JP2005178583A - Operation panel supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve assembling workability of a coating design member to be engaged and mounted to the periphery of an operation panel in an operation panel assembling structure for supporting the operation panel displaceably with respect to a support frame body. <P>SOLUTION: In the operation panel assembling structure, the operation panel 16 having an operation member 16a is displaceably assembled to the support frame body 23, and the coating design member is engaged and mounted to the periphery of the operation panel 16. Flat spring members 22b and 22c are molded integrally with a support plate 22 on the operation panel 16 side, the operation panel 16 is supported displaceably with respect to the support frame body 23 by the flat spring members 22b and 22c, and the operation panel 16 is held at a reference position inside the support frame body 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structure for assembling an operation panel that generates an operation signal for an electric device, and is suitable as an operation panel for an in-vehicle electric device such as a vehicle air conditioner, a vehicle audio device, and a vehicle navigation device. It is.

  Conventionally, the operation panels of the various on-vehicle electric devices are arranged near the instrument panel (instrument panel) located in the front part of the vehicle interior of the vehicle and are manually operated by the passenger. At that time, in order to improve the appearance of the design surface of the instrument panel, the operation panel is configured as a movable operation panel that can be displaced with respect to the support frame on the instrument panel side.

  That is, a skin design member forming a part of the design surface of the instrument panel is fitted and mounted around the operation panel. At this time, the outer edge portion of the operation panel and the inner edge portion of the skin design member are fitted. In the joint part, the appearance of the instrument panel deteriorates unless the fitting gap is uniformly adjusted over the entire circumference. Therefore, conventionally, the operation panel is assembled so as to be displaceable with respect to the support frame on the instrument panel side, and the operation panel is made movable (floating island).

  However, in the conventional structure, the operation panel is simply supported by the support frame so as to be displaceable within a predetermined size range. Therefore, the assembly position of the operation panel with respect to the support frame is not constant.

  On the other hand, it is inevitable that the position of the skin design member will change to some extent from the assembly relationship with the peripheral members. As a result, when fitting the skin member around the operation panel, it is necessary to adjust the position of the movable operation panel and then perform the fitting operation of the skin design member. There is a problem that workability is low.

  In view of the above points, the present invention improves the assembly workability of the skin design member fitted and mounted around the operation panel in the operation panel assembly structure that supports the operation panel to be displaceable with respect to the support frame. The purpose is to do.

In order to achieve the above object, according to the first aspect of the present invention, an operation panel (16, 17) having an operation member (16a, 17a) for generating an operation signal of an electric device is attached to the support frame (23). In the operation panel assembly structure in which the skin design member (18) is fitted and mounted around the operation panel (16, 17) while being supported so as to be displaceable,
An elastic member (22b-22e) is interposed between the operation panel (16, 17) and the support frame (23),
The elastic members (22b to 22e) support the operation panel (16, 17) to be displaceable with respect to the support frame (23), and also support the operation panel (16, 17) to the support frame ( 23) It is characterized in that it is configured to exert an elastic force held at the inner reference position.

  According to this, since the operation panel (16, 17) can always be held at the reference position inside the support frame (23) by the elastic force of the elastic members (22b-22e), the operation panel (16, 17) is supported by the support frame. (23) There is no movement to the inner end position.

  As a result, the skin design member (18) can be moved from the reference position (initial position) to the actual position of the skin design member (18) by slightly changing the position of the operation panel (16, 17) from the reference position (initial position). 16, 17) can be fitted to the outside of the outer shape.

  Thus, the skin design member (18) is fitted to the outside of the outer shape of the operation panel (16, 17) without specially adjusting the position of the operation panel (16, 17). By simply changing the position of the operation panels (16, 17), the fitting operation of the skin design member (18) can be performed very easily.

  Moreover, even if the position of the skin design member (18) changes, the position of the operation panel (16, 17) can be made to follow the position of the skin design member (18) by the elastic force of the elastic members (22b to 22e). it can. Therefore, the appearance of the fitting portion between the skin design member (18) and the operation panel (16, 17) can always be maintained in a good state.

According to a second aspect of the present invention, in the operation panel assembly structure according to the first aspect, the operation panel (16, 17) has a shape having an elongated shape, and the operation member ( 16a, 17a) are arranged in large numbers,
Of the elongated outer shape, a plurality of elastic members (22b to 22e) are respectively disposed between two opposing long sides and the inner edge of the support frame (23). To do.

  According to this, since the elastic members (22b to 22e) are arranged at a plurality of locations on each of the two long sides of the elongated shape of the operation panel (16, 17), the operation panel (16, 17) is elongated. Even if it exists, the position adjustment of this elongate operation panel (16, 17) can be performed stably, and the effect of Claim 1 can be exhibited favorably.

According to a third aspect of the present invention, in the operation panel assembly structure according to the first or second aspect, the elastic member is integrated with one of the operation panel (16, 17) and the support frame (23). It is comprised with the made leaf spring member (22b-22e),
The tip (c) of the leaf spring members (22b to 22e) is coupled to the other member of the operation panel (16, 17) and the support frame (23).

  According to this, the effect of Claim 1 or 2 is favorably achieved by the leaf spring members (22b to 22e) integrated on either one of the operation panel (16, 17) and the support frame (23). Can demonstrate.

  As in the invention according to claim 4, in the operation panel assembly structure according to claim 3, the leaf spring members (22b to 22e) and the operation panel (16, 17) and the support are formed by integral molding of a resin material. If it integrates with the member of any one side among frame bodies (23), a leaf spring member (22b-22e) can be efficiently made with high productivity.

  According to a fifth aspect of the present invention, in the operation panel assembly structure according to the third or fourth aspect, the pin portion (d) is formed at the tip end portion (c) of the leaf spring member (22b-22e), and the operation panel (16, 17) and the support frame (23) are formed with bearing portions (23a, 23b) on the other member, and the pin portion (d) is rotatably supported by the bearing portions (23a, 23b). It is characterized by.

  According to this, the deformation | transformation of a leaf | plate spring member (22b-22e) can be suppressed by rotating a pin part (d) within a bearing part (23a, 23b), and the stress of a leaf | plate spring member (22b-22e) can be reduced. .

According to a sixth aspect of the present invention, in the operation panel assembly structure according to the third aspect, the operation panels (16, 17) are resin-made support plates (16a, 17a) that support the operation members (16a, 17a) so as to be manually operable. 22), and the support frame (23) is made of resin.
The leaf spring members (22b to 22e) are integrally formed on the outer edge portion of the support plate (22), and the pin portion (d) is integrally formed on the tip portion (c) of the leaf spring members (22b to 22e).
The support frame (23) is integrally formed with a substantially cylindrical bearing portion (23a, 23b), and the pin portion (d) is rotatably supported by the bearing portion (23a, 23b).

  Thereby, the effect of Claim 4 and Claim 5 can be show | played together.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The present embodiment shows a specific example in which the present invention is applied to an operation panel of an in-vehicle electric device. FIG. 1 shows a collective operation panel display device 10 arranged near the center of a vehicle panel (instrument panel, not shown) in the vehicle left-right (width) direction of an instrument panel (not shown) located in the front of the vehicle interior.

  In this collective operation panel display device 10, a display / operation panel unit 11 is arranged at the center in the left-right direction of the vehicle. The display / operation panel unit 11 is provided with an air conditioning display screen 12 and an audio display screen 13 using liquid crystal, and various operation members 14 and 15 for air conditioning and audio are provided as a display / operation panel unit. 11 is provided.

  An audio operation panel 16 is arranged on the left side of the central display / operation panel unit 11, and an air conditioning operation panel 17 is arranged on the right side of the display / operation panel unit 11. Both the operation panels 16 and 17 are movable (floating island-like) panel members that can be displaced in the vertical and horizontal directions of the vehicle.

  Here, the audio operation panel 16 is provided with a large number of operation members 16a for various operations of the vehicle audio apparatus. The air conditioning operation panel 17 is provided with a large number of operation members 17a for various operations of the vehicle air conditioner.

  Here, both the operation panels 16 and 17 have a shape having an outer shape extending in the vehicle vertical direction along the left and right side portions of the central display / operation panel portion 11. Therefore, a large number of the operation members 16a and 17a are arranged along the direction in which the operation panels 16 and 17 are elongated (the vehicle vertical direction).

  A skin design member forming a part of the design surface of the instrument panel is fitted and mounted around the collective operation panel display device 10 and the operation panels 16 and 17. In FIG. 1, only the skin design member 18 that is fitted and attached to the left audio operation panel 16 is illustrated among the skin design members.

  Since the outer shape of the right air conditioning operation panel 17 is symmetrical to the audio operation panel 16, a skin design member (not shown) fitted to and attached to the right air conditioning operation panel 17 is also the skin. The shape is symmetrical to the design member 18.

  Since the left audio operation panel 16 and the right air conditioning operation panel 17 basically have the same configuration and the same assembly structure, the following specific description is an example of the audio operation panel 16. Take it.

  FIG. 2 is a perspective view of the skin design member 18 alone, and the skin design member 18 has an opening 18 a corresponding to the outer shape of the audio operation panel 16. FIG. 3 shows a state in which the skin design member 18 is fitted and mounted around the audio operation panel 16. Specifically, the skin design member 18 includes a plate-like resin member having a predetermined rigidity and a film-like member made of a flexible synthetic leather material fixed to the surface of the resin member.

  FIG. 4 shows an exploded state of the left audio operation panel 16 and its support frame 23. Specifically, the audio operation panel 16 includes a resin case member 21 that accommodates a large number of operation members 16a so as to be manually operable in a direction perpendicular to the paper surface of FIG. 4 and a case member disposed on the back side of the case member 21. 21 and a resin-made support plate 22 that are integrally coupled to the substrate 21.

  FIG. 5 is a front view of the support plate 22 alone, and FIG. 6 is a partially enlarged perspective view thereof. In the support plate 22, a rectangular tube portion 22a having a rectangular cross section shown in FIG. The same number (8 in this example) of the rectangular tube portions 22a as the operation members 16a are provided corresponding to the operation members 16a. Each operation member 16a is slidably fitted and supported by the rectangular tube portion 22a. FIG. 7 shows an assembling correspondence between each operation member 16a and the rectangular tube portion 22a. An arrow A in FIG. 7 indicates a sliding direction of the operation member 16a.

  Further, the inner space of each square tube portion 22a is used as a light guide path for irradiating a display mark provided on the upper surface portion of each operation member 16a. A circuit board (not shown) that is electrically connected to each operation member 16 a is disposed on the back side of the support plate 22, and the circuit board is integrally coupled to the support plate 22.

  The outer shape of the support plate 22 is elongated in the vehicle vertical direction along the outer shape of the audio operation panel 16. And four leaf | plate spring members 22b-22e are integrally molded like FIG. 5 at the long side part extended in a vehicle up-down direction among the outer edge parts of the support plate 22. As shown in FIG.

  Of the four leaf spring members 22b to 22e, the leaf spring members 22b and 22c are disposed on the left long side portion of the support plate 22, and the leaf spring members 22d and 22e are disposed on the right long side portion of the support plate 22. ing.

  The four leaf spring members 22b to 22e have the same shape, but the upper left and right leaf spring members 22b and 22d and the lower left and right leaf spring members 22c to 22e are respectively left and right at the same vertical position. They are arranged symmetrically. Further, the left and right upper and lower leaf spring members 22b and 22c and the right and left upper and lower leaf spring members 22d and 22e are arranged vertically symmetrically.

  FIG. 8 is an enlarged perspective view around the left upper leaf spring member 22b, and FIG. 9 is an enlarged front view around the left lower leaf spring member 22c. Since the upper and lower leaf spring members 22d and 22e on the right side have the same shape, the enlarged illustration is omitted. The leaf spring members 22b to 22e are thin plate-like members protruding outward from the left and right long sides of the support plate 22, and a substantially V-shaped curved portion a is formed at an intermediate portion thereof to form a thin plate-like root. An elastic (spring) reaction force is generated between the part b and the tip part c.

  Further, a pin portion d having a height H protruding outward by a predetermined amount from the thin plate-shaped width W (FIG. 8) is integrally formed at the distal end portion c of the leaf spring members 22b to 22e. The pin portion d has a conical pin shape whose outer diameter gradually decreases toward bearing portions 23a and 23b described later.

  Next, in FIG. 4 described above, the support frame 23 has three frame openings corresponding to the outer shapes of the central display / operation panel 11, the left audio operation panel 16, and the right air conditioning operation panel 17. FIG. 4 shows only the left frame opening shape peripheral portion corresponding to the audio operation panel 16 in the support frame body 23.

  Four bearing portions 23a and 23b are formed in the left frame opening shape peripheral portion corresponding to the formation portions of the four leaf spring members 22b to 22e. In FIG. 4, only the left bearings 23a and 23b among the four bearings are shown, but the right bearings have the same shape as the left bearings 23a and 23b. The four bearing portions 23 a and 23 b are integrally formed with the support frame body 23.

  The pin part d of the front-end | tip part c of each leaf | plate spring member 22b-22e is inserted in these four bearing parts 23a and 23b, and the pin part d is rotatably supported by the bearing parts 23a and 23b. Yes.

  FIG. 10 is an enlarged perspective view of the upper left bearing portion 23a, and FIG. 11 is an enlarged perspective view of the lower left bearing portion 23b. The bearing portions 23a and 23b are basically cylindrical, but the notch portion e for inserting the thin plate-shaped portion adjacent to the pin portion d of the tip portion c of each leaf spring member 22b to 22e is cylindrical. It is formed so as to extend in the axial direction of the shape. The height (axial height) of the notch e is set to be equal to or greater than the aforementioned width W dimension.

  Further, the inner diameters of the bearing portions 23a and 23b are set so as to increase on the inlet side of the bearing portions 23a and 23b and to decrease on the bottom side of the bearing portions 23a and 23b, corresponding to the conical pin shape of the pin portion d. doing.

  In this embodiment, ABS resin is used as the resin material constituting the case member 21, the support plate 22 and the support frame body 23, but it goes without saying that other resin materials other than ABS can be used. is there. In that case, since the support plate 22 integrally forms the leaf spring members 22b to 22e, it is preferable to select a material that can easily ensure elasticity.

  Next, the assembling method according to the present embodiment will be described. First, as shown in FIG. 4, the audio operation panel 16 is assembled as one unit part integrated in advance. That is, the support plate 22 is integrally coupled to the back side of the case member 21 and a large number of operation members 16 a are incorporated inside the case member 21. Further, a circuit board (not shown) is integrally coupled to the back side of the support plate 22.

  Next, the audio operation panel 16 constituting one unit part is assembled to the support frame 23 in this way. Specifically, the pin portions d of the tip portions c of the four leaf spring members 22b to 22e integrated with the support plate 22 of the audio operation panel 16 are replaced with the four bearing portions 23a and 23b of the support frame 23. Insert inside.

  Here, each bearing portion 23a, 23b is formed with a cylindrical axial cutout e, and the cutout e is adjacent to the pin portion d of each leaf spring member 22b-22e. Therefore, the pin portion d can be smoothly inserted into the bearing portions 23a and 23b without causing interference between the cylindrical shape of the bearing portions 23a and 23b and the thin plate-shaped portions of the leaf spring members 22b to 22e.

  Moreover, since the outer diameter of the pin portion d is set in a conical shape, the inner diameters of the bearing portions 23a and 23b are also set in a conical shape corresponding to the conical shape of the outer diameter of the pin portion d. The insertion work itself with the bearing portions 23a and 23b can be easily performed.

  And in the state which inserted the pin part d of each leaf | plate spring member 22b-22e in bearing part 23a, 23b, the audio operation panel 16 supports a support frame via only four leaf | plate spring members 22b-22e. The audio operation panel 16 is supported in a floating island shape so as to be displaceable within the range of the frame opening shape of the support frame 23.

  Here, the audio operation panel 16 tends to be lowered by its own weight, but the audio operation panel 16 stops at a position where the elastic reaction force of the four leaf spring members 22b to 22e and the force by its own weight are balanced. To do. If the elastic reaction force of the leaf spring members 22b to 22e against the force due to its own weight is designed to be sufficiently large, the amount of downward movement of the audio operation panel 16 due to its own weight will be small.

  Further, in a state where the pin portions d of the leaf spring members 22b to 22e have been inserted into the bearing portions 23a and 23b, the substantially V-shaped curved portion a is narrowed relative to the leaf spring members 22b to 22e. By applying an external force, an elastic (spring) reaction force is generated in each of the leaf spring members 22b to 22e. In each of the leaf spring members 22b to 22e, this elastic reaction force acts as a force for pressing the audio operation panel 16 toward the center of the frame opening shape of the support frame 23.

  As a result, in the assembled state in which the audio operation panel 16 is supported on the support frame 23 via the leaf spring members 22b to 22e, the audio operation panel is caused by the elastic reaction force of the four leaf spring members 22b to 22e. 16 can be held at a reference position with respect to the support frame 23, specifically, at the center position of the frame opening shape. That is, the initial position of the audio operation panel 16 is always automatically set to the center position of the frame opening shape.

  The air conditioning operation panel 17 may be assembled in the same manner as the audio operation panel 16 is assembled.

  The support frame 23 having finished the assembly of the audio operation panel 16, the air conditioning operation panel 17, and the central display / operation panel unit 11 is then assembled to the instrument panel side using a coupling means such as a screw.

  Thereafter, the opening 18a of the skin design member 18 is fitted to the outside of the outer shape of the audio operation panel 16 to fix the skin design member 18 to an instrument panel or the like. Here, the skin design member 18 specifically includes a number of instruments such as an instrument panel, a support frame 23, a member on the vehicle center console box side, a peripheral member (air-conditioning outlet member) above the collective operation panel display device 10, and the like. Fixed to the site.

  Therefore, it is inevitable that the position of the opening 18a of the skin design member 18 changes to some extent for each vehicle.

  However, according to the present embodiment, as described above, the audio operation panel 16 is supported by the four leaf spring members 22b to 22e in a floating island shape so as to be displaceable within the range of the frame opening shape of the support frame body 23. The initial position of the audio operation panel 16 is always held at the center position of the frame opening shape of the support frame 23 by the elastic reaction force of the four leaf spring members 22b to 22e. For this reason, the audio operation panel 16 does not move to the end position within the frame opening shape of the support frame 23.

  As a result, even if the position of the opening 18a of the skin design member 18 changes to some extent for each vehicle, the position of the audio operation panel 16 is opened from the initial position (center position) as the opening position changes. The opening portion 18a of the skin design member 18 can be fitted to the outside of the outer shape of the audio operation panel 16 with only a slight change corresponding to the actual position of the portion 18a.

  Accordingly, the audio design panel 18 can be fitted to the outside of the outer shape of the audio operation panel 16 while fitting the opening 18a of the skin design member 18 without specially adjusting the position of the audio operation panel 16. The fitting operation of the skin design member 18 can be performed very simply by slightly changing the position of the operation panel 16 for use.

  Moreover, even if the position of the opening 18a of the skin design member 18 changes, the position of the audio operation panel 16 can be made to follow the position of the opening 18a by the elastic reaction force of the leaf spring members 22b to 22e. The fitting gap between the opening 18a of the design member 18 and the outer edge of the audio operation panel 16 can be kept constant over the entire circumference. Therefore, the appearance of the fitting portion between the skin design member 18 and the operation panel 16 can always be maintained in a good state.

  Further, when the position of the audio operation panel 16 changes following the position of the opening 18a, the pin portions d of the leaf spring members 22b to 22e rotate within the bearing portions 23a and 23b, so that the leaf spring member 22b. It is possible to reduce the stress generated in the leaf spring members 22b to 22e by suppressing the amount of elastic deformation of .about.22e.

  In order to allow the pin portion d to rotate within the bearing portions 23a and 23b, the width of the notch portion e (the width dimension in the circumferential direction) of the bearing portions 23a and 23b is set to the plate thickness of the leaf spring members 22b to 22e. It is large enough to be several times the size.

  It goes without saying that the above-described effects can be exhibited in the same manner in the assembly structure on the air conditioning operation panel 17 side.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be variously modified as follows.

  (1) The number of leaf spring members 22b to 22e is not limited to four, and may be increased or decreased variously according to the shape of the operation panels 16 and 17 and the like.

  (2) In the above-described embodiment, the leaf spring members 22b to 22e are integrally formed on the support plate 22 on the operation panels 16 and 17, but the leaf spring members 22b to 22e are integrally formed on the support frame body 23 side. The bearing portions 23a and 23b may be integrally formed on the support plate 22 on the operation panels 16 and 17 side.

  (3) In the above-described embodiment, the plate spring members 22b to 22e are configured by resin plate springs integrally formed on the support plate 22 on the operation panels 16 and 17, but the plate spring members 22b to 22e are metal plates. You may comprise with a spring and you may integrate this metal plate spring in the support plate 22 or the support frame body 23 side by methods, such as insert molding.

  (4) Instead of the leaf spring members 22b to 22e, it is also possible to use a coiled spring member, a rubber member or the like. In short, any elastic member that applies an elastic force to the operation panels 16 and 17 can be used. Good.

  (5) In the above-described embodiment, the application example of the present invention to the in-vehicle electric device has been described. However, the present invention can be widely applied to consumer products such as home appliances.

It is a perspective view of the collective operation panel display device for vehicles which shows one embodiment of the present invention. It is a perspective view of the skin design member simple substance shown in FIG. It is a perspective view which shows the fitting assembly state of the outer skin design member shown in FIG. 1, and the operation panel for audio. It is a principal part perspective view which shows the assembly | attachment process of the operation panel for audio | voices, and a support frame. It is a front view of the support plate of the audio operation panel. FIG. 6 is a partially enlarged perspective view of the support plate shown in FIG. 5. It is a disassembled perspective view which shows the assembly | attachment correspondence of the square cylinder part of a support plate shown in FIG. 5, and an operation member. FIG. 6 is an enlarged perspective view of the periphery of a leaf spring member of a support plate of the audio operation panel. It is an enlarged front view of the periphery of another leaf spring member of the support plate of the operation panel for audio. It is an expansion perspective view of the bearing part periphery in a support frame. It is an expansion perspective view of the other bearing part periphery in a support frame.

Explanation of symbols

16, 17 ... operation panel, 16a, 17a ... operation member, 18 ... skin design member,
22 ... support plate, 22b-22e ... leaf spring member, 23 ... support frame,
23a, 23b ... bearing portion, d ... pin portion.

Claims (6)

An operation panel (16, 17) having an operation member (16a, 17a) for generating an operation signal of the electric device is supported to be displaceable with respect to the support frame (23), and the operation panel (16, 17) In the operation panel assembly structure in which the outer skin design member (18) is fitted and mounted around
An elastic member (22b-22e) is interposed between the operation panel (16, 17) and the support frame (23),
The elastic members (22b to 22e) support the operation panel (16, 17) to be displaceable with respect to the support frame (23), and also support the operation panel (16, 17) to the support frame ( 23) An operation panel assembly structure characterized by exhibiting an elastic force to be held at the inner reference position. The operation panel (16, 17) has a shape having an elongated shape, and a plurality of the operation members (16a, 17a) are arranged along the elongated direction.
The elastic members (22b to 22e) are arranged at a plurality of locations between two long sides facing each other and the inner edge of the support frame (23) in the elongated outer shape. The operation panel assembly structure according to claim 1. The elastic member is configured by a leaf spring member (22b to 22e) integrated on one side of the operation panel (16, 17) and the support frame (23).
The tip (c) of the leaf spring member (22b-22e) is coupled to the other member of the operation panel (16, 17) and the support frame (23). The operation panel assembly structure according to claim 1 or 2. The leaf spring members (22b to 22e) are integrated with any one of the operation panel (16, 17) and the support frame (23) by integral molding of a resin material. The operation panel assembly structure according to claim 3, wherein the operation panel is assembled. A pin portion (d) is formed at the tip end portion (c) of the leaf spring member (22b to 22e), and a bearing portion is provided on the other side member of the operation panel (16, 17) and the support frame body (23). The operation panel assembling structure according to claim 3 or 4, characterized in that (23a, 23b) is formed and the pin portion (d) is rotatably supported by the bearing portion (23a, 23b). The operation panel (16, 17) has a resin support plate (22) that supports the operation member (16a, 17a) so as to be manually operable, and the support frame (23) is made of resin. ,
The leaf spring members (22b to 22e) are integrally formed on the outer edge portion of the support plate (22), and a pin portion (d) is integrally formed on the distal end portion (c) of the leaf spring members (22b to 22e). And
The support frame (23) is integrally formed with a substantially cylindrical bearing portion (23a, 23b), and the pin portion (d) is rotatably supported by the bearing portion (23a, 23b). The operation panel assembly structure according to claim 3, wherein the operation panel is assembled.

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