JP2545396Y2 - Faucet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water faucet, and more particularly, to a water faucet in which an arm member connects a water faucet body and a water spout, and the arm member is freely bendable by a rotary joint. About.

[0002]

2. Description of the Related Art Conventionally, this type of faucet has been disclosed in Japanese Unexamined Utility Model Publication No.
No. 9664. This water faucet is configured so that a pivot joint is provided at two places in the middle of the above-mentioned arm member, whereby the position of the spout, which is a water spout, and the water spouting direction can be changed.

[0003] In the above-mentioned rotary joint, a joint member attached to a base-side arm in contact with the joint and a joint member attached to a distal-side arm are rotatably joined via a rotary shaft. Further, the above-mentioned rotary joint embeds a sphere which is resiliently pressed by a spring inside one of the joint members, and this sphere is formed in a plurality of recesses formed at intervals on the same circumference on the joint surface of the other joint. It is provided with a holding mechanism configured to be elastically fitted with the holding mechanism. Thus, the connecting portion of the arm can be turned by a predetermined angle, and the holding mechanism can hold the state of the arm at each turning position at that time.

[0004]

However, in the above-described spigot pivot joint, since the sphere is pressed against the concave hole on the pivot circumference, the spout's own weight is ensured. However, there is a disadvantage that the joint portion of the arm is inevitably increased in size when it is to be held at the bent portion of the arm.

Therefore, the applicant of the present application has constructed the above-mentioned holding mechanism by engaging two ratchets formed in a ring shape with elastic force by an elastic body, thereby realizing the miniaturization of the rotary joint. . However, as described above, the holding mechanism for the rotating joint is formed in a ring shape.
When it is composed of two ratchets, every time the rotating joint of the arm is rotated to adjust the position of the spout, a metal sound that the engagement position of both ratchets shifts sounds, and the spout position is frequently moved and operated. In the kitchen, the operation sound was unpleasant.

The present invention is directed to a faucet as described above, in which the holding mechanism of the rotating joint is constituted by two ratchets formed in a ring shape, so that the size of the rotating joint can be reduced and, at the same time, the ring-shaped ratchet can be achieved. An object of the present invention is to provide a function of absorbing vibration generated when the teeth are displaced from each other, and to reduce an operation sound when rotating the arm.

[0007]

In order to solve the above-mentioned problems, a spout of the present invention is provided by connecting an arm provided with a water passage therein between a spout main body and a spout, and at one position of the arm. In the water faucet configured so as to be freely bent by providing a rotating joint as described above, the rotating joint includes a proximal joint member attached to the proximal arm member and a distal joint member attached to the distal arm member. And the two shaft members are rotatably connected by fitting a hollow shaft fixed to one of the shaft members to the other shaft member, and the arm members are connected to each other through the hollow portion of the hollow shaft. And a ring-shaped first ratchet which is attached to and fixed to the other joint member described above, and is fitted so as to be slidable in the axial direction in a state where rotation is prohibited with respect to the outer periphery of the hollow shaft. Ring-shaped second la The tooth surfaces provided on the respective mating surfaces with the abutment are brought into contact with each other, and are engaged with each other by the elastic force of an elastic body applied from behind the second ratchet. A vibration absorbing material for vibration absorption is interposed on the fixed surface.

[0008]

According to the above-mentioned means, in the pivot joint of the arm, the proximal joint member and the distal joint member are rotatably connected via the rotating shaft.

The first ratchet, which is attached to and fixed to the other joint member, and the second ratchet, which is fitted on the outer periphery of the rotary shaft, are in a state where the tooth surfaces provided on the mating surfaces of the two ratchets abut each other. is there. The second ratchet is fitted to the outer periphery of the hollow shaft so as to be slidable in the axial direction in a state of prohibiting rotation, and the second ratchet is placed on the first ratchet by elastic pressure of an elastic body applied from behind. It is urged toward the ratchet, and the tooth surfaces of both ratchets mesh with this urging force.

[0010] Therefore, the pivot joint of the arm is formed by the first and second ratchets meshing with each other through the elastic force of the elastic body as described above, so that the proximal joint member and the distal joint member are connected to each other. The displacement in the rotation direction between the arms is prevented, whereby the water outlet at the tip of the arm is held at a desired position.

When the pivot joint of the arm is rotated against the elastic force of the elastic body, the meshing position between the first and second ratchets is shifted, and the arm is bent from the pivot joint portion. And the spout is held in the new position.

As described above, when the pivot joint of the arm is rotated, the second ratchet is retracted against the elastic body, and the teeth of both ratchets are shifted one by one, and a new tooth position is set. Mesh. At this time, the tooth surfaces of the two ratchets come into contact with each other while jumping over the step due to the tooth shape, and generate vibrations and stresses. However, these are elastically deformed by the cushioning material interposed between the back surface of the first ratchet and the other joint member. Is absorbed by

[0013]

As described above, according to the present invention, the ring-shaped first and second ratchets are meshed with each other by the elastic force of the elastic body to form the rotary joint of the arm and the first ratchet described above. A cushioning member for absorbing vibration is interposed between the back surface and the other joint member, thereby reducing the size of the pivot joint of the arm and simultaneously engaging the first and second ratchets. Vibration and stress generated when the arm is displaced are absorbed by the cushioning material, and the operation sound generated when the arm is rotated can be effectively reduced.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The faucet shown in FIGS. 1 to 3 communicates between a faucet body 1 attached and fixed on a counter B and a spout 2 by a relatively long pipe-shaped arm 3,
By providing rotating joints 4 and 5 at two intermediate portions of the arm 3, the arm 3 can be bent so that the position of the water outlet 2 can be freely variably operated.

The faucet main body 1 is a single-lever type hot / cold water mixing tap, and mixes hot water and water supplied from a hot water supply pipe 11 and a hot water supply pipe 12 connected to a water supply source and a hot water supply source at a desired ratio. Then, the mixed water is supplied to the water discharge port 2 through the water channel a in the arm 3. The faucet body 1
By turning the handle lever 13 provided on the side of the paulownia body to the left and right, water discharge and water stoppage, and flow rate adjustment are performed,
Further, the temperature of the mixed water is adjusted by rotating back and forth.

The pipe-shaped arms 3 are 3a, 3
b, 3c, and three members. The base end and the central arm members 3a, 3b are connected via a pivot joint 4, and the central and distal arm members 3b, 3c connect the pivot joint 5 to the pivot arm. Connected through.

The above-mentioned base arm member 3a is connected to the upper part of the spout main body 1 via a ball joint structure b. In the ball joint structure b, bearing members 32a and 32b that receive the ball shaft 33 are fitted inside a sleeve body 31 that is screwed into the upper part of the water faucet main body 1, and the inner periphery of the two bearing members 32a and 32b is fitted. The ball portions 33a of the ball shaft 33 are received from above and below by the formed receiving surfaces 32a 'and 32b'.

The bearing member 32a and the sleeve 3
A spring 34 is elastically mounted between the base member 1 and the bottom surface thereof, and the ball portion 33a of the ball shaft 33 is sandwiched between the two bearing members 32a and 32b through packing using the elastic force. While maintaining the sealing performance, it is rotatably supported while exhibiting the required holding force.

Therefore, by connecting the base end of the arm 3 to the water faucet body 1 via the above-mentioned hole joint structure b, the arm 3 can be freely rotated and held at an arbitrary position. Become.

On the other hand, the water outlet 2 is rotatably fitted to and connected to the distal arm member 3c via a connection joint 15, whereby the water outlet 2 is connected to the axis of the distal arm member 3c by a rotating shaft. It is designed to swing. The water outlet 2 is one that can switch between normal water discharge and shower water discharge by rotating the knob 2a on the head.

The rotary joints 4, 5 provided on the arm 3 are three members 3a, 3b, 3c constituting the arm 3 as described above.
Are rotatably connected to each other so that the arm 3 can be bent from two intermediate portions, and the two pivot joints determine the rotation direction of the center arm member 3b and the tip arm member 3c. The rotating shaft cores 4c and 5c of the fourth and fifth members are configured to extend horizontally in the same direction.

The rotary joints 4 and 5 have the same structure. Next, the structure will be described based on the pivot joint 4 shown in FIGS.

The pivot joint 4 joins a joint member 4a connected and fixed to the base arm member 3a and a joint member 4b connected and fixed to the base end of the central arm member 3b. A hollow shaft 6 serving as a rotary shaft is inserted between the rotary shafts 4b to be rotatable. Also, both joint members 4a, 4b
A dome-shaped cap 26 is screwed to the ends of the bearing portions 4a '' and 4b '' to cover the internal structure of the rotary joint 4.

The two joint members 4a, 4b have substantially the same outer shape as the members, and are provided with fitting portions 4a ', 4b' fitted to the arm members 3a, 3b and a bearing portion 4 fitted with the hollow shaft 6.
a '' and 4b '' are integrally formed, and the inner hollow portion is used as a water channel.

The two connecting members 4a and 4b are
The joints a ″ and 4b ″ are joined in a state where they abut with each other, and the hollow shaft 6 is inserted through a packing 7 into a concentric bearing hole to be rotatably connected. . The hollow shaft 6 described above has a chamfered portion cut in parallel with the outer periphery of the flange portion 6c of the coaxial portion 6 in the bearing portion 4b on the joint member 4b side.
By being fitted between the notch end faces 27 formed with a predetermined width at b ″, it is non-rotatably fixed to the joint member 4b.

The hollow shaft 6 has a through hole 6a in the outer peripheral portion corresponding to the water channel in the joint members 4a, 4b, and has one end of the hollow portion closed by a partition 6b and the other end closed by a plug lid 10. As a result, the water channel a in the base arm member 3a and the water channel a in the central arm member 3b communicate with each other via the hollow portion of the hollow shaft 6.

At one end of the joint member 4a and the hollow shaft 6, a first ratchet 8 and a second ratchet 9 meshing with each other are provided. As shown in FIG. 5, the first ratchet 8 has a toothed surface 8a formed on one surface of a ring body, and a cushioning material 17 is provided in a concave portion 21 formed at the outer end of the bearing 4a '' of the joint member 4a. The flange 8b provided on the outer peripheral portion is
By being stopped, it is attached and fixed to the joint member 4a. The first ratchet 8 and the hollow shaft 6
Is in a loosely fitted state (FIG. 5).

As described above, the cushioning member 1 interposed between the back surface of the first ratchet 8 and the bottom surface of the concave portion 21 of the joint member 4a.
Reference numeral 7 denotes a packing having elasticity such as rubber or soft synthetic resin. When the above-mentioned first techet 8 is fixed to the joint member 4a with a screw 22, the elastic member 17 is tightened so as to be appropriately compressed. It is. This allows
The first ratchet 8 is attached and fixed to the joint member 4a so as not to cause useless rattling, and at the same time, when the vibration or load force applied from the tooth surface 8a side of the first ratchet 8 is applied, The cushioning material 17 is absorbed by being elastically deformed.

The second ratchet 9 has a substantially cylindrical shape. A tooth surface 9a meshing with the first ratchet 8 is provided around the end surface of the second ratchet 9 and a spline 9b is formed on the inner peripheral surface. Is coupled to a spline groove 6d formed on the outer periphery of one end of the hollow shaft 6 (FIG. 4).

Therefore, the second ratchet 9 is supported on the outer periphery of the one end of the hollow shaft 6 so as to be slidable in the axial direction in a state where rotation is prohibited, and by this sliding, the first and second ratchets 8 facing each other. Tooth surfaces 8a and 9a mesh with each other or move away from each other.

A spring 25 is elastically mounted in a compressed state between the holding screw 23 screwed to one end of the hollow shaft 6 and the back side of the tooth surface 9 a of the second ratchet 9. The ratchet 9 is constantly urged against the first ratchet 8 with a constant elastic force, and the first and second ratchets 8 and 9 mesh with this urging force.

Therefore, the rotary joints 4 and 5 of the arm 3 configured as described above are engaged with the joint member 4a by the first and second ratchets 8 and 9 meshing with each other through the elastic force of the spring 25. The rotation between the joint member 4b and the joint member 4b is braked within a certain load range, so that both the joints 4, 5 can support the weight of the spout 2 and the like, and can be held at a desired position.

As described above, the rotary joints 4 and 5 secure the holding force at the joints 4 and 5 by engaging the first and second ratchets 8 and 9 with the urging force of the spring 25. As a result, the size of the rotary joints 4 and 5, especially in the diametrical direction, is significantly increased while securing sufficient holding force in the rotary joints 4 and 5, as compared with the conventional one. The size can be reduced.

When the rotary joints 4 and 5 of the arm 3 are rotated against the pressure of the spring 25, the first,
The tooth position between the second ratchets 8 and 9 is shifted and the arm 3
Is bent from the pivot joints 4 and 5, and the water outlet 2 is held at a new position. As described above, when the rotary joint 4b of the arm 3 is rotated, the second ratchet 9 retreats against the spring, and the teeth of the two ratchets 8 and 9 are shifted one by one, resulting in a new tooth. Mesh at the mating position. At this time, the tooth surfaces of the two ratchets 8 and 9 come into contact with each other while jumping over the step due to the tooth shape, and generate vibrations and stresses. These vibrations and stresses are generated by the cushioning material 17 interposed between the back surface of the first ratchet 8 and the joint member 4b. Is effectively absorbed by the elastic deformation, whereby the metal noise caused by the rotational contact between the ratchets 8 and 9 can be greatly reduced.

According to the water faucet constructed as described above, the tip of the arm 3 is turned up and down from the turning joint 4,
Further, the tip of the rotary joint 5 is similarly supported so as to be vertically rotatable, and the free rotation by the ball joint structure b at the base end of the arm 3 and the swinging rotation of the water outlet 2 are matched with this. Thus, the position of the water discharge port 2 and the water discharge direction can be freely and variably adjusted.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a faucet embodying the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a sectional view taken along line CC in FIG. 2;

FIG. 5 is a sectional view taken along line DD in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet body 2 Outlet 3 Arm 4a Joint member (base end joint member) 4b Joint member (distal end joint member) 4,5 Rotation joint 6 Hollow shaft 8,9 Ratchet 8a, 9a Tooth surface 17 Buffer material 25 Spring (elastic body)

Claims (1)

(57) [Scope of request for utility model registration] 1. A water faucet in which a water faucet main body and a water spout are connected by an arm provided with a water passage therein, and a pivot joint is provided at one or more positions of the arm so as to be freely bent. The dynamic joint is formed by fitting a proximal joint member attached to a proximal arm member and a distal joint member attached to a distal arm member to a hollow shaft fixed to one of the joint members to the other joint member. By connecting the two joint members to each other so as to be rotatable, and connecting the water channel between the arm members through the hollow portion of the hollow shaft, and a ring-shaped member attached and fixed to the other joint member described above. First
A ratchet and a ring-shaped second member which is fitted so as to be slidable in the axial direction while rotation is prohibited with respect to the outer periphery of the hollow shaft.
The tooth surfaces provided on the respective mating surfaces with the ratchet are abutted against each other, and meshed with the elastic force of the elastic body applied from behind the second ratchet, so that the tooth between the back surface of the first ratchet and the other joint member is formed. A faucet with a vibration absorbing material on the fixed surface.