KR20070119001A - Slide rail unit with holding function - Google Patents

Abstract

A slide rail unit with a holding function enabling the automatic drawing of a second rail (2) to an end position when the second rail is stored in a first rail (1) and enabling the holding of its state and easily manufacturable with less number of parts at low cost. The slide rail unit comprises a holding pin (30) vertically installed on the first rail (1) movably in the longitudinal and lateral directions thereof, an elastic member (31) energizing the holding pin (30) to the stroke end of the second rail (2), a pin guide member (32) installed on the first rail (1), locking the holding pin (30) at a wait position apart from the stroke end against the energizing force of the elastic member (31), and guiding the holding pin (30) disengaged from the wait position to the stroke end according to the energization by the energizing force, and a cam member (33) installed on the second rail (2) and disengaging the holding pin (30) from the wait position on the pin guide member (32) as the cam member is overlapped with the pin guide member (32) and locking the holding pin at the stroke end.

Description

SLIDE RAIL UNIT WITH HOLDING FUNCTION}

The present invention is provided between a pair of members that reciprocate relatively in a predetermined direction, such as a drawer in furniture and a paper tray in a copying machine, for example, and slides that support the relative movement of these members. It relates to a rail unit, and more particularly, to a slide rail unit capable of pressing the movable member toward the end end direction at the end of the stroke of such a forward and backward movement and holding it at the end position.

Background Art Conventionally, slide rail units including an outer rail and an inner rail are known as guide members for supporting the forward and backward movement of movable members such as drawers in furniture and system kitchens (Japanese Patent Application Laid-Open No. 11-201158). . Specifically, an outer rail formed by bending a pair of ball rolling running portions along the longitudinal direction and formed into a channel shape, and an inner rail formed smaller than that of the outer rail, and still formed by bending a pair of ball rolling running portions formed into a channel shape. And a plurality of balls rolling on the inside of these outer rail ball rolling portions and the outside of the ball rolling running portions of the inner rail, and retainers for aligning the balls at predetermined intervals between the outer rail and the inner rail. For example, it is used by fixing the outer rail to the furniture body and the inner rail to both sides of the drawer.

Since the inner rail is fitted to the inside of the outer rail through the ball, it is possible to freely take out this inner rail from the inside of the outer rail, and with the withdrawal of the inner rail, the ball moves together with the retainer in the outer rail. It is supposed to move. As a result, it is possible to withdraw the drawing freely from the furniture main body or to draw the drawing into the furniture main body.

In addition, this slide rail unit eliminates the half-open state of the closed drawer and solves the problem of the drawer being opened by an earthquake or the like. Therefore, when the inner rail is stored to some extent in the outer rail, A pressing force to be drawn into the outer rail acts, and a type of drawing the inner rail into the outer rail and holding the same by the pressing force has also been proposed. -206489, Japanese Patent Application Laid-Open No. 2004-344188.

In the slide rail unit disclosed in Japanese Patent Application Laid-open No. Hei 6-245830, the roller provided on the inner rail side rolls over the outer rail, whereby the inner rail can freely move along the outer rail. When the rail is pulled into the outer rail, the roller is configured to ride over the plate elastic body provided on the outer rail side, and the roller is pressed by the plate elastic body in the direction in which the inner rail is drawn. Moreover, unless the roller rides over the plate elastic body in the reverse direction, the inner rail cannot be pulled out to the outer rail, and light locking force acts on the direction in which the inner rail is pulled out from the outer rail.

In addition, in the slide rail unit disclosed in Japanese Patent Application Laid-open No. Hei 11-206489, a restrictor made of a plate elastic body is disposed in the outer rail so as to be rotatable and pressed in a predetermined posture, while the inner rail has the above-mentioned. The engaging shaft fixed to the regulator is standing up fixedly. When the inner rail is pressed into the outer rail, the engagement shaft presses the regulator, and initially the pressing member exerts a pressing force in the direction in which the regulator presses the inner rail to return it. It rotates over the dead point, and then the regulator exerts a pressing force in the direction of introducing the inner rail into the outer rail. In addition, when the inner rail is pulled out from the outer rail, the regulator must rotate over the dead point again. Thereby, light locking force acts on the direction which draws out an inner rail from an outer rail.

Moreover, in the slide rail unit disclosed by Unexamined-Japanese-Patent No. 2004-344188, the guide case of the wheel part pressurized by the spring with respect to the outer rail is provided, and it is internal with respect to the wheel part which slides in this case. It is comprised so that an inner rail may be pulled in with respect to an outer rail by holding or pinning the pin which was standing up on the rail side, and holding the drawn inner rail in an outer rail. Since the wheel part is engaged or disengaged from the pin of the inner rail side, the wheel part is formed into a predetermined shape by synthetic resin to impart elasticity, and elastically deforms in the case to allow the pin to be engaged and disengaged. Doing.

Patent Document 1: Japanese Patent Application Laid-Open No. 11-201158

Patent Document 2: Japanese Patent Application Laid-open No. Hei 6-245830

Patent Document 3: Japanese Patent Application Laid-open No. Hei 11-206489

Patent Document 4: Japanese Patent Application Laid-Open No. 2004-344188

However, in the slide rail unit disclosed in Japanese Patent Application Laid-open No. Hei 6-245830 and Japanese Patent Application Laid-open No. Hei 11-206489, when the inner rail is accommodated in the outer rail, the pressing force of the plate elastic body is opposed from the front. There is a problem that the inner rail needs to be drawn into the outer rail, for example, a large pressing force is required when pressing the drawer against the furniture main body. In addition, in pressurizing the inner rail using the plate elastic body, there is a problem in that the distance at which the pressing force acts cannot be set long, and the pressing force acts suddenly at a short distance, resulting in deterioration of the feeling when opening and closing the drawer. .

In addition, in the slide unit disclosed in Japanese Patent Application Laid-Open No. 2004-344188, a wheel part made of synthetic resin, a case for guiding it, and the like are required, and besides requiring labor for assembly, production costs are increased. There was a problem such as getting high. In addition, since the wheel parts allow engagement or detachment of the pins on the inner rail side by elastic deformation, the selection of materials is limited, and there is a problem such that the production cost also increases in this regard.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to automatically introduce the inner rail into the outer rail and maintain the drawn state without applying a large pressing force when the inner rail is stored in the outer rail. It is possible to provide a slide rail unit with a retaining function which is possible, and which can be produced in a simple and low cost with a small number of parts.

That is, the slide rail unit of the present invention has a first rail, a second rail that can be stroked along the longitudinal direction of the first rail, and the second rail toward the stroke end portion in the vicinity of the stroke end portion of the second rail. It is comprised by the terminal part pressurizing means to pressurize. When this end part pressurizing means pulls in a 2nd rail to a 1st rail, for example, it presses a 2nd rail toward a stroke end part in the vicinity of the end part of the movement stroke, and assists the drawing of a 2nd rail. At the same time, it exhibits a holding force which keeps drawing in to the end part. As a result, in a drawer of a furniture supported by the slide rail unit or the like, such a drawer may be half-closed by a reaction at the time of closing, or may be unintentionally opened by an earthquake. It is supposed to be.

The terminal end pressing means includes a retaining pin that is erected to be movable in the longitudinal direction and the width direction with respect to the first rail, an elastic member that always presses the retaining pin toward the stroke end of the second rail, and the first A pin mounted to the rail and resisting the pressing force of the elastic member to hold the retaining pin at a standby position away from the stroke end portion, and guiding the retaining pin deviated from the standby position toward the stroke terminal portion with the pressing force. It consists of an induction member and the cam member which is provided in the said 2nd rail, and withdraw | separates the said holding pin from the standby position of a pin guide member as it overlaps with the said pin guide member, and hold | maintains the holding pin after removal.

The retaining pin is attached to the first rail and held at the standby position of the pin guide member in the state where the elastic member is extended, and the pressing force of the elastic member is always acting. Therefore, when it moves away from a standby position, it moves to the stroke end part of a 2nd rail by the pressing force of the said elastic member. On the other hand, as the cam member provided in the second rail overlaps with the pin guide member on the first rail side, the cam member acts to release the retaining pin from the standby position and latches the retaining pin after the detachment.

For this reason, when a 2nd rail strokes with respect to a 1st rail, and a cam member gradually piles up with respect to the said pin guide member, the holding pin will be disengaged from the standby position of a pin guide member, and will be caught by the cam member and the pressing force of the said elastic member As a result, the second rail is stretched toward the stroke end portion. Thereby, it becomes possible to automatically retract a 2nd rail with respect to a 1st rail, and to maintain the retracted state.

At this time, since the holding pin set at the standby position is only changed by the cam member, the holding pin is released from the standby position, and thus the pressing force that resists the pressing force of the elastic member with respect to the second rail is released. It is not necessary to provide the shape, and the second rail can be automatically drawn in with respect to the first rail by simply moving the second rail lightly. Further, as the cam member, it is sufficient to form a cam groove acting on the retaining pin in the second rail, and it is possible to produce it easily and at low cost with a small number of parts.

1 is a perspective view showing a first embodiment of a slide rail unit of the present invention.

Fig. 2 is a plan view showing a state in which the slide rail unit shown in Fig. 1 is applied to a slide mechanism of a drawer.

3 is a front sectional view of the slide rail unit shown in FIG.

4A is a plan view showing the relationship between the retaining pin, the pin guide member and the cam member.

FIG. 4B is an arrow B diagram of FIG. 4A.

FIG. 4C is a C arrow diagram of FIG. 4B.

5 is an exploded perspective view showing the relationship between the retaining pin, the pin guide member and the elastic member.

Fig. 6 is a front sectional view showing a state where a retaining pin is inserted into a guide groove formed in the inner rail.

FIG. 7 is an explanatory diagram showing, in order, the movement of the retaining pin when the inner rail is pulled into the outer rail; FIG.

Fig. 8 is an explanatory diagram showing the movement of the retaining pin in the order of returning the retaining pin to the standby position.

9 is a plan view showing another example of the cam member.

FIG. 10 is an explanatory diagram showing, in order, the movement of the retaining pin when returning the retaining pin to the standby position using the cam member shown in FIG.

Fig. 11 is a perspective view showing a second embodiment of the slide rail unit of the present invention.

12 is a perspective view showing an example in which the slide rail unit of the present invention is applied to a sliding door.

[Description of the code]

1: outer rail

2: inner rail

3: ball

30: holding pin

31: elastic member

32: pin induction member

33: cam member

60: induction groove

64: Guide Home

EMBODIMENT OF THE INVENTION Hereinafter, the slide rail unit of this invention is demonstrated in detail using attached drawing.

1 shows one embodiment of a slide rail unit to which the present invention is applied. The slide rail unit serves as a rolling element that rolls between the outer rail 1, the inner rail 2 accommodated in the outer rail 1, and the outer rail 1 and the inner rail 2; It consists of the retainer 4 which arrange | positions many balls 3 at predetermined space | interval between the ball 3 and the outer rail 1 and the inner rail 2. As shown in FIG.

This slide rail unit is used as a slide mechanism of the drawer 51 with respect to the furniture main body 50, for example, as shown in FIG. 2, and the outer rail 1 is attached to the furniture main body 50, and the inner rail ( 2) is fixed to the drawer 51, and the drawer 51 can be smoothly withdrawn from the furniture main body 50. As shown in FIG.

The outer rail 1 is formed by precisely forming a steel sheet by a roll forming process, and by bending a pair of ball rolling running portions 12 and 12 along the longitudinal direction of the mounting portion 11, the channel is formed. It is formed in a shape. Moreover, the ball rolling running surface 13 of curvature approximating the spherical surface of the said ball 3 is formed in the inner surface of the said ball rolling running part 12. As shown in FIG.

On the other hand, the inner rail 2 is similarly formed of a steel plate, and is formed in a channel shape by bending a pair of ball rolling running portions 22 and 22 along the longitudinal direction of the mounting portion 21. However, since the inner rail 2 is accommodated between the ball rolling running parts 12 and 12 of the outer rail 1 and arrange | positions the ball 3 between the said outer rail 1, the outer rail 2 At the same time, the ball rolling running surface 23 is formed on the outer surface of the ball rolling running portion 22.

The mounting holes 11 and 21 of the respective rails 1 and 2 are provided with threaded holes 14 and 24 through which the mounting screws 5 pass, respectively. For example, as shown in FIG. (1) is fixed to the furniture main body 50 using the installation screw 5, and the inner rail 2 is fixed to the drawer 51 using the installation screw 5, respectively.

In addition, the retainer 4 is formed by pressing a steel sheet by molding or by injecting a synthetic resin into a mold, and as shown in FIG. 1, between the outer rail 1 and the inner rail 2. The plurality of balls 3 inserted into the rails 1 and 2 and rolling through these rails 1 and 2 are aligned at equal intervals to prevent the adjacent balls from contacting each other.

And in the slide rail unit comprised in this way, since the outer rail 1 and the inner rail 2 are fitted through the ball 3 as mentioned above, the said outer rail is moved by the rolling movement of such a ball 3. The inner rail 2 accommodated in (1) can be pulled out smoothly from the inside of the outer rail 1.

In this slide rail unit, the total length is configured to be the shortest in the state where the inner rail 2 is completely overlapped with the outer rail 1, that is, the inner rail 2 is fully retracted into the outer rail 1. For example, a state in which the drawer 51 described above is completely stored in the furniture main body 50 corresponds to this state. In such use, the slide rail unit assists the inlet of the inner rail 2 with respect to the outer rail 1 in order to securely store the drawer 51 in the furniture main body 50 and to maintain it. Mechanism 6 is provided. When the mechanism 6 pulls the inner rail 2 into the outer rail 1, the mechanism 6 acts slightly on the front side of the end position of the stroke of the inner rail 2, and the pressing force of the tension elastic body as the elastic member is applied. It is comprised so that the inner rail 2 may be drawn in in the outer rail 1 by using.

This auxiliary mechanism, that is, the terminal pressurizing means 6 in the present invention, has a retaining pin 30 provided to be movable with respect to the outer rail 1, and the retaining pin 30 is drawn into the inner rail 2. An elastic member 31 which is always pressed in the direction, a pin guide member 32 which is fixed to the outer rail 1 and moves the retaining pin 30 along a predetermined path, and the inner rail 2 And a cam member 33 for moving the retaining pin 30 according to the movement of the inner rail 2 at the same time as shown in FIG. have. And when the inner rail 2 is drawn in with respect to the outer rail 1, the cam member 33 provided in the inner rail 2 side will engage with the retaining pin 30 on the outer rail 1 side, and will be elastic Since the tensile force (pressing force) of the member 31 acts on the inner rail 2 via the retaining pin 30, the inner rail 2 can be fully drawn in with respect to the outer rail 1 by this pressing force. .

4A, 4B, and 4C show the relationship between the retaining pin 30, the pin guide member 32, and the cam member 33. FIG. 4B is an arrow B diagram of FIG. 4A, and FIG. 4C is a view. C arrow of 4b. In these drawings, the pin guide member 32 is made of synthetic resin, and has a front plate portion 32a, a pair of leg portions 32b and 32b protruding from both sides of the front plate portion 32a, It has the back plate part 32c which opposes the said front plate part 32a via these leg parts 32b, and the back plate part is being fixed to the outer rail 1. As shown in FIG. A space is formed between the front plate portion 32a and the back plate portion 32c, and this space serves as a movement space of the retaining pin 30. An induction groove 60 is formed in the front plate portion 32a to regulate the movement of the retention pin 30. The retention pin 30 has a tip end thereof inserted into the induction groove 60 to cam member 33. Projecting toward). On the other hand, the retaining pin 30 has a disk-shaped base portion 30a, and the base portion 30a is between the rear plate portion 32c and the front plate portion 32a of the pin guide member 32. Is fitted in. Therefore, the retaining pin 30 is freely movable with respect to the outer rail 1 in a state where the tip thereof protrudes from the guide groove 60, and when an external force acts on the tip portion, the guide groove 60 is in accordance with the direction. Move inside. On the other hand, the pin guide member 32 can be formed by bending a metal plate as shown in FIG. 5, in which case the back plate 32c is omitted, and the leg portion 32b as shown in FIG. ) Can be fixed directly to the outer rail (1).

In addition, one end of the tensile elastic body 31 as the elastic member is fixed to the base portion 30a of the retaining pin 30, and the other end of the tensile elastic body 31 is studs provided on the pin guide member 32. It is fixed at 32c. This stud 32c is located at the end side of the outer rail 1 with respect to the guide groove 60. Even when the retaining pin 30 is set at any position of the guide groove 60, the tensile elastic body 31 is in an extended state, and the pressing pin 30 of the tensile elastic body 31 is supplied to the retaining pin 30 by the outer rail 1. It always acts toward the end direction of (), ie, the pulling direction of the inner rail (2).

On the other hand, the guide groove 60 is a locking recess 61 for locking the retaining pin 30 against the pressing force of the tensile elastic body 31, and is continuously connected to the locking recess 61 and at the same time as the outer rail ( It has the tension guide part 62 formed along the longitudinal direction of 1). The locking recess 61 is a standby position at which the retaining pin 30 is set when the inner rail 2 is pulled out from the outer rail 1, and the retaining pin 30 is set at the locking recess 61. When it is, the tensile elastic body 31 is in the most extended state. Therefore, when the retaining pin 30 is extracted from the locking recess 61 which is a standby position by the action of the cam member 33 described later, the retaining pin 30 is tensioned by the pressing force of the tension elastic body 31. The guide portion 62 is moved at one time, and moves up to the end portion of the tension guide portion 62.

The end of the tension guide portion 62 close to the stud 32c is separated from the standby position (engagement recess 61) regardless of the movement of the cam member 33 on the inner rail 2 side. An evacuation recess 63 is used to reset the retaining pin 30 to the standby position. The evacuation recess 63 is formed to intersect the tension guide portion 62 at an angle. The detailed use method of this evacuation recessed part 63 is mentioned later.

Next, the cam member 33 provided on the inner rail 2 side will be described. The cam member 33 is formed by cutting the guide groove 64 in the metal plate, and is fixed to the inner side surface of the inner rail 2 so as to face the pin guide member 32 on the outer rail 1 side. The guide groove 64 is configured as a so-called cam groove that changes the set position of the retaining pin 30 in accordance with the movement of the inner rail 2 relative to the outer rail 1, and has a retaining pin ( An inlet 65 for receiving the tip of the tip 30, an acting portion 66 for moving the retaining pin 30 in the width direction of the outer rail 1 to disengage from the standby position; The pin holding part 67 which latches the holding pin 30 which passed through 66 is provided. The pin holding portion 67 faces the tension guide portion 62 of the pin guide member 32, and the retaining pin 30 moves the tensile guide portion 62 in the state held by the pin holding portion 67. It is possible to do.

As shown in Fig. 4C, the pin guide member 32 and the cam member 33 face each other between the outer rail 1 and the inner rail 2, and retain the protrusions from the pin guide member 32. The tip end of the pin 30 is inserted into the guide groove 64 of the cam member 33. However, since the cam member 33 only needs to have a guide groove 64 into which the tip end of the retaining pin 30 is inserted, the cam member 33 having the guide groove 64 is fixed to the inner rail 2. 1 and 6, the guide groove 64 is formed directly on the mounting portion 21 of the inner rail 2, and this forming portion is used as the cam member 33. As shown in FIG. It is possible enough.

7 (a) to 7 (f) show the operation of the retaining pin 30 when the inner rail 2 is pulled into the outer rail 1 over time. As shown in Fig. 7A, the inner rail 2 is pulled out from the outer rail 1, and the cam member 33 is completely separated from the guide groove 60 of the pin guide member 32. In the state, the retaining pin 30 is set in the standby position, that is, the locking recess 61 of the guide groove 60. In this state, although the tension force of the elastic member 31 acts on the retaining pin 30, the retaining pin 30 is drawn in and engaged with the locking recess 61, and is maintained at the standby position. . Here, when the inner rail 2 enters the outer rail 1 and the cam member 33 overlaps the guide groove 60 as shown in Fig. 7B, the retaining pin 30 is the inlet portion. When it pulls in from the guide groove 64 from 65, and the pull-in of the inner rail 1 advances as it is, it collides with the acting part 66 as shown in FIG.7 (c). Since the acting portion 66 is installed at an angle with respect to the moving direction of the inner rail, when the inlet of the inner rail proceeds as it is, the retaining pin 30 is moved in the moving direction of the inner rail as shown in FIG. It is biased in the direction orthogonal to the arrow direction in a figure, and it is separated from the locking recessed part (standby position) 61 of the guide groove 60. FIG. Further, in the guide groove 64 of the cam member 33, the retaining pin 30 passes through the acting portion 66 and enters the pin retaining portion 67, and the retaining pin 30 is the pin retaining portion 67. Is intercepted in

As described above, since the pin retaining portion 67 of the cam member 33 faces the tension guide portion 62 of the guide groove 60, the retaining pin 30 as shown in Fig. 7E. When it is set to the pin retaining portion 67 of the cam member 33, the retaining pin 30 is forced to push the inside of the tension guide portion 62 in the inlet direction of the inner rail 2 at one time by the pressing force of the elastic member 31. Will move. At this time, since the retaining pin 30 is locked to the pin retaining portion 67 of the cam member 33, the tensile pressing force of the elastic member 31 passes through the retaining pin 30 to the cam member 33. It acts on the inner rail 2 so that the inner rail 2 is automatically drawn into the outer rail 1. Thereby, as shown in FIG.7 (f), the inner rail 2 is led to the end position of stroke range, and is hold | maintained at the position by the pressing force of the elastic member 31. FIG.

Thus, in the slide rail unit of this invention, when this inner rail 2 reaches the vicinity of the terminal part of the stroke range, when the inner rail 2 is drawn in to the outer rail 1, it will be at the side of the inner rail 2 side. By the action of the cam member 33, the retaining pin 30 is released from the standby position, and the pressing force of the elastic member 31 acting on the retaining pin 30 acts at one time to move the inner rail 2 to the outer rail ( It is possible to draw in automatically in 1). In addition, since the pressing force of the elastic member 31 acts as a holding force in the retracted state, it is possible to prevent the inner rail 2 from unintentionally popping out of the outer rail 1, for example, to the guide mechanism of the drawer. When this slide rail unit is used, it becomes possible to eliminate such a half open state of the drawer.

On the other hand, when the inner rail 2 is pulled out from the outer rail 1, the retaining pins 30 are set in the standby position in the order completely opposite to those of Figs. 7A to 7F. That is, since the inner rail 2 is pulled out to the outer rail 1 in a state where the retaining pin 30 is locked to the pin retaining portion 67 of the cam member 33, the retaining pin 30 is the elastic member 31. The tension guide portion 62 is moved toward the locking recess 61 in response to the pressing force of. Since the guide groove 60 extending from the tension guide portion 62 to the locking recess 61 is formed at an angle with respect to the direction in which the inner rail 2 is pulled out, the inner rail 2 is again pulled out to the outer rail 1. This guide groove 60 acts on the retaining pin 30 as a cam groove on the lower surface, and the retaining pin 30 is set on the locking recess 61 biased in a direction orthogonal to the moving direction of the inner rail 2. At this time, the retaining pin 30 is extracted from the pin retaining portion 67 of the cam member 33 and reaches the introduction portion 65 via the acting portion 66 (state in FIG. 7C). . As a result, the retaining pin 30 can be taken out from the cam member 33, and the cam member 33 on the inner rail 2 side is separated from the pin guide member 32 on the outer rail 1 side. The inner rail 2 can be drawn out to the outer rail 1. In addition, the retaining pin 30 is set in the locking recess (standby position) 61 of the guide groove 60 in the state where the elastic member 31 is extended, and then the inner rail 2 is the outer rail 1. In the case of the drawing, it is possible to assist the drawing of the inner rail 2 in the order shown in Figs. 7A to 7F again.

As described above, in the state where the inner rail 2 is usually drawn out from the outer rail 1, the retaining pin 30 is set in the locking recess 61 of the guide groove 60, but the outer rail 1 The retaining pin 30 may be unintentionally ejected from the locking concave portion 61 due to an impact, or the like, in which case the retaining pin is tensioned as shown in Fig. 7A. The guide part 62 falls off to the terminal position. If the retaining pins 30 are inadvertently set at such a position, the retaining pins 30 may be impeded if the retaining pins 30 are not returned to the locking recesses 61, and the inner rails 2 It cannot become fully inserted into the rail 1. For this reason, in this slide rail unit, the mechanism which returns the holding pin 30 to the locking recessed part (standby position) 61 is provided.

Specifically, a tapered raised portion 68 is formed on the introduction portion 65 of the cam member 33, and the retaining pin 30 is formed between the raised portion 68 and the pin retaining portion 67. ), A temporary fixing concave portion 69 is formed temporarily. This temporary fixing concave portion 69 faces the tension guide portion 62 of the pin guide member 32 similarly to the pin indentation portion 67. That is, these are the pin recovery parts formed in the cam member 33. In addition, in the guide groove 60 of the pin guide member 32, the receding recess 63 continuous from the end of the tension guide portion 62 was formed as described above. This evacuation recess 63 corresponds to the introduction portion 65 of the cam member 33.

8 (a) to 8 (f) show a series of movements of the retaining pin 30 when returning the retaining pin 30 unintentionally released from the standby position to the standby position. . As shown in Fig. 8A, in the state where the retaining pin 30 is separated from the standby position and is present in the tension guide portion 62 in the state where the inner rail 2 is pulled out from the outer rail 1; By retracting the inner rail 2 into the outer rail 1 once and pulling out the inner rail 2 to the outer rail 1 again, it is possible to reset the retaining pins 30 to the standby position. As shown in Figs. 8A and 8B, the inner rail 2 is drawn in with respect to the outer rail 1, and the cam member 33 guides the induction grooves on the outer rail 1 side. When it is overlapped with 60, the retaining pin 30 is biased in the direction orthogonal to the pulling direction of the inner rail 2 by the raised portion 68 of the cam member 33, so as to evacuate the guide groove 60 as it is. It enters into the recessed part 63 (refer FIG. 8 (c)). Since the retreat recess 63 is formed at an angle with respect to the retracting direction of the inner rail 2, the retaining pins 30 are elastic members 31 even when they are biased by the raised portion 68 of the cam member 33. Is trying to return to the tension guide part 62 of the guide groove 60 by the tension force of (). For this reason, when the pulling-in of the inner rail 2 further advances and the holding pin 30 passes through the said raising part 68 as shown in FIG.8 (c), this holding pin 30 will It enters into the temporary fixation recessed part 69 provided in the cam member 33, and is latched by the cam member 33 in this position (refer FIG. 8 (d)).

Since the temporary fixing concave portion 69 faces the tension guide portion 62 of the guide groove 60, the retaining pin 30 is locked to the temporary fixing concave portion 69 of the cam member 33. When the inner rail 2 is pulled out again in the state, the retaining pin 30 moves the tension guide portion 62 toward the locking recess 61 in response to the pressing force of the elastic member 31 (Fig. e). Since the guide groove 60 extending from the tension guide portion 62 to the locking recess 61 is formed at an angle with respect to the direction in which the inner rail 2 is pulled out, the inner rail 2 is again pulled out to the outer rail 1. When the guide groove 60 acts on the retaining pin 30 as a cam groove, the retaining pin 30 is set in the locking recess 61 biased in a direction orthogonal to the moving direction of the inner rail 2. At this time, the retaining pins 30 are extracted from the temporary fixing recesses 69 of the cam member 33 and set in the inlet section 65 (state in FIG. 8 (f)). As a result, the retaining pin 30 is reset to the locking recess 61 of the pin guide member 32, and the retaining pin 30 is taken out of the cam member 33 to draw out the inner rail to the outer rail. It becomes possible.

That is, in this slide rail unit, the retaining pin 30 unintentionally disengages from the standby position while the inner rail 2 is pulled out from the outer rail 1, and the tension guide is applied by the pressing force of the elastic member 31. Even if the groove 62 is dropped to the end position, the retaining pin 30 is returned to the standby position by drawing the inner rail 2 into the outer rail 1 once and pulling it out to the outer rail 1 again. It is made to be made, and the convenience is excellent.

9 shows another example of the cam member 33. As shown in FIG.

As shown in Fig. 2, when the slide rail unit is used for the slide mechanism of the drawer 51 with respect to the furniture main body 50, the stroke range when the inner rail 2 is pulled into the outer rail 1 is shown. The end portion of the mating portion completely coincided with the end portion of the furniture body 50 when the drawer 51 was drawn in. The pressing force of the elastic member 31 is applied to the inner rail 2 at this end portion. It does not work reliably, and there exists a possibility that the high sealing property of the drawer 51 and the furniture main body 50 cannot be maintained. In other words, in order to reliably draw in the drawer with respect to the furniture body, it is necessary that the inner rail has not yet reached the end position at the end position of the drawer.

However, in the guide groove 64 of the cam member 33 shown in Fig. 4A, since the temporary fixing recess 69 is cut out corresponding to the end of the stroke range of the inner rail 2, the inner rail 2 If the draw-in 51 of the drawer 51 to the furniture body 50 is locked before reaching the end of this stroke range, the retaining pin 30 is unintentionally drawn out from the locking recess 61 and the tension guide portion. In the case of dropping to the terminal end position of 62, it becomes difficult to move the retaining pin 30 to the temporary fixing recess 69 in the order shown in FIG.

From this, in the cam member 33a shown in FIG. 9, the width W of the temporary fixation recess 69a is extended from the temporary fixation recess 69 shown in FIG. 4A, and the inner rail 2 strokes. Slightly ahead reaching the end of the range, the retaining pin 30 was configured to be set in the temporary fixation recess 69.

10 (a) to 10 (f) show a series of movements of the retaining pin 30 when the retaining pin 30 is returned to the standby position by using the cam member 33a. 8 is substantially the same as the movement of the retaining pin in Figs. 8A to 8F. That is, as shown in Figs. 10A to 10C, the inner rail 2 is drawn in with respect to the outer rail 1, and the cam member 33a is guided on the outer rail 1 side. When it overlaps with the groove 60, the retaining pin 30 is biased in the direction orthogonal to the inlet direction of the inner rail 2 by the raised portion 68 of the cam member 33a, so that the induction groove 60 is It enters into the retreat recess 63. Since the retreat recess 63 is formed at an angle with respect to the retracting direction of the inner rail 2, the retaining pin 30 is resilient to the elastic member 31 even when it is biased by the raised portion 68 of the cam member 33a. The tensile force is trying to return to the tension guide portion 62 of the guide groove 60. For this reason, when the pulling-in of the inner rail 2 further advances and the holding pin 30 passes through the said raising part 68 as shown in FIG.10 (c), this holding pin 30 will become It enters into the temporary fixation recessed part 69a provided in the cam member 33, and is latched by the cam member 33 in this position (refer FIG. 8 (d)).

At this time, although the inner rail 2 does not reach the terminal part of the stroke range in FIG. 10 (d), since the formation width W of the said temporary fixed recessed part 69a was extended, it is in the said position. It is possible to set the retaining pins 30 to the temporary fixing recesses 69a. Subsequent movements of the retaining pin 30 are completely the same as in Figs. 8E to 8F, and the same reference numerals are used in the drawings, and the description thereof is omitted.

11 shows another embodiment of the slide rail unit of the present invention.

In the embodiment shown in Fig. 1, the retaining pin 30, the pin guide member 32, and the cam member 33 constituting the terminal end pressing means 6 are connected to the outer rail 1 and the inner rail of the slide rail unit. 2), the retaining pin 30 and the pin guide member 32 are mounted on the furniture main body 50 and the cam member 33 is mounted on the drawer 51 in the example shown in FIG. And an outer rail 1 or an inner rail 2. That is, when the drawer 51 is drawn into the furniture main body 50 by the action of the slide rail unit, the cam member 33 installed in the drawer 51 is engaged with the retaining pin 30 provided in the furniture main body 50. The tension force of the elastic member 31 acting on the retaining pin 30 is applied to the drawer. Thus, when the retaining pin 30 or the cam member 33 is installed separately from the outer rail 1 and the inner rail 2, for example, the installation position of the cam member 33 with respect to the drawer 51. According to this, the timing at which the tension force of the elastic member 31 acts on the drawer 51 can be freely changed, and the cam member can be flexibly applied to various applications by changing the installation position of the cam member.

12 is a figure which shows the example which applied the slide rail unit of this invention to the sliding door.

In the present example, the outer rail 1 of the slide rail unit is fixed along the upper end side of the opening 70 of the building, while a sliding 71 that closes the opening 70 is suspended from the inner rail 2. . The outer rail 1 is provided with a pin guide member 32 corresponding to the end portion of the stroke range of the inner rail 2, and the retaining pin guided by the pin guide member 32 on the inner rail 2. The cam member 33 engaged with the 30 is provided. That is, according to the example shown in Fig. 12, when the sliding door 71 is moved to near the end of the stroke range of the slide rail unit, the sliding door 71 is automatically pressed toward the end position, and at the same time, the end position It is convenient to hold the sliding door 71 in the open position or the closed position.

On the other hand, in the slide rail unit shown in Fig. 1, the retaining pin 30 acts when the inner rail 2 is pulled into the outer rail 1, but the pin guide member 32 and the cam member 33 are formed. By changing the installation position and the installation direction of the structure, the retaining pin 30 can also be configured to act when the inner rail 2 is pulled out from the outer rail 1.

In addition, in the example shown in this embodiment, although the pin guide member 32 was fixed to the outer rail 1 and the cam member 33 to the inner rail 2, respectively, the cam member 33 to the outer rail 1 was carried out. It is also possible to change the design so as to fix the pin guide member 32 to the inner rail 2.

In addition, the present invention is applied between a pair of rails that are assembled and attached to each other, and, for example, when the slide rail unit is composed of three of an outer rail, a center rail, and an inner rail, the mutually movable outside It is possible to apply the present invention to each between the rail and the center rail and between the center rail and the inner rail.

In addition, in the above-described embodiment, a plurality of balls are interposed between the outer rail and the inner rail. However, the present invention is not limited thereto so long as the inner rail can be movably supported with respect to the outer rail. The running wheels may be rotatably installed on the inner rail, or a slide surface in sliding contact with each of the outer rail and the inner rail may be formed.

Claims (6)

In the vicinity of the 1st rail 1, the 2nd rail 2 which can stroke along the longitudinal direction of this 1st rail 1, and the stroke end part of this 2nd rail 2, the said 2nd rail 2 End pressurizing means (6) for pressing the head toward the stroke end part, The end portion pressing means 6 is provided with a retaining pin 30 that is erected to be movable relative to the first rail 1 in the longitudinal direction and the width direction thereof, and the retaining pin 30 is connected to the second rail 2. An elastic member 31 which is always urged toward the stroke end portion, and a standby position provided on the first rail 1 and resisting the pressing force of the elastic member 31 to move the retaining pin 30 away from the stroke end portion; And a pin guide member (32) for guiding the retaining pin (30) separated from the standby position toward the stroke end portion with the pressing force, and the second rail (2). It is comprised by the cam member 33 which isolate | separates the said retaining pin 30 from the standby position of the pin guide member 32 as it overlaps with the guide member 32, and locks the retaining pin 30 after the release | release. Slide rail unit provided with a holding function, characterized in that. 2. The pin guide member (32) according to claim 1, wherein the pin guide member (32) has a guide groove (60) into which the tip end of the retaining pin (30) is loosely fitted and is fixed to the first rail (1). The tension guide 60 has a locking recess 61 corresponding to the stand-by position, and a tension guide for guiding the retaining pin 30 separated from the locking recess 61 in the longitudinal direction of the first rail 1. A slide rail unit with a holding function, characterized by having a portion (62). 3. A slide rail unit with a retaining function according to claim 2, wherein the retaining pin (30) is held between the pin guide member (32) and the first rail (1) to be movable. The guide groove (64) according to claim 1, wherein the cam member (33) has a guide groove (64) for receiving the tip of the retaining pin (30) and is fixed to the second rail (2). The introduction part 65 which receives the retaining pin 30 set in the said standby position with the movement of the 2nd rail 2, and moves the retaining pin 30 which received the said pin in the width direction of the 1st rail 1 Holding portion having a holding function, characterized in that it is composed of an actuating portion 66 which is made to deviate from the standby position and a retaining pin 67 that latches the retaining pin 30 passing through the acting portion 66. Slide rail unit with function. The said one end part on the opposite side to the latching recessed part 61 of the guide groove | channel 60 in the said pin guide member 32, The said holding pin 30 was set in the said position, The said A slide rail unit with a retaining function, characterized in that a recessed concave portion 63 is formed to allow the cam member 33 to enter. The pin recovery for returning the said holding pin 30 to a standby position between the introduction part 65 of the guide groove 64 and the acting part 66 in the cam member 33. Slide rail unit with a holding function characterized in that the addition is formed.

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