JP5643640B2 - Vehicle window opening and closing unit - Google Patents

Description

  The present invention relates to a window opening / closing unit of a vehicle provided with an opening / closing link mechanism for setting a swinging posture of a window plate member supported in a cabin so as to be swingable and openable.

  As a vehicle window opening / closing unit configured as described above, in Patent Document 1, a side glass (window plate material of the present invention) is supported so as to be swingable around a vertical axis with respect to a rear vertical frame of a cabin of a tractor, The structure provided with the link member and the buckle member (opening / closing link mechanism of the present invention) between the middle vertical frame of the cabin and the front end side of the side glass is described.

  In Patent Document 1, a support member is provided that protrudes rearward with respect to the middle vertical frame, and a linkage member that protrudes into the cabin with respect to the side glass is provided. The rear end of the support member and the linkage member are provided. A link member and a buckle member are connected to each other so as to be swingable about the longitudinal axis. When the link member and the buckle member are folded, the side glass can be maintained in the closed position, and the side glass can be operated to the open position by expanding the link member and the buckle member.

  Further, as a window opening / closing unit of a vehicle, Patent Document 2 discloses that a rear end side of a side glass (a window plate material of the present invention) is supported to be openable / closable with respect to a rear frame of a tractor cabin. A configuration with a locking device between the sides is described.

  In Patent Document 2, a hinge that supports a side glass so that it can be opened and closed by rotatably supporting a pivot shaft connected to the side glass with respect to a boss-shaped fixing portion provided in the rear frame is provided. Engagement recesses are formed at a plurality of locations in the circumferential direction on the upper surface of the boss portion, and a restriction pin that can be engaged with and disengaged from the engagement recess is fixed to the pivot shaft, and this restriction pin is attached to the engagement recess. A coil spring is provided. When the side glass is opened and closed from such a structure, the side glass can be held even in the half-open position by engaging the regulation pin with any of the plurality of engaging recesses. In another embodiment of Patent Document 2, a detent mechanism having a ball that engages and disengages with an engaging recess formed on a pivot shaft and a spring that biases the ball is also shown.

  Moreover, although not swinging open / close, Patent Document 3 discloses a configuration that can be opened / closed by sliding a front glass (window plate material of the present invention) provided at the rear part of a passenger car as a vehicle window opening / closing unit. ing. In Patent Document 3, a hinge supported by a support frame of a guide roller is shown as being equivalent to an opening / closing link mechanism with respect to the front glass, and the front glass is supported to be swingable with respect to the hinge.

  In addition, a lock mechanism that keeps the front glass closed is provided, and when the front glass is opened with the configuration of Patent Document 3, the front glass is slid rearward with the lock mechanism unlocked. Thus, the front glass is pushed out in the form of swinging to the outside of the rear glass by swinging of the hinge. When pushing out in this way, a part of the hinge is locked to the shaft of the stopper, so that the swinging posture is determined. In this state, the front glass can be slid rearwardly outside the rear glass.

JP 2002-347437 A JP 2008-196134 A JP-A-1-244919

  Taking a tractor as an example, during work, the window plate material (glass) provided in the cabin is mainly opened for ventilation, and in a configuration in which the window plate material swings and opens, the window plate material is used. When operating to the open posture, the intermediate posture may be maintained without opening to the limit.

  From such a viewpoint, in order to maintain the window plate material in an intermediate swinging posture, it is also conceivable to provide an engagement / disengagement structure at the pivotal shaft as described in Patent Document 2. However, in order to hold the window plate material at the pivot shaft part, a large holding torque is required. Therefore, a strong engagement structure having a strong spring and a deep groove-like engagement recess is provided. There is room for improvement in terms of increasing the size of the member and the weight of the structure.

  On the other hand, as shown in Patent Document 3, a member that operates integrally with the window plate material is provided with a stopper, and a structure that maintains the window member in an intermediate posture is provided by providing a shaft that engages and disengages with the stopper. Is also possible. However, in Patent Document 3, it is necessary to provide a stopper configured to move relative to the shaft when the relative swing angle between the hinge and the support frame changes, and the stopper is integrated with the hinge. For example, when the window plate material is held in a plurality of intermediate positions, a plurality of concave portions are required at a plurality of positions in the longitudinal direction, and the size of the stopper is increased. There is room for improvement in terms of invitation.

  An object of the present invention is to rationally configure a window opening / closing unit that can reliably hold a window plate material in an intermediate swinging posture.

A feature of the present invention is a vehicle window opening / closing unit provided with an opening / closing link mechanism for setting a swinging posture of a window plate material supported in a cabin so as to be swingable and openable.
A first bracket connected to the rear end of the cabin frame and extending rearward;
A second bracket connected to the front-rear midway part of the window plate material and extending from the lateral side of the vehicle body toward the lateral side of the vehicle body,
The open / close link mechanism has a first swing link and a second swing link that are foldably connected around a spindle axis, and an end portion of the first swing link opposite to the spindle axis is provided . the first axis about the relative pre-notated frame the spindle core parallel orientation, the rocking freely connected and supported to the rear end portion of the first bracket, a side opposite to the main axis core of the second oscillating link of the end portion, the second axis around the window plate with respect to the spindle core parallel orientation, wherein by the second swingably connected to and supported on the vehicle body Yokouchi end of the bracket, in the spindle core around A swing opening / closing posture of the window plate material is determined by setting a bending angle between the first swing link and the second swing link;
A holding mechanism that holds the bending angle in a state in which the window plate material is in an intermediate swinging posture that is intermediate between a closing posture and an opening limit posture;
The holding mechanism is formed at one end of two intermediate surfaces provided in an end portion of the first swing link and the second swing link on the side of the main shaft core, which is orthogonal to the main shaft core and is opposed to each other. A concave portion and a convex portion formed on the other, and disposed in a positional relationship in which the concave portion and the convex portion are elastically engaged in the intermediate swinging posture ;
In the state where the window plate member is in the closed position, the first bracket and the second bracket are located on the laterally outer side of the vehicle body from the laterally inner end of the frame .

According to this configuration, when the window plate member is swung, the bending angle between the first swing link and the second swing link changes. Thereby, when the window plate material is at a bending angle corresponding to the state in which the window plate material is in the intermediate swinging posture, the window plate member can be held in the intermediate swinging posture by engaging the concave portion and the convex portion. In addition, since the concave portion and the convex portion can be arranged in a region centered on the main axis, for example, compared with a configuration in which the concave portion and the convex portion linearly move relative to each other, the concave portion and the convex portion are configured to constitute a holding mechanism. It is not necessary to use a large member for forming the portion, and it is not necessary to add a special member. In addition, since the first swing link and the second swing link are bent around the spindle axis, the relative positional accuracy between the concave portion and the convex portion arranged with respect to the spindle axis can be maintained high, It becomes possible to reliably engage the concave portion and the convex portion.
Therefore, a window opening / closing unit that can reliably hold the window plate material in the intermediate swinging posture without using a large-sized member is configured.

The present invention may be configured such that the first axis and the second axis are located close to each other in a state where the window plate material is in the closed position.
According to the present invention, the holding mechanism has two convex portions formed at intersections of a virtual straight line that passes through the main axis in the diameter direction and a virtual circumference centered on the main axis on the one intermediate surface. The two concave portions formed on the other intermediate surface so that the two convex portions are engaged when the first swing link and the second swing link are in the intermediate swing posture. It may be provided.

  According to this, when the window plate material is in an intermediate swinging posture, two convex portions are engaged with the two concave portions, and compared with one in which one concave portion and one convex portion are engaged. Thus, a strong holding force can be obtained and the window plate material can be held in an intermediate swinging posture.

In the present invention, a difference in bending angle between the first swing link and the second swing link when the window plate material is in the closed posture and the open limit posture is set to 180 degrees,
Two auxiliary recesses into which the two projections are engaged may be formed on the other intermediate surface in a state where the window plate material is in the closed posture and the open limit posture.

According to this, when the window plate material is in the closed posture and the open limit posture, the two convex portions engage with the two auxiliary concave portions, and in this engagement, the two convex portions engage with the two auxiliary concave portions. The position of the part will be changed. Thereby, only by forming the two auxiliary recesses, the window plate material can be maintained in a posture with a strong holding force even when the window plate material is in the closed posture or the open limit posture.

According to the present invention, a block portion having two main intermediate surfaces as the intermediate surface is formed at an end of one of the first swing link and the second swing link on the side of the main spindle, and the first swing link And a fork portion having two sub-intermediate surfaces arranged opposite to the main intermediate surface as the intermediate surface and sandwiching the block portion as the intermediate surface,
A main connecting shaft that is disposed coaxially with the main shaft core and passes through the block portion and the fork portion is provided, and a restricting member that restricts displacement in the direction in which the interval between the fork portions is enlarged is the main connecting shaft and the fork. It may be formed between the two parts.

  According to this, since the two intermediate surfaces formed on the block portion are respectively arranged at positions where the two intermediate surfaces of the fork portion are sandwiched, the recesses and the convex portions are formed on the two intermediate surfaces and strong. A holding force can be obtained. In addition, since the main coupling shaft is disposed on the main axis and the coaxial core at a position penetrating each intermediate surface, and the displacement of the fork portion in the expansion direction is regulated by the regulating member, the concave portion and the convex portion A decrease in engagement force is suppressed and a strong holding force is obtained over a long period of time.

  In the present invention, the main connecting shaft may be used as a handle for artificial operation by causing the main connecting shaft to protrude from the opening / closing link mechanism.

  According to this, when the main coupling shaft is used as a handle for manual operation, the position of the main shaft core is changed, and the bending angle between the first swing link and the second swing link is easily changed with the change in position. As a result, the swinging posture of the window plate material can be easily set.

  The present invention may be provided with a biasing means capable of arbitrarily setting a biasing force in the engagement direction in the direction along the main axis of the concave portion and the convex portion by an artificial operation.

  According to this, by artificially setting the urging force acting in the engaging direction between the concave portion and the convex portion by human operation, for example, even when the engaging force between the concave portion and the convex portion is reduced due to wear, The required holding force can be obtained by increasing the power.

  In the present invention, an engaged portion that is concave in a direction perpendicular to the main spindle is formed on one of the ends of the first swing link and the second swing link on the main spindle side. An engaging portion that is convex in a direction perpendicular to the core is formed, and the engaged portion and the engaging portion are engaged with each other when the window plate is in the intermediate swinging posture. A relative positional relationship may be set.

  According to this, in a state where the window plate member is in the intermediate swinging posture, a state is reached in which the other engaging portion is engaged with one engaged portion of the first swing link and the second swing link. Therefore, it becomes possible to hold the window plate material in the intermediate swinging posture more reliably by the combined force of the holding force by the engagement and the holding force of the holding mechanism.

It is the whole tractor side view. It is sectional drawing which shows the opening / closing structure of a side glass. It is a top view of the opening-and-closing link mechanism in a closed posture. It is a top view of the opening-and-closing link mechanism in an intermediate swing posture. It is a top view of the opening-and-closing link mechanism in an open limit posture. It is sectional drawing of an opening-and-closing link mechanism. It is a disassembled perspective view of an opening / closing link mechanism. It is sectional drawing of the site | part of the main connection shaft of another embodiment (a). It is sectional drawing of the site | part of the main connection shaft of another embodiment (b).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
As shown in FIG. 1, an engine 4 is provided inside an engine bonnet 3 at the front of a vehicle body B having a pair of left and right front wheels 1 that can be steered (steered) and a pair of left and right rear wheels 2. A tractor as a vehicle is configured by including a driving seat 6 between the left and right rear wheel fenders 5 at the rear of the vehicle body B and including a cabin C that forms a driving space in which the driving seat 6 is accommodated.

  In this tractor, a transmission case 7 to which power from the engine 4 is transmitted is arranged below the driver's seat 6, and a protruding end is vertically moved by a hydraulic cylinder (not shown) at the rear end of the transmission case 7. A pair of left and right lift arms 8 operating in the direction are provided, and a power take-out shaft 9 is provided at the rear end of the transmission case 7.

  With such a configuration, a rotary tiller (not shown) is connected to the rear end of the vehicle body B through a three-point link mechanism and the like, and the three-point link mechanism is connected to the lift arm 8 so as to be movable up and down. By transmitting the driving force from the power take-off shaft 9 to the rotary tiller, the tilling work can be performed in a form of driving the rotary tiller. Further, by connecting a plow (not shown) to the rear end of the vehicle body B, the raising work can be performed.

  Inside the cabin C, a steering wheel 10 for steering the front wheel 1 is disposed at the front position of the driver seat 6, and an operation pedal 11 such as a clutch pedal is disposed on the lower side of both sides of the steering wheel 10. Has been. The cabin C has an airtight structure that prevents external dust, noise, and the like from entering the driving space, and an air conditioner 12 that performs cooling and heating at the rear of the roof portion, thereby improving the driving environment.

〔cabin〕
The cabin C includes a pair of left and right front frames 21 that are pillar-shaped at the front, a pair of left and right intermediate frames 22 that are pillar-shaped in the middle in the front-rear direction, and a pair of left and right rear frames 23 that are pillar-shaped at the rear. A roof 24 connected to these upper portions is provided. Further, a windshield 25 is provided at a front position of the cabin C, glass doors 26 are provided at both sides, a side glass 27 is provided at a rear position of the door 26, and a rear glass 28 is provided at a rear position.

  Steel materials are used for the intermediate frame 22, the rear frame 23, and the roof 24. The intermediate frame 22 is formed with a recess 22 </ b> A for allowing the weather strip 35 attached to the door 26 to enter the entire length or substantially the entire length of the front outer corner of the intermediate frame 22 and the rear outer corner of the intermediate frame 22. Alternatively, the front and rear intermediate portions are formed in a cross-sectional shape that protrudes outward in a rectangular shape so as to form a recess 22A that allows the weather strip 35 attached to the side glass 27 to enter the entire length. In addition, the door hinge 32 of the door 26 is attached to the outer surface 22B of the projecting portion of the front and rear intermediate portion of the intermediate frame 22, and the outer surface 22B of the intermediate frame 22, the outer surface of the door 26, and the outer surface of the side glass 27 are substantially flush. It is configured as follows. The front glass 25, the pair of doors 26, the pair of side glasses 27, and the rear glass 28 are made of transparent glass plates. The door 26, the pair of side glasses 27, and the rear glass 28 may be partially colored, and a transparent resin may be used. The side glass 27 is an example of the window plate material of the present invention. As the side glass 27, a resin plate may be used as described above, or a transparent glass or transparent resin fitted into an opaque frame may be used.

  The windshield 25 is disposed in a region extending from both sides of the engine bonnet 3 to the upper part of the engine bonnet 3 with both sides supported by the left and right front frames 21. The door 26 is disposed between the front frame 21 and the intermediate frame 22, and includes a door handle 31 for opening / closing operation on the front side, and the rear side is swingable to the intermediate frame 22 by a door hinge 32. It is supported. As a result, the door 26 can be opened by operating the door handle 31 to pull the front side outward.

  The rear glass 28 is disposed between the left and right rear frames 23, and an upper position is supported on a lower surface side of the roof 24 by a hinge (not shown) so as to be swingable around an axial center in a lateral orientation. ing. Thereby, the opening operation in the form in which the lower end side is flipped up rearward and upward is possible.

  The side glass 27 is composed of a curved glass whose front side is straight and whose rear side is curved outwardly, and is disposed between the intermediate frame 22 and the rear frame 23 arranged in an inclined posture with the upper side positioned forward. As shown in FIG. 2, the rear end side of the rear frame 23 is supported by the window hinge 33 so as to be swingable around the opening / closing axis P in the vertical orientation. An open / close link mechanism L that artificially opens and closes the side glass 27 is provided inside the cabin C. A configuration including the window hinge 33 and the opening / closing link mechanism L is referred to as a window opening / closing unit, and details of the opening / closing link mechanism L will be described below. The side glass 27 is not limited to the above-described curved rear part, but may be curved as a whole, or may be curved only at the front side or the front / rear intermediate part, and is not limited to curved glass. It may be flat glass.

  As shown in FIG. 2, the rear frame 23 is formed into a pipe shape, and a hinge shaft 33A is fixed to the inside of the opening / closing axis P and coaxial, and an opening is formed in the rear frame 23 on the front side of the hinge shaft 33A. 23A is formed. The base end side of the hinge bracket 33B is supported so as to be rotatable with respect to the hinge shaft 33A, the end of the hinge bracket 33B extending from the opening 23A, and the rear end side of the side glass 27 is connected to the hinge bolt 34 It is connected by.

  Thus, the hinge shaft 33A and the hinge bracket 33B constitute the window hinge 33 described above, and the side glass 27 can be opened in such a manner that the front end side swings outward of the vehicle body B. The outer peripheral portion of the side glass 27 is provided with a weather strip 35 made of rubber over the entire periphery, and when the side glass 27 is in the closed position, the weather strip 35 is in close contact with the intermediate frame 22, the rear frame 23, and the like. Prevents rainwater and outside air from entering. As shown in FIG. 2, a weather strip 35 is also provided on the outer peripheral portion of the rear glass 28.

  In particular, the configuration for supporting the rear end side of the side glass 27 is not limited to that shown in the figure, and the rear frame 23 may not have the cross-sectional shape shown in the figure, for example, a simple cross section such as a square pipe. It may be of a shape. In addition, when using a square pipe-shaped thing as the rear frame 23, it is good also as a structure which contacts the weather strip 35 of the side glass 27 with the front part of the outer surface of the rear frame 23, and it is good also as the structure which contacts the rear part of the outer surface of this rear frame 23. Alternatively, the weather strip 35 of the rear glass 28 may be brought into contact with the rear glass 28. Further, for example, the hinge shaft 33A may be supported on the outer surface of the rear frame 23, and the hinge bracket 33B may be supported with respect to the hinge shaft 33A.

  The intermediate frame 22 has a channel-like material in which the contact surface of the weather strip 35 of the side glass 27 and the contact surface of the weather strip 35 of the door 26 are formed stepwise by the recesses 22A and 22A. It is used in a posture to do. As described above, the intermediate frame 22 is made of steel, and a support frame 15 for connecting a frame bracket 43 described later is connected to the outer surface of the intermediate frame 22 by a technique such as welding in a backward projecting posture. A plurality of arch-shaped connecting pieces 16 connected to the inner wall surface at the front and rear positions by welding or the like are fixed to the open portion of the intermediate frame 22. The plurality of connecting pieces 16 are fixed to the intermediate frame 22 at predetermined intervals in the vertical direction, and a resin cover body 17 is attached to the connecting pieces 16 from the inside of the cabin by screws or the like. It has been. With such a configuration, the open portion of the intermediate frame 22 can be closed by the cover body 17, and when the cover body 17 is separated, the electrical wiring can be disposed in the internal space of the intermediate frame 22, and the electrical wiring is disposed. In this case, the maintenance of the electric wiring can be easily performed by separating the cover body 17.

[Open / close link mechanism]
As shown in FIGS. 2 to 7, the opening / closing link mechanism L includes a first swing link L <b> 1 and a second swing link L <b> 2 that are connected to be able to be bent around the spindle axis X. The end of the first swing link L1 opposite to the main axis X is supported so as to be swingable around the first axis Y1 in a posture parallel to the main axis X with respect to the intermediate frame 22, and the second swing link L2 The end opposite to the main axis X is supported so as to be swingable around a second axis Y2 parallel to the main axis X with respect to the side glass 27 (an example of a window plate material).

  The side glass 27 is configured to be freely opened and closed in a region between the closing posture Fc and the opening limit posture Fe shown in FIG. The open / close link mechanism L includes a detent-type holding mechanism K that applies a holding force to hold the side glass 27 in the closing posture Fc, the opening limit posture Fe, and the intermediate swinging posture Fm shown in FIG. Is provided with an auxiliary holding mechanism M for applying a holding force for holding the motor in the intermediate swinging posture Fm. The holding mechanism K and the auxiliary holding mechanism M will be described later.

  In particular, when the side glass 27 is in the closed posture Fc, the first swing link L1 and the second swing link L2 reach a posture in which the first swing link L1 and the second swing link L2 are folded as shown in FIG. 3, and the opening / closing link mechanism L functions as a buckle. Thus, the side glass 27 is maintained in the closed posture Fc. Specifically, in a state in which the side glass 27 is in the closed posture Fc, the main axis X is displaced to the outside of the vehicle body beyond a virtual limit line that linearly connects the first axis Y1 and the second axis Y2 in plan view. In order to reach a stable state, even if a force for displacing the front end of the side glass 27 is applied, a closing posture Fc is maintained without applying a force for displacing the main shaft core X outwardly of the vehicle body.

  The first rocking link L1 and the second rocking link L2 are connected to the main axis X and the main connecting shaft 36 disposed on the same axis so as to be foldable (swingable). Further, the frame bracket 43 and the first swing link L1 connected to the support frame 15 of the intermediate frame 22 by the fixing bolt 44 are swung by the first support shaft 41 disposed on the same axis as the first shaft core Y1. It is connected freely. In addition, the glass bracket 45 connected to the side glass 27 by the connecting bolt 46 and the second swing link L2 are swingably connected by the second support shaft 42 disposed on the same axis as the second axis Y2. Has been. The first support shaft 41 and the second support shaft 42 are constituted by spring pins.

  As the main connecting shaft 36, a shaft having a dimension sufficiently longer than the thickness in the direction along the main axis X of the opening / closing link mechanism L in the connected state is used, and the lower end side of the main connecting shaft 36 is connected to the lower side of the opening / closing link mechanism L. Protruding. From such a structure, the operator can operate the protruding portion of the main coupling shaft 36 as a handle to open and close the side glass 27.

[Opening / closing link mechanism: first swing link]
The first swing link L1 includes a plate-like first link main body 51, a rib-like portion 52 on its side, a connecting portion 53 on one end (end on the main axis side), and the other end. The boss portion 54 and the stopper portion 55 on the other end side are integrally formed of resin.

  The connecting portion 53 is configured as a block portion, and is formed in a disk shape centering on the main shaft core X so as to protrude from both surfaces of the first link body 51. The connecting portion 53 has a coaxial core and a coaxial core. A first through hole H1 is formed. The connecting portion 53 is formed with two main intermediate surfaces 53S that are orthogonal to the main axis X, and the two main intermediate surfaces 53S have an imaginary straight line that passes through the main axis X in the diameter direction and the main axis X. Two recesses 56 are formed at a position that is an intersection with the virtual circumference centered on the center, and two auxiliary recesses 57 are further formed on the virtual circumference. The two auxiliary recesses 57 are formed at the intersections between the auxiliary virtual straight line passing through the main axis X in the diameter direction and the virtual circumference.

  The boss portion 54 is formed to protrude from both surfaces of the first link main body 51, and a frame side through hole Hf coaxial with the first axis Y1 is formed therein. Stopper portions 55 are formed on both surfaces of the first link body 51 so as to protrude from positions close to the boss portions 54.

[Open / close link mechanism: second swing link]
In the second swing link L2, the second link body 61, a pair of projecting pieces 62 formed in a parallel posture and configured as a fork portion, and a connection support portion 63 formed at the end portion are integrally formed of resin. Is formed.

  The second swing link L2 is formed in a “U” shape in cross section by the second link main body 61 and the pair of projecting pieces 62, and one end of the pair of projecting pieces 62 (the end on the main axis side). Part) is formed with a second through hole H2 coaxial with the main axis X. The connection support part 63 described above is formed at the other end of the second link body 61, and the connection support part 63 is formed with a bracket side through hole Hb coaxial with the second axis Y2. The pair of projecting pieces 62 may be operated by being picked by a driver with a fingertip, and therefore, an uneven surface for preventing slipping is formed on the surface.

  Of the opposing surfaces of the pair of projecting pieces 62, a sub-intermediate surface 62S in a posture orthogonal to the main shaft core X is formed in a portion close to the main shaft core X. The diameter of the main shaft core X is changed between these two sub-intermediate surfaces 62S. Two convex portions 64 are formed at the intersection of a virtual straight line passing in the direction and a virtual circumference centered on the main axis X.

[Opening and closing link mechanism: Connection by main connecting shaft]
In a state where the first swing link L1 and the second swing link L2 are connected by the main connecting shaft 36, the pair of main intermediate surfaces 53S of the first swing link L1 is connected to the pair of sub-links of the second swing link L2. The positional relationship is such that the intermediate surface 62S is sandwiched. When the side glass 27 is in the intermediate swinging posture Fm in this connected state, two concave portions 56 (four concave portions 56 in total) formed on the two main intermediate surfaces 53S of the connecting portion 53 of the first link body 51, The two convex portions 64 (a total of four convex portions 64) formed on the sub-intermediate surface 62S of the pair of projecting pieces 62 of the second link main body 61 reach a state of being elastically engaged and exert a holding force. . As described above, the holding mechanism K is configured by the two concave portions 56 (total four concave portions 56) and the two convex portions 64 (total four convex portions 64).

  Further, when the side glass 27 reaches the closed posture Fc and the open limit posture Fe, two auxiliary recesses 57 (two auxiliary recesses 57 in total) formed on the two main intermediate surfaces 53S are provided. The convex portions 64 (a total of four convex portions 64) are elastically engaged.

  In addition, an engaged portion 59 having a concave shape is formed on the outer peripheral surface orthogonal to the main axis X at the end on the main axis side of the first link main body 51, and the main axis at the end on the main axis side of the second link main body 61. A convex engaging portion 65 is formed on the outer peripheral surface orthogonal to the core X, and the engaged portion 59 and the engaging portion 65 constitute an auxiliary holding mechanism M. In a state where the first swing link L1 and the second swing link L2 are connected by the main connecting shaft 36, the engaging portion 65 is located at a position close to the outer periphery of the end portion of the first link main body 51 on the main shaft core side. When the side glass 27 is in the intermediate swinging posture Fm, the state where the engaged portion 59 and the engaging portion 65 are elastically engaged is reached and the holding force is applied.

  A fixing hole 66 that reaches the through hole in a posture orthogonal to the main shaft core X is formed at a position near the main shaft core side of the pair of projecting pieces 62 constituting the fork portion in the second swing link L <b> 2. Correspondingly, the main connection shaft 36 is formed with a pair of connection holes 36A in a posture orthogonal to the axis.

  When assembling the opening / closing link mechanism L, the main coupling shaft 36 is inserted into the first through hole H1 of the first swing link L1 and the second through hole H2 of the second swing link L2, and a pair of A restriction pin 37 (an example of a restriction member) made of a spring pin is inserted through the fixing hole 66 of the protruding piece 62 and the connection hole 36A of the main connection shaft 36. Thereby, the main connecting shaft 36 is prevented from coming off, and at the same time, the displacement of the pair of protruding pieces 62 in the direction of expansion is restricted.

  In particular, since the regulation pin 37 is configured by a spring pin, even when an external force that elastically deforms the pair of projecting pieces 62 in the expansion direction may be applied in the coupled state by the main coupling shaft 36, the elasticity of the regulation pin 37. The deformation in the enlargement direction is well regulated by the dynamic restoring force. In this connected state, the end of the main connecting shaft 36 protrudes below the opening / closing link mechanism L. The main connecting shaft 36 may protrude above the opening / closing link mechanism L, or may protrude both upward and downward.

  Further, the first support shaft 41 formed of a spring pin is inserted through the frame side through hole Hf of the first swing link L1 and the through hole of the frame bracket 43 so as to be swingably connected. Similarly, the second support shaft 42 is inserted through the bracket side through hole Hb of the second swing link L2 and the through hole of the glass bracket 45 so as to be swingably connected.

  Thereafter, the frame bracket 43 is connected and fixed to the intermediate frame 22 with fixing bolts 44, and the glass bracket 45 is connected to the side glass 27 with connecting bolts 46, so that the opening / closing link mechanism L is interposed between the intermediate frame 22 and the side glasses 27. The side glass 27 can be opened and closed by operating the opening and closing link mechanism L.

[Operating form]
With this configuration, when the side glass 27 is in the closed posture Fc as shown in FIG. 3, the first swing link L1 and the second swing link L2 are folded and function as a buckle. The mechanism L holds the side glass 27 in the closed posture Fc. Further, since the total four convex portions 64 of the sub intermediate surface 62S are elastically engaged with the total of four auxiliary concave portions 57 of the main intermediate surface 53S, the side glass 27 is closed by the holding force due to the engagement. Retained. In the state where the side glass 27 is in the closing posture Fc, the first link main body 51 of the first swing link L1 is in a state of entering the space between the pair of projecting pieces 62 of the second swing link L2. They will overlap each other in view.

  Next, when the driver operates the handle portion at the lower end of the main coupling shaft 36 or the second swing link L2 in the opening direction, the side glass 27 reaches the intermediate swing posture Fm. In this intermediate swinging posture Fm, a total of four convex portions 64 are simultaneously elastically engaged with a total of four concave portions 56 that constitute the holding mechanism K, and at the same time, an engaged state that constitutes the auxiliary holding mechanism M. Since the engaging portion 65 is elastically engaged with the portion 59, the opening / closing link mechanism L holds the side glass 27 in the intermediate swinging posture Fm.

  Since the convex portion 64 is integrally formed with the projecting piece 62 of the second swing link L2, when engaging with the concave portion 56, the material (resin material) of the projecting piece 62 is made. The engaged state is reached by displacement in the direction along the main axis X due to the elastic force.

  Next, when the driver further operates the handle portion at the lower end of the main coupling shaft 36 and the second swing link L2 in the opening direction, the side glass 27 reaches the opening limit posture Fe. In this open limit posture Fe, the limit in the open direction is determined by the stopper portion 55 of the first swing link L1 coming into contact with the end of the frame bracket 43. At the same time, a total of four convex portions 64 of the sub intermediate surface 62S are elastically engaged with a total of four auxiliary concave portions 57 of the main intermediate surface 53S. It is held in the posture Fe.

  Further, in the window opening / closing unit, two convex portions 64 are arranged at positions facing each other across the main axis X with a virtual line passing through the main axis X in the diameter direction, and an auxiliary virtual line passing through the main axis X in the diameter direction. Thus, two auxiliary recesses 57 are arranged at positions sandwiching the spindle axis X. Therefore, when the side glass 27 is operated from the closed posture Fc to the open limit posture Fe, the first swing link L1 and the second swing link L2 are relatively rotated by 180 degrees around the spindle axis X. The virtual straight line on which the two convex portions 64 are arranged and the auxiliary virtual line on which the two auxiliary concave portions 57 are arranged rotate relatively by 180 degrees. For these reasons, when the operation is performed between the closing posture Fc and the opening limit posture Fe, the two auxiliary concave portions 57 with which the two convex portions 64 are engaged rotate relative to each other about the main axis X. Even if the two auxiliary recesses 57 are not independent of each other in correspondence with the closing posture Fc and the opening limit posture Fe, the closing posture Fc and the opening limit posture Fe can be used together. And retention is realized.

  In this operation mode, the engagement / disengagement when the side glass 27 is operated from the closed position Fc to the open limit position Fe has been described, but when the side glass 27 is operated in the direction from the open limit position Fe to the closed position Fc, the side glass 27 Are in the open limit posture Fe, the intermediate swinging posture Fm, and the closing posture Fc, the posture of the side glass 27 is maintained by the holding mechanism K and the auxiliary holding mechanism M.

  As described above, since the holding mechanism K is provided in the vicinity of the main spindle X so as to hold the bending angle between the first swing link L1 and the second swing link L2 constituting the opening / closing link mechanism L, for example, side glass The swinging posture can be maintained without a structure that resists a large torque as in the case where the holding mechanism K is provided in the vicinity of the 27 open / close shaft P. In this holding mechanism K, a click feeling can be felt when the convex portion 64 is engaged with the concave portion 56, so that it is possible to grasp from the touch of the fingertip that the intermediate swinging posture Fm has been reached. Similarly, when the side glass 27 reaches the closing posture Fc or when the side glass 27 reaches the opening limit posture Fe, it is possible to sense the click feeling and grasp the swinging posture of the side glass 27.

  Further, when the side glass 27 is in the intermediate swinging posture Fm, the auxiliary holding mechanism M reaches the engaged state and causes the holding force to be applied, so that the holding force of the holding mechanism K is increased in addition to the holding force of the holding mechanism K. The side glass 27 can be strongly held in the intermediate swinging posture Fm.

  In particular, since the restriction pin 37 connected to the main connection shaft 36 is formed of a spring pin, even when the pair of protruding pieces 62 are displaced in the direction in which the interval is increased, this displacement is caused by the elastic force of the restriction pin 37. Even when used for a long period of time, the distance between the pair of projecting pieces 62 constituting the fork portion does not increase, and the inconvenience that the engagement force is reduced is suppressed.

[Another embodiment]
The present invention may be configured as follows in addition to the embodiment described above.

(A) As shown in FIG. 8, the 2nd link 75 which comprises the 2nd rocking | fluctuation link L2 so that the edge part by the side of the main shaft center of the 1st link 70 which comprises the 1st rocking | fluctuation link L1 may be inserted | pinched from the upper and lower sides. The cross-sectional shape is formed in a “U” shape. A concave portion 71 is formed on the main intermediate surface 70S of the first link 70, and a convex portion 77 is formed on the sub intermediate surface 76S of the holding member 76 that rotates integrally with the second link 75. A main coupling shaft 36 that is coaxial with the main shaft core X and is disposed through the first link 70, the second link 75, and the holding member 76 is provided. The main intermediate surface 70S of the first link 70 and the holding member A plurality of disc springs 78 (an example of urging means) that exerts an urging force in a direction in which the sub intermediate surface 76S of 76 is pressed against the main connecting shaft 36 are externally fitted to the holding member 76 and the second link 75. It is arranged between. Accordingly, the holding mechanism K is configured by the concave portion 71 and the convex portion 77.

  A bolt is used as the main connecting shaft 36, and a nut 36N is screwed into the threaded portion. Between the nut 36N and a lower disc spring 78 (an example of biasing means), a second link 75 is connected. A bushing 79 having a penetrating structure is provided. From such a configuration, the urging force acting between the plurality of disc springs 78 and the main intermediate surface 70S of the first link 70 and the sub intermediate surface 76S of the holding member 76 can be arbitrarily set by operating the nut 36N. Therefore, for example, even when the holding force due to engagement decreases due to wear of the convex portion 77, the holding force of the holding mechanism K (the concave portion 71 and the convex portion 77) is set to a required value by increasing the biasing force. It is also possible.

(B) As shown in FIG. 9, this another embodiment (b) has a configuration that is basically the same as that of the above-described another embodiment (a) (the same number / symbol is used for the common number / symbol). In that the disc spring 78 is disposed only on the lower side of the first link 70. Also in this other embodiment (b), a plurality of disc springs 78 for applying a biasing force in a direction in which the main intermediate surface 70S of the first link 70 and the sub intermediate surface 76S of the holding member 76 are pressed against each other are provided on the main coupling shaft 36. The holding mechanism K is constituted by the concave portion 71 and the convex portion 77.

  From such a configuration, the urging force acting between the plurality of disc springs 78 from the main intermediate surface 70S of the first link 70 and the sub intermediate surface 76S of the holding member 76 can be arbitrarily set by operating the nut 36N. It is also possible to set the holding force of the holding mechanism K (the concave portion 71 and the convex portion 77) to a required value.

(C) The holding mechanism K may be configured by forming the convex portions 64 and 77 on the main intermediate surfaces 53S and 70S and forming the concave portions 56 and 71 on the sub intermediate surfaces 62S and 76S. Further, as the holding mechanism K, the convex portions 64 and 77 are constituted by balls or rods that are projected and urged in the direction along the main axis X by the urging force of the spring, or the convex portions 64 and 77 are made of a spring plate material. It may be configured. In particular, the number of the concave portions 56 and 71 and the convex portions 64 and 77 constituting the holding mechanism K may be one or a large number.

(D) The holding mechanism K is configured such that each swinging posture can be maintained in a state where the side glass 27 is in a plurality of intermediate swinging postures Fm in a swinging region between the closing posture Fc and the opening limit posture Fe. You may do it. Even in such a configuration, a plurality of convex portions 64 and 77 may be formed on the sub intermediate surfaces 62S and 76S.

(E) Although the example in which the open / close link mechanism L is provided in the upper and lower intermediate portions of the side glass 27 is shown, the open / close link mechanism L may be provided in the upper part or the lower part of the side glass 27, and a plurality of open / close link mechanisms L You may provide in multiple places. Further, the opening / closing link mechanism L may be provided on the rear side of the side glass 27 by swinging and opening with the front side of the side glass 27 as a fulcrum.

  The present invention can be used not only for the side glass but also for opening / closing other window plate materials of the cabin as a mechanism for setting the attitude of the window plate material that can be freely opened / closed with respect to the cabin. It can be used for all vehicles including

22 frames (intermediate frame)
27 Window plate material (side glass)
36 Main coupling shaft 37 Restriction member (regulation pin)
43 First bracket (frame bracket)
45 Second bracket (glass bracket)
53 Block part 53S, 70S Intermediate surface (main intermediate surface)
56, 71 Recessed portion 57 Auxiliary recessed portion 59 Engaged portion 62 Fork portion 62S, 76S Intermediate surface (sub intermediate surface)
64, 77 Convex part 65 Engagement part 78 Energizing means (disc spring)
C Cabin Fc Closed posture Fe Open limit posture Fm Intermediate swing posture K Holding mechanism L Opening / closing link mechanism L1 First swing link L2 Second swing link X Main shaft core Y1 First shaft core Y2 Second shaft core

Claims (8)

A vehicle window opening / closing unit provided with an opening / closing link mechanism for setting a swinging posture of a window plate material supported to be freely swingable openable / closable in a cabin,
A first bracket connected to the rear end of the cabin frame and extending rearward;
A second bracket connected to the front-rear midway part of the window plate material and extending from the lateral side of the vehicle body toward the lateral side of the vehicle body,
The open / close link mechanism has a first swing link and a second swing link that are foldably connected around a spindle axis, and an end portion of the first swing link opposite to the spindle axis is provided . the first axis about the relative pre-notated frame the spindle core parallel orientation, the rocking freely connected and supported to the rear end portion of the first bracket, a side opposite to the main axis core of the second oscillating link of the end portion, the second axis around the window plate with respect to the spindle core parallel orientation, wherein by the second swingably connected to and supported on the vehicle body Yokouchi end of the bracket, in the spindle core around A swing opening / closing posture of the window plate material is determined by setting a bending angle between the first swing link and the second swing link;
A holding mechanism that holds the bending angle in a state in which the window plate material is in an intermediate swinging posture that is intermediate between a closing posture and an opening limit posture;
The holding mechanism is formed at one end of two intermediate surfaces provided in an end portion of the first swing link and the second swing link on the side of the main shaft core, which is orthogonal to the main shaft core and is opposed to each other. A concave portion and a convex portion formed on the other, and disposed in a positional relationship in which the concave portion and the convex portion are elastically engaged in the intermediate swinging posture ;
A window opening / closing unit for a vehicle , wherein the first bracket and the second bracket are located on the laterally outer side of the vehicle body from the laterally inner end of the frame in a state where the window plate material is in the closed position . 2. The vehicle window opening / closing unit according to claim 1 , wherein the first axis and the second axis are located close to each other when the window plate is in the closed position . The holding mechanism has two convex portions formed at intersections of a virtual straight line passing through the main axis in the diameter direction on the one intermediate surface and a virtual circumference centered on the main axis, and the first The rocking link and the second rocking link are configured to include two concave portions formed on the other intermediate surface so that the two convex portions are engaged when the rocking link and the second rocking link are in the intermediate rocking posture. The vehicle window opening / closing unit according to claim 1 or 2 . A difference in bending angle between the first swing link and the second swing link in the state in which the window plate material is in the closed posture and the open limit posture is set to 180 degrees;
4. The vehicle window according to claim 3, wherein two auxiliary concave portions into which the two convex portions engage are formed on the other intermediate surface in a state where the window plate material is in the closed posture and the open limit posture. Opening / closing unit. A block portion having two main intermediate surfaces as the intermediate surface is formed at an end of one of the first swing link and the second swing link on the side of the main axis, and the first swing link and the second swing link are formed. A fork portion having a shape that sandwiches the block portion with two sub-intermediate surfaces arranged opposite to the main intermediate surface as the intermediate surface is formed on the other side of the moving link,
A main connecting shaft that is disposed coaxially with the main shaft core and passes through the block portion and the fork portion is provided, and a restricting member that restricts displacement in the direction in which the interval between the fork portions is enlarged is the main connecting shaft and the fork. The window opening / closing unit for a vehicle according to any one of claims 1 to 4 , wherein the window opening / closing unit is formed between the vehicle and the vehicle. The vehicle window opening / closing unit according to claim 5, wherein the main connection shaft is used as a handle for artificial operation by causing the main connection shaft to protrude from the opening / closing link mechanism. Wherein a biasing force in the direction along the main shaft core into engagement direction, any one of claim 1 to 6, the urging means can be arbitrarily set is provided by the manual operation with the recess and the protrusion The vehicle window opening and closing unit described in 1. An engaged portion that is concave in a direction orthogonal to the main spindle is formed on one of the ends of the first swing link and the second swing link on the main spindle side, and the other is orthogonal to the main spindle. An engagement portion that is convex in the direction is formed, and the relative position is such that the engaged portion and the engagement portion engage with each other when the window plate is in the intermediate swinging posture. The window opening / closing unit for a vehicle according to any one of claims 1 to 7, wherein a relationship is set.

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