CN211530315U - Combination structure - Google Patents

Abstract

The utility model provides a improve the new technology of connector connection reliability each other. The coupling structure (40) is provided with: a heat sink; a circuit board (33) which is placed on the heat sink and has a power supply path for supplying power to the light source; a first connector (42) fixed to the circuit board (33); and a guide section (46) which guides the second connector (44) toward the first connector (42) when the second connector (44) on the wire side is connected to the first connector (42). The guide portion (46) is configured such that a part of the second connector (44) enters between the guide portion (46) and the first connector (42).

Description

Combination structure

Technical Field

The present invention relates to a coupling structure of connectors to each other, and for example, to a coupling structure of connectors to each other for supplying power to a light source.

Background

Conventionally, there has been proposed a lamp unit mounted on a vehicle or the like, the lamp unit having a substrate on which a light source is mounted and a connector to which a power supply cable for supplying power to the light source is connected (see patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 2017-37806

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

However, although the connector mounted on the board is connected to another connector to which the power supply cable is connected, if the connection is insufficient, the lighting state of the light source may be unstable or the connectors may be disconnected from each other.

The present invention has been made in view of such a situation, and an exemplary object thereof is to provide a new technique for improving the connection reliability between connectors.

Technical solution for solving technical problem

In order to solve the above technical problem, the utility model discloses the integrated configuration of a certain mode possesses: a heat sink; a circuit board which is placed on the heat sink and has a power supply path for supplying power to the light source; a first connector fixed to the circuit board; and a guide portion that guides the second connector toward the first connector when the second connector on the wire side is connected to the first connector. The guide portion is configured such that a part of the second connector enters between the guide portion and the first connector.

According to this aspect, when the second connector is connected to the first connector, the guide portion improves workability and reduces connection failure. In addition, since a part of the second connector enters between the guide portion and the first connector, the second connector is difficult to be detached from the first connector.

The guide portion may be formed with a guide groove that guides the second connector in a state in which a part of the second connector is bent when the second connector is connected to the first connector. Thus, by guiding a part of the second connector by the guide groove, for example, even if an operator does not bend the lock portion (lock portion), the part of the second connector can be bent, and therefore, the second connector can be easily connected to the first connector.

The guide portion may have an engagement portion, and a part of the second connector guided by the guide groove may be engaged with the engagement portion in a state where the second connector is fitted to the first connector. Thereby, the second connector can be prevented from being detached from the first connector.

The first connector may be arranged such that the connection portion faces upward with respect to the substrate surface of the circuit substrate, and the guide portion may be arranged at a position spaced apart from the connection portion. Accordingly, the operator can guide the second connector toward the first connector by the guide portion while checking the connection portion of the first connector, thereby improving workability in connecting the connectors.

The guide portion may be fixed to the heat sink. The fixation to the heat sink fixation guide may be direct or via other means. Alternatively, the guide portion may be integrated with the heat sink.

It should be noted that any combination of the above-described constituent elements and the conversion of the expression of the present invention between a method, an apparatus, a system, and the like are also effective as aspects of the present invention.

Effect of the utility model

According to the utility model discloses, can improve the connection reliability each other of connector.

Drawings

Fig. 1 is a schematic horizontal cross-sectional view of a vehicle headlamp according to the present embodiment;

fig. 2 is a front view of the vehicular headlamp of the present embodiment;

fig. 3 is a perspective view showing a schematic configuration of a coupling structure having a heat sink on which the first light source of the present embodiment is mounted;

FIG. 4 is a top view of the bonded structure shown in FIG. 3 from above the first light source;

fig. 5 (a) is a perspective view of the second connector of the present embodiment, and fig. 5 (b) is a front view of the second connector of the present embodiment;

fig. 6 is a plan view of the second connector of the present embodiment;

fig. 7 (a) and 7 (b) are schematic diagrams for explaining a case where the second connector of the present embodiment is connected to the first connector.

Description of the reference numerals

The vehicle headlamp 10, the optical unit 18, the first light source 20, the rotating reflector 22, the heat sink 32, the circuit board 33, the connection structure 40, the first connector 42, the engaging portion 42a, the second connector 44, the front end side 44a, the side surface 44c, the lock portion 44d, the guided portion 44e, the claw 44f, the ridge portion 44g, the guide portion 46, the side surface 46a, the groove 46b, the flat area 46c, the engaging portion 46d, the slit 48, and the connecting portion 50.

Detailed Description

The present invention will be described below with reference to the accompanying drawings based on embodiments. The same or equivalent constituent elements, members and processes shown in the respective drawings are denoted by the same reference numerals, and their description will not be repeated as appropriate. The present invention is not limited to the embodiments, but examples thereof, and all of the features and combinations thereof described in the embodiments are not necessarily essential to the present invention.

The optical unit having the coupling structure of the present embodiment can be used for various vehicle lamps. First, an outline of a vehicle headlamp on which an optical unit according to an embodiment described later can be mounted will be described.

(vehicle headlight)

Fig. 1 is a schematic horizontal cross-sectional view of a vehicle headlamp according to the present embodiment. Fig. 2 is a front view of the vehicle headlamp of the present embodiment. In fig. 2, some components are omitted.

The vehicle headlamp 10 of the present embodiment is a right headlamp mounted on the right side of the front end of the vehicle, and has the same configuration as a headlamp mounted on the left side, except that the right and left headlamps are symmetrical. Therefore, the right vehicle headlamp 10 will be described in detail below, and the left vehicle headlamp will not be described.

As shown in fig. 1, the vehicle headlamp 10 includes a lamp body 12, and the lamp body 12 has a recess that opens toward the front. The front surface opening of the lamp body 12 is covered with a transparent front cover 14 to form a lamp chamber 16. The lamp chamber 16 functions as a space for accommodating the optical unit 18. The optical unit 18 is a lamp unit configured to be able to irradiate variable high beam. The variable high beam is a high beam controlled so as to change the shape of the light distribution pattern for high beam, and can generate a non-irradiation region (light shielding portion) in a part of the light distribution pattern, for example.

The optical unit 18 of the present embodiment includes: a first light source 20; a condenser lens 24 serving as a primary optical system for changing the optical path of the first light L1 emitted from the first light source 20 and directing the changed optical path to the blade 22a of the rotating reflector 22; a rotating reflector 22 that rotates about a rotation axis R while reflecting the first light L1; a convex lens 26 as a projection lens for projecting the first light L1 reflected by the rotating reflector 22 in the light irradiation direction (rightward in fig. 1) of the optical unit; a second light source 28 disposed between the first light source 20 and the convex lens 26; a diffusion lens 30 serving as a primary optical system (optical member) that changes the optical path of the second light L2 emitted from the second light source 28 and directs the light toward the convex lens 26; and a heat sink 32 on which the first light source 20 and the second light source 28 are mounted.

Each light source uses a semiconductor light emitting element such as an LED, EL, or LD. In the first light source 20 of the present embodiment, a plurality of LEDs 20a are arranged in an array on the circuit board 33. Each LED20a is configured to be individually turned on and off.

In the second light source 28 of the present embodiment, two LEDs 28a are arranged in an array in the horizontal direction, and each LED28a is configured to be individually turned on and off. The second light source 28 is disposed such that the second light L2 enters the convex lens 26 without being reflected by the rotating reflector 22. Thus, the optical characteristics of the second light L2 emitted from the second light source 28 can be selected without regard to the reflection by the rotating reflector 22. Therefore, for example, the light emitted from the second light source 28 is diffused by the diffusion lens 30 and then enters the convex lens 26, so that a wider range can be irradiated, and therefore, the second light source 28 can be used as a light source for irradiating an area outside the vehicle.

The rotating reflector 22 is rotated in one direction about the rotation axis R by a drive source such as a motor 34. In the rotating reflector 22, two blades 22a having the same shape are provided around the cylindrical rotating portion 22 b. The blade 22a functions as a reflecting surface configured to scan the front with light obtained by reflecting light emitted from the first light source 20 while rotating, and to form a desired light distribution pattern.

The rotating reflector 22 has a rotation axis R inclined with respect to the optical axis Ax and is provided in a plane including the optical axis Ax and the first light source 20. In other words, the rotation axis R is provided substantially parallel to the scanning plane of the light (irradiation light beam) of the LED20a scanned in the left-right direction by the rotation. Thus, the optical unit is thinned. Here, the scanning plane may be regarded as a fan-shaped plane formed by continuously connecting the tracks of the scanning light, i.e., the light of the LED20a, for example.

The shape of the convex lens 26 may be appropriately selected according to the required light distribution characteristics such as the light distribution pattern and the illuminance distribution, but an aspherical lens or a free-form lens may be used. For example, the convex lens 26 of the present embodiment can be formed with the cutout portion 26a in which a part of the outer periphery is cut out in the vertical direction by devising the arrangement of the light sources and the rotating reflector 22. Therefore, the size of the optical unit 18 in the vehicle width direction can be suppressed.

Further, the presence of the notch 26a makes it difficult for the blade 22a of the rotating reflector 22 to interfere with the convex lens 26, and the convex lens 26 and the rotating reflector 22 can be brought close to each other. Further, when the vehicle headlamp 10 is viewed from the front, since a non-circular (straight) portion is formed on the outer periphery of the convex lens 26, the following novel design can be realized: the lens has an outer shape combining a curved line and a straight line when viewed from the front of the vehicle.

(bonding structure)

Next, the coupling structure of the present embodiment will be described. Fig. 3 is a perspective view showing a schematic configuration of a connection structure having a heat sink on which the first light source of the present embodiment is mounted. Fig. 4 is a plan view of the bonding structure shown in fig. 3 as viewed from above the first light source. Fig. 5 (a) is a perspective view of the second connector of the present embodiment, and fig. 5 (b) is a front view of the second connector of the present embodiment. Fig. 6 is a plan view of the second connector of the present embodiment. In fig. 3 and 4, the second connector is not shown.

The coupling structure 40 of the present embodiment includes: the light source device includes a heat sink 32, a circuit board 33 mounted on the heat sink 32 and having a power supply path for supplying power to the first light source 20, a first connector 42 fixed to the circuit board 33, and a guide portion 46 for guiding the second connector 44 to the first connector 42 when the second connector 44 on the side of an electric wire (コード, cord) connected to a control device or a power supply device is connected to the first connector 42.

The guide portion 46 of the present embodiment is fixed to the heat sink 32 and is configured integrally with the heat sink 32. The heat sink 32 is made of metal or alloy such as aluminum, copper, or iron having high heat dissipation. The heat sink 32 of the present embodiment has a fixing portion for fixing in the lamp chamber 16 of the vehicle headlamp 10, and is a complicated shape provided with a hole or a protrusion for mounting a plurality of components. Therefore, the heat spreader 32 is preferably a heat dissipating material suitable for casting, for example, a material based on aluminum to which copper, silicon, magnesium, or the like is added.

The first connector 42 is a plug-type connector, and is fixed along one side 33a of the outer edge of the rectangular circuit board 33 so as to be electrically connected to a wiring pattern formed on the circuit board 33.

The second connector 44 is a jack type connector, and a plurality of holes 44b into which the pins of the first connector 42 are inserted are formed in a row on a front end side 44a to be connected to the first connector. A latch (ラッチ, latch) portion (locking portion) 44d is formed on the side surface 44c of the second connector 44. The second connectors 44 are connected to each other by pressing the lock portions 44d into the first connectors 42 while flexing.

The guide portion 46 is provided at a position spaced apart from the upper side of the circuit board 33 so as to prevent interference with the circuit board 33. Both ends of the guide portion 46 extend to the vicinity of the heat radiation fins 32a of the heat sink 32 so as to bypass the circuit substrate 33.

Fig. 6 is an enlarged view of the vicinity of the guide portion of the coupling structure of the present embodiment. Fig. 7 (a) and 7 (b) are schematic diagrams for explaining a case where the second connector of the present embodiment is connected to the first connector.

As shown in fig. 3 and 6, two grooves 46b are formed on a side surface 46a of the guide portion 46 facing the first connector 42. On the other hand, the lock portion 44d of the second connector 44 has a guided portion 44e guided by the groove 46b of the guide portion 46. The guided portion 44e has a convex shape extending in the vertical direction from the distal end side 44a on the side surface 44 c. A flexible claw 44f is provided at an end of the lock portion 44d opposite to the distal end side 44 a.

When the second connector 44 is connected to the first connector 42, the second connector 44 and the first connector 42 are aligned so that the guided portion 44e of the second connector 44 is guided to the side surface 46a shown in fig. 3. This enables the second connector 44 to be substantially aligned with the first connector 42. Then, as shown in fig. 7 (a), the pawl 44f of the second connector 44 abuts against the flat region 46c between the two grooves 46b of the guide portion 46, and the lock portion 44d is entirely deflected.

Then, when the second connector 44 is further pressed toward the first connector 42, the claw 44f, which has been flexed, enters the slit 48 between the guide portion 46 and the first connector 42.

Further, a ridge portion 44g formed in parallel with the leading end side 44a is formed between the two guided portions 44 e. The raised ridge 44g has a first inclined surface 44h facing the distal end side 44a and a second inclined surface 44i facing the opposite side of the distal end side 44 a. The second inclined surface 44i has a larger inclination angle (angle with the side surface 44 c) than the first inclined surface 44 h.

The raised strip 44g passes over the engagement portion 42a, which is a raised portion, before and after the timing when the claw 44f enters the slit 48, and the raised strip 44g engages with the engagement portion 42 a. The inclination angle of the second inclined surface 44i (the angle with the side surface 44 c) is larger than that of the first inclined surface 44h in the present embodiment. Therefore, when the second connector 44 is connected to the first connector 42, the first inclined surface 44h easily passes over the engaging portion 42a, while the second inclined surface 44i hardly passes over the engaging portion 42a, so that the second connector 44 is hardly separated from the first connector 42.

In this way, the guide portion 46 of the present embodiment is configured such that the claw 44f of the second connector 44 enters the slit 48 between the guide portion 46 and the first connector 42. Thus, when the second connector 44 is connected to the first connector 42, the guided portion 44e of the lock portion 44d is guided by the guide portion 46, so that workability is improved and connection failure is reduced. Further, the second connector 44 is locked so that the second connector 44 is not disengaged from the first connector 42 by the claw 44f of the second connector 44 entering the slit 48.

Further, when the second connector 44 is connected to the first connector 42, a groove 46b for guiding the claw 44f in a bent state is formed. Thus, by guiding the claws 44f of the second connector 44 by the concave grooves 46b, the claws 44f can be flexed even if, for example, the operator does not flex the lock portions 44d, and therefore, the second connector 44 can be easily connected to the first connector 42.

The guide portion 46 has an engagement portion 46d, and the engagement portion 46d engages with the claw 44f guided by the groove 46b in a state where the second connector 44 is fitted to the first connector 42. The engaging portion 46d is a lower end surface of the flat region 46c of the guide portion 46. Thereby, the second connector 44 can be prevented from being detached from the first connector 42.

As shown in fig. 3 and 4, the first connector 42 is disposed such that the connection portion 50 faces upward with respect to the circuit board 33. The guide portion 46 is disposed at a position spaced apart from the upper side of the connection portion 50. This allows the operator to guide the second connector 44 to the first connector 42 by the guide portion 46 while checking the connection portion 50 of the first connector 42, thereby improving workability in connecting the connectors.

The present invention has been described above with reference to the above embodiments, but the present invention is not limited to the above embodiments, and the present invention is also included in the present invention with respect to the configuration in which the embodiments are appropriately combined or replaced. Further, modifications such as combinations of the embodiments, appropriate switching of the order of processing, or addition of various design changes to the embodiments may be made according to the knowledge of those skilled in the art, and embodiments incorporating such modifications are also included in the scope of the present invention.

In the above embodiment, the rotating reflector 22 having the vanes 22a is used, but a polyhedral reflector may be used instead of the rotating reflector 22. Alternatively, a MEMS mirror (resonance mirror) may be used instead of the rotating reflector 22. Alternatively, a DMD (digital micromirror Device) in which a plurality of movable micromirror devices (micromirrors) are arranged in a matrix may be used instead of the rotating reflector 22.

Claims (5)

1. A coupling structure is characterized by comprising:

a heat sink;

a circuit board mounted on the heat sink and having a power supply path for supplying power to the light source;

a first connector fixed to the circuit board;

a guide portion that guides a second connector on a wire side toward the first connector when the second connector is connected to the first connector;

the guide portion is configured such that a part of the second connector enters between the guide portion and the first connector.

2. The bonding structure of claim 1,

the guide portion is formed with a guide groove that guides the second connector in a state in which a part of the second connector is bent when the second connector is connected to the first connector.

3. The bonding structure of claim 2,

the guide portion has an engagement portion with which a part of the second connector guided by the guide groove engages in a state where the second connector is fitted in the first connector.

4. The bonding structure according to any one of claims 1 to 3,

the first connector is configured such that the connection portion faces upward with respect to the substrate of the circuit substrate,

the guide portion is disposed at a position spaced apart from the upper side of the connection portion.

5. The bonding structure according to any one of claims 1 to 3,

the guide portion is fixed to the heat sink.

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