Sheet metal type stroke feedback gear

Abstract

The utility model relates to a sheet metal type stroke feedback gear, and relates to the field of stroke feedback of electric actuating mechanisms. The device comprises a main shaft, a feedback rod, a worm gear, a sheet metal type feedback gear, a small bevel gear and an angular displacement sensor, the worm gear and the sheet metal type feedback gear are connected with the main shaft in a sleeving manner, and the worm gear and the sheet metal type feedback gear synchronously rotate and are relatively static in the rotating process; the small bevel gear is connected with the feedback rod in a sleeving manner, and the small bevel gear and the feedback rod synchronously rotate and are relatively static in the rotating process; the small bevel gear is meshed with the sheet metal type feedback gear; the axis corresponding to the main shaft is perpendicular to the axis corresponding to the feedback rod. The angular displacement sensor is used for measuring the angular displacement of the feedback rod; when the main shaft rotates, the metal plate type feedback gear and the main shaft move synchronously, the small bevel gear is driven to rotate, and then the feedback rod is driven to rotate. Large bevel gear parts with high product unit price and die price in the bevel gear pair are changed into metal plate forming, the machining efficiency is improved, and the finished product rate of the formed parts is high.

Description

Technical Field

[0001] The utility model relates to the field of stroke feedback of electric actuators, and particularly relates to a sheet metal type stroke feedback gear. Background Art

[0002] A stroke feedback gear is a device used to feedback the displacement amount in an electric actuator.

[0003] The existing stroke feedback gears of electric actuators usually adopt bevel gear pairs. The large bevel gear and the small bevel gear parts in the bevel gear pair are usually formed by machining or by casting with light alloy.

[0004] However, the machining time is long, the machining efficiency is low, and the part cost is high in machining; casting with light alloy requires a pair of expensive die-casting molds. At the same time, due to the casting process, there is a possibility that the blank is scrapped due to casting defects. Summary of the Invention

[0005] The utility model relates to a sheet metal type stroke feedback gear, which can improve the machining efficiency and the yield rate of formed parts. The device includes a main shaft, a feedback rod, a worm gear, a sheet metal type feedback gear, a small bevel gear and an angular displacement sensor;

[0006] The worm gear and the sheet metal type feedback gear are sleeved and connected with the main shaft. The worm gear and the sheet metal type feedback gear rotate synchronously and are relatively stationary during rotation;

[0007] The small bevel gear is sleeved and connected with the feedback rod. The small bevel gear and the feedback rod rotate synchronously and are relatively stationary during rotation;

[0008] The small bevel gear meshes with the sheet metal type feedback gear;

[0009] The axis corresponding to the main shaft is perpendicular to the axis corresponding to the feedback rod;

[0010] The angular displacement sensor is used to measure the angular displacement of the feedback rod;

[0011] When the main shaft rotates, the sheet metal type feedback gear moves synchronously with the main shaft, drives the small bevel gear to rotate, and then drives the feedback rod to rotate.

[0012] In a possible implementation, the small bevel gear is located at one end of the feedback rod;

[0013] The angular displacement sensor is located at the other end of the feedback rod.

[0014] In a possible implementation, the sheet metal type stroke feedback gear further includes a feedback rod sleeve;

[0015] The feedback rod sleeve is sleeved and connected with the feedback rod;

[0016] The small bevel gear contacts the feedback rod sleeve, and the feedback rod sleeve is used for circumferentially limiting the small bevel gear.

[0017] In a possible implementation, the sheet metal type stroke feedback gear further includes an open circlip;

[0018] The open circlip is connected to the feedback rod sleeve;

[0019] The open circlip is used for axially fixing the small bevel gear.

[0020] In a possible implementation, there is at least one first circlip groove on the main shaft;

[0021] The sheet metal type stroke feedback gear further includes a first retaining ring;

[0022] The first retaining ring cooperates with the worm gear;

[0023] The first retaining ring is snap-fitted with the first circlip groove to fixedly connect the worm gear to the main shaft.

[0024] In a possible implementation, there is at least one second circlip groove on the main shaft;

[0025] The sheet metal type stroke feedback gear further includes a second retaining ring;

[0026] The second retaining ring is connected to the second circlip groove to fixedly connect the sheet metal type feedback gear to the main shaft.

[0027] In a possible implementation, there are at least two rectangular bumps inside the sheet metal type feedback gear;

[0028] There is a rectangular groove on the main shaft, and the number of rectangular grooves corresponds to the number of rectangular bumps;

[0029] The sheet metal type feedback gear is fixedly connected to the main shaft through the cooperation of the rectangular bumps and the rectangular grooves.

[0030] The beneficial effects brought by the technical solution provided by the present utility model at least include:

[0031] The feedback gear formed by sheet metal forming is used to replace the parts that are difficult to form, and a feedback rod and an angular displacement sensor matching the main shaft are provided. During the movement of the main shaft, the angular displacement sensor of the feedback rod can generate data representing the movement state of the main shaft. The large bevel gear part with a high unit price and mold price in the bevel gear pair is changed to sheet metal forming, which improves the processing efficiency and the finished product rate of the formed parts is high. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0033] Figure 1 Fig. 4 shows a schematic structural diagram of a sheet metal type process feedback gear provided by an exemplary embodiment of the present invention.

[0034] Figure 2 Fig. 8 shows a front view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention.

[0035] Figure 3 Fig. 12 shows a top view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention.

[0036] Figure 4 Fig. 16 shows a cross-sectional view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention.

[0037] The reference signs in the drawings are as follows:

[0038] 1 - main shaft, 2 - first retaining ring, 3 - worm gear, 4 - sheet metal type feedback gear, 5 - second retaining ring, 6 - first axis, 7 - snap ring, 8 - small bevel gear, 9 - feedback rod sleeve, 10 - feedback rod, 11 - second axis, 12 - angular displacement sensor;

[0039] 1a - first circlip groove, 1b - second circlip groove, 1c - rectangular groove;

[0040] 4a - rectangular protrusion. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail with reference to the accompanying drawings.

[0042] Figure 1 Fig. 37 shows a schematic structural diagram of a sheet metal type process feedback gear provided by an exemplary embodiment of the present invention, Figure 2 Fig. 39 shows a front view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention, Figure 3 Fig. 41 shows a top view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention, Figure 4 Fig. 43 shows a cross-sectional view schematic diagram of a sheet metal type stroke feedback gear provided by an exemplary embodiment of the present invention. Please refer to Figures 1 to 4, the device includes a main shaft 1, a feedback rod 10, a worm gear 3, a sheet metal type feedback gear 4, a small bevel gear 8, and an angular displacement sensor 12; the worm gear 3 and the sheet metal type feedback gear 4 are sleeved on the main shaft 1, and the worm gear 3 and the sheet metal type feedback gear 4 rotate synchronously and are relatively stationary during rotation; the small bevel gear 8 is sleeved on the feedback rod, and the small bevel gear 8 and the feedback rod 10 rotate synchronously and are relatively stationary during rotation; the small bevel gear 8 meshes with the sheet metal type feedback gear 4; the axis corresponding to the main shaft 1 and the axis corresponding to the feedback rod 10 are perpendicular to each other; the angular displacement sensor 12 is used to measure the angular displacement of the feedback rod 10; when the main shaft 1 rotates, the sheet metal type feedback gear 4 moves synchronously with the main shaft 1, drives the small bevel gear 8 to rotate, and then drives the feedback rod 10 to rotate.

[0043] It should be noted that in the embodiment of the present application, the main shaft 1 rotates around the first axis 6, and the feedback rod 10 rotates around the second axis 11, and the first axis 6 is perpendicular to the second axis 11.

[0044] It should be noted that in the embodiment of the present application, the model of the angular displacement sensor 12 is FKBV62.

[0045] Next, through the various embodiments of the present application, the specific structure of the sheet metal type stroke feedback gear will be described.

[0046] In an optional embodiment, the small bevel gear 8 is located at one end of the feedback rod 10, and the angular displacement sensor 12 is located at the other end of the feedback rod 10.

[0047] In an optional embodiment, the sheet metal type stroke feedback gear further includes a feedback rod sleeve 9. The feedback rod sleeve 9 is sleeved on the feedback rod, the small bevel gear 8 contacts the feedback rod sleeve, and the feedback rod sleeve 9 is used for circumferentially limiting the small bevel gear 8.

[0048] In an optional embodiment, the sheet metal type stroke feedback gear further includes a snap ring 7. The snap ring 7 is sleeved on the feedback rod, and the snap ring 7 is used for axially fixing the small bevel gear 8.

[0049] In an optional embodiment, there is at least one first circlip groove 1a on the main shaft 1. The sheet metal type stroke feedback gear further includes a first retaining ring 2. The first retaining ring 2 cooperates with the worm gear 3, and the first retaining ring 2 is snap-fitted with the first circlip groove 1a to fix the worm gear 3 to the main shaft 1.

[0050] In an optional embodiment, there is at least one second circlip groove 1b on the main shaft 1. The sheet metal type stroke feedback gear further includes a second retaining ring 5. The second retaining ring 5 is connected to the second circlip groove 1b to fix the sheet metal type feedback gear 4 to the main shaft 1.

[0051] In this case, the interior of the sheet metal feedback gear 4 has at least two rectangular bumps 4a; the main shaft 1 has a rectangular groove 1c, and the number of the rectangular grooves 1c corresponds to the number of the rectangular bumps 4a; the sheet metal feedback gear 4 and the main shaft 1 are fixedly connected through the cooperation of the rectangular bumps 4a and the rectangular grooves 1c.

[0052] Next, in combination with the above embodiments, the working principle involved in this application will be described:

[0053] When the main shaft 1 rotates around the first axis 6, it drives the sheet metal feedback gear 4 to rotate synchronously. The sheet metal feedback gear 4 drives the small bevel gear 8 to rotate around the second axis 11 at a certain ratio through gear meshing. The small bevel gear 8 drives the feedback rod 10 to rotate, and the angular displacement of the feedback rod 10 is collected by the angular displacement sensor 12. In this way, it can be equivalently obtained that the angular displacement generated by the rotational movement of the main shaft 1 is collected by the angular displacement sensor 12 and converted into an electrical signal and output to the control circuit to facilitate the display and control of the rotational movement of the main shaft 1.

[0054] In summary, the device provided by the embodiment of this application uses a feedback gear formed by sheet metal forming to replace parts that are difficult to form, and a feedback rod and an angular displacement sensor matching the main shaft are provided, so that during the movement process of the main shaft, the angular displacement sensor of the feedback rod can generate data characterizing the movement state of the main shaft. The large bevel gear part with a relatively high unit price and die price in the bevel gear pair is changed to sheet metal forming, which improves the processing efficiency and the finished product rate of the formed parts is high.

[0055] The above are only optional embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sheet metal travel feedback gear, characterized in that: The sheet metal type travel feedback gear comprises a main shaft (1), a feedback rod (10), a worm gear (3), a sheet metal type feedback gear (4), a small bevel gear (8) and an angular displacement sensor (12); The worm wheel (3) and the sheet metal feedback gear (4) are sleeve-connected to the main shaft (1); the worm wheel (3) and the sheet metal feedback gear (4) rotate synchronously and are relatively stationary during the rotation process; The small bevel gear (8) is sleeve-connected with the feedback rod (10); the small bevel gear (8) and the feedback rod (10) rotate synchronously and remain relatively stationary during the rotation process; The small bevel gear (8) meshes with the sheet metal feedback gear (4); An axis corresponding to the main shaft (1) and an axis corresponding to the feedback rod (10) are perpendicular to each other; The angular displacement sensor (12) is used to measure the angular displacement of the feedback rod (10); When the main shaft (1) rotates, the sheet metal feedback gear (4) moves synchronously with the main shaft (1), and drives the small bevel gear (8) to rotate, thereby driving the feedback rod (10) to rotate.

2. The sheet metal travel feedback gear according to claim 1, characterized in that: The small bevel gear (8) is located at one end of the feedback rod (10); The angular displacement sensor (12) is located at the other end of the feedback rod (10).

3. The sheet metal travel feedback gear according to claim 1, characterized in that: The sheet metal travel feedback gear further comprises a feedback rod sleeve (9); The feedback rod sleeve (9) is sleeve-connected to the feedback rod (10); The small bevel gear (8) is in contact with the feedback rod sleeve (9), and the feedback rod sleeve (9) is used to circumferentially limit the small bevel gear (8).

4. The sheet metal travel feedback gear according to claim 1, characterized in that: The sheet metal travel feedback gear further comprises an open retaining ring (7); The open retaining ring (7) is sleeve-connected to the feedback rod (10); The open retaining ring (7) is used to axially fix the small bevel gear (8).

5. The sheet metal travel feedback gear according to claim 1, characterized in that: The main shaft (1) is provided with at least one first retaining ring groove (1a); The sheet metal travel feedback gear further comprises a first retaining ring (2); The first retaining ring (2) cooperates with the worm wheel (3); The first retaining ring (2) is engaged with the first retaining ring groove (1a) so that the worm wheel (3) is fixedly connected to the main shaft (1).

6. The sheet metal travel feedback gear according to claim 1, characterized in that: The main shaft (1) is provided with at least one second retaining ring groove (1b); The sheet metal travel feedback gear further includes a second retaining ring (5); The second retaining ring (5) is connected to the second retaining ring groove (1b) so that the sheet metal feedback gear (4) is fixedly connected to the main shaft (1).

7. The sheet metal travel feedback gear according to claim 6, characterized in that: The sheet metal feedback gear (4) has at least two rectangular protrusions (4a) inside; The main shaft is provided with rectangular grooves (1c), and the number of the rectangular grooves (1c) corresponds to the number of the rectangular protrusions (4a); The sheet metal feedback gear (4) and the main shaft (1) are fixedly connected through the cooperation between the rectangular protrusion (4a) and the rectangular groove (1c).

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