining ring 115 locates in the third mounting groove, and the lateral wall of spring wire retaining ring 115 offsets with the inside wall of quick extension rod adjusting collar 108.
The principle of the extension rod mechanism is as follows:
when the rapid telescopic adjustment is needed, the resistance of the steel wire spring ring 114 for damping is overcome, the split nut locking sleeve 104 is pulled downwards, the first split nut and the second split nut are bounced to two sides under the action of the split nut spreading spring 113 by the split nut 103, so that the nut thread and the screw thread of the screw 105 are separated, and the screw 105 can be rapidly and rapidly adjusted in the rapid extension rod sleeve 101.
When fine telescopic adjustment is needed, the split nut locking sleeve 104 is pulled upwards, so that the split nut 103 is in a closed state, the damping steel wire spring ring 114 springs open at the moment to prevent the split nut locking sleeve 104 from falling off accidentally, and the quick extension rod adjusting sleeve 108 is rotated in the state to realize fine adjustment of the extension rod mechanism; in the fine adjustment process, when the initial position, adjustment number of turns count steel ball 107 is pushed up in the recess under the effect of adjustment number of turns count spring 106, when rotatory quick extension rod adjusting collar 108, adjustment number of turns count steel ball 107 is ejecting from the recess, the every rotatory round of quick extension rod adjusting collar 108, adjustment number of turns count steel ball 107 can pass in and out the recess once, there is obvious feeling, be convenient for count, and the every rotatory round of quick extension rod adjusting collar 108, the pitch adjustment is 1mm, the axial length change of extension rod mechanism is 1 mm.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (10)
1. A quick extension rod mechanism, comprising:
a quick extension rod sleeve;
one end of the opening and closing nut seat is connected with one end of the quick extension rod sleeve;
the other end of the split nut seat is provided with the split nut;
the split nut locking sleeve is slidably arranged on the split nut and the outer edge of the split nut seat;
the screw rod sequentially penetrates through the opening and closing nut and the opening and closing nut seat and extends into the quick extension rod sleeve;
the adjusting nut seat is provided with a mounting hole at one end, and the adjusting coil number counting spring is arranged in the mounting hole;
the adjusting device comprises an adjusting turn number counting steel ball, wherein a groove is formed in the end face of one end of the quick extension rod sleeve, and an adjusting turn number counting spring is connected with the adjusting turn number counting steel ball and abuts against the adjusting turn number counting steel ball in the groove.
2. The quick extension rod mechanism of claim 1, further comprising a quick extension rod adjustment sleeve, wherein the quick extension rod adjustment sleeve is disposed on an outer edge of a connection of the quick extension rod sleeve and the split nut seat.
3. The quick extension rod mechanism of claim 2, further comprising a screw through which said quick extension rod adjustment sleeve is secured to an outer edge of a connection of said quick extension rod sleeve and said split nut seat.
4. The quick extension rod mechanism of claim 1, wherein a slide groove is formed at one side of the quick extension rod sleeve, and the slide groove is formed along an axial direction of the quick extension rod sleeve.
5. The quick extension rod mechanism according to claim 4, wherein a plurality of scales are provided on one side of the quick extension rod sleeve, and a plurality of the scales are provided on one side of the sliding groove, and a plurality of the scales are provided along an axial direction of the quick extension rod sleeve.
6. The quick extension rod mechanism according to claim 4, further comprising an indication limiting pin, wherein the indication limiting pin is disposed at one end of the screw rod, and the indication limiting pin is located in the sliding groove.
7. The quick extension rod mechanism of claim 1, wherein the split nut is a two-piece split nut, and the two-piece split nut comprises a first split nut and a second split nut, and the first split nut and the second split nut are both fixed on the screw rod through the split nut locking sleeve.
8. The quick extension rod mechanism according to claim 7, further comprising a split nut expanding spring, wherein the inner walls of the first split nut and the second split nut are respectively provided with a first clamping groove, the first clamping grooves are connected with each other to form a first mounting groove, and the split nut expanding spring is disposed in the first mounting groove.
9. The quick extension rod mechanism according to claim 1, further comprising a damping wire spring ring, wherein a second mounting groove is formed in the outer edge of the split-nut seat, the damping wire spring ring is arranged in the second mounting groove, and the outer side wall of the damping wire spring ring abuts against the inner side wall of the split-nut locking sleeve.
10. The quick extension rod mechanism according to claim 2, further comprising a spring wire retainer ring, wherein a third mounting groove is formed in an outer edge of the quick extension rod sleeve, the spring wire retainer ring is disposed in the third mounting groove, and an outer side wall of the spring wire retainer ring abuts against an inner side wall of the quick extension rod adjusting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521989.6U CN215503323U (en) | 2021-03-12 | 2021-03-12 | Quick extension rod mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521989.6U CN215503323U (en) | 2021-03-12 | 2021-03-12 | Quick extension rod mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215503323U true CN215503323U (en) | 2022-01-14 |
Family
ID=79800258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120521989.6U Active CN215503323U (en) | 2021-03-12 | 2021-03-12 | Quick extension rod mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215503323U (en) |
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2021
- 2021-03-12 CN CN202120521989.6U patent/CN215503323U/en active Active
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