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EP-4742846-A1 - ELECTRONIC DEVICE

EP4742846A1EP 4742846 A1EP4742846 A1EP 4742846A1EP-4742846-A1

Abstract

There is provided a technique for bringing a heat sink and a plug shell into contact with each other without causing the heat sink and the plug shell to slide on each other with a simple configuration. In an electronic device 10, a heat sink 51 is supported to be movable in a first direction relative to a receptacle shell 61. A contact surface 25 of a plug shell 21 and a heat releasing surface of the heat sink 51 are formed as inclined surfaces. Pressing means 63 is disposed between the heat sink 51 and the receptacle shell 61. The receptacle shell 61 includes a guide portion (cam groove 62) configured to regulate movement of the heat sink 51 in a negative second direction when the heat sink 51 is at a position in a positive first direction relative to the receptacle shell 61, and to regulate movement of the heat sink 51 in a positive second direction when the heat sink 51 is at a position in a negative first direction relative to the receptacle shell 61. The heat sink 51 includes a guided portion (columnar protrusion 57) configured to be guided by the guide portion (cam groove 62) provided on the receptacle shell 61.

Inventors

  • HASHIGUCHI, OSAMU

Assignees

  • Japan Aviation Electronics Industry, Limited

Dates

Publication Date
20260513
Application Date
20250812

Claims (8)

  1. An electronic device (10), comprising: a plug connector (20) including a plug shell (21) and a plug housing (22); a receptacle housing (41) including an opening (42) into/from which the plug connector (20) is insertable/extractable; and a heat sink (51) movably installed on the receptacle housing (41) by being installed through a receptacle shell (61) attached to the receptacle housing (41), wherein when the plug connector (20) is inserted into the opening (42) of the receptacle housing (41) and a fitted state is established, a contact surface (25) of the plug shell (21) and a heat releasing surface of the heat sink (51) come into contact with each other, and the heat sink (51) dissipates heat generated from the plug connector (20), when an insertion/extraction direction of the plug connector (20) into/from the opening (42) of the receptacle housing (41) is defined as a first direction, the extraction direction of the plug connector (20) from the opening (42) is defined as a positive first direction, the insertion direction is defined as a negative first direction, a direction orthogonal to the first direction is defined as a second direction, a direction in which the heat releasing surface of the heat sink (51) is disposed relative to the plug shell (21) in the fitted state is defined as a positive second direction, and a direction in which the plug shell (21) is disposed relative to the heat releasing surface of the heat sink (51) is defined as a negative second direction, the heat sink (51) is supported to be movable in the first direction relative to the receptacle shell (61), the contact surface (25) of the plug shell (21) and the heat releasing surface of the heat sink (51) are formed as inclined surfaces having inclination to the first direction, pressing means (63) configured to press the heat sink (51) in the positive first direction relative to the receptacle shell (61) is disposed between the heat sink (51) and the receptacle shell (61), the receptacle shell (61) includes a guide portion (62) configured to regulate movement of the heat sink (51) in the negative second direction when the heat sink (51) is at a position in the positive first direction relative to the receptacle shell (61), and to regulate movement of the heat sink (51) in the positive second direction when the heat sink (51) is at a position in the negative first direction relative to the receptacle shell (61), and the heat sink (51) includes a guided portion (57) configured to be guided by the guide portion (62) provided on the receptacle shell (61).
  2. The electronic device (10) according to claim 1, wherein the guide portion (62) is formed as a cam groove having a groove shape, the guided portion (57) is formed as a columnar protrusion to be fitted into the groove shape of the cam groove, and an expression of α ≈ β is established, where α is a second-direction dimension between a negative-second-direction part of the cam groove on the positive first direction side and a positive-second-direction part of the cam groove on the negative first direction side, and β is a second-direction dimension that is a diameter dimension of the columnar protrusion.
  3. The electronic device (10) according to claim 2, wherein the guide portion (62) formed as the cam groove has a substantially L-shaped groove shape.
  4. The electronic device (10) according to any one of claims 1 to 3, wherein the plug housing (22) includes a locking portion (24) serving as fixing means, the receptacle housing (41) includes a locked portion (45) serving as fixed means, and when the plug connector (20) is inserted into the opening (42) of the receptacle housing (41) and the fitted state is established, the locking portion (24) and the locked portion (45) engage with each other to maintain the fitted state of the plug connector (20) to the receptacle housing (41) against pressing force by the pressing means (63).
  5. The electronic device (10) according to any one of claims 1 to 4, wherein the pressing means (63) is configured as a member integrated with the receptacle shell (61).
  6. The electronic device (10) according to any one of claims 1 to 4, wherein the pressing means (63) is configured as a member separated from the receptacle shell (61).
  7. The electronic device (10) according to any one of claims 1 to 6, wherein the pressing means (63) is formed as a cantilever spring having a cantilever shape or a double-end supported spring having a double-end supported beam shape.
  8. The electronic device (10) according to any one of claims 1 to 7, wherein a heat conductive sheet (56) is installed on the heat releasing surface of the heat sink (51).

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an electronic device. Description of the Related Art An electronic device in recent years is required to have higher heat dissipation efficiency because power consumption of mounted electronic parts is increased along with demands such as for increase in communication speed and improvement in processing performance. Therefore, it is desirable to provide an electronic device that can reasonably achieve a high heat dissipation effect only by contact between solids, like an optical transceiver including a heat sink or the like. A structure of the electronic device of such a type is disclosed in, for example, Japanese Patent Laid-Open No. 2009-152427. In an optical transceiver (10) as an existing electronic device disclosed in Japanese Patent Laid-Open No. 2009-152427, a contact surface (15a) of a heat sink (15) and a contact surface (14a) of a transceiver housing (14) are formed as inclined surfaces, and a soft heat conductive sheet (18) is stuck to one of the contact surface (15a) of the heat sink (15) and the contact surface (14a) of the transceiver housing (14), as illustrated in FIG. 31 and FIG. 32. The heat sink (15) is supported by a cage (12) so as to be movable within a predetermined range in a front-rear direction and an up-down direction along with insertion of the transceiver housing (14). The transceiver housing (14) is inserted without rubbing a contact surface of the heat conductive sheet (18), and the contact surface of the heat sink (15) and the contact surface of the transceiver housing (14) are brought into press-contact with each other with the heat conductive sheet (18) in between at a final insertion position of the transceiver housing (14). Note that reference numerals relating to description of the related art document are distinguished from an embodiment of the present invention by adding parentheses. In the optical transceiver (10) disclosed in Japanese Patent Laid-Open No. 2009-152427, since the heat sink (15) is supported by the cage (12) so as to be movable within the predetermined range in the front-rear direction and the up-down direction along with insertion of the transceiver housing (14), press-down springs (17a and 17b) are necessary. In addition, to prevent the heat conductive sheet (18) from being rubbed, components such as an engagement protrusion (19) and an engagement hole (20) are necessary, which complicates the configuration. Therefore, an object of the present invention is to provide an electronic device that has a simple configuration and can bring a heat sink (a heat conductive sheet in the case where the heat conductive sheet is attached) and a plug shell into contact with each other without causing the heat sink and the plug shell to slide on each other. SUMMARY OF THE INVENTION An electronic device according to an aspect of the present invention includes: a plug connector including a plug shell and a plug housing; a receptacle housing including an opening into/from which the plug connector is insertable/extractable; and a heat sink movably installed on the receptacle housing by being installed through a receptacle shell attached to the receptacle housing. When the plug connector is inserted into the opening of the receptacle housing and a fitted state is established, a contact surface of the plug shell and a heat releasing surface of the heat sink come into contact with each other, and the heat sink dissipates heat generated from the plug connector. When an insertion/extraction direction of the plug connector into/from the opening of the receptacle housing is defined as a first direction, the extraction direction of the plug connector from the opening is defined as a positive first direction, the insertion direction is defined as a negative first direction, a direction orthogonal to the first direction is defined as a second direction, a direction in which the heat releasing surface of the heat sink is disposed relative to the plug shell in the fitted state is defined as a positive second direction, and a direction in which the plug shell is disposed relative to the heat releasing surface of the heat sink is defined as a negative second direction, the heat sink is supported to be movable in the first direction relative to the receptacle shell, the contact surface of the plug shell and the heat releasing surface of the heat sink are formed as inclined surfaces having inclination to the first direction, pressing means configured to press the heat sink in the positive first direction relative to the receptacle shell is disposed between the heat sink and the receptacle shell, the receptacle shell includes a guide portion configured to regulate movement of the heat sink in the negative second direction when the heat sink is at a position in the positive first direction relative to the receptacle shell, and to regulate movement of the heat sink in the positive second direction when the