Stop mechanism for gear transmission
By designing the stop mechanism of gear transmission, the meshing and braking of the stop structure and the circular web plate are used to solve the space limitation and complexity of the tightening mechanism in mechanical assembly, and the rapid and simple fixation in a limited space is achieved Torque assembly and the torque can be adjusted as needed.
Patent Information
- Application Number
- CN202421270486.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-06-05
AI Technical Summary
In mechanical assembly, the assembly internal structure is complex and the operating space is small, which makes it impossible to assist with assembly with conventional tightening mechanism tools, especially in a limited space, to quickly tighten and assemble threads of the same torque in large quantities in a large number of threads of the same torque, and the stop mechanism is complex. , it is difficult to achieve on-site assembly.
A gear transmission stop mechanism is designed, including a transmission gear pair, a stop structure and an outer cover. The stop structure meshes with the transmission gear through the driving gear, and uses external force to drive the driving gear to drive the transmission gear to rotate, and the stop structure is in conflict. The circular web plate forms brakes, thereby achieving fixed torque assembly, suitable for assembly where the tightening position is not in the same space.
It realizes the fast and simple completion of fixed torque assembly of components in complex operating space, simplifies the assembly process, and adjusts the torque size by adjusting the limit block position, which is suitable for thread assembly of large batches of the same torque.
Smart Images
Figure CN222315864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical assembly, in particular to the field of a gear transmission stop mechanism. Background Art
[0002] At present, in the field of mechanical assembly, the internal structure of the assembly is often complicated and the operating space is small, which makes it impossible to use conventional tightening mechanism tools for auxiliary assembly during assembly, and it is even more impossible to quickly tighten and assemble a large number of threads with the same torque in a limited operating space. At the same time, the assembly of the stop mechanism is also very complicated, which cannot be realized in situations where on-site assembly is required. The present utility model is intended to solve the above problems. Utility Model Content
[0003] In order to overcome the shortcomings of the prior art, the utility model provides a gear-driven stopping mechanism, comprising a transmission gear pair, a stopping structure that contacts the transmission gear pair, and an outer cover covering the outer side of the transmission gear pair and fixedly connected to the transmission gear pair, wherein the stopping structure is defined between the outer cover and the transmission paper wheel pair, wherein the transmission gear pair comprises a driving gear and a transmission gear pair meshing with the driving gear, wherein the driving gear comprises two circular webs perpendicular to the axial direction thereof, wherein one of the circular webs extends out of the outer cover in the axial direction, and wherein the stopping structure contacts the other circular web in the external tangent direction and forms a brake.
[0004] Preferably, the stopping structure includes a positioning column connected to the outer cover by interference fit, an elastic arm, and a limit block fixedly connected to one end of the elastic arm, the other end of the elastic arm is defined between the positioning column and the outer cover, one end face of the limit block is in conflict with the external tangent direction of the web, and the angle between the elastic arm and the limit block is acute.
[0005] Preferably, the radius of the circular web gradually decreases along one side of one radius toward the other side, and the outer sectional surface of the circular web forms a step at this radius.
[0006] Preferably, one end of the elastic arm close to the positioning post is provided with a limiting portion twisted into an arc shape with a diameter smaller than that of the positioning post, and the limiting portion is defined between the positioning post and the outer cover.
[0007] Preferably, the outer cover comprises an upper cover and a lower cover, the transmission gear pair is defined between the upper cover and the lower cover, the upper cover and the lower cover are connected by pins, the lower cover is provided with a space 1 for accommodating the transmission gear pair, a space 2 communicating with the space 1 and for accommodating the stop structure, a portion of the positioning column is connected to the upper cover by interference fit, and a limiting portion of the elastic arm is defined between the positioning column and the lower cover.
[0008] Preferably, a circular positioning protrusion is provided at one end of the limiting block away from the circular web, and a limiting hole for limiting the circular positioning protrusion is provided at the bottom of the second space.
[0009] The technical solution adopted by the utility model to solve its technical problems is: a gear transmission stop mechanism, the parts to be tightened are limited in the transmission gear pair, the external force drives the driving gear to rotate, thereby driving the transmission gear pair meshing with the driving gear to rotate, and then driving the parts to be rotated to complete the assembly of the parts, with the rotation of the driving gear, the stop structure contacts the outer section of the circular plate of the driving gear and forms a brake in the outer tangent direction, so that the driving gear no longer rotates, thereby achieving the purpose of assembling the parts with a fixed torque, thereby achieving the purpose of assembling the parts with a fixed torque even if the external force driving and the tightening position are not in the same space. The utility model can be assembled in time in the use occasion, the transmission gear pair is installed into the upper cover, half of the positioning column is interference fit with the upper cover, the limiting part of the elastic arm is placed on the positioning column, the end of the limit block contacts the outer section of the circular plate, and then the lower cover is assembled with the upper cover, the transmission gear pair is limited in the empty space one, the elastic arm and the limit block are limited in the empty space two, the limiting part of the elastic arm is fixed between the lower cover and the positioning column, and the whole assembly process is simple. In the utility model, according to the torque required by the installed parts, the step position of the limit block on the outer section of the circular plate in the reset state can be set to achieve the purpose of adjusting the torque. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The utility model is a schematic diagram of the overall structure of a gear-driven stop mechanism.
[0011] Figure 2 The utility model is a schematic diagram of the exploded structure of a gear-driven stop mechanism.
[0012] Figure 3 The utility model is a partial structural schematic diagram of a gear-driven stopping mechanism.
[0013] Figure 4 The utility model is a schematic diagram of a top view of a transmission gear pair and a stop structure of a gear transmission stop mechanism.
[0014] Figure 5 The utility model is a structural schematic diagram of a stop structure of a gear-driven stop mechanism.
[0015] Figure 6 The utility model is a structural schematic diagram of a driving gear of a gear transmission stop mechanism. DETAILED DESCRIPTION
[0016] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.
[0017] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present utility model. In addition, the terms "one", "two", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0018] Reference Figures 1 to 6 The utility model is implemented as follows: a gear-driven stopping mechanism comprises a transmission gear pair 1, a stopping structure 2 which conflicts with the transmission gear pair 1, and an outer cover 3 which covers the outer side of the transmission gear pair 1 and is fixedly connected to the transmission gear pair 1, wherein the stopping structure 2 is defined between the outer cover 3 and the transmission paper wheel pair, the transmission gear pair 1 comprises a driving gear 11, and a transmission gear pair 12 which meshes with the driving gear 11, the driving gear 11 comprises two circular webs 111 which are perpendicular to the axial direction thereof, wherein one of the circular webs 111 extends out of the outer cover 3 in the axial direction, and the stopping structure 2 conflicts with the other circular web 111 in the external tangent direction and forms a brake.
[0019] The parts to be tightened are confined in the transmission gear pair 12, and the external force drives the driving gear 11 to rotate, thereby driving the transmission gear pair 12 meshing with the driving gear 11 to rotate, and then driving the parts to be rotated to complete the assembly of the parts. As the driving gear 11 rotates, the stop structure 2 contacts the outer tangent surface of the circular web 111 of the driving gear 11 and forms a brake in the outer tangent direction, so that the driving gear 11 no longer rotates, thereby achieving the purpose of assembling the parts with a fixed torque. Thus, the purpose of assembling the parts with a fixed torque can be achieved even if the external force driving and the tightening position are not in the same space.
[0020] On the basis of the above embodiment, as a further preference, the stop structure 2 comprises a positioning column 21 connected to the outer cover 3 by interference fit, an elastic arm 22, and a limit block 23 fixedly connected to one end of the elastic arm 22, the other end of the elastic arm 22 is defined between the positioning column 21 and the outer cover 3, one end face of the limit block 23 is in conflict with the outer tangent direction of the web, and the angle between the elastic arm 22 and the limit block 23 is an acute angle. The end of the elastic arm 22 close to the positioning column 21 is provided with a limiting portion 221 twisted into an arc shape with a smaller diameter than the positioning column 21, and the limiting portion 221 is defined between the positioning column 21 and the outer cover 3.
[0021] The radius of the circular plate 111 gradually decreases from one side of one radius to the other side, and the outer section of the circular plate 111 forms a step 1111 at this radius. When in the braking state, the end of the limiting block abuts against the step 1111.
[0022] The outer cover 3 includes an upper cover 31 and a lower cover 32, the transmission gear pair 1 is defined between the upper cover 31 and the lower cover 32, the upper cover 31 and the lower cover 32 are connected by pins, the lower cover 32 is provided with a space 1 321 for accommodating the transmission gear pair 1, and a space 2 322 communicated with the space 1 321 and for accommodating the stop structure 2, part of the positioning column 21 is connected to the upper cover 31 by interference fit, the defining portion 221 of the elastic arm 22 is defined between the positioning column 21 and the lower cover 32, and the elastic arm 22 is backed against the inner wall of the space 2 322.
[0023] The end of the limit block 23 away from the circular plate 111 is provided with a circular positioning protrusion 231, and the bottom of the second space 322 is provided with a limiting hole 3221 for limiting the circular positioning protrusion 231. When the limit block 23 contacts the step 1111, the circular positioning protrusion 231 is limited in the limiting hole 3221.
[0024] When the utility model is in a reset state, the limit block 23 is at a non-step 1111 position on the outer section of the circular web 111. With the external force, the driving gear 11 rotates, so the circular web 111 rotates accordingly, and the limit block 23 abuts against the step 1111 and forms a brake, limiting the continued rotation of the driving gear 11, thereby achieving the purpose of tightening the installed components with a fixed torque each time the components are installed.
[0025] After the parts are installed, the driving gear 11 is reset by external force and the next tightening installation is carried out.
[0026] During the installation of parts, when the stop block 23 contacts the outer tangent surface of the circular web 111, since the circular web 111 is rotating, there is a reaction force on the stop block 23 during the rotation process, and the circular positioning protrusion 231 is limited in the limit hole 3221, ensuring that the reaction of the circular web 111 to the stop block 23 during the rotation will not affect the stability of the stop block 23. At the same time, the angle between the elastic arm 22 and the stop block 23 is acute, and the elastic arm 22 backs against the inner wall of the second space 322, thereby ensuring that the reaction of the circular web 111 to the stop block 23 during the rotation will not affect the stability of the elastic arm 22.
[0027] In the present invention, according to the torque required by the installed parts, the position of the step 1111 of the limit block 23 on the outer section of the circular plate 111 in the reset state can be set to achieve the purpose of adjusting the torque.
[0028] It should be noted that the utility model can be assembled in time when it is used. The transmission gear pair 1 is installed in the upper cover 31, half of the positioning column 21 is interference fit with the upper cover 31, the limiting portion 221 of the elastic arm 22 is placed on the positioning column 21, the end of the limit block 23 is in contact with the outer sectional surface of the circular web 111, and then the lower cover 32 is assembled with the upper cover 31. The transmission gear pair 1 is limited in the empty space 1 321, the elastic arm 22 and the limit block 23 are limited in the empty space 2 322, and the limiting portion 221 of the elastic arm 22 is fixed between the lower cover 32 and the positioning column 21. The whole assembly is simple.
[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A gear-driven stop mechanism, characterized in that The invention comprises a transmission gear pair (1), a stop structure (2) abutting against the transmission gear pair (1), and an outer cover (3) covering the outer side of the transmission gear pair (1) and fixedly connected to the transmission gear pair (1), wherein the stop structure (2) is defined between the outer cover (3) and the transmission paper wheel pair, and the transmission gear pair (1) comprises a driving gear (11) and a transmission gear pair (12) meshing with the driving gear (11), wherein the driving gear (11) comprises two circular webs (111) perpendicular to the axial direction thereof, wherein one of the circular webs (111) extends out of the outer cover (3) in the axial direction, and the stop structure (2) abuts against the other circular web (111) in the external tangent direction to form a brake.
2. A gear-driven stop mechanism as claimed in claim 1, characterized in that The stop structure (2) comprises a positioning column (21) connected to the outer cover (3) by interference fit, an elastic arm (22), and a limit block (23) fixedly connected to one end of the elastic arm (22); the other end of the elastic arm (22) is limited between the positioning column (21) and the outer cover (3); an end face of the limit block (23) is in contact with the outer tangent direction of the web; and the angle between the elastic arm (22) and the limit block (23) is an acute angle.
3. A gear-driven stop mechanism as claimed in claim 1, characterized in that The radius value of the circular web (111) gradually decreases from one side of one radius to the other side, and the outer section of the circular web (111) forms a step (1111) at this radius.
4. A gear-driven stop mechanism as claimed in claim 2, characterized in that One end of the elastic arm (22) close to the positioning column (21) is provided with a limiting portion (221) twisted into an arc shape with a diameter smaller than that of the positioning column (21); the limiting portion (221) is limited between the positioning column (21) and the outer cover (3).
5. A gear-driven stop mechanism as claimed in claim 4, characterized in that The outer cover (3) comprises an upper cover (31) and a lower cover (32); the transmission gear pair (1) is defined between the upper cover (31) and the lower cover (32); the upper cover (31) and the lower cover (32) are connected by pins; the lower cover (32) is provided with a first vacancy (321) for accommodating the transmission gear pair (1); and a second vacancy (322) communicating with the first vacancy (321) and for accommodating the stop structure (2); a portion of the positioning column (21) is connected to the upper cover (31) by interference fit; and a defining portion (221) of the elastic arm (22) is defined between the positioning column (21) and the lower cover (32).
6. A gear-driven stop mechanism as claimed in claim 5, characterized in that A circular positioning protrusion (231) is provided at one end of the limiting block (23) away from the circular web (111), and a limiting hole (3221) for limiting the circular positioning protrusion (231) is provided at the bottom of the second empty space (322).