Automobile torsion inner handle and assembling method thereof

Abstract

The application discloses a car torsion type inner handle, which comprises a shell, a knob arranged on the shell, the knob being exposed on the inner side of a door, a transmission gear set arranged in the shell, a pull rope for opening the door, and an input end of the transmission gear set being connected with the knob and an output end of the transmission gear set being connected with the pull rope, the knob driving the transmission gear set to rotate, the transmission gear set driving the pull rope to move along the length direction of the door, and the door being unlocked.

Description

A torsion-type interior door handle for automobiles and its assembly method Technical Field

[0001] This invention relates to the field of automotive technology, specifically to a torsion-type inner door handle for automobiles and its assembly method. Background Technology

[0002] As people's living standards continue to improve, the demand for automobiles is also increasing. In recent years, the production and sales volume of my country's automobile industry has continued to grow, and my country has become a major automobile producer and consumer. Automobile parts are indispensable components, and the interior door handle is one of the essential parts. Traditionally, interior door handles are mounted on a handle base, and the door is unlocked by pulling the interior handle towards the interior space of the car.

[0003] However, the existing interior door handles have the following drawbacks: when the vehicle is filled with a lot of items, they may block the door, leaving passengers with insufficient space to pull the interior handle. This requires people to open the door from the outside, causing inconvenience to users. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes a torsion-type inner door handle for automobiles and its assembly method.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] A car door handle with a torsion mechanism includes a housing with a knob rotated on the housing and exposed inside the door. The housing contains a transmission gear set and a pull rope for opening the door. The input end of the transmission gear set is connected to the knob, and the output end is connected to the pull rope. The knob drives the transmission gear set to rotate, so that the transmission gear set drives the pull rope to move along the length of the door and unlock the door.

[0007] Preferably, the axes of at least the output and input ends of the transmission gear set are perpendicular to the car door and perpendicular to the pull rope. Through these improvements, the knob is located on the side of the housing, ensuring that only the knob is exposed on the car door when installed, thus saving space. Furthermore, its perpendicular orientation to the pull rope allows the pull rope to move horizontally along the length of the car door during knob rotation, improving the stability of the pull rope's movement.

[0008] Preferably, a pin is inserted into the housing, and the transmission gear set includes a first gear, a second gear, a third gear, and a fourth gear that are rotatably mounted on the pin and mesh sequentially. The first gear is connected to the knob, and the fourth gear is connected to the pull cord. Through these improvements, the knob, via the meshing of multiple gears, reduces the force required to pull the cord, thereby reducing the force required to turn the knob. This allows users to more easily turn the knob to unlock the car door, thus improving the user experience.

[0009] Preferably, the second and third gears are double gears. The input ends of the first and second gears mesh, the output end of the second gear meshes with the input end of the third gear, and the output end of the third gear meshes with the fourth gear, with the meshing direction opposite to the knob. Through this improvement, because the first, second, third, and fourth gears mesh sequentially away from the knob, the entire structure faces inwards from the housing, ensuring that only one knob is exposed. Furthermore, by using double gears for the second and third gears, the volume of the overall transmission gear set is reduced, allowing the entire inner handle structure to be better installed inside the car door.

[0010] Preferably, the transmission ratio of any stage of the transmission gear set is greater than 1. Through the above improvements, since the tooth profile and pitch of the first, second, third, and fourth gears are the same, but the number of teeth is different, multiple small gears drive the large gear, realizing multiple force reductions, thereby reducing the force required to turn the knob.

[0011] Preferably, the fourth gear extends axially away from the third gear and has a rotating part. A mounting cavity is formed on the rotating part, and a torsion spring is provided within the mounting cavity. One end of the torsion spring abuts against the fourth gear, and the other end abuts against the housing, so that the fourth gear always has a tendency to retract the pull rope. Through these improvements, the torsion spring acts on the fourth gear, causing the pull rope to automatically reset after the knob is released, further improving the user experience. Furthermore, the rotating part's placement away from the third gear ensures that only the knob is exposed, reducing the space occupied inside the vehicle.

[0012] Preferably, a rotating post is embedded in the rotating part, the rotating post is connected to the pull rope, and a limiting groove is formed on the rotating part for stretching and rotating. Through these improvements, the rotating post is embedded in the rotating part, and the pull rope is connected to the rotating post, ensuring the stability of the connection. Furthermore, the limiting groove limits the pull rope on both sides, ensuring stability during the unlocking process.

[0013] Preferably, a wire guide sleeve is snapped onto the housing, and the pull cord is movably disposed within the wire guide sleeve, with the wire guide sleeve directly opposite the limiting groove. Through these improvements, the pull cord is movably disposed within the wire guide sleeve, and the wire guide sleeve is directly opposite the limiting groove, further improving the stability of the pull cord during movement, thereby enhancing the smoothness of door unlocking.

[0014] Preferably, a connecting seat is inserted into the first gear, and the knob is engaged with the connecting seat. With this improvement, only the knob is exposed on the outside, and the connecting seat drives the first gear to rotate, thereby moving the pull rope to unlock the device.

[0015] An assembly method for a torsion-type inner door handle for automobiles, the assembly process of which is as follows:

[0016] S0: Knob pre-installation: Take a knob and snap it onto the connector to fix the knob on the connector;

[0017] S1: Install the transmission gear set: Insert the pin into the housing, and sequentially mesh the first gear, the second gear, and the third gear inside the housing, and then close the housing;

[0018] S2: Install the remaining transmission gear set: Insert the fourth gear into the opening at the bottom of the housing, so that it meshes with the output end of the third gear, place the torsion spring into the fourth gear, and finally insert the pin to rotate the fourth gear into the housing.

[0019] S3: Install the knob: Insert the connector into the housing so that the connector is inserted into the first gear, so that the knob can drive the first gear to rotate.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] By twisting and rotating the knob, the transmission gear set is activated, which in turn pulls the cable to unlock the car door. Compared to traditional pull-type interior handles, this invention only has the knob exposed on the car door, reducing the space occupied inside the vehicle. Even when an object is blocking the interior handle, the door can still be unlocked by turning the knob. Furthermore, the transmission gear set reduces the force required to turn the knob, allowing users to unlock the door with just a gentle turn, further improving the user experience. It also eliminates the need for a separate interior handle assembly and recessed cup, resulting in high flexibility and integrity of the door panel. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the housing of the present invention;

[0024] Figure 3 is a schematic diagram of the transmission gear set of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the knob and the connecting seat of the present invention;

[0026] Figure 5 is a schematic diagram of the structure of the first gear of the present invention;

[0027] Figure 6 is a schematic diagram of the structure of the fourth gear of the present invention;

[0028] Figure 7 is a schematic diagram of the structure of the housing and the fourth gear of the present invention;

[0029] Figure 8 is a schematic diagram of the structure of the housing of the present invention;

[0030] Figure 9 is a schematic diagram of one embodiment of the blocking structure of the present invention;

[0031] Figure 10 is a schematic diagram of another embodiment of the blocking structure of the present invention;

[0032] In the diagram: 1. Housing; 2. Knob; 3. Transmission gear set; 4. Pull rope; 5. Pin; 6. Blocking structure; 101. First gear; 102. Second gear; 103. Third gear; 104. Fourth gear; 105. Rotating part; 106. Torsion spring; 107. Rotating column; 108. Limiting groove; 109. Wire guide sleeve; 201. Connecting seat; 202. Ring groove; 203. First slot; 204. Snap-fit ​​buckle; 205. Cross protrusion; 206. Cross groove; 301. First snap-fit ​​protrusion; 302. First snap-fit ​​groove; 303. Second snap-fit ​​protrusion; 304. Second snap-fit ​​groove; 305. Limiting buckle; 306. Snap-fit ​​platform; 307. Mounting cavity; 401. Blocking plate; 402. First elastic element; 403. Blocking column; 404. Second elastic element; Detailed Implementation

[0033] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0035] Example 1

[0036] As shown in Figures 1-10, a car door handle with a twist mechanism includes a housing 1, a knob 2 mounted on the housing 1, the knob 2 being exposed inside the door, a transmission gear set 3 inside the housing 1, and a pull rope 4 for opening the door. The input end of the transmission gear set 3 is connected to the knob 2, and the output end is connected to the pull rope 4. The knob 2 drives the transmission gear set 3 to rotate, causing the transmission gear set 3 to move the pull rope 4 along the length of the door and unlock the door. By twisting and rotating, the knob 2 drives the transmission gear set 3 to operate. Pulling the cord 4 unlocks the car door. Compared to the traditional pull-type inner handle, this invention only has the knob 2 exposed on the car door, reducing the space occupied inside the car. When an object is blocking the inner handle, the car door can also be unlocked by turning the knob 2. Furthermore, the transmission gear set 3 reduces the force required to turn the knob 2. Users only need to turn the knob 2 gently to unlock the car door, avoiding collisions and further improving the user experience. Moreover, there is no need to set the position of the inner handle assembly and the recessed cup body separately, resulting in high plasticity and integrity of the door panel.

[0037] As shown in Figures 2 and 3, as a further explanation of the implementation of the transmission gear set 3 in this embodiment, a pin 5 is inserted into the housing 1. The transmission gear set 3 includes a first gear 101, a second gear 102, a third gear 103, and a fourth gear 104, which are rotatably mounted on the pin 5 and mesh in sequence. The first gear 101 is connected to the knob 2, and the fourth gear 104 is connected to the pull rope 4. The knob 2 reduces the force required to pull the pull rope 4 through the meshing of multiple gears, thereby reducing the force required to turn the knob 2. This allows the user to more easily turn the knob 2 to unlock the car door, thus improving the user experience.

[0038] Specifically, the second gear 102 and the third gear 103 are double gears. The input end of the first gear 101 meshes with the input end of the second gear 102, the output end of the second gear 102 meshes with the input end of the third gear 103, and the output end of the third gear 103 meshes with the fourth gear 104. The meshing direction is away from the knob 2. Since the first gear 101, the second gear 102, the third gear 103, and the fourth gear 104 mesh in sequence away from the knob 2, the entire structure is set towards the inside of the housing 1, ensuring that only one knob 2 is exposed. Furthermore, by using double gears for the second gear 102 and the third gear 103, the volume of the overall transmission gear set 3 is reduced, allowing the entire inner handle structure to be better installed inside the car door.

[0039] Furthermore, the transmission ratio of any stage of the transmission gear set 3 is greater than 1. The tooth profile and pitch of the first gear 101, the second gear 102, the third gear 103, and the fourth gear 104 are the same, but the number of teeth is different. The number of teeth of the first gear 101 is A, the number of teeth at the input end of the second gear 102 is B, and the number of teeth at the output end is C, the number of teeth at the input end of the third gear 103 is D, and the number of teeth at the output end is E, and the number of teeth of the fourth gear 104 is F. A is less than B, C is less than D, and E is less than F, so as to form multiple small wheels driving large wheels, realizing multiple force reductions, thereby reducing the force required to turn the knob 2.

[0040] The fourth gear 104 extends axially away from the third gear 103 and has a rotating part 105. A mounting cavity 307 is formed on the rotating part 105, and a torsion spring 106 is provided in the mounting cavity 307. One end of the torsion spring 106 abuts against the fourth gear 104, and the other end abuts against the housing 1, so that the fourth gear 104 always has a tendency to retract the pull rope 4. The torsion spring 106 acts on the fourth gear 104 so that the pull rope 4 will automatically reset after the knob 2 is released, which further improves the user experience. Moreover, the rotating part 105 is set away from the third gear 103 to ensure that only the knob 2 is exposed, reducing the space occupied in the vehicle.

[0041] As shown in Figures 6 and 7, preferably, a rotating post 107 is embedded in the rotating part 105, the rotating post 107 is connected to the pull rope 4, and a limiting groove 108 for stretching and rotating is formed on the rotating part 105, which ensures the stability of the connection. The limiting groove 108 limits the pull rope 4 on both sides, ensuring the stability during the unlocking process.

[0042] As shown in Figure 3, preferably, the axes of at least the output and input ends of the transmission gear set 3 are perpendicular to the car door and are perpendicular to the pull rope 4. The knob 2 is installed on the side of the housing 1 and connected to the transmission gear set 3. By placing the knob 2 on the side of the housing 1, when it is installed on the car door, only the knob 2 is exposed on the car door, thereby saving space. Furthermore, by being perpendicular to the pull rope 4, the pull rope 4 moves horizontally along the length of the car door during the rotation of the knob 2, which improves the stability of the pull rope 4 during movement.

[0043] As shown in Figure 7, in some other embodiments, a wire sleeve 109 is snapped onto the housing 1, and the pull rope 4 is movably disposed within the wire sleeve 109, with the wire sleeve 109 directly facing the limiting groove 108. The movable placement of the pull rope 4 within the wire sleeve 109, with the wire sleeve 109 directly facing the limiting groove 108, further improves the stability of the pull rope 4 during movement, thereby improving the smoothness of unlocking the car door.

[0044] Specifically, a ring groove 202 is formed on the wire guide sleeve 109, and a first slot 203 is formed on the housing 1 for the ring groove 202 to be inserted, so as to realize the quick positioning of the wire guide sleeve 109. The housing 1 is provided with a snap fastener 204, which snaps with the outer periphery of the wire guide sleeve 109, so that the wire guide sleeve 109 is quickly fixed on the housing 1.

[0045] As shown in Figures 1, 2, 4, and 5, a further explanation of the cooperation between the knob 2 and the transmission gear set 3 in this embodiment is provided: a connecting seat 201 is inserted into the first gear 101, and the knob 2 is snapped into the connecting seat 201, with only the knob 2 exposed on the outside. The first gear 101 is driven to rotate through the connecting seat 201, thereby driving the pull rope 4 to move and unlock.

[0046] Furthermore, a cross protrusion 205 is formed at the bottom of the connecting seat 201, and a cross groove 206 is formed on the first gear 101, so that the connecting seat 201 can be quickly inserted into the first gear 101 and drive the first gear 101 to rotate.

[0047] Specifically, a first engaging protrusion 301 is formed on the knob 2, and a first engaging groove 302 is formed on the connecting seat 201 for the first engaging protrusion 301 to be inserted into. The first engaging protrusion 301 abuts against the bottom of the first engaging groove 302, thereby enabling the knob 2 to be engaged on the connecting seat 201. A second engaging protrusion 303 is formed on the connecting seat 201, and a second engaging groove 304 is formed on the knob 2 for the second engaging protrusion 303 to be inserted into, thereby further improving the stability of the connection.

[0048] As shown in Figures 4 and 8, preferably, a limiting buckle 305 is provided on the upper part of the housing 1, and a locking platform 306 is formed on the knob 2 to cooperate with the limiting buckle 305. The limiting buckle 305 abuts against the top of the locking platform 306, thereby rotating and fixing the knob 2 on the housing 1.

[0049] Further explanation of the assembly method for automotive torsion-type inner door handles: The assembly process is as follows:

[0050] S0: Knob pre-installation: Take a knob 2 and snap it onto the connector 201 to fix the knob 2 onto the connector 201;

[0051] S1: Install the transmission gear set: Insert the pin 5 into the housing 1, and sequentially mesh the first gear 101, the second gear 102, and the third gear 103 inside the housing 1, and then cover the housing 1;

[0052] S2: Install the remaining transmission gear set: Insert the fourth gear 104 into the opening at the bottom of the housing 1 so that it meshes with the output end of the third gear 103, and place the torsion spring 106 into the fourth gear 104. Finally, insert the pin 5 so that the fourth gear 104 is rotated into the housing 1.

[0053] S3: Install the knob: Insert the connector 201 into the housing 1 so that the connector 201 is inserted into the first gear 101, so that the knob 2 can drive the first gear 101 to rotate.

[0054] Example 2

[0055] As shown in Figure 9, the housing 1 is also provided with a blocking structure 6. The blocking structure 6 includes a blocking plate 401 mounted on the housing 1, a first elastic element 402 located at the bottom of the blocking plate 401, and a second elastic element 402 located between the blocking plate 401 and the housing 1. The elastic element 402 always applies a force to the blocking plate 401 away from the rotating part 105. However, because the first elastic element 402 is positioned at one end of the blocking plate 401, a certain distance is maintained between the blocking plate 401 and the housing 1. When the car door is impacted, the blocking plate 401 will be impacted first and will rotate towards the rotating part 105, locking the car door and preventing it from being unlocked. After the impact ends, the first elastic element 402 drives the blocking plate 401 to retract, allowing normal unlocking. This prevents the car door from being unlocked and opened after an impact, thus avoiding the possibility of people being thrown out of the car door.

[0056] Example 3

[0057] As shown in Figure 10, the housing 1 is also provided with a blocking structure 6. The blocking structure 6 includes a blocking plate 401 mounted on the housing 1, a first elastic element 402 located at the bottom of the blocking plate 401, and a blocking post 403 abutting against one end of the blocking plate 401. The first elastic element 402 always applies a force to the 401 in the direction of the rotating part 105. However, because the blocking post 403 abuts against one end of the blocking plate 401, the other end of the blocking plate 401 cannot enter the rotation range of the rotating part 105. When the car door is in a normal state, the blocking plate 401 moves away from the rotating part 105 under the action of the blocking post 403, allowing the car door to open. When the side of the car door is impacted, the blocking post 403, located at the position closest to the car door in the housing 1, will break first, causing the blocking plate 401 to move towards the rotating part 105, preventing the rotating part 105 from rotating, thereby preventing the car door from opening after being impacted and causing people to be thrown out of the car door.

[0058] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A car door handle with a torsion mechanism, comprising a housing (1), a knob (2) rotated on the housing (1), the knob (2) being exposed inside the car door, a transmission gear set (3) and a pull rope (4) for opening the car door are provided inside the housing (1), and the input end of the transmission gear set (3) is connected to the knob (2), and the output end is connected to the pull rope (4), the knob (2) drives the transmission gear set (3) to rotate, so that the transmission gear set (3) drives the pull rope (4) to move along the length of the car door and unlock the car door; a pin (5) is inserted inside the housing (1), the transmission gear set (3) includes a first gear (101), a second gear (102), a third gear (103), and a fourth gear (104) rotated on the pin (5) and meshed in sequence, the first gear (101) being connected to the knob (2) and the fourth gear (104) being connected to the pull rope (4); the fourth gear (104) being connected to the pull rope (4) and the fourth gear (104) being connected to the pull rope (4); the fourth gear (104) being connected to the pull rope (4) and the fourth gear (104) being connected to the pull rope (4) are provided inside the housing (1). A rotating part (105) extends axially away from the third gear (103) from the gear (104). A mounting cavity (307) is formed on the rotating part (105), and a torsion spring (106) is provided in the mounting cavity (307). One end of the torsion spring (106) abuts against the fourth gear (104), and the other end abuts against the housing (1), so that the fourth gear (104) always has the tendency to retract the pull rope (4). A blocking structure (6) is also provided in the housing (1). The blocking structure (6) includes a blocking plate (401) mounted on the housing (1), a first elastic element (402) disposed at the bottom of the blocking plate (401), the first elastic element (402) always applies a force to the blocking plate (401) in a direction away from the rotating part (105), and a second elastic element (404) is provided between the blocking plate (401) and the housing (1) to maintain a certain distance between the blocking plate (401) and the housing (1).

2. The automotive torsion-type inner handle according to claim 1, characterized in that, The transmission gear set (3) has at least the input and output axes perpendicular to the car door and is set perpendicular to the pull rope (4).

3. The automotive torsion-type inner handle according to claim 1, characterized in that, The second gear (102) and the third gear (103) are double gears. The first gear (101) meshes with the input end of the second gear (102), the output end of the second gear (102) meshes with the input end of the third gear (103), and the output end of the third gear (103) meshes with the fourth gear (104), with the meshing direction opposite to the knob (2).

4. The automotive torsion-type inner handle according to claim 1, characterized in that, The transmission ratio of any stage of the transmission gear set (3) is greater than 1.

5. The automotive torsion-type inner handle according to claim 1, characterized in that, The rotating part (105) is provided with a rotating column (107), the rotating column (107) is connected to the pull rope (4), and a limiting groove (108) for the pull rope to rotate is formed on the rotating part (105).

6. The automotive torsion-type inner handle according to claim 1, characterized in that, The housing (1) is fitted with a wire sleeve (109), and the pull rope (4) is movably disposed inside the wire sleeve (109), with the wire sleeve (109) facing the limiting groove (108).

7. A car torsion-type inner handle according to claim 1, characterized in that, A connecting seat (201) is inserted into the first gear (101), and the knob (2) is snapped onto the connecting seat (201).

8. A method for assembling a torsion-type inner door handle for automobiles, characterized in that, The assembly process using the automotive torsion handle as described in claim 7 is as follows: S0: Pre-installation of knob (2): Take a knob (2) and snap it onto the connecting seat (201) to fix the knob (2) on the connecting seat (201); S1: Installation of partial transmission gear set (3): Insert the pin (5) into the housing (1) and sequentially mesh the first gear (101), the second gear (102), and the third gear (103) in the housing (1) and cover the housing (1); S2: Installation Remaining transmission gear set (3): Insert the fourth gear (104) into the opening at the bottom of the housing (1) so that it meshes with the output end of the third gear (103), and place the torsion spring (106) into the fourth gear (104). Finally, insert the pin (5) so that the fourth gear (104) is rotated into the housing (1); S3: Install the knob (2): Insert the connecting seat (201) into the housing (1) so that the connecting seat (201) is inserted into the first gear (101) so that the knob (2) can drive the first gear (101) to rotate.

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