Automobile lens press-fitting mechanism

Abstract

The invention discloses an automobile lens press fitting mechanism, and belongs to the technical field of press fitting. Comprising a mounting table used for mounting a lens, the top of the mounting table is fixedly connected with a positioning seat used for mounting a lamp holder, a feeding air cylinder is mounted in the positioning seat, the output end of the feeding air cylinder is provided with a piston rod in vertical sliding connection, the lens is mounted in the lamp holder through the piston rod, and a shell is arranged at the upper end of the lamp holder; the two sides of the shell are respectively provided with an elastic buckle used for fixing the lens. According to the automobile lens press-fitting mechanism, the technical problems that when an air cylinder pushes a lens to move upwards, the edge of the lens directly collides with an elastic buckle arranged on the inner wall of a lamp holder easily, and the edge of the lens is cracked, broken and even broken integrally due to local stress concentration are solved.

Description

Technical Field

[0001] This invention relates to the field of press-fitting technology, specifically to a press-fitting mechanism for automotive lenses. Background Technology

[0002] With the continuous development of automotive lighting technology, the structural design and assembly process of vehicle lights, as important safety and functional components of automobiles, are receiving increasing attention. In modern automotive headlights or signal lights, lenses (such as focusing lenses or beam-distributing lenses) are usually installed inside the lamp holder to achieve effective focusing, diffusion, or light distribution control of the light source in order to meet regulatory requirements and improve lighting performance.

[0003] Currently, in the automated assembly process of automotive lighting, lenses are installed by pressing them upwards from the bottom of the lamp holder. This method typically uses a linear drive device such as a cylinder to power the lens axially into the inner cavity of the lamp holder, securing it with a snap-fit ​​structure on the lamp holder. However, in actual production, it has been found that when the cylinder pushes the lens upwards, the lens edge is prone to direct collision with the elastic snap-fit ​​on the inner wall of the lamp holder. Since lenses are usually made of hard, transparent materials such as optical-grade polycarbonate (PC) or acrylic resin (PMMA), their impact resistance is limited. Especially under high-speed or high-pressure assembly conditions, localized stress concentration can easily lead to cracks, chipping, or even complete breakage of the lens edge.

[0004] The aforementioned problems not only result in a high scrap rate for parts, affecting production efficiency, but also may lead to safety hazards such as sealing failure and decreased optical performance in subsequent lamps due to lens breakage. Furthermore, reducing cylinder propulsion speed or pressure to avoid collisions significantly extends the assembly cycle time, making it difficult to meet the demands of high-cycle automated production lines.

[0005] Therefore, it is necessary to provide an automotive lens pressing mechanism to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide an automotive lens pressing mechanism to solve the problems mentioned in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an automotive lens pressing mechanism, including a mounting platform for mounting a lens, a positioning seat for mounting a lamp holder fixedly connected to the top of the mounting platform, a feeding cylinder installed in the positioning seat, a piston rod slidably connected to the output end of the feeding cylinder, the piston rod installing the lens into the lamp holder, the upper end of the lamp holder being a housing, and elastic buckles for fixing the lens on both sides of the housing; The expansion unit and the limiting rope are described. The expansion unit is fixedly connected to the piston rod, and an annular slider is slidably mounted on the piston rod. The expansion unit drives the annular slider to rise until it is level with the elastic buckle. After the slider is restricted by the limiting rope, it stops rising. The piston rod continues to drive the expansion unit to rise. When the expansion unit passes the slider, it pushes the buckle outward towards the lamp holder. When the piston rod extends to its upper limit position, the slider is released from the constraint of the expansion unit and slides downward along the piston rod under the action of gravity. The lens is located at the top of the lamp holder. The expansion unit releases its resistance to the buckle, and the buckle resets, locking the lens inside the lamp holder.

[0008] Furthermore, the expanding unit includes a housing, a through hole is provided in the center of the housing, the piston rod is located in the through hole, and the maximum outer diameter of the slider is less than or equal to the inner diameter of the through hole; The outer shell has a main sliding cavity along its long side. The main sliding cavity is symmetrically arranged on both sides of the through hole and communicates with the through hole. The main sliding cavity also has a secondary sliding cavity on both sides. The secondary sliding cavities are symmetrically arranged on both sides of the main sliding cavity. Each secondary sliding cavity corresponds to a buckle. The main sliding cavity is slidably connected to a drive rod and a first reset spring in the left and right directions, and the auxiliary sliding cavity is slidably connected to a telescopic rod in the front and back directions.

[0009] Furthermore, the outer end of the telescopic rod protrudes from the outer shell.

[0010] Furthermore, the inner end of the active rod has an end bevel that matches the slider, and the end face of the end bevel faces obliquely upward and is located inside the through hole; The active rod has wing-side inclined surfaces on both sides, and the inner end of the telescopic rod has a connecting inclined surface that matches the wing-side inclined surface. The wing-side inclined surface is in contact with the connecting inclined surface.

[0011] Furthermore, the spreading unit also includes a first reset spring and a second reset spring, wherein the first reset spring is located in the main sliding cavity and the second reset spring is located in the secondary sliding cavity; The telescopic rod has a circumferentially oriented abutment portion on its outer peripheral wall. One end of the first reset spring abuts against the bottom of the main sliding cavity, and the other end abuts against the outer end of the active rod; One end of the second reset spring abuts against the bottom of the secondary sliding cavity, and the other end abuts against the abutting part.

[0012] Furthermore, the diameter of the slider's cross-section gradually decreases from the center to the top and bottom ends, forming an upper inclined surface and a lower inclined surface; The top of the feeding cylinder is provided with a storage slot; One end of the limiting rope is fixedly connected to the lower inclined surface, and the other end is fixedly connected to the storage groove; The length of the limiting rope is the same as the distance from the storage slot to the buckle.

[0013] Furthermore, a support block for placing a lens is fixedly connected to the top of the housing, and the support block is fixedly connected to the top end of the piston rod.

[0014] Furthermore, the upper end of the housing has an inwardly extending rolled edge; The upper end of the inner end face of the buckle has a protrusion; The lens consists of a main body and a platform, with the platform located below the main body. The platform portion is confined between the rolled edge and the protrusion.

[0015] Furthermore, the positioning seat is symmetrically provided with a clamping cylinder, a pressure block and a hinge seat on both sides. The lamp holder is located between the two clamping cylinders. The hinge seat is located inside the clamping cylinder. One end of the pressure block is fixedly connected to the output end of the clamping cylinder, and the other end is located on the lamp holder. The hinge seat is hinged to the center of the pressure block. The hinge seat is located between the lamp holder and the pressure block.

[0016] The beneficial effects of the present invention are as follows: The present invention provides an automotive lens pressing mechanism, which is equipped with a telescopic rod. When the lens rises, the latch is supported by the telescopic rod and will unfold outward, so that the protrusion can avoid the platform. When the lens reaches the designated position, the latch is released, and the protrusion resets to lock the platform. During the lens rising process, it will not come into contact with other parts on the side. The whole installation process is very smooth. It avoids the problem that when the cylinder pushes the lens upward, the lens edge is easy to collide directly with the elastic latch set on the inner wall of the lamp holder, which can cause cracks, chipping, or even overall breakage of the lens edge due to local stress concentration. By setting a limit rope, the height of the slider can be controlled, so that the telescopic rod can be unfolded at the corresponding position to hold the buckle before unfolding. At the same time, when the outer shell passes the slider, the slider itself falls under the action of gravity, causing the buckle to disengage from the telescopic rod and reset, thus locking the platform. This allows the unfolding height of the telescopic rod to be precisely controlled to accommodate the installation of lenses for different specifications of lamp holders.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the feeding cylinder of the present invention; Figure 3 This is a schematic diagram of the lens of the present invention; Figure 4 This is a schematic front cross-sectional view of the support unit of the present invention; Figure 5 This is a top cross-sectional view of the support unit of the present invention; Figure 6 This is a top cross-sectional view of the outer casing of the present invention; Figure 7 This is a schematic diagram of the lamp holder of the present invention; Figure 8 For the present invention Figure 7 Enlarged diagram of area A in the middle; Figure 9 This is a schematic diagram of the slider rising in the present invention; Figure 10 This is a side view of the slider in the raised state of the present invention; Figure 11 This is a schematic diagram of the card block being opened according to the present invention; Figure 12 This is a schematic diagram of the extension of the telescopic rod of the present invention; Figure 13 This is a schematic diagram of the slider descending according to the present invention; Figure 14 This is a schematic diagram of the lens mounting according to the present invention; Figure 15 This is a schematic diagram of the piston rod descending according to the present invention; Figure 16 This is a schematic diagram of the lower limit position of the piston rod of the present invention; The following are the labeling elements in the figure: 1. Mounting platform; 2. Positioning seat; 3. Clamping cylinder; 4. Pressing block; 5. Hinge seat; 6. Feeding cylinder; 61. Piston rod; 62. Storage slot; 7. Lamp holder; 71. Housing; 711. Buckle; 7111. Protrusion; 712. Rolled edge; 8. Lens; 81. Main body; 82. Platform; 9. Spreading unit; 91. Outer shell; 911. Secondary sliding cavity; 912. Main sliding cavity; 913. Through hole; 92. Driving rod; 921. End bevel; 922. Wing side bevel; 93. First return spring; 94. Telescopic rod; 941. Supporting part; 942. Connecting bevel; 95. Second return spring; 96. Bearing block; 10. Limiting rope; 11. Slider; 111. Upper bevel; 112. Lower bevel. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] like Figure 1-8 As shown, the present invention provides a technical solution: an automotive lens pressing mechanism, including a mounting platform 1 for mounting a lens 8, a positioning seat 2 for mounting a lamp holder 7 fixedly connected to the top of the mounting platform 1, a feeding cylinder 6 installed in the positioning seat 2, a piston rod 61 slidably connected to the output end of the feeding cylinder 6, the piston rod 61 installing the lens 8 into the lamp holder 7, the upper end of the lamp holder 7 being a housing 71, and elastic buckles 711 for fixing the lens 8 on both sides of the housing 71; The expansion unit 9 and the limiting rope 10 are fixedly connected to the piston rod 61. An annular slider 11 is slidably installed on the piston rod 61. The expansion unit 9 drives the annular slider 11 to rise until it is level with the elastic buckle 711. After the slider 11 is restricted by the limiting rope 10, it stops rising. The piston rod 61 continues to drive the expansion unit 9 to rise. When the expansion unit 9 passes the slider 11, the expansion unit 9 pushes the buckle 711 to the outside of the lamp holder 7. When the piston rod 61 extends to the upper limit position, the slider 11 is released from the restraint of the expansion unit 9 and slides down the piston rod 61 under the action of gravity. The lens 8 is located at the top of the lamp holder 7. The expansion unit 9 releases the restraint of the buckle 711, and the buckle 711 resets to lock the lens 8 in the lamp holder 7.

[0022] The expansion unit 9 includes a housing 91, with a through hole 913 at the center of the housing 91. The piston rod 61 is located inside the through hole 913, and the maximum outer diameter of the slider 11 is less than or equal to the inner diameter of the through hole 913. The outer shell 91 has a main sliding cavity 912 along its long side. The main sliding cavity 912 is symmetrically arranged on both sides of the through hole 913 and communicates with the through hole 913. The main sliding cavity 912 also has a secondary sliding cavity 911 on both sides. The secondary sliding cavities 911 are symmetrically arranged on both sides of the main sliding cavity 912. Each secondary sliding cavity 911 corresponds to a buckle 711. The main sliding cavity 912 is slidably connected to the left and right by the active rod 92 and the first return spring 93, and the auxiliary sliding cavity 911 is slidably connected to the front and back by the telescopic rod 94.

[0023] The outer end of the telescopic rod 94 protrudes from the outer casing 91.

[0024] The inner end of the active rod 92 has an end slope 921 that matches the slider 11. The end face of the end slope 921 faces obliquely upward and is located inside the through hole 913. The active rod 92 has wing-side inclined surfaces 922 on both sides, and the inner end of the telescopic rod 94 has a connecting inclined surface 942 that matches the wing-side inclined surface 922. The wing-side inclined surface 922 is in contact with the connecting inclined surface 942.

[0025] The expansion unit 9 also includes a first reset spring 93 and a second reset spring 95. The first reset spring 93 is located in the main sliding cavity 912, and the second reset spring 95 is located in the secondary sliding cavity 911. A supporting part 941 is provided on the outer peripheral wall of the telescopic rod 94 along the circumferential direction. One end of the first return spring 93 abuts against the bottom of the main sliding cavity 912, and the other end abuts against the outer end of the active rod 92; One end of the second return spring 95 abuts against the bottom of the auxiliary sliding cavity 911, and the other end abuts against the abutting part 941.

[0026] The diameter of the cross-section of slider 11 gradually decreases from the center to the top and bottom ends, forming an upper inclined surface 111 and a lower inclined surface 112; The top of the feeding cylinder 6 is provided with a storage slot 62; One end of the limiting rope 10 is fixedly connected to the lower inclined surface 112, and the other end is fixedly connected to the storage groove 62; The length of the limiting rope 10 is the same as the distance from the storage slot 62 to the buckle 711.

[0027] The top of the housing 91 is fixedly connected to a support block 96 for placing the lens 8, and the support block 96 is fixedly connected to the top of the piston rod 61.

[0028] The upper end of the housing 71 has an inwardly extending rolled edge 712; The upper end of the inner end face of the buckle 711 has a protrusion 7111; The lens 8 is composed of a main body 81 and a platform 82, with the platform 82 located below the main body 81. The platform portion 82 is confined between the rolled edge 712 and the protrusion 7111.

[0029] The positioning base 2 is symmetrically provided with a clamping cylinder 3, a pressure block 4 and a hinge seat 5 on both sides. The lamp holder 7 is located between the two clamping cylinders 3. The hinge seat 5 is located inside the clamping cylinder 3. One end of the pressure block 4 is fixedly connected to the output end of the clamping cylinder 3, and the other end is located on the lamp holder 7. The hinge seat 5 is hinged to the center of the pressure block 4. The hinge seat 5 is located between the lamp holder 7 and the pressure block 4.

[0030] In one embodiment, how does the agency operate?

[0031] Specifically, the lens 8 is fitted onto the support block 96 and the lamp holder 7 is installed on the positioning seat 2. At this time, the lens 8 is located inside the lamp holder 7. The clamping cylinder 3 is activated. After the output end of the clamping cylinder 3 rises, the center of the pressure block 4 rotates around the hinge seat 5, so that the end of the pressure block 4 away from the clamping cylinder 3 falls down and presses on the lamp holder 7, so that the lamp holder 7 is fixed on the positioning seat 2. At this time, start the feeding cylinder 6, such as Figure 9 , 10 As shown, the piston rod 61 rises, and the outer casing 91 drives the slider 11 to move upward. When the outer casing 91 is about to be flush with the root of the buckle 711, the limiting rope 10 tends to be taut, and the outer casing 91 continues to move upward. like Figure 11 , 12 As shown in Figure 13, after the limiting rope 10 limits the height of the slider 11, the slider 11 no longer rises. The end inclined surface 921 slides on the lower inclined surface 112, causing the active rod 92 to slide outward. At this time, the wing side inclined surface 922 slides on the connecting inclined surface 942, causing the telescopic rod 94 to slide outward. At this time, the buckle 711 is pushed outward by the telescopic rod 94, so that the protrusion 7111 is outside the outer shell 91. The first return spring 93 is compressed and generates elastic force after being resisted by the active rod 92, and the second return spring 95 is compressed and generates elastic force after being resisted by the resisting part 941. like Figure 14 As shown, after the piston rod 61 rises to the upper limit position, the upper surface of the platform part 82 of the lens 8 fits against the inner wall of the rolled edge 712, and the active rod 92 crosses the lower inclined surface 112, causing the slider 11 to break free from the restriction of the active rod 92. Under the influence of gravity, the slider 11 slides down along the piston rod 61, and the limiting rope 10 falls into the storage groove 62. At this time, the elastic force of the first return spring 93 and the second return spring 95 is released, the telescopic rod 94 retracts inward, and the active rod 92 also retracts inward, so that the telescopic rod 94 does not resist the buckle 711, the buckle 711 returns to its original position, and the protrusion 7111 is now located on the lower surface of the platform part 82, and the installation of the lens 8 is now completed. like Figure 15 , 16As shown, after the piston rod 61 descends, the lower surface of the active rod 92 contacts the upper inclined surface 111 of the slider 11, and the active rod 92 slides outward. After passing the upper inclined surface 111, the active rod 92 is elastically released by the first return spring 93 and slides inward, so that the end inclined surface 921 abuts against the lower inclined surface 112. At this time, the piston rod 61 is also at the lower limit position, which lowers the output end of the pressing cylinder 3, so that the pressure block 4 releases the restriction on the lamp holder 7, and the lamp holder 7 can be removed. Then, in the same way as above, the lens 8 is installed on the bearing block 96 for the next workpiece to be installed.

[0032] In summary, this mechanism, by incorporating a telescopic rod 94, allows the latch 711 to extend outwards when the lens 8 rises, supported by the telescopic rod 94. This enables the protrusion 7111 to avoid the platform 82. When the lens 8 reaches the designated position, the latch 711 releases its restriction, allowing the protrusion 7111 to reset and lock the platform 82. During the lens 8's ascent, it will not come into contact with other components on the side, resulting in a smooth installation process. This avoids the problem of the lens 8's edge easily colliding directly with the elastic latch 711 on the inner wall of the lamp holder 7 when the cylinder pushes the lens 8 upward, which could lead to cracks, chipping, or even complete breakage of the lens 8 due to localized stress concentration. By setting a limit rope 10, the height of the slider 11 can be controlled, so that the telescopic rod 94 can be unfolded at the corresponding position to hold the buckle 711 before unfolding. At the same time, when the outer shell 91 passes the slider 11, the slider 11 falls due to gravity, causing the buckle 711 to disengage from the telescopic rod 94 and reset, thus locking the platform part 82. This allows the unfolding height of the telescopic rod 94 to be precisely controlled to accommodate different specifications of lamp holders 7 for lens 8 installation.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A mechanism for pressing and mounting automotive lenses, characterized in that: The application relates to a lens installation device, which comprises a mounting table (1) for mounting a lens (8), a positioning seat (2) for mounting a lamp holder (7) is fixedly connected to the top of the mounting table (1), a feeding air cylinder (6) is mounted in the positioning seat (2), the output end of the feeding air cylinder (6) is provided with a piston rod (61) which is slidably connected to the feeding air cylinder (6), the piston rod (61) is used for mounting the lens (8) into the lamp holder (7), the upper end of the lamp holder (7) is a shell (71), and the two sides of the shell (71) are provided with elastic buckles (711) which are used for fixing the lens (8). The lens installation device further comprises a stretching unit (9) and a limiting rope (10), the stretching unit (9) is fixedly connected to the piston rod (61), the piston rod (61) is slidably provided with a ring-shaped sliding block (11), when the stretching unit (9) drives the ring-shaped sliding block (11) to ascend to the level of the elastic buckle (711), the sliding block (11) is limited by the limiting rope (10) and cannot continue to ascend, the piston rod (61) continues to drive the stretching unit (9) to ascend, when the stretching unit (9) passes through the sliding block (11), the stretching unit (9) pushes the buckle (711) outward of the lamp holder (7), when the piston rod (61) extends to the upper limit position, the sliding block (11) is released from the restraint of the stretching unit (9) and slides downward along the piston rod (61) under the action of gravity, the lens (8) is located at the top end in the lamp holder (7), the stretching unit (9) releases the resistance to the buckle (711), and the buckle (711) resets to clamp the lens (8) in the lamp holder (7).

2. The press-fitting mechanism for an automobile lens according to claim 1, wherein: The stretching unit (9) comprises a shell (91), a through hole (913) is formed in the center of the shell (91), the piston rod (61) is located in the through hole (913), and the maximum outer diameter of the sliding block (11) is less than or equal to the inner diameter of the through hole (913). The shell (91) is provided with a main sliding cavity (912) along the long edge direction, the main sliding cavities (912) are symmetrically arranged on the two sides of the through hole (913) and are communicated with the through hole (913), and the two sides of the main sliding cavity (912) are further provided with a secondary sliding cavity (911), the secondary sliding cavities (911) are symmetrically arranged on the two sides of the main sliding cavity (912), and each secondary sliding cavity (911) corresponds to one buckle (711). The main sliding cavity (912) is slidably connected with a driving rod (92) and a first reset spring (93) on the left and right sides, and the secondary sliding cavity (911) is slidably connected with a telescopic rod (94) on the front and back sides.

3. The automotive lens press-fit mechanism of claim 2, wherein: The outer end of the telescopic rod (94) protrudes from the shell (91).

4. The automotive lens press-fit mechanism of claim 2, wherein: The inner end of the driving rod (92) is provided with an end inclined surface (921) matched with the sliding block (11), the end surface of the end inclined surface (921) faces obliquely upward and is located in the through hole (913); The two sides of the driving rod (92) are provided with wing side inclined surfaces (922), the inner end of the telescopic rod (94) is provided with a connecting inclined surface (942) matched with the wing side inclined surfaces (922), and the wing side inclined surfaces (922) are in contact with the connecting inclined surface (942).

5. The automotive lens press-fit mechanism of claim 4, wherein: The spreading unit (9) further includes a first reset spring (93) and a second reset spring (95), wherein the first reset spring (93) is located in the main sliding cavity (912) and the second reset spring (95) is located in the secondary sliding cavity (911); The telescopic rod (94) has a supporting part (941) on its outer peripheral wall along the circumferential direction. One end of the first reset spring (93) abuts against the bottom of the main sliding cavity (912), and the other end abuts against the outer end of the active rod (92); One end of the second return spring (95) abuts against the bottom of the secondary sliding cavity (911), and the other end abuts against the abutting part (941).

6. The automotive lens press-fit mechanism of claim 1, wherein: The diameter of the cross-section of the slider (11) gradually decreases from the center to the upper and lower ends, forming an upper inclined surface (111) and a lower inclined surface (112). The top of the feeding cylinder (6) is provided with a storage groove (62); One end of the limiting rope (10) is fixedly connected to the lower inclined surface (112), and the other end is fixedly connected to the storage groove (62); The length of the limiting rope (10) is the same as the distance from the storage slot (62) to the buckle (711).

7. The automotive lens press-fit mechanism of claim 2, wherein: The top of the housing (91) is fixedly connected to a support block (96) for placing the lens (8), and the top of the support block (96) is fixedly connected to the piston rod (61).

8. The automotive lens press-fit mechanism of claim 1, wherein: The upper end of the housing (71) has an inwardly extending rolled edge (712). The upper end of the inner end face of the buckle (711) has a protrusion (7111). The lens (8) consists of a main body (81) and a platform (82), with the platform (82) located below the main body (81). The platform portion (82) is restricted between the rolled edge (712) and the protrusion (7111).

9. The automotive lens press mechanism of claim 1, wherein: The positioning seat (2) is symmetrically provided with a clamping cylinder (3), a pressure block (4) and a hinge seat (5) on both sides. The lamp holder (7) is located between the two clamping cylinders (3). The hinge seat (5) is located inside the clamping cylinder (3). One end of the pressure block (4) is fixedly connected to the output end of the clamping cylinder (3), and the other end is located on the lamp holder (7). The hinge seat (5) is hinged to the center of the pressure block (4). The hinge seat (5) is located between the lamp holder (7) and the pressure block (4).

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