JP4605234B2 - Washing machine lid structure - Google Patents

Description

  The present invention relates to an opening / closing structure for a lid of a washing machine that facilitates the opening / closing operation.

  Conventionally, a lid structure of this type of washing machine is provided with a damper mechanism in order to prevent a large collision sound from being generated when the lid is opened and closed (see, for example, Patent Document 1).

  12 shows a lid structure of a conventional washing machine described in Patent Document 1, FIG. 13 is a cutaway side view of a main part of the washing machine, and FIG. 14 is a partially cutaway side view of a lid part of the washing machine. Is shown.

  As shown in FIG. 12, the water tank 2 is housed in the outer box 1 of the washing machine body while supporting the vibration-proofing by the elastic support mechanism 3, and the stirring blade 5 for stirring the clothes is rotatable at the bottom of the water tank 2. The arranged washing and dewatering tub 4 is disposed so as to be dewatered and rotatable. The stirring blade 5 and the washing / dehydrating tub 4 are rotationally driven by a motor 7 fixed to the outer bottom of the water tub 2.

  A top cover 15 is attached to the uppermost part of the outer box 1, and a laundry entrance / exit 16 facing the inside of the washing / dehydrating tub 4 is provided at the center of the top cover 15, and can be opened and closed above the laundry entrance / exit 16. A flat lid 17 is pivotally supported. The lid body 17 includes a front lid 19 that is opened and closed by the user and a rear rear lid 18 that is rotatably connected. The lid body 17a indicates an opened state, and the front lid 19a is a rear lid. Bends parallel to 18a. Further, as shown in the lid body 17a, the lid body 17a is rotated in a substantially vertical state when opened.

  The user lifts the front lid 19 from the front K point, opens the lid 17 backward, opens and closes the clothes into and out of the washing and dewatering tub 4 via the laundry entrance 16, and the stirring blade 5 and the washing The cum dewatering tub 4 has a so-called vertical washing machine structure in which the motor 7 fixed to the outer bottom of the water tub 2 is driven to rotate substantially horizontally to perform washing or dehydration.

  In the cutaway side view of the main part of FIG. 13, the rear end portion of the rear lid 18 is formed with lateral shaft holes 20 on both the left and right side surfaces, while the top cover 15 has a shaft slidable in the shaft hole 20. A shaft support portion 22 having 21 projected laterally is projected, and the shaft hole 20 of the rear lid 18 is loosely fitted to the shaft 21 to pivotally support the lid body 17. A lever body 24 having a fan-shaped gear portion 29 is integrally formed below the shaft hole 20 of the rear lid 18, and the fan-shaped gear portion 29 formed at the lower end of the lever body 24 extends back and forth in the rear portion of the top cover 15. It meshes with a spur gear 31 of a rack 25 configured to be movable. The rack 25 is linked to a damper main body 27 having a resistance in the horizontal axis direction, which is connected to the piston rod 26 and fixed below the rear portion of the top cover 15.

  Further, in order to apply an urging force in the direction of opening or closing the lid body 17, the lever body 24 is engaged with a toggle spring 30 in which the arm of the torsion coil portion is extended outward, and the lid body shown in FIG. In the horizontal state, the lever body 24 is urged counterclockwise (arrow F) about the shaft hole 20 so as to close the lid body 17.

  The damper main body 27 is, for example, a fluid damper (oil damper), and when the piston rod 26 moves rearwardly in the outer box 28 in the direction of arrow G, the oil sealed in the outer box 28 passes through a narrow passage formed in the piston. By being pushed away, resistance is given to the movement of the piston rod 26. With respect to the movement of the piston in the forward direction indicated by the arrow C in the opposite direction, the oil in the outer box 28 passes through another flow path. It is configured not to give resistance by passing through without difficulty. That is, the damper main body 27 has a one-handed structure that provides resistance only to the backward movement (in the direction of arrow G) of the piston rod 26.

  Therefore, when the lid 17 is opened in the direction of arrow A, the lever body 24 is rotated about the shaft 21 in the B direction, and the rack 25 engaged with the fan-shaped gear portion 29 moves in the C direction. There is no resistance of the main body 27. On the other hand, when the lid body 17 is closed from the open state (E direction), the rack 25 meshing with the fan-shaped gear portion 29 moves rearward (G direction) and receives the resistance of the damper main body 27 to rotate the lid body 17. Attenuate.

  That is, when the lid 17 is opened, the lid 17 can be opened without resistance, and when the lid 17 is closed, the biasing force in the closing direction urged by the toggle spring 30 is relaxed and the lid 17 is closed. The intense collision sound is not generated.

Further, as shown in FIG. 14, the front lid 19 and the rear lid 18 of the lid 17 configured to be bent constitute a damper mechanism 39 or the like at the connecting portion so that the lid 17 is open with respect to the top cover 15. Alternatively, a sudden turning operation is prevented from occurring when the folding is performed in the closed state.
JP 2000-167290 A

  However, in the conventional configuration, when the lid body 17 is closed from the open state, a sudden impact sound or the like is eliminated. However, when the lid body 17 is opened from the closed state, the rear lid 18 is opened and the top cover 15 is opened. When stopping near substantially vertical, there is no resistance of the damper main body 27, so that the rear lid 18 and the stopper portion of the top cover 15 generate a violent collision sound.

  Further, in the conventional configuration, when the lid 17 is opened from the closed state, in addition to the resistance of the springs, the resistance to the rotational force due to the meshing of the gear portion 29 and the rack 25 also occurs at the same time. It will be a heavy lid opening work for the person.

  Further, in the conventional configuration, the rack 25 and the damper main body 27 are configured in the top cover 15, so that the fan-shaped gear portion 29 formed integrally with the lid body 17 and the spur gear 31 of the rack 25 are engaged with each other. In addition, member accuracy and assembly accuracy are required, and there are problems in productivity and the like.

  Further, in the conventional example, the configuration in which the lid 17 is divided into the front lid 19 and the rear lid 18 is shown. However, in general, a single-sheet lid that is not divided is often used. In the opening and closing operation, when the lid body 17 is lifted from the closed state by the effect of the damper main body 27, the inertial force of the entire lid body is applied, and the opening force is strongly opened by the toggle spring 30. This causes usability discomfort.

  In recent years, the design of washing machines has been diversified, and the cover has a curved surface. In particular, there are many examples with a convex spherical structure on the top to ensure strength when pressed from above. And in order to ensure intensity | strength, the thickness of a cover body is raised or it is set as the structure with thickness. In this case, in the two-sheet configuration of the front lid 19 and the rear lid 18, when the lid 17 is opened, the thickness of the overlap between the front lid 19 and the rear lid 18 increases, and the laundry entrance 16 Since it protrudes, the usability is significantly worsened.

  Therefore, the complicated design that forms the curved surface and the lid with enhanced strength are constructed with a single-layer lid that is not bent, and the structure that makes it easy to operate the impact sound prevention and lid opening / closing is a simple assembly process However, there is a demand for a configuration that does not generate an impact when the heavy lid is opened and closed.

In order to solve the above-described conventional problems, a lid structure for a washing machine according to the present invention includes a lid body that is freely opened and closed above a top cover placed on the upper part of the washing machine body, and an opening / closing rotation operation of the lid body. A toggle spring for switching an urging force in an opening direction or a closing direction at a predetermined angle therein, a lid spring for urging the lid body toward the opening side, and a rotary impact mitigating damper that attenuates the rotation of the lid body And the shock absorbing damper is housed in a damper holder that is rotatably slidable, the damper holder is fixed to the lid body, and the lid body is pivoted when the lid body is opened and closed. In addition, the lid spring, a spring shaft that supports the lid spring, the impact damping damper, the damper holding body, and the like are provided inside the space portion behind the lid body. The lid is formed as a unit, and the lid Is attached to the top cover in a free state in which the lid is open and there is no biasing force of the lid spring, and one end of the lid spring is extended below the lid, and the top The end of the lid spring is inserted and engaged from a substantially vertical direction to a lid spring insertion hole formed in the top cover from above the cover, and the lid body is open and free of biasing force of the lid spring. A lid is attached to the top cover so that the lid can be freely opened and closed .

  As a result, the lid incorporating each member is prepared in advance as an integral unit member and can be attached to the top cover from above, so it can be assembled simply by attaching the lid to the top cover from above. The work is completed, and a lid structure for a washing machine with excellent productivity can be realized.

The lid structure of the washing machine of the present invention realizes a structure that can be smoothly opened and closed without generating a collision sound when opened and closed with a highly productive configuration. In addition, the lid spring can be assembled to the top cover because the lid body is inserted in the vertical direction in a free state without the biasing force of the lid spring and attached to the top cover so that the lid body can be opened and closed. Jigs are not required and productivity can be improved.

According to a first aspect of the present invention, there is provided a top cover placed on an upper portion of a washing machine body, a lid disposed on the top cover so as to be freely openable and closable, and an opening direction at a predetermined angle during the opening / closing rotation of the lid. Or a toggle spring that switches the biasing force in the closing direction, a lid spring that biases the lid body toward the open side, and a rotary impact cushioning damper that attenuates the rotation of the lid body, the impact cushioning damper Is housed in a damper holder that is rotatably slidable, the damper holder is fixed to the lid body, and a damping force is applied to the rotation of the lid body when the lid body is opened and closed. In addition, the lid body integrated with the lid spring, a spring shaft for supporting the lid spring, the shock absorbing damper, the damper holding body, and the like inside the space portion behind the lid body is integrated. And the lid on the top cover When wearing, the lid body is in an open state and the lid spring is in a free state without an urging force, and one end of the lid spring is extended below the lid body, and the top cover is above the top cover. The end of the lid spring is inserted and engaged in a lid spring insertion hole formed in the cover from a substantially vertical direction , and the lid is opened in a free state without the biasing force of the lid spring. Since the lid body can be opened and closed by attaching it to the cover, the lid body incorporating each member can be prepared in advance as an integral unit member and attached to the top cover from above. The assembly work is completed simply by attaching the lid to the top cover from above, and a lid structure for a washing machine with excellent productivity can be realized.

  In addition, when assembling the lid spring to the top cover, the lid can be inserted from the vertical direction in a free state without the repulsive force of the spring, so there is no need for special jigs and the productivity can be increased. .

  According to a second aspect of the present invention, in particular, the shock absorbing damper according to the first aspect of the present invention has a damper receiving structure or the like having a substantially Y-shaped receiving portion formed on the top cover with a flat portion formed at the tip of the damper shaft. By mounting the flat part from above, the flat part can be slid into and locked in the substantially Y-shaped receiving part, so that the assembly work can be done simply by attaching the lid to the top cover from above. Completed and can increase productivity.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external view of a washing machine according to a first embodiment of the present invention, FIG. 2 is a partially broken side view showing an opening / closing operation of a lid of the washing machine, and FIG. FIG. 4 is a cross-sectional view showing the structure of the lid spring portion of the lid of the washing machine.

  As shown in the external view of FIG. 1, a top cover 52 is placed on the upper part of the washing machine main body 51, and a lid 53 is disposed at the top center of the top cover 52 so as to be openable and closable. Has a control plate 55 for controlling the operation of the washing machine.

  The lid 53 is formed in a substantially circular plane shape having an excellent design aesthetics, and has a substantially circular transparent window 54 so that the inside can be visually observed at the center, and the user opens the lid 53. In some cases, it is lifted from a recess 56 formed in front of the top cover 52.

  2, the lid 53 is opened from the position of the closed state L0 to the position of LH at an angle close to substantially full opening, with the shaft hole 57 as the center of rotation. The structure has a configuration in which addition in the direction of opening or closing the lid 53 is switched by a toggle spring 66 described later.

  To open the lid 53 of the user, the lid 53 is lifted from the closed state L0 to a position of a slight height L1, and when the intermediate point L2 is passed, a toggle spring 66 which will be described later starts to switch the addition direction, and L3 If it is rotated to the position, even if the hand is released by the additional force of the toggle spring 66 structure, it automatically lifts to the open position LH.

  When closing from the open state of LH, if the position is passed to the position of L2 past the position of L3, the toggle spring 66 starts to switch the addition direction, and if it is closed to the position of L1, the weight of the lid and the structure of the toggle spring 66 described later It closes to the position of L0 naturally with additional force.

  When the lid 53 is opened as described above, from the closed state of L0 to the position of L3, the lid 53 is lifted by a force that resists the weight of the lid 53 and the toggle spring force biased to the closed state. After that, the rotating operation is relaxed by a damper structure, which will be described later, and a sudden impact is not given to the lid 53 stop position structure, and the opening position LH is reached.

  On the contrary, when closing, from the position of the open position LH to the position of the intermediate point L2 past the position L3, it is done manually by a force against the toggle spring force that biases the lid 53 in the closed state. When it is rotated and further closed to the position of L1, as described above, the lid 53 is naturally closed by the weight of the lid and a spring structure described later, and the closing operation is eased by the damper structure, so that the lid 53 is the top cover. Close to the position L0 without giving a sudden impact to 52.

  As shown in FIG. 3, the lid 53 includes a lid main body 58 having a substantially circular planar shape and a convex spherical cross section, and a substantially flat donut-shaped lid lower frame that supports the outer periphery of the lid main body 58 from below. 59 and a lid upper frame 60 having a substantially horseshoe-shaped planar shape covering the outer peripheral portion of the lid main body 58 from the upper surface. In particular, the lid main body 58 is formed by using, for example, a transparent resin member. The person can visually recognize the state of the laundry clothes inside.

  A stepped portion 61 is formed at the rear of the lid body 58, and a lid cover 62 on a flat plate formed of a non-transparent material is attached from above to be a connecting component of the horseshoe-shaped lid upper frame 60, which will be described later. The structure is designed so that the internal structure is not visible from the lid body 58 of the transparent resin member.

A hinge part 63 is integrally formed on the rear side of the lid lower frame 59 so as to protrude, and the shaft hole 57 that is the pivotal operation center for opening and closing the lid 53 and the movable arm 67 of the toggle spring 66 are locked. The movable end 65 and the like are configured.

  The toggle spring 66 comprises a movable side arm 67 having both ends of a torsion coil spring extending outward, and a fixed side arm 64. The fixed side arm 64 is pivotally supported by the top cover 52 with its fixed end 99 being supported. The movable arm 67 is pivotally locked to the movable end 65 at the tip position of the hinge part 63 of the lid 53.

  If the position of the movable end 65 is on the right side in FIG. 3 with respect to a virtual line W connecting the fixed end 99 and the center of the shaft hole 57 that is the rotation center of the lid 53, the toggle spring 66 is indicated by an arrow S in FIG. The movable end 65 is urged in the direction shown, and if the position of the movable end 65 is on the left side with respect to the virtual line W, the movable end 65 is urged in the direction indicated by the arrow P in FIG.

  In addition, when the cover body 53 is located on the extension of the imaginary line W, it is a place where the direction of the addition of the spring force of the toggle spring 66 is switched at the position L2 shown in FIG.

  Therefore, when the lid 53 is in the closed state (shown at the position LO in FIG. 3), the movable arm 67 urges the lid 53 in the closed state around the shaft hole 57 in the counterclockwise direction. In the open state (shown at the position of LH opened substantially vertically as indicated by the dotted line in FIG. 3), the hinge part 63 rotates downward (position H as indicated by the dotted line in FIG. 3), and the axis of the lid 53 It is urged to open in the clockwise direction around the hole 57.

  4A and 4B, the lid spring 69 and the lid spring 69 are formed in the space 100 formed when the lid lower frame body 59 is attached to the rear of the lid body 58. The end of the cover spring 69 is made of a metal steel plate or the like that pressurizes the spring pressure, and a cover reinforcing plate 79 fixed to the cover lower frame body 59 is provided.

  The other end 101 of the lid spring 69 is directed downward, and is inserted and engaged with the top cover reinforcing plate 76 attached to the top cover 52 from above.

  In FIG. 4A in which the lid 53 is closed, the lid spring 69 is subjected to a repulsive force that bends approximately 90 degrees to open the lid 53 via the lid reinforcing plate 79 and rotates the spring shaft 80. It is added clockwise around the center (the lid hinge shaft 77 at the center of rotation of the lid 53 is the same). At this time, the toggle spring 66 urges the lid 53 to close in the counterclockwise direction via the hinge portion 63, and the repulsive force to open the lid of the lid spring 69 causes the lid by the toggle spring 66 to open. Since it is set smaller than the sum of the urging force to close and the weight due to the weight of the lid 53 itself, the lid 53 holds the closed state.

  In the state where the lid 53 is lifted up to a substantially vertical position and opened as shown in FIG. 4B, a biasing force that opens the lid 53 substantially vertically is acted on by the toggle spring 66. Opening is maintained, and the lid spring 69 extends in a substantially vertical free shape, and there is no repulsive force to open the lid 53 via the lid reinforcing plate 79.

  As described with reference to FIG. 3, the lid 53 in recent years has a relatively strong and heavy structure due to the coupling of the lid body 58 of the transparent resin member with the lid lower frame 59 and the lid upper frame 60. In order to reduce the load when working to open the lid 53, the spring force of the lid spring 69 is the strongest when the lid 53 is closed. As described above, in order to support a relatively strong spring force, the lid reinforcing plate 79 is composed of a horizontally long metal steel plate or the like, so that one end of the lid spring 69 does not directly apply spring pressure to the lid lower frame 59. And the rear part of the lid lower frame body 59 is reinforced to withstand the lid opening / closing operation.

  Further, as described above, the function of the lid spring 69 is to reduce the work force of the user when performing the opening operation from the closed state of the lid 53 in FIG. ) In the open state, there is a free state with no urging force. Therefore, when assembling the lid spring 69 to the top cover 52, a special jig or the like is not required by inserting the lid 53 of FIG. 4B from the vertical direction in a free state without the repulsive force of the spring. It becomes possible.

FIG. 5 is an exploded view showing the attachment of the lid portion of the washing machine according to the first embodiment of the present invention, FIG. 6 is an exploded view of the lid of the washing machine, and FIG. FIG. 8 is an exploded arrow view of the structure of the shock damping damper of the washing machine lid, FIG. 8A is a left side view of the shock damping damper of the lid of the washing machine, FIG. FIG. 9 is a sectional view showing the NN section in FIG. 5 of the lid of the washing machine, FIG. 10 is a sectional view showing the RR section in FIG. 9 of the lid of the washing machine,
FIG. 11 is a view showing the operation of the lid opening / closing and the impact relaxation damper of the washing machine.

  In the exploded arrow view of FIG. 5, the lid 53 integrally configured so that the lid body 58 is sandwiched from above and below by the lid lower frame body 59 and the lid upper frame body 60 is the other end of the hinge portion 63 and the lid spring 69. 101, shock mitigating damper 72 (the configuration will be described in detail later), etc., are mounted on lid installation portion 70 from above top cover 52 while directing the operation parts downward.

  A toggle spring 66 that engages with a hinge portion 63 of the lid lower frame body 59 is disposed inside the top cover 52 at the rear of the lid installation portion 70, and the top corresponding to the shaft hole 57 of the lid lower frame body 59. A cover portion shaft support hole 71, a top cover reinforcing plate 76 made of a steel plate or the like having a cover spring insertion hole 75 for inserting and holding the cover spring 69, and a substantially Y-shaped receiving portion 74 for mounting the shock relaxation damper 72 are provided. The shock absorbing damper receiving structure 73 and the like are provided.

  As described with reference to FIG. 4B, the lid spring 69 has the other end 101 directed downward in a free state without the repulsive force of the spring before the lid 53 is assembled to the top cover 52. The other end 101 is inserted and engaged with the top cover reinforcing plate 76 disposed on the cover 52.

  The lid 53 is attached to the top cover 52 from above, and the lid hinge shaft 77 is inserted and held in the shaft hole 57 and the top cover side shaft support hole 71 from the horizontal direction, so that the lid 53 can be freely opened and closed to the top cover 52. Composed.

  In the exploded view of the lid of FIG. 6, the lid main body 58 having a substantially circular planar shape forms a horseshoe-shaped stepped portion 78 around it and a stepped portion 61 at the rear, and the lid upper frame having a substantially horseshoe shaped planar shape. The body 60 and the lid cover 62 on the flat plate are fixed by fitting, welding, adhesion, or the like.

  The substantially donut-shaped lid lower frame 59 is attached to a boss 83 integrally formed on the back surface of the horseshoe-shaped stepped portion 78 from below the lid body 58 with a plurality of mounting screws 82.

  A space portion 100 (shown in FIG. 4) to which a lid lower frame body 59 is attached below the stepped portion 61 on the rear side of the lid main body 58 includes a lid spring 69, a spring shaft 80 that supports the lid spring 69, and a lid spring 69. The lid reinforcing plate 79 and the damper holding body 81 for inserting and holding the shock absorbing damper 72 in a rotatable manner are provided.

  The spring shaft 80, the axis of the lid hinge shaft 77 at the center of rotation of the lid 53 shown in FIG. 5, and the axis of rotation of the shock absorbing damper 72 are configured to be substantially the same rotational axis. Yes.

For the user, internal structures such as the lid spring 69 and the lid reinforcing plate 79 inside the lid body 53 that are unnecessary to be seen in actual use are not seen through the lid body 58 of the transparent resin member. The lid cover 62 is configured in consideration of design, and the lid body 53 incorporating the respective members as described above is prepared as a unitary unit member as shown in FIG. Further, the top cover 52 is attached.

  The lid 53 has a complicated design with a curved surface and a structure with increased strength, and is integrated with the unit by incorporating the spring structure and the structure of the shock mitigation damper 72. Since it can be easily mounted even when assembled, it is possible to secure flexibility in the production process and to have a highly productive lid structure.

  In the exploded view of the shock damper shown in FIG. 7 and (a) the left side view, (b) the cross-sectional view, and (c) the right side view of FIG. A damper body 84 having a shape, a damper shaft 85, and a convex portion 86 formed integrally on the bottom outer bottom of the damper body 84, and the relative rotation between the damper shaft 85 and the damper body 84 indicated by an arrow M. For the operation, a damping action for buffering the movement of rotation works by the resistance force of viscous oil (described later) sealed in the damper main body 84.

  The damper main body 84 portion is rotatably inserted into the cylindrical damper holding body 81, and the convex portion 86 protruding from the bottom of the damper main body 84 is aligned with an opening 87 formed at the end of the damper holding body 81. It is loosely fitted so as to restrict the rotation of the part. The damper holding body 81 into which the damper main body 84 is inserted is fixed to the lid lower frame 59 shown in FIGS. 4 and 6 by an attachment hinge 88 formed integrally with the damper holding body 81. Therefore, when the damper shaft 85 is fixed in a rotationally non-rotatable manner in the rotational direction by the damper receiving structure 73 of the top cover 52, and the damper holding body 81 rotates when the lid 53 is opened and closed, the convex portion 86 and the opening 87 are formed. The rotating part of the play rotates without resistance, but the rotation restricting angle part has a damping action on the rotating operation.

  With reference to FIG. 8, the configuration and operation of the shock relaxation damper 72 will be described in detail.

  In the cross-sectional view of FIG. 8B, a damper shaft 85 having a rotating cylinder shaft 89 having a stirring blade 92 is inserted into the inner diameter portion of a bottomed cylindrical damper main body 84, and an oil sealing O is provided on the outer periphery of the damper shaft 85. The ring 90 is shaft-sealed with a cap member 91.

  Viscous oil or the like is sealed in a gap 94 between the rotating cylinder shaft 89 and the inner diameter portion of the damper main body 84 at a portion inserted into the damper main body 84 of the damper shaft 85, and the damper shaft 85, the damper main body 84, At the time of the relative rotational movement, a damping action that buffers the rotational movement works due to the viscosity of the oil. The agitating blade 92 is formed with a through-hole 93 for passage of oil to serve as an oil passage when the rotating cylinder 89 rotates, and the passage of the through-hole 93 is related to the viscosity and amount of the enclosed oil. Set the shape and number.

  A flat surface portion 95 is formed at the tip of the damper shaft 85 and is inserted into a substantially Y-shaped receiving portion 74 of the damper receiving structure 73 of the top cover 52 (not shown in FIG. 8) to be locked in a non-rotatable state. Then, when the attachment hinge 88 fixed to the lid 53 (not shown in FIG. 8) rotates around the axis of the damper shaft 85 by the opening / closing operation of the lid 53, the opening 87 of the damper holding body 81 becomes the damper. At the rotation angle after contacting the end surface of the convex portion 86 of the main body 84 in the rotation direction, the rotation operation receives resistance and cushions.

  That is, in the side view of FIG. 8A, the attachment hinge 88 is rotated during the so-called play (angle T in the figure) until the side surface of the convex portion 86 contacts the end surface of the opening 87. 88 rotates without resistance, but in the rotating operation after the contact, the shock absorbing damper 72 acts as a buffer and the lid 53 opens and closes.

That is, in the opening / closing operation of the lid 53, a play is provided so that the damping action is not applied to all the rotations, and the damping action is applied only to a predetermined angle, and the opening / closing operation of the lid 53 is performed smoothly. It is intended to prevent the impact of time.

  It is to be noted that the structure of the play is not constituted by a single member of the damper main body 84, but is constituted by the opening 87 formed in the damper holding body 81 and the convex portion 86 of the damper main body 84. This is because the angle of play of the operation can be easily and simply configured only by the shape of the opening 87.

  In addition, a configuration in which the damper shaft 85 of the shock absorbing damper 72 is mounted on the top cover side damper receiving structure 73 in a non-rotatable manner is such that the flat portion 95 at the tip of the damper shaft 85 is attached to the substantially Y-shaped receiving portion 74. 8 (c) is slid from below and attached and locked, and as described in FIG. 5, assembling work is performed simply by attaching the lid 53 to the top cover 52 from above. This is a configuration that increases productivity.

  In the cross-sectional view around the rotation axis of the lid body 53 in FIG. 9, the substantially central portion (R−) of the lid body 58 and the lid cover 62 inside the space 100 formed by assembling the lid body 58 and the lid lower frame body 59. (Shown by line R) is provided with a shock damper 72 that is rotatably inserted into a cylindrical damper holder 81, and on the same axis (indicated by JJ) with the shock damper 72 interposed therebetween. A lid spring 69 and a spring shaft 80 are arranged on the left and right sides, respectively.

  On the left and right outer sides of the lid spring 69, a lid hinge shaft 77 that pivotally supports the lid 53 so as to be openable and closable with respect to the top cover 52 is arranged on the same axis as the spring shaft 80. It is inserted and held in the shaft hole 57 and the top cover side shaft support hole 71 of the hinge part 63.

  Further, the cover spring 69 supports the spring shaft 80 by passing it through the center of the coil of the spring, and the spring shaft 80 has small holes 103 in the plurality of cut pieces 102 of the cover reinforcing plate 79 made of a metal steel plate or the like. To support.

  Referring to FIG. 10 showing an RR cross-section passing through the shock relaxation damper 72, the mounting of the shock relaxation damper 72 will be described. A mounting hinge 88 extending integrally with the damper holding body 81 is integrally formed with the lid lower frame body 59. One of the plurality of bosses 105 and the tapping screw 104 are nipped and fixed.

  As described above, the lid reinforcing plate 79 is formed in a horizontally long shape so as to cover the lid springs 69 arranged on the left and right sides of the shock buffering damper 72 while holding and holding the shock buffering damper 72. The shock relaxation damper 72, the lid spring 69, the lid hinge shaft 77, the toggle spring (shown in FIG. 3 and FIG. It functions as a reinforcing member of the lid 53 that receives a load from a not-shown) or the like.

  Further, the axis of the lid hinge shaft 77 of the lid 53, the damper shaft 85 of the impact mitigating damper 72, and the spring shaft 80 of the lid spring 69 are set to substantially the same line as indicated by the line JJ as shown in FIG. Then, the opening / closing operation around the lid hinge shaft 77 of the lid 53, the rotation operation of the shock absorbing damper 72, and the rotation operation of the lid spring 69 are made the same axis, so that the operation is simplified. In order to add the spring load to the lid body 53 and to transmit the damping force to the rotational operation of the lid body 53, another structure other than the rotation transmission is not required.

  In the drawing showing the opening / closing of the lid 53 and the operation of the shock absorbing damper 72 in FIG. 11, when the lid 53 of the pattern 1) (L0 in FIG. 2) is in the closed state, the convex portion 86 is the opening of the damper holder 81. The part 87 is in a state without resistance in the rotational direction, and even if the lid 53 is rotated in the direction of the arrow Q, the impact is reduced during the rotation during the play of the angle T at which the non-opening part 96 does not contact. The damping action of the damper 72 does not act on the rotation of the lid 53.

  Further, the lid 53 is opened, and the convex portion 86 is not in contact with the non-opening portion 96 even in the state of 2). Therefore, the damping action of the shock absorbing damper 72 does not occur and the lid 53 can be opened smoothly without resistance. I can do it.

  When the lid 53 is further opened to the position 3), the toggle spring 66 switches to a load that urges the lid 53 in the opening direction without manually opening the lid 53, and the non-opening portion 96 comes into contact with the convex portion 86 at two upper and lower contact portions 97 until the damping action of the shock damper 72 starts to work until the lid 53 is opened at the position 4) (LH in FIG. 2), that is, substantially vertically. The damping action continues to work to mitigate the impact of opening.

  When the lid 53 is to be closed from the open state 4), the damping action does not work just by moving the contact portion 97 with which the non-opening portion 96 abuts from the convex portion 86, and the toggle spring 66 or Even if it is pushed down and closed to the state of 5) by a manual operation with a load that overcomes the biasing force of the lid spring 69 on the lid opening side as described above, the non-opening portion 96 does not come into contact with the convex portion 86. The damping action of the damper 72 does not occur and the lid 53 can be closed smoothly without resistance, and the damping action seems to work after the state 6) after the toggle spring 66 switches the biasing force to the lid 53 to close the lid. In addition, when the convex portion 86 and the non-opening portion 96 are in contact with each other at the contact point 98 opposite to the opened state, the lid 53 closes in the position 1), that is, in a substantially horizontal state. Damping action continues to work so as to alleviate the impact.

  About the lid structure of the washing machine comprised as mentioned above, the operation | movement, an effect | action, and an effect are demonstrated below.

  First, the lid 53 is constituted by a lid main body 58 and a lid lower frame body 59 having a substantially donut shape that supports the outer peripheral portion of the lid main body 58 from below, and the lid lower frame body 59 is attached to the lid body 53. Since the unit is integrated by installing the lid spring 69, the spring shaft 80 supporting the lid spring 69, the impact relaxation damper 72, the damper holder 81, and the like in the space portion behind the formed lid body, it has a curved surface. Complex design and high-strength configuration are possible, and the unit is integrated, so it can be configured in advance, etc., and can be easily installed even when assembled to the top cover 52, ensuring flexibility in the production process. It has a highly productive lid structure.

  In addition, a lid spring 69 that facilitates the opening operation of the heavy lid 53 is inserted into a top cover reinforcing plate 76 formed on the panel cover 52 from above the panel cover 52 in a free state without biasing force. As a result, the lid spring 69 can be assembled from the vertical direction in the free state without the repulsive force of the spring, so that no special jig or the like is required and productivity can be improved. I can do it.

  The shock absorbing damper 72 has a flat portion formed at the tip of the damper shaft 85, and the flat portion is slid into a damper receiving structure 73 having a substantially Y-shaped receiving portion 74 formed on the top cover 52. Since it can be stopped, the assembly work is completed simply by attaching the lid 53 to the top cover 52 from above, and the productivity can be increased.

  As described above, in the present embodiment, the structure of a washing machine that can be smoothly opened and closed without generating a collision sound during opening and closing can be realized with a highly productive configuration.

External view of washing machine in Embodiment 1 of the present invention Partially broken side view showing opening / closing operation of lid of washing machine Sectional drawing of the principal part showing the structure of the lid part of the washing machine Sectional drawing which shows the structure of the cover spring part of the cover body of the washing machine Exploded arrow view showing attachment of lid part of the washing machine Exploded view of the lid of the washing machine Exploded arrow view of the structure of the shock damper of the lid of the washing machine (A) Left side view of impact reducing damper of lid of washing machine, (b) Cross-sectional view of impact reducing damper of lid of washing machine, (c) Right side of impact reducing damper of lid of washing machine Area Sectional drawing which shows the NN cross section in FIG. 5 of the cover body of the washing machine Sectional drawing which shows the RR cross section in FIG. 9 of the cover body of the washing machine The figure which shows the operation of the lid body opening and closing and the impact relaxation damper of the washing machine Cross section of a conventional washing machine Broken side view of the main part of the washing machine Partially cutaway side view of the lid of the washing machine

51 Washing Machine Body 52 Top Cover 53 Lid Body 58 Lid Main Body 59 Lid Lower Frame 66 Toggle Spring 69 Lid Spring 72 Shock Mitigation Damper 73 Damper Receiving Structure 74 Abbreviated Y-Shaped Receptor 76 Top Cover Reinforcement Plate 80 Spring Shaft 81 Damper Holding body 85 Damper shaft 86 Convex part 87 Opening part 100 Space part

Claims (2)

A top cover placed on the top of the washing machine main body, a lid disposed on the top cover so as to be freely opened and closed, and attached in an opening direction or a closing direction at a predetermined angle during the opening / closing rotation of the lid. A toggle spring for switching the force, a lid spring for biasing the lid toward the open side, and a rotary impact cushioning damper that attenuates the pivoting of the lid, and the impact cushioning damper can be rotated and slid freely. The damper holding body is housed in a damper holding body, and the damper holding body is fixed to the lid body so that a damping force is applied to the rotation of the lid body when the lid body is opened and closed. The lid body is configured by unitizing the lid spring, a spring shaft that supports the lid spring, the impact relaxation damper, the damper holding body, and the like in the interior of the rear space, and the lid body Before attaching to the top cover A lid that is in a free state in which the lid is open and there is no biasing force of the lid spring, and one end of the lid spring extends below the lid, and the top cover is configured from above the top cover. The end portion of the lid spring is inserted and engaged in a spring insertion hole from a substantially vertical direction , and the lid body is attached to the top cover in a free state in which the lid body is open and there is no biasing force of the lid spring. A lid structure for a washing machine in which the lid is configured to be freely opened and closed . 2. The washing machine according to claim 1, wherein the shock absorbing damper is configured such that a flat portion is formed at a tip of the damper shaft, and the flat portion is mounted from above on a damper receiving structure having a substantially Y-shaped receiving portion formed on a top cover. Lid structure.

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