JPH0523723Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a furniture picking device used for furniture doors, etc., and in particular, to a furniture picking device that is used for furniture doors, etc. related to the device.

(Prior Art) Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 17872/1983 or Japanese Patent Application No. 37846/1987,
The furniture is equipped with a base body embedded in a door of furniture, etc., which supports the knob body so that it can be stored and protruded freely, and is provided with a retractable mechanism that holds the knob body in the stored state by a first push and causes it to protrude by a second push. Picking devices are known. However, for example, in the device shown in Japanese Utility Model Application Publication No. 60-17872,
A retractable mechanism consisting of a crank pin and a heart-shaped cam groove in which the crank pin is engaged is provided within the container frame protruding from the back of the door.
In the device shown in Utility Model Application Publication No. 61-37846,
The mechanism for retracting and sliding the knob and the mechanism for preventing it from coming off.
Since it is composed of a relatively large number of parts other than the knob and the base, such as the rotor, surrounding tube, and rotation control element, the length of the knob in the direction of protrusion and retraction, that is, the thickness direction of the door, is limited in any case. It gets bigger.

(Problems to be solved by the invention) As mentioned above, in the conventional furniture picking device, the device had to be long, so if the door was thin, the device could not be installed. Otherwise, there were problems such as a part of the device protruding from the back side of the door body and getting in the way. Also,
If the length is forcibly shortened, the support of the knob to the base becomes unstable, causing the problem that the knob is tilted and does not operate reliably.

The present invention is an attempt to solve these problems.In particular, the overall length of the knob in the direction of protrusion and retraction can be reduced, it can be installed smoothly even when the door is thin, and it operates reliably. The object of the present invention is to provide a furniture picking device.

[Structure of the idea]

(Means for Solving the Problems) The furniture picking device of the present invention is formed into a substantially cylindrical box shape with an open front by a base body 3 and a housing body 4 connected to the front side of the base body 3, The base body 1 is embedded in the movable body 51, and the base body 1 is formed into a substantially cylindrical box shape with an open rear surface.
A knob body 21 is slidably fitted in the knob body 21 with the same axial direction and housed and protruded through the front opening 2, and a knob body 21 is provided inside the knob body 21 so as to be rotatable in the circumferential direction thereof. a slider 31 that extends from the inside of the base body 1 to the inside of the knob body 21 and biases the knob body 21 in the projecting direction; 2, a plurality of legs 23 are formed to project from the rear end of the outer peripheral surface of the knob body 21, and a plurality of legs 23 are formed to protrude from the rear end of the outer peripheral surface of the knob body 1, and a plurality of legs 23 are provided on the inner peripheral surface of the base 1 from the rear end to the front end. The leg portion 2 has a locking portion 13 at the front end thereof.
3 are slidably engaged with each other to form a guide groove 12 that supports the knob body 21 in a freely forward and backward direction and prevents it from coming off, and a substantially prismatic guide protrusion 14 extending in the axial direction is provided at the center of the base body 1. At the same time, a fitting hole 32 is formed in the slider 31 to be slidably fitted into the guide protrusion 14, and the projecting/retracting mechanism 45 is connected to a crank pin 42 which is swingably supported by the base body 1. , a heart-shaped cam groove 35 formed on the side surface of the slider 31 and into which the crank pin 42 is slidably engaged; It is spirally inclined.

(Function) In the furniture picking device of the present invention, when the knob body 21 in the stored state is pushed in, the retention of the knob body 21 by the retracting mechanism 45 is released, and the biasing force of the spring 41 causes the knob body 21 to be fixedly attached. The fitting hole 32 of the slider 31 provided in the slider 31 slides along the guide protrusion 14 of the base body 1, and the leg portion 23 of the knob body 21 slides along the guide groove 12 of the base body 1 while the knob body 21 protrudes from the base body 1, and then the leg portions 23 engage with the locking portions 13 at the front end of the guide groove 12, and the knob body 21 is held in the protruding state. Then, by picking the protruding knob body 21, the door 51 as a movable member of the furniture is opened and closed. Further, when the protruding knob body 21 is pushed in, the leg part 23 moves into the guide groove 12.
While the fitting hole 32 slides along the guide protrusion 14, the knob body 21 is inserted into the base body 1, and the side surfaces of the crank pin 42 and the slider 31, which are swingably supported within the base body 1, are The knob body 21 is held in the housed state within the base body 1 by the operation of a retracting mechanism 45 which is formed in a heart-shaped cam groove 35 and in which a crank pin 42 is slidably engaged. At this time, even if the end of the knob 21 is pushed, because the guide groove 12 is spirally inclined, a part of the force applied in the axial direction of the knob 21 is converted into a force in the circumferential direction. Since rotational force is applied to the knob body 21,
The force applied to the knob body 21 in the axial direction is also equalized without being biased, so that the knob body 21 operates reliably.

(Embodiment) Hereinafter, an embodiment of the furniture picking device of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a base body, which is formed into a substantially cylindrical box shape with a front opening 2. This base body 1 is divided into front and rear parts, and the rear base body 3
and a housing body 4 coupled and fixed to the front side of the base body 3. That is, a plurality of engagement legs 5 are formed at the rear end of this housing body 4 to protrude rearward, and at the rear end of these engagement legs 5, locking claw portions 6 bent in the inner radial direction are formed. . On the other hand, a plurality of engagement grooves 7 are formed on the circumferential surface of the base body 3 from the front end to the rear end thereof, and an engagement groove located at the rear end of these engagement grooves 7 and recessed in the inner radial direction. A stop portion 8 is formed. Then, the engagement leg 5 is fitted into the engagement groove 7, and the front and rear engagement claws 6 are engaged with the engagement step 8.
The base 3 and the housing body 4 are connected.

Further, a flange portion 11 is provided at the front end portion of the base body 1.
is formed. Further, a plurality of guide grooves 12 are formed on the inner circumferential surface of the base body 1 from the rear end to the front end. These guide grooves 12 are spaced apart from each other by 90 degrees with respect to the axis of the base body 1, and the stepped portions at the front ends of these guide grooves 12 serve as locking portions 13. Furthermore, the portions of these guide grooves 12 located on the front side of the housing body 4 are spirally inclined in the same direction and at the same lead angle with respect to the axis of the base body 1. Further, a quadrangular prism-shaped guide protrusion 14 is formed in the center of the base body 1 along its axis from the rear surface to the front end. A screw hole 15 is formed in the guide projection 14 and opens at the rear surface of the base body 1. Further, a holding hole 16 is formed in the rear end of the circumferential surface of the base body 1, and this holding hole 1
A square hole 1 is located in the rear surface of the base 1 near the base 1.
7 is formed.

Reference numeral 21 denotes a knob that is slidably fitted into the base body 1 with the axial direction aligned, and is formed into a substantially cylindrical box shape with a rear opening 22; The length of the base member 1 is approximately equal to the length of the base member 1 in the axial direction, and the outer diameter thereof is approximately equal to the inner diameter of the base member 1. and,
A plurality of legs 23 are formed at the rear end of this knob body 21 and protrude in the outer diameter direction.
is slidably engaged with the guide groove 12 of the base body 1, and the knob body 21 is supported with respect to the base body 1 so as to be freely movable back and forth. Further, an arcuate recess 24 is formed at the front end of the inner circumferential surface of the knob body 21 along the circumferential direction thereof.

Reference numeral 31 denotes a slider, which is formed into a substantially rectangular tube shape, and the inside thereof is a fitting hole 32 into which the guide protrusion 14 of the base body 1 is slidably fitted.
Further, a flange-shaped disk portion 33 is formed at the front end of the slider 31.
An annular protrusion 34 is formed on the outer peripheral surface of. The annular protrusion 34 of the slider 31 is press-fitted into the arcuate recess 24 of the knob 21, and the slider 31 is supported within the knob 21 so as to be rotatable in the circumferential direction thereof. Furthermore, a heart-shaped cam groove 35 is formed on one outer surface of the slider 31. As shown in FIG. 4, this cam groove 35 is a first guide groove 3 that has a heart-shaped tip inward and becomes shallower as it goes forward from this inner end.
6. A second guide groove 37 connected to the front end of the first guide groove 36 and slightly deeper than the front end of the first guide groove 36; a second guide groove 37 connected to one side of the second guide groove 37; A third guide groove 38 that is slightly deeper than the second guide groove 37, and a third guide groove 38 that is continuous from one side of the third guide groove 38 toward the rear in the middle of the first guide groove 36. One end on the guide groove 38 side is the third guide groove 3
8, and gradually becomes shallower toward the rear from there, and the other end on the first guide groove 36 side is a fourth guide groove 39 that is slightly shallower than the first guide groove 36. Furthermore, the rear end of one side of the slider 31 on which the cam groove 35 is formed forms a protrusion 40 that protrudes rearward from the other side and faces the square hole 17 of the base body 1 .

Further, a coil-shaped spring 41 is installed between the rear surface of the base body 1 and the disk portion 33 of the slider 31, and is located inside the base body 1 and the knob body 21. The knob body 21 is always urged forward.

Further, a support shaft portion 43 formed by bending the rear end of the crank pin 42 is inserted into the holding hole 16 of the base body 1, and this crank pin 42 is inserted into the holding hole 16 of the base body 1.
It is swingably supported inside. An engaging portion 44 bent at the front end of the crank pin 42 is elastically and slidably engaged with the heart-shaped cam groove 35, and the cam groove 35 and the crank pin 42 are connected to each other. It constitutes a retracting mechanism 45.
Note that the support shaft portion 43 of the crank pin 42 is held down by a spring 41.

When assembling, for example, the knob body 21 is assembled into the housing body 4, and then the housing body 4 is coupled to the base body 3 into which the crank pin 42, the spring 41, and the slider 31 are assembled.

In addition, in order to attach this knob device to a door 51 or the like as a movable member of furniture, the base body 1 is fitted from the front into the mounting hole 52 formed through the door 51, and then the rear surface of the continuous base body 1 and A fixing plate 53 is brought into contact with the back surface of the door 51, and this fixing plate 5
3 and is screwed into the screw hole 15 of the base body 1. In this state, the flange portion 11 of the base 1 and the fixing plate 53 are sandwiched between the door 51, and the base 1 is attached to the door 51.
It is firmly fixed at 1.

Next, the operation of the apparatus of this embodiment will be explained.

As the knob body 21 continues to be pushed in, the protruding/retracting mechanism 45 repeatedly retracts into the base body 1 and protrudes from the front opening 2 of the base body 1 .

That is, in the stored state shown by the solid line in FIG. The spring 41 is engaged with the rearwardly recessed part.
The knob body 21 moves against the forward biasing force of the base body 1.
It is kept stored inside.

Here, when the knob 21 is pushed rearward, the engaging portion 44 of the crank pin 42 is inserted into the heart-shaped cam groove 3.
5, but at this time, the second guide groove 37 is shallower than the third guide groove 38, and the fourth guide groove 39 is deeper. Therefore, the engagement portion 44 moves to the fourth guide groove 39 due to the elasticity of the crank pin 42. Then, the restriction on rearward movement of the engaging portion 44 is released, so the knob 21
protrudes forward due to the biasing force of the spring 41. At this time, the leg part 23 of the knob body 21 slides along the guide groove 12 of the base body 1, but the leg part 23 comes into contact with the locking part 13 at the front end of the guide groove 12.
The knob body 21 is braked. That is, the locking portion 13
By engaging the legs 23, the knob body 21 is attached to the base body 1.
It is prevented from falling off and held in a protruding state.

Then, as shown by the chain line in FIG. 1, the door 51 is opened and closed by gripping the protruding knob 21.

Moreover, when the protruding knob body 21 is pushed rearward again, the first
Since the guide groove 36 is deeper than the fourth guide groove 39, the engaging portion 44 of the crank pin 42 reaches the second guide groove 37 via the first guide groove 36. Here, when you release your finger from the knob 21, the first guide groove 36 becomes shallower than the second guide groove 37, and the third guide groove 38 becomes deeper, so the cam groove Slider 31 formed with 35
is biased forward by the spring 41, so that the engaging portion 44 of the crank pin 42 is engaged with the third guide groove 38, and the knob body 21 is held in the stored state.

When not in use, the knob body 21 can be stored in the base body 1 embedded in the door 51, so that the knob body 21 does not get in the way.

By the way, when the knob 21 is pushed in the axial direction and stored, the legs 23 slide along the guide groove 12 of the base 1. If it is parallel to the axial direction of the axis, the following problem will occur. In other words, to ensure smooth sliding,
Of course, there must be a certain amount of clearance or backlash between the leg portion 23 and the guide groove 12;
Therefore, if you push the end of the knob 21,
This knob body 21 tilts and does not move smoothly. Therefore, if the length of the leg portion 23 in the sliding direction is increased in order to reduce backlash, the length of the device in the same direction will also be increased.

However, in the present invention, since the guide groove 12 is spirally inclined, the above-mentioned problem does not occur. That is, when the knob body 21 is pushed in the axial direction, a component force in the circumferential direction, that is, a rotational force is generated due to the inclination of the guide groove 12.
Even if an axial force is applied to an uneven position by pushing the end of the knob 21, the axial force is evenly applied to the entire circumference through the rotation of the knob 21. The knob body 21 always slides smoothly. Therefore, it is also possible to shorten the leg portions 23.

Note that when the knob body 21 rotates with respect to the base body 1, the slider 31 rotates relative to the knob body 21, but does not rotate with respect to the base body 1.

According to the above configuration, it is possible to make the entire device more compact, especially in the longitudinal direction of the device, that is, in the thickness direction of the door 51, for the following reasons.

First, the mechanism for supporting the base 1 of the knob 21 and preventing it from falling off is provided by the leg portion 23 protruding from the rear end of the outer circumferential surface of the knob 21 and the guide groove formed on the inner circumferential surface of the base 1. It must consist of 12. In other words, the support and retaining mechanism
Since it is located in the periphery of the knob body 21,
It becomes possible to make the device shorter and to make effective use of the internal space.

Second, the protruding and retracting mechanism 45 is connected to a heart-shaped cam groove 35 formed on the side surface of the slider 31 that is provided in the knob body 21 and slidably fitted to the guide protrusion 14 in the base body 1; 1 and a crank pin 42 swingably supported within the crankshaft 1.
In other words, the space within the hollow base body 1 and the knob body 21 is effectively utilized to compactly incorporate the ejection/retraction mechanism 45.

Thirdly, as mentioned above, the support and retaining mechanism and the retracting mechanism 45 are composed of a small number of members.

Fourthly, as described above, by sloping the guide groove 12 in a spiral manner, the leg portion 23 can be shortened.

For these reasons, the device can be made shorter and smaller, and therefore, even if the door 51 is thin, it can be installed smoothly. That is, a part of the device does not protrude from the back side of the door 51 and become an obstruction.

[Effects of the invention] According to the invention, in particular, the mechanism for supporting the knob relative to the base and preventing it from coming off is formed on the legs protruding from the rear end of the outer peripheral surface of the knob and the inner peripheral surface of the base. Since it consists of a locking part and a guide groove in which the legs are slidably engaged, the overall length of the device can be made small, especially in the direction of the protrusion and retraction of the knob, and therefore, when the door of furniture is thin. Also, since the guide groove is spirally inclined, rotational force is generated even when pushing the end of the knob, and the axial force is evenly distributed. This allows the knob to operate reliably without tilting, which also allows the legs to be shortened.
It becomes possible to further reduce the length and size of the device.

[Brief description of the drawings]

Fig. 1 is an exploded perspective view showing one embodiment of the furniture picking device of the present invention, Fig. 2 is a cross-sectional view taken from the side in Fig. 3, Fig. 3 is a rear view, and Fig. 4 is a heart shape thereof. FIG. 3 is a front view of the cam groove of FIG. DESCRIPTION OF SYMBOLS 1... Base body, 2... Front opening, 3... Base body, 4... Housing body, 12... Guide groove,
13...Locking part, 14...Guide protrusion, 21...
Pinch body, 23... Leg, 31... Slider, 32
... Fitting hole, 35 ... Cam groove, 41 ... Spring, 42 ... Crank pin, 45 ... Retraction mechanism,
51...Door as a movable piece of furniture.

Claims (1)

[Scope of Claim for Utility Model Registration] A base body formed into a substantially cylindrical box shape with an open front face by a base body and a housing body connected to the front side of the base body, and embedded in a movable body of furniture; a knob formed in the shape of a cylindrical box and slidably fitted into the base with the same axial direction, and accommodated and protruded through the front opening thereof; and a knob that rotates in the circumferential direction within the knob. a slider that is freely provided; a spring that is provided from the inside of the base body to the inside of the knob body and biases the knob body in the protruding direction; a protruding and retracting mechanism that protrudes by pushing in, a plurality of legs protruding from the rear end of the outer peripheral surface of the knob body, and extending from the rear end to the front end of the inner peripheral surface of the base body and locking the front end. A guide groove is formed in which the legs are slidably engaged with each other to support the knob body back and forth and prevent it from coming off, and a substantially prismatic guide projection extending in the axial direction is provided at the center of the base body. and a fitting hole that is slidably fitted to the guide protrusion is formed in the slider, and the protruding and retracting mechanism includes a crank pin that is swingably supported by the base body and a fitting hole that is formed on a side surface of the slider. and a heart-shaped cam groove in which the crank pin is slidably engaged, and the guide groove has at least a front side inclined spirally with respect to the axial direction of the base body. picking device.