Clutch and automobile air outlet assembly

Abstract

The invention provides a clutch and an automobile air outlet assembly, and belongs to the technical field of automobile parts. One end of the linkage piece is rotationally connected to the input end of the second transmission shaft, and the axis of the linkage piece and the axis of the first transmission shaft are parallel and not coaxial; one end of the elastic piece is connected with the input end of the second transmission shaft, and the other end is connected with the other end of the linkage piece; when the second transmission shaft stops rotating due to the influence of external force and the first transmission shaft can continuously rotate, the output end of the first transmission shaft ejects the linkage piece open, the linkage piece is promoted to rotate, the elastic piece is stretched, and an angle difference is formed between the first transmission shaft and the second transmission shaft on the basis of a preset angle. According to the air conditioning mechanism, when external foreign matter cannot move, action transmission between the two transmission shafts can be disconnected, foreign matter clamping injury or mechanism damage is prevented, the air conditioning mechanism is reset after the foreign matter is eliminated, and the use safety of the automobile air outlet assembly is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts and relates to a clutch, in particular to an automobile air outlet assembly with a clutch. Background Art

[0002] With the development of the automobile industry, the blade reversing in the automobile air outlet assembly is basically driven by a motor to achieve automatic adjustment, realizing the intelligence of the automobile air outlet assembly. However, during the use of the intelligent automobile air outlet assembly, when a foreign object is inserted between two adjacent blades, such as a finger of a young child, the blade is passively stopped, causing the power of the motor to increase, resulting in the child's finger being pinched and the motor being damaged; if the inserted foreign object is sharp, it will also damage the blade, affecting the service life of the automobile air outlet assembly. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to provide an automobile air outlet assembly which can improve reliability and service life.

[0004] The object of the present invention can be achieved through the following technical solutions: A clutch, comprising:

[0005] The first transmission shaft can be rotated as an active member under the action of external force;

[0006] The second transmission shaft cooperates with the first transmission shaft through the shaft hole and can rotate as a driven member driven by the first transmission shaft;

[0007] A linkage member, one end of which is rotatably connected to the input end of the second transmission shaft, and an axis of the linkage member is parallel to and not coaxial with the axis of the first transmission shaft;

[0008] The elastic member is in an energy storage state, one end of which is connected to the input end of the second transmission shaft, and the other end of which is connected to the other end of the linkage member, so that the side of the linkage member is in abutment with the output end of the first transmission shaft, thereby maintaining a preset angle between the first transmission shaft and the second transmission shaft, and the rotation generated by the first transmission shaft drives the second transmission shaft to rotate through the linkage member and the elastic member;

[0009] Among them, when the second transmission shaft stops rotating due to external force and the first transmission shaft can continue to rotate, the output end of the first transmission shaft pushes open the linkage part, prompting the linkage part to rotate and stretching the elastic part, so that an angle difference is formed between the first transmission shaft and the second transmission shaft based on a preset angle.

[0010] In the above-mentioned clutch, a first positioning portion and a first connecting portion are respectively provided at both ends of the linkage member, a second positioning portion and a second connecting portion which are nested and matched with the first positioning portion are provided on the second transmission shaft, and both ends of the elastic member are respectively connected to the first connecting portion and the second connecting portion, wherein when an angle difference is formed between the first transmission shaft and the second transmission shaft, the output end of the first transmission shaft prompts the first positioning portion of the linkage member to rotate around the second positioning portion, stretching the elastic member so that the relative distance between the first connecting portion and the second connecting portion increases.

[0011] In the above-mentioned clutch, the first positioning part is a positioning arc or a positioning hole, and the second positioning part is a positioning column. When the positioning arc and the positioning column are nested, the contact arc length between the positioning arc and the positioning column is more than half of the circumference of the positioning column itself; when the positioning hole and the positioning column are nested, the positioning hole completely surrounds the positioning column.

[0012] In the above-mentioned clutch, the first connecting part and the second connecting part are both provided with open notches, namely the first notch and the second notch respectively, and the opening direction of the first notch is arranged opposite to the opening direction of the second notch, wherein the two ends of the elastic member are respectively engaged with the first notch and the second notch; or the first connecting part and the second connecting part are both provided with hooks, namely the first hook and the second hook respectively, and the opening direction of the first hook is arranged opposite to the opening direction of the second hook.

[0013] In the above-mentioned clutch, a first abutment portion is provided on the first transmission shaft, a second abutment portion is provided on the linkage member, and a semi-enclosed abutment is formed between the first abutment portion and the second abutment portion. When an angle difference is formed between the first transmission shaft and the second transmission shaft, the first abutment portion and the second abutment portion are disengaged.

[0014] In the above-mentioned clutch, the first abutting portion includes a first arc surface, and the first arc surface is respectively connected to the first plane on both sides, and the second abutting portion includes a second arc surface, and the second arc surface is respectively connected to the second plane on both sides. When the first transmission shaft and the second transmission shaft are maintained at a preset angle, the first arc surface and the second arc surface are nested; when an angle difference is formed between the first transmission shaft and the second transmission shaft, the first arc surface and the second arc surface are separated, and an angle is formed between the first plane and the second plane.

[0015] In the above clutch, the two first planes on both sides of the first arc surface are on the same horizontal plane, the two second planes on both sides of the second arc surface are on the same horizontal plane, and the first arc surface is set as a convex arc surface, and the second arc surface is set as a concave arc surface.

[0016] In the above-mentioned clutch, the first transmission shaft includes a first input part and a first output part, the second transmission shaft is provided with a second input part and a second output part, and the first output part is inserted into the second output part through the second input part, wherein the first abutment part is located between the first input part and the first output part, and the linkage part is connected to the second input part.

[0017] In the above-mentioned clutch, the second input part includes two first support plates and a second support plate that are parallel to each other and have a relative distance, and the edges of the first support plate and the second support plate are connected to the second connecting plate through a first connecting plate, and the first support plate, the second support plate, the first connecting plate and the second connecting plate are spliced ​​to form an internal hollow shell, wherein the linkage member is clamped between the first support plate and the second support plate, and the two sides of the linkage member along the power output direction are respectively in contact with the first support plate and the second support plate.

[0018] The present invention also provides an automobile air outlet assembly, including a clutch, an actuator and an air conditioning mechanism, wherein the actuator is connected to a first transmission shaft, and the air conditioning mechanism is connected to a second transmission shaft. When the actuator is in operation and the air conditioning mechanism is unable to move due to external foreign matter, the actuator can drive the first transmission shaft to continue rotating to a preset position.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a clutch which disconnects the motion transmission between two transmission shafts when the air conditioning mechanism is unable to move due to foreign matter, thereby preventing the mechanism from being pinched by the foreign matter or being damaged, and resets itself after the foreign matter is removed, thereby improving the safety of the automobile air outlet assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a clutch of the present invention.

[0022] Figure 2 It is a structural schematic diagram of a clutch of the present invention from another perspective.

[0023] Figure 3 yes Figure 2 Section view AA is shown.

[0024] Figure 4 It is a schematic structural diagram of the second transmission shaft in a preferred embodiment of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the first transmission shaft in a preferred embodiment of the present invention.

[0026] Figure 6 It is a structural schematic diagram of a linkage member in a preferred embodiment of the present invention.

[0027] Figure 7This is a cross-sectional view of the present invention when there is an angle difference between the first transmission shaft and the second transmission shaft Figure 1 .

[0028] Figure 8 This is a cross-sectional view of the present invention when there is an angle difference between the first transmission shaft and the second transmission shaft Figure 2 .

[0029] In the figure, 10, first transmission shaft; 11, first abutting portion; 111, first arc surface; 112, first plane; 12, first input portion; 13, first output portion;

[0030] 20, second transmission shaft; 21, second positioning portion; 22, second connecting portion; 221, second notch; 23, second input portion; 231, first support plate; 232, second support plate; 233, first connecting plate; 234, second connecting plate; 24, second output portion;

[0031] 30, linkage member; 31, first positioning portion; 32, first connecting portion; 321, first notch; 33, second abutting portion; 331, second arc surface; 332, second plane;

[0032] 40. Elastic parts. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] like Figures 1 to 8 As shown, the present invention provides a clutch, comprising:

[0036] The first transmission shaft 10 can be rotated as an active member under the action of external force;

[0037] The second transmission shaft 20 is matched with the first transmission shaft 10 through the shaft hole, and can rotate as a driven member under the drive of the first transmission shaft 10;

[0038] A linkage member 30, one end of which is rotatably connected to the input end of the second transmission shaft 20, and an axis of the linkage member 30 is parallel to and not coaxial with the axis of the first transmission shaft 10;

[0039] The elastic member 40 is in an energy storage state, one end of which is connected to the input end of the second transmission shaft 20, and the other end of which is connected to the other end of the linkage member 30, so that the side of the linkage member 30 is in abutment with the output end of the first transmission shaft 10, so that the first transmission shaft 10 and the second transmission shaft 20 are kept at a preset angle and the rotation of the first transmission shaft 10 drives the second transmission shaft 20 to rotate through the linkage member 30 and the elastic member 40;

[0040] Among them, when the second transmission shaft 20 stops rotating due to external force and the first transmission shaft 10 can continue to rotate, the output end of the first transmission shaft 10 pushes open the linkage member 30, prompting the linkage member 30 to rotate and stretching the elastic member 40, so that an angle difference is formed between the first transmission shaft 10 and the second transmission shaft 20 based on a preset angle.

[0041] It is worth mentioning that the first transmission shaft 10 is a transmission shaft connected to the actuator in the automobile air outlet assembly, and the second transmission shaft 20 is a transmission shaft connected to the air conditioning mechanism in the automobile air outlet assembly. When the air conditioning mechanism is unable to move due to external foreign matter, the second transmission shaft 20 stops rotating, while the second transmission shaft 20 can continue to rotate, so that an angle difference is formed between the first transmission shaft 10 and the second transmission shaft 20. As the first transmission shaft 10 continues to rotate, the linkage member 30 is pushed open, so that the linkage member 30 rotates and the elastic member 40 is stretched. When the foreign matter is removed, the linkage member 30 is reset under the action of the elastic member 40, so that the linkage member 30 abuts against the first transmission shaft 10 again, thereby realizing the synchronous rotation of the first transmission shaft 10 and the second transmission shaft 20.

[0042] The present invention provides a clutch which disconnects the motion transmission between two transmission shafts when the air conditioning mechanism is unable to move due to foreign matter, thereby preventing the mechanism from being pinched by the foreign matter or being damaged, and resets itself after the foreign matter is removed, thereby improving the safety of the automobile air outlet assembly.

[0043] Preferably, the two ends of the linkage member 30 are respectively provided with a first positioning portion 31 and a first connecting portion 32, the second transmission shaft 20 is provided with a second positioning portion 21 and a second connecting portion 22 which are nested with the first positioning portion 31, and the two ends of the elastic member 40 are respectively connected to the first connecting portion 32 and the second connecting portion 22, wherein when an angle difference is formed between the first transmission shaft 10 and the second transmission shaft 20, the output end of the first transmission shaft 10 prompts the first positioning portion 31 of the linkage member 30 to rotate around the second positioning portion 21, stretching the elastic member 40, so that the relative distance between the first connecting portion 32 and the second connecting portion 22 increases.

[0044] It is worth mentioning that, through the nesting cooperation between the first positioning portion 31 and the second positioning portion 21, and the connection between the first connecting portion 32 and the second connecting portion 22 through the elastic member 40, the linkage member 30 only rotates circumferentially when rotating relative to the second transmission shaft 20, and no movement occurs, and the linkage member 30 is more reliable when reset under the action of the elastic member 40.

[0045] It is worth mentioning that the first positioning portion 31 is a positioning arc or a positioning hole, and the second positioning portion 21 is a positioning column. When the positioning arc is nested with the positioning column, the contact arc length between the positioning arc and the positioning column is greater than half of the circumference of the positioning column itself; when the positioning hole is nested with the positioning column, the positioning hole completely surrounds the positioning column.

[0046] Preferably, both the first connecting portion 32 and the second connecting portion 22 are provided with open notches, which are respectively the first notch 321 and the second notch 221, and the opening direction of the first notch 321 is arranged opposite to the opening direction of the second notch 221, wherein the two ends of the elastic member 40 are respectively clamped at the first notch 321 and the second notch 221, and when the first transmission shaft 10 and the second transmission shaft 20 are maintained at a preset angle, the first notch 321 and the second notch 221 are in the same horizontal plane; or the first connecting portion 32 and the second connecting portion 22 are both provided with hooks, which are respectively the first hook and the second hook, and the opening direction of the first hook is arranged opposite to the opening direction of the second hook.

[0047] In this embodiment, the first connection portion 32 and the second connection portion 22 are configured as a hook structure because both ends of the elastic member 40 are often configured as hooks, and the hook structure is easily connected to the hook structure, thereby facilitating the assembly of the elastic member 40 .

[0048] Preferably, a first abutment portion 11 is provided on the first transmission shaft 10, and a second abutment portion 33 is provided on the linkage member 30, and a semi-enclosed abutment is formed between the first abutment portion 11 and the second abutment portion 33, and the radial movement of the linkage member 30 is limited by the abutment cooperation between the first abutment portion 11 and the second abutment portion 33, and when an angle difference occurs between the first transmission shaft 10 and the second transmission shaft 20, the first abutment portion 11 and the second abutment portion 33 are disengaged.

[0049] In this embodiment, the first abutment portion 11 and the second abutment portion 33 are detachably spliced ​​and abutted against each other, and when the first abutment portion 11 and the second abutment portion 33 are abutted against each other, the two form a semi-enclosed structure, so when an angle difference occurs between the first transmission shaft 10 and the second transmission shaft 20, the two can be separated and can be re-abutted against each other when resetting, thereby improving the reliability of the clutch.

[0050] It is further pointed out that the first abutting portion 11 includes a first arc surface 111, and the two sides of the first arc surface 111 are respectively connected to the first plane 112, and the second abutting portion 33 includes a second arc surface 331, and the two sides of the second arc surface 331 are respectively connected to the second plane 332. When the first transmission shaft 10 and the second transmission shaft 20 are maintained at a preset angle, the first arc surface 111 and the second arc surface 331 are nested; when an angle difference is formed between the first transmission shaft 10 and the second transmission shaft 20, the first arc surface 111 and the second arc surface 331 are separated, and an angle is formed between the first plane 112 and the second plane 332.

[0051] Furthermore, the two first planes 112 on both sides of the first arc surface 111 are on the same horizontal plane, the two second planes 332 on both sides of the second arc surface 331 are on the same horizontal plane, and the first arc surface 111 is a convex arc surface, and the second arc surface 331 is a concave arc surface.

[0052] It is worth mentioning that the angle between the first plane 112 and the second plane 332 is generally an acute angle. As long as the nesting fit between the first arc surface 111 and the second arc surface 331 is released, the transmission disconnection between the first transmission shaft 10 and the second transmission shaft 20 can be achieved. Among them, when the first transmission shaft 10 and the second transmission shaft 20 are in normal transmission, the snap-fit ​​fit between the first abutment portion 11 and the second abutment portion 33 can be that the first plane 112 and the second plane 332 are in contact, the first arc surface 111 and the second arc surface 331 are nested, and the first arc surface 111 is not in contact with the second plane; or the first arc surface 111 and the second arc surface 331 are nested, and the two are in contact, and the first plane 112 and the second plane 332 may be in contact, or may not be in contact.

[0053] Preferably, the first transmission shaft 10 includes a first input portion 12 and a first output portion 13, the second transmission shaft 20 is provided with a second input portion 23 and a second output portion 24, and the first output portion 13 is inserted into the second output portion 24 through the second input portion 23, wherein the first abutment portion 11 is located between the first input portion 12 and the first output portion 13, and the linkage member 30 is connected to the second input portion 23.

[0054] It is further pointed out that the second input part 23 includes two first support plates 231 and second support plates 232 which are parallel to each other and have a relative distance, and the edges of the first support plate 231 and the second support plate 232 are connected to the second connecting plate 233 and the second connecting plate 234, and the first support plate 231, the second support plate 232, the first connecting plate 233 and the second connecting plate 234 are spliced ​​to form an internal hollow shell, wherein the linkage member 30 is clamped between the first support plate 231 and the second support plate 232, and the two sides of the linkage member 30 along the power output direction are respectively in contact with the first support plate 231 and the second support plate 232.

[0055] In this embodiment, the linkage member 30 is clamped between the first support plate 231 and the second support plate 232. On the one hand, this further prevents the linkage member 30 from moving along the axial direction and ensures that the linkage member 30 can only rotate relative to the second transmission shaft 20. On the other hand, the contact area between the linkage member 30 and the second transmission shaft 20 is increased, so that the first transmission shaft 10 and the second transmission shaft 20 can operate synchronously when the clutch is in a normal state.

[0056] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0057] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A clutch, characterized in that: include: A first transmission shaft (10) can be rotated as an active member under the action of an external force; A second transmission shaft (20) is matched with the first transmission shaft (10) through a shaft hole and can rotate as a driven member driven by the first transmission shaft (10); A linkage member (30), one end of which is rotatably connected to the input end of the second transmission shaft (20), and an axis of the linkage member (30) is parallel to and not coaxial with an axis of the first transmission shaft (10); The elastic member (40) is in an energy storage state, one end of which is connected to the input end of the second transmission shaft (20), and the other end of which is connected to the other end of the linkage member (30), so that the side of the linkage member (30) is in abutment with the output end of the first transmission shaft (10), thereby maintaining a preset angle between the first transmission shaft (10) and the second transmission shaft (20), and the rotation generated by the first transmission shaft (10) drives the second transmission shaft (20) to rotate via the linkage member (30) and the elastic member (40); When the second transmission shaft (20) stops rotating due to an external force and the first transmission shaft (10) can continue to rotate, the output end of the first transmission shaft (10) pushes open the linkage member (30), causing the linkage member (30) to rotate and stretching the elastic member (40), so that an angle difference is formed between the first transmission shaft (10) and the second transmission shaft (20) based on a preset angle.

2. The clutch according to claim 1, characterized in that: The two ends of the linkage member (30) are respectively provided with a first positioning portion (31) and a first connecting portion (32); the second transmission shaft (20) is provided with a second positioning portion (21) and a second connecting portion (22) which are nested with the first positioning portion (31); and the two ends of the elastic member (40) are respectively connected to the first connecting portion (32) and the second connecting portion (22); wherein, when an angle difference is formed between the first transmission shaft (10) and the second transmission shaft (20), the output end of the first transmission shaft (10) causes the first positioning portion (31) of the linkage member (30) to rotate around the second positioning portion (21), stretching the elastic member (40) so that the relative distance between the first connecting portion (32) and the second connecting portion (22) increases.

3. The clutch according to claim 2, characterized in that: The first positioning portion (31) is a positioning arc or a positioning hole, and the second positioning portion (21) is a positioning column. When the positioning arc is nested with the positioning column, the contact arc length between the positioning arc and the positioning column is greater than half of the circumference of the positioning column itself; when the positioning hole is nested with the positioning column, the positioning hole completely surrounds the positioning column.

4. The clutch according to claim 2, characterized in that: The first connecting portion (32) and the second connecting portion (22) are both provided with open notches, namely the first notch (321) and the second notch (221), and the opening direction of the first notch (321) is arranged opposite to the opening direction of the second notch (221), wherein the two ends of the elastic member (40) are respectively engaged with the first notch (321) and the second notch (221); or the first connecting portion (32) and the second connecting portion (22) are both provided with hooks, namely the first hook and the second hook, and the opening direction of the first hook is arranged opposite to the opening direction of the second hook.

5. The clutch according to any one of claims 1 to 4, characterized in that: The first transmission shaft (10) is provided with a first abutment portion (11), the linkage member (30) is provided with a second abutment portion (33), and a semi-enclosed abutment is formed between the first abutment portion (11) and the second abutment portion (33); when an angle difference is formed between the first transmission shaft (10) and the second transmission shaft (20), the first abutment portion (11) and the second abutment portion (33) are disengaged.

6. The clutch according to claim 5, characterized in that: The first abutting portion (11) comprises a first arc surface (111), and the two sides of the first arc surface (111) are respectively connected to the first plane (112); the second abutting portion (33) comprises a second arc surface (331), and the two sides of the second arc surface (331) are respectively connected to the second plane (332); when the first transmission shaft (10) and the second transmission shaft (20) are maintained at a preset angle, the first arc surface (111) and the second arc surface (331) are nested; when an angle difference is formed between the first transmission shaft (10) and the second transmission shaft (20), the first arc surface (111) and the second arc surface (331) are separated, and an included angle is formed between the first plane (112) and the second plane (332).

7. The clutch according to claim 6, characterized in that: The two first planes (112) located on both sides of the first curved surface (111) are on the same horizontal plane, the two second planes (332) located on both sides of the second curved surface (331) are on the same horizontal plane, and the first curved surface (111) is arranged as a convex curved surface, and the second curved surface (331) is arranged as a concave curved surface.

8. The clutch according to claim 5, characterized in that: The first transmission shaft (10) comprises a first input portion (12) and a first output portion (13); the second transmission shaft (20) is provided with a second input portion (23) and a second output portion (24); the first output portion (13) is inserted into the second output portion (24) via the second input portion (23); the first abutting portion (11) is located between the first input portion (12) and the first output portion (13); and the linkage member (30) is connected to the second input portion (23).

9. The clutch according to claim 8, characterized in that: The second input part (23) comprises a first support plate (231) and a second support plate (232) which are parallel to each other and have a relative distance, and the edges of the first support plate (231) and the second support plate (232) are connected to the second connecting plate (234) through a first connecting plate (233), and an internally hollow shell is formed by splicing the first support plate (231), the second support plate (232), the first connecting plate (233) and the second connecting plate (234), wherein the linkage member (30) is clamped between the first support plate (231) and the second support plate (232), and the two sides of the linkage member (30) along the power output direction are respectively in contact with the first support plate (231) and the second support plate (232).

10. An automobile air outlet assembly, characterized in that: The invention comprises a clutch, an actuator and an air conditioning mechanism as described in any one of claims 1 to 9, wherein the actuator is connected to the first transmission shaft (10), and the air conditioning mechanism is connected to the second transmission shaft (20). When the actuator is in operation and the air conditioning mechanism is unable to move due to external foreign matter, the actuator can drive the first transmission shaft (10) to continue to rotate to a preset position.

Images