JPH07189530A - Knob device of furniture - Google Patents

Abstract

PURPOSE:To stabilize the operation by mounting a cam base body, a cam slider, a spring, and the like in a cylindrical case embedded in a door body, receiving a knob body into the case by first pushing in, and projecting it by second pushing in. CONSTITUTION:Guide grooves 6 are provided in the axial direction inside a cylindrical case 1, and in addition a cam base body having guide grooves 13, a cam slider 27, a spring 28 always energizing a knob body 21 in the projecting direction, a stopper 7, and the like are provided therein. The cylindrical case 1 is fixed to a door body A by means of a fixing screw E, so that the case is not deformed, the respective parts are not disengaged, and malfunction is not generated, even if the screw E is strongly tightened. The knob body 21 is received and held in the case 1 by first pushing-in, and held in the condition of projecting from the interior of the case 1 by second pushing-in. Hereby, the knob body 21 can be projected and retreated by one touch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furniture picking device,
In particular, the present invention relates to a device for attaching and detaching a knob to and from a door of furniture.

[0002]

2. Description of the Related Art Conventionally, as a furniture picking device of this type, for example, as described in Japanese Utility Model Publication No. 5-23723, a housing body is fitted to a base body, and a central portion of the base body is fitted. A guide projection is projected forward to the front, a slider having a heart-shaped cam groove is slidably fitted in the guide projection in the front-rear direction, and a knob body for pushing the slider in the housing body is movable back and forth. A crank fitted between the base body and the slider, with a coil spring interposed between the base body and the slider for constantly biasing the knob body forward, and swingably arranged along the guide protrusion. It is known that one end of the pin is engaged with the base body and the other end of the crank pin is engaged with the heart-shaped cam groove of the slider.

[0003]

In the structure described in the above publication, a fixing plate that is in contact with the back surface of the door body is arranged with respect to the base body of the housing body fitted to the door body of the furniture, and this fixing is performed. When the bolt is screwed into the screw hole of the guide projection that is integral with the base body from the screw hole of the plate, the base body of the housing body is fixed to the door body. The bolt may force the base body to be deformed, which may come off the housing body or the crank pin may come off the heart-shaped cam groove on the base body and the slider. Since it is movably arranged, there is a risk that the crank pin will come off the heart-shaped cam groove of the slider due to an impact when the door body is opened and closed, and so on. Or kept, it is difficult to protrude from the housing body, there is a possibility that the knob body is malfunctioning, there is a problem that.

The present invention has been made in view of the above points, and the knob body can be securely held in the case body by the first push-in operation and can be reliably projected from the case body by the second push-in operation. The case body is not deformed by the bolt even when the bolt is screwed in too much, and the knob body does not malfunction. Therefore, the knob body does not move with respect to the case body. It is an object of the present invention to provide a furniture picking device that can appear and disappear in a stable state.

[0005]

SUMMARY OF THE INVENTION A furniture picking device according to the present invention is a cylindrical case body embedded in a movable body of furniture, a picking body provided so as to be retractable in the case body, and the picking body. And a retracting mechanism for keeping the housing in a stored state by the first pushing and projecting it by the second pushing, and the case body has a plurality of guide grooves formed on a peripheral wall portion thereof for guiding the knob body in the front-back direction. At the same time, a stopper is formed at the front end of each guide groove, and a cylindrical cam base body is fixed inside the stopper, and a plurality of guide grooves in the front-rear direction are formed on the peripheral wall portion of the cam base body. Cams are respectively formed between the rear end portions of the case body, and the knob body is slidably engaged with the guide grooves of the case body at the peripheral edge portion located on the cam base body side and locked by the stoppers. Multiple sliding protrusions Each of the protruding and retracting mechanisms is provided with a cylindrical cam slider fixed to the knob body, rotatably fitted to the cam slider while being positioned on the cam slider, and retractably fitted to the cam base body. The cam wheel is composed of a cylindrical cam wheel and a spring that constantly urges the knob body in the protruding direction. The cam wheel is slidably engaged with each guide groove of the cam base body at its rear end, and each guide A plurality of cam protrusions that engage with each cam between the rear end portions of the grooves are provided so as to be engageable and disengageable with each other. The cam slider has the cam protrusions of the cam wheel at the rear end portions of the guide grooves of the cam base body. A large number of switching cams are formed to rotate and move toward each cam.

[0006]

In the furniture picking apparatus of the present invention, one end of the spring is fitted into the cam base fixed to the case body during assembly, and the other end of the spring is fitted into the cam slider so as to be movable back and forth and rotatable. With the fitted cam wheels engaged, and with the cam projections of the cam wheels engaged at the predetermined positions of the switching cams of the cam slider, the spring is pushed toward the cam base body by the cam slider and the cam wheel. To compress.

Then, each cam projection of the cam wheel is engaged with each guide groove of the cam base body. On this occasion,
The respective switching cams of the cam slider and the respective cam protrusions of the cam wheels engaged with the respective switching cams are engaged with each other with their positions slightly displaced.

Further, the knob fixed to the cam slider further compresses the spring through the cam slider and the cam wheel, and each sliding protrusion of the knob is engaged with each guide groove of the case body. Then, by releasing the compression operation of the knob body, the knob body is pushed back by the restoring force of the spring toward the front in the direction of separating from the cam base body, and each sliding protrusion of the knob body becomes the case. It is locked to a stopper at the front end of each guide groove of the body.

The knob body is simply assembled and held in the case body through the retracting mechanism in a state where the knob body is projected forward, and the knob body is prepared for a pushing operation toward the case body.

Next, in the case of holding the knob body in the case body by the first push in the stored state, when the knob body is pushed rearward, the knob body moves through the sliding projections to the case. The knob is moved toward the inside of the case along each guide groove of the body, and the spring is compressed rearward by the knob through the cam slider and the cam wheel, and the knob is pushed into the case. At the same time, the cam wheel is pushed back toward the cam slider by the compressed spring.

Then, the cam projections of the cam wheel in a slightly displaced position are switched and pushed by the switching cams of the cam slider, the cam projections rotate the cam wheel in the cam slider, and the cams move. The protrusions are switched in the circumferential direction and rotationally transferred.

Further, the cam projections of the cam wheel are disengaged from the switching cams of the cam slider and are disengaged from the rear end portions of the guide grooves of the cam base body, and the cam projections are disposed between the cams between the rear end portions of the guide grooves. Respectively engaged with. Therefore, the knob body is held in the case body by the first pushing operation.

Next, when the knob body is pushed out backward from the case body by the second pushing, the knob body is pushed rearward, so that the knob moves the spring backward through the cam slider and the cam wheel. The cam projections of the cam wheel are switched and pushed by the switching cams of the cam slider, and the cam wheels are further rotated in the cam slider by the cam projections. Are switched in the circumferential direction and are rotationally transferred.

Then, the cam projections of the cam wheel are disengaged from the cams between the rear end portions of the guide grooves of the cam base body, and the cam projections are engaged again with the guide grooves of the cam base body.

Further, each cam projection of the cam wheel is engaged with each guide groove of the cam base body, and the cam wheel is moved forward along the guide groove in the direction away from the cam base body by the restoring force of the compressed spring. And the cam slider fitted to this cam wheel is also pushed back toward the front,
The knob fixed to the cam wheel is pushed back forward along each guide groove of the case body through each sliding protrusion.

Then, the push-back of the knob is locked by the sliding protrusions of the knob engaging the stoppers at the front end portions of the guide grooves of the case body. Therefore,
The knob body is held in a state of being projected forward from the case body by the second pushing operation.

Therefore, the knob body is held in the case body by the first pushing operation, and is held in the state of being projected forward from the case body by the second pushing operation.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a case body which is made of metal and is integrally molded in a cylindrical shape with its front open. A mounting bottom plate 2 is integrally molded at the rear end of the case body 1, and a peripheral portion of the mounting bottom plate 2 is formed. A plurality of mounting grooves 3 are formed at even intervals, and a screw hole 5 for mounting is provided in a front-back direction on a boss 4 projecting forward at the center of the mounting bottom plate 2. Is formed so as to penetrate through.

A plurality of guide grooves 6 in the front-rear direction such as four threads are formed in parallel on the inner peripheral wall portion of the case body 1 at equal intervals, and the front end portions of the respective guide grooves 6 are formed. Each stopper 7 is formed. Further, an insertion groove 8 communicating with each of the guide grooves 6 is formed at a front end portion of an inner peripheral wall portion of the case body 1, and a locking hole 9 is formed at a rear end portion of each insertion groove 8. ing.

Further, a plurality of front and rear locking projections 10 for preventing rotation are integrally formed on the outer peripheral wall portion of the case body 1 at equal intervals, respectively, toward the outside. , A flange 11 is provided on the front edge of the case body 1.
Is integrally formed so as to project outward from the outer peripheral wall portion.

Further, 12 is a cam base body formed of a synthetic resin in a cylindrical shape, and on the inner peripheral wall portion of the cam base body 12, a large number of front and rear guide grooves 13 are arranged in parallel at equal intervals. Cams 14 are formed between the rear ends of the adjacent guide grooves 13. Each of the cams 14 has a first cam surface 15 which is continuous with the rear end portion of the guide groove 13 and is inclined at a predetermined inclination angle in the circumferential direction, and a locking step portion 16 on the first cam surface 15. Second cam surface that is continuously inclined in the circumferential direction at a predetermined inclination angle
Has 17.

A plurality of leg pieces 18, which are supported by abutting against the mounting bottom plate 2 of the case body 1 in a number corresponding to the mounting grooves 3 of the case body 1, are provided at the rear end edge of the cam base body 12. The leg pieces 18 are formed so as to integrally project outwardly.
Locking projections 19 that fit into the respective mounting grooves 3 of the case body 1 are integrally formed at the tip ends of the.

The boss 4 is provided in the case body 1.
The cam base body 12 is housed around the center of the cam base body 12, the leg pieces 18 of the cam base body 12 are joined to the mounting bottom plate 2 of the case body 1, and the locking projections 19 of the leg pieces 18 are attached to the mounting bottom plate 2. The fitting grooves 3 are integrally fitted and fixed in the respective mounting grooves 3.
Then, between the case body 1 and the cam base body 12, there is formed a ring-shaped moving space 20 in which a knob body, which will be described later, appears and disappears.

Reference numeral 21 is a knob having a hollow cylindrical fitting hole 21a made of synthetic resin and having a rear opening. A pusher 22 is formed on the front surface of the knob 21. At the same time, a gripping portion 23 narrowed down in the radial direction is formed in the middle portion thereof. Further, a peripheral edge portion of a rear end portion of the knob body 21 located on the cam base body 12 side, that is, a rear end peripheral edge portion of the fitting hole 21a is slidably engaged with each guide groove 6 of the case body 1. A plurality of sliding protrusions 24 that are engaged with the stoppers 7 are integrally provided.

Further, reference numeral 25 indicates a second state in which the knob body 21 is held in the case body 1 in a housed state by the first pushing operation.
Is a retractable mechanism for projecting to the front of the case body 1 by a pushing operation. The retractable mechanism 25 is a cylindrical cam wheel 26 fitted in the cam base body 12 so as to be retractable, and is rotated by being positioned on the cam wheel 26. A cylindrical cam slider 27 which is freely fitted and fixed to the knob body 21.
And the mounting bottom plate 2 of the cam base body 12 and the cam wheel
26 is provided between the handle and the cam slider 27.
It is composed of a coil spring 28 that constantly urges 21 in the protruding direction.

The cam wheel 26 is formed of synthetic resin into a hollow cylindrical shape with its rear open, and a closing plate 29 for abuttingly supporting the end of the coil spring 28 is integrally formed at its front end. A plurality of cams are slidably engaged with the respective guide grooves 13 of the cam base body 12 at the rear end portion thereof, and are releasably engaged with the respective cams 14 between the rear end portions of the respective guide grooves 13. The protrusions 30 are provided so as to project.

Further, each of the cam projections 30 has a cam surface 31 at the front end portion which is inclined rearward at a predetermined inclination angle. Further, on the outer peripheral portion of the cam wheel 26, a circumferential locking projection 32 is formed in an annular shape and located near each of the cam projections 30.

The cam slider 27 is formed of a synthetic resin into a hollow cylindrical shape with its front and rear portions opened, and a hollow fitting hole 33 formed inside the cam slider 27 holds the cam wheel 26 by the locking projection 32. It is formed in such a size that it can be moved back and forth in a positioned state and rotatably in the circumferential direction.

A flange 34, which is fixed by press-fitting to the inner peripheral edge of the pushing portion 22 of the knob 21, is integrally provided at the front edge of the cam slider 27 so as to project outward. At the same time, on the outer side of the cam slider 27, guide ridges 35 in the front-rear direction that are engaged with the guide grooves 13 of the cam base body 12 at the opposite positions so as to advance and retract are integrally provided at the opposite positions.

Further, each cam protrusion 30 of the cam wheel 26 is provided on the rear end edge of the cam slider 27.
A large number of switching cams 36 that are pushed toward 12 and that are rotationally moved from the guide grooves 13 of the cam base body 12 toward the cams 14 are formed in an annular shape. The annular switching cam 36 is formed by annularly projecting at the rear end edge of the cam slider 27 by alternately repeating the cam surface 37 inclined at a predetermined inclination angle and the locking step portion 38.

Further, an annular engaging ridge located near the plurality of switching cams 36 and positioned on the inner peripheral portion of the cam slider 27 by being engaged with each locking ridge 32 of the cam wheel 26.
The inside of 27a is integrally projected. The cam wheel 26 and the cam slider 27 are provided with respective locking projections 32.
And the engaging ridge 27a, they are positioned at a predetermined position and are fitted so as to be movable back and forth and rotatable.

Thus, each cam 14 of the cam base body 12 is
First cam surface 15 and second cam surface 17, said cam foil
The cam surface 31 of each cam projection 30 of 26 and the cam surface 37 of the switching cam 36 of the cam slider 27 are formed to be inclined at substantially the same inclination angle.

Furthermore, 39 is a ring-shaped front cover made of synthetic resin, and this front cover 39 has a fitting hole 40 into which the knob 21 is fitted. The portion is an engaging surface of the front end portion of each sliding protrusion 24 of the knob body 21.
It is designed to come into contact with and be supported by 41. Further, the outer side portion of the front cover 39 contacts the flange 11 of the case body 1.

A plurality of insertion pieces 42 that engage with the guide grooves 6 from the insertion grooves 8 of the case body 1 are integrally formed on the front cover 39 so as to integrally project toward the case body 1. A locking projection 43 is formed at the tip of each of the insertion pieces 42 so as to be fitted and locked in each locking hole 9 of the case body 1.

Next, in the structure of the above-described embodiment, at the time of assembly, the cam base body 12 is inserted into the case body 1 and the cam base body 12 is pushed toward the mounting bottom plate 2 of the case body 1 so that the cam base body 12 is pushed. The leg pieces 18 of the body 12 are brought into contact with the mounting bottom plate 2 and the locking projections of the leg pieces 18 are provided.
19 are integrally fitted in each mounting groove 3 of the mounting bottom plate 2. The cam base body 12 is fixed around the boss 4 of the mounting bottom plate 2, and a moving space 20 is formed between the cam base body 12 and the case body 1 in which the knob body 21 appears and disappears in the front-rear direction.

Further, one end of the coil spring 28 of the retracting mechanism 25 is fitted in the cam base body 12 fixed to the case body 1, and the cam slider 27 is moved back and forth with respect to the other end of the coil spring 28. And the rotatably fitted cam wheel 26 is engaged, and the cam projections 30 of the cam wheel 26 are engaged with the predetermined positions of the switching cams 36 of the cam slider 27, respectively. And pushes the coil spring 28 toward the cam base body 12 to compress it.

Then, the cam projections 30 of the cam wheel 26 and the guide projections 35 of the cam slider 27 are engaged with the guide grooves 13 of the cam base body 12, respectively. At this time, the switching cams 36 of the cam slider 27 and the cam projections 30 of the cam wheel 26 engaged with the switching cams 36 are the cam projections 30 and the guide ridges 35 and the guide grooves 13 of the cam base body 12. Are engaged with each other in a meshed state with their positions slightly displaced by the setting-related positions.

A knob body fixed to the cam slider 27
That is, the flange 34 at the front end of the cam slider 27 is press-fitted into the fitting hole 21a of the knob body 21, and the knob body 21 fixed to the cam slider 27 is fixed to the cam slider 27 and the cam wheel 26.
The coil spring 28 is further compressed via the above, and each sliding protrusion 24 of the knob body 21 is engaged with each insertion groove 8 of the case body 1, respectively. By rotating the knob body 21 in the circumferential direction of the case body 1, the sliding protrusions 24 of the knob body 21 are inserted from the insertion grooves 8 of the case body 1 to the front portions of the guide grooves 6. Respectively engaged with.

By releasing the compression operation of the knob 21, the knob 21 is pushed back by the restoring force of the coil spring 28 toward the front in the direction away from the cam base 12, and the knob 21 The sliding protrusions 24 are respectively locked to the stoppers 7 at the front ends of the guide grooves 6 of the case body 1.

In this way, the case body 1 has a retractable mechanism.
The knob 21 is easily assembled and held in a state in which the knob 21 is projected forward through 25.

Next, when attaching the knob body 21 to the movable body of furniture, that is, the door body A, the case body 1 having the knob body 21 in the mounting hole B formed in the door body A is replaced by the door body A. This case body 1 is fitted by fitting from the front to the rear of the case.
The flange 11 at the front end of the mounting hole B is brought into contact with the opening edge portion of the front end of the mounting hole B.

Further, a fixing plate C larger than the mounting hole B is brought into contact with the back surface of the door body A, and a communicating hole communicating with the screw hole 5 of the mounting bottom plate 2 of the case body 1 formed in the fixing plate C. The case body 1 having the knob body 21 is provided with the door body A by screwing the fixing screw E from D to the screw hole 5 of the mounting bottom plate 2 and tightening it.
It is easily fixed in the mounting hole B in the embedded state.

At this time, since the case body 1 is an integrally molded product having a cylindrical shape and the retracting mechanism 25 is not directly engaged with the mounting bottom plate 2 which is tightened by the fixing screw E, the fixing screw E is strongly tightened. Also, the retracting mechanism 25 does not come off, the case body 1 is not deformed, and the cause of the malfunction of the knob body 21 does not occur.

Further, the front cover 39 is fitted into the knob body 21 by using the fitting hole 40, and each insertion piece 42 of the front cover 39 is inserted into each insertion groove 8 of the case body 1, By pushing the front cover 39 toward the case body 1, each insertion piece 42 of the front cover 39 is pushed.
The locking protrusions 43 are pressed into the locking holes 9 of the case body 1 and locked. And each insert piece of this front cover 39
The insertion grooves 8 are closed at 42, and the sliding protrusions 24 of the knob body 21 are prevented from coming off the respective guide grooves 6, so that the knob body 21 rotates and falls off from the case body 1. Is prevented.

In this way, the case body 1 having the knob body 21 is easily attached to the door body A, and the knob body 21 provided on the case body 1 via the retracting mechanism is attached to the front part of the door body A. The knob 21 can be easily assembled and held in a state of being projected forward, and the knob body 21 can be prepared for a pushing operation toward the case body 1.

Next, in the case of holding the knob body 21 in the case body 1 in the housed state by the first pushing, the knob body is
When pushing the pushing part 22 of 21 toward the rear, this picking body
21 is moved toward the inside of the case body 1 along the guide grooves 6 of the case body 1 via the respective sliding projections 24, and the coil 21 is moved by the knob body 21 via the cam slider 27 and the cam wheel 26. The spring 28 is compressed rearward, the knob body 21 is pushed into the case body 1, and the compressed coil spring 28 pushes the cam wheel 26 back toward the cam slider 27.

Then, each switching cam of the cam slider 27
At 36, the cam projections 30 of the cam wheel 26 in a meshed state that is slightly displaced are switched and pushed, and the cam wheels 26 are rotated by the cam projections 30 in the cam slider 27.
The cam projections 30 are switched in the circumferential direction and rotationally transferred.

The cam projections 30 of the cam wheel 26 are disengaged from the switching cams 36 of the cam slider 27, and are disengaged from the rear end portions of the guide grooves 13 of the cam base 12 body. The cams 14 between the rear end portions are engaged with each other. Therefore, the knob body 21 is held in the case body 1 in the housed state by the first pushing operation.

Next, when the knob body 21 is pushed out rearward from the case body 1 by the second pushing, the knob body 21 is pushed rearward, whereby the cam slider 27 and the cam wheel 26 are moved by the knob body 21. Through the coil spring 28
Is compressed rearward, each cam projection 30 of the cam wheel 26 is switched and pushed by each switching cam 36 of the cam slider 27, and the cam wheel 26 is further rotated in the cam slider 27 by each cam projection 30. As each cam projection 30 is moved, it is switched in the circumferential direction and rotationally transferred.

The cam projections 30 of the cam wheel 26 are disengaged from the cams 14 between the rear end portions of the guide grooves 13 of the cam base body 12, and the cam projections 30 are aligned with the guide grooves 13 of the cam base body 12. Re-engaged.

Further, each cam projection 30 of the cam wheel 26 is engaged with each guide groove 13 of the cam base body 12, and the cam wheel 26 is moved along each guide groove 13 by the restoring force of the compressed coil spring 28. It is pushed back toward the front in the direction away from the body 12, and the cam slider 27 fitted to the cam wheel 26 is also pushed back toward the front, and the knob body 21 fixed to the cam wheel 26 is moved by each sliding projection. It is pushed back through the guide grooves 6 of the case body 1 via 24.

Then, the push-back of the knob body 21 is locked by the sliding projections 24 of the knob body 21 engaging with the stoppers 7 at the front end portions of the guide grooves 6, respectively. Therefore, the knob 21 is held in a state of being projected forward from the inside of the case body 1 by the second pushing operation.

Therefore, the knob body 21 is held in the case body 1 in the housed state by the first pushing operation, and is held in the state of being projected forward from the case body 1 by the second pushing operation. Then, the knob 21 can be easily retracted from the case body 1 with one touch by repeating the first pushing operation and the second pushing operation.

Next, in the above embodiment, the case body 1 is made of metal and formed into a cylindrical shape. However, the case body 1 is made of synthetic resin and formed into a cylindrical shape. Good. In this case, in order to secure the strength of the case body 1, a disc-shaped reinforcing plate is superposed and fixed on the inner side of the mounting bottom plate 2 of the case body 1, and
Each leg piece 18 of the cam base body 12 is provided on the circumferential side of the reinforcing plate.
Fitting holes for fitting the locking projections 19 are formed respectively. Then, the locking projections 19 of the leg pieces 18 of the cam base body 12 are fitted and fixed to the mounting grooves 3 of the mounting bottom plate 2 through the fitting holes.

In the above embodiment, the knob body 21 and the cam slider 27 are separately molded, and the cam slider 27 is press-fitted into the knob body 21 and fixed to each other. By forming the knob body 21 separately from the door body 27, it is possible to easily attach / detach the knob body 21 to / from the door body A with an arbitrary shape and color. However, the present invention is not limited to this, and the cam slider 27 may be integrally provided on the knob body 21.

Furthermore, in each of the above-mentioned embodiments, the case body 1 is described as being integrally molded in a cylindrical shape from metal and synthetic resin. However, the case body 1 is not limited to this, and the case body 1 is divided into two parts, for example. They may be molded, and the two may be fitted to each other to be integrally formed into a cylindrical shape. With such a configuration, the case body 1 can be easily molded.

[0058]

According to the present invention, the knob body is provided on the case body so as to be retractable through the retracting mechanism, and the retracting mechanism can securely hold the knob body in the housed state by the first pushing. At the same time, it is possible to surely project it from the case body by the second pushing. The retracting mechanism includes a cylindrical cam slider fixed to the knob body, a cylindrical cam wheel that is positioned on the cam slider and rotatably fitted to the cam base body, and a cylindrical cam wheel that retractably fits on the cam base body. Since the knob body is composed of a spring that constantly urges it in the protruding direction, the case body will be deformed by the fixing bolt even if the fixing bolt that fixes the case body to the furniture movable body is screwed too hard. Without
The operation of the retracting mechanism is not obstructed and the picking body does not malfunction, and the forward / backward movement of the picking body is ensured by the rotation of the picking body in the circumferential direction without rotating the picking body by interlocking switching of the cams The knob body can be converted and held in the case body in a housed state or projected from the case body. Therefore, the knob body can be retracted in the case body in a stable state.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a furniture picking device showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a state where the knob body is projected.

FIG. 3 is a cross-sectional view showing a state where the knob body is housed therein.

FIG. 4 is a sectional view of the same cam base body.

FIG. 5 is a rear view of the same.

FIG. 6 is a side view of the same cam wheel.

FIG. 7 is a rear view of the same.

FIG. 8 is a side view of the same cam slider.

FIG. 9 is a rear view of the same.

[Explanation of symbols]

 1 Case body 6 Guide groove 7 Stopper 12 Cam base body 13 Guide groove 14 Cam 21 Handle body 24 Sliding protrusion 25 Injecting / retracting mechanism 26 Cam wheel 27 Cam slider 28 Spring 30 Cam protrusion 36 Switching cam A Movable body

Claims (1)

[Claims] 1. A cylindrical case body embedded in a movable body of furniture, a knob body provided in the case body so that the knob body can be retracted and retracted, and the knob body is held in a housed state by a first pushing operation, and a second state is provided. The case body is formed with a plurality of guide grooves for guiding the knob body in the front-rear direction, and a stopper is formed at the front end portion of each of the guide grooves. Then, a cylindrical cam base body is fixed to the inside of the cam base body, and a plurality of guide grooves in the front-rear direction are formed in the peripheral wall portion of the cam base body, and cams are respectively formed between the rear end portions of the guide grooves, The knob body has a plurality of sliding protrusions, which are slidably engaged with the respective guide grooves of the case body and are locked with the stoppers, at the peripheral edge portion located on the cam base body side, The retracting mechanism is the picking A cylindrical cam slider fixed to the body, a cylindrical cam wheel that is positioned on the cam slider and rotatably fitted to the cam base body, and that is retractably fitted to the cam base body. The cam wheel slidably engages with each guide groove of the cam base body at its rear end, and is engageable with and disengageable from each cam between the rear ends of the guide grooves. A plurality of cam projections that engage with each other are provided in a protruding manner, and the cam slider has a plurality of switching cams formed at its rear end portion for rotationally shifting each cam projection of the cam wheel from each guide groove of the cam base body toward each cam. A furniture picking device characterized by the above.