JPH11196960A - Slide rail and furniture using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide rail by which the undesired movement of a slide member can be controlled, and the furniture using it. SOLUTION: In a slide rail comprising a set of guide rails 21, 22 which are combined in such manner that they can be expanded and contracted, a control part 63 comprising a notch, is formed in the middle in the expanding and contracting direction of the guide rail 21 at a fixed side. The guide rail 22 at a movable side, comprises a lock means 50 comprising a lock lever 54 provided with an engagement part 56 which can be engaged with or disengaged from the control part 63.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide rail suitable for slidably attaching a slide member such as a drawer or a slide shelf to furniture such as a desk, a closet or a range stand, and furniture using the slide rail. About.

[0002]

2. Description of the Related Art As furniture such as a desk, a closet, a range stand, and the like, a furniture in which a slide member such as a drawer or a slide shelf is assembled so as to be able to come and go is widely used. Usually, in this kind of furniture, in order to improve the operability of the slide member, the slide member is slidably supported on the furniture body via a pair of left and right slide rails. As the slide rails, as shown in FIGS. 15 and 16, two guide rails 100 and 101 having a substantially U-shaped cross section formed by press-forming a band plate are provided, and fixed side guides fixed to the furniture body. A fixed-side roller 103 is rotatably provided near a front end of the web portion 100a of the rail 100 via a shaft member 102 in the left-right direction, and a portion near the rear end of the web portion 101a of the movable-side guide rail 101 fixed to the slide member. The movable roller 105 is rotatably provided via a shaft member 104 in the left-right direction, and the fixed roller 103 is attached to the upper flange 101b of the movable guide rail 101 and the movable roller 1
05 is the upper flange 100 of the fixed side guide rail 100
In order to roll while abutting each of the guide rails b, a combination of the two guide rails 100 and 101 facing each other is widely used. In this slide rail, the rollers 103, 1
In order to prevent the movable member 05 from dropping off, the side edges of the upper flange 101b of the movable-side guide rail 101 and the upper flange 100b of the fixed-side guide rail 100 are each bent to form the guide portion 106, and the sliding member is made of furniture. In order to prevent the slide member from dropping off from the main body, the stopper member 1 engages with the movable roller 105 on the web portion 100a of the fixed guide rail 100 to regulate the forward position of the slide member.
07 is formed.

[0003]

In the slide rail, since the two guide rails 100, 101 are guided in a stretchable manner via a pair of rollers 103, 105, the slide member can be smoothly moved in and out. Since the movement of the slide member cannot be restricted at the position where the slide member is moved, the following problem occurs. For example, in a desk for a personal computer having a slide shelf for mounting a keyboard, a slide shelf is pushed by a hand or an arm and gradually retreats while the keyboard is placed on a slide shelf pulled out and operated. There is a problem that the positional relationship between the hand and the hand gradually shifts and mistypes and erroneous operations are likely to occur. Further, in a range table having a slide shelf for placing tableware, etc., when a part of the body comes into contact with the slide shelf, the slide shelf retreats carelessly, the placed tableware falls down, And could be damaged. Furthermore, if furniture is tilted when moving furniture provided with a slide member for moving or rearranging, the slide member may be pulled out by its own weight, which may hinder these operations. Was.

On the other hand, in the above-mentioned furniture, a gap between the left and right side edges of the slide member and the furniture body slightly varies due to a fabrication error of the slide member and a fabrication error of the furniture body. For this reason, in the slide rail, the left and right guide rails 100 and 101 are opposed to each other, that is, the web parts 100a and 100a.
01a is fitted so as to be able to move slightly in the direction of approaching and separating to absorb the fluctuation of the gap. Specifically, the width of the rolling surface 108 of the rollers 103 and 105 with respect to the upper bundles 100b and 101b is configured to be slightly wider than the width of the rollers 103 and 105, so that the rollers 103 and 105 can move slightly in the left-right direction. Is configured. However, with the slide rail having such a configuration, there is a problem that the play of the slide member in the left-right direction occurs when the slide member is assembled to the furniture main body, and the operability and stability of the slide member are slightly reduced.

[0005] It is an object of the present invention to provide a slide rail which can restrict inadvertent movement of a slide member and furniture using the slide rail.

[0006]

According to a first aspect of the present invention, there is provided a slide rail having a pair of guide rails which are telescopically combined with each other. To form
The other guide rail is provided with a lock means having a lock lever having an engagement portion capable of being disengaged from the regulating portion.

In this slide rail, the lock levers are extended in a state where both guide rails are extended by a predetermined length so that the restricting portion of one guide rail faces the engaging portion of the lock lever provided on the other guide rail. By operating the engaging portion of the lock lever to engage with the restricting portion, the movement of both guide rails in the expansion and contraction direction is restricted. On the other hand, by operating the lock lever from this state to disengage the engaging portion from the regulating portion, both guide rails can be extended and contracted. This slide rail is applied, for example, to at least one of a pair of left and right slide rails for assembling the slide member with respect to the furniture main body so as to be able to move back and forth. Then, in a state where the slide member is pulled out from the furniture main body by a predetermined length, the engaging portion is engaged with the restricting portion to restrict the slide member from moving back and forth. Inadvertent movement of the slide member due to contact with a part of the body or another object is restricted.

According to a second aspect of the present invention, the lock lever is held so that the position can be selectively switched between an engagement position where the engagement portion is engaged with the restriction portion and a release position where the engagement portion is separated from the restriction portion. It is preferable to provide an urging means for performing the operation. With this configuration, it is reliably prevented that the lock lever is accidentally switched from the engagement position to the release position or vice versa. According to a third aspect of the present invention, as the urging means, an elastically deformable portion which is elastically deformable by the elasticity of the material is integrally formed on the lock lever, and the lock lever is engaged by utilizing the elastic deformation of the elastically deformable portion. It is preferable to use one that can be selectively switched between the engagement position and the release position. It is also possible to separately provide an elastic member such as a spring member to switch the position of the lock lever between the engaged position and the released position. Therefore, the configuration according to the third aspect is preferable because the number of parts can be reduced and the assemblability can be improved.

According to a fourth aspect of the present invention, a positioning means for positioning the two guide rails may be provided at an extended position where the engaging portion can be disengaged from the regulating portion. In other words, since it is difficult to accurately extend both guide rails to the extended position where the engaging portion can engage with the regulating portion, usually extend both guide rails to a desired position, and then move the lock lever to the release position side. While operating to, until the engaging part engages with the regulating part,
Although both guide rails are slightly moved in the direction of expansion and contraction, if the positioning means is provided as described in claim 4, both guide rails are extended to a desired extension position positioned by the positioning means and locked as they are. By operating the lever, the engaging portion can be reliably engaged with the regulating portion, so that the work of aligning the engaging portion and the regulating portion becomes easy.

According to a fifth aspect of the present invention, a play adjusting means for adjusting the play of the two guide rails in the facing direction may be provided. When this slide rail is applied to furniture or the like, and the slide member is provided on the furniture body so as to be able to move back and forth, the slide rail absorbs a change in a gap between the furniture body and the slide member in the left-right direction due to a manufacturing error. However, with the configuration as set forth in claim 5, the play in the left-right direction of the slide member with respect to the furniture body can be adjusted to a minimum by the play adjusting means.

According to a sixth aspect of the present invention, there is provided a furniture in which a sliding member is attached to a furniture main body via a pair of left and right slide rails so as to be able to move back and forth. At least one is constituted by the slide rail according to any one of claims 1 to 5. In this kind of furniture, the slide member is pulled out from the furniture body by a predetermined length, and the lock lever is operated to engage the engaging portion with the regulating portion, so that the slide member is restricted from moving back and forth. Inadvertent movement of the slide member due to the contact of a part or other object with the slide member is restricted. Further, the slide member can be switched to a freely retractable state by releasing the restricting portion from the engaging portion by the lock lever.

As described in claim 7, it is preferable that furniture is a desk, and a top plate as a slide member is assembled to the desk body via a pair of right and left slide rails so as to be movable back and forth. For example, in a desk for a personal computer, a fixed shelf may be arranged above a rear portion of a top plate for mounting a display or the like, but in such a desk, a fixed shelf is located at a position below the fixed shelf. It gets in the way and becomes difficult to use. For this reason, as described in claim 7, the top plate is configured to be movable back and forth, so that the top plate is pulled forward in accordance with the space on the front side of the desk, and the available area of the top plate top surface is maximized as much as possible. It can be set.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a desk for a personal computer and a slide rail used for the desk. First, the configuration of the desk will be briefly described. As shown in FIGS. 1 to 3, the desk 1 includes a desk body 2,
A top plate 3 is attached to the desk body 2 via a pair of left and right slide rails 20 so as to be movable back and forth. The desk body 2 is provided with a pair of left and right lower side plates 4, a support arm 5 extending forward is fixed on the upper surface of the lower side plate 4, and a side edge component 6 is fixed on the support arm 5. 3 is provided between the left and right side edge components 6 with the upper surface flush.

A reinforcing plate 7 is provided between the upper ends of the left and right lower side plates 4.
The rear plate 8 is fixed between the rear edges of the left and right lower side plates 4, and the upper side plate 9 extending upward is provided at the rear of the left and right side edge component members 6. The fixed shelf 10 is provided with its front edge protruding forward from the upper side plate 9. In the desk 1, the left and right side plates are connected by the reinforcing plate 7, the fixed shelf 10, and the back plate 8 in order to move the top plate 3 in the front-rear direction as described above, and the strength of the desk body 2 is secured. It is configured as follows. Left and right lower side plates 4
A leg member 11 extending forward is provided at a lower end of each of the legs, and a caster 12 for movement is attached to both front and rear ends of each leg member 11.

A crosspiece 13 extending in the front-rear direction is provided near the left and right ends of the lower surface of the top plate 3, and a spacer member 14 extending in the front-rear direction is provided on the inner surface of the left and right crosspieces 13.
A slide rail 20 is provided between the support arm 5 and the spacer member 14, and the top plate 3 is supported via the slide rail 20 so as to be movable back and forth, and can be moved back and forth as shown by the imaginary and solid lines in FIG. It is configured as follows.

Next, the configuration of the slide rail 20 will be described. Since the left and right slide rails 20 are symmetrical, the left slide rail 20 will be described.
However, as long as at least one of the slide rails is configured as described below, a slide rail with a known configuration can be employed for the other slide rail. As shown in FIG. 2 to FIG. 4, the slide rail 20 includes a pair of left and right guide rails 21, 22, and a fixed-side roller 23 and a movable-side roller The desk body 2 is adjusted by adjusting the distance between the rollers 24 and the left and right guide rails 21 and 22 in the left and right direction.
A play adjusting means 30 for adjusting the play of the top plate 3 in the left-right direction with respect to the front plate 3, a lock means 50 capable of locking the top plate 3 in a plurality of drawing positions indicated by phantom lines in FIG. Positioning means 6 for positioning at the predetermined withdrawal position
0.

The guide rails 21 and 22 are formed to have a substantially U-shaped cross section, and the fixed guide rail (hereinafter simply referred to as a fixed rail) 21 is fixed to the spacer member 14 with its opening directed inward (to the right). Movable side guide rail (hereinafter,
22 is the opening outside (left side)
To the crosspiece 13. A fixed roller 23 is rotatably supported near a front end of the web 21a of the fixed rail 21 via a shaft member 25, and a movable roller 24 is provided near a rear end of the web 22a of the movable rail 22 by a shaft member 26. It is rotatably supported via. Both rails 2
1, 22 are upper and lower flanges 21b of the fixed rail 21,
21c is an upper and lower flange 22b of the movable rail 22;
They are fitted with their opening sides facing each other so as to be located on the upper side of 2c. Fixed and movable rollers 23, 24
Combined to expand and contract smoothly through.

By the way, as described above, the fixed rail 21
A stationary roller 23 is provided near the front end of the movable rail 2.
When the movable roller 24 is provided in the vicinity of the rear end of the desk 2, when the movable rail 22 is attached to the fixed rail 21 from the front side, that is, when the top plate 3 is attached to the desk body 2 from the front side. Then, both rollers 23 and 24 interfere with each other. In order to avoid this, a fixed-side insertion portion 27 having no upper flange 21b is formed at the front of the fixed rail 21, and a movable-side insertion portion 28 having no lower flange 22c is formed at the rear of the movable rail 22. And the fixed side insertion portion 27
, The movable side roller 24 is inserted obliquely from the upper front,
The movable roller 24 is connected to the upper and lower flanges 2 of the fixed rail 21.
1b, 21c, the movable rail 22 is rotated downward around the movable roller 24, and the fixed roller 23 is dropped into the movable insertion portion 28, thereby forming the upper and lower flanges of the movable rail 22. A fixed roller 23 is fitted between 22b and 22c, and both rails 21 and 22 are combined.

Upper flange 21 of both rails 21 and 22
Guide portions 29 bent obliquely downward are formed on the side edges of b and 22b, respectively, and the rollers 23 and 24 on the fixed side and the movable side move laterally in a state where both rails 21 and 22 are combined. Are regulated by the guide portions 29, respectively, so that separation of the combined rails 21, 22 in the facing direction is regulated. However, the distance between the guide portion 29 and the webs 21a, 22a is set to be slightly larger than the width of the rollers 23, 24, and the distance between the rollers 23, 24 and the shaft members 25, 26 is slightly increased in the axial direction. Because there is backlash, both rails 21 and 22 approach slightly (for example, about 2 to 5 mm) in the facing direction,
Even if the gap H between the spacer member 14 and the pier 13 fluctuates slightly due to a manufacturing error of the desk body 2 and the top plate 3, the slide rail 20 can be easily assembled during the combination. ing.

Next, the play adjusting means 30 for preventing the play of the top plate 3 in the left-right direction will be described. FIG. 4-
As shown in FIG. 7, a pin member 31 is fixed to a front portion of the fixed rail 21, and a width member 32 composed of a roller is attached to the pin member 31 so as to be rotatable and movable by a certain length in the axial direction. Have been. An inverted gate-shaped elevating block 33 is provided between the width shifting member 32 and the web 21a of the fixed rail 21. The elevating block 33 is stopped by the pin member 31 via the width shifting member 32 and has a side surface. A pair of elongated holes 3 formed in the web 21a
5 so as to be able to ascend and descend at a constant height.
An adjusting screw 36 for raising and lowering the elevating block 33 is provided on the lower flange 21 c of the fixed rail 21, and the height position of the elevating block 33 can be adjusted by operating the adjusting screw 36. Elevating block 33
Is formed with an inclined surface 37 for contacting the outer peripheral portion of the width shifting member 32 and pushing the width shifting member 32 toward the movable guide rail. When the lifting block 33 is raised by the adjusting screw 36, the width shifting member is 32 comes into contact with the inclined surface 37 and moves to the web 22a side of the movable rail 22.

In the backlash adjusting means 30, the top plate 3 is assembled to the desk body 2 in a state where the lifting block 33 is lowered most, and the adjusting screw 36 is operated in this state to raise the lifting block 33. The width shifting member 32 is moved toward the web 22a side of the movable rail 22, so that the play of the top plate 3 in the left-right direction with respect to the desk body 2 is eliminated. However, lifting block 3
3 is raised too much, the movable member 32
Is press-contacted to the web 22a, and the expansion and contraction movement of the movable rail 22 is restricted. Therefore, the lifting block 33 is raised to the maximum while confirming that the expansion and contraction movement is not restricted.

The backlash adjusting means 30 may be of any other configuration as long as it can be adjusted so that the two rails 21 and 22 are separated from each other in the facing direction. For example, the play adjusting means 30 shown in FIGS.
As shown in A, a lever member 41 is provided on a lower flange 21c of the fixed rail 21 via a mounting pin 40, and a roller-like width-shifting member 32A is rotatably provided at a tip end of the lever member 41 via a pin member 42. Alternatively, a projecting piece 43 may be formed in the rear part of the lever member 41 in an inclined shape, and an adjusting screw 36A that can contact the projecting piece 43 may be screwed to the lower flange 21c. In this case, by screwing in the adjusting screw 36A, the tip of the adjusting screw 36A comes into contact with the protruding piece 43,
The lever member 41 is rotated in accordance with the amount of screwing of the adjusting screw 36A, and the width shift member 32A is moved to the web 22a of the movable rail 22.
Then, the play between the two rails 21 and 22 is adjusted.

Further, in the backlash adjusting means 30A, the roller-shaped lateral member 32A is rotatably supported around the vertical axis, and even if the lateral member 32A contacts the web 22a of the movable rail 22, Since the width shifting member 32A rolls on the web 22a, the top plate 3 can be smoothly moved in and out while reliably preventing the top plate 3 from rattling in the left-right direction. In the backlash adjusting means 30, 30A, basically, the width shift members 32, 32A are shifted so as not to be pressed against the web 22a. Therefore, a simple block-shaped member can be used as the width shift member 32. It is. Further, as a mechanism for moving the width shift member, a mechanism that converts the rotation operation into a lateral movement of the width shift member using an eccentric cam or an eccentric shaft, and various mechanisms other than the above using an inclined surface. Can be adopted.

Further, as described above, the width shift members 32, 32
A in addition to the backlash adjusting means 30 and 30A for moving A to the web 22a side of the movable rail 22,
It is also possible to provide a play adjusting means of a type that urges the second web 22a. For example, the play adjusting means 3
0, the lifting block 33 and the adjusting screw 36 are omitted, the width biasing member 32 is urged toward the web 22a side of the movable rail 22 by an elastic member such as a coil spring, and the adjusting screw 36A is omitted in the play adjusting means 30A. Then, the lever member 41 may be urged by an elastic member such as a coil spring so that the width shifting member 32A is pressed against the web 22a of the movable rail 22. Further, as in the play adjusting means 30B shown in FIG. 10, the base end of the leaf spring 45 is fixed to the web 21a of the fixed rail 21, and the distal end of the leaf spring 45 is formed in a roller shape so as to be rotatable around a vertical axis. Width member 32
B may be provided so that the biasing force of the leaf spring 45 presses the width deviation member 32 </ b> B against the web 22 a of the movable rail 22.

However, when the width member is pressed against the web 22a of the movable rail 22 by the elastic member as described above, if the spring constant of the elastic member is set to be large, the width member is strongly pressed against the web 22a. If the moving resistance of the movable rail 22 in the expansion and contraction movement becomes large and is too small, the top plate 3 will rattle against the urging force of the coil spring, so that the spring constant of the elastic member is set to satisfy these. . In addition, since the width deviation member is pressed against the web 22a, the friction resistance between the two members is minimized.
It is preferable to use a ball, a roller, or the like that can roll while being pressed against the web 22a. still,
In the present embodiment, these play adjusting means are connected to the fixed rail 21.
However, it is also possible to provide it on the movable rail 22 side.

Next, a description will be given of the locking means 50 for locking the top plate 3 at a predetermined drawing position. As shown in FIGS. 4, 5, and 11 to 13, four regulating portions 51 formed of rectangular cutouts are formed on the lower flange 22 c of the movable rail 22 at predetermined intervals in the expansion and contraction direction. A mounting portion 52 extending downward is formed at the front of the fixed rail 21, and a pivot pin 53 is fixed to the mounting portion 52 so that the axis thereof is oriented in the left-right direction.
4 is rotatably supported. An operating portion 55 extending forward from the fixed rail 21 is formed at a front portion of the lock lever 54, and an engaging portion 56 engageable with the regulating portion 51 is formed at an intermediate portion of the lock lever 54 so as to protrude upward. Have been. An elastically deformable portion 57 is formed at the rear portion of the lock lever 54 so as to be elastically deformable by the elasticity of the material.
Has been assembled.

Then, as shown in FIG.
When the lever is operated upward, the position switching pin 58 is engaged with the concave portion 57a of the elastic deformation portion 57, and the lock lever 54 is held at the engaging position where the engaging portion 56 can be engaged with the regulating portion 51. As shown, when the operating portion 55 is operated downward, the position switching pin 58 is engaged with the inclined portion 57b of the elastically deformable portion 57, and the lock lever 54 is moved to the release position where the engaging portion 56 is separated from the regulating portion 51. Will be retained. This locking means 50
In the state described above, the lock lever 54 is operated to the engagement position in a state where the movable rail 22 is contracted most or extended by a predetermined length, and the engagement portion 56 is engaged with the regulating portion 51, whereby the movable rail 22 is moved. The expansion and contraction movement of the rail 22 is restricted, and the top plate 3
Are held at the initial position shown by the solid line in FIG. 1 or the drawn position shown by the virtual line drawn out of the desk main body 2 by a predetermined length. When adjusting the draw-out position of the top 3, the lock lever 5
By operating the 4 to the release position and disengaging the engaging portion 56 from the restricting portion 51, the movable rail 22 can be extended and contracted, and the top plate 3 can be moved back and forth.

In this embodiment, four regulating portions 51 are provided, but any number other than four may be provided. Also,
A rack is formed on the lower surface of the lower flange 22c of the movable rail 22, or a side edge of the lower flange is bent downward, and a rectangular or triangular waveform is formed in the bent portion. By engaging the engaging portion 56 of the lock lever 54 with the lock lever 54, the front-back movement of the top plate 3 may be restricted at an arbitrary position. Further, a rough surface is formed on the lower surface of the lower flange 22c as the restricting portion 51, and the lock lever 5 is formed.
By pressing the engaging portion 56 of FIG. 4 against the rough surface, the expansion and contraction movement of the movable rail 22 may be restricted by the frictional resistance between the two.

Although the notch is formed as the restricting portion 51, a restricting portion formed of a through hole such as a square hole or a round hole or a concave portion may be formed. Further, as the regulating portion 51, a projecting portion is formed by cutting and raising the lower flange 22c of the movable rail 22 downward, and as the engaging portion 56, a lock lever 54 is formed.
Alternatively, a concave portion engageable with the protruding portion may be formed. Although the engaging portion 56 is engaged with the regulating portion 51 from below, the engaging portion 56 may be configured to engage from the side. In addition, it is also possible to form the restricting portion 51 on the upper flange 22b of the movable rail 22 and attach the lock lever 54 to the upper portion of the fixed rail 21 so that the engaging portion 56 is engaged with the restricting portion 51 from above. It is. Although the lock lever 54 is selectively switched between the engagement position and the release position by utilizing the elasticity of the material in the elastic deformation portion 57, the lock lever 54 can be selectively switched by separately providing an elastic member. The position may be switched. Restriction part 51 on fixed rail 21
And a lock lever 54 is provided at a rear portion of the movable rail 22, and an operation lever capable of operating the lock lever 54 via a push-pull wire or the like is provided at a front end of the movable rail 22.
The engaging portion 56 of the fixed rail 21 may be configured to be disengaged from the regulating portion 51 of the fixed rail 21.

In the locking means 50, the engaging portion 56 and the regulating portion 51 are engaged in order to engage the engaging portion 56 with the regulating portion 51.
It is necessary to expand and contract the movable rail 22 to a position where the movable rail 22 faces, and the work of the alignment becomes complicated. In order to improve this, a positioning means 60 having the following configuration may be provided. However, the positioning means 60 is auxiliary and can be omitted, or a positioning means having another configuration can be provided. The positioning means 60 will be briefly described with reference to FIGS. 4, 11, 13, and 14.
As shown in the figure, a rear regulating piece 61 extending inside the fixed rail 21 is integrally formed at the rear end of the fixed rail 21, and a front regulating piece 62 extending inside the fixed rail 21 is integrally formed at the front. Is formed. Three notches 63 are formed in the lower flange 21 c of the fixed rail 21 so as to correspond to the restricting portions 51.

A slide plate 64 is provided at the rear of the movable rail 22.
The slide plate 64 is relatively movable in the front-rear direction by a fixed distance with respect to the movable rail 22 via a shaft member 26 of the movable roller 24 and a fixing pin 65 fixed to the web 22a of the movable rail 22. It is attached to.
A regulating lever 66 is rotatably supported on the fixed pin 65 and a spring member 67 is provided. The regulating lever 66 is constantly urged downward through the spring member 67. An operation pin 68 is fixed to the vicinity of the tip of the regulating lever 66,
The operation pin 68 is provided in the cam hole 6 formed in the slide plate 64.
9 is inserted. At the rear end of the slide plate 64, an abutment piece 70 that can abut against the rear regulation piece 61 is integrally formed, and near the front end of the slide plate 64, the abutment with the front regulation piece 62 is possible. The step 71 is formed integrally.

In the positioning means 60, the movable rail 2
When the contact piece 70 of the slide plate 64 abuts the rear regulating piece 61 by moving the slide plate 64 in the contraction direction, the slide plate 64 moves forward relative to the movable rail 22 as shown in FIG. Then, the operation pin 68 moves to the rear part of the cam hole 69, and the tip of the regulating lever 66 is pressed against the upper surface of the lower flange 21c of the fixed rail 21 by the urging force of the spring member 67. Since the slide plate 64 moves only a certain distance back and forth, it is most retracted with respect to the movable rail 22,
The movement of the movable rail 22 in the contraction direction is restricted.

When the movable rail 22 is extended from this state, as shown in FIG. 13, the regulating lever 66 moves while its leading end is in sliding contact with the upper surface of the lower flange 21c of the fixed rail 21. After the front ends thereof are once engaged with the three notches 63 formed correspondingly to the lower flange 21, the lower flange 21 is pressed again by the front edge of the notch 63.
You can get on the upper surface of c and operate it smoothly. However, when the movable rail 22 is pulled out halfway and operated in the contraction direction, the tip of the regulating lever 66 engages the rear edge of the notch 63 closest to the contraction side, and the movable rail 22 contracts in the contraction direction. To the movable rail 22
Is positioned.

On the other hand, when the movable rail 22 is extended most, as shown in FIG. 11, the contact step 71 of the slide plate 64 abuts on the front regulating piece 62, and the slide plate 64 The operation pin 68 moves relatively to the rear, the operation pin 68 moves to the front of the cam hole 69, and the tip of the regulating lever 66 is held in a state of being separated upward from the lower flange 21c of the fixed rail 21, and in this state. Thus, the movable rail 22 can be moved in the contraction direction. Further, in a state where the contact step 71 of the slide plate 64 abuts on the front regulating piece 62, the extension movement of the movable rail 22 is regulated.

As described above, in the positioning means 60,
Since the forward movement of the movable rail 22 is regulated in a state where the tip of the regulating lever 66 is engaged with the notch 63,
In this position, the engaging portion 56 of the locking means is
The movable rail 22 can be easily extended to a position where the engaging portion 56 of the locking means 50 can engage with the restricting portion 51.

In this embodiment, the slide rail 20 for supporting the top plate 3 so as to be able to move back and forth with respect to the desk 1 for a personal computer has been described. The present invention can be applied to slide rails for various furniture and devices such as a slide rail for supporting and a slide rail for drawing out a desk.

[0037]

According to the slide rail according to the first aspect, the guide rail is extended by a predetermined length, and then the lock lever is operated to engage the engaging portion with the regulating portion.
The movement of both guide rails in the expansion and contraction direction is restricted. For this reason, when this slide rail is applied to furniture having a slide member such as a slide shelf, the slide member is pulled out by a predetermined amount, and by operating the lock lever, the slide member is restricted from moving in and out. In addition, it is possible to reliably prevent a trouble caused by the inadvertently moving of the pulled-out slide member.

According to the second aspect, it is possible to reliably prevent the lock lever from being inadvertently switched from the engaged position to the released position or vice versa. With this configuration, it is possible to prevent the lock lever from being inadvertently switched from the engagement position to the release position, or vice versa, while preventing the number of parts from increasing and the assembling property from decreasing. Can be prevented.

According to the fourth aspect of the invention, both guide rails can be easily positioned at the extended position where the engaging portion can engage with the regulating portion, and the extension and contraction movement of both guide rails is regulated. Operation can be simplified. Claim 5
With the configuration as described, the play in the facing direction of both guide rails can be adjusted, so that in the furniture to which the slide rail is assembled, the play of the slide member with respect to the furniture body in the left-right direction can be reduced.

According to the furniture according to the sixth aspect, by operating the lock lever to engage the engaging portion with the regulating portion in a state where the slide member is pulled out from the furniture main body by a predetermined length,
The sliding movement of the slide member is restricted, and the careless movement of the slide member due to a part of the body or another object coming into contact with the slide member is restricted. According to the configuration described in claim 7, it is possible to draw out the top plate forward in accordance with the space on the front side of the desk, and to set the available area of the top surface of the top plate as large as possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a desk using a slide rail of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an exploded perspective view of a slide rail.

FIG. 5 is a longitudinal sectional view showing the vicinity of a play adjusting means and a locking means.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is an explanatory view of a lifting block.

FIG. 8 is an exploded perspective view of a play adjusting means having another configuration.

9 is a sectional view taken along line IX-IX of FIG.

FIG. 10 is a perspective view of a play adjusting means having another configuration.

FIG. 11 is a view corresponding to FIG. 5 in a state where both guide rails are fully extended.

FIG. 12 is an explanatory view of a lock lever.

FIG. 13 is a view corresponding to FIG. 5 in a state where extension movement of both guide rails is restricted.

FIG. 14 is a longitudinal sectional view of the vicinity of the positioning means in a state where both guide rails are contracted most.

FIG. 15 is an exploded perspective view of a slide rail according to a conventional technique.

FIG. 16 is a longitudinal sectional view showing the vicinity of a movable roller of the slide rail.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 desk 2 desk main body 3 top plate 4 lower side plate 5 support arm 6 side edge component member 7 reinforcing plate 8 back plate 9 upper side plate 10 fixed shelf 11 leg member 12 caster 13 crosspiece 14 spacer member 20 slide rail 21 fixed side guide rail 21a Web 21b Upper flange 21c Lower flange 22 Movable guide rail 22a Web 22b Upper flange 22c Lower flange 23 Fixed side roller 24 Movable roller 25 Shaft member 26 Shaft member 27 Fixed side insertion portion 28 Movable side insertion portion 29 Guide portion 30 Playback adjustment Means 31 Pin member 32 Width-adjusting member 33 Elevating block 34 Projection 35 Slot 36 Adjustment screw 37 Inclined surface 30A Play adjustment means 40 Mounting pin 41 Lever member 42 Pin member 43 Projection piece 36A Adjustment screw 30B Play adjustment means 45 Leaf spring 32B Width part REFERENCE SIGNS LIST 50 locking means 51 regulating part 52 mounting part 53 pivot pin 54 lock lever 55 operating part 56 engaging part 57 elastic deformation part 58 position switching pin 57 a recess 57 b inclined part 60 positioning means 61 rear regulating piece 62 front regulating piece 63 notch Part 64 slide plate 65 fixing pin 66 regulating lever 67 spring member 68 operating pin 69 cam hole 70 contact piece 71 contact step

Claims (7)

[Claims] 1. A slide rail having a pair of guide rails which are telescopically combined with each other, wherein one of the guide rails has a restricting portion formed in the middle thereof in the direction of expansion and contraction, and the other guide rail can be engaged with and disengaged from the restricting portion. A lock means having a lock lever formed with an engaging portion. 2. An urging device for urging the lock lever so that the position of the lock lever can be switched between an engaging position where the engaging portion is engaged with the regulating portion and a releasing position where the engaging portion is separated from the regulating portion. The slide rail according to claim 1, further comprising means. 3. An elastically deformable portion which can be elastically deformed by elasticity of a material is integrally formed on the lock lever as the urging means, and the lock lever is brought into an engagement position by utilizing the elastic deformation of the elastically deformable portion. 3. The slide rail according to claim 2, wherein the slide rail is held so as to be able to switch the position between the slide rail and the release position. 4. The slide rail according to claim 1, wherein a positioning means for positioning the two guide rails is provided at an extended position where the engaging portion can be disengaged from the regulating portion. 5. The slide rail according to claim 1, further comprising a play adjusting means for adjusting play of the two guide rails in the facing direction. 6. Furniture in which a sliding member is attached to a furniture main body via a pair of left and right slide rails so as to be able to move back and forth, at least one of the pair of left and right slide rails. Furniture, comprising the slide rail according to any one of claims 5 to 5. 7. The furniture according to claim 6, wherein the furniture is a desk, and a top plate as a slide member is attached to the desk body via a pair of left and right slide rails so as to be movable back and forth.