Fisheye lens for vehicle

Abstract

The present application discloses a fisheye lens for a vehicle, belonging to the technical field of lenses, which comprises a lens barrel, a mounting sleeve, a first rotating ring, a second rotating ring, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the end face of the first lens fits the end face of the lens barrel, and the fifth lens, the sixth lens and the seventh lens are all slidably mounted in the second inner hole of the lens barrel; the second rotating ring has a third inner hole, the second rotating ring is threadedly connected to an end of the lens barrel away from the first rotating ring, and the third inner hole has a limiting structure, and the limiting structure axially abuts against the seventh lens to force the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens to move axially toward the first lens. The present application can improve the assembly stability of each lens and reduce the bending deformation of the first lens.

Description

Technical Field

[0001] The present application belongs to the technical field of lenses and relates to a fisheye lens for a vehicle. Background Art

[0002] Existing fisheye lenses for cars Fig.14 As shown, it includes a lens barrel 10, a sealing ring 113, a mounting sleeve 108, a first rotating ring 110, a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106 and a seventh lens 107, wherein the fifth lens 105, the sixth lens 106 and the seventh lens 107 are all slidably mounted in the second inner hole 112 of the lens barrel 10, the third lens 103 and the fourth lens 104 are both mounted in the mounting sleeve 108, the mounting sleeve 108 is slidably mounted in the first inner hole 111 of the lens barrel 10, the second lens 102 is slidably mounted in the first inner hole 111 of the lens barrel 10, and the second lens 102 is axially abutted against the third lens 103, and the first rotating ring 110 has a ring protrusion 1101.

[0003] During assembly, the fifth lens 105, the sixth lens 106 and the seventh lens 107 are slidably installed into the second inner hole 112, and the seventh lens 107 is limited by the annular protrusion 114 at the end of the lens barrel 10, and then the mounting sleeve 108, the third lens 103, the fourth lens 104 and the second lens 102 are slidably installed into the first inner hole 111 in sequence, ensuring that the end of the mounting sleeve 108 abuts against the fifth lens 105, and the sealing ring 113 is installed, and then the first rotating ring 110 is connected to the lens barrel. The first lens 101 is threadedly connected to one end of the lens barrel 10, and the first rotating ring 110 fixes the first lens 101 to one end of the lens barrel 10 through the annular protrusion 1101. The end surface of the first lens 101 is in contact with the end surface of the lens barrel 10, and the first lens 101 is indirectly axially pressed against the second lens 102 by pressing the sealing ring 113, so that the third lens 103, the fourth lens 104, the fifth lens 105, the sixth lens 106 and the seventh lens 107 are pressed against the annular protrusion 114 in sequence, thereby completing the assembly.

[0004] However, the existing fisheye lens for automobiles has the following defects: when the end face of the first lens fits with the end face of the lens barrel, the end face of the lens barrel limits the screw-in distance of the first lens and the first rotating ring, so that the degree of compression of the sealing ring by the first lens is limited, and the small degree of deformation of the sealing ring is easy to cause insufficient pressing force on the subsequent lens, which is easy to cause the subsequent lens to loosen; if the sealing ring is thickened to ensure that the sealing ring has sufficient deformation, it is easy to cause a gap between the end face of the first lens and the end face of the lens barrel, so that the supporting effect of the first lens is deteriorated, and the first lens is easy to deform and bend.

[0005] Secondly, the installation accuracy of the sealing ring is difficult to control, which makes the pressure applied by the sealing ring uneven, affecting the stability of the subsequent lens installation. Summary of the invention

[0006] Aiming at the problem of poor assembly stability of existing lenses, a fisheye lens for a vehicle is provided.

[0007] The present application provides a fisheye lens for a vehicle, which is implemented by the following technical solutions:

[0008] A fisheye lens for a vehicle comprises a lens barrel, a mounting sleeve, a first rotating ring, a second rotating ring, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the third lens and the fourth lens are both mounted in the mounting sleeve, the mounting sleeve is slidably mounted in the first inner hole of the lens barrel, the second lens is slidably mounted in the first inner hole of the lens barrel, and the second lens is axially abutted against the third lens, the first rotating ring has an annular convexity, the first rotating ring is threadedly connected to one end of the lens barrel, the first rotating ring fixes the first lens to one end of the lens barrel through the annular convexity, and the end face of the first lens is in contact with the end face of the lens barrel; the fifth lens, the sixth lens and the seventh lens are all slidably mounted in the second inner hole of the lens barrel; the second rotating ring has a third inner hole, the second rotating ring is threadedly connected to one end of the lens barrel away from the first rotating ring, the third inner hole has a limiting structure, and the limiting structure is axially abutted against the seventh lens to force the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens to move axially toward the first lens.

[0009] According to the technical solution, during assembly, the mounting sleeve, the third lens, the fourth lens and the second lens are sequentially slidably installed into the first inner hole, and then the first rotating ring is connected with the thread of one end of the lens barrel through the first rotating ring, and the first lens is fixed to the one end of the lens barrel through the annular convexity, and the end surface of the first lens is fitted with the end surface of the lens barrel; then the fifth lens, the sixth lens and the seventh lens are slidably installed into the second inner hole; finally, the second rotating ring is screwed in, and the limiting structure of the second rotating ring moves axially, and the limiting structure axially abuts against the seventh lens, so as to force the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens to move axially toward the first lens, ensure that the second lens abuts against the first lens, and the axial abutment between the lenses is stable, thereby completing the assembly.

[0010] That is, by providing the second rotating ring and the limiting structure, the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens are driven to move axially toward the first lens, ensuring that the second lens abuts against the first lens, so that the axial abutment between the lenses is stable and the force is relatively uniform, which greatly reduces the occurrence of looseness of the lenses, that is, improves the stability of assembly. At the same time, the first rotating ring pre-installs the first lens on the end face of the lens barrel, and the end face of the lens barrel has a good supporting effect on the first lens, so that the first lens is not easy to bend and deform.

[0011] Optionally, the limiting structure is configured as an abutment ring, the abutment ring is integrally connected to the second rotating ring, and the inner diameter of the abutment ring is smaller than the outer diameter of the seventh lens.

[0012] Through the above technical solution, as the second rotating ring is screwed in, the abutment ring will axially abut against the seventh lens, so as to force the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens to move axially toward the first lens, ensuring that the second lens abuts against the first lens and the axial abutment between the lenses is stable.

[0013] Optionally, the limiting structure includes a retaining member and a plurality of elastic members, wherein the elastic members are evenly arranged along the circumference of the third inner hole, and both the elastic members and the retaining members are connected to the hole wall of the third inner hole, wherein the elastic member is used to axially elastically abut against the seventh lens, and as the second rotating ring is screwed in, the elastic force and elastic deformation degree of the elastic member gradually increase; the retaining member is used to maintain the elastic deformation state of the elastic member.

[0014] Through the above technical solution, as the second rotating ring is screwed in, the elastic force and elastic deformation degree of the elastic member gradually increase, that is, the axial abutment force applied by the elastic member to the seventh lens gradually increases, so that each lens can be gradually pressed in a relatively gentle manner. At the same time, the screwing distance of the second rotating ring is increased in disguise, thereby greatly improving the screwing tolerance of the second rotating ring, making the pressing force of each lens more controllable, so as to reduce the occurrence of damage and bending of each lens caused by excessive pressing force. In addition, by setting a retaining member, after the elastic member completes the pressing of each lens, the retaining member maintains the elastic deformation state of the elastic member, that is, the entire limiting structure becomes a rigid structure, which is not easily affected by external forces and causes the abutment elastic force of the elastic member to fail or change, thereby greatly improving the assembly stability between each lens and the stability of subsequent use.

[0015] Optionally, the elastic member includes a curved piece, one end of which is connected to the wall of the third inner hole, and the other end of the curved piece is set as an abutment end, the outer convex curved surface of the curved piece is tangentially abutted with the surface of the seventh lens, and the abutment end of the curved piece is away from the seventh lens relative to the fixed end of the curved piece; the retaining member is a retaining ring, which is coaxially fixed to the third inner hole, and the retaining ring is away from the seventh lens relative to the curved piece; as the second rotating ring is screwed in, the curved piece elastically deforms, and the abutment end of the curved piece moves in a direction away from the axis of the third inner hole and away from the seventh lens, and the abutment end of the curved piece abuts at the angle between the retaining ring and the wall of the third inner hole.

[0016] Through the above technical solution, during the elastic deformation of the curved sheet, the axial abutment force applied by the curved sheet to the seventh lens gradually increases, so that each lens can be gradually pressed against each other relatively gently. At the same time, the precession distance of the second rotating ring is increased in disguise, thereby greatly improving the precession tolerance of the second rotating ring, making the abutment force of each lens more controllable, so as to reduce the situation where each lens is damaged and bent due to excessive abutment force.

[0017] Furthermore, when the abutting end of the curved piece abuts against the angle between the retaining ring and the wall of the third inner hole, the curved piece forms a relatively stable arched structure, which increases the resistance of the second rotating ring and effectively feeds back to the torque of the second rotating ring, thereby terminating the continued rotation of the second rotating ring, thereby avoiding damage and bending of each lens due to excessive rotation of the second rotating ring.

[0018] Optionally, the elastic member includes a curved piece, one end of which is connected to the hole wall of the third inner hole, and the other end of the curved piece is set as an abutment end, the abutment end is provided with a first one-way tooth, the outer convex curved surface of the curved piece is tangentially abutted with the surface of the seventh lens, and the abutment end of the curved piece is away from the seventh lens relative to the fixed end of the curved piece; the retaining member is a retaining ring, which is coaxially fixed to the third inner hole, the retaining ring is away from the seventh lens relative to the curved piece, and a plurality of second one-way teeth are fixed on the end face of the retaining ring, and each second one-way tooth is equidistantly arranged along the radial direction of the retaining ring; as the second rotating ring is rotated inwardly, the curved piece elastically deforms, and the abutment end of the curved piece moves in a direction away from the axis of the third inner hole and away from the seventh lens, the first one-way tooth of the curved piece is meshed with each second one-way tooth in turn, and the second one-way tooth is used to limit the one-way disengagement of the first one-way tooth.

[0019] Through the above technical scheme, the elastic deformation of the curved plate is utilized so that the first one-way teeth thereon can mesh with the second one-way teeth of the retaining ring in sequence, that is, mesh with different second one-way teeth, so as to limit the different bending degrees of the curved plate, so as to limit the pressing force thereof on the seventh lens, so that the pressing force is divided into multiple gears, and the scope of application is wider.

[0020] Optionally, the elastic member includes a first sheet, a second sheet and a third sheet, wherein the length direction of the second sheet is the axial direction of the third inner hole, the first sheet and the second sheet are parallel, one end of the first sheet and one end of the third sheet are respectively integrally connected to two ends of the second sheet, the other end of the first sheet and the other end of the third sheet are both integrally connected to the hole wall of the third inner hole, the first sheet is arranged relative to the second sheet close to the seventh lens, and the connection between the first sheet and the second sheet, the connection between the second sheet and the third sheet, and the connection between the third sheet and the third sheet are The connection points between the hole walls of the inner hole are all provided with deformable grooves, and a rib is vertically fixed on the back side of the first sheet; the connection point between the first sheet and the second sheet is set as a contact point, and the contact point axially elastically contacts the surface of the seventh lens; as the second rotating ring is rotated, the first sheet deflects in the direction away from the seventh lens, and drives the second sheet to move and the third sheet to deflect in the direction away from the seventh lens, and the position of the contact point on the surface of the seventh lens moves in the direction close to the axis of the third inner hole; the retaining member is used to maintain the position state of the second sheet and / or the third sheet.

[0021] Through the above technical solution, as the second rotating ring is rotated inward, the first sheet deflects in the direction away from the seventh lens, and drives the second sheet to move and the third sheet to deflect in the direction away from the seventh lens, that is, during the elastic deflection of the first sheet, the axial abutment force applied by the first sheet to the seventh lens gradually increases, so that the lenses can be gradually pressed together relatively gently. At the same time, the position of the abutment point on the surface of the seventh lens moves in the direction close to the axis of the third inner hole, that is, the abutment point plays a centering role on the seventh lens to improve the stability of the seventh lens. Finally, the retaining member maintains the position state of the second sheet and / or the third sheet, that is, the entire limiting structure becomes a rigid structure, which is not easily affected by external forces to cause the abutment elastic force of the first sheet to fail or change, thereby greatly improving the assembly stability between the lenses and the stability of subsequent use.

[0022] Secondly, by providing the ribs and the deformable grooves, the ribs enable the first sheet to be offset as a whole and not easily bent in the middle, while the deformable grooves can improve the deflection synchronization of the second sheet and the sheet.

[0023] Optionally, the retaining member includes a third plate fixed to the wall of the third inner hole, the third plate being coplanar with the cross-section of the third inner hole, and the third plate being away from the seventh lens relative to the third sheet; umbrella-shaped protrusions are integrally formed on both sides of the third plate, and the width of the third sheet gradually decreases along the axial direction away from the third inner hole; as the second rotating ring is rotated in, the first sheet deflects in the direction away from the seventh lens, and drives the second sheet to move and the third sheet to deflect in the direction away from the seventh lens, the third plate blocks the third sheet from continuing to deflect, and the two sides of the third sheet are respectively stuck in the two umbrella-shaped protrusions.

[0024] Through the above technical solution, by providing the third plate body and the umbrella-shaped protrusion, the third sheet body can be clamped more stably, so that the offset state of the first sheet body is limited and maintained.

[0025] Optionally, the retaining member includes a plurality of L-shaped plates, which are arranged in a one-to-one correspondence with the elastic member, and the L-shaped plate consists of a first plate body and a second plate body, one end of the first plate body is connected to one end of the second plate body, and the other end of the first plate body is fixed to the hole wall of the third inner hole, the cross-section of the first plate body and the third inner hole are coplanar, the first plate body is away from the seventh lens relative to the third plate body, and the second plate body is close to the axis of the third inner hole relative to the second plate body, the surface of the second plate body is provided with a plurality of third one-way teeth arranged at intervals along its own length direction, and the second plate body is fixed with a fourth one-way tooth; as the second rotating ring is rotated inwardly, the first plate body deflects in a direction away from the seventh lens, and drives the second plate body to move and the third plate body to deflect in a direction away from the seventh lens, the fourth one-way teeth of the second plate body are meshed with each third one-way teeth in turn, and the third one-way teeth are used to limit the one-way disengagement of the fourth one-way teeth; the first plate body is used to prevent the third plate body from continuing to deflect.

[0026] Through the above technical solution, when the first sheet is used to drive the second sheet to move, the fourth one-way teeth of the second sheet can be meshed with the fourth one-way teeth of the second plate in sequence, that is, meshed with different fourth one-way teeth, so as to limit different offset states of the first sheet, so as to limit its pressing force on the seventh lens, so that the pressing force is divided into multiple gears, and the application range is wider.

[0027] Optionally, the limiting structure also includes an injection molded body, and the outer peripheral surface of the second rotating ring is penetrated by an injection hole and an overflow hole connected to the third inner hole; the injection molded body is annular, the injection molded body is coaxially arranged with the third inner hole, the injection molded body wraps the elastic part and the retaining part, and the injection molded body fits the surface of the seventh lens.

[0028] Through the above technical scheme, by setting an injection molding body, after the retaining member maintains the elastic deformation state of the elastic member, the mold rod is inserted into the third inner hole, the mold rod abuts on the seventh lens, and the mold rod and the inner wall of the third inner hole form an annular mold cavity. The material is injected into the mold cavity through the injection hole, and the material solidifies to form an injection molding body. The injection molding body wraps the elastic member and the retaining member, and the injection molding body fits the surface of the seventh lens, so that the entire limiting structure becomes a rigid structure, which is not easily affected by external forces to cause the abutting elastic force of the elastic member to fail or the abutting elastic force to change, thereby greatly improving the assembly stability between the lenses and the stability of subsequent use, and the abutting area of ​​the limiting structure for the seventh lens is greatly increased, and the assembly stability is further improved.

[0029] Optionally, the end surface of the injection-molded body away from the seventh lens has a tapered surface, and the diameter of the tapered surface gradually increases in a direction away from the seventh lens.

[0030] The beneficial effects of this application are:

[0031] 1. By setting a second rotating ring and a limiting structure, the sixth lens, the fifth lens, the mounting sleeve, the fourth lens, the third lens and the second lens are driven to move axially toward the first lens, ensuring that the second lens abuts against the first lens, so that the axial abutment between the lenses is stable and the force is relatively uniform, which greatly reduces the occurrence of looseness of the lenses, that is, improves the stability of assembly. At the same time, the first rotating ring pre-installs the first lens on the end face of the lens barrel, and the end face of the lens barrel has a good supporting effect on the first lens, so that the first lens is not easy to bend and deform;

[0032] 2. By setting the elastic member and the retaining member, as the second rotating ring is screwed in, the elastic force and elastic deformation degree of the elastic member are gradually increased, that is, the axial abutment force applied by the elastic member to the seventh lens is gradually increased, so that each lens can be gradually pressed in a relatively gentle manner. At the same time, the screwing distance of the second rotating ring is increased in disguise, thereby greatly improving the screwing tolerance of the second rotating ring, making the pressing force of each lens more controllable, so as to reduce the occurrence of damage and bending of each lens caused by excessive pressing force. In addition, by setting the retaining member, after the elastic member completes the pressing of each lens, the retaining member maintains the elastic deformation state of the elastic member, that is, the entire limiting structure becomes a rigid structure, which is not easily affected by external forces and causes the abutment elastic force of the elastic member to fail or change, thereby greatly improving the assembly stability between each lens and the stability of subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional view of the overall structure of Example 1.

[0034] Figure 2 It is a cross-sectional view of the overall structure of Example 2.

[0035] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0036] Figure 4 It is a schematic diagram of Example 2 for demonstrating the elastic deformation process of the elastic member.

[0037] Figure 5 It is a partial cross-sectional view of the limiting structure of Example 3.

[0038] Figure 6 It is a cross-sectional view of the overall structure of Example 4.

[0039] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0040] Figure 8 It is a schematic diagram of the elastic member of Example 4.

[0041] Fig. 9 It is a schematic diagram of Example 4 for demonstrating the elastic deformation process of the elastic member.

[0042] Fig.10 It is a partial cross-sectional view of the limiting structure of Example 5.

[0043] Fig.11 It is a schematic diagram of Example 5 for demonstrating the elastic deformation process of the elastic member.

[0044] Fig.12 It is a cross-sectional view of the overall structure of Example 6.

[0045] Fig.13 yes Fig.12 A partial enlarged view of point C in the middle.

[0046] Fig.14 It is a cross-sectional view of an existing fisheye lens.

[0047] Description of reference numerals: 1, elastic member; 2, retaining member; 3, injection molding; 10, lens barrel; 101, first lens; 102, second lens; 103, third lens; 104, fourth lens; 105, fifth lens; 106, sixth lens; 107, seventh lens; 108, mounting sleeve; 109, ring sleeve; 110, first rotating ring; 1101, annular protrusion; 120, second rotating ring; 111, first inner hole; 112, second inner hole; 113, sealing ring; 114, annular protrusion; 12 1. third inner hole; 1201. overflow hole; 1202. injection hole; 20. abutment ring; 11. curved plate; 115. abutment end; 116. first one-way tooth; 12. first sheet body; 13. second sheet body; 131. rib plate; 132. deformable groove; 133. fourth one-way tooth; 14. third sheet body; 21. retaining ring; 211. second one-way tooth; 22. third plate body; 221. umbrella-shaped protrusion; 23. first plate body; 24. second plate body; 241. third one-way tooth; 30. mold rod. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the attached Figure 1-Figure 14 Shown in.

[0049] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0050] Example 1

[0051] Embodiment 1 discloses a fisheye lens for a vehicle, such as Figure 1 As shown, the automotive fisheye lens includes a lens barrel 10, a mounting sleeve 108, a first rotating ring 110, a second rotating ring 120, a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, a fifth lens 105, a sixth lens 106 and a seventh lens 107.

[0052] The lens barrel 10 has a first inner hole 111 and a second inner hole 112, wherein the diameter of the first inner hole 111 is larger than that of the second inner hole 112, the first inner hole 111 and the second inner hole 112 are coaxially and connected, the third lens 103 and the fourth lens 104 are both coaxially installed in the mounting sleeve 108, the mounting sleeve 108 is slidably installed in the first inner hole 111 of the lens barrel 10, the second lens 102 is slidably installed in the first inner hole 111 of the lens barrel 10, and the second lens 102 is axially abutted against the third lens 103.

[0053] The first rotating ring 110 has an annular protrusion 1101 , and is threadedly connected to one end of the lens barrel 10 . The first rotating ring 110 fixes the first lens 101 to one end of the lens barrel 10 via the annular protrusion 1101 , and the end surface of the first lens 101 is in contact with the end surface of the lens barrel 10 .

[0054] The fifth lens 105 , the sixth lens 106 and the seventh lens 107 are all slidably installed in the second inner hole 112 of the lens barrel 10 , and a ring sleeve 109 is coaxially slidably installed in the second inner hole 112 . The fifth lens 105 and the sixth lens 106 are abutted against each other through the ring sleeve 109 , and the fifth lens 105 abuts against one end of the mounting sleeve 108 .

[0055] The second rotating ring 120 is made of plastic and has a third inner hole 121. The second rotating ring 120 is threadedly connected to the end of the lens barrel 10 away from the first rotating ring 110. The third inner hole 121 has a limiting structure, which is configured as an abutting ring 20. The abutting ring 20 is integrally formed and connected with the second rotating ring 120. The inner diameter of the abutting ring 20 is smaller than the outer diameter of the seventh lens 107. The abutting ring 20 axially abuts against the seventh lens 107.

[0056] During assembly, the mounting sleeve 108, the third lens 103, the fourth lens 104 and the second lens 102 are first slidably installed in the first inner hole 111 in sequence, and then the first rotating ring 110 is connected to the thread of one end of the lens barrel 10, and the first rotating ring 110 fixes the first lens 101 to one end of the lens barrel 10 through the annular protrusion 1101, and the end surface of the first lens 101 is in contact with the end surface of the lens barrel 10; then the fifth lens 105, the sixth lens 106 and the seventh lens 107 are slidably installed in the first inner hole 111. Finally, the second rotating ring 120 is screwed in, and the abutting ring 20 of the second rotating ring 120 moves axially, and the abutting ring 20 axially abuts against the seventh lens 107, so as to force the sixth lens 106, the fifth lens 105, the mounting sleeve 108, the fourth lens 104, the third lens 103 and the second lens 102 to move axially toward the first lens 101, ensuring that the second lens 102 abuts against the first lens 101, and ensuring that the axial abutment between the lenses is stable, thereby completing the assembly.

[0057] This makes the axial contact between the lenses stable and the force uniform, greatly reducing the looseness of the lenses, that is, improving the stability of the assembly. At the same time, the first rotating ring 110 fixes the first lens 101 on the end face of the lens barrel 10 in advance, and the end face of the lens barrel 10 has a good supporting effect on the first lens 101, so that the first lens 101 is not easy to bend and deform.

[0058] Example 2

[0059] The difference between Example 2 and Example 1 is that Figure 2 , Figure 3 As shown, the limiting structure includes a retaining member 2 and a plurality of elastic members 1 , wherein the elastic members 1 are evenly arranged along the circumference of the third inner hole 121 , and both the elastic members 1 and the retaining member 2 are connected to the hole wall of the third inner hole 121 .

[0060] In this embodiment, the elastic member 1 includes a curved piece 11, which is made of plastic. One end of the curved piece 11 is integrally connected to the hole wall of the third inner hole 121, and the other end of the curved piece 11 is set as a butt end 115. The outer convex curved surface of the curved piece 11 is tangentially abutted with the surface of the seventh lens 107, and the butt end 115 of the curved piece 11 is set away from the seventh lens 107 relative to the fixed end of the curved piece 11.

[0061] The retaining member 2 is used to maintain the elastic deformation state of the elastic member 1. In this embodiment, the retaining member 2 is a retaining ring 21. The retaining ring 21 is coaxially fixed with the third inner hole 121. The retaining ring 21 is away from the seventh lens 107 relative to the curved plate 11.

[0062] As the second rotating ring 120 rotates forward (see Figure 4 , Figure 4 The arrows indicate the precession direction of the second rotating ring 120 and the elastic deformation direction of the curved piece 11 respectively), the curved piece 11 is gradually elastically bent, that is, the elastic force applied by the curved piece 11 to the seventh lens 107 is gradually increased, so that each lens can be gradually pressed against each other relatively gently. At the same time, the precession distance of the second rotating ring 120 is increased in disguise, thereby greatly improving the precession tolerance of the second rotating ring 120, making the pressing force of each lens more controllable, so as to reduce the situation where each lens is damaged and bent due to excessive pressing force.

[0063] At the same time, the elastic deformation of the curved piece 11 becomes larger and larger, and the abutting end 115 of the curved piece 11 gradually moves away from the axis of the third inner hole 121 and away from the seventh lens 107, until the abutting end 115 of the curved piece 11 abuts against the angle between the retaining ring 21 and the wall of the third inner hole 121. At this time, the curved piece 11 forms a relatively stable arch structure, which increases the rotation resistance of the second rotating ring 120, forming effective feedback, which is convenient for terminating the continued rotation of the second rotating ring 120, thereby avoiding the damage and bending of each lens due to excessive rotation of the second rotating ring 120.

[0064] Moreover, under the action of the retaining ring 21, the curved piece 11 becomes a stable arch-shaped structure, that is, the retaining ring 21 maintains the elastic deformation state of the curved piece 11, so that the entire limiting structure becomes a rigid structure, which is not easily affected by external forces and causes the abutting elastic force of the elastic part 1 to fail or change, thereby greatly improving the assembly stability between the lenses and the stability of subsequent use.

[0065] Example 3

[0066] The difference between Example 3 and Example 2 is that Figure 5 As shown, a first one-way tooth 116 is fixed to the abutting end 115 of the curved piece 11 , and a plurality of second one-way teeth 211 are fixed to the end surface of the retaining ring 21 , and the second one-way teeth 211 are arranged equidistantly along the radial direction of the retaining ring 21 .

[0067] The cross-sections of the first one-way tooth 116 and the second one-way tooth 211 are both right-angled triangles, so that when the first one-way tooth 116 moves forward relative to the second one-way tooth 211, the first one-way tooth 116 can avoid the second one-way tooth 211 to ensure stable forward movement of the first one-way tooth 116; when the first one-way tooth 116 moves reversely relative to the second one-way tooth 211, the second one-way tooth 211 prevents the first one-way tooth 116 from moving reversely.

[0068] As the second rotating ring 120 rotates inward, the curved sheet 11 is elastically deformed, and the abutting end 115 of the curved sheet 11 gradually moves in a direction away from the axis of the third inner hole 121 and away from the seventh lens 107. During this process, the first one-way teeth 116 of the curved sheet 11 are meshed with the second one-way teeth 211 in sequence, and the second one-way teeth 211 limit the disengagement of the first one-way teeth 116, that is, when the first one-way teeth 116 are meshed with the second one-way teeth 211 at different radial positions, the degree of bending of the curved sheet 11 is different and is maintained. Therefore, the curved sheet 11 with different degrees of elastic deformation has different pressing forces on the seventh lens 107, so that the pressing force is divided into multiple gears, which has a wider range of applications.

[0069] Example 4

[0070] The difference between Example 4 and Example 2 is that Figure 6 , Figure 7 , Figure 8 As shown, the elastic member 1 includes a first sheet 12, a second sheet 13 and a third sheet 14, wherein the length direction of the second sheet 13 is the axial direction of the third inner hole 121, the first sheet 12 and the second sheet 13 are parallel, one end of the first sheet 12 and one end of the third sheet 14 are respectively integrally connected to the two ends of the second sheet 13, the other end of the first sheet 12 and the other end of the third sheet 14 are both integrally connected to the hole wall of the third inner hole 121, and the first sheet 12 is arranged relative to the second sheet 13 close to the seventh lens 107.

[0071] A rib plate 131 is vertically fixed to the back of the first sheet 12 . The rib plate 131 extends along the length direction of the first sheet 12 . The rib plate 131 can enable the first sheet 12 to be offset as a whole and is not prone to bending in the middle.

[0072] The connection between the first sheet 12 and the second sheet 13, the connection between the second sheet 13 and the third sheet 14, and the connection between the third sheet 14 and the wall of the third inner hole 121 are all provided with deformable grooves 132, that is, the connection between the first sheet 12 and the second sheet 13, the connection between the second sheet 13 and the third sheet 14, and the connection between the third sheet 14 and the wall of the third inner hole 121 are extremely thin and are more prone to deformation and displacement.

[0073] The width of the third plate 14 gradually decreases along the axial direction away from the third inner hole 121 .

[0074] The connection point between the first sheet body 12 and the second sheet body 13 is set as a contact point, and the contact point elastically contacts the surface of the seventh lens 107 in the axial direction.

[0075] The retaining member 2 is used to maintain the position state of the second sheet 13 and / or the third sheet 14. In the present embodiment, the retaining member 2 is used to maintain the position state of the third sheet 14. The retaining member 2 includes a third plate 22 fixed to the wall of the third inner hole 121. The cross-section of the third plate 22 is coplanar with that of the third inner hole 121. The third plate 22 is away from the seventh lens 107 relative to the third sheet 14.

[0076] Umbrella-shaped protrusions 221 are integrally formed on both sides of the third plate body 22 .

[0077] As the second rotating ring 120 rotates forward (see Fig. 9 , Fig. 9The arrows respectively indicate the precession direction of the second rotating ring 120, the deflection directions of the first sheet 12 and the third sheet 14, and the moving direction of the second sheet 13). Under the reaction force of the seventh lens 107, the first sheet 12 elastically deflects in the direction away from the seventh lens 107, and drives the second sheet 13 to move and the third sheet 14 to deflect in the direction away from the seventh lens 107. That is, during the elastic deflection process of the first sheet 12, the elastic abutting force applied by the first sheet 12 to the seventh lens 107 gradually increases, so that the lenses can be gradually pressed together relatively gently. At the same time, the position of the abutting point on the surface of the seventh lens 107 gradually moves in the direction close to the axial center of the third inner hole 121, that is, the abutting point plays a centering role on the seventh lens 107, so as to improve the stability of the seventh lens 107.

[0078] When the third sheet 14 is offset to a state where it is coplanar with the cross section of the third inner hole 121, the third sheet 14 is fitted with the third plate 22, and the third plate 22 prevents the third sheet 14 and the first sheet 12 from continuing to offset, so that the resistance of the second rotating ring 120 increases, forming an effective feedback, which is convenient for stopping the continued rotation of the second rotating ring 120, thereby avoiding the situation where each lens is damaged and bent due to excessive rotation of the second rotating ring 120. In addition, the two sides of the third sheet 14 are respectively inserted into the two umbrella-shaped protrusions 221, that is, the umbrella-shaped protrusions 221 firmly clamp the third sheet 14 to limit and maintain the offset state of the first sheet 12, so that the entire limiting structure becomes a rigid structure, and the limiting structure is not easily affected by external forces to cause the abutting elastic force of the first sheet 12 to fail or change, thereby greatly improving the assembly stability between the lenses and the stability of subsequent use.

[0079] Example 5

[0080] The difference between Example 5 and Example 4 is that Fig.10 and Fig.11 As shown ( Fig.11 The arrows respectively indicate the screwing direction of the second rotating ring 120, the deflection direction of the first sheet 12 and the third sheet 14, and the moving direction of the second sheet 13), the retaining member 2 includes a plurality of L-shaped plates, the L-shaped plates are arranged one-to-one with the elastic member 1, the L-shaped plate is composed of a first plate body 23 and a second plate body 24, one end of the first plate body 23 is connected to one end of the second plate body 24, and the other end of the first plate body 23 is fixed to the hole wall of the third inner hole 121.

[0081] The cross-sections of the first plate 23 and the third inner hole 121 are coplanar. The first plate 23 is away from the seventh lens 107 relative to the third sheet 14. The second plate 24 is close to the axis of the third inner hole 121 relative to the second sheet 13. The surface of the second plate 24 is provided with a plurality of third one-way teeth 241 arranged at intervals along its length direction.

[0082] A fourth one-way tooth 133 is fixed on a surface of the second plate 13 facing the axis of the third inner hole 121 .

[0083] The cross-sections of the third one-way tooth 241 and the fourth one-way tooth 133 are both right-angled triangles, so that when the fourth one-way tooth 133 moves forward relative to the third one-way tooth 241, the fourth one-way tooth 133 can avoid the third one-way tooth 241, ensuring the stable forward movement of the fourth one-way tooth 133; when the fourth one-way tooth 133 moves reversely relative to the third one-way tooth 241, the third one-way tooth 241 prevents the fourth one-way tooth 133 from moving reversely.

[0084] As the second rotating ring 120 rotates inwardly, the first sheet 12 is elastically deflected in a direction away from the seventh lens 107, and drives the second sheet 13 to move and the third sheet 14 to deflect in a direction away from the seventh lens 107. The fourth one-way teeth 133 of the second sheet 13 are meshed with the third one-way teeth 241 in sequence, and the third one-way teeth 241 limit the one-way disengagement of the fourth one-way teeth 133, that is, when the fourth one-way teeth 133 are meshed with the third one-way teeth 241 at different radial positions, the elastic deflection angles of the first sheet 12 are different and maintained. Therefore, the first sheet 12 in different elastic deflection angle states has different pressing forces on the seventh lens 107, so that the pressing force is divided into multiple gears, which has a wider range of applications.

[0085] Example 6

[0086] Example 6 makes the following settings based on Example 2-5, such as Fig.12 , Fig.13 As shown, the limiting structure also includes an injection body 3, which is black. The outer peripheral surface of the second rotating ring 120 is penetrated by an injection hole 1202 and an overflow hole 1201 connected to the third inner hole 121.

[0087] After the retaining member 2 maintains the elastic deformation state of the elastic member 1, the mold rod 30 is inserted into the third inner hole 121. The end of the mold rod 30 is conical, and the mold rod 30 abuts against the seventh lens 107. The outer conical surface of the mold rod 30 and the inner wall of the third inner hole 121 form an annular sealed mold cavity.

[0088] The material is then injected into the mold cavity through the injection hole 1202 (excess material and air are discharged from the overflow hole 1201 ), the material solidifies to form the injection molded body 3 , and finally the mold rod 30 is pulled out.

[0089] At this time, the injection molding body 3 is annular, the injection molding body 3 is coaxially arranged with the third inner hole 121 , and the end face of the injection molding body 3 away from the seventh lens 107 is formed with a tapered surface, and the diameter of the tapered surface gradually increases in the direction away from the seventh lens 107 .

[0090] The injection-molded body 3 wraps the elastic member 1 and the retaining member 2, and the injection-molded body 3 fits the surface of the seventh lens 107, so that the entire limiting structure becomes a rigid structure, thereby greatly improving the assembly stability between the lenses and the stability of subsequent use, and the abutment area of ​​the limiting structure for the seventh lens 107 is greatly increased, so that the assembly stability is further improved.

[0091] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fisheye lens for a vehicle, characterized in that: The invention comprises a lens barrel (10), a mounting sleeve (108), a first rotating ring (110), a second rotating ring (120), a first lens (101), a second lens (102), a third lens (103), a fourth lens (104), a fifth lens (105), a sixth lens (106) and a seventh lens (107), wherein the third lens (103) and the fourth lens (104) are both mounted in the mounting sleeve (108), the mounting sleeve (108) is slidably mounted in a first inner hole (111) of the lens barrel (10), the second lens (102) is slidably mounted in the first inner hole (111) of the lens barrel (10), and the second lens (102) is axially abutted against the third lens (103). The first rotating ring (110) has an annular protrusion (1101), the first rotating ring (110) is threadedly connected to one end of the lens barrel (10), the first rotating ring (110) fixes the first lens (101) to one end of the lens barrel (10) through the annular protrusion (1101), and the end surface of the first lens (101) is in contact with the end surface of the lens barrel (10); the fifth lens (105), the sixth lens (106) and the seventh lens (107) are all slidably installed in the second inner hole (112) of the lens barrel (10); the second rotating ring (120) has a third inner hole (121), the second rotating ring (120) is threadedly connected to one end of the lens barrel (10) away from the first rotating ring (110), and the first rotating ring (120) is threadedly connected to one end of the lens barrel (10) away from the first rotating ring (110). The third inner hole (121) has a limiting structure, which is axially abutted against the seventh lens (107) to force the sixth lens (106), the fifth lens (105), the mounting sleeve (108), the fourth lens (104), the third lens (103) and the second lens (102) to move axially toward the first lens (101); the limiting structure comprises a retaining member (2) and a plurality of elastic members (1), wherein each elastic member (1) is evenly arranged along the circumference of the third inner hole (121), the elastic member (1) and the retaining member (2) are both connected to the hole wall of the third inner hole (121), wherein the elastic member (1) is used to axially elastically abut against the seventh lens (107), and as As the second rotating ring (120) is screwed inward, the elastic force and elastic deformation degree of the elastic member (1) are gradually increased; the retaining member (2) is used to maintain the elastic deformation state of the elastic member (1); the elastic member (1) comprises a curved sheet (11), one end of the curved sheet (11) is connected to the hole wall of the third inner hole (121), the other end of the curved sheet (11) is set as an abutment end (115), the abutment end (115) is provided with a first one-way tooth (116), the outer convex curved surface of the curved sheet (11) is tangentially abutted with the surface of the seventh lens (107), and the abutment end (115) of the curved sheet (11) is away from the seventh lens (107) relative to the fixed end of the curved sheet (11);The retaining member (2) is a retaining ring (21), the retaining ring (21) is coaxially fixed with the third inner hole (121), the retaining ring (21) is relatively far away from the seventh lens (107) relative to the curved sheet (11), and a plurality of second one-way teeth (211) are fixed on the end surface of the retaining ring (21), and each second one-way tooth (211) is arranged equidistantly along the radial direction of the retaining ring (21); as the second rotating ring (120) rotates inward, the curved sheet (11) elastically deforms, and the abutting end (115) of the curved sheet (11) moves in a direction away from the axis of the third inner hole (121) and away from the seventh lens (107), and the first one-way teeth (116) of the curved sheet (11) are meshed with each second one-way tooth (211) in sequence, and the second one-way teeth (211) are used to limit the one-way disengagement of the first one-way teeth (116). ; 2. The fisheye lens for a vehicle according to claim 1, characterized in that: The limiting structure is provided as an abutment ring (20), the abutment ring (20) is integrally formed and connected with the second rotating ring (120), and the inner diameter of the abutment ring (20) is smaller than the outer diameter of the seventh lens (107).

3. The fisheye lens for vehicle according to claim 1, characterized in that: The limiting structure also includes an injection molded body (3); an injection molded hole (1202) and an overflow hole (1201) connected to the third inner hole (121) are formed through the outer peripheral surface of the second rotating ring (120); the injection molded body (3) is annular, the injection molded body (3) and the third inner hole (121) are coaxially arranged, the injection molded body (3) wraps the elastic member (1) and the retaining member (2), and the injection molded body (3) is in contact with the surface of the seventh lens (107).

4. The fisheye lens for vehicle according to claim 3, characterized in that: The end face of the injection molded body (3) away from the seventh lens (107) has a tapered surface, and the diameter of the tapered surface gradually increases in a direction away from the seventh lens (107).

Images