CN212643468U - Foldable hollow transmission screw - Google Patents
Foldable hollow transmission screw Download PDFInfo
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- CN212643468U CN212643468U CN202021448214.2U CN202021448214U CN212643468U CN 212643468 U CN212643468 U CN 212643468U CN 202021448214 U CN202021448214 U CN 202021448214U CN 212643468 U CN212643468 U CN 212643468U
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- connecting rod
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- 230000005540 biological transmission Effects 0.000 title abstract description 22
- 238000009434 installation Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 235000019994 cava Nutrition 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000009347 mechanical transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a folding hollow drive screw, including two screw rods, two sliders and an intermediate connecting rod, the inside of two screw rods all has axially extended's slip passageway, and two sliders are installed in the slip passageway that corresponds slidable respectively to with the coaxial setting of screw rod that corresponds, simultaneously, the one end terminal surface that the corresponding screw rod is close to adjacent screw rod is worn out respectively to the one end of two sliders, and the both ends of intermediate connecting rod are worn out the one end that corresponds the main screw rod respectively with two sliders and are rotated and be connected. By adopting the foldable hollow transmission screw rod of the technical scheme, not only can the two screw rods rotate relatively, the folding function is realized, and the application scenes of the transmission screw rod are increased; the two sliding blocks can slide along the corresponding sliding channels so as to change the relative distance between the two screw rods and adjust the length of the whole body; meanwhile, the structure is simple and reliable, any part can be easily replaced when damaged, and the use and maintenance cost is reduced.
Description
Technical Field
The utility model relates to a mechanical transmission part technical field, concretely relates to folding hollow drive screw.
Background
The screw transmission is mechanical transmission which realizes the conversion of rotary motion and linear motion by screwing a screw and a thread tooth surface, and has extremely wide application requirements, so that a large number of mechanical devices adopt a screw transmission mechanical transmission mode.
In the existing spiral transmission mechanism, transmission at a longer distance is realized, transmission screws with equal length must be used, the occupied space is larger, and in the later use process, once any part of the transmission screws is worn and failed, the whole transmission screw needs to be replaced, so that the cost of manpower and material resources is high, and the resource waste exists.
In the transmission requirements of a long distance, the load is small, the requirement on transmission precision is not high, the space is limited, and the transmission screw is required to have a folding function. Therefore, it is necessary to design a suitable driving screw.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a folding hollow drive screw.
The technical scheme is as follows:
a collapsible hollow drive screw, its main points lie in, include:
two screw rods, the insides of which are provided with axially extending sliding channels;
the two sliding blocks are respectively slidably arranged in the corresponding sliding channels and are coaxially arranged with the corresponding screw rods, and one ends of the two sliding blocks respectively penetrate out of the end surfaces of the corresponding screw rods, which are close to the adjacent screw rods;
and two ends of the middle connecting rod are respectively connected with one end of the two sliding blocks penetrating out of the corresponding main screw rod in a rotating manner.
By adopting the structure, the two screws can rotate relatively, the folding function is realized, and the application scenes of the transmission screws are increased; the two sliding blocks can slide along the corresponding sliding channels so as to change the relative distance between the two screw rods and adjust the length of the whole body; meanwhile, the structure is simple and reliable, any part can be easily replaced when damaged, and the use and maintenance cost is reduced.
Preferably, the method comprises the following steps: the screw rod is close to the one end terminal surface of middle connecting rod and has all been seted up the slider and worn the hole, the aperture that the slider wore the hole all is less than sliding channel's diameter, the slider all include with correspond sliding channel sliding fit's slider big head and with correspond slider wearing hole sliding fit's slider connecting rod portion, the one end of slider connecting rod portion all with the big head fixed connection of slider that corresponds, the other end all rotates with the adjacent end of middle connecting rod to be connected. Structure more than adopting, simple reliable can inject the slider in sliding channel, prevents that the slider from deviating from.
Preferably, the method comprises the following steps: the sliding channel and the big head part of the sliding block are of cylindrical structures, at least one lead groove is formed in the hole wall of the sliding block penetrating hole in a recessed mode, lead convex ribs matched with the corresponding lead grooves are formed in the outer peripheral face of the connecting rod part of the sliding block in a protruding mode, and all the lead convex ribs can be axially inserted into the corresponding lead grooves in a sliding mode. By adopting the structure, the sliding block can only axially slide relative to the screw rod, relative rotation cannot occur, and the sliding block is simple and reliable.
Preferably, the method comprises the following steps: the end faces of the ends, close to the middle connecting rod, of the sliding block connecting rod parts are all sunken to form installation notch grooves, at least two ends of the middle connecting rod are of sheet structures matched with the corresponding installation notch grooves, and the two ends of the middle connecting rod are inserted into the corresponding installation notch grooves and then are respectively connected with the corresponding sliding block connecting rod parts through connecting pins in a rotating mode. By adopting the structure, the device is simple, reliable and easy to realize.
Preferably, the method comprises the following steps: the sliding channels penetrate through the end face, far away from the middle connecting rod, of one end of the corresponding screw rod. The above structure is adopted to facilitate the fitting of the slider into the slide passage.
Compared with the prior art, the beneficial effects of the utility model are that:
by adopting the foldable hollow transmission screw rod of the technical scheme, not only can the two screw rods rotate relatively, the folding function is realized, and the application scenes of the transmission screw rod are increased; the two sliding blocks can slide along the corresponding sliding channels so as to change the relative distance between the two screw rods and adjust the length of the whole body; meanwhile, the structure is simple and reliable, any part can be easily replaced when damaged, and the use and maintenance cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention in an expanded state;
fig. 2 is a schematic structural view of the present invention in a folded state;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 4 is a schematic structural view of a screw;
fig. 5 is a schematic structural diagram of a slider.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
As shown in fig. 1 and 2, a foldable hollow drive screw mainly comprises two screws 1, two sliding blocks 2 and an intermediate connecting rod 3. Wherein, the two screws 1 are internally provided with axially extending sliding channels 1 a. The two sliding blocks 2 are respectively slidably installed in the corresponding sliding channels 1a and are coaxially arranged with the corresponding screw rods 1, and meanwhile, one ends of the two sliding blocks 2 penetrate out of the end faces, close to the adjacent screw rods 1, of the corresponding screw rods 1 respectively. Two ends of the middle connecting rod 3 are respectively connected with one end of the two sliding blocks 2 penetrating out of the corresponding main screw rod 1 in a rotating way.
Therefore, when the foldable hollow transmission screw is in an unfolded state (namely, during working), the axes of the two screws 1 are overlapped, and screw transmission can be realized. When the foldable hollow transmission screw rods are in a folded state (namely, when the foldable hollow transmission screw rods do not work), one screw rod 1 can rotate relative to the other screw rod 1, so that the foldable hollow transmission screw rods are folded.
Referring to fig. 3-5, the end surfaces of the screw rods 1 near the middle connecting rod 3 are respectively provided with a slider through hole 1b, the diameters of the slider through holes 1b are smaller than the diameter of the sliding channel 1a, and the sliding channels 1a respectively penetrate through the end surfaces of the corresponding screw rods 1 far away from the middle connecting rod 3, so that the installation of the slider 2 is facilitated, and the slider 2 can be effectively prevented from being separated. Slider 2 all includes fixed connection's big head of slider 2a and slider connecting rod portion 2b, and in this embodiment, big head of slider 2a and slider connecting rod portion 2b integrated into one piece to improve structural strength, increase of service life.
The slider large head portion 2a is slidably fitted to the corresponding slide passage 1a, and the slider link portion 2b is slidably fitted to the corresponding slider insertion hole 1b, so that the slider 2 can reliably slide axially relative to the screw 1. And, the slider connecting rod part 2b is connected with the adjacent end of the intermediate connecting rod 3 in a rotating way at the end penetrating out of the corresponding screw 1, so that the two sliders 2 can rotate relatively, and the two screws 1 can also rotate relatively.
Referring to fig. 2, 4 and 5, the sliding channel 1a and the large head portion 2a of the slider are both cylindrical structures, at least one lead groove 1b1 is formed on the wall of the slider through hole 1b in a recessed manner, lead convex ribs 2b1 corresponding to the corresponding lead grooves 1b1 are formed on the outer circumferential surface of the slider connecting rod portion 2b in a protruding manner, and each lead convex rib 2b1 can be axially inserted into the corresponding lead groove 1b1 in a sliding manner, so that the slider 2 can only axially slide relative to the screw rod 1 without relative rotation, and the structure is simple and reliable.
Referring to fig. 1, 2 and 5, the end surfaces of the slider link portions 2b near the middle link 3 are recessed to form mounting notches 2b2, at least two ends of the middle link 3 are sheet-shaped structures corresponding to the mounting notches 2b2, and the two ends of the middle link 3 are inserted into the corresponding mounting notches 2b2 and then are rotatably connected with the corresponding slider link portions 2b through the connecting pins 4, so that reliable connection between the middle link 3 and the two sliders 2 is ensured.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (5)
1. A collapsible, hollow drive screw, comprising:
two screw rods (1) which are internally provided with axially extending sliding channels (1 a);
the two sliding blocks (2) are respectively slidably arranged in the corresponding sliding channels (1a) and are coaxially arranged with the corresponding screw rods (1), and one ends of the two sliding blocks (2) respectively penetrate out of the end faces of the corresponding screw rods (1) close to one end of the adjacent screw rods (1);
and two ends of the middle connecting rod (3) are respectively and rotatably connected with one end of the two sliding blocks (2) penetrating out of the corresponding main screw (1).
2. A collapsible, hollow drive screw according to claim 1, characterised in that: the screw rod (1) is close to the one end terminal surface of middle connecting rod (3) and has all been seted up the slider and has been worn hole (1b), the aperture that the slider wore hole (1b) all is less than the diameter of sliding channel (1a), slider (2) all include with corresponding sliding channel (1a) sliding fit's big head of slider (2a) and with corresponding slider wearing hole (1b) sliding fit's slider connecting rod portion (2b), the one end of slider connecting rod portion (2b) all with the big head of slider (2a) fixed connection that corresponds, the other end all with middle connecting rod (3) adjacent end rotation connection.
3. A collapsible, hollow drive screw according to claim 2, characterised in that: the sliding channel (1a) and the big head part (2a) of the slider are both of cylindrical structures, at least one lead groove (1b1) is formed on the hole wall of the slider penetrating hole (1b) in a recessed mode, lead convex ribs (2b1) adaptive to the corresponding lead grooves (1b1) are formed on the outer peripheral surface of the slider connecting rod part (2b) in a protruding mode, and all the lead convex ribs (2b1) can be axially inserted into the corresponding lead grooves (1b1) in a sliding mode.
4. A collapsible, hollow drive screw according to claim 2, characterised in that: the slider connecting rod part (2b) is close to the one end terminal surface of middle connecting rod (3) and all caves in and is formed with installation notch (2b2), middle connecting rod (3) at least both ends be with corresponding installation notch (2b2) adapted sheet structure, and the both ends of this middle connecting rod (3) are inserted respectively through connecting pin (4) and are connected with slider connecting rod part (2b) rotation that corresponds behind corresponding installation notch (2b 2).
5. A collapsible, hollow drive screw according to claim 2, characterised in that: the sliding channels (1a) penetrate through the end face, far away from the middle connecting rod (3), of the corresponding screw rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021448214.2U CN212643468U (en) | 2020-07-21 | 2020-07-21 | Foldable hollow transmission screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021448214.2U CN212643468U (en) | 2020-07-21 | 2020-07-21 | Foldable hollow transmission screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643468U true CN212643468U (en) | 2021-03-02 |
Family
ID=74763412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021448214.2U Active CN212643468U (en) | 2020-07-21 | 2020-07-21 | Foldable hollow transmission screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212643468U (en) |
-
2020
- 2020-07-21 CN CN202021448214.2U patent/CN212643468U/en active Active
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