CN110388429B - Transmission module with protection function and electronic device using same - Google Patents
Transmission module with protection function and electronic device using same Download PDFInfo
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- CN110388429B CN110388429B CN201910508701.9A CN201910508701A CN110388429B CN 110388429 B CN110388429 B CN 110388429B CN 201910508701 A CN201910508701 A CN 201910508701A CN 110388429 B CN110388429 B CN 110388429B
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- transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 58
- 238000005452 bending Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2021—Screw mechanisms with means for avoiding overloading
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H25/2454—Brakes; Rotational locks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The application provides a transmission module with protect function, the transmission module includes: the transmission screw rod is provided with a first end and a second end which are opposite, and the first end and the second end are arranged along the axial direction of the transmission screw rod; the thread driving block comprises a first block and a second block, and the first block and the second block are combined to form an internal thread part with an inner thread; the transmission screw is arranged in the internal thread part to drive the thread driving block to move along the axial direction, the first sub-block comprises a first connecting part, the second sub-block comprises a second connecting part, the first connecting part and the second connecting part are connected through an elastic assembly, and when the transmission screw rotates to enable the thread driving block to move to a preset positioning point, the elastic assembly applies acting force to the first sub-block and the second sub-block to enable the first sub-block and the second sub-block to be opened and closed. The thread driving block in the transmission module can not continue to transmit after reaching the positioning point, thereby realizing the purpose of over-force protection.
Description
Technical Field
The application relates to the field of mechanical protection, in particular to a transmission module with a protection function and an electronic device using the same.
Background
In the field of projectors, the lens of most projector products can move along the horizontal axis and/or the vertical axis, but the moving range is limited.
In the prior art, a user can control the movement of the projection lens by adjusting the transmission member, however, during the adjustment process, the user cannot clearly know whether the transmission member has reached the limited area, and when the transmission member reaches the limited area, if the user continues to apply force, the transmission module and even the lens module may be damaged.
Therefore, there is a need to design a novel transmission module with protection function and an electronic device using the same to overcome the above-mentioned drawbacks.
Disclosure of Invention
The application aims to provide a transmission module with a protection function and an electronic device using the transmission module, wherein a thread driving block in the transmission module cannot continuously transmit after reaching a positioning point, so that the purpose of over-force protection is realized.
In order to achieve the above object, the present application provides a transmission module with a protection function, which includes: the transmission screw rod is provided with a first end and a second end which are opposite, and the first end and the second end are arranged along the axial direction of the transmission screw rod; a screw driving block including a first block and a second block combined to form an internal screw portion having an internal thread; the transmission screw is arranged in the internal thread part to drive the thread driving block to move along the axial direction, the first sub-block comprises a first connecting part, the second sub-block comprises a second connecting part, the first connecting part and the second connecting part are connected through an elastic component, and when the transmission screw rotates to enable the thread driving block to move to a preset positioning point, the elastic component applies acting force to the first sub-block and the second sub-block so as to enable the first sub-block and the second sub-block to be opened and closed.
Preferably, the transmission module further includes: and the positioning frame is used for accommodating the thread driving block, and the positioning point is arranged corresponding to the upper bottom surface or the lower bottom surface of the positioning frame.
Preferably, the transmission module further includes: and the positioning stop block is arranged at a position corresponding to the positioning stop block.
Preferably, when the screw driving block moves to the positioning point, the screw driving block abuts against the upper bottom surface, the lower bottom surface or the positioning stop block of the positioning frame, so that the first block and the second block open and close along the elastic component.
Preferably, the first connecting part is provided with a first through hole group, and the second connecting part is provided with a second through hole group; the first connecting portion and the second connecting portion are clamped with each other, and the first through hole group and the second through hole group are communicated with each other to form a mounting hole for mounting the elastic assembly.
Preferably, the elastic component comprises a torsion spring; the torsion spring comprises a bending section in the middle and straight line sections at two ends, and a through hole penetrates through the bending section in the stretching direction.
Preferably, the elastic assembly further comprises a mounting post, and the mounting post is assembled in the through hole of the torsion spring.
Preferably, the straight line segments at two ends of the torsion spring are respectively abutted against the first block and the second block to apply acting force to the first block and the second block.
The present application still further provides an electronic device, comprising: a lens module; as mentioned above, the screw driving block of the transmission module is connected to the lens module to drive the lens module to move.
Preferably, the electronic device is a projector.
Compared with the prior art, the transmission module that this application provided sets up screw thread drive block components of a whole that can function independently, connects first piecemeal and the second piecemeal that components of a whole that can function independently set up in this screw thread drive block by elastic component again for screw thread drive block is when reacing the setpoint, and first piecemeal and second piecemeal receive elastic component's drive power to open and shut the action, and then has avoided transmission module's damage.
Drawings
Fig. 1 is a schematic structural diagram of a transmission module according to an embodiment of the present disclosure;
fig. 2 is an exploded view of a transmission module according to an embodiment of the present disclosure.
Detailed Description
In order to further understand the purpose, structure, features and functions of the present application, the following embodiments are described in detail.
Certain terms are used throughout the description and following claims to refer to particular components. As one of ordinary skill in the art will appreciate, manufacturers may refer to a component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a transmission module 10 according to an embodiment of the present disclosure, and fig. 2 is an exploded schematic diagram of the transmission module 10 according to the embodiment of the present disclosure. As shown in fig. 1, the transmission module 10 includes: a drive screw 100 and a screw drive block 200; the drive screw 100 has a first end and a second end opposite to each other, the first end and the second end are arranged along the axial direction of the drive screw 100, the screw driving block 200 includes a first block 201 and a second block 202, and the first block 201 and the second block 202 are combined to form an internal screw thread part with an internal thread; the driving screw 100 is disposed in the internal thread portion to drive the screw driving block 200 to move along the axial direction of the driving screw 100, the first sub-block 201 includes a first connecting portion 2010, the second sub-block 202 includes a second connecting portion 2020, the first connecting portion 2010 and the second connecting portion 2020 are connected through the elastic component 300, and when the driving screw 100 rotates to enable the screw driving block 200 to move to a predetermined positioning point, the elastic component 300 applies an acting force to the first sub-block 201 and the second sub-block 202 to enable the first sub-block 201 and the second sub-block 202 to open and close.
In the specific implementation, when the screw driving block 200 does not move to the predetermined position, the elastic assembly 300 applies a pressing force to the first block 201 and the second block 202, so that the first block 201 and the second block 202 form an internal thread portion with a complete thread, and when the screw driving block 200 moves to the predetermined position, the screw driving block 200 is limited by the positioning point, which may be an acting force from the positioning point in a direction opposite to the direction of the rotating force, and after the elastic assembly 300 receives the acting force, the elastic assembly 300 further applies an acting force to the first block 201 and the second block 202, so that the opening and closing operation is completed instantly, that is, when the screw driving block 200 moves to the positioning point, if the user continues to rotate the transmission screw 100, the screw driving block 200 receives a reverse acting force from the positioning point, and then the elastic assembly 300 is elastically deformed, and the acting force is generated, so that the first block 201 and the second block 202 are separated, at this time, the driving screw 100 cannot rotate continuously, the screw driving block 200 is not subjected to the above-mentioned reverse acting force, and the first block 201 and the second block 202 are restored to the tightly fitted state, so that the opening and closing operation is completed.
In one embodiment, the screw driving block 200 includes a first block 201 and a second block 202, which are separately arranged, and when the first block 201 and the second block 202 are assembled, they form an internal screw portion (i.e., a threaded hole) having a complete internal thread. Preferably, the first block 201 and the second block 202 are two corresponding mating pieces, that is, the first block 201 and the second block 202 each have a corresponding half thread to form a threaded hole with a complete thread after assembly, and the above-mentioned drive screw 100 is disposed in the threaded hole. Further, the user rotates the first end of the drive screw 100 to drive the screw driving block 200. For example, when the user rotates the driving screw 100 clockwise, the screw driving block 200 moves upward relative to the driving screw 100, and conversely, when the user rotates the driving screw 100 counterclockwise, the screw driving block 200 moves downward relative to the driving screw 100, and when the screw driving block 200 moves to a predetermined positioning point, the elastic member 300 drives the first block section 201 and the second block section 202 to open and close. It can be understood that, even if the user continues to rotate the transmission screw 100, since the screw driving block 200 is restricted by the positioning point, it cannot move upwards or downwards, however, since the first block 201 and the second block 202 are separately arranged and connected by the elastic component 300, when the user rotates the transmission screw 100, and the screw driving block 200 receives the reverse acting force opposite to the resultant rotational force, the first block 201 and the second block 202 can open and close by the elastic component 300, so as to achieve the effect of protecting the inner thread and the components such as the transmission screw 100, and avoid the damage of the transmission module 10. For example, the positioning point may be disposed between the first end of the drive screw 100 and the thread driving block 200.
In one embodiment, the transmission module 10 further includes: a positioning frame (not shown) for accommodating the screw driving block 200, wherein the screw driving block 200 can be disposed in the positioning frame, and the positioning points can be disposed corresponding to the upper bottom surface or the lower bottom surface of the positioning frame, i.e., when the screw driving block 200 moves to the upper bottom surface or the lower bottom surface of the positioning frame, the screw driving block 200 abuts against the upper bottom surface or the lower bottom surface, and further the screw driving block 200 is restricted from moving continuously by the upper bottom surface or the lower bottom surface of the positioning frame.
In another embodiment, the transmission module 10 further includes: a positioning block (not shown), which may be disposed corresponding to a position of the positioning block, for example, the positioning block may be disposed substantially above the screw driving block 200, as long as it can play a role of limiting the screw driving block 200 to move continuously at the positioning point, which is not limited in this application.
It can be understood that when the screw driving block 200 moves to the positioning point, the screw driving block 200 should abut against the upper bottom surface or the lower bottom surface of the positioning frame, or abut against the positioning stopper, and the above-mentioned various arrangement manners can achieve the purpose of limiting the screw driving block 200 to move continuously at the positioning point.
Referring to fig. 2, a first connection portion 2010 of the first sub-block 201 is provided with a first through hole group 2011, and a second connection portion 2020 of the second sub-block 202 is provided with a second through hole group 2021; when the first connecting portion 2010 and the second connecting portion 2020 are engaged with each other, the first through hole set 2011 and the second through hole set 2021 are communicated with each other to form a mounting hole for mounting the elastic element 300.
Preferably, the elastic assembly 300 includes a torsion spring 301 and a mounting post 302; the torsion spring 301 specifically includes a middle bending section and two end straight sections, wherein a through hole penetrates through the bending section in the stretching direction, and the mounting post 302 is correspondingly assembled in the through hole of the bending section in the torsion spring 301. It should be noted that the elastic component 300 can also be composed of other elastic members (e.g., springs or elements with other structures), as long as they can satisfy the same effect, and the application is not limited thereto. Specifically, the dimension of the mounting post 302 matches the dimension of the mounting hole, and as shown in fig. 1 and 2, the second connecting portion 2020 is engaged with the engaging space formed by the first connecting portion 2010, and after the first connecting portion 2010 and the second connecting portion 2020 are engaged with each other, the second connecting portion 2020 leaves a space for mounting the torsion spring 301. The curved section surrounds the mounting post 302, and the two straight sections respectively abut against the first segment 201 and the second segment 202. Due to the arrangement, when the thread driving block 200 is limited by a positioning frame, a positioning block or other means, if the thread driving block 200 is subjected to a reverse acting force opposite to the direction of the resultant force of rotation, the straight line segments at the two ends of the torsion spring 301 apply force to the first block segment 201 and the second block segment 202 respectively, so that the transmission screw 100 idles relative to the thread driving block 200, thereby ensuring that the transmission module 10 cannot be broken or damaged by external force, and playing a role in over-force protection.
The present application further provides an electronic device, wherein the electronic device uses the above-mentioned transmission module 10, and the electronic device further includes a lens module, and the transmission module 10 is connected to the lens module to adjust a lens in the lens module through the transmission screw 100. For example, the electronic device may be a projector.
To sum up, this application is through rotating drive screw 100 in order to adjust the position of screw thread drive block 200, and screw thread drive block 200 drives the lens module rather than being connected. Further, when the screw driving block 200 moves to the predetermined positioning point, because it is abutted against the positioning frame or the positioning block located at the positioning point, after it receives the reverse acting force opposite to the direction of the resultant force of rotation, the elastic component 300 makes the first sub-block 201 and the second sub-block 202 perform the opening and closing action, and the transmission screw 100 idles relative to the screw driving block 200, thereby ensuring that the transmission module 10 cannot be broken or damaged by external force, playing the role of over-force protection, and simultaneously indirectly protecting the lens module connected to the screw driving block 200. The application has the advantages of simple structure, low cost and strong practicability.
The present application has been described in relation to the above embodiments, which are only examples for implementing the present application. It should be noted that the disclosed embodiments do not limit the scope of the present application. Rather, changes and modifications may be made without departing from the spirit and scope of the present application and shall fall within the scope of the appended claims.
Claims (6)
1. The utility model provides a transmission module with protect function which characterized in that, this transmission module includes:
the transmission screw rod is provided with a first end and a second end which are opposite, and the first end and the second end are arranged along the axial direction of the transmission screw rod;
a screw driving block including a first block and a second block combined to form an internal screw portion having an internal thread;
the positioning frame is used for accommodating the thread driving block, and the positioning point is arranged corresponding to the upper bottom surface or the lower bottom surface of the positioning frame;
the positioning stop block is arranged corresponding to the position of the positioning stop block;
wherein the transmission screw rod is arranged in the internal thread part to drive the thread driving block to move along the axial direction, the first sub-block includes a first connecting portion, the second sub-block includes a second connecting portion, the first connecting portion has a first through hole set, the second connecting part is provided with a second through hole group, the first connecting part and the second connecting part are mutually clamped, and the first through hole set and the second through hole set are communicated with each other to form a mounting hole for mounting the elastic component, the first connecting part and the second connecting part are connected through the elastic component, when the transmission screw rod rotates to enable the thread driving block to move to a preset positioning point, the screw driving block is abutted against the upper bottom surface, the lower bottom surface or the positioning stop block of the positioning frame, the elastic component applies acting force to the first block and the second block so as to enable the first block and the second block to open and close along the elastic component.
2. The transmission module with protection function of claim 1, wherein the elastic component comprises a torsion spring;
the torsion spring comprises a bending section in the middle and straight line sections at two ends, and a through hole penetrates through the bending section in the stretching direction.
3. The transmission module with protection function as claimed in claim 2, wherein the elastic component further comprises a mounting post, and the mounting post is fitted in the through hole of the torsion spring.
4. The transmission module as claimed in claim 2, wherein the straight segments at two ends of the torsion spring abut against the first segment and the second segment respectively to exert an acting force on the first segment and the second segment.
5. An electronic device, comprising:
a lens module;
the transmission module according to any one of claims 1 to 4, wherein the screw driving block of the transmission module is connected to the lens module to move the lens module.
6. The electronic device of claim 5, wherein the electronic device is a projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508701.9A CN110388429B (en) | 2019-06-13 | 2019-06-13 | Transmission module with protection function and electronic device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508701.9A CN110388429B (en) | 2019-06-13 | 2019-06-13 | Transmission module with protection function and electronic device using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110388429A CN110388429A (en) | 2019-10-29 |
| CN110388429B true CN110388429B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910508701.9A Expired - Fee Related CN110388429B (en) | 2019-06-13 | 2019-06-13 | Transmission module with protection function and electronic device using same |
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| CN (1) | CN110388429B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115182975A (en) * | 2021-07-02 | 2022-10-14 | 金华市胜昌科技股份有限公司 | Mistake proofing self preservation protects device |
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| CN2403245Y (en) * | 1999-06-23 | 2000-11-01 | 张善臻 | Automatic dough-paring machine |
| JP2002191693A (en) * | 2000-12-26 | 2002-07-09 | Ube Ind Ltd | Pressing device |
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| JP2014092167A (en) * | 2012-10-31 | 2014-05-19 | Victaulic Co Of Japan Ltd | Expansion joint |
| DE102014221597A1 (en) * | 2014-10-23 | 2016-04-28 | Schaeffler Technologies AG & Co. KG | Spindle nut for an adjustment device |
| RU166439U1 (en) * | 2016-03-22 | 2016-11-27 | Ильшат Анварович Рафиков | FASTENING FIXED NUT FOR FLEXIBLE ROTATOR ROTARY TROLLEY |
| CN207131821U (en) * | 2017-09-07 | 2018-03-23 | 新乡市凯林机械制造有限公司 | A kind of steering gear screw rod |
| CN207731007U (en) * | 2018-01-09 | 2018-08-14 | 昆明全波红外科技有限公司 | A kind of screw thread vice mechanism lens focusing device |
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| US5282392A (en) * | 1991-01-31 | 1994-02-01 | Chaolai Fan | Synchro-clutching screw-and-nut mechanism |
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| JP2005215080A (en) * | 2004-01-27 | 2005-08-11 | Olympus Corp | Lens driving device |
| US20080080949A1 (en) * | 2006-09-18 | 2008-04-03 | Jinn-Yi Deng | Spring toggle |
| CN107065404B (en) * | 2017-02-24 | 2019-01-18 | 苏州佳世达光电有限公司 | A kind of camera lens adjustment mould group and projection arrangement |
| CN108397146B (en) * | 2018-03-15 | 2019-09-24 | 中煤科工集团西安研究院有限公司 | Unscrewing device and its application method with angled compensation mechanism |
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2019
- 2019-06-13 CN CN201910508701.9A patent/CN110388429B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2403245Y (en) * | 1999-06-23 | 2000-11-01 | 张善臻 | Automatic dough-paring machine |
| JP2002191693A (en) * | 2000-12-26 | 2002-07-09 | Ube Ind Ltd | Pressing device |
| CN102235474A (en) * | 2010-03-04 | 2011-11-09 | 文卡德埃尔赛弗公司 | Motor mechanism |
| JP2014092167A (en) * | 2012-10-31 | 2014-05-19 | Victaulic Co Of Japan Ltd | Expansion joint |
| DE102014221597A1 (en) * | 2014-10-23 | 2016-04-28 | Schaeffler Technologies AG & Co. KG | Spindle nut for an adjustment device |
| RU166439U1 (en) * | 2016-03-22 | 2016-11-27 | Ильшат Анварович Рафиков | FASTENING FIXED NUT FOR FLEXIBLE ROTATOR ROTARY TROLLEY |
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| Publication number | Publication date |
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| CN110388429A (en) | 2019-10-29 |
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