Swing lock mechanism

Abstract

The present application is suitable for the field of swing mechanism, and discloses a swing locking mechanism, which comprises a rotating mechanism, a swing piece, an end face cam, a limiting cam and a locking pin, the swing piece is in clearance fit with a rotating shaft of the rotating mechanism, the swing piece is provided with a positioning hole, the end face cam is installed on the rotating shaft, the end face cam can push the swing piece to rotate along with the rotating shaft, the end face cam is provided with a first cam track, the limiting cam forms a limiting groove with the end face cam, the side of the limiting cam facing the end face cam is provided with a second cam track, the locking pin is provided with a first abutting portion abutting against the first cam track and a second abutting portion abutting against the second cam track, one end of the locking pin is fixed relative to the rotating mechanism, the other end of the locking pin is provided with a pin shaft, the locking pin moves in the limiting groove, and the pin shaft is inserted into and pulled out of the positioning hole to realize locking of the swing piece at a preset angle, and the swing locking mechanism can be put into use in a specific field or a specific environment only after a small amount of test.

Description

Technical Field

[0001] This invention relates to the field of swing mechanisms, and more particularly to a swing locking mechanism. Background Technology

[0002] Oscillating mechanisms come in various forms, such as four-bar linkages, rack and pinion mechanisms, gear drives, and worm gears. However, except for worm gears, the others require additional locking mechanisms or components to achieve locking at the required angle, such as adding spring pins or electromagnetic pins. However, to ensure locking at the desired position, oscillating mechanisms using spring pins or electromagnetic pins require extensive testing before being used in specific fields (such as aerospace) and environments (such as vacuum environments or high / low temperature environments). This undoubtedly increases costs. Furthermore, in certain fields and environments, to avoid vacuum cold welding, surface contact and line contact oscillating mechanisms are avoided. Summary of the Invention

[0003] The purpose of this invention is to provide a swing locking mechanism that aims to solve the technical problem that existing swing mechanisms require extensive testing before they can be used in specific fields or environments, leading to increased costs.

[0004] To achieve the above objectives, the solution provided by the present invention is as follows:

[0005] A swing locking mechanism includes a rotating mechanism, a swing member, an end face cam, a limiting cam, and a locking pin. The rotating mechanism includes a rotating shaft, the swing member is clearance-fitted with the rotating shaft, and the swing member has at least one positioning hole. The end face cam is mounted on the rotating shaft, and the end face cam rotates with the rotating shaft to push the swing member to rotate around the rotating shaft. The end face cam has a first cam track on its end face away from the swing member. The limiting cam is supported on the end face cam and forms a limiting groove with the end face cam. The limiting cam has a second cam track that mates with the first cam track on one side facing the end face cam. The locking pin has a first abutting part that abuts against the first cam track and a second abutting part that abuts against the second cam track. The first abutting part and the second abutting part are coaxially arranged. One end of the locking pin is fixed relative to the rotating mechanism, and the other end is provided with a pin that mates with the positioning hole. The locking pin moves within the limiting groove, and the pin moves in and out of the positioning hole to lock the swinging part at a preset angle.

[0006] Preferably, there are two positioning holes, namely a first positioning hole and a second positioning hole. Both the first cam track and the second cam track include an ascending section, a holding section, and a descending section. The locking pin contacts the ascending section. The pin is inserted into the first positioning hole. The locking pin contacts the holding section of the end face cam and the limiting cam. The pin is pulled out of the first positioning hole or the second positioning hole. The rotating shaft drives the end face cam to push the swing member to rotate so that the first positioning hole or the second positioning hole rotates to a preset position. The locking pin contacts the descending section of the end face cam and the limiting cam. The pin is inserted into the second positioning hole.

[0007] Preferably, the swing member is locked at 50 degrees or 90 degrees, the first cam track is in the rising section from 0 degrees to 15 degrees, the holding section from 15 degrees to 50 degrees, and the falling section from 50 degrees to 65 degrees, the second cam track is in the rising section from 0 degrees to 15 degrees, the holding section from 15 degrees to 50 degrees, and the falling section from 50 degrees to 65 degrees.

[0008] Preferably, the oscillating member includes a mounting portion that is clearance-fitted with the rotating shaft and a protrusion on the mounting portion. The positioning hole at least penetrates the protrusion. The outer peripheral surface of the end face cam is provided with a first push block and a second push block. The first push block and the second push block are respectively located on both sides of the protrusion. The first push block is used to push the oscillating member to rotate counterclockwise around the rotating shaft, and the second push block is used to push the oscillating member to rotate clockwise around the rotating shaft.

[0009] Preferably, the first abutting portion is conical, and the second abutting portion is conical.

[0010] Preferably, the rotating mechanism is a drive motor, and the output shaft of the drive motor is a rotating shaft.

[0011] Preferably, the swing locking mechanism further includes a frame, the rotating mechanism is mounted on the frame, and the end of the locking pin away from the pin shaft is rotatably connected to the frame.

[0012] Preferably, the frame includes a base plate and a vertical plate vertically arranged on the base plate. The rotating mechanism is fixed on the base plate and the vertical plate. The swinging mechanism also includes a rotating shaft seat supported on the vertical plate. The end of the locking pin away from the pin shaft is axially connected to the rotating shaft seat. The swinging component, the end face cam, the limiting cam, and the locking pin are sequentially arranged between the vertical plate and the rotating shaft seat.

[0013] The swing locking mechanism provided by this invention achieves the insertion and removal movement of the locking pin and the swing component through the cooperation of the locking pin, the end face cam, and the limiting cam. This allows the swing lock to be locked at a preset angle, and it can be put into use in specific fields or environments after only a few tests, thus better controlling costs. In addition, this swing locking mechanism avoids the use of locking components such as electromagnetic pins and springs, improving stability and service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the swing locking mechanism provided in an embodiment of the present invention;

[0016] Figure 2 This is a partial schematic diagram of the swing locking mechanism provided in an embodiment of the present invention;

[0017] Figure 3 This is a side view of the swing locking mechanism provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the combination of the swinging component, the end face cam, and the limiting cam provided in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the locking pin provided in an embodiment of the present invention.

[0020] Explanation of icon numbers:

[0021] 10. Rotating mechanism; 11. Rotating shaft; 20. Swinging component; 21. First positioning hole; 22. First positioning hole; 23. Mounting part; 24. Protrusion; 30. End face cam; 31. First cam track; 311. Rising section; 312. Holding section; 313. Falling section; 32. Limiting groove; 33. First push block; 34. Second push block; 40. Limiting cam; 41. Second cam track; 50. Locking pin; 51. First abutment part; 52. Second abutment part; 53. Pin; 60. Frame; 61. Base plate; 62. Vertical plate; 70. Rotating shaft seat. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0026] Please see Figures 1-5The swing locking mechanism of this invention includes a rotating mechanism 10, a swing member 20, an end face cam 30, a limiting cam 40, and a locking pin 50. The rotating mechanism 10 includes a rotating shaft 11. The swing member 20 is clearance-fitted with the rotating shaft 11, meaning the swing member 20 is configured to rotate freely on the rotating shaft 11. The swing member 20 has at least one positioning hole. The end face cam 30 is mounted on the rotating shaft 11. When the end face cam 30 rotates clockwise with the rotating shaft 11, it can push the swing member 20 to rotate clockwise around the rotating shaft 11. When the end face cam 30 rotates counterclockwise with the rotating shaft 11, it can push the swing member 20 to rotate counterclockwise around the rotating shaft 11. The end face cam 30 has a first protrusion on its end face away from the swing member 20. The wheel track 31 and the limiting cam 40 are supported on the end face cam 30 and form a limiting groove 32 with the end face cam 30. The side of the limiting cam 40 facing the end face cam 30 is provided with a second cam track 41 that cooperates with the first cam track 31. The locking pin 50 is provided with a first abutting part 51 that abuts against the first cam track 31 and a second abutting part 52 that abuts against the second cam track 41. The first abutting part 51 and the second abutting part 52 are coaxially arranged. One end of the locking pin 50 is fixed relative to the rotating mechanism 10, and the other end is provided with a pin 53 that cooperates with the positioning hole. The locking pin 50 moves in the limiting groove 32, and the pin 53 performs insertion and extraction movements with the positioning hole to lock the swing member 20 at a preset angle.

[0027] In this embodiment, the rotating mechanism 10 is a drive motor, and the output shaft of the drive motor is the rotating shaft 11. The drive motor is very convenient to use and control, and it produces no smoke or odor, does not pollute the environment, and has low noise.

[0028] Understandably, the rotating mechanism 10 can also use other power equipment, as long as it can achieve the rotation of the end face cam 30.

[0029] The swing locking mechanism of this invention achieves the insertion and removal movement of the locking pin 53 and the swing member 20 through the cooperation of the locking pin 53 with the end face cam 30 and the limiting cam 40. This allows the swing lock to be locked at a preset angle, and it can be put into use in specific fields or environments after only a few tests, thus better controlling costs. In addition, this swing locking mechanism avoids the use of locking components such as electromagnetic pins and springs, improving stability and service life.

[0030] Please see Figures 1-5The swing locking mechanism is used to lock the swing member 20 at two preset angles. To achieve this, the number of positioning holes needs to be designed, and the first cam track 31 and the second cam track 41 also need to be designed. In this embodiment, two positioning holes are provided: a first positioning hole 2221 and a second positioning hole. The first positioning hole 2221 and the second positioning hole are arranged counterclockwise. Both the first cam track 31 and the second cam track 41 include a rising section 311, a holding section 312, and a falling section 313. The pin 50 contacts the rising section 311 of the end face cam 30 and the rising section 311 of the limit cam 40. The pin 53 is inserted into the first positioning hole 2221. The locking pin 50 contacts the holding section 312 of the end face cam 30 and the limit cam 40. The pin 53 is pulled out of the first positioning hole 2221 or the second positioning hole. The rotating shaft 11 drives the end face cam 30 to push the swing member 20 to rotate so that the first positioning hole 2221 or the second positioning hole rotates to a preset position. The locking pin 50 contacts the falling section 313 of the end face cam 30 and the limit cam 40. The pin 53 is inserted into the second positioning hole.

[0031] If the pin 53 is inserted into the first positioning hole 2221, the locking pin 50 is locked at the first preset angle. At this time, the locking pin 50 contacts the rising section 311 of the end face cam 30 and the rising section 311 of the limit cam 40. Subsequently, in order to lock the locking pin 50 at the second preset angle, the position of the swing member 20 needs to be adjusted. The adjustment process is as follows: the rotating shaft 11 drives the end face cam 30 and the positioning cam to rotate clockwise until the pin 53 is pulled out of the first positioning hole 2221. At this time, the locking pin 50 contacts the holding section 312 of the end face cam 30 and the holding section 312 of the limit cam 40. Then the end face cam 30 pushes the swing member 20 to rotate clockwise until the locking pin 50 contacts the falling section 313 of the end face cam 30 and the falling section 313 of the limit cam 40. The pin 53 is gradually inserted into the second positioning hole.

[0032] Similarly, if the pin 53 is inserted into the second positioning hole, the locking pin 50 is locked at the second preset angle. At this time, the locking pin 50 contacts the descending section 313 of the end face cam 30 and the descending section 313 of the limiting cam 40. Subsequently, in order to lock the locking pin 50 at the first preset angle, the position of the swing member 20 needs to be adjusted. The adjustment process is as follows: the rotating shaft 11 drives the end face cam 30 and the positioning cam to rotate counterclockwise until the pin 53 is pulled out of the second positioning hole. At this time, the locking pin 50 contacts the retaining section 312 of the end face cam 30 and the retaining section 313 of the limiting cam 40. 12. After contact, the end face cam 30 pushes the swing member 20 to rotate counterclockwise until the locking pin 50 contacts the rising section 311 of the end face cam 30 and the rising section 311 of the limiting cam 40. The pin 53 is gradually inserted into the second positioning hole. Since the clockwise and counterclockwise rotation directions of the end face cam 30 are opposite, the rising section 311 of the first cam track 31 is in the upward direction when the pointer is clockwise and in the downward direction when the pointer is counterclockwise. The falling section 313 of the first cam track 31 is in the downward direction when the pointer is clockwise and in the upward direction when the pointer is counterclockwise. The second cam track 41 is the same, which will not be described in detail here.

[0033] Understandably, the specific structure of the first cam track 31 and the second cam track 41 can be designed according to the required locking angle, and no specific restrictions are made here. The structure of the first cam track 31 and the second cam track 41 is explained below with the example of the swing member 20 achieving the locking function at 50 degrees or 90 degrees.

[0034] The first cam track 31 has an ascending section 311 from 0 to 15 degrees, a holding section 312 from 15 to 50 degrees, and a descending section 313 from 50 to 65 degrees. The second cam track 41 has an ascending section 311 from 0 to 15 degrees, a holding section 312 from 15 to 50 degrees, and a descending section 313 from 50 to 65 degrees.

[0035] If the swing locking mechanism only needs to be locked at a preset angle, the first cam track 31 and the second cam track 41 do not need to be provided with a descending section 313, only an ascending section 311 and a holding section 312 are required.

[0036] Please see Figures 1-5 The swing member 20 includes a mounting portion 23 that is clearance-fitted with the rotating shaft 11 and a protrusion 24 protruding from the mounting portion 23. The positioning hole at least penetrates the protrusion 24. The outer peripheral surface of the end face cam 30 is provided with a first push block 33 and a second push block 34. The first push block 33 is used to push the swing member 20 to rotate counterclockwise around the rotating shaft 11, and the second push block 34 is used to push the swing member 20 to rotate clockwise around the rotating shaft 11. By setting the first push block 33 and the second push block 34 to cooperate with the protrusion 24 of the swing member 20, the swing member 20 is driven to rotate.

[0037] When the swing locking mechanism is used to lock the swing member 20 at 50 degrees and 90 degrees, and the pin 53 is inserted into the first positioning hole 2221, the second push block 34 forms a 15-degree angle with the swing member 20.

[0038] It should be noted that the protrusion 24 can be configured as a long arc-shaped protrusion 24, the first push block 33 and the second push block 34 are respectively located on both sides of the protrusion 24, the first positioning hole 2221 penetrates the protrusion 24 at least, and the second positioning hole penetrates the protrusion 24 at least. In this embodiment, both the first positioning hole 2221 and the second positioning hole penetrate the protrusion 24 and the mounting part 23.

[0039] The protrusion 24 can also be configured as two short arc-shaped protrusions 24 spaced apart. One short arc-shaped protrusion 24 is used to cooperate with the first push block 33 of the end face cam 30, and the other short arc-shaped protrusion 24 is used to cooperate with the second push block 34 of the end face cam 30. The first positioning hole 2221 and the second positioning hole are located between the two short arc-shaped protrusions 24, and both the first positioning hole 2221 and the second positioning hole penetrate the mounting part 23.

[0040] Please see Figures 1-5 The first abutting part 51 is conical and makes point contact with the first cam track 31. The second abutting part 52 is conical and makes point contact with the second cam track 41, thus avoiding problems such as vacuum cold welding caused by line contact or surface contact.

[0041] Please see Figures 1-5 The swing locking mechanism also includes a frame 60, a rotating mechanism 10 is mounted on the frame 60, and the end of the locking pin 50 away from the pin shaft 53 is rotatably connected to the frame 60.

[0042] Furthermore, the frame 60 includes a base plate 61 and a vertical plate 62 vertically mounted on the base plate 61. The rotating mechanism 10 is fixed on the base plate 61 and the vertical plate 62. The swinging mechanism also includes a rotating shaft seat 70 supported on the vertical plate 62. The end of the locking pin 50 away from the pin 53 is axially connected to the rotating shaft seat 70. The swinging member 20, the end face cam 30, the limit cam 40 and the locking pin 50 are sequentially arranged between the vertical plate 62 and the rotating shaft seat 70. By reasonably setting the positional relationship of the rotating mechanism 10, the swinging member 20, the end face cam 30, the limit cam 40 and the locking pin 50 in the frame 60, the compactness of the frame 60 can be improved.

[0043] Understandably, the locking pin 50 can also be rotatably mounted on the rotating mechanism 10.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A swing locking mechanism, characterized in that, The device includes a rotating mechanism, a swing member, an end face cam, a limiting cam, and a locking pin. The rotating mechanism includes a rotating shaft. The swing member is clearance-fitted with the rotating shaft and has at least one positioning hole. The end face cam is mounted on the rotating shaft and rotates with the rotating shaft to push the swing member to rotate around the rotating shaft. The end face cam has a first cam track on its end face away from the swing member. The limiting cam is supported on the end face cam and forms a limiting groove with the end face cam. The side of the limiting cam facing the end face cam has a second cam track that mates with the first cam track. The locking pin has a first abutting part that abuts against the first cam track and a second abutting part that abuts against the second cam track. The first abutting part and the second abutting part are coaxially arranged. One end of the locking pin is fixed relative to the rotating mechanism, and the other end has a pin that mates with the positioning hole. The locking pin moves within the limiting groove, and the pin inserts and pulls into the positioning hole to lock the swing member at a preset angle.

2. The swing locking mechanism as described in claim 1, characterized in that, The positioning hole is provided in two parts, namely a first positioning hole and a second positioning hole. Both the first cam track and the second cam track include an ascending section, a holding section and a descending section. The locking pin contacts the ascending section. The pin is inserted into the first positioning hole. The locking pin contacts the holding section of the end face cam and the limiting cam. The pin is pulled out of the first positioning hole or the second positioning hole. The rotating shaft drives the end face cam to push the swing member to rotate so that the first positioning hole or the second positioning hole rotates to a preset position. The locking pin contacts the descending section of the end face cam and the limiting cam. The pin is inserted into the second positioning hole.

3. The swing locking mechanism as described in claim 2, characterized in that, The swing element is locked at 50 degrees or 90 degrees. The first cam track has an ascending section from 0 degrees to 15 degrees, a holding section from 15 degrees to 50 degrees, and a descending section from 50 degrees to 65 degrees. The second cam track has an ascending section from 0 degrees to 15 degrees, a holding section from 15 degrees to 50 degrees, and a descending section from 50 degrees to 65 degrees.

4. The swing locking mechanism as described in claim 1, characterized in that, The swing member includes a mounting portion that is clearance-fitted with the rotating shaft and a protrusion on the mounting portion. The positioning hole at least penetrates the protrusion. The outer peripheral surface of the end face cam is provided with a first push block and a second push block. The first push block and the second push block are respectively located on both sides of the protrusion. The first push block is used to push the swing member to rotate counterclockwise around the rotating shaft, and the second push block is used to push the swing member to rotate clockwise around the rotating shaft.

5. The swing locking mechanism as described in claim 1, characterized in that, The first abutment portion is conical, and the second abutment portion is conical.

6. The swing locking mechanism as described in claim 1, characterized in that, The rotating mechanism is a drive motor, and the output shaft of the drive motor is a rotating shaft.

7. The swing locking mechanism as described in claim 1, characterized in that, The swing locking mechanism also includes a frame, the rotating mechanism is mounted on the frame, and the end of the locking pin away from the pin shaft is rotatably connected to the frame.

8. The swing locking mechanism as described in claim 7, characterized in that, The frame includes a base plate and a vertical plate vertically arranged on the base plate. The rotating mechanism is fixed on the base plate and the vertical plate. The swing locking mechanism also includes a rotating shaft seat supported on the vertical plate. The end of the locking pin away from the pin shaft is axially connected to the rotating shaft seat. The swinging component, the end face cam, the limiting cam and the locking pin are sequentially arranged between the vertical plate and the rotating shaft seat.

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