Hook structure and vehicle lamp using same

Abstract

To provide a hook structure that hardly comes out.SOLUTION: A first structure 10 has a circular cylindrical part 11, a pedestal 12 supporting the circular cylindrical part 11, and pedestal ribs 13a, 13b which connect a push surface 12a as an end part of the pedestal 12 to the circular cylindrical part 11 to let the circular cylindrical part 11 flex (strain it) backward. Projection ribs 11a, 11b are provided in an outer peripheral axial direction of the circular cylindrical part 11. A second structure has a reception part which has a circular groove having its front opened to insert the circular cylindrical part of the first structure, a receiving press part which restrains the first structure having been assembled from vibrating vertically, and a landing surface rib which is provided on a landing surface of the reception part. The receiving press part has a slide rib for letting the pedestal 12 slide.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a hook structure and a vehicle lamp using the same. [Background technology]

[0002] Generally, a vehicle lamp is assembled by assembling a housing, a bracket, a light emitting substrate, a reflector, an inner lens, an extension, an outer lens, etc., by a screw fixing method, a hook fixing method, a hot plate welding method, or the like.

[0003] For example, the lighting fixture described in Patent Document 1 has a light source housed in a box-shaped case with one side open, and a plate-shaped lid that closes the opening of the case. This lighting fixture has a fitting protrusion that protrudes from the side of the case and a hanging part that protrudes in a plate shape from the lid, and an opening provided at the tip of the hanging part is caught on the fitting protrusion, thereby connecting the case and the lid in the vertical direction.

[0004] As a comparative example, a hook structure that is also connected in the front-rear direction, for example, as shown in FIG. 8, is used in a vehicle lamp.

[0005] In Fig. 8A, the hook structure is composed of a first structure 100 provided, for example, on the extension side, and a second structure 200 provided, for example, on the housing side. The first structure 100 is plate-shaped, and its tip has an inclined surface 100a, a horizontal surface 100b, and a vertical surface 100c. On the other hand, the second structure 200 is formed by connecting the tip of the first structure 100 to the second structure 200. of It has a receiving portion 201 having a receiving groove 201a, and a receiving and pressing portion 202. Furthermore, the receiving portion 201 has a vertical surface 201b on the opposite side to the groove 201a, a horizontal surface 201c, and a vertical surface 201d on the groove 201a side.

[0006] The assembling operation of the hook structure of FIG. 8(A) will be described with reference to FIGS. 8(B) to 8(E).

[0007] First, when the extension approaches the housing side, as shown in FIG. 8B, the first structure 100 approaches the second structure 200. As a result, the inclined surface 100a of the first structure 100 becomes in contact with the vertical surface 100b of the second structure 200. 201b As a result, the first structure 100 is largely deflected in the vertical direction.

[0008] Furthermore, when the extension approaches the housing side, as shown in FIG. 8C, the contact of the lower end of the vertical surface 201b of the second structure 200 switches from the inclined surface 100a of the first structure 100 to the horizontal surface 100b of the first structure 100. In this case, the first structure 100 but It is held down by the receiving and holding portion 202.

[0009] Furthermore, when the extension approaches the housing side, as shown in FIG. 8(D), the horizontal surface 100b of the first structure 100 and the horizontal surface 201c of the second structure 200 come into contact and slide against each other, and the first structure 100 slides while bending.

[0010] Furthermore, when the extension approaches the housing side, as shown in (E) of Figure 8, the deflection of the first structure 100 is released, the vertical surface 100c of the first structure 100 comes into contact with the vertical surface 201d of the second structure 200, and the assembly operation of the first structure 100 and the second structure 200 is completed. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2017-195044 A Summary of the Invention [Problem to be solved by the invention]

[0012] However, in the hook structure of the comparative example described above, the tip of the first structure 100 is merely hooked into the groove 201a of the second structure 200, and there is a problem that the hook structure may come off due to, for example, vertical vibration. That is, as shown in FIG. 9, in the hook structure of the comparative example shown in FIG. 8, the first structure 100 is flexed and deformed during the assembly operation, and then the flexure is released, but the tip of the first structure 100 cannot fully enter the groove 201a of the second structure 200, and the hooking allowance K2 may be insufficient. Also, the vertical surface (100c, 201d ) is hooked on, and the tip of the first structure 100 is not pressed down, so there is a risk that it may come off due to up and down vibrations, etc. Also, since it is designed to be easily elastically deformed in order to bend, there is a risk that it may be unintentionally deformed due to vibrations, etc., and the hook structure may come off. [Means for solving the problem]

[0013] In order to solve the above-mentioned problems, the hook structure according to the present disclosure is configured by assembling a first structure to a second structure in a first direction, the first structure comprising a base provided in a plate shape along the first direction and a cylindrical portion provided on one surface of the base so as to protrude in a second direction perpendicular to the first direction, and the second structure comprising a receiving portion having an opening into which the cylindrical portion is inserted and a groove portion provided continuous with the opening in the first direction and into which the cylindrical portion is engaged. The first structure further includes a pressing surface protruding from the base so as to face the cylindrical portion in the first direction, and a base rib protruding from the base so as to connect the cylindrical portion and the pressing surface. It is something.

[0014] Further, a vehicle lamp according to the present disclosure includes the above-mentioned hook structure. Effect of the Invention

[0015] According to the present disclosure, during assembly, the side of the tubular portion of the first structure can be surrounded and held by the receiving portion of the second structure, thereby preventing the engagement between the first structure and the second structure from being released due to factors such as vibration. [Brief description of the drawings]

[0016] [Figure 1] 1 is a front view showing a vehicle lamp according to the present invention; [Diagram 2] FIG. 2 is an exploded perspective view of the vehicle lamp of FIG. 1. [Diagram 3] 1A shows an embodiment of the hook structure according to the present invention, and is a diagram for explaining a first structure constituting the hook structure, in which (A) is a front view of the extension, (B) is an enlarged bottom view of the first structure provided on the lower left outer side of the extension in (A), and (C) is an enlarged bottom oblique view of the first structure. [Figure 4] 1A shows an embodiment of a hook structure according to the present invention and is a diagram for explaining a second structure constituting the hook structure, in which (A) is a front view of a housing, (B) is an enlarged front view of the second structure provided on the lower left outer side of the housing of (A), (C) is a bottom view of the second structure of (B), and (D) is a bottom oblique view of the second structure of (B). [Diagram 5] 5A and 5B are diagrams for explaining the assembly operation of the first structure of FIG. 3 and the second structure of FIG. 4, in which (A) is a side view showing the state of the first and second structures before assembly, (B) is a side view showing the state of the first and second structures after assembly, (C) is a bottom view showing the state of the first and second structures after assembly, (D) is a cross-sectional view taken along line DD of (C), and (E) is a cross-sectional view taken along line EE of (C). [Figure 6] 5 is a perspective view illustrating a process of assembling the extension of FIG. 3 to the housing of FIG. 4, as viewed from below. [Figure 7] 4 is a bottom view showing a modification of the circular cylindrical portion of FIG. 3. FIG. [Figure 8] 1A and 1B are diagrams showing a hook structure as a comparative example used in a vehicle lamp. [Figure 9] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] FIG. 1 is a front view showing a vehicle lamp according to the present invention.

[0018] The vehicle lamp in FIG. 1 is a left front lamp, and is provided with low beam projector light sources LBP1 and LBP2, low beam reflector light sources LBR1 and LBR2, and high beam projector light source HBP. In the drawings of the present application, "up," "down," "left," "right," "front," and "rear" are directions seen from the driver of the vehicle. The up-down direction is the first direction, the front-rear direction is the second direction, and the left-right direction is the third direction. In this case, the first direction, the second direction, and the third direction are orthogonal to each other. In addition, the left front lamp has been used for the explanation, but this is just one example, and the present invention can also be applied to a right front lamp by targeting the left-right direction.

[0019] FIG. 2 is an exploded perspective view of the vehicle lamp of FIG.

[0020] As shown in Fig. 2, the vehicle lamp comprises a housing 1, a bracket / light source / reflector assy 2 provided on the housing 1, an extension 3 that protects the bracket / light source / reflector assy 2, and an outer lens 4 that defines a lamp chamber. The housing 1 has an accommodation space inside, and the bracket / light source / reflector assy 2 is attached so as to be accommodated in this accommodation space. The bracket / light source / reflector assy 2 has light emitting diode (LED) element boards and reflectors for low beam projector light sources LBP1, LBP2, low beam reflector light sources LBR1, LBR2, and high beam projector light source HBP. The extension 3 is formed in a C-shape in a front view seen from the front direction, and is attached to the housing 1 so as to cover the edges of the housing 1 and the bracket / light source / reflector assy 2.

[0021] The method for assembling the vehicle lamp in Fig. 2 is as follows: First, the bracket / light source / reflector assembly 2 is assembled to the housing 1 by screwing, then the extension 3 is assembled to the housing 1 by screwing and hooking, and finally the outer lens 4 is fitted to the housing 1 and hot plate welded.

[0022] In this embodiment, the extension 3 is fixed to the housing 1 at three points, one of which is easily visible on the outside at the bottom left and the other two are fixed with a hook, but this is not limited to this. However, the right end of the bottom left outer part connecting the extension 3 to the housing 1 is fixed with a hook because this is where a gap is created between the extension 3 and the housing 1, and this prevents the screw heads and the like from being visible from the outside through the gap.

[0023] Next, the hook structure of this embodiment will be described. In the hook structure, a first structure 10 provided on the extension 3 is inserted from the front side to the rear side into a second structure 20 provided on the housing 1 to engage with it.

[0024] FIG. 3 is a diagram for explaining the first structure 10 constituting the hook structure, in which (A) is a front view of the extension 3, (B) is an enlarged bottom view of the first structure 10 provided on the lower left outer side of the extension 3 in (A), and (C) is an enlarged bottom oblique view of the first structure 10.

[0025] As shown in FIG. 3A, the first structure 10 is provided on the left outer lower part of the extension 3.

[0026] The first structure 10 has a circular tubular portion 11, a base 12 that supports the circular tubular portion 11 and is provided on a pressing surface 12a on the extension 3 side, and base ribs 13a and 13b that connect the pressing surface 12a located at the end of the base 12 to the circular tubular portion 11 and improve the rigidity of the base 12 against bending in the vertical direction. The base 12 protrudes from the pressing surface 12a on the extension 3 side. The base ribs 13a and 13b may be one or three or more.

[0027] The circular cylindrical portion 11 has a space inside. There are Cylindrical shape It is , and is provided so as to protrude downward from the base 12. The base 12 is provided in a plate shape and is provided so as to extend along the front-rear direction. The circular tubular portion 11 and the pressing surface 12a are provided so as to protrude from the base 12 and to face each other in the front-rear direction. The base ribs 13a and 13b are provided protruding from the base 12 so as to connect the circular tubular portion 11 and the pressing surface 12a. The base ribs 13a and 13b transmit the longitudinal stress from the main body of the extension 3 as an assembly pressure to the circular tubular portion 11. By providing the base ribs 13a and 13b, the plate thickness of the base 12 may be reduced.

[0028] The circular tubular portion 11 has protruding ribs 11a and 11b provided in the outer periphery in the axial direction. The protruding ribs 11a, 11b are provided in a plurality and protrude radially from the side surface of the circular tubular portion 11. The protruding ribs 11a, 11b come into contact with a circular groove 21a of a receiving portion 21 of a second structure 20 of the housing 1, which will be described later, and can prevent the circular tubular portion 11 from moving unintentionally inside the circular groove 21a after assembly. The number of protruding ribs 11a, 11b may be any number that can prevent movement in the front-rear and left-right directions, and may be one or three or more.

[0029] The diameter of the circular tubular portion 11, including the protruding ribs 11a and 11b, becomes smaller as it gets farther away from the base 12. In other words, the protruding ribs 11a and 11b are provided so as to be inclined in the vertical direction. This allows the protruding ribs 11a and 11b to be caught in the circular groove 21a in the vertical direction, thereby preventing the circular tubular portion 11 from moving downward relative to the circular groove 21a.

[0030] Next, the second structure 20, which is the other of the hook structures of this embodiment, will be described.

[0031] FIG. 4 is a diagram for explaining the second structure 20, in which (A) is a front view of the housing 1, (B) is an enlarged front view of the second structure 20 provided on the lower left outer side of the housing 1 in (A), (C) is a bottom view of the second structure 20 in (B), and (D) is a bottom oblique view of the second structure 20 in (B).

[0032] 4(A), the second structure 20 is provided on the lower left outer side of the housing 1. The second structure 20 is provided at a position facing the first structure 10 in the front-rear direction.

[0033] The second structure 20 has a plate-shaped receiving portion 21 and a plate-shaped receiving and pressing portion 22 provided above the receiving portion 21 so as to face the receiving portion 21 .

[0034] The receiving portion 21 has an opening at the front side so that the circular tubular portion 11 can be inserted, and has a circular groove 21a that is continuous with the opening and holds the circular tubular portion 11 of the first structure 10. The opening is formed larger at the front side in the left-right direction than the circular groove 21a side, and has a guide portion 21b that is inclined so as to guide the circular tubular portion 11 when it is inserted. In addition, in the left-right direction, the size of the portion that communicates with the opening of the circular groove 21a is smaller than the left-right size of the circular tubular portion 11, and the radial size of the circular groove 21a is larger than the left-right size of the circular tubular portion 11 (at a portion not including the protruding ribs 11a and 11b). When the circular tubular portion 11 is inserted into the opening, the receiving portion 21 elastically expands the opening in the left-right direction, and the circular tubular portion 11 is accommodated in the circular groove 21a. Further, the receiving portion 21 has a landing surface rib 23 that is diagonally connected to the main body of the housing 1, and thus the receiving portion 21 is prevented from being deformed or damaged in the vertical direction.

[0035] The support portion 22 is for preventing downward vibration, which is intended to suppress upward movement of the first structure 10 after assembly. The support portion 22 has a sliding rib 22a protruding from the lower surface in the front-rear direction. The left-right size of the sliding rib 22a is formed to be smaller than the left-right size of the support portion 22.

[0036] After the first structure 10 is assembled into the second structure 20, the base 12 of the first structure 10 is clamped between the receiving portion 21 and the receiving and holding portion 22 of the second structure 20. The landing surface rib 23 prevents the receiving portion 21 from bending or deforming during assembly.

[0037] Furthermore, the sliding rib 22a of the receiving and pressing portion 22 is a portion against which the base 12 slides when the first structure 10 is inserted. The sliding rib 22a reduces resistance with the base 12 to facilitate assembly, and also presses the first structure 10 downward after assembly, thereby preventing unintended movement of the first structure 10 in the vertical direction.

[0038] Fig. 5 is a diagram for explaining the operation of assembling the first structure 10 of Fig. 3 with the second structure 20 of Fig. 4, where (A) is a side view showing the state of the first and second structures before assembly, (B) is a side view showing the state of the first and second structures after assembly, (C) is a bottom view showing the state of the first and second structures after assembly, (D) is a cross-sectional view taken along line DD in (C), and (E) is a cross-sectional view taken along line EE in (C). Note that in Fig. 5(A) and (B), only the receiving portion 21 and the receiving and holding portion 22 of the second structure 20 are shown in a simplified manner.

[0039] As shown in (A) and (B) of FIG. 5, when the first structure 10 is brought close to the second structure 20, the circular tubular portion 11 of the first structure 10 moves backward toward the circular groove 21a of the second structure 20. Deflection (stress) direction As we move on to HD, the top and bottom of the first structure 10 Deflection (stress) direction VD Deflection of is small. Deflection (stress) direction VD Deflection of Even if there is a gap, the upper and lower parts can be supported by the reinforcement in the insertion direction by the base rib 13a (13b) shown in FIG. 5(C). Deflection (stress) direction VD Deflection of This reduces the stress on the base 12, thereby preventing it from breaking or deforming. Therefore, the first structure 10 can be inserted into the second structure 20 without being deformed in the up-down direction, making assembly easy. In addition, the force that moves the base 12 in the rear direction can be accurately transmitted via the pressing surface 12a. Furthermore, the strength of the base 12 is increased by the base rib 13a, which makes it possible to prevent the first structure 10 from being unintentionally deformed or damaged in the vertical direction due to external factors such as vibration.

[0040] Even after assembly, the circular tubular portion 11 of the first structure 10 and the circular groove 21a of the receiving portion 21 of the second structure 20 are held in place such that the circular groove 21a covers the circular tubular portion 21a in the circumferential direction, so that they are unlikely to come off.

[0041] In addition, since the protruding ribs 11a and 11b are in contact with the entire inside of the circular groove 21a, the contact is prevented from being damaged by vibration, etc. front and back direction, Unintentional movement in the left / right and up / down directions can be suppressed.

[0042] Furthermore, as shown in Figures 5(C), (D), and (E), protruding ribs 11a, 11b are provided on the circular cylindrical portion 11, and a sliding rib 22a is provided on the receiving and retaining portion 22. This makes it possible to more closely match the first structure 10 and the second structure 20 after assembly, thereby further suppressing rattling and improving vibration performance.

[0043] FIG. 6 is a perspective view seen from below to explain the process of attaching the extension 3 of FIG. 3 to the housing 1 of FIG. 4, where FIG. 6(A) shows the state before assembly and FIG. 6(B) shows the state after assembly, in which the extension 3 is moved backward from the state of FIG. 6(A). An operation recess 3a is provided on the inner side (front side) of the pressing surface 12a of the extension 3. That is, the operation recess 3a is provided on the opposite side of the pressing surface 12a to the base 12. When the first structure 10 is inserted into the second structure 20, the operator's finger or device is inserted into this operation recess 3a, and the pressing surface 12a is pressed backward to be assembled. The operation recess 3a is formed in the lower frame of the extension 3 so as to be recessed from the bottom to the top, making it difficult to see in the appearance when the lamp is viewed from the front.

[0044] FIG. 7 is a bottom view showing a modification of the circular tubular portion 11 of FIG.

[0045] As shown in Fig. 7, a polygonal cylindrical portion (e.g., a diamond-shaped cylindrical portion) 11' is provided instead of the circular cylindrical portion 11 of Fig. 3. In this case, the edges of the polygonal cylindrical portion 11' function as the protruding ribs 11a and 11b of Fig. 3, so there is no need to provide the protruding ribs 11a and 11b of Fig. 3. This polygonal cylindrical portion 11' functions in almost the same way as the circular cylindrical portion 11, and strengthens the hook structure.

[0046] In addition, the stronger engagement of the hook structure of the extension 3 makes it difficult for the extension 3 to come off the housing 1 and also acts as a reinforcement for the housing 1. The strengthened hook structure allows the load on the housing 1 to be transmitted to the extension 3 without the hook structure coming off, and the extension 3 can absorb the load.

[0047] In the above embodiment, the first structure 10 is provided on the extension 3 side and the second structure 20 is provided on the housing 1 side, but the first structure 10 may be provided on the housing 1 side and the second structure 20 on the extension 3 side. Also, the hook structure according to the present invention may be provided not between the extension 3 and the housing 1 of the vehicle lamp but between other components.

[0048] In addition, the extension 3 is C-shaped when viewed from the front and is fixed to the housing by both a screw and a hook structure, but the extension 3 does not have to be C-shaped, and may be straight or L-shaped. Also, the assembly may be entirely by hook structure without using screws, or the number of hook structures may be increased to make it more difficult to come off.

[0049] Furthermore, the present invention can be applied to any modifications within the obvious scope of the above-described embodiments. [Industrial Applicability]

[0050] The hook structure according to the present invention can be used for connecting two resin parts other than vehicle lamps. [Explanation of symbols]

[0051] 1: Housing 2: Bracket / light source / reflector assembly 3: Extension 3a: Operation recess 4: Outer lens 10: First structure 11: Circular cylindrical section 11': Polygonal cylindrical section 11a, 11b: protruding ribs 12: Pedestal 12a: Push surface 13a, 13b: Base ribs 20: Second structure 21: Receiving part 21a: Circular groove 21b: Guide section 22: Receiving and holding part 22a: Sliding rib 23: Landing surface rib LBP1, LBP2: Low beam projector light source LBR1, LBR2: Low beam reflector light source HBP: High beam projector light source 100: First structure 100a: Inclined surface 100b: horizontal plane 100c: Vertical surface 200: Second structure 201: Receiving part 201a: Groove 201b: Vertical plane 201c: horizontal plane 201d: Vertical plane 202: Receiving and holding part

Claims

1. A hook structure constructed by assembling a first structure to a second structure along a first direction, The first structure is A base having a plate shape provided along the first direction; a cylindrical portion provided on one surface of the base so as to protrude in a second direction perpendicular to the first direction; Equipped with the second structure includes a receiving portion having an opening into which the tubular portion is inserted and a groove portion that is continuous with the opening in the first direction and into which the tubular portion is engaged; The first structure further comprises: a pressing surface protruding from the base so as to face the cylindrical portion in the first direction; a base rib protruding from the base so as to connect the cylindrical portion and the pressing surface; A hook structure comprising:

2. A hook structure configured by assembling a first structure to a second structure along a first direction, The first structure is A base having a plate shape provided along the first direction; a cylindrical portion provided on one surface of the base so as to protrude in a second direction perpendicular to the first direction; Equipped with the second structure includes a receiving portion having an opening into which the tubular portion is inserted and a groove portion that is continuous with the opening in the first direction and into which the tubular portion is engaged; The first structure is a hook structure further including a protruding rib provided along the outer periphery of the circular cylindrical portion in the axial direction.

3. A hook structure configured by assembling a first structure to a second structure along a first direction, The first structure is A base having a plate shape provided along the first direction; a cylindrical portion provided on one surface of the base so as to protrude in a second direction perpendicular to the first direction; Equipped with the second structure includes a receiving portion having an opening into which the tubular portion is inserted and a groove portion that is continuous with the opening in the first direction and into which the tubular portion is engaged; The second structure further comprises a landing surface rib on the receiving portion opposite the opening of the groove.

4. 4. The hook structure according to claim 1, 2 or 3, wherein the second structure has a receiving and pressing portion provided opposite the receiving portion for clamping the base of the first structure together with the receiving portion during assembly.

5. 5. The hook structure according to claim 4, wherein the receiving and pressing portion is provided with a sliding rib on the receiving portion side in a sliding direction of the base of the first structure.

6. 4. The hook structure of claim 1, 2 or 3, wherein said tubular portion comprises a circular tubular portion.

7. 4. The hook structure of claim 1, 2 or 3, wherein said tubular portion comprises a polygonal tubular portion.

8. The hook structure according to claim 1 , further comprising an operating recess provided on the pressing surface of the first structure opposite to the base.

9. A vehicle lamp comprising the hook structure according to any one of claims 1 to 8.

10. The vehicle lamp includes a housing and an extension. the extension has the first structure or the second structure, The vehicular lamp according to claim 9 , wherein the housing comprises the second structure or the first structure.

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