JP6502156B2 - Screw device - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a screw device for attaching to a mating member such as a water jacket via a screw structure.

  A screw structure is widely used to connect other articles such as a water supply pipe and the like to a watering article such as a toilet bowl and a faucet. In the case of using a screw structure, it is important to manage torque for attaching a screw component to be tightened with an appropriate torque to a screw portion on a mating member side to be attached. Conventionally, in order to facilitate this torque management, there has been proposed a screw device having a structure capable of idling in response to externally applied torque (see Patent Document 1).

  The screw device of Patent Document 1 includes, in addition to the screw component, a tubular transmission component disposed on the outer peripheral side of the screw component. In this screw device, when torque is externally applied to the transmission component, torque is transmitted from the transmission component to the screw component when the torque is less than the appropriate torque. On the other hand, when the appropriate torque is exceeded, the transmission component elastically deforms so as to expand in diameter, and the transmission component can idle with respect to the screw component. As a result, even if the worker does not know the proper torque, the threaded part can be attached with the proper torque by rotating the transmission part until it slips.

Unexamined-Japanese-Patent No. 2000-144865

  By the way, in the screw apparatus of patent document 1, the transmission component is arrange | positioned at the outer peripheral side of screw components, and the outside diameter size of the whole apparatus is large by that much. Further, at the time of idle rotation of the transmission part, since the elastic deformation is performed so that the outer diameter of the entire transmission part becomes large, the outer diameter dimension of the entire device is further enlarged. When the outer diameter is large, it becomes easy for the surrounding structure to come into contact with the hand or tool when tightening or loosening the screw part while holding the transmission part with the hand or tool. In particular, this type of screw device may be located in a narrow, recessed space when attached to a water carrier. In this case, the improvement is desired because the surrounding structures and the hands and tools become more easily hit.

  This invention is made in view of such a subject, The objective is to provide the technique which can miniaturize the outer-diameter dimension of the whole apparatus regarding the screw apparatus of a structure which can be idled.

In order to solve the above problems, a screw device according to an aspect of the present invention is provided with a screw component for attaching to a mating member via a screw structure, and one of the screw components in the axial direction of the screw component. An operation part for operating when rotating the screw part, a first state in which torque can be transmitted from the operation part to the screw part, and a second state in which the operation part can idle on the screw part The torque transmission mechanism is formed on each of a pair of opposing surfaces facing in the axial direction of the screw component and the operation component, and can transmit torque by circumferentially engaging each other It has separate engagement parts.
According to this aspect, with respect to the screw device of the idleable structure, the outer diameter dimension of the entire screw device can be made smaller than that in the case where the engaging portion constituting the torque transmission mechanism is formed on the outer peripheral surface of the screw component and the operation component.

In the above aspect, when the torque transfer mechanism switches from the first state to the second state, the separate engagement portions are relatively displaced so as to be axially separated, and the separate engagement portions are separated. And may be provided with an elastically deformable biasing portion in the axial direction when relatively displaced.
According to this aspect, when the first state is switched to the second state, the biasing portion can apply a biasing force for returning the separate engaging portions from the circumferentially inaccessible position to the engageable position. In addition, when the operating component is idled with respect to the screw component, the biasing portion is unlikely to be elastically deformed so as to expand radially outward, so that the change of the outer diameter dimension at the time of the idle rotation can be suppressed.

In the foregoing aspect, the biasing portion may be a leaf spring.
When rotating the operating part relative to the threaded part, in order to transmit a large torque from the operating part to the threaded part via the separate engagement parts, the first state should not be switched immediately to the second state, It is necessary to apply a greater biasing force to the biasing portion. Here, if the biasing portion is a plate spring, a large biasing force can be applied while reducing the amount of deformation in the axial direction, rather than using a coil spring. Therefore, according to this aspect, while transmitting a large torque to the screw component, the overall size can be reduced by suppressing the dimension of the screw device in the axial direction.

In the above aspect, the screw component and the operation component may be configured such that the torque transmission portion including the engagement portion is made of a hard material.
According to this aspect, a large torque is transmitted from the operation component to the screw component because the torque transmission portion is less likely to be elastically deformed than a part of the torque transmission portion that transmits torque from the operation component to the screw component is an elastic body. It will be easier.
Here, the torque transmission portion refers to a portion that becomes a path for transmitting torque from the operation component to the screw component when a rotational force is applied to the operation component.

  According to the present invention, the outer diameter of the entire device can be reduced with respect to the screw device of the idleable structure.

It is a perspective view of the toilet bowl device in which the screw device concerning a 1st embodiment is used. It is side surface sectional drawing which shows the connection state of the screw apparatus and 1st Embodiment which concern on 1st Embodiment. It is a front sectional view of a screw device concerning a 1st embodiment. It is a front view of a screw device concerning a 1st embodiment. It is an exploded perspective view of a screw device concerning a 1st embodiment. Fig.6 (a) is a figure which expands and shows a part of FIG. 4, FIG.6 (b) is a figure which shows the screw components seen from arrow Vd1 of Fig.6 (a). It is a figure which shows range Sa of FIG. 4 roughly. It is a figure when the torque transmission mechanism of the screw apparatus concerning 1st Embodiment exists in a torque transmission state. It is a figure when the torque transmission mechanism of the screw apparatus concerning 1st Embodiment is idle. It is a figure when rotating the operation component of the screw apparatus which concerns on 1st Embodiment in the screw loosening direction. It is a perspective view of the operation component which concerns on 1st Embodiment. It is a disassembled perspective view of the operation component which concerns on 1st Embodiment. It is a front view of the screw device concerning a 2nd embodiment. It is a perspective view of the operation component which concerns on 2nd Embodiment. It is a front view of the screw device concerning a 3rd embodiment. It is a perspective view of the operation component which concerns on 3rd Embodiment. Fig.17 (a) is a block diagram which represented a part of screw apparatus which concerns on 1st Embodiment with a functional block, FIG.17 (b) is a block which represented a part of screw apparatus which concerns on a modification with a functional block. FIG.

  Hereinafter, in each embodiment and modification, the same numerals are given to the same component, and the overlapping explanation is omitted. Moreover, in each drawing, a part of component is suitably abbreviate | omitted for the facilities of description.

First Embodiment
FIG. 1 is a perspective view of a toilet bowl device 12 in which a screw device 10 according to a first embodiment is used.
The toilet bowl device 12 includes a Western-style toilet bowl 14 installed in the toilet room and a toilet seat device 16 installed on the toilet bowl 14. The toilet seat device 16 includes a box 18 installed at the rear of the toilet bowl 14, and a toilet lid 20 and a toilet seat 22 rotatably supported on the box 18 in the vertical direction. The screw device 10 is used to connect a first water supply pipe 24 to which water is supplied from a water supply source and a branch plug 26 (not shown in the figure) disposed in the box 18.

FIG. 2 is a side sectional view showing a connected state of the screw device 10 and the branch plug 26. As shown in FIG.
The branch plug 26 is formed with a water channel 26 a for branching the water sent from the first water supply pipe 24 and guiding the water to the separate second water supply pipes 28. In the figure, the water flow direction P1 in the branch plug 26 is indicated by a broken line. Water is led from a separate second water supply pipe 28 to a water storage tank (not shown) and a local cleaning device (not shown) arranged in the box 18.

FIG. 3 is an enlarged view of FIG. 2 and mainly shows a front sectional view of the screw device 10.
A cylindrical attachment portion 26 b is formed on the branch plug 26, and an external thread to be the mating screw portion 26 c is formed on the outer peripheral portion of the attachment portion 26 b. The screw device 10 is attached to the attachment portion 26b of the branch plug 26 via a screw structure, which will be described in detail later.

FIG. 4 is a front view of the screw device 10, and FIG. 5 is an exploded perspective view of the screw device 10. As shown in FIG.
As shown in FIGS. 3 to 5, the screw device 10 mainly has a cylindrical screw component 30 to be attached to the branch plug 26 and one of the axial directions X of the screw component 30 with respect to the screw component 30 (in FIG. And a cylindrical operation component 32 disposed in series. The operation component 32 is for operating when rotating the screw component 30. The screw device 10 has a cylindrical inner part 34 inserted into the screw part 30 and the operation part 32, and a torque transmission mechanism 40 for transmitting the torque received by the operation part 32 to the screw part 30 (FIG. 4). See). In the present embodiment, the torque transfer mechanism 40 will be mainly described, but the peripheral structure will be described first.

  The inner part 34 has a role of rotatably holding the screw part 30 and the operation part 32 and integrating the two parts, which will be described in detail later. Further, as shown in FIG. 3, the inner part 34 serves as a socket part that connects the branch plug 26 and the first water supply pipe 24 and communicates the water in the branch plug 26 and the first water supply pipe 24. . The inner part 34 functions as a socket part, so a water passage 34a is formed therein.

  The screw part 30 is provided with the cylindrical part 30a and the 1st transmission part 30b provided in the edge part of the screw part 30 which faces the operation component 32, as shown in FIGS. 3-5. At the inner peripheral portion of the cylindrical portion 30a, a female screw to be the device-side screw portion 30c is formed. The first transmission portion 30 b is a portion to which the torque applied to the operation component 32 is transmitted through the first engaging portion 42 and the second engaging portion 44 described later, and receives the transmitted torque. It can rotate integrally with the side screw portion 30c. In the screw component 30, each of the first transmission portion 30b and the device-side screw portion 30c is a part of the same member.

  As shown in FIG. 3, the cylindrical portion 30 a is provided with an insertion port 30 d at an opening end opposite to the operation component 32. The attachment portion 26b of the branch plug 26 is inserted from the insertion port 30d of the cylindrical portion 30a, and the mating screw portion 26c serving as an external thread of the mounting portion 26b is screwed into the device side thread portion 30c serving as an internal thread of the cylindrical portion 30a. . The screw part 30 is rotated in one direction Pa (clockwise in the upper direction in FIG. 3) around the axial direction X in a state in which the mating side screw portion 26c of the branch plug 26 is screwed into the device side screw portion 30c. It is tightened when it is turned and loosened when it is turned in the other direction Pb (counterclockwise direction toward the upper side in FIG. 3). Hereinafter, the direction Pa in which the screw component 30 is tightened is referred to as the screw tightening direction Pa, and the direction Pb in which the screw component 30 is loosened is referred to as the screw loosening direction Pb.

  As shown in FIGS. 3 to 5, the operation component 32 is an operation unit 32 a that is directly operated when the screw component 30 is rotated, and a second transmission provided at an end of the operation component 32 facing the screw component 30. And a unit 32b. The second transmission portion 32b is a portion that can rotate integrally with the operation portion 32a by receiving a torque applied to the operation portion 32a, and a first engagement portion 42 and a second engagement portion described later by receiving the torque. Torque can be transmitted to the threaded part 30 via 44. In the operation component 32, the operation unit 32a and the second transmission unit 32b are separate members.

  The operation portion 32a is a cylindrical member, and the outer peripheral surface thereof is formed in a decagon shape, that is, a polygonal shape, in order to be easily grasped and turned by a hand, a tool or the like. The 2nd transmission part 32b is a cylindrical member. The second transmission portion 32b is rotatably coupled integrally with the operation portion 32a by a guide mechanism (not shown) described later, and is slidably guided in the axial direction X with respect to the operation portion 32a.

Fig.6 (a) is a figure which expands and shows a part of FIG. 4, FIG.6 (b) is a figure which shows the screw components 30 seen from arrow Vd1 of Fig.6 (a).
The screw component 30 and the operation component 32 are provided with a pair of opposed surfaces 38 opposed in the axial direction X. The opposite surface 38 of the screw component 30 is formed on the end face of the first transmission portion 30 b, and the opposite surface 38 of the operation part 32 is formed on the end surface of the second transmission portion 32 b. The opposing surface 38 of each of the parts 30, 32 is annularly formed.

  The torque transfer mechanism 40 described above has separate engagement portions 42, 44 formed on each of the screw component 30 and the pair of opposed surfaces 38 of the operation component 32. Specifically, the torque transfer mechanism 40 includes a plurality of first engaging portions 42 formed on the opposing surface 38 of the screw component 30 and a plurality of second engaging portions 44 formed on the opposing surface 38 of the operation component 32. (See also FIG. 5). In FIG. 6B, the position of the second engagement portion 44 is indicated by a two-dot chain line. Each engaging portion 42, 44 protrudes toward the other opposing surface 38 opposed in the axial direction X, and a flat end surface 46 is formed at the tip end thereof so as to be orthogonal to the axial direction X. The respective engaging portions 42, 44 can transmit torque by circumferentially engaging each other.

  A total of twelve first engaging portions 42 are disposed at positions shifted approximately equiangularly to the facing surface 38 of the screw component 30. A total of three second engaging portions 44 are disposed at positions substantially equiangularly offset from the facing surface 38 of the operation component 32. The second engagement portion 44 is disposed between the plurality of first engagement portions 42, and the first engagement portion 42 and the second engagement portion 44 can be engaged with each other.

FIG. 7 schematically shows the range Sa of FIG. In this figure, it is also a figure which looked at range Sb of Drawing 6 (b) from arrow Vd2.
In the torque transfer mechanism 40, when the operating component 32 is rotated in the screw tightening direction Pa, the torque transmitting state in which torque can be transmitted from the operating component 32 to the screw component 30, and the operating component 32 with respect to the screw component 30 It is possible to take an idle state, that is, a relative rotatable idle state. The torque transfer mechanism 40 can switch from the torque transfer state to the idle state according to the torque applied to the operation component 32.

  In order to realize this, the first engaging portion 42 and the second engaging portion 44 screw-fasten the first side wall surfaces 42a and 44a which are engaged with each other when the operation component 32 is rotated in the screw-fastening direction Pa. It is formed to be inclined with respect to the direction Pa. When the operation component 32 is rotated in the screw tightening direction Pa, this inclination angle is engaged with each other along the axial direction X by the second engagement portion 44 sliding along the first engagement portion 42. The parts 42 and 44 are set to be guided away.

  In addition, in order to hold the torque transmission state until the predetermined torque Ts [N · m] is applied, the torque transmission mechanism 40 is biased as a separate member disposed between the operation portion 32a and the second transmission portion 32b. It further has a portion 36 (see also FIGS. 4 and 5). The biasing portion 36 is a leaf spring, which will be described in detail later, and is an elastic body such as rubber. The biasing portion 36 is disposed at a position overlapping the screw component 30 and the operation component 32 in the axial direction X. The biasing portion 36 applies a biasing force Fb in a direction in which the pair of facing surfaces 38 are brought closer to the second transmission portion 32 b of the operation component 32.

  Thus, as shown in FIG. 8, when the operation component 32 is rotated in the screw tightening direction Pa, the torque transmission mechanism 40 can slide the engaging portions 42 and 44 against the biasing force Fb described above. The torque transmission state is established until the torque Ts is given. At this time, the torque Ta applied to the operation component 32 is transmitted as the torque Ta of the screw component 30 when the first side wall surfaces 42a and 44a of the engagement portions 42 and 44 circumferentially engage with each other. .

  On the other hand, as shown in FIG. 9A, the torque Tb exceeds the torque Ts that makes the second engagement portion 44 slideable along the first engagement portion 42 against the biasing force Fb described above. When it is given, it becomes idle. The torque Ts is mainly set by the adjustment of the biasing force Fb of the biasing unit 36. At this time, first, the first side wall surface 44a of the second engaging portion 44 slides in the direction Pc along the first side wall surface 42a of the first engaging portion 42, whereby the operating component 32 relative to the screw component 30 is obtained. , And the engagement portions 42, 44 are displaced relative to each other in the axial direction X while being idle. At this time, the biasing portion 36 is elastically deformed so as to contract in the axial direction X, and the biasing force Fb applied from the biasing portion 36 to the second transmission portion 32 b is increased. Thereafter, as shown in FIG. 9B, the distal end surface 46 of the second engaging portion 44 slides in the direction Pd along the distal end surface 46 of the first engaging portion 42, whereby As a result, the operation component 32 idles. At this time, the biasing portion 36 is not elastically deformed, and the biasing force Fb applied from the biasing portion 36 to the second transmission portion 32 b remains constant.

  Returning to FIG. 7, the torque transfer mechanism 40 is also a ratchet mechanism that limits the relative rotational direction of the operation component 32 to the screw component 30 in the screwing direction Pa. The torque transmission mechanism 40 as a ratchet mechanism makes the operation component 32 non-rotatable relative to the screw component 30 when the operation component 32 is rotated in the screw loosening direction Pb.

  In order to realize this, the first engaging portion 42 and the second engaging portion 44 engage with each other when the second side wall surfaces 42b and 44b engage with each other when the operation component 32 is rotated in the unscrewing direction Pb. It is formed to be orthogonal to the direction Pb. Thereby, as shown in FIG. 10, when the operation component 32 is rotated in the screw loosening direction Pb, even if torque Ts equal to or greater than torque Ts is applied to the operation component 32, the second When the side wall surfaces 42b and 44b engage with each other in the circumferential direction, the screw component 30 is transmitted as the torque Tc in the same direction Pb. Therefore, even when the screw part 30 is sufficiently tightened on the branch plug 26, transmitting the large torque in the screw loosening direction Pb from the operation part 32 to the screw part 30 makes it easy to remove the screw part 30 from the branch plug 26.

The operation in the case where the screw component 30 of the screw device 10 described above is attached to the mating screw 26 c (see FIG. 3) of the fork plug 26 will be described.
When the operation part 32 is rotated in the screw tightening direction Pa when the tightening amount of the screw part 30 is small, as shown in FIG. 8, the torque in the small screw tightening direction Pa of the above-mentioned torque Ts is reduced. Ta is given. At this time, the torque transfer mechanism 40 is in a torque transfer state, and the torque Ta of the operation component 32 is transferred to the screw component 30 as the torque Ta.

  When the tightening amount of the screw component 30 increases and a torque Tb exceeding the torque Ts is applied to the operation component 32, the torque transfer mechanism 40 switches from the torque transfer state to the idle state. At this time, as described above, after the second engagement portion 44 slides in the direction Pc (see FIG. 9A) along the first engagement portion 42, in the direction Pd (see FIG. 9B). By sliding, the operating component 32 idles relative to the screw component 30.

  When the distal end surfaces 46 of the respective engaging portions 42 and 44 slide in the direction Pd until the contact with each other is released, the biasing force of the biasing portion 36 causes the pair of opposing surfaces 38 to approach with respect to the screw component 30 The operating component 32 is relatively displaced in the axial direction X. The relative displacement here is performed such that the second engagement portion 44 is disposed between the plurality of first engagement portions 42. As a result, the separate engagement portions 42, 44 are returned from the circumferentially non-engageable position to the engageable position. At this time, when the pair of facing surfaces 38 contact with each other vigorously, the user can hear that the operation component 32 is idle with respect to the screw component 30.

The effect by the above screw apparatus 10 is demonstrated.
In the screw device 10, engaging portions 42 and 44 constituting the torque transfer mechanism 40 are formed on the screw component 30 and the pair of opposing surfaces 38 of the operation component 32, respectively. Therefore, with respect to the screw device 10 having a structure capable of idling, the overall outer diameter size of the screw device 10 is smaller than when the engaging portion that constitutes the torque transmission mechanism 40 is formed on the outer peripheral surface of the screw component 30 and the operation component 32. it can. As a result, when rotating the operation portion 32a of the operation component 32 while holding it with a hand or a tool, the hand or the tool hardly interferes with the structure around the screw device 10. Therefore, even when working while reaching for a narrow space such as the back side of the toilet bowl 14, it becomes easy to work with less interference with surrounding structures.

  Further, the torque transfer mechanism 40 includes an urging portion 36 which can be elastically deformed in the axial direction X when the pair of opposing surfaces 38 are relatively displaced to be separated. Therefore, when switching from the torque transmission state to the idle state, biasing force can be applied by the biasing portion 36 for returning the separate engaging portions 42, 44 from the position where they can not be engaged in the circumferential direction to the position where they can be engaged. In addition, when the operating component 32 idles with respect to the screw component 30, the biasing portion 36 is unlikely to be elastically deformed so as to expand radially outward, so that the change of the outer diameter size at the time of idle rotation can be suppressed. Therefore, even when the operating component 32 idles with respect to the screw component 30, it becomes difficult for the hand or tool rotating the operating component 32 to interfere with surrounding structures.

  Further, since the biasing portion 36 is a plate spring, the following advantages can be obtained. In order to transmit a large torque from the operation part 32 to the screw part 30 via the separate engaging parts 42 and 44 when the operation part 32 is rotated in the screw tightening direction Pa, the torque transmission state is immediately changed to the idle state. It is necessary to apply a greater biasing force to the biasing unit 36 so as not to switch to the Here, if the biasing portion 36 is a plate spring, a large biasing force can be applied while reducing the amount of deformation in the axial direction X, rather than using a coil spring. Therefore, while the large torque is transmitted to the screw component 30 when the biasing portion 36 is a plate spring, the size of the screw device 10 in the axial direction X can be suppressed to achieve the overall downsizing.

  The torque transmission portion including the above engaging portions 42 and 44 is made of a hard material such as resin harder than the biasing portion 36. The torque transmission portion here is a path for transmitting torque from the operation portion 32a of the operation component 32 to the device-side screw portion 30c of the screw component 30 when a rotational force is applied to the operation portion 32a of the operation component 32. Say the part that In this example, the entire screw component 30 and the entire operation component 32 form a torque transmission portion, and each is formed of a hard material.

  As a result, since the torque transmitting portion is less likely to be elastically deformed than a part of the torque transmitting portion transmitting the torque from the operation component 32 to the screw component 30 is an elastic body, large torque is applied to the screw component 30 from the operation component 32 It becomes easy to transmit.

Next, other features of the screw device 10 will be described.
As shown in FIGS. 3 and 5, the inner part 34 serves to integrate the screw part 30 and the operation part 32, so that the screw part 30 and the operation part 32 are provided in the middle of the inner part 34 in the axial direction X. A support portion 34 b is formed to rotatably support the An outer flange portion 34c is formed on the support portion 34b of the inner part 34, and a retaining ring 34d serving as a stop is attached. The outer flange portion 34 c is formed in an annular shape so as to protrude radially outward on the outer peripheral surface of the inner part 34.

  As shown in FIG. 3, a first supported portion 30 e is formed at an end portion facing the operation component 32 in the cylindrical portion 30 a of the screw component 30. The first supported portion 30e is annularly formed so as to protrude radially inward on the inner peripheral surface of the cylindrical portion 30a. In addition, a second supported portion 32 c is formed at an end portion facing the screw component 30 in the operation portion 32 a of the operation component 32. The support portion 34b of the inner component 34 is rotatably inserted into the supported portions 30e and 32c. The outer flange portion 34c of the inner part 34 is disposed on one side in the axial direction X of the supported portions 30e and 32c, and the retaining ring 34d is disposed on the other. The supported portions 30e and 32c are held between the outer flange portion 34c of the inner part 34 and the retaining ring 34d, whereby the relative position in the axial direction X is maintained. Thereby, the screw part 30 and the operation part 32 are rotatably held with respect to the inner part 34.

FIG. 11 is a perspective view of the operation component 32, and FIG. 12 is an exploded perspective view of the operation component 32. As shown in FIG.
The operation component 32 includes a guide mechanism 48 that rotatably connects the operation unit 32a and the second transmission unit 32b integrally and rotatably guides the second transmission unit 32b in the axial direction with respect to the operation unit 32a. Specifically, the guide mechanism 48 includes a slide convex portion 48a formed on the operation portion 32a and a slide concave portion 48b formed on the second transmission portion 32b.

  A plurality of slide convex parts 48 a of the operation part 32 a are formed on the end face facing the second transmission part 32 b of the operation part 32 a. A total of three slide convex portions 48a are formed on the end face of the operation portion 32a at positions shifted substantially at equal angles. A plurality of slide recesses 48b of the second transmission portion 32b are formed on the inner circumferential surface of the second transmission portion 32b. Each slide concave portion 48b is provided in one-to-one correspondence with each of the plurality of slide convex portions 48a, and a total of three slide concave portions 48b are formed on the inner peripheral surface of the second transmission portion 32b at substantially equiangularly shifted positions. The corresponding slide convex portion 48 a is slidably fitted in the axial direction X in the slide concave portion 48 b. Thus, the operation unit 32a and the second transmission unit 32b are integrally rotatably connected, and the second transmission unit 32b is slidably guided in the axial direction X with respect to the operation unit 32a.

  The biasing portion 36 is a leaf spring formed in an annular shape so that the first convex portion 36 a and the second convex portion 36 b are alternately arranged along the circumferential direction (see also FIG. 4). The first convex portion 36a is formed as a convex curved in one of the axial directions X (lower side in the drawing), and the second convex portion 36b is curved in the other axial direction X (upper side in the drawing) It is formed to be convex. The first convex portion 36 a contacts the operation portion 32 a of the operation component 32, and the second convex portion 36 b contacts the second transmission portion 32 b of the operation component 32.

The urging portion 36, as shown in FIG. 12, at a radially inner side of the first convex portion 36 a, the positioning protrusion 36c is formed to project radially inward. The positioning projection 36c is disposed in a positioning recess 32g formed between the slide projections 48a of the operation portion 32a. The biasing portion 36 is circumferentially positioned with respect to the operation portion 32a by the engagement of the positioning convex portion 36c and the positioning concave portion 32g.

  As shown in FIG. 4, the second convex portion 36 b of the biasing portion 36 is disposed at a position overlapping the second engaging portion 44 of the operation component 32 in the axial direction X. The second convex portion 36 b is in contact with the second transmission portion 32 b of the operation component 32 as described above, and an urging force in the axial direction X is applied to the second transmission portion 32 b from here. Further, in the second engaging portion 44 of the operation component 32, when the operation component 32 slides along the direction Pc (see FIG. 9A) with respect to the screw component 30, the first engagement of the screw component 30 is performed. A reaction force in the axial direction X is applied from the portion 42. That is, the urging force application position where the urging force is applied to the second transmission portion 32 b of the operation component 32 and the reaction force application position where the reaction force is applied overlap in the axial direction X. As a result, the shearing force is less likely to act on the second transmission portion 32b than when the biasing force application position and the reaction force application position are arranged at positions shifted in the circumferential direction, and the durability of the second transmission portion 32b is ensured. It becomes easy to do.

  One end 34 e of the inner part 34 is inserted into the mounting portion 26 b of the fork plug 26 as shown in FIGS. 3 and 5. A seal member 34f such as an O-ring is attached to the outer peripheral surface of one end 34e of the inner part 34, and the seal 34f seals between the mounting portion 26b of the branch plug 26 and the one end 34e of the inner part 34.

  At one end 34e of the inner part 34, a cap 34g is attached for capturing foreign matter such as dust contained in water. Specifically, the cap 34g is formed with a plurality of openings communicating the water passage 26a in the branch plug 26 and the water passage 34a of the inner part 34, and a strainer 34h is attached to cover the plurality of openings. The strainer 34h is a mesh woven by a wire such as a fiber, and foreign matter in the water passing through the opening is captured by the strainer 34h.

Second Embodiment
FIG. 13 is a front view of the screw device 10 according to the second embodiment, and FIG. 14 is a perspective view of the operation component 32. As shown in FIG.
The screw device 10 of the present embodiment is different from the examples of FIGS. 4 and 11 in the configuration of the second transmission portion 32 b of the operation component 32 and the biasing portion 36. The example of FIG. 4, FIG. 11 demonstrated the example which the torque transmission part containing the 2nd transmission part 32b is comprised with a hard raw material. In the present embodiment, the second transmission portion 32b is formed of an elastic body such as rubber.

  Further, on the surface of the second transmission portion 32b opposite to the operation portion 32a, a gap holding portion 32d which protrudes toward the operation portion 32a is formed. The space | interval holding | maintenance part 32d is for hold | maintaining a space | interval with the operation part 32a. A total of three interval holding parts 32d are arranged at positions shifted approximately equiangularly on the surface of the second transmission part 32b facing the operation part 32a.

  The spacer 32 d is disposed between the plurality of second engagement portions 44 in order to elastically deform the arc-shaped portion 32 e including the second engagement portion 44 in the direction Pe along the axial direction X. Ru. Thereby, the operation component 32 slides along the direction Pc (see FIG. 9A) with respect to the screw component 30, and a reaction force in the axial direction X is applied from the first engaging portion 42 of the screw component 30. At this time, the arc-shaped portion 32e including the second engaging portion 44 elastically deforms in the direction Pe away from the first engaging portion 42, and the engaging portions 42 and 44 relatively displace in the same direction Pe. At this time, a biasing force in the direction in which the pair of facing surfaces 38 are brought closer is applied to the arc-shaped portion 32 e. Thus, the arc-shaped portion 32 e including the second engagement portion 44 becomes the biasing portion 36 which applies the biasing force.

  As described above, the entire torque transmission portion including the operation portion 32a of the operation component 32 and the second transmission portion 32b may be formed not by a hard material but by an elastic body. Further, the biasing portion 36 of the torque transfer mechanism 40 may be configured as a part of the same member instead of a separate member from the screw component 30 and the operation component 32.

Third Embodiment
FIG. 15 is a front view of the screw device 10 according to the third embodiment, and FIG. 16 is a perspective view of the operation component 32. As shown in FIG.
The screw device 10 of the present embodiment is different from the examples of FIGS. 4 and 11 in the configuration of the operation component 32. In the example of FIG. 4 and FIG. 11, the example in which each of the operation part 32a and the 2nd transmission part 32b is another member was demonstrated. In the operation component 32 of the present embodiment, each of the operation unit 32 a and the second transmission unit 32 b is part of the same member. The operation component 32 is made of an elastic body such as rubber. The operation part 32a is cylindrical, and the cylindrical 2nd transmission part 32b is formed in the upper side. Inside the second transmission portion 32b, a second supported portion 32c through which the support portion 34b (see FIG. 3) of the inner component 34 is rotatably inserted is formed.

  The aforementioned second engagement portion 44 is formed on the end face in the axial direction X of the second transmission portion 32b. The second transmission portion 32 b is formed with a cutout groove 32 f extending in the circumferential direction on the lower side of the second engagement portion 44. The notch groove 32 f is formed to allow the arc-shaped portion 32 e including the second engagement portion 44 to be elastically deformed in the direction Pe away from the first engagement portion 42. Similar to the example of FIG. 13, the arc-shaped portion 32 e becomes an urging portion 36 that applies an urging force.

  As described above, in the operation component 32, the operation unit 32a and the second transmission unit 32b may be configured as separate members, or may be configured as part of the same member.

FIG. 17A is a block diagram showing a part of the screw device 10 according to the first embodiment by a functional block. In the drawing, the separate members are indicated by solid blocks, and straight lines connecting the blocks indicate torque transmission paths.
As described above, the screw device 10 according to the first embodiment includes the screw component 30 and the operation component 32. In the screw part 30, the apparatus side screw part 30c and the first transmission part 30b are part of the same member, and in the operation part 32, the operation part 32a and the second transmission part 32b are separate parts. The torque is transmitted between the screw component 30 and the operation component 32 by the engagement of the first engagement portion 42 and the second engagement portion 44 provided on the first transmission portion 30 b and the second transmission portion 32 b, respectively. In addition, torque is transmitted between the operation unit 32a and the second transmission unit 32b, which are separate members, by the guide mechanism 48 that rotatably connects the two integrally. A biasing portion 36, which is a separate member, is disposed between the operation portion 32a and the second transmission portion 32b. When the second transmission portion 32b slides relative to the operation portion 32a by the guide mechanism 48, the urging portion 36 is elastically deformed, and the urging force applied from the urging portion 36 to the second transmission portion 32b is increased.

FIG. 17B is a block diagram showing a part of the screw device 10 according to the modification in a functional block.
As compared with the example of FIG. 17A, in the screw device 10, the device-side screw portion 30c of the screw component 30 and the first transmission portion 30b are separate members, and the operation portion 32a of the operation component 32 and the second transmission portion 32b. Is a part of the same member. The torque is transmitted between the screw component 30 and the operation component 32 by the engagement of the first engagement portion 42 and the second engagement portion 44 provided on the first transmission portion 30 b and the second transmission portion 32 b, respectively. In addition, torque is transmitted between the device-side screw portion 30c and the first transmission portion 30b, which are separate members, by the guide mechanism 48 that rotatably connects the two together. A biasing portion 36, which is a separate member, is disposed between the device side screw portion 30c and the first transmission portion 30b. When the first transmission portion 30b slides relative to the apparatus side screw portion 30c by the guide mechanism 48, the urging portion 36 is elastically deformed, and the urging force applied from the urging portion 36 to the first transmission portion 30b is increased. . Thus, the screw component 30 may be configured as separate members without the device-side screw portion 30c and the first transmission portion 30b being configured as part of the same member.

  Although the present invention has been described above based on the embodiment, the embodiment only shows the principle and application of the present invention. In addition, many modifications and changes in arrangement can be made to the embodiment without departing from the concept of the present invention defined in the claims.

  The other member to which the screw device 10 is attached has been described an example in which the fork 26 serving as the component of the toilet bowl device 12, that is, the component of the water accessories. The “water item” includes, in addition to the toilet bowl device 12, a water faucet, a bathtub, a wash basin, a handwasher, a sink, a drainage facility and the like. The components of the water accessories are those in which a water channel is formed. The mating member is not limited to the parts of such a water accessories, and may be used in devices for other uses.

  Also, an example has been described in which the mating screw 26c of the mating member is a male screw, and the device-side screw 30c attached to the mating screw 26c is a female screw. Besides, the mating screw 26c may be a female screw, and the device screw 30c may be a male screw. In any case, the screw device 10 may be attached to the mating member via a screw structure.

  In addition, the screw device 10 connects the plural plug members such as the branch plug 26 and the first water supply pipe 24 and explains an example provided with the inner part 34 having a role of a socket part communicating the water channel in each pipe member. did. The screw device 10 may be used not only for connecting a plurality of piping members, but also for using a mating member as a bolt or a nut in combination with these to fasten a plurality of parts used in water accessories. In this case, the inner part 34 of the screw device 10 does not have to play the role of a socket part, as long as the screw part 30 and the operation part 32 are held rotatably. Further, in order to rotatably hold the screw component 30 and the operation component 32, the inner component 34 may not be present.

  Further, the number and arrangement of the first engagement portion 42 of the screw component 30 and the second engagement portion 44 of the operation component 32 are not particularly limited. However, in order to disperse and transmit a large torque from the operation component 32 to the screw component 30, the number of second engaging portions 44 is preferably two or more, and more preferably three or more.

DESCRIPTION OF SYMBOLS 10 ... Screw apparatus 26, 26 ... Bifurcated plug (other member) 30, 30 ... Screw part, 32 ... Operation part, 36 ... Biasing part, 38 ... Opposite surface, 40 ... Torque transmission mechanism, 42 ... 1st engaging part, 44 ... second engaging portion.

Claims (4)

A screw part for attaching to a mating member through a screw structure;
An operating part disposed in one of the axial directions of the screw part relative to the screw part, for operating when rotating the screw part;
A first state in which torque can be transmitted from the operating component to the screw component when the operating component is rotated in a direction in which the screw component is tightened; And a torque transfer mechanism capable of taking two states.
The torque transmission mechanism is formed on a pair of opposing surfaces facing in the axial direction of the screw component and the operation component, and the first engagement portion and the second engagement component capable of transmitting torque by circumferentially engaging each other have a engaging portion,
The torque transmission mechanism, when switching from said first state to said second state, are those wherein the first engaging portion and second engaging portion is relatively displaced away in the axial direction, and the second when the first engagement portion and the second engaging portion is relatively displaced away in the axial direction, Bei example an elastically deformable biasing portion to the axis line direction,
It said urging portion is Ri plate Banedea the first protrusion along the circumferential direction and the second protrusion is formed in an annular shape so as to be arranged alternately,
The screw device includes a first transmission portion in which the first engagement portion is formed, and a second transmission portion in which the second engagement portion is formed,
The first convex portion is formed to be a convex curved in the axial direction,
The second convex portion is formed to be a convex that is curved in the direction opposite to the axial direction from the direction in which the first convex portion is convex in the axial direction, and is in contact with the second transmission portion and, a screw device according to claim Rukoto is disposed at a position overlapping in the axial direction with respect to the second engagement portion.   The operation component includes an operation unit and a second transmission unit which are separate members.
  The operation unit and the second transmission unit are integrally rotatably connected, and a guide mechanism slidably guides the second transmission unit in the axial direction with respect to the operation unit.
  The screw device according to claim 1, wherein the biasing portion is circumferentially positioned with respect to the operation portion by engagement with a part of the operation portion.   The screw device according to claim 2, wherein the biasing portion is circumferentially positioned with respect to the operation portion by engagement of a portion of the first convex portion and a portion of the operation portion.   The screw device according to any one of claims 1 to 3, wherein in the screw component and the operation component, a torque transmission portion including the engagement portion is formed of a hard material.

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