JP2017104187A - Connection structure of two members and cleaning tool using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate change operation to the extended state of two members while attaining miniaturization and light weight of a hinge mechanism, with an engaging force increased in an engagement holding mechanism.SOLUTION: A connection structure has an engagement holding mechanism E that engages and holds in an extended state two members 1, 2 connected with a hinge mechanism D. The engagement holding mechanism E includes: a part 20 to be engaged which is provided in one member 1; an engaging part 21 which can be engaged/disengaged relative to the part 20 to be engaged when the two members 1, 2 are in an extended state; a movable engagement member 22 which is freely movably provided in the engaging/disengaging directions of the engaging part 21; an energizing part 23 which movably energizes the movable engagement member 22 to the engaging side; and an operation part 24 which movably operates the movable engagement member 22. In addition, a movement regulation mechanism F is installed which, in a rotary region corresponding to the extended state, allows movement of the movable engagement member 22 to the engaging position by the energizing part 23 and which, in other rotary regions uncorresponding to the extended state, holds the engaging part 21 of the movable engagement member 22 in a non-engaging position.SELECTED DRAWING: Figure 5

Description

  The present invention is a two-member connection structure used for a handle of a cleaning tool, a handle of an umbrella, and the like. Specifically, the hinge mechanism that rotatably connects two members between an extended state and a folded state; The present invention relates to a two-member connecting structure provided with an engagement holding mechanism for engaging and holding a member in an extended state so as not to be relatively rotatable, and a cleaning tool using the same.

As a two-member connection structure, for example, as shown in Patent Document 1, a structure in which two rectangular tube-shaped members constituting a handle of a cleaning tool are rotatably connected has been proposed. In the hinge mechanism disclosed in this two-member connecting structure, a first hinge protruding piece is formed at the end of one member so as to protrude outward in the downward direction in the rotational radius direction, and the end of the other member is formed at the end of the other member. Is formed with a second hinge protruding piece that protrudes outward in the rotational radial direction, and the first hinge protruding piece and the second hinge protruding piece are arranged around the horizontal rotation axis center in the horizontal direction by the rotation fulcrum shaft. It is connected so that relative rotation is possible.
In this hinge mechanism, the connecting end surfaces of both members are in contact with each other so that the axes of the two members are in a straight line, and the extended state is established. A folded state in which the lower edges are close to or in contact with each other is in a folded state.

Further, to constitute the engagement holding mechanism, one member is formed with an engagement hole as an engaged portion configured by an internal space of the rectangular tube and an end opening. The other member has an engaging part that can be engaged and disengaged with respect to the engaging hole of one member when both members are in the extended state, and is movable in the engaging and disengaging direction of the engaging part. An engagement member, a compression coil spring as an urging portion for urging and moving the movable engagement member to the engagement side, and an operation for moving the movable engagement member to the engagement release side against the elastic urging force of the compression coil spring And an operation unit for performing the operation.
The engaging portion of the movable engaging member is configured to engage with the set engaging dimension into the engaging hole of one member in a state where the connecting side end surfaces of both members are in contact with each other.
Further, the end surface of the engaging portion of the movable engaging member provided on the other member is formed as an inclined surface that protrudes toward the one member side toward the outer side in the rotational radius direction, and the inclined end surface of this engaging portion. In addition, when the opening edge portion on the outer side in the rotation radial direction of the opening edge of one member rotating around the rotation axis contacts with the movable engagement member by the component force in the longitudinal direction of the member The engaging portion is pushed to the disengagement side against the elastic biasing force of the compression coil spring.

When both members in the extended state are changed to the folded state, the movable engagement member is moved to the disengagement side against the elastic biasing force of the compression coil spring by operating the operation unit, and the movable engagement is performed. When the tip of the engaging portion of the member is detached from the opening edge of one member, both members are rotated to the folding side around the rotation axis.
In addition, when changing both members in the folded state to the extended state, both the members are rotated to the extended side around the rotation axis, and before both members reach the extended state, The opening edge portion of the opening edge on the outer side in the rotational radius direction contacts the inclined end surface of the engaging portion of the movable engaging member. The movable engaging member is pushed to the disengagement side against the elastic biasing force of the compression coil spring due to the component longitudinal force due to the contact, and immediately before the connecting side end surfaces of both members contact each other. The engaging portion of the engaging member projects and moves to the engaging position by the elastic biasing force of the compression coil spring.

FIG. 7 of JP2013-208326A

In the conventional engagement holding mechanism, when both the members in the folded state are changed to the extended state, the opening on the outer side in the rotational radial direction among the opening edges of one member that rotates around the rotational axis. The inclined end surface of the engaging portion of the movable engaging member is pushed in at the end portion. Therefore, when the set engagement dimension of the engagement portion of the movable engagement member is made sufficiently long, the relationship between the opening edge portion of the opening edge of one member and the movable engagement member on the outer side in the rotational radial direction is set. The initial contact position with the inclined end surface of the joint portion is biased toward the pivot axis side. Along with the deviation of the initial contact position toward the pivot axis side, the inclination angle for pushing obliquely with respect to the moving direction of the movable engagement member increases, and the movable engagement member in the member transverse direction with respect to the other member increases. Since the pressing force increases, the frictional resistance of the movable engagement member pushed toward the engagement release position side along the inner surface of the other member increases, which is great for changing the folded state of both members to the extended state. It takes effort.
Further, as a method of reducing the operating force for changing the both members into the extended state, the rotational axis positions of the first hinge protrusion of one member and the second hinge protrusion of the other member are set as movable engaging members. In contrast, it is conceivable to dispose a large distance outwardly outward in the rotational radius direction. However, in this case, there is a problem in that the hinge mechanism of both members is increased in size and weight due to the downwardly spaced outward arrangement.

  In view of this situation, the main problem of the present invention is to easily change the extended state of both members while reducing the size and weight of the hinge mechanism while increasing the engagement force of the engagement holding mechanism. It is in the point which provides the two-member connection structure which can be used, and the cleaning tool using the same.

A first characteristic configuration according to the present invention includes a hinge mechanism that rotatably couples two members between an extended state and a folded state, and a mechanism that engages and holds the two members in a non-rotatable state in the extended state. A two-member connection structure provided with a joint holding mechanism,
The engagement holding mechanism has an engaged portion provided on one of the members and an engaging portion that can be engaged with and disengaged from the engaged portion when both the members are in the extended state. And a movable engagement member provided movably in the engagement / disengagement direction of the engagement portion with respect to the other member, and an urging portion for urging and moving the movable engagement member toward the engagement side, An operation unit for moving the movable engagement member to the engagement release side,
Among the rotation regions of the two members, in the rotation region portion corresponding to the extended state, the movable engagement member is allowed to move to the engagement position of the movable engagement member by the urging force of the urging portion, In addition, a movement restricting mechanism that holds the engaging portion of the movable engaging member in the non-engaging position against the urging force of the urging portion is provided in another rotating region that does not correspond to the extended state. There is in point.

According to the above configuration, when both the members are in the folded state, the engaging portion of the movable engaging member that is movably provided on the other member is resisted by the urging force of the urging portion by the movement restricting mechanism. It is held in the disengaged position. This state is maintained in the other rotation region portion that does not correspond to the extended state among the rotation regions of both members. That is, when changing both the members in the folded state to the extended state, the engaging portion of the movable engaging member is held in the non-engaged position until immediately before the extended state.
When the engaging portion of the movable engaging member reaches the rotation region corresponding to the extended state, the movement restriction by the movement restricting mechanism is released, and the engaging portion of the movable engaging member is biased by the biasing portion. Thus, the engagement portion of the movable engagement member is urged and held at the position where the engagement portion of the movable engagement member is engaged with the engagement portion of the one member.

  Further, by operating the operation portion of the engagement holding mechanism, the engagement portion of the movable engagement member at the engagement position is moved to the non-engagement position against the urging force of the urging portion, and extended in that state. When the rotation operation is performed on the other rotation area portion that does not correspond to the state, the engagement portion of the movable engagement member is held in the non-engagement position by the movement restriction mechanism as it is.

And since the engagement part of a movable engagement member can be engaged / disengaged only in the rotation area part corresponding to an extended state among the rotation area | regions of both members, the movable engagement provided in the other member Even if the engagement margin between the engaging portion of the member and the engaged portion provided in one member is increased, it is possible to suppress adverse effects on the rotation operation of both members.
Therefore, while increasing the engagement force in the engagement holding mechanism, it is possible to easily perform the operation of changing both the members to the extended state while reducing the size and weight of the hinge mechanism.

  According to a second characteristic configuration of the present invention, the movement restricting mechanism is provided on the movable engagement member in a state in which the movement restriction mechanism protrudes toward the engaged portion in a rotation region corresponding to the extended state of the two members. The movement restricting protrusion and the engagement of the movable engagement member are continuous in an arc shape or substantially arc shape around the rotation axis of the hinge mechanism only in the other rotation region portion that does not correspond to the extended state. And a protrusion restricting surface that comes into contact with the tip of the movement restricting protrusion in a state where the portion is in the non-engagement position.

According to the above configuration, in the other rotation region portion that does not correspond to the extended state, the movable engagement member is provided on the protrusion regulating surface continuously formed in an arc shape or a substantially arc shape around the rotation axis of the hinge mechanism. The tip of the provided movement restricting projection comes into contact, and the engaging portion of the movable engaging member is held in the non-engaging position.
Therefore, it is possible to smoothly perform the rotation operation of both the members in the other rotation area portion not corresponding to the extended state with the same or substantially the same operation feeling.

  According to a third characteristic configuration of the present invention, the protrusion restricting surface of the movement restricting mechanism includes a part of an outer peripheral surface of the cylindrical coupling portion of the hinge mechanism provided on one of the members. is there.

  According to the above configuration, the protrusion restricting surface of the movement restricting mechanism is structured and manufactured using the outer peripheral surface of the cylindrical connecting portion continuously formed in an arc shape or substantially arc shape around the rotation axis of the hinge mechanism. It can be advantageously configured in terms of cost.

  According to a fourth characteristic configuration of the present invention, a portion of the outer peripheral surface of the cylindrical connecting portion that faces the tip of the movement restricting protrusion in the rotation region corresponding to the extended state of the two members is An engaging recess is formed in which the movement restricting protrusion is engaged by the urging force of the urging portion.

According to the above configuration, when the engagement portion of the movable engagement member reaches the rotation region corresponding to the extended state, the movement restriction by the movement restriction mechanism is released, and the movable engagement member is urged by the urging force of the urging portion. The engaging portion engages with the engaged portion provided on one member, and the movement restricting projection of the movable engaging member engages with the engaging recess formed on the outer peripheral surface of the cylindrical connecting portion. To do.
Therefore, the two members can be firmly connected and maintained in the extended state by the engagement of the hinge mechanism at two locations in the rotational radius direction.

  According to a fifth characteristic configuration of the present invention, the engaged portion is an engagement that opens toward the engaging portion of the movable engaging member in a rotation region corresponding to the extended state of the two members. The engaging portion is formed of an engaging protrusion that can be engaged with the engaging hole in a rotation region corresponding to the extended state of the two members, and the hinge mechanism in the engaging protrusion. The outer surface located on the outer side in the rotational radius direction of the hinge mechanism rotates from the inner surface on the outer side located on the outer side in the rotational radial direction of the hinge mechanism in the engagement hole toward the engagement tip side. It is in the point which is comprised in the taper surface which is spaced apart to the axial center side, and adjoins or contacts the said outer side inner surface in the said engagement hole toward the base end side.

According to the above configuration, since the outer surface located on the outer side in the rotational radial direction of the hinge mechanism in the engaging projection is configured as the tapered surface, this corresponds to the engagement distal end side of the engaging projection. Since it is in a state of being separated from the inner surface on the outer side of the engagement hole toward the pivot axis side of the hinge mechanism, when the movable engagement member reaches the rotation region corresponding to the extended state of both members, the movable engagement The engaging protrusion of the member is smoothly engaged in the engaging hole without being caught.
Nevertheless, since the proximal end side of the outer surface of the engagement protrusion is in the state of being close to or in contact with the outer surface of the corresponding engagement hole, the engagement protrusion and the engagement hole are fitted. Can be suppressed.

  According to a sixth characteristic configuration of the present invention, the distal end portion of the movement restricting protrusion is formed with an outer peripheral surface side opening edge portion in the engagement recess when the both members are initially rotated from the extended state to the folded state. A guide portion for moving the movable engagement member to the engagement release side with the contact is formed.

  According to the above configuration, when both the members in the extended state are rotated to the folded state side, the operation portion of the engagement holding mechanism is operated to attach the engagement portion of the movable engagement member in the engagement position. It is moved to the disengaged position against the urging force of the urging portion. At this time, the movement operation of the movable engagement member by the operation unit is insufficient, and the distal end portion of the movement restricting projection may be located in the engagement recess. Even in this case, at the time of initial rotation from the extended state to the folded state of both members due to the contact between the inclined surface formed at the tip of the movement restricting projection and the outer peripheral surface side opening edge in the engaging recess, Since the movable engagement member can be moved to the engagement release side, the rotation operation of both the members to the folded state side can be performed reliably and smoothly.

  7th characteristic structure by this invention is the cleaning tool using the 2 member connection structure as described in any one of 1st-6th characteristic structure, Comprising: One of the said members is a cleaning part side. It is composed of a handle member and the other is formed of a handle member on the gripping portion side.

According to the above configuration, the handle member on the cleaning tool side is provided with the engaged portion, and the handle member on the gripping portion side is provided with the movable engagement member and the biasing portion.
Then, when changing both handle members in the folded state to the extended state, with the grip portion of the other handle member held, the weight on the one handle member side is used to open the side around the rotation axis. When the swing operation is performed, the engagement portion of the movable engagement member reaches the rotation region corresponding to the extended state, and at the same time, the movement restriction by the movement restriction mechanism is released, and the engagement portion of the movable engagement member becomes the biasing portion. Engage with the engaged part with the urging force.
Therefore, in a state where the grip portion of the other handle member is held, both the handle members in the folded state are simply swung to the opening side around the rotation axis using the weight of the one handle member side. Can be easily changed to the extended state.

The whole perspective view of the cleaning tool of a 1st embodiment to which the two member connection structure of the present invention is applied. The perspective view at the time of decomposition | disassembly of the connection structure of both handle members, and the perspective view at the time of an assembly | attachment Exploded longitudinal sectional view of the connecting structure of both handle members Overall longitudinal sectional view of the cleaning tool in the folded state Enlarged sectional view of the connection structure of both handle members in the extended state Longitudinal sectional view of the connection structure showing the folded state of both handle members and the state immediately before the folded intermediate state and the extended state The exploded longitudinal cross-sectional view of the connection structure of the two handle members of the second embodiment to which the two-member connection structure of the present invention is applied.

[First Embodiment]
1 to 6 show a cleaning tool to which the two-member connecting structure of the present invention is applied. This cleaning tool is mainly used for washing a bathtub, a floor, and the like. The cleaning unit A that cleans the surface to be cleaned in a sliding contact state, and the operation for moving the cleaning unit A along the surface to be cleaned. A synthetic resin handle C provided with a gripping portion B and extending in the front-rear direction in an inclined posture is provided.
The handle C has a rectangular tube-shaped handle member (hereinafter referred to as a front-side handle member) 1 on the cleaning portion A side that is one member and a rectangular tube-shaped handle member on the gripping portion B side that is the other member. (Hereinafter, referred to as a rear side handle member).
In the connection structure of the both handle members 1 and 2 thus configured, the extended state (see FIG. 1) in which the both handle members 1 and 2 are joined in a straight line along the front-rear direction, and the cleaning target surface side is directed to cleaning. Engage the hinge mechanism D pivotably connected between the lower edges 1a and 2a (see FIG. 4) in contact with each other and the handle members 1 and 2 in an unfolded state so that they cannot rotate relative to each other. An engagement holding mechanism E for holding is provided.

As shown in FIGS. 1 and 4, the cleaning unit A has a plate-shaped synthetic resin mounting base 3 and a cleaning sponge 4 that is detachably attached to the lower surface of the mounting base 3. I have.
As shown in FIG. 4, a large number of male engaging elements 3a for detachably holding a surface fastener 4C provided on the upper surface side of the cleaning sponge 4 are integrally formed on the lower surface of the mounting base 3. Has been. Further, at the center portion in the left-right direction on the upper surface of the mounting base 3 and at a portion biased to the rear side, it can be attached to and detached from the front end side rectangular tube portion 1A of the front handle member 1 and cannot be relatively rotated. A handle attachment portion 5 having a square connecting shaft portion 5A that is fitted and connected in a state is integrally formed at an inclination angle of the handle C.
As shown in FIG. 4, an engagement recess 7 facing the operation window 6 formed in the front end side square tube portion 1 </ b> A of the front handle member 1 is formed in the square connecting shaft portion 5 </ b> A of the handle attachment portion 5. At the opening edge of the operation window 6 of the front end side square tube portion 1A, the square connecting shaft portion 5A of the handle attachment portion 5 and the front end side square tube portion 1A of the front handle member 1 are fitted with a predetermined fitting depth. When connected, a retaining piece 8 that engages with the engaging recess 7 of the rectangular connecting shaft portion 5A is integrally formed.
The retaining piece 8 is configured to be able to bend and deform in the engagement / disengagement direction with respect to the engaging recess 7, and the distal end of the retaining piece 8 is bent toward the engagement release side by a tool such as a screwdriver inserted in the operation window 6. A disengagement operation piece 8a for deformation is integrally formed.

Various types of cleaning sponges 4 have been developed in the past, and any type of cleaning sponge 4 can be suitably used.
As shown in FIGS. 1 and 4, the cleaning sponge 4 used in this embodiment is disposed on the entire lower surface of the cleaning body 4 </ b> A made of a urethane foam sponge, which is an example of an elastic foam having open cells. The non-woven fabric 4B is adhered by an adhesive or heat fusion. A sheet-like fastener 4C is adhered to the entire upper surface of the cleaning body 4A by an adhesive, heat fusion, or the like.

  As shown in FIGS. 1 and 4, the grip portion B of the rear handle member 2 includes an upper grip portion 9A that is integrally formed at the rear end of the rear handle member 2 and opens downward, and the upper grip portion 9A. A lower grip portion 9B fitted and fixed to the lower opening, and a tubular portion for suspension in a state penetrating the rear end portion of the upper grip portion 9A at the rear end portion of the lower grip portion 9B 9b is integrally formed.

Next, the hinge mechanism D will be described in detail.
As shown in FIGS. 2 to 5, the position corresponding to the lower edge 1 a of the front handle member 1 is set in the left-right direction in the rear end side square tube portion 1 </ b> B of the front handle member 1 and in the center portion in the left-right direction. A first cylindrical connecting portion 12 having a first shaft hole 11 centering on the rotation axis X passing horizontally along the axis and an outer peripheral surface 12a centering on the arc of rotation axis X is integrally formed. ing. The lower half portion of the first cylindrical connecting portion 12 is formed to project downward from the lower edge 1 a of the front handle member 1, and the rear half portion of the first cylindrical connecting portion 12 is the front handle member 1. The rear end surface 1b is formed so as to protrude rearward.

  Both sides of the front end side square tube portion 2A of the rear handle member 2 and spaced apart in the left-right direction by an interval corresponding to or slightly larger than the width of the first cylindrical connecting portion 12 in the rotational axis X direction. In the part, the second shaft hole 13 centering on the rotation axis X passing through the position corresponding to the lower edge 2a of the rear side handle member 2 horizontally along the left-right direction, and the rotation axis X as the arc center A pair of left and right second cylindrical connecting portions 14 having an outer peripheral surface 14a is integrally formed. The lower half of each second cylindrical connecting portion 14 is formed to project downward from the lower edge 2a of the rear side handle member 2, and the front half of each second cylindrical connecting portion 14 is the rear side handle member. 2 is formed so as to protrude forward from the front end face 2b.

The first cylindrical connecting portion 12 of the front side handle member 1 and the second cylindrical connecting portions 14 of the rear side handle member 2 are the first axial hole 11 of the first cylindrical connecting portion 12 and both second cylindrical shapes. The second shaft hole 13 of the connecting portion 14 is configured to be superposed and arranged in a relative posture that communicates in the left-right direction in a concentric state.
By inserting the pivot fulcrum shaft 15 through the first shaft hole 11 of the first cylindrical connecting portion 12 and the second shaft holes 13 of the second cylindrical connecting portions 14 in the superposed arrangement state, the front side The handle member 1 and the rear handle member 2 are pivotally connected so as to be rotatable about the rotation axis X.

As shown in FIG. 2, the rotation fulcrum shaft 15 is connected to the first shaft hole 11 of the first cylindrical connection portion 12 from the second shaft hole 13 side of one second cylindrical connection portion 14 of the rear handle member 2. The first shaft hole 11 of the first cylindrical connection portion 12 from the second shaft hole 13 side of the female second connection shaft member 15A and the other second cylindrical connection portion 14 of the rear handle member 2. It is comprised from the male connection shaft member 15B inserted in the inside.
The shaft portion 15a of the female connecting shaft member 15A is formed with a slit 15C that opens to the tip side in the axial direction, and the shaft portion 15b of the male connecting shaft member 15B is formed of the female connecting shaft member. It is configured in a plate shape that fits into the slit 15C of 15A from the direction of the rotation axis X. A locking projection 15D is integrally formed at an intermediate portion in the rotational axis X direction on both side surfaces of the plate-like shaft portion 15b, and a male type is formed on the inner surface facing the slit 15C of the female type connecting shaft member 15A. An engaging recess 15E is formed in which both locking projections 15D on the connecting shaft member 15B side are engaged.
Further, both the second cylindrical connections of the rear handle member 2 are connected to the proximal end portion of the shaft portion 15a of the female connecting shaft member 15A and the proximal end portion of the shaft portion 15b of the male connecting shaft member 15B. The flanges 15c and 15d that are in contact with the large-diameter recessed portion 13a formed at the outer opening side edge of the second shaft hole 13 in the portion 14 are integrally formed.

Next, the engagement holding mechanism E will be described in detail.
In the rear end side square tube portion 1B of the front side handle member 1 and on the outer side in the rotational radial direction from the first cylindrical connecting portion 12, the rear end face 1b on the rear end surface 1b is rearward. An engagement hole 20 is formed as an engaged portion that opens to the side.
The front end side square tube portion 2A of the rear side handle member 2 is engaged as an engagement portion that is detachable from the rear side with respect to the engagement hole 20 of the rear end side square tube portion 1B of the front side handle member 1. A movable engaging member 22 made of synthetic resin, which is integrally formed with a protrusion 21 and is slidably movable in the engagement / disengagement direction of the engaging protrusion 21 along the inner surface of the rear handle member 2. An urging portion 23 that urges the engagement member 22 to move toward the engagement side, and an operation portion 24 that moves the movable engagement member 22 toward the engagement release side against the urging force of the urging portion 23 are provided. It has been.

The movable engagement member 22 includes a ceiling wall portion 2c and left and right side wall portions 2d and a bottom wall portion 2e constituting the front end side square tube portion 2A of the rear side handle member 2 on the inner surface of the side wall portion 2d. Both guide side surfaces 22a that are slidably guided along and a guide bottom surface 22b that is slidably guided along the inner surface of the bottom wall portion 2e are formed.
On the rear end surface of the movable engagement member 22, a moving guide plate portion 25 is formed integrally with the rear side handle member 2 so as to extend rearward in a state of being close to the inner surface of the ceiling wall portion 2c of the front end side square tube portion 2A. Yes.
Therefore, the movable engagement member 22 smoothly slides in the front-rear direction along the inner surface of the front end side square tube portion 2 </ b> A of the rear handle member 2.

On the upper surface of the movable engagement member 22, there is an operation guide portion 27 that protrudes upward and outward through an operation guide groove 26 in the front-rear direction formed in the ceiling wall portion 2 c of the front end side square tube portion 2 A of the rear handle member 2. The operation portion 24 is integrally formed at the projecting tip of the operation guide portion 27.
The operation part 24 is formed with a concave finger-hanging surface 24a for operating to the rear side which is the locking release side against the urging force of the urging part 23, and the width in the left-right direction of the operation part 24 is The operation guide groove 26 is configured to be larger than the groove width.

  The urging portion 23 includes a compression coil spring 23A extending in the front-rear direction, and the front end portion of the compression coil spring 23A is in close contact with the first spring receiving projection 23B projecting from the rear end surface of the movable engagement member 22. It is fitted externally. The rear end portion of the compression coil spring 23 </ b> A is externally attached to a second spring receiving projection 23 </ b> C protruding from the front surface of the partition wall portion 2 </ b> C in the front end side square tube portion 2 </ b> A of the rear handle member 2.

Then, in the connecting structure of the two handle members 1 and 2 configured as described above, as shown in FIG. 6A, the rotation corresponding to the extended state in the rotation region R of the both handle members 1 and 2 is performed. In the moving region R1, the movement of the engaging protrusion 21 of the movable engaging member 22 to the engaging position by the compression coil spring 23A is allowed, and in the other rotating region R2 that does not correspond to the extended state, the movable engaging member 22 is movable. A movement restricting mechanism F is provided that holds the engaging protrusion 21 of the combined member 22 in the non-engagement position (disengagement position) against the elastic biasing force of the compression coil spring 23A.
As shown in FIGS. 2 to 6, the movement restricting mechanism F is configured so that when both the handle members 1 and 2 are in the extended state, in other words, the rotation region portion corresponding to the extended state of the both handle members 1 and 2. The movement restricting projection 31 integrally formed on the movable engagement member 22 in a state of protruding toward the engagement hole 20 in R1, and the rotation axis of the hinge mechanism D only in the other rotation region R2 that does not correspond to the extended state. A protrusion restricting surface 32 that is continuous in an arc shape or substantially arc shape around X and that contacts the tip of the movement restricting protrusion 31 in a state where the engaging protrusion 21 of the movable engaging member 22 is in the non-engaging position is provided. It has been.
This protrusion restricting surface 32 does not exist in the rotation region R1 that faces the movement restricting protrusion 31 in the rotation region R1 corresponding to the extended state of both handle members 1 and 2, and is in a state immediately before the extended state. Sometimes, from the first rotation position R2a that faces the tip of the movement restricting protrusion 31 to the second rotation position R2b that faces the tip of the movement restricting protrusion 31 when both handle members 1, 2 are in the folded state. It exists only in the rotation region R2.

  Therefore, as shown in FIGS. 4 and 6A, when both handle members 1 and 2 are in the folded state, the movable engagement member 22 is formed on the front end side square tube portion 2A of the rear handle member 2. The movement restricting projection 31 of the movement restricting mechanism F is in contact with an arcuate or substantially arcuate projecting restricting surface 32 provided in another rotation region R2 that does not correspond to the extended state, and is a movable engaging member. The engagement protrusion 21 of 22 is held at the non-engagement position against the elastic biasing force of the compression coil spring 23A. For example, as shown in FIGS. 6B and 6C, this state is maintained in the other rotation region R2 that does not correspond to the extended state among the rotation regions R of both handle members 1 and 2. . That is, when the handle members 1 and 2 in the folded state are changed to the extended state, the engaging protrusion 21 of the movable engaging member 22 is held in the non-engaged position (disengaged position) until immediately before the extended state. Has been.

  Next, as shown in FIG. 5, when the engagement protrusion 21 of the movable engagement member 22 reaches the rotation region R <b> 1 corresponding to the extended state of both handle members 1, 2, the movement restriction protrusion of the movement restriction mechanism F 31 is released from the protrusion restricting surface 32 and the movement restriction is released. Therefore, the engagement protrusion 21 of the movable engagement member 22 mounted on the front end side square tube portion 2A of the rear side handle member 2 is the rear end side corner of the front side handle member 1 by the elastic biasing force of the compression coil spring 23A. The two handle members 1 and 2 are engaged and held in a stretched state joined in a straight line along the front-rear direction.

  Further, by operating the operation portion 24 of the engagement holding mechanism E to the engagement release side, the engagement protrusion 21 of the movable engagement member 22 in the engagement position is not resisted against the elastic biasing force of the compression coil spring 23A. It is moved to the engagement position, and in that state, the other rotation region R2 that does not correspond to the extended state is rotated. Thereby, as shown in the order of FIGS. 6C, 6 </ b> B, and 6 </ b> A, the movement restricting protrusion 31 of the movement restricting mechanism F formed on the movable engagement member 22 does not correspond to the extended state. Again, it comes into contact with the arc-shaped or substantially arc-shaped protrusion restricting surface 32 provided in the rotation region portion R2, and the engaging projection 21 of the movable engaging member 22 is non-resistant against the elastic biasing force of the compression coil spring 23A. It is held at the engagement position (disengagement position).

Therefore, the engagement protrusion 21 of the movable engagement member 22 can be engaged and disengaged only in the rotation region R1 corresponding to the extended state of the rotation regions R of the both handle members 1 and 2, so that it is movable. Even if the engagement margin between the engagement protrusion 21 of the engagement member 22 and the engagement hole 20 formed in the rear end side square tube portion 1B of the front handle member 1 is increased, both the handle members 1 and 2 It is possible to avoid adversely affecting the turning operation.
Therefore, while increasing the engagement force in the engagement holding mechanism E, it is possible to quickly and easily change the both handle members 1 and 2 to the extended state while reducing the size and weight of the hinge mechanism D. .
In particular, in a state where the grip portion B of the rear handle member 2 is gripped, the both handle members 1 in the folded state can be obtained by simply rotating the front handle member 1 to the open side using the weight of the cleaning portion A. 2 can be easily changed to the extended state.

  Further, in the other rotation region R2 that does not correspond to the extended state, the movable engagement member 22 is formed on the protrusion regulating surface 32 continuously formed in an arc shape or a substantially arc shape around the rotation axis X of the hinge mechanism D. Since the tip of the movement restricting projection 31 provided on the abutting portion is in contact, the turning operation of both handle members 1 and 2 in the other turning region R2 that does not correspond to the extended state can be performed smoothly.

Further, the protrusion restricting surface 32 of the movement restricting mechanism F is a part of the outer peripheral surface 12a of the first tubular connecting portion 12 of the hinge mechanism D that is integrally formed with the rear end side tubular portion 1B of the front handle member 1. It is configured with.
Therefore, the portion of the outer peripheral surface 12a of the first cylindrical connecting portion 12 that faces the movement restricting protrusion 31 when both the handle members 1 and 2 are in the extended state is moved by the elastic biasing force of the compression coil spring 23A. An engaging recess 33 is formed to be engaged by the protrusion movement of the restriction protrusion 31 toward the front side.
Therefore, when the engaging protrusion 21 of the movable engaging member 22 reaches the rotation region R1 corresponding to the extended state, the movement restricting protrusion 31 of the movement restricting mechanism F formed on the movable engaging member 22 is protruded. The movement restriction is released by moving away from the outer peripheral surface 12a of the first cylindrical connecting portion 12 constituting the surface 32, and a turning radius is applied to the engaging recess 33 formed on the outer peripheral surface 12a of the first cylindrical connecting portion 12. Rotate to the opposite position in the direction. At the moment of rotation to this position, the engagement protrusion 21 of the movable engagement member 22 is engaged with the rear end side rectangular tube portion 1B formed by the elastic biasing force of the compression coil spring 23A. The movement restricting protrusion 31 of the movable engaging member 22 engages with the hole 20 and engages with the engaging recess 33 of the first cylindrical connecting portion 12.
In this engaged state, as shown in FIGS. 3 and 5, when the handle members 1 and 2 in the extended state are turned to the folded state side, the turning radius of the engaging protrusion 21 of the movable engaging member 22 is increased. An outer side surface (upper surface) 21 a located on the outer side in the direction abuts on an outer side inner surface 20 a located on the outer side in the rotational radial direction in the engagement hole 20 of the front handle member 1. At the same time, the outer surface (upper surface) 31 a located on the outer side in the rotational radial direction of the movement restricting projection 31 of the movable engagement member 22 is outward in the rotational radial direction of the engaging recess 33 of the first cylindrical connecting portion 12. Abutting on the outer side inner surface 33a located on the side, the rotation of the both handle members 1 and 2 around the rotation axis X is prevented.
Therefore, the two handle members 1 and 2 can be strongly maintained in the extended state by the engagement of the hinge mechanism D at two locations in the rotational radius direction.

Further, as shown in FIGS. 3 and 5, the outer side surface 21 a on the outer side in the rotational radius direction of the engaging projection 21 of the movable engaging member 22 is closer to the outer end side of the engaging hole 20 toward the engaging tip side. The taper surface is configured to be spaced apart from 20a toward the rotation axis X side and approach or contact the outer side inner surface 20a of the engagement hole 20 toward the base end side.
Therefore, the engagement tip 21 on the distal end side of the outer side surface 21a is in a state of being separated from the outer side inner surface 20a of the corresponding engagement hole 20 toward the rotation axis X side, so that the movable engagement When the engagement protrusion 21 of the member 22 reaches the rotation area corresponding to the extended state, the engagement protrusion 21 is smoothly engaged in the engagement hole 20 without being caught.
Nevertheless, since the base end side of the outer surface 21a of the engagement protrusion 21 is in the state of being close to or in contact with the outer side inner surface 20a of the corresponding engagement hole 20, the engagement protrusion 21 and the engagement hole 20 are in contact with each other. It is possible to suppress backlash in a state where the two are fitted.

  Further, as shown in FIG. 3, the pattern crossing between the base end side portion of the outer surface 21 a of the engagement protrusion 21 of the movable engagement member 22 and the lower surface 31 b of the movement restricting protrusion 31 on the inner side in the rotational radius direction. The distance W1 in the direction is greater than the distance W2 in the crossing direction between the outer side inner surface 20a of the engagement hole 20 and the inner side inner surface 33b located on the inner side in the rotational radial direction of the engagement recess 33. Is also made slightly smaller.

As shown in FIGS. 3 and 5, at the tip of the movement restricting projection 31, the opening edge of the engaging recess 33 at the time of initial rotation from the extended state to the folded state of both handle members 1, 2, A guide portion 31c in an inclined posture that moves the movable engagement member 22 to the engagement release side in accordance with the contact with the opening edge of the inner side inner surface 33b located on the inner side in the rotational radius direction of the engagement recess 33 is provided. Is formed.
Further, the movement restricting projection is formed at the opening edge of the outer side inner surface 33a located on the outer side in the rotational radial direction of the engaging recess 33 in accordance with the contact with the tip of the movement restricting projection 31 that is engaged and moved. A second guide portion 33c having an inclined posture for moving and guiding 31 to a predetermined engagement position is formed.

As shown in FIGS. 1 to 4, when the front handle member 1 and the rear handle member 2 are in the extended state, the side handle that engages from the turning direction and prevents the side handle members 1 and 2 from shaking sideways. A shake prevention unit 35 is provided. The lateral shake preventing portion 35 includes a substantially U-shaped lateral shake preventing member 35A formed to project forward from the front end surface 2b of the front end side rectangular tube portion 2A of the rear side handle member 2, and the lateral shake preventing member. 35A is comprised from the engagement recessed part 35B of the substantially U shape formed in the outer surface of the ceiling wall part 1c of the rear end side square cylinder part 1B of the front side handle member 1 in the state which can be engaged / disengaged from a rotation direction. ing.
The substantially U-shaped lateral vibration preventing member 35A is also used as a hanging tool when both handle members 1, 2 are in the folded state.

[Second Embodiment]
In the movement restricting mechanism F shown in FIG. 7, when both the handle members 1 and 2 are in the extended state in the first cylindrical connecting portion 12 of the front handle member 1, The movement restricting projection by the elastic biasing force of the compression coil spring 23A in the range from the first position P1 facing the lower surface 31b located on the side in the rotational radius direction to the second position P2 corresponding to the opening edge of the engagement hole 20 A recess 36 that allows the protrusion 31 to move forward is formed.
The concave portion 36 does not have a function of preventing the rotation operation of the handle members 1 and 2 in the extended state, and the rotation operation is blocked by the outer surface 21 a of the engagement protrusion 21 of the movable engagement member 22. Only the engagement with the outer side inner surface 20a in the engagement hole 20 of the front handle member 1 is achieved.
In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) In each above-mentioned embodiment, the 1st cylindrical connection part 12 which integrally formed the hinge mechanism D in the center part of the rear end side square cylinder part 1B of the front side handle member 1 and the left-right direction, A pair of left and right second cylindrical connecting portions 14 integrally formed in the front end side rectangular tube portion 2A of the rear handle member 2 and on both side portions spaced in the left-right direction, and a first cylindrical shape in a superposed arrangement state The rotary shaft 15 is inserted through the first shaft hole 11 of the connecting portion 12 and the second shaft hole 13 of the second cylindrical connecting portions 14. However, the present invention is not limited to this configuration. For example, a pair of left and right second cylindrical connecting portions 14 are integrally formed on the rear end side square tube portion 1B of the front side handle member 1, and the front end of the rear side handle member 2 is formed. You may integrally form the 1st cylindrical connection part 12 in 2 A of side square cylinder parts.
Moreover, the 1st cylindrical connection part 12 by the side of the front side handle member 1 and the 2nd cylindrical connection part 14 by the side of the back side handle member 2 are comprised from a plate-shaped hinge piece, and the other 1st You may integrally form the rotation fulcrum shaft 15 which supports the 2 cylindrical connection part 14 or the 1st cylindrical connection part 12 so that rotation is possible.

  (2) In each of the embodiments described above, the first tubular connecting portion of the hinge mechanism D in which the protrusion restricting surface 32 of the movement restricting mechanism F is integrally formed with the rear end side tubular portion 1B of the front handle member 1 is formed. 12 parts of the outer peripheral surface 12a were configured. However, the present invention is not limited to this configuration. For example, a protrusion restricting member having a protrusion restricting surface 32 that is continuous in an arc shape or substantially arc shape around the rotation axis X of the hinge mechanism D is separately provided. May be.

(3) In each of the above-described embodiments, the protrusion restricting surface 32 of the movement restricting mechanism F is continuously formed in an arc shape or a substantially arc shape around the rotation axis X of the hinge mechanism D, and does not correspond to the extended state. The rotating operation of the two handle members 1 and 2 in the rotating region portion is configured to be smoothly performed with the same or substantially the same operation feeling. However, the present invention is not limited to this configuration. For example, the second time when the protrusion restricting surface 32 of the movement restricting mechanism F faces the tip of the movement restricting protrusion 31 when both the handle members 1 and 2 are in the folded state. The moving position R2b side may be configured to have a curved shape, a linear shape, or a combination of a curved line and a straight line in a state of being separated from or close to the rotation axis X of the hinge mechanism D.
The protrusion restricting surface 32 of the movement restricting mechanism F may have a substantially continuous shape as long as the movement restricting protrusion 31 can be moved and guided substantially smoothly.

(4) In each of the above-described embodiments, the urging portion 23 moves and urges the movable engagement member 22 to the engagement side, and the operation portion 24 provided on the movable engagement member 22 urges the movable engagement member 22. It was configured to move to the disengagement side against the urging force of the portion 23. However, the present invention is not limited to this configuration, and for example, a release holding mechanism that holds the movable engagement member 22 at the engagement release position against the biasing force of the biasing portion 23 may be provided.
In this case, in configuring the movement restricting mechanism F, the disengagement position of the movable engagement member 22 in the other rotation region R2 that does not correspond to the extended state is such that the engagement protrusion 21 of the movable engagement member 22 is the first. It may be set in the disengagement region after the disengagement from the engagement recess 33 formed on the outer peripheral surface 12a of the one cylindrical connecting part 12 and until the disengagement position of the disengagement holding mechanism.

  (5) In the above-described embodiments, the cleaning tool using the two-member connection structure has been described. However, the cleaning tool can be effectively used as a two-member connection structure in other fields such as an umbrella handle.

  (6) In each of the above-described embodiments, the urging portion 23 is mainly composed of the compression coil spring 23A. However, the urging portion 23 may be composed of another elastic urging body for the leaf spring.

A Cleaning part B Gripping part D Hinge mechanism E Engagement holding mechanism F Movement restricting mechanism R Rotating area R1 Rotating area part R2 Rotating area part X Rotating shaft core 1 Member (handle member, front side handle member)
2 members (handle members, rear handle members)
12 cylindrical connecting part (first cylindrical connecting part)
12a outer peripheral surface 20 engaged part (engagement hole)
20a Outer side inner surface 21 Engagement part (engagement protrusion)
21a Outer side surface 22 Guide bottom surface 23 Biasing portion 24 Operation portion 31 Movement restricting protrusion 31c Guide portion 32 Protrusion restricting surface 33 Engaging recess

Claims (7)

There are provided a hinge mechanism for rotatably connecting the two members between the extended state and the folded state, and an engagement holding mechanism for engaging and holding the two members in the extended state so as not to be relatively rotatable. A member connection structure,
The engagement holding mechanism has an engaged portion provided on one of the members and an engaging portion that can be engaged with and disengaged from the engaged portion when both the members are in the extended state. And a movable engagement member provided movably in the engagement / disengagement direction of the engagement portion with respect to the other member, and an urging portion for urging and moving the movable engagement member toward the engagement side, An operation unit for moving the movable engagement member to the engagement release side,
Of the rotation regions of the two members, the rotation region corresponding to the extended state allows the movement of the movable engagement member to the engagement position of the movable engagement member by the biasing portion, and extends. In another rotation area portion that does not correspond to the state, a movement restricting mechanism is provided to hold the engaging portion of the movable engaging member in a non-engagement position against the urging force of the urging portion. Member connection structure.   The movement restricting mechanism corresponds to an extension state and a movement restricting projection provided on the movable engagement member in a state of projecting to the engaged portion side in a rotation region portion corresponding to the extension state of the both members. Only in the other rotation area portion, it is continuous in an arc shape or a substantially arc shape around the rotation axis of the hinge mechanism, and the engagement portion of the movable engagement member is in the non-engagement position. The two-member connection structure according to claim 1, further comprising a protrusion restricting surface that comes into contact with a tip of the movement restricting protrusion.   The two-member connecting structure according to claim 2, wherein the protrusion restricting surface of the movement restricting mechanism is configured by a part of an outer peripheral surface of a cylindrical connecting portion of the hinge mechanism provided on one of the members.   Of the outer peripheral surface of the cylindrical connecting portion, the movement restriction by the urging force of the urging portion is applied to a portion facing the tip of the movement restricting projection in the rotation region corresponding to the extended state of the two members. The two-member connecting structure according to claim 3, wherein an engaging recess with which the protrusion is engaged is formed.   The engaged portion includes an engaging hole that opens toward the engaging portion of the movable engaging member in a rotation region corresponding to the extended state of the two members, and the engaging portion is And an engaging protrusion that can be engaged with the engaging hole in the rotation region corresponding to the extended state of the two members, and is located on the outer side in the rotation radial direction of the hinge mechanism in the engaging protrusion. The outer surface to be moved away from the inner surface on the outer side of the hinge mechanism in the rotational radial direction of the hinge mechanism toward the distal end side of the engagement mechanism toward the pivot axis side of the hinge mechanism; 5. The two-member connection structure according to claim 1, wherein the two-member connection structure according to claim 1, wherein the two-member connection structure is configured so as to be closer to or in contact with the outer side inner surface of the engagement hole toward an end side.   At the distal end of the movement restricting protrusion, the movable engagement member is engaged with the opening of the engagement recess when the two members are initially rotated from the extended state to the folded state. The two-member connection structure according to claim 4, wherein a guide portion to be moved is formed. It is the cleaning tool using the two member connection structure of any one of Claims 1-6, Comprising: One is comprised from the handle member by the side of a cleaning part among the said both members, and the other is a holding part side. A cleaning tool composed of a handle member.

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