Multi-degree-of-freedom fork arm type window glass lifter

Abstract

The utility model relates to the technical field of automobile window accessories, in particular to a multi-degree-of-freedom fork arm type glass lifter which comprises a driving arm and two driven arms, the driven arms are rotationally connected with the driving arm, and the two driven arms are rotationally connected with the same position of the driving arm. The two driven arms clamp the driving arm, the ends, connected with the driving arm, of the driven arms are bent towards the driving arm, a bent groove is formed in the driving arm in the length direction, and the thickness of the bent position of each driven arm is larger than the depth of the corresponding bent groove. One end, far away from the driving arm, of one driven arm is provided with a ball pin, and the ball pin is movably connected with the fixed guide rail; and second ball heads are arranged at the ends, away from the driving arm, of the driving arm and the other driven arm correspondingly, and the second ball heads are movably connected with the movable guide rail. By adopting the scheme, the technical problem that the service life of the window glass lifter is shortened due to incapability of lifting the automobile window glass caused by deformation of the driving and driven arms in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile window accessories, in particular to a multi-degree-of-freedom fork-arm type glass lifter. Background Art

[0002] The fork-arm glass lifter is a common type of automobile window lifter, which is mainly composed of a motor, a toothed plate, an active arm, a driven arm, a slide rail and other components, wherein the slide rail includes a fixed rail and a moving rail. During use, the motor is started, and the toothed plate is driven by the motor to rotate. The toothed plate is connected to one end of the active arm, and the toothed plate pushes the active arm to move accordingly. The driven arm is hinged to the middle of the active arm, and the active arm drives the driven arm to move, so that one end of the driven arm moves on the fixed rail, and the other end drives the moving rail to move. The moving rail is connected to the window glass bracket, and the moving rail drives the window glass to rise and fall.

[0003] During the use of the lifter, if the distance the lifter supports the window glass is too long, the lifter will be subjected to excessive torque and deform. At the same time, after long-term use, the active arm and the driven arm of the existing lifter are prone to bending, causing friction between the active arm and the driven arm, resulting in interference, making it difficult for the active arm and the driven arm to rotate, resulting in the inability of the existing car window glass to be raised and lowered normally. Utility Model Content

[0004] The utility model aims to provide a multi-degree-of-freedom fork-arm type glass lifter to solve the technical problem in the prior art that the automobile window glass cannot be lifted or lowered due to deformation of the master and slave arms, thereby reducing the service life of the window glass lifter.

[0005] The utility model provides the following basic solutions:

[0006] A multi-degree-of-freedom fork-arm type glass lifter comprises a main arm and two slave arms, wherein the slave arms are both rotationally connected to the main arm, and the two slave arms are rotationally connected to the same position of the main arm;

[0007] The two slave arms clamp the active arm, and one end of the slave arm connected to the active arm is bent toward the active arm. A bending groove is provided along the length direction of the active arm, and the thickness of the bent part of the slave arm is greater than the groove depth of the bending groove.

[0008] Furthermore, the two driven arms are rotatably connected to the active arm via bearings.

[0009] Furthermore, it also includes a fixed guide rail, and a ball pin is provided at one end of a driven arm away from the active arm, and the ball pin is movably connected to the fixed guide rail.

[0010] Furthermore, the ball pin includes a slider and a first ball head. The slider is slidably connected to the fixed guide rail. A ball groove used in conjunction with the first ball head is provided at the bottom of the slider. The first ball head is located in the ball groove. One end of the first ball head contacts the fixed guide rail, and the other end is provided with a first connecting column that passes through the bottom of the ball groove. The first connecting column passes through one end of the slider and is rotatably connected to the driven arm.

[0011] Furthermore, it also includes a movable guide rail, and the active arm and the other driven arm are each provided with a second ball head at one end away from the active arm, and the second ball head is movably connected to the movable guide rail.

[0012] Furthermore, a movable groove is provided on the movable guide rail, the second ball head is located in the movable groove, and blocking buckles are provided on the groove walls at both ends of the movable groove, and the blocking buckles are used to prevent the second ball head from escaping from the movable groove.

[0013] Furthermore, the cross section of the movable groove is the same as the cross section of the second ball head, and both are circular.

[0014] Furthermore, window brackets are provided at both ends of the moving guide rail.

[0015] Furthermore, the slots of the movable slots are all provided with elastic buffer parts, and the length direction of the elastic buffer parts is parallel to the length direction of the movable guide rail.

[0016] Furthermore, a second connecting column is provided between the second ball head and the active arm and the driven arm. One end of the second connecting column connected to the second ball head is a frustum. The bottom surface of the frustum is far away from the second ball head, and the side surface of the frustum is in contact with the two elastic buffer parts.

[0017] Beneficial effects of the basic program:

[0018] 1. This solution improves the structure of the active arm and the driven arm, and sets a bending groove on the active arm to increase the structural strength of the active arm and reduce the possibility of the active arm bending under force. At the same time, a bend is set on the driven arm, and the thickness of the bend is greater than the groove depth of the bending groove, so as to avoid mutual friction and interference between the active arm and the driven arm during the rotation process. In addition, the active arm and the driven arm are connected by a bearing rotation. Compared with the existing technology, the friction force at the rotation connection is smaller, making the rotation between the active arm and the driven arm smoother.

[0019] 2. In this solution, a ball pin design is used between the fixed guide rail and the driven arm. Through the characteristics of the spherical pair, the driven arm and the fixed guide rail have the ability to move in the Y-axis, so that the window glass changes a certain trajectory when the fixed guide rail of the door frame moves, meets the curvature change of the door frame, and improves the overall freedom of the lifter.

[0020] 3. This solution improves the moving guide rail by designing the square guide rail in the prior art into a cylindrical guide rail, and designing the slider in contact with the guide rail into a sphere. Compared with the prior art, the degree of freedom of connection between the master and slave arms and the moving guide rail is increased. At the same time, an elastic buffer is designed at the slot of the moving guide rail, so that the master and slave arms can move stably on the moving guide rail, thereby improving the stability of the car window lifting and lowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an embodiment of a multi-degree-of-freedom fork-arm type glass lifter of the utility model;

[0022] Figure 2 It is a structural schematic diagram of another viewing angle of an embodiment of a multi-degree-of-freedom fork-arm type glass lifter of the utility model;

[0023] Figure 3 This is a schematic structural diagram of the master and slave arms of a multi-degree-of-freedom fork-arm type glass lifter embodiment of the utility model;

[0024] Figure 4 A half-section view of a ball pin of a multi-degree-of-freedom fork-arm type glass lifter embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of a moving guide rail of a multi-degree-of-freedom fork-arm type glass lifter embodiment of the utility model;

[0026] Figure 6 The utility model is a partial cross-sectional view of a moving guide rail of a multi-degree-of-freedom fork-arm type glass lifter embodiment. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The figure marks in the drawings of the specification include: active arm 1, bending portion 2, bending groove 3, first driven arm 4, second driven arm 5, fixed guide rail 6, slider 7, first ball head 8, moving guide rail 9, second ball head 10, blocking buckle 11, elastic buffer portion 12, window bracket 13, window glass 14.

[0029] Example

[0030] A multi-degree-of-freedom fork-arm type glass lifter, as shown in the attached Figure 1 , 2 As shown, it includes a master arm 1 and two slave arms, each of which is rotatably connected to the master arm 1, and the two slave arms are rotatably connected to the same position of the master arm 1. The two slave arms are rotatably connected to the master arm 1 through bearings. In this embodiment, the bearings are ball bearings. The slave arms are riveted to both sides of the master arm 1, and the rotatable connection is fixed by bearings.

[0031] As attached Figure 3 As shown, two slave arms clamp the active arm 1, and one end of the slave arm connected to the active arm 1 is bent toward the active arm 1. Specifically, a bending portion 2 is provided on the slave arm, and one end of the slave arm is bent toward the active arm 1 to form the bending portion 2, and the bending portion 2 is connected to the bearing. A bending groove 3 is provided on the active arm 1 along the length direction, and the bending groove 3 is a strip groove, and the rotation connection between the active arm 1 and the slave arm is located in the middle of the strip groove. The thickness of the bending part of the slave arm is greater than the groove depth of the bending groove 3. Specifically, the slave arm includes a first slave arm 4 and a second slave arm 5. One side of the active arm 1 is bent to form the bending groove 3. The rotation connection between the first slave arm 4 and the active arm 1 is located at the groove bottom of the bending groove 3. The rotation connection between the second slave arm 5 and the active arm 1 is located at a relative position on the other side of the active arm 1. The size of the bending portion 2 of the first slave arm 4 along the length direction is greater than the groove depth size of the bending groove 3. First, during the rotation of the active arm 1 and the driven arm, the friction between the two is avoided to cause interference, and second, the active arm 1 and the first driven arm 4 can be connected to the same moving guide rail 9, so as to control the stable lifting and lowering of the vehicle window glass 14.

[0032] It also includes a fixed guide rail 6, and a ball pin is provided at one end of a driven arm away from the active arm 1, and the ball pin is movably connected to the fixed guide rail 6. Specifically, a ball pin is provided at one end of the second driven arm 5 away from the bending portion 2, and the fixed guide rail 6 is a square guide rail. A slide groove is provided on one side of the fixed guide rail 6, and the groove opening of the slide groove is smaller than the groove bottom of the slide groove, so that the ball pin cannot escape from the groove opening of the slide groove. The ball pin provided on the second driven arm 5 passes through the groove opening of the slide groove and is movably connected to the fixed guide rail 6.

[0033] As attached Figure 4 As shown, the ball pin includes a slider 7 and a first ball head 8. The slider 7 is slidably connected to the fixed guide rail 6. A ball groove for use with the first ball head 8 is provided at the bottom of the slider 7. The first ball head 8 is located in the ball groove, and one end of the first ball head 8 can be exposed from the ball groove to contact the fixed guide rail 6. The other end of the first ball head 8 is provided with a first connecting column that passes through the bottom of the ball groove. The first connecting column passes through one end of the slider 7 and is rotatably connected to the second follower arm 5. The first connecting column and the first ball head 8 are integrally formed. In this embodiment, the first connecting column adopts a hinge column, and the second follower arm 5 is hinged to the first ball head 8 through the hinge column. The design of the ball pin utilizes the characteristics of the spherical pair to enhance the movement ability of the first follower arm 4 and improve the overall degree of freedom of the lifter.

[0034] As attached Figure 5 , 6As shown, it also includes a movable guide rail 9, and the active arm 1 and the other driven arm are both provided with a second ball head 10 at one end away from the active arm 1, and the second ball head 10 is movably connected to the movable guide rail 9. Specifically, one end of the active arm 1 and the end of the first driven arm 4 away from the active arm 1 are both provided with a second ball head 10, and a second connecting column is provided between the second ball head 10 and the active arm 1 and the first driven arm 4. The second connecting column and the second ball head 10 are integrally formed. In this embodiment, the second connecting column adopts a hinge column, and the active arm 1, the first driven arm 4 and the second ball head 10 are hinged through the hinge column.

[0035] The movable guide rail 9 is provided with a movable groove, and the groove direction of the movable groove is parallel to the length direction of the movable guide rail 9, that is, the groove direction of the movable groove is parallel to the moving direction of the second ball head 10 on the movable guide rail 9. The cross section of the movable groove is the same as the cross section of the second ball head 10, and the cross section shape is circular. The ball head design adopted in this solution increases the degree of freedom of the active arm 1 and the first driven arm 4 compared with the slider 7 design in the prior art.

[0036] The second ball heads 10 are all located in the movable grooves, and the groove walls at both ends of the movable grooves are provided with blocking buckles 11, which are used to prevent the second ball heads 10 from escaping from the movable grooves. Specifically, U-shaped holes are provided at the bottoms of both ends of the movable grooves, and the two U-shaped holes face each other. When in use, the two second ball heads 10 are inserted from both ends of the movable grooves, and then a force is applied to the enclosed part of the U-shaped holes to bend toward the movable groove to form the blocking buckles 11. At this time, the blocking buckle 11 is located in the movable groove, that is, when the blocking buckle 11 is located in the moving path of the second ball head 10, the blocking buckle 11 blocks the movement of the second ball head 10 to prevent the second ball head 10 from escaping from the movable groove.

[0037] The slots of the movable slots are all provided with elastic buffers 12, and the length direction of the elastic buffers 12 is parallel to the length direction of the movable guide rail 9. There are two elastic buffers 12, and the elastic buffers 12 are arranged obliquely on opposite sides, and the distance between the two elastic buffers 12 gradually increases from the movable guide rail 9 to the outside. In this embodiment, the elastic buffers 12 are made of rubber, and the elastic buffers 12 are bonded to the movable guide rail 9.

[0038] One end of the second connecting column connected to the second ball head 10 is a truncated cone, and the bottom surface of the truncated cone is far away from the second ball head 10. Specifically, the cross-sectional area of ​​the truncated cone gradually increases from the second ball head 10 to the master and slave arms. The side surfaces of the truncated cone are in contact with the two elastic buffers 12, that is, the truncated cone can move along the length direction of the elastic buffer 12, and the elastic buffer 12 will not interfere with the movement of the second ball head 10.

[0039] Window brackets 13 are provided at both ends of the movable guide rail 9, and the two window brackets 13 are used to install the same window glass 14. Specifically, mounting holes are also provided at the bottom of both ends of the movable groove, and the window brackets 13 are fixedly connected to the movable guide rail 9 through the mounting holes. In this embodiment, the window brackets 13 are fixedly connected to the movable guide rail 9 by screws, and the window glass 14 is clamped with the two window brackets 13. The design of the window brackets 13 is used to install the car windows, and through the cooperation with the car door, its moving space is limited, so as to realize the stable lifting and lowering of the window glass 14.

[0040] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A multi-degree-of-freedom fork-arm type glass lifter, comprising a main arm and two slave arms, wherein the slave arms are both rotatably connected to the main arm, and the two slave arms are rotatably connected to the same position of the main arm; Features: The two slave arms clamp the active arm, and one end of the slave arm connected to the active arm is bent toward the active arm. A bending groove is provided along the length direction of the active arm, and the thickness of the bent part of the slave arm is greater than the groove depth of the bending groove.

2. The multi-degree-of-freedom fork-arm type window lifter according to claim 1, characterized in that: The two driven arms are rotatably connected to the active arm through bearings.

3. The multi-degree-of-freedom fork-arm type window lifter according to claim 2, characterized in that: It also includes a fixed guide rail. A ball pin is provided at one end of a driven arm away from the active arm, and the ball pin is movably connected to the fixed guide rail.

4. The multi-degree-of-freedom fork-arm type window lifter according to claim 3, characterized in that: The ball pin includes a slider and a first ball head. The slider is slidably connected to the fixed guide rail. A ball groove used in conjunction with the first ball head is provided at the bottom of the slider. The first ball head is located in the ball groove. One end of the first ball head contacts the fixed guide rail, and the other end is provided with a first connecting column that passes through the bottom of the ball groove. The first connecting column passes through one end of the slider and is rotatably connected to the driven arm.

5. The multi-degree-of-freedom fork-arm type window lifter according to claim 4, characterized in that: It also includes a moving guide rail. The active arm and the other driven arm are both provided with a second ball head at one end away from the active arm, and the second ball head is movably connected to the moving guide rail.

6. The multi-degree-of-freedom fork-arm type window lifter according to claim 5, characterized in that: A movable groove is provided on the movable guide rail, the second ball head is located in the movable groove, and blocking buckles are provided on the groove walls at both ends of the movable groove, and the blocking buckles are used to prevent the second ball head from escaping from the movable groove.

7. The multi-degree-of-freedom fork-arm type window lifter according to claim 6, characterized in that: The cross section of the movable groove is the same as that of the second ball head, and both of them are circular.

8. The multi-degree-of-freedom fork-arm type window lifter according to claim 7, characterized in that: Window brackets are provided at both ends of the moving guide rail.

9. The multi-degree-of-freedom fork-arm type window lifter according to claim 7, characterized in that: The notches of the movable grooves are all provided with elastic buffer parts, and the length direction of the elastic buffer parts is parallel to the length direction of the movable guide rails.

10. The multi-degree-of-freedom fork-arm type window lifter according to claim 9, characterized in that: A second connecting column is provided between the second ball head and the active arm and the driven arm. One end of the second connecting column connected to the second ball head is a truncated cone. The bottom surface of the truncated cone is far away from the second ball head, and the side surface of the truncated cone contacts the two elastic buffer parts.

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