CN112109335A - Vehicle lamp and cover for vehicle lamp - Google Patents
Vehicle lamp and cover for vehicle lamp Download PDFInfo
- Publication number
- CN112109335A CN112109335A CN202010553163.8A CN202010553163A CN112109335A CN 112109335 A CN112109335 A CN 112109335A CN 202010553163 A CN202010553163 A CN 202010553163A CN 112109335 A CN112109335 A CN 112109335A
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- Prior art keywords
- welding
- cover
- lamp housing
- continuous
- bent
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/87—Auxiliary operations or devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/29—Attachment thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/10—Protection of lighting devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention ensures high bonding strength of the cover with respect to the lamp housing. The present invention relates to a vehicle lamp and a vehicle lamp cover. The vehicle lamp is provided with a lamp housing (2) having an internal space (2a) and formed with a welding surface (6a), and a cover (3) covering the internal space, wherein the cover is welded and joined to the lamp housing by a hot plate, the cover is provided with an external surface portion (7) of which the outer surface (3a) faces the outside of the vehicle, and welding leg portions (8) protruding from the external surface portion and welded to the welding surface, and the welding leg portions are provided with a continuous portion (12) continuous to the external surface portion, and a bent portion (13) which is bent toward the outer peripheral side of the external surface portion relative to the continuous portion and of which the tip portion (8b) is welded to the welding surface.
Description
Technical Field
The present invention relates to a vehicle lamp in which a cover and a lamp housing are joined by heat plate welding, and a vehicle lamp cover.
Background
A vehicle lamp generally includes a lamp housing having an opening, and a cover joined to the lamp housing in a state where the opening is closed, and necessary members such as a lamp unit are disposed inside a lamp housing constituted by the lamp housing and the cover.
In such a vehicle lamp, as a method of joining the cover to the lamp housing, there is a method based on adhesion using a hot melt adhesive, but separation between the lamp housing and the hot melt adhesive is difficult, and in recent years, from the viewpoint of resource reuse, there are many cases where the cover is joined to the lamp housing by welding (for example, see patent document 1).
Among the methods by welding, there is a method by hot plate welding, which has advantages such as ensuring high welding strength, eliminating the need for consumables such as adhesives, having a wide selection range of target resins, and being suitable for joining a three-dimensional product, and is thus widely used as a method for joining a cover to a lamp housing.
When the cover and the lamp housing are joined by hot plate welding, a welding surface is formed on the lamp housing, and a welding leg portion protruding from a portion on the outer peripheral side of the design surface portion is provided on the cover, thereby performing welding. The exterior surface portion is a portion whose outer surface faces outward of the vehicle, and the welding leg portion is a portion joined to the welding surface by hot plate welding, and is joined to the welding surface by melting a leading end portion of the welding leg portion.
When the cover is joined to the lamp housing by the hot plate welding, the lamp housing and the cover are held by a first jig and a second jig, respectively, the welding leg and the joint surface are heated by the hot plate to be in a meltable state, and the second jig is moved in a direction approaching the first jig to press the cover against the lamp housing in a pressure-contact direction, whereby the tip end of the welding leg pressed against the welding surface is melted. Therefore, the crimping direction is the moving direction of the second clamp with respect to the first clamp.
Documents of the prior art
Patent document
Patent document 1 Japanese laid-open patent publication No. 2002-750232
Disclosure of Invention
Problems to be solved by the invention
However, as shown in patent document 1, since the exterior surface portion of the cover of the vehicle lamp is often curved in accordance with the shape of the vehicle body or the like, and the welding leg portion protrudes from the outer peripheral side portion of the exterior surface portion, the protruding direction of the welding leg portion from the exterior surface portion does not coincide with the pressure-bonding direction at the time of bonding by hot plate welding.
Therefore, the direction in which the welding leg portion is pressed against the welding surface of the lamp housing and the direction in which the welding leg portion is pressed against the welding surface of the lamp housing are different from each other, and the bonding strength of the cover to the lamp housing may be reduced.
Therefore, an object of the vehicle lamp and the cover of the vehicle lamp according to the present invention is to ensure high bonding strength of the cover to the lamp housing.
Means for solving the problems
A vehicle lamp according to a first aspect of the present invention includes a lamp housing having an internal space and formed with a welding surface, and a cover covering the internal space, the cover being welded to the lamp housing by a hot plate, the cover being provided with an exterior surface portion whose outer surface faces outward of a vehicle and a welding leg portion protruding from the exterior surface portion and welded to the welding surface, the welding leg portion being provided with a continuous portion continuous with the exterior surface portion and a bent portion bent toward an outer peripheral side of the exterior surface portion with respect to the continuous portion and having a tip end portion welded to the welding surface.
Thus, the bent portion is bent with respect to the continuous portion in a direction in which the welding leg portion is connected to the welding surface of the lamp housing and a pressing direction in the bonding by the hot plate welding are close to each other.
Second, in the vehicle lamp according to the present invention, it is preferable that the continuous portion is formed so as to protrude from the exterior surface portion in a protruding direction that is inclined at an angle greater than 30 degrees with respect to a pressing direction in which the cover is pressed against the lamp housing in the hot plate welding.
Accordingly, the size of the portion of the external appearance surface which transmits light on the inner peripheral side of the welding leg portion is increased, and thus the transmission area of light emitted from the light source in the cover is increased.
Third, in the vehicle lamp according to the present invention, it is preferable that a boundary portion between the continuous portion and the bent portion is formed as a bent end portion, a direction connecting the tip end portion and the bent end portion in the bent portion is a connecting direction, and the connecting direction is coincident with the pressure contact direction.
Thus, when the cover is joined to the lamp housing in the hot plate welding, the bent portion whose connecting direction coincides with the pressure-bonding direction abuts against the welding surface.
Fourth, in the vehicle lamp according to the present invention, it is preferable that an outer peripheral portion of the design surface portion is located outside the welding leg portion.
Thus, the outer peripheral portion of the external appearance surface portion functions as a shielding portion that shields the welding leg portion, and the joint portion of the welding leg portion to the welding surface is less likely to be visually recognized from the gap between the vehicle body and the cover.
A fifth aspect of the present invention provides a cover for a vehicle lamp, which is joined by hot plate welding to a lamp housing having an internal space and formed with a welding surface, the cover including an exterior surface portion having an outer surface facing outward of a vehicle, and a welding leg portion protruding from the exterior surface portion and welded to the welding surface, the welding leg portion including a continuous portion continuous with the exterior surface portion, and a bent portion bent toward an outer peripheral side of the exterior surface portion with respect to the continuous portion and having a tip end portion welded to the welding surface.
Thus, the bent portion is bent with respect to the continuous portion in a direction in which the welding leg portion is connected to the welding surface of the lamp housing and a pressing direction in the bonding by the hot plate welding are close to each other.
Effects of the invention
According to the present invention, since the bent portion is bent with respect to the continuous portion in a direction in which the connecting direction in which the welding leg portion is pressed against the welding surface of the lamp housing and the pressure-contact direction at the time of joining by hot plate welding are close to each other, high joining strength of the cover with respect to the lamp housing can be ensured.
Drawings
Fig. 1 is a sectional view showing a vehicle lamp and a cover for the vehicle lamp according to an embodiment of the present invention, together with fig. 2 to 8.
Fig. 2 is a view showing a part of the cover.
Fig. 3 is a cross-sectional view showing a state where the cover and the lamp housing are heated by the hot plate in hot plate fusion bonding.
Fig. 4 is a cross-sectional view showing a state where the cover and the lamp housing are joined in hot plate welding.
Fig. 5 shows a diagram of the process of the present invention.
Fig. 6 is a diagram showing an example in which the length in the connecting direction of the bent portion and the length in the protruding direction of the continuous portion from the exterior surface portion are formed to be substantially the same length.
Fig. 7 is a view showing an example in which the length of the curved portion in the connecting direction is formed longer than the length of the continuous portion in the protruding direction from the exterior surface portion.
Fig. 8 is a view showing an example in which the length of the continuous portion in the protruding direction protruding from the exterior surface portion is formed longer than the length of the curved portion in the connecting direction.
Description of the reference numerals
1: a vehicular lamp; 2: a lamp housing; 3: a cover; 3 a: an outer surface; 6 a: welding surfaces; 7: an appearance face; 8: welding the leg parts; 12: a continuous portion; 13: a curved portion.
Detailed Description
Hereinafter, a vehicle lamp and a vehicle lamp cover according to the present invention will be described with reference to the drawings.
< Structure of vehicular Lamp >
First, the structure of the vehicle lamp 1 will be described (see fig. 1 and 2).
The vehicle lamp 1 includes a lamp housing 2 and a cover 3, and the cover 3 is joined to the lamp housing 2 by hot plate welding. In the following description, for the sake of easy understanding, the front-back, up-down, left-right directions are indicated corresponding to positions where the lamp housing 2 and the cover 3 are held at the time of joining by hot plate welding. Therefore, the cover 3 is located on the upper side and the lamp housing 2 is located on the lower side, and for convenience, the direction in which the outer peripheral portion of the cover 3 is located in the cross-sectional shape shown in each drawing is referred to as the left-right direction.
However, the front-back, up-down, left-right directions shown below are for convenience of explanation, and the practice of the present invention is not limited to these directions.
In the drawings referred to, the vehicle lamp 1 is shown as a simple rotationally symmetrical shape, for example, in order to facilitate understanding of the present invention.
In the vehicle lamp 1, as described above, the cover 3 is joined to the lamp housing 2 by the hot plate welding, and in the hot plate welding, the cover 3 is joined to the lamp housing 2 by pressure-bonding. Therefore, the pressure bonding direction S is the vertical direction (see fig. 1).
The lamp housing 2 is formed of a resin material such as ABS resin (acrylonitrile copolymer resin), for example, and has an internal space 2 a. The lamp housing 2 includes a concave body portion 4 opening upward, an annular flange portion 5 extending outward from an upper end portion of the body portion 4, and an annular joining projection portion 6 projecting upward from the flange portion 5. The upper surface of the joining projection 6 is formed as a fusion-bonded surface 6 a.
The cover 3 is formed of a transparent resin material such as acrylic, and the outer surface 3a is formed by integrally forming an exterior surface portion 7 that faces the outside of the vehicle and welding leg portions 8 that protrude from an inner surface 7a of the exterior surface portion 7 toward the outer periphery. The cover 3 is engaged with the lamp housing 2 in a state of covering the internal space 2 a.
The exterior surface portion 7 is curved so as to protrude toward the opposite side of the lamp housing 2 in accordance with the shape of the vehicle body, and is formed into a curved surface shape. The portion of the external surface portion 7 outside the welding leg portion 8 is provided as a shielding portion 9 (see fig. 1 and 2). In the exterior surface portion 7, a portion from which the welding leg portion 8 protrudes, that is, a portion inside the shielding portion 9 is provided as a protrusion forming portion 10, and a portion inside the protrusion forming portion 10, that is, a portion excluding the shielding portion 9 and the protrusion forming portion 10 is provided as a light transmitting portion 11.
The welding leg portion 8 is constituted by a continuous portion 12 continuous to the exterior surface portion 7 and a bent portion 13 bent with respect to the continuous portion 12. In the welding leg 8, the tip end surface of the bent portion 13 is formed as a joint surface 8a, and the tip end portion of the bent portion 13 including the joint surface 8a is provided as a joint portion 8b (see fig. 2). In the welding leg portion 8, a boundary portion between the continuous portion 12 and the bent portion 13 is formed as a bent end portion 8 c.
The continuous portion 12 projects in a direction a in which the shield portion 9 and the projection forming portion 10 are continuous, for example, a direction substantially perpendicular thereto, and an inclination angle θ of a projecting direction P of the continuous portion 12 with respect to the pressure bonding direction S is larger than 30 degrees. The bending portion 13 is bent toward the outer peripheral side of the appearance surface portion 7, that is, toward the shielding portion 9 with respect to the continuous portion 12. In the bent portion 13, a direction connecting the joint portion 8b and the bent end portion 8c is defined as a connection direction Q.
The connection direction Q of the bent portion 13 coincides with the crimping direction S. However, the connection direction Q may be a fixed angle or less with respect to the pressure contact direction S, and may be 30 degrees or less with respect to the pressure contact direction S, for example.
< step of bonding operation >
The following briefly describes the procedure of the joining operation by hot plate welding of the cover 3 to the lamp housing 2 (see fig. 3 and 4).
When the cover 3 is joined to the lamp housing 2 by hot plate welding, the lamp housing 2 and the cover 3 are held by the first jig 50 and the second jig 60, respectively, and the cover 3 is located above the lamp housing 2 with a distance therebetween (see fig. 3).
Next, in a state where the lamp housing 2 and the cover 3 are held by the first jig 50 and the second jig 60, respectively, the heat plate 70 is moved between the lamp housing 2 and the cover 3, and the projection 6 for joining of the lamp housing 2 and the welding leg 8 of the cover 3 are heated by the heat plate 70. The upper end portion of the joining projection 6 including the welding surface 6a and the joining portion 8b of the welding leg portion 8 are formed in a meltable state by heating with the hot plate 70.
Next, the heat plate 70 is moved to retreat from between the lamp housing 2 and the cover 3, and the second jig 60 is lowered to press the cover 3 against the lamp housing 2 in the pressure-bonding direction S, so that the joint surface 8a of the welding leg 8 is brought into pressure-bonding contact with the welding surface 6a of the joining protrusion 6 from above (see fig. 4). At this time, since the upper end portion of the joining projection 6 including the welding surface 6a and the joining portion 8b of the welding leg 8 are formed in a meltable state, the upper end portion of the joining projection 6 and the joining portion 8b of the welding leg 8 are melted, and the cover 3 is joined to the lamp housing 2.
The lamp housing 2 and the cover 3 are taken out from the first jig 50 and the second jig 60, respectively, and the joining work of the cover 3 to the lamp housing 2 by the hot plate welding is completed.
By joining the cover 3 to the lamp housing 2, the lamp housing 2 and the cover 3 constitute a lamp housing 14 (see fig. 1). The lamp housing 14 is formed inside a lamp chamber 14a, and a lamp unit, not shown, having necessary members such as a light source and a reflector is disposed in the lamp chamber 14a, thereby configuring the vehicle lamp 1.
In the vehicle lamp 1, light emitted from the light source is reflected by the reflector, for example, and is transmitted through the light transmission portion 11 of the cover 3 to be emitted to the outside.
< Process for carrying out the invention >
The following describes the process of the present invention (see fig. 5).
In the cover, since the design surface portion 7 is formed in a shape curved in accordance with the shape of the vehicle body 100 as described above, when the welding leg portion 8A protruding in the direction substantially orthogonal to the design surface portion 7 is provided, the welding leg portion 8A is inclined with respect to the welding surface 6a of the joining protrusion 6 (see fig. 5 a). Therefore, the joining strength of the cover 3 to the lamp housing 2 may be reduced.
Therefore, by projecting the welding leg portion 8B in the direction that coincides with the pressure contact direction S with respect to the exterior surface portion 7, high joining strength of the cover 3 with respect to the lamp housing 2 can be ensured (see fig. 5B).
However, in a state where the cover 3 is joined to the lamp housing 2, there is a portion extruded by melting of the joining portion 8B and the joining projection 6, that is, so-called burr B, and when the welding leg portion 8B is projected in a direction corresponding to the pressure-bonding direction S, the front end portion of the welding leg portion 8B is positioned close to the vehicle body 100, so the burr B is easily visible from the gap between the vehicle body 100 and the cover 3.
Therefore, although high bonding strength of the cover 3 to the lamp housing 2 can be ensured, there is a possibility that the appearance is degraded.
Therefore, when the welding leg portion 8B is projected in the direction that coincides with the pressure-bonding direction S with respect to the exterior surface portion 7, by providing the wide shielding portion 9C that increases toward the outer peripheral side at the portion of the exterior surface portion 7 that is outside the welding leg portion 8B, the burr B is less likely to be visually recognized from the gap between the vehicle body 100 and the cover 3, and the appearance can be improved (see fig. 5 (C)).
However, when the wide masking portion 9C is provided, since there is a wide portion that greatly protrudes outward from the welding leg portion 8B in the exterior surface portion 7, there is a possibility that the appearance is degraded due to the presence of the wide masking portion 9C itself. Further, since the size of the entire design surface portion 7 is determined to be a constant size according to the size and shape of the vehicle body 100, when the large shielding portion 9C is provided, the welding leg portion 8B needs to be provided on the inner peripheral side accordingly, and the size of the light transmission portion 11 becomes small.
Therefore, although high bonding strength of the cover 3 to the lamp housing 2 can be ensured, the shielding portion 9C itself may cause a reduction in appearance and a reduction in an irradiation area.
Therefore, the vehicle lamp 1 and the cover 3 according to the present invention are provided with the welding leg portion 8 including the continuous portion 12 continuous with the exterior surface portion 7 and the bent portion 13 bent toward the outer peripheral side of the exterior surface portion 7 with respect to the continuous portion 12 (see fig. 5 (D)).
< summary >
In the vehicle lamp 1, by providing the continuous portion 12 and the bent portion 13 as described above, the bent portion 13 is bent with respect to the continuous portion 12 in a direction in which the direction of connection of the welding leg portion 8 when pressed against the welding surface 6a of the lamp housing 2 and the pressure contact direction S at the time of bonding by hot plate welding are close to each other, and therefore, high bonding strength of the cover 3 with respect to the lamp housing 2 can be ensured.
Further, since the entire welding leg portion 8 is not formed in a shape extending in the direction corresponding to the pressure-bonding direction S, it is difficult to visually recognize the burr B, which is an extruded portion caused by the melting, from the gap between the vehicle body 100 and the cover 3, and it is not necessary to provide the wide shielding portion 9C for making the burr B less visually recognizable, and thus it is possible to improve the appearance.
Further, since the wide shielding portion 9C is not required to be provided, the size of the light transmission portion 11 of the exterior surface portion 7 is not reduced, and the irradiation area of the light emitted from the light source can be set to a wide range.
The projecting direction P in which the continuous portion 12 projects from the exterior surface portion 7 is formed to have an inclination angle greater than 30 degrees with respect to the pressure contact direction S when the cover 3 is pressure-contacted to the lamp housing 2.
Therefore, since the size of the light transmission section 11, which is the portion of the exterior surface section 7 on the inner peripheral side of the welding leg section 8, is increased, the transmission area of the light emitted from the light source in the cover 3 is increased, and the irradiation area can be further increased to improve the luminance.
Further, since the connection direction Q of the bent portion 13 coincides with the pressure contact direction S, when the cover 3 is joined to the lamp housing 2 in the hot plate welding, the bent portion 13 having the connection direction Q coinciding with the pressure contact direction S abuts against the weld surface 6a, and therefore, higher joining strength of the cover 3 to the lamp housing 2 can be ensured.
Further, since the outer peripheral portion of the design surface portion 7 is located on the outer side of the welding leg portion 8, the outer peripheral portion of the design surface portion 7 functions as a shielding portion 9 that shields the welding leg portion 8, and the joint portion of the welding leg portion 8 and the welding surface 6a is less likely to be visually recognized through the gap between the vehicle body 100 and the cover 3, thereby improving the appearance.
Further, since the welding leg portion 8 is not easily pressed against the welding surface 6a of the lamp housing 2 in an inclined state, burrs B generated by welding are easily generated in a uniform size on the outer peripheral side and the inner peripheral side of the welding leg portion 8. Therefore, it is not necessary to form a groove or a wall for preventing excessive extrusion of the burr B in the joining projection 6, and the welding surface 6a can be formed in a flat shape, so that the shape of the lamp housing 2 is simplified, and the lamp housing 2 can be easily molded.
< dimensional relationship between continuous portion and curved portion >
Next, the dimensional relationship between the continuous portion 12 and the bent portion 13 will be described (see fig. 6 to 8).
The length of the curved portion 13 in the connection direction Q is X, the length of the continuous portion 12 in the protruding direction P from the exterior surface portion 7 is Y, and X and Y are substantially the same length as each other as a reference (see fig. 6). In the bent portion 13, there is a joint portion 8b that melts at the time of joining, and the length in the connection direction Q of the bent portion 13 after joining becomes shorter than that before joining. X is a length before joining, and is set to, for example, 2mm to 3mm in consideration of the presence of the melted joining portion 8 b. Y is, for example, about 3 mm.
When X and Y are the above dimensions, the arrangement recess 101 in the vehicle body 100, in which the outer periphery of the vehicle lamp 1 is arranged, is a shallow recess, and the design constraints of the vehicle body 100 are reduced. The arrangement recess 101 is formed by drawing using a metal material, for example.
Further, although the cover 3 is formed by injection molding using a mold, since the total length of X and Y is not excessively long, the sink mark generated in the projection forming portion 10 in the cooling step of injection molding becomes small, and high molding accuracy of the cover 3 can be ensured.
Further, the burr B is less likely to be visually recognized from the gap between the vehicle body 100 and the cover 3, and the appearance can be improved.
On the other hand, if the total length of X and Y is too short, there is a possibility that, during heating by the hot plate 70 in hot plate welding, the shielding portion 9 is deformed by heat when the shielding portion 9 is located close to the hot plate 70, or burrs B generated by melting of the joining portion 8B are attached to the shielding portion 9 when the joining portion 8B and the shielding portion 9 are located close to each other. However, since the total length of X and Y is not set too short, the above-described deformation of the shielding portion 9 due to heat and adhesion of the burr B to the shielding portion 9 can be prevented.
Next, a case will be described in which the length X in the connection direction Q of the bending portion 13 is extended without changing the length Y in the protruding direction P of the continuous portion 12 from the exterior surface portion 7 (see fig. 7).
When X and Y are the above dimensions, the arrangement recess 101 in the vehicle body 100, in which the outer periphery of the vehicle lamp 1 is arranged, is a deep recess, and there is a possibility that design constraints of the vehicle body 100 are generated.
The burr B is easily visible from the gap between the vehicle body 100 and the cover 3, and may interfere with the appearance.
Further, since the total length of X and Y is long, the sink mark generated in the projection forming portion 10 may be large. On the other hand, since the total length of X and Y is long, the shielding portion 9 is located at a position away from the hot plate 70 when heating is performed by the hot plate 70 in hot plate welding, so that deformation of the shielding portion 9 due to heat is less likely to occur, and the joint portion 8B and the shielding portion 9 are located at positions away from each other, so that adhesion of the burr B to the shielding portion 9 can be prevented.
Next, a case will be described in which the length Y of the continuous portion 12 in the protruding direction P from the exterior surface portion 7 is extended without changing the length X of the bent portion 13 in the connecting direction Q (see fig. 8).
When X and Y are the above dimensions, the arrangement recess 101 in the vehicle body 100, in which the outer periphery of the vehicle lamp 1 is arranged, is a deep recess, and there is a possibility that design constraints of the vehicle body 100 are generated.
On the other hand, the burr B is less likely to be visually recognized from the gap between the vehicle body 100 and the cover 3, and the appearance can be improved.
Further, since the total length of X and Y is long, sink marks generated in the projection forming portion 10 may become large. On the other hand, since the total length of X and Y is long, the shielding portion 9 is located at a position away from the hot plate 70 when heating is performed by the hot plate 70 in hot plate welding, so that deformation of the shielding portion 9 due to heat is less likely to occur, and the joint portion 8B and the shielding portion 9 are located at positions away from each other, so that adhesion of the burr B to the shielding portion 9 can be prevented.
< others >
In the above, the example in which the shielding portion 9 located on the outer peripheral side of the welding leg portion 8 is provided on the exterior surface portion 7 is shown, but the cover 3 may be configured such that the welding leg portion 8 protrudes from the outer peripheral portion of the exterior surface portion 7 and the shielding portion 9 does not exist. In this case, since the shielding portion 9 is not present, the appearance is improved without lowering the appearance due to the presence of the shielding portion 9 itself. Further, the size of the light transmission portion 11 can be increased in accordance with the projection of the welding leg portion 8 from the outer peripheral portion of the exterior surface portion 7, and the irradiation area of the light emitted from the light source can be set to a wider range.
Claims (5)
1. A vehicle lamp comprising a lamp housing having an internal space and a welding surface formed thereon, and a cover covering the internal space, the cover being welded to the lamp housing by a heat plate,
the cover is provided with an outer surface portion whose outer surface faces the outside of the vehicle, and welding leg portions which protrude from the outer surface portion and are welded to the welding surface,
the welding leg portion is provided with a continuous portion continuous to the exterior surface portion, and a bent portion bent toward an outer peripheral side of the exterior surface portion with respect to the continuous portion and having a tip end portion welded to the welding surface.
2. The vehicular lamp according to claim 1,
the continuous portion is formed so as to protrude from the exterior surface portion in a protruding direction having an inclination angle of more than 30 degrees with respect to a crimping direction in which the cover is crimped to the lamp housing in hot plate welding.
3. The vehicular lamp according to claim 2,
a boundary portion of the continuous portion and the bent portion is formed as a bent end portion,
setting a direction connecting the tip end portion and the bent end portion in the bent portion as a connecting direction,
the connecting direction coincides with the crimping direction.
4. The vehicular lamp according to any one of claims 1 to 3,
the outer peripheral portion of the design surface portion is located outside the welding leg portion.
5. A cover for a vehicle lamp, which is joined by heat-sealing to a lamp housing having an internal space and a welding surface formed thereon,
the cover of the vehicle lamp is provided with an appearance surface part with an outer surface facing the outside of the vehicle and welding leg parts which protrude from the appearance surface part and are welded on the welding surface,
the welding leg portion is provided with a continuous portion continuous to the exterior surface portion, and a bent portion bent toward an outer peripheral side of the exterior surface portion with respect to the continuous portion and having a tip end portion welded to the welding surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-115321 | 2019-06-21 | ||
| JP2019115321 | 2019-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112109335A true CN112109335A (en) | 2020-12-22 |
| CN112109335B CN112109335B (en) | 2022-05-31 |
Family
ID=73799100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010553163.8A Active CN112109335B (en) | 2019-06-21 | 2020-06-17 | Vehicle lamp and cover for vehicle lamp |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7430185B2 (en) |
| CN (1) | CN112109335B (en) |
| WO (1) | WO2020255827A1 (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115606A (en) * | 1994-10-17 | 1996-05-07 | Ichikoh Ind Ltd | Oscillation deposition structure for lens for lighting fixture |
| CN1178301A (en) * | 1996-07-08 | 1998-04-08 | 株式会社小糸制作所 | Vehicular lamp |
| JPH10334705A (en) * | 1997-05-30 | 1998-12-18 | Koito Mfg Co Ltd | Welded leg of vehicle lamp |
| JP2000016160A (en) * | 1998-06-26 | 2000-01-18 | Ichikoh Ind Ltd | Device for vehicle |
| JP2000182408A (en) * | 1998-12-15 | 2000-06-30 | Koito Mfg Co Ltd | Lighting fixture for vehicles |
| JP2001243811A (en) * | 2000-02-29 | 2001-09-07 | Koito Mfg Co Ltd | Lighting fixture for vehicle and manufacturing method of the same |
| JP2001297608A (en) * | 2000-04-13 | 2001-10-26 | Koito Mfg Co Ltd | Manufacturing apparatus for on-vehicle lamp |
| JP2002075023A (en) * | 2000-09-01 | 2002-03-15 | Ichikoh Ind Ltd | Lighting fixture for vehicle |
| JP2002075021A (en) * | 2000-09-01 | 2002-03-15 | Ichikoh Ind Ltd | Lighting fixture for vehicle |
| JP2003123506A (en) * | 2001-10-09 | 2003-04-25 | Ichikoh Ind Ltd | Vehicular lamp and its laser welding method |
| JP2003257217A (en) * | 2002-03-01 | 2003-09-12 | Ichikoh Ind Ltd | Lamp for vehicle |
| JP2004071333A (en) * | 2002-08-06 | 2004-03-04 | Koito Mfg Co Ltd | Assembling method of vehicle lighting fixture and lamp body, and front lens |
| CN1810491A (en) * | 2005-01-26 | 2006-08-02 | 株式会社小糸制作所 | Vehicle lighting device manufacturing method |
| CN203431660U (en) * | 2013-03-15 | 2014-02-12 | 光阳工业股份有限公司 | Lamp structure of vehicle |
| JP2014123547A (en) * | 2012-11-21 | 2014-07-03 | Koito Mfg Co Ltd | Lighting tool for vehicle |
| US20160025291A1 (en) * | 2013-04-02 | 2016-01-28 | Ichikoh Industries, Ltd. | Vehicle lamp |
| JP2016078248A (en) * | 2014-10-10 | 2016-05-16 | 株式会社小糸製作所 | Resin product manufacturing method and vehicle lighting appliance |
| CN109641397A (en) * | 2016-08-30 | 2019-04-16 | 黑拉有限责任两合公司 | Method and apparatus for engaging lampshade with the shell of lighting assembly for vehicles |
-
2020
- 2020-06-10 WO PCT/JP2020/022866 patent/WO2020255827A1/en active Application Filing
- 2020-06-10 JP JP2021528143A patent/JP7430185B2/en active Active
- 2020-06-17 CN CN202010553163.8A patent/CN112109335B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115606A (en) * | 1994-10-17 | 1996-05-07 | Ichikoh Ind Ltd | Oscillation deposition structure for lens for lighting fixture |
| CN1178301A (en) * | 1996-07-08 | 1998-04-08 | 株式会社小糸制作所 | Vehicular lamp |
| JPH10334705A (en) * | 1997-05-30 | 1998-12-18 | Koito Mfg Co Ltd | Welded leg of vehicle lamp |
| JP2000016160A (en) * | 1998-06-26 | 2000-01-18 | Ichikoh Ind Ltd | Device for vehicle |
| JP2000182408A (en) * | 1998-12-15 | 2000-06-30 | Koito Mfg Co Ltd | Lighting fixture for vehicles |
| US6250787B1 (en) * | 1998-12-15 | 2001-06-26 | Koito Manufacturing Co., Ltd. | Vehicle lamp fixture |
| JP2001243811A (en) * | 2000-02-29 | 2001-09-07 | Koito Mfg Co Ltd | Lighting fixture for vehicle and manufacturing method of the same |
| JP2001297608A (en) * | 2000-04-13 | 2001-10-26 | Koito Mfg Co Ltd | Manufacturing apparatus for on-vehicle lamp |
| JP2002075023A (en) * | 2000-09-01 | 2002-03-15 | Ichikoh Ind Ltd | Lighting fixture for vehicle |
| JP2002075021A (en) * | 2000-09-01 | 2002-03-15 | Ichikoh Ind Ltd | Lighting fixture for vehicle |
| JP2003123506A (en) * | 2001-10-09 | 2003-04-25 | Ichikoh Ind Ltd | Vehicular lamp and its laser welding method |
| JP2003257217A (en) * | 2002-03-01 | 2003-09-12 | Ichikoh Ind Ltd | Lamp for vehicle |
| JP2004071333A (en) * | 2002-08-06 | 2004-03-04 | Koito Mfg Co Ltd | Assembling method of vehicle lighting fixture and lamp body, and front lens |
| CN1810491A (en) * | 2005-01-26 | 2006-08-02 | 株式会社小糸制作所 | Vehicle lighting device manufacturing method |
| JP2014123547A (en) * | 2012-11-21 | 2014-07-03 | Koito Mfg Co Ltd | Lighting tool for vehicle |
| CN203431660U (en) * | 2013-03-15 | 2014-02-12 | 光阳工业股份有限公司 | Lamp structure of vehicle |
| US20160025291A1 (en) * | 2013-04-02 | 2016-01-28 | Ichikoh Industries, Ltd. | Vehicle lamp |
| JP2016078248A (en) * | 2014-10-10 | 2016-05-16 | 株式会社小糸製作所 | Resin product manufacturing method and vehicle lighting appliance |
| CN109641397A (en) * | 2016-08-30 | 2019-04-16 | 黑拉有限责任两合公司 | Method and apparatus for engaging lampshade with the shell of lighting assembly for vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7430185B2 (en) | 2024-02-09 |
| WO2020255827A1 (en) | 2020-12-24 |
| JPWO2020255827A1 (en) | 2020-12-24 |
| CN112109335B (en) | 2022-05-31 |
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