Symmetrical hand-cranking gear reducer core device
The symmetrical design of the gear reducer core device solves the problems of high production cost and low efficiency in the existing technology, reduces the number of parts and makes them detachable and replaceable, thereby reducing manufacturing costs and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2026-03-31
AI Technical Summary
The existing left and right hand-cranked gear reducers on the market have different left and right side plates and connecting plates, resulting in high manufacturing costs and low efficiency.
A symmetrical hand-cranked gear reducer core device is designed, which adopts two symmetrically arranged end plates and two side plates. The worm shaft meshes with the first stage driven helical gear for transmission, and the first stage driven helical gear meshes with the second stage driven helical gear for transmission. The components are fixedly connected by locking screws, thereby reducing the number of components and making them detachable and replaceable.
It reduces raw material and processing costs, improves production efficiency, facilitates the disassembly and replacement of parts, and adapts to different customer needs.
Smart Images
Figure CN224064799U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gear reducer technology, specifically a symmetrical hand-cranked gear reducer core device. Background Technology
[0002] Gear reducers are suitable for high-precision, low-wear applications requiring manual operation and high-torque bidirectional output, such as window openers and emergency devices. Currently, gear reducers used in the window opener industry are broadly classified into two categories: electric geared motor reducers and hand-cranked reducers. Hand-cranked reducers are often used in pairs, so existing left and right hand-cranked reducers have different left and right side plates and connecting plates, significantly increasing manufacturing costs and reducing production efficiency.
[0003] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: the existing left and right hand-cranked gear reducer mechanisms used in window opener equipment on the market are mostly equipped with different left and right side plates and connecting plates, which greatly increases the cost of manufacturing and reduces production efficiency. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a symmetrical hand-cranked gear reducer core device, which has the advantages of easy disassembly and replacement of the worm shaft, first-stage driven helical gear, second-stage driven helical gear, third-stage driving gear, and third-stage driven gear according to customer needs, making it more practical. This solves the problem that most existing hand-cranked gear reducer cores used in window opener equipment on the market have different left and right side plates and connecting plates, which greatly increases the cost of manufacturing and reduces production efficiency.
[0005] To achieve the above objectives, this application provides the following technical solution: a symmetrical hand-cranked gear reducer core device, comprising a mounting frame, the mounting frame comprising two symmetrically arranged end plates and two side plates, a worm shaft being disposed between the two inner surfaces of the two end plates, and a first-stage driven helical gear, a first rotating shaft, and a second rotating shaft being sequentially disposed between the two inner surfaces of the two side plates, the worm shaft being meshed with the first-stage driven helical gear, a second-stage driven helical gear and a third-stage driving gear being fixedly connected to the outside of the first rotating shaft, the first-stage driven helical gear being meshed with the second-stage driven helical gear, and a third-stage driven gear being fixedly connected to the outside of the second rotating shaft, the third-stage driven gear being meshed with the third-stage driving gear.
[0006] Both ends of the worm shaft are fixedly connected to the outside of the two end plates, with one of the input shafts connected to an external power source. Two first bearing holes are symmetrically opened on the inner sidewalls of the two side plates. A first ball flange bearing and a copper-based oil-impregnated flange bearing are fixedly installed inside the two first bearing holes. Both ends of the second rotating shaft are connected to the first ball flange bearing and the copper-based oil-impregnated flange bearing by interference fit. An output shaft is fixedly connected to one end of the second rotating shaft. One end of the output shaft passes through the copper-based oil-impregnated flange bearing and extends to the outside of the side plate, where a sliding arm block is fixedly connected.
[0007] Through the above scheme, the worm shaft meshes with the first-stage driven helical gear while the first-stage driven helical gear meshes with the second-stage driven helical gear. The first-stage driven helical gear meshes with both the worm shaft and the second-stage driven helical gear, reducing the number of parts in this utility model. It also eliminates the need for secondary processing to create double gears, thus reducing the cost of this utility model and improving production efficiency. By setting two symmetrical end plates and two side plates, and with all dimensions identical except for the two first bearing holes on the inner side walls of the two side plates, compared with the prior art which sets different left and right side plates and connecting plates, the manufacturing cost of raw materials and the complexity of processing can be greatly reduced.
[0008] Furthermore, adjacent end plates and side plates are fixedly connected by locking screws.
[0009] The above solution, which uses screws for fixing the connection, makes disassembly easier.
[0010] Furthermore, the external power source is a hand crank.
[0011] With the above solution, when the operating environment is limited, a hand crank can be used as an external power source to drive the input shaft and worm shaft to rotate.
[0012] Furthermore, the external power source is an electric motor.
[0013] The above approach, where conditions permit, utilizes an electric motor as an external power source, which is more efficient and saves time and effort.
[0014] Furthermore, two sets of second bearing holes of the same size are symmetrically opened on the inner surfaces of the two side plates. Two sets of iron-based oil-impregnated bearings are fixedly installed inside the two sets of second bearing holes. The first stage driven helical gear and the first rotating shaft are respectively connected to the two sets of iron-based oil-impregnated bearings by interference fit.
[0015] The above solution reduces manufacturing costs by using multiple second bearing holes of the same size. The interference fit connection is a detachable connection method, which facilitates replacement.
[0016] Furthermore, two identical third bearing holes are symmetrically formed on the inner sidewalls of the two end plates. Two second ball flange bearings are fixedly installed inside the two third bearing holes. The two ends of the worm shaft are respectively connected to the two second ball flange bearings by interference fit.
[0017] The above solution allows for the reduction of manufacturing costs by using a third bearing hole of the same size, and the interference fit connection facilitates the replacement of the worm shaft.
[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0019] 1. This symmetrical hand-cranked gear reducer core device, by setting two completely symmetrical end plates and two side plates, and except for the two first bearing holes opened in the inner side walls of the two side plates, all other dimensions are the same. Compared with the existing technology that sets different left and right side plates and connecting plates, it can greatly reduce the manufacturing cost of raw materials and the complexity of processing.
[0020] 2. This symmetrical hand-cranked gear reducer core device, by setting up components such as a worm shaft, a first-stage driven helical gear, and a second-stage driven helical gear, allows the worm shaft to mesh with the first-stage driven helical gear and simultaneously the first-stage driven helical gear to mesh with the second-stage driven helical gear. The first-stage driven helical gear also meshes with both the worm shaft and the second-stage driven helical gear, reducing the number of parts in this utility model and eliminating the need for secondary processing to create double gears, thus reducing the cost of this utility model and improving production efficiency.
[0021] 3. This symmetrical hand-cranked gear reducer mechanism, through the setting of components such as locking screws, a first-stage driven helical gear, a first rotating shaft, and a second rotating shaft, is fixed to the end plate and side plate by the locking screws. The first-stage driven helical gear, the first rotating shaft, and the second rotating shaft are installed with an interference fit. It allows for easy disassembly and replacement of the worm shaft, the first-stage driven helical gear, the second-stage driven helical gear, the third-stage driving gear, and the third-stage driven gear according to customer needs, making it more practical. Attached Figure Description
[0022] Figure 1 This is a first-view perspective perspective view of an embodiment of this application;
[0023] Figure 2 This is a second-view perspective perspective view of an embodiment of this application;
[0024] Figure 3 This is an exploded view of an embodiment of this application;
[0025] Figure 4 This is a top view of an embodiment of this application.
[0026] In the picture:
[0027] 1. End plate; 2. Side plate; 3. Worm shaft; 4. First stage driven helical gear; 5. First rotating shaft; 501. Second stage driven helical gear; 502. Third stage driving gear; 6. Second rotating shaft; 601. Third stage driven gear; 7. Input shaft; 8. First ball flange bearing; 9. Copper-based oil-impregnated flange bearing; 10. Output shaft; 11. Locking screw; 12. Iron-based oil-impregnated bearing; 13. Second ball flange bearing. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment of a symmetrical hand-cranked gear reducer core device includes a mounting frame, which includes two end plates 1 and two side plates 2 symmetrically arranged. A worm shaft 3 is arranged between the two inner surfaces of the two end plates 1. A first-stage driven helical gear 4, a first rotating shaft 5, and a second rotating shaft 6 are arranged sequentially between the two inner surfaces of the two side plates 2. The worm shaft 3 and the first-stage driven helical gear 4 are meshed together. A second-stage driven helical gear 501 and a third-stage driving gear 502 are fixedly connected to the outside of the first rotating shaft 5. The first-stage driven helical gear 4 and the second-stage driven helical gear 501 are meshed together. A third-stage driven gear 601 is fixedly connected to the outside of the second rotating shaft 6. The third-stage driven gear 601 and the third-stage driving gear 502 are meshed together.
[0030] Both ends of the worm shaft 3 extend through the two end plates 1 and are fixedly connected to the input shaft 7. One of the input shafts 7 is connected to an external power source. Two first bearing holes are symmetrically opened on the inner side walls of the two side plates 2. A first ball flange bearing 8 and a copper-based oil-impregnated flange bearing 9 are fixedly installed inside the two first bearing holes. Both ends of the second rotating shaft 6 are connected to the first ball flange bearing 8 and the copper-based oil-impregnated flange bearing 9 by interference fit. One end of the second rotating shaft 6 is fixedly connected to the output shaft 10. One end of the output shaft 10 passes through the copper-based oil-impregnated flange bearing 9 and extends to the outside of the side plate 2 and is fixedly connected to the sliding arm block.
[0031] like Figures 1 to 3As shown, two third bearing holes of the same size are symmetrically opened on the inner sidewalls of the two end plates 1. Two second ball flange bearings 13 are fixedly installed inside the two third bearing holes. The two ends of the worm shaft 3 are respectively connected to the two second ball flange bearings 13 by interference fit.
[0032] Two sets of second bearing holes of the same size are symmetrically opened on the inner surface of the two side plates 2. Two sets of iron-based oil-impregnated bearings 12 are fixedly installed inside the two sets of second bearing holes. The two ends of the first stage driven helical gear 4 and the first rotating shaft 5 are respectively connected to the two sets of iron-based oil-impregnated bearings 12 by interference fit.
[0033] The external power source is an electric motor.
[0034] The external power source is a hand crank.
[0035] The adjacent end plate 1 and side plate 2 are fixedly connected by locking screws 11.
[0036] Further explanation is needed: while the worm shaft 3 meshes with the first-stage driven helical gear 4, the first-stage driven helical gear 4 meshes with the second-stage driven helical gear 501. The first-stage driven helical gear 4 simultaneously meshes with the worm shaft 3 and the second-stage driven helical gear 501, reducing the number of parts in this utility model and eliminating the need for secondary processing to create a double gear. This reduces the cost of the utility model and improves production efficiency. By setting two symmetrical end plates 1 and two side plates 2, and except for the two first bearing holes opened on the inner sidewalls of the two side plates 2, all other dimensions are the same. Compared with the prior art which sets different left and right side plates 2 and connecting plates, this can greatly reduce the manufacturing cost of raw materials and the complexity of processing.
[0037] By opening a third bearing hole of the same size, the processing and manufacturing cost can be reduced. The interference fit connection makes it easy to replace the worm shaft 3. Similarly, opening multiple second bearing holes of the same size can also reduce the processing and manufacturing cost. The interference fit connection is a detachable connection method, which is convenient for replacement. When conditions permit, a motor can be used as an external power source, which is more efficient and saves time and effort. When the usage environment is limited, a hand crank can be used as an external power source to drive the input shaft 7 and the worm shaft 3 to rotate. The locking screw 11 fixes the end plate 1 and the side plate 2, which makes it easier to install and remove the end plate 1 and the side plate 2.
[0038] This embodiment of a symmetrical hand-cranked gear reducer core device, by setting two completely symmetrical end plates and two side plates, and except for the two first bearing holes opened in the inner side walls of the two side plates, all other dimensions are the same. Compared with the prior art which sets different left and right side plates and connecting plates, it can greatly reduce the manufacturing cost of raw materials and the complexity of processing. By setting components such as worm shaft, first stage driven helical gear and second stage driven helical gear, the worm shaft meshes with the first stage driven helical gear and the first stage driven helical gear meshes with the second stage driven helical gear. The first stage driven helical gear meshes with the worm shaft and the second stage driven helical gear at the same time, which reduces the number of parts in this utility model and eliminates the need for secondary processing to make double gears, thus reducing the cost of this utility model and improving production efficiency.
[0039] It should be noted that by setting up components such as locking screws, first-stage driven helical gear, first rotating shaft and second rotating shaft, and fixing the end plate and side plate with the interference fit of the locking screws, the first-stage driven helical gear, first rotating shaft and second rotating shaft can be easily disassembled and replaced according to customer needs, making it more practical.
[0040] The working principle of the above embodiment is as follows: First, the first stage driven helical gear 4, the first rotating shaft 5, and the second rotating shaft 6 are installed between the two side plates 2. At this time, the first stage driven helical gear 4 and the second stage driven helical gear 501 are meshed. The second stage driven helical gear 501 can drive the third stage driving gear 502 to rotate. The third stage driving gear 502 meshes with the third stage driven gear 601. The rotation of the third stage driven gear 601 can drive the second rotating shaft 6 and the output shaft 10 fixedly connected to one end of the second rotating shaft 6 to rotate.
[0041] Next, the worm shaft 3 is installed between the two end plates 1, so that the worm shaft 3 is meshed with the first stage driven helical gear 4, and then the adjacent end plates 1 and side plates 2 are fixedly connected by the locking screws 11.
[0042] Next, an external power source is used to drive the input shaft 7 to rotate. The input shaft 7 drives the worm shaft 3, which meshes with the first-stage driven helical gear 4. The first-stage driven helical gear 4 meshes with the second-stage driven helical gear 501. The second-stage driven helical gear 501 drives the third-stage driving gear 502 to mesh with the third-stage driven gear 601. The third-stage driven gear 601 drives the second rotating shaft 6 and the output shaft 10, which is fixedly connected to one end of the second rotating shaft 6, to rotate. The output shaft 10 can then drive the sliding arm block.
[0043] Finally, if you want to replace the worm shaft 3, the first stage driven helical gear 4, the second stage driven helical gear 501, the third stage driving gear 502, and the third stage driven gear 601, unscrew the locking screw 11 to separate the end plate 1 from the side plate 2, and then remove the worm shaft 3, the first stage driven helical gear 4, the first rotating shaft 5, and the second rotating shaft 6. You can replace them according to the customer's needs.
[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A symmetrical hand-wound gear reduction movement comprising a mounting frame, characterized in that: The mounting frame comprises two end plates (1) and two side plates (2) arranged symmetrically, a worm shaft (3) is arranged between the inner surfaces of the two end plates (1), a first-stage driven bevel gear (4), a first rotating shaft (5) and a second rotating shaft (6) are sequentially arranged between the inner surfaces of the two side plates (2), the worm shaft (3) is in meshing connection with the first-stage driven bevel gear (4), the first rotating shaft (5) is externally sleeved with a second-stage driven bevel gear (501) and a third-stage driving gear (502) fixedly connected, the first-stage driven bevel gear (4) is in meshing connection with the second-stage driven bevel gear (501), the second rotating shaft (6) is externally sleeved with a third-stage driven gear (601) fixedly connected, and the third-stage driven gear (601) is in meshing connection with the third-stage driving gear (502). The two ends of the worm shaft (3) are externally fixedly connected with input shafts (7) extending through the two end plates (1), one of the input shafts (7) is connected with an external power source, two first bearing holes are symmetrically formed in the inner side walls of the two side plates (2), first ball flange bearings (8) and copper-based oil-containing flange bearings (9) are fixedly installed in the two first bearing holes, the two ends of the second rotating shaft (6) are connected with the first ball flange bearings (8) and the copper-based oil-containing flange bearings (9) through interference fit, an output shaft (10) is fixedly connected to one end of the second rotating shaft (6), and the output shaft (10) is externally fixedly connected with a sliding arm block by extending through the copper-based oil-containing flange bearing (9) and the side plate (2).
2. Symmetrical hand gear reducer movement according to claim 1, characterized in that: The adjacent end plates (1) and side plates (2) are fixedly connected through locking screws (11).
3. The symmetrical pinion hand gear reducing movement device according to claim 1, wherein: The external power source is a hand wheel.
4. The symmetrical pinion hand gear reducing movement device according to claim 1, wherein: The external power source is an electric motor.
5. The symmetrical pinion hand gear reducing movement device according to claim 1, wherein: Two groups of second bearing holes with the same size are symmetrically formed in the inner surfaces of the two side plates (2), and two groups of iron-based oil-containing bearings (12) are fixedly installed in the two groups of second bearing holes, and the two ends of the first-stage driven bevel gear (4) and the first rotating shaft (5) are connected with the two groups of iron-based oil-containing bearings (12) through interference fit.
6. The symmetrical pinion hand gear reducing movement device according to claim 2, wherein: Two third bearing holes with the same size are symmetrically formed in the inner side walls of the two end plates (1), and two second ball flange bearings (13) are fixedly installed in the two third bearing holes, and the two ends of the worm shaft (3) are connected with the two second ball flange bearings (13) through interference fit.