Angle adjuster for preventing infiltration of electrophoresis liquid and method for assembling the same

Abstract

The present invention relates to an angle adjuster for preventing the intrusion of an electrophoresis liquid, which includes a gear rack and a ring gear rack that are rotatable relative to each other, and a hoop used to integrally hold the gear rack and the ring gear rack. Here, one end of the hoop is fixedly connected to the ring gear rack, and the other end of the hoop is bent toward the gear rack to form a clearance fit with the gear rack. The present invention further relates to a method for assembling the angle adjuster for preventing the intrusion of the electrophoresis liquid. According to the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention, by bending and shaping the hoop, the clearance is controlled to prevent impurities such as the electrophoresis liquid from entering the inside of the angle adjuster, thereby avoiding the influence on the normal function of the angle adjuster. By controlling the clearance between the drive cam and the gear rack, the intrusion of impurities such as the electrophoresis liquid into the inside of the angle adjuster can be further prevented. By selecting a metal cover for the cover and controlling the clearances at both ends of the cover, the intrusion of impurities such as the electrophoresis liquid into the inside of the angle adjuster can be further prevented.

Description

Technical Field

[0001] The present invention relates to an automotive seat, and more specifically, to an angle adjuster for preventing the intrusion of an electrophoretic liquid and a method for assembling the same.

Background Art

[0002] In the development process of an angle adjuster (recliner), in order to improve the corrosion resistance and rust prevention performance of the angle adjuster, the assembled angle adjuster is usually electrophoresed using a conventional electrophoretic process that uses immersion cleaning. However, since there are gaps between the components of the angle adjuster, the electrophoretic liquid often intrudes into the angle adjuster along the gaps. For example, it intrudes into the angle adjuster along the gap between the hoop and the gear rack, increasing the operating torque and often affecting the normal function of the angle adjuster.

Summary of the Invention

Problems to be Solved by the Invention

[0003] In order to solve the problem in the above prior art that the electrophoretic liquid intruding into the angle adjuster along the gap may affect the function of the angle adjuster, the present invention provides an angle adjuster for preventing the intrusion of the electrophoretic liquid and a method for assembling the same.

Means for Solving the Problems

[0004] The angle adjuster for preventing the intrusion of the electrophoretic liquid of the present invention includes a gear rack and a ring gear rack that are rotatable relative to each other, and a hoop used to integrally hold the gear rack and the ring gear rack. Here, one end of the hoop is fixedly connected to the ring gear rack, and the other end of the hoop is bent toward the gear rack to form a clearance fit with the gear rack.

[0005] Preferably, the short side of the hoop is welded and fixed to the end of the ring gear rack via a laser welding seam.

[0006] Preferably, before forming the hoop, the inner end surface of the hoop is parallel to the outer end surface of the gear rack, and after forming the hoop, the gap formed between the hoop and the gear rack is reduced.

[0007] Preferably, the angle adjuster for preventing the intrusion of the electrophoresis liquid further includes an eccentric member driven by a drive cam, and the eccentric member rotates in the circumferential direction to drive the relative rotational movement between the gear rack and the ring gear rack.

[0008] Preferably, the gear rack has external teeth, the ring gear rack has an internal tooth ring, the gear rack and the ring gear rack are connected to each other through the external teeth and the internal tooth ring that mesh with each other, and the gear rack has a neck ring concentric with the external teeth.

[0009] Preferably, the drive cam has a cylindrical section that axially inserts and extends into the neck ring.

[0010] Preferably, an oil storage tank is provided on the corner end surface of the drive cam.

[0011] Preferably, the eccentric member is restricted by the fitting of a wedge and a spring so that the external teeth of the gear rack are press-fitted into the internal tooth ring of the ring gear rack at the meshing position.

[0012] Preferably, the wedge is supported on the neck ring by its curved inner surface and supports the ring gear rack by its curved outer surface.

[0013] Preferably, the angle adjuster for preventing the intrusion of the electrophoresis liquid further includes a friction bearing disposed between the curved outer surface of the wedge and the central hole of the ring gear rack.

[0014] Preferably, the drive cam has a drive section, the wedge is composed of two wedge sections, the drive section is inserted into the clearance between the narrow sides of the two wedge sections, and both ends of the spring are respectively connected to the wide sides of the two wedge sections facing each other, whereby the spring acts on the wedge section in the circumferential direction to forcibly separate the two wedge sections.

[0015] Preferably, the angle adjuster for preventing the intrusion of the electrophoresis liquid further includes a cover that is covered by the drive cam and connected and fixed to the ring gear rack.

[0016] Preferably, the cover is a metal cover.

[0017] Preferably, the cover is welded and fixed to the ring gear rack through an outer flange and a laser welding seam.

[0018] Preferably, the lower surface of the outer flange is fitted and welded to the upper surface of the ring gear rack.

[0019] Preferably, the cover is attached to the surface of the drive cam through an inner flange.

[0020] The method for assembling the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention includes the steps of meshing and assembling the external teeth gear of the gear rack with the internal teeth ring of the ring gear rack, fixedly connecting one end of the hoop to the ring gear rack, and bending the other end of the hoop towards the gear rack to form a clearance fit with the gear rack.

[0021] Preferably, an electrophoresis-preventing liquid grease is laid in the clearance.

Advantages of the Invention

[0022] According to the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention, the gap is controlled by bending and forming the hoop, preventing impurities such as the electrophoresis liquid from entering the inside of the angle adjuster, thereby avoiding the influence on the normal function of the angle adjuster. Further, according to the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention, by controlling the gap between the drive cam and the gear rack, the intrusion of impurities such as the electrophoresis liquid into the inside of the angle adjuster can be further prevented. Also, according to the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention, by selecting the cover as a metal cover and controlling the gaps at both ends of the cover, the intrusion of impurities such as the electrophoresis liquid into the inside of the angle adjuster can be further prevented.

Brief Description of the Drawings

[0023]

Figure 1

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Figure 2

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Figure 3

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Figure 4

[0027]

Figure 5

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Figure 6

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Figure 7

[0030]

Figure 8

[0031]

Figure 9

Best Mode for Carrying Out the Invention

[0032] Hereinafter, preferred embodiments of the present invention will be provided and described in detail in conjunction with the accompanying drawings.

[0033] As shown in FIGS. 1 to 2, the angle adjuster for preventing the electrophoretic fluid from entering according to a preferred embodiment of the present invention includes a hoop 1, a gear tooth plate 2, and a ring gear tooth plate 3. Here, the gear tooth plate 2 and the ring gear tooth plate 3 are arranged to be rotatable relative to each other, and the hoop 1 is used to integrally hold the gear tooth plate 2 and the ring gear tooth plate 3. In this embodiment, it should be understood that the hoop 1 for absorbing the axial acting force is fixedly connected to the ring gear tooth plate 3. The hoop 1 does not prevent the relative rotation between the gear tooth plate 2 and the ring gear tooth plate 3.

[0034] Regarding the installation of the angle adjuster for preventing the intrusion of the electrophoresis solution, the gear rack 2 can be attached to the seat surface, and by attaching the ring gear rack 3 to the backrest, the inclination angle of the backrest with respect to the seat surface can be adjusted. Of course, the attachment positions of the gear rack 2 and the ring gear rack 3 can be swapped, that is, the gear rack 2 can be attached to the backrest and the ring gear rack 3 can be attached to the seat surface.

[0035] The gear rack 2 and the ring gear rack 3 are connected to each other via gears so as to facilitate adjustment and fixation. In order to form a gear connection, an external gear is formed on the gear rack 2, and an internal gear ring is formed on the ring gear rack 3, and the external gear and the internal gear ring mesh with each other. The diameter of the outer tooth tip circle of the external gear is at least one tooth height smaller than the diameter of the inner tooth root circle of the internal gear ring. Due to the difference of at least one tooth corresponding to the number of teeth between the external gear and the internal gear ring, the internal gear ring can perform a rolling motion on the external gear.

[0036] The gear tooth plate 2 has a neck ring 2.1 concentric with the external gear teeth. The angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment further includes a wedge 5 that is supported by the neck ring 2.1 through its curved inner surface and supports the ring gear tooth plate 3 through its curved outer surface. Correspondingly, the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment further includes a friction bearing 4 disposed between the curved outer surface of the wedge 5 and the central hole 3.1 of the ring gear tooth plate 3. Further, the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment further includes a drive cam 6, the axially extending cylindrical section 6.1 of which is inserted into the neck ring 2.1, and a boring hole for accommodating and matching the drive shaft for braking the drive cam 6 through the drive shaft is provided at the central portion. In this embodiment, the drive cam 6 is a metal component. Further, the drive cam 6 also has a drive section 6.2. The wedge 5 is composed of two wedge sections, and the drive section 6.2 of the drive cam 6 is inserted into the clearance between the narrow side surfaces of the two wedge sections. Also, the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment further includes a spring 7, both ends of which are respectively connected to the mutually opposed wide side surfaces of the two wedge sections, whereby the spring 7 acts on the wedge sections in the circumferential direction to forcibly separate the two wedge sections. In this way, the eccentric member is restricted by the fitting of the wedge 5 and the spring 7, which is used for press-fitting the external gear teeth of the gear tooth plate 2 into the internal gear ring of the ring gear tooth plate 3 in a meshed state. Further, the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment further includes a cover 8 that covers the drive cam 6 and is connected and fixed to the ring gear tooth plate 3.

[0037] The specific assembly process of the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment is as follows. The friction bearing 4 is press-fitted into the central hole 3.1 of the ring gear rack 3, and the interference fit is made firm; the external teeth gear of the gear rack 2 meshes with the internal tooth ring of the ring gear rack 3; the cylindrical section 6.1 of the drive cam 6 is embedded in the neck ring 2.1 of the gear rack 2; both ends of the spring 7 are respectively inserted into the holes on the wide sides of the two wedge sections of the wedge 5; the wedge 5 is arranged in the space formed by the friction bearing 4 and the neck ring 2.1 and maintains close contact; the hoop 1 and the ring gear rack 3 are connected by welding; the cover 8 is welded and connected to the ring gear rack 3.

[0038] The specific operation mechanism of the angle adjuster for preventing the intrusion of the electrophoresis liquid according to this embodiment is as follows. In the process of driving by rotating the drive shaft, torque is first transmitted to the drive cam 6, and then transmitted to the eccentric member (formed by the wedge 5 and the spring 7) through the drive section 6.2. The eccentric member slides along the friction bearing 4 to shift the eccentric direction. Therefore, by shifting the meshing position of the external teeth gear of the gear rack 2 with respect to the internal tooth ring of the ring gear rack 3, the inclination of the backrest can be continuously and variably adjusted.

[0039] In particular, the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention forms the hoop 1, thereby controlling the gap between the hoop 1 and the gear rack 2. The electrophoresis-preventing liquid grease laid in the gap has not only a lubricating function but also the property of being difficult to be removed even after cleaning, and can prevent impurities such as electrophoresis liquid from intruding into the inside of the angle adjuster from the path A, as shown in Figure 3.

[0040] As described above, one end of the hoop 1 is fixedly connected to the ring gear tooth plate 3, and the axial movement of the gear tooth plate 2 is restricted through the other end. As shown in FIG. 4, the short side of the hoop 1 is welded and fixed to the end of the ring gear tooth plate 3 through the laser welding seam 1.1. As shown in FIG. 5, before the hoop is formed, the inner end face 1.2 of the hoop 1 is parallel to the outer end face 2.2 of the gear tooth plate 2. The forming operation on the hoop includes bending the inner end of the hoop 1 towards the outer end face 2.2 of the gear tooth plate 2 to form a smaller clearance fit with the outer end face 2.2 of the gear tooth plate 2. As shown in FIG. 6, after the hoop is formed, the inner end of the hoop 1 forms a smaller clearance fit 1.3 with the gear tooth plate 2, and by butting the anti-electrophoresis liquid grease, it is easier to form a sealed space, preventing the electrophoresis liquid from entering the inside of the angle adjuster from path A, and at the same time reducing the axial runout of the gear tooth plate.

[0041] In particular, the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention can prevent impurities such as the electrophoresis liquid from entering the inside of the angle adjuster from path B by controlling the gap between the drive cam 6 and the gear tooth plate 2, as shown in FIG. 3.

[0042] As shown in FIG. 7, the cylindrical section 6.1 of the drive cam 6 is inserted into the neck ring 2.1 of the gear tooth plate 2, and the two are fitted through the gap of the cylindrical surface. The anti-electrophoresis liquid grease laid in the gap has not only a lubricating function but also the property of being difficult to be removed even after cleaning. On the premise of ensuring the normal function of the angle adjuster, it prevents the anti-electrophoresis liquid from entering the inside of the angle adjuster from path B and functions as a single sealing effect. To further improve the sealing performance, an oil storage tank 6.3 for filling the anti-electrophoresis liquid grease is provided on the corner end face of the drive cam 6. On the one hand, it can lubricate the contact surface between the drive cam 6 and the gear tooth plate 2, and on the other hand, it functions as a double sealing effect, thereby preventing the electrophoresis liquid from entering the inside of the angle adjuster from path B.

[0043] In particular, the gap between both ends of the cover 8 of the angle adjuster for preventing the intrusion of the electrophoresis liquid of the present invention can prevent impurities such as the electrophoresis liquid from entering the inside of the angle adjuster from the paths C and D, as shown in FIG. 3.

[0044] As shown in FIG. 8, the cover 8 has a substantially L-shaped cross section, and both ends thereof have an outer flange 8.1 and an inner flange 8.2 extending in the radial direction, respectively. In particular, the cover 8 is a metal cover, and is welded and fixed to the ring gear toothed plate 3 via the outer flange 8.1 and the laser welding seam 8.3. As shown in FIG. 9, it fundamentally avoids impurities such as the electrophoresis liquid from entering the inside of the angle adjuster from the path C (see FIG. 3). Specifically, the outer flange 8.1 of the cover 8 is fitted to the inner edge of the boss 3.1 of the ring gear toothed plate 3, that is, the lower surface of the outer flange 8.1 is attached to the upper surface of the ring gear toothed plate 3 and joined to the surface using laser penetration welding, thereby preventing the electrophoresis liquid from entering the inside of the core component from the path C (see FIG. 3). The cover 8 is a metal cover, which can avoid deformation, warping, etc. due to environmental changes, makes it easier to control the gap between the cover 8 and the drive cam 6, and prevents impurities such as the electrophoresis liquid from entering the inside of the core component from the path D (see FIG. 3). Specifically, the inner flange 8.2 of the cover 8 is joined to the surface of the drive cam 6. The anti-electrophoresis liquid grease laid in the gap has not only a lubricating function but also the property of being difficult to be washed away, and can prevent the electrophoresis liquid from entering the inside of the core component from the path D.

[0045] The above is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Various changes can be made to the above embodiment of the present invention. That is, all simple, equivalent changes and modifications made in accordance with the scope of the claims and the content of the specification of the present invention are included in the protection scope of the patent of the present invention. The content not detailed in the present invention is the content of the prior art.

Claims

1. An angle adjuster for preventing the intrusion of electrophoresis liquid, comprising: A gear rack (2) and a ring gear rack (3) that are rotatable relative to each other; A hoop (1) used to integrally hold the gear rack (2) and the ring gear rack (3); One end of the hoop (1) is fixedly connected to the ring gear rack (3); The other end of the hoop (1) is bent toward the gear rack (2) to form a clearance fit with the gear rack (2), and is characterized in that it is an angle adjuster for preventing the intrusion of electrophoresis liquid.

2. The short side of the hoop (1) is welded and fixed to the end of the ring gear rack (3) via a laser welding seam (1.1), and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 1.

3. Before the hoop (1) is formed, the inner end surface (1.2) of the hoop (1) is parallel to the outer end surface (2.2) of the gear rack (2). After the hoop (1) is formed, the clearance formed between the hoop (1) and the gear rack (2) is reduced, and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 1.

4. The angle adjuster for preventing the intrusion of electrophoresis liquid further includes an eccentric member (5, 7) driven by the drive cam (6). The eccentric member (5, 7) rotates in the circumferential direction to drive the relative rotational movement between the gear rack (2) and the ring gear rack (3), and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 1.

5. The gear rack (2) has external teeth, and the ring gear rack (3) has internal teeth. The gear rack (2) and the ring gear rack (3) are connected to each other via the external teeth and the internal teeth that mesh with each other. The gear rack (2) has a neck ring (2.1) concentric with the external teeth, and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 4.

6. The drive cam (6) has a cylindrical section (6.1) that axially inserts and extends into the neck ring (2.1), and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 5.

7. An oil storage tank (6.3) is provided on the corner end surface of the drive cam (6), and is characterized in that it is the angle adjuster for preventing the intrusion of electrophoresis liquid according to Claim 6.

8. ​ ​ ​ ​ ​ ​ The eccentric members (5, 7) are restricted to cooperate by the wedge (5) and the spring (7) such that the external gear teeth of the gear tooth plate (2) are press-fitted into the internal tooth ring of the ring gear tooth plate (3) at the meshing position. The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 5.

9. The wedge (5) is supported on the neck ring (2.1) by its curved inner surface and supports the ring gear tooth plate (3) by its curved outer surface. The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 8.

10. The angle adjuster for preventing the intrusion of the electrophoresis liquid further includes a friction bearing (4) disposed between the curved outer surface of the wedge (5) and the central hole (3.1) of the ring gear tooth plate (3). The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 9.

11. The drive cam (6) has a drive section (6.2), the wedge (5) is composed of two wedge sections, the drive section (6.2) is inserted into the clearance between the narrow side surfaces of the two wedge sections, and both ends of the spring (7) are respectively connected to the wide side surfaces of the two wedge sections facing each other, whereby the spring (7) acts on the wedge sections in the circumferential direction to forcibly separate the two wedge sections. The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 8.

12. The angle adjuster for preventing the intrusion of the electrophoresis liquid further includes a cover (8) covered by the drive cam (6) and connected and fixed to the ring gear tooth plate (3). The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 4.

13. The cover (8) is a metal cover. The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 12.

14. The cover (8) is welded and fixed to the ring gear tooth plate (3) via an outer flange (8.1) and a laser welding seam (8.3). The angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 12.

15. The lower surface of the outer flange (8.1) is fitted and welded to the upper surface of the ring gear tooth plate (3). Angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 14

16. The cover (8) is attached to the surface of the drive cam (6) via an inner flange (8.2). Angle adjuster for preventing the intrusion of the electrophoresis liquid according to claim 12

17. A method for assembling an angle adjuster for preventing the intrusion of the electrophoresis liquid according to any one of claims 1 to 16, comprising: assembling by meshing the external teeth gear of the gear rack (2) with the internal teeth ring of the ring gear rack (3); fixingly connecting one end of the hoop (1) to the ring gear rack (3); bending the other end of the hoop (1) towards the gear rack (2) to form a clearance fit with the gear rack (2).

18. Characterized in that an electrophoresis-preventing liquid grease is laid in the gap The assembling method according to claim 17

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