JP3810565B2 - Clamping device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clamp device that is attached to a combined body and puts a combined body into a combined state or a non-bonded state with the combined body.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there are various types of clamp devices that are attached to a combined body and put the coupled body into a coupled state or a non-coupled state with the coupled body.
[0003]
Among these types of clamping devices, there is a configuration shown in FIGS. 9 and 10. This conventional clamping device will be described with reference to the above drawings.
[0004]
In FIG. 9, reference numeral 100 denotes a combined body, and reference numeral 110 denotes a coupled body that is coupled or uncoupled by a clamp device 120 attached to the coupled body 100. The clamp device 120 is rotatable about a bearing 103 made of a shaft hole formed in the opposing walls 101a and 101a of the protruding wall 101 formed in a U shape on the upper wall surface 102 of the combined body 100. The rotating shaft 122 to be fitted is formed in the intermediate portion, and has an engaging claw 123 that engages with and disengages from the engaging portion 111 of the coupled body 110 on one end side, that is, the coupled body 110 side. The clamp body 121 having a spring receiving portion 124 at one end thereof, and one end side thereof is supported by a support portion 104 formed between the projecting walls 101a of the coupling body 100, and the other end side is brought into contact with the spring receiving portion 124. Thus, the engaging claw 123 is constituted by a coil spring 130 that urges the coupled body 110 toward the engaging portion 111 side.
[0005]
Further, as shown in FIG. 9, the engaging portion 111 formed on the coupled body 110 is configured by a side wall 113 on the coupled body 100 side of the concave portion 112 formed on the coupled body 110, and The engaging claw 123 of the clamp body 121 is formed by bending the one end side of the clamp body 121 at a right angle.
[0006]
Then, by engaging the engaging claw 123 with the side wall 113 of the concave portion 112, that is, the locking portion 111, by immersing the engaging claw 123 into the concave portion 112 from the tip portion thereof, the coupled object 110. Is coupled to the coupled body 100, and the engagement claw 123 is removed from the locking portion 111 so that the uncoupled state, that is, the coupling is released.
[0007]
As shown in FIG. 9, the relationship between the rotation shaft 122 provided on the clamp body 121 and the engagement claw 123 is such that the axis Q of the rotation shaft 122 is engaged with the engagement portion 111 and the engagement claw 123 is engaged. In a combined state, the engagement claw 123 is positioned so as to be located on the outer side, that is, on the upper side of the surface 100 (hereinafter referred to as a reference surface) C including a line passing through the tip 123a of the engaging claw 123 and orthogonal to the side wall 113 of the recess 112. ing.
[0008]
  The reason why the axis Q of the rotation shaft 122 is positioned above the combined body 100 with respect to the reference plane C in this way is that the rotation shaft 122 of the rotation shaft 122 is shown in FIG.Axis center QIs set to be positioned below the reference plane C,Axis center QThe rotation locus R1 passing through the tip 123a of the engaging claw 123 around the center interferes with the tip 111a of the locking part 111, and the engaging claw 123 cannot be engaged with the locking part 111. Because.
[0009]
  That is, by setting the axis Q of the rotating shaft 122 above the reference plane C as shown in FIG.Engaging claw 123The tip 123a of,As shown by the two-dot chain line in FIG. 9, the tip 123a is centered on the axis Q.Trajectory R2 drawn throughOf the locking portion 111Interferes with the tip 111aTherefore, when the clamp body 121 is rotated about the rotation shaft 122 as a rotation fulcrum,Tip 123aCan be engaged and disengaged without causing the engaging portion 111 to interfere with the tip 111a.
[0010]
  In other words, the clamp body 121 is rotatedEngaging claw 123When engaging the engaging portion 111 of the coupled body 110 with the tip 123 a of the engaging claw 123 and the engaging portion 111.Tip 111aIn order not to interfere with each other, the axis Q of the rotating shaft 122 of the clamp body 121 must be positioned above the reference plane C.
[0011]
As described above, since the axis Q of the rotating shaft 122 of the clamp body 121 must be provided above the reference plane C, the rotating shaft 122 and the bearing 103 that supports the rotating shaft 122 are coupled. The outer surface of the body 100, that is, the upper wall surface 102 in FIG. 9 must be positioned and attached. For this purpose, as shown in FIG. 9, a U-shaped protrusion projecting above the upper wall surface 102 is provided. The installation wall 101 is formed, the bearing 103 is formed on the opposing walls 101 a and 101 a of the protruding wall 101 facing each other, and the rotation shaft 122 is supported on the bearing 103.
[0012]
  For this reason, as shown in FIG.Upper wall surface 102The outer shape of the combined body 100 is increased from the outside, and the outer shape of the combined body 100 is increased, which is not preferable from the viewpoint of appearance. Further, when the combined body 100 is moved, the clamp body 121 hits an external object and is damaged. .
[0013]
[Problems to be solved by the invention]
  As described above, in the conventional clamping device, since the axis Q of the rotation shaft 122 of the clamp body 121 must be provided above the reference plane C, the rotation shaft 122 is provided on the outer surface of the coupling body 100. That is, it is positioned above the upper wall surface 102Must be installedTherefore, it is necessary to provide a projecting wall 101 that forms a bearing above the upper wall surface 102, a bearing 103 is provided on the projecting wall 101, and the rotation shaft 122 is supported on the bearing 103.
[0014]
For this reason, the projecting wall 101 and the clamp body 121 project outward from the upper wall surface 102 of the combined body 100. As a result, the outer shape of the combined body 100 becomes large and is not preferable from the viewpoint of appearance. There is a problem that the clamp body 121 hits an external object and is damaged.
[0015]
[Means for Solving the Problems]
  This invention was made in view of the above circumstances, and the invention according to claim 1 isThe coupling body is formed with an open concave clamp chamber, bearings are formed on opposite side walls of the clamp chamber, and the front wall of the clamp chamber is directed from the front end to the base of the front wall. In the bearing of the combined body formed with an inclined wall surfaceRotating shaft that is pivotally supportedOr a bearing on which a pivot shaft formed on a side wall of the clamp chamber is pivotally supported, and the coupling body includesAn engaging claw that engages with and disengages from a locking portion provided on the coupled object to be coupledAnd disposed in the clamp chamberA clamp device comprising a clamp body, wherein the coupled body is coupled to or uncoupled from the coupled body.
  A bearing formed on the coupling body or a bearing formed on the clamp bodyWhile forming in the long hole,The major axis is the tip of the locking part or the tip of the engaging clawIn the coupled state, the bearing and the pivot shaft are slidably fitted so that the clamp body can move in the direction in which the long axis extends.An urging means for urging the clamp body in a direction in which the engagement claw is pressed against the locking portion;When the urging means is formed by an elastically deformable protruding piece integrally provided on the clamp body, and the clamp body is moved in the direction of the locking portion by the sliding and is in the coupled state. In addition, the tip of the projecting piece abuts against the inclined wall surface, and the projecting piece is elastically deformed. The projecting piece is positioned on the opposite side of the projecting piece with the bearing and the rotation shaft as a boundary. A coil spring arranged by fitting both ends to a bottom wall and the clamp body, wherein the clamp body is biased in a direction in which the engagement claw engages with the locking portion. ToIs.
[0016]
  The invention according to claim 1 configured as described above is configured such that the long axis of the bearing formed on the coupling body or the bearing formed on the clamp body is set to the leading end of the locking portion or the leading end of the engaging claw. Since it is formed in a long hole, pass the pivot shaft or bearing of the clamp body through the tip of the engaging claw.Locking wallEven if it is positioned below the reference plane including the line perpendicular to theUse the tip as a locking partWhen rotating the clamp body to be locked, the rotation shaft or bearing of the clamp body is provided on the coupling bodyAlong the bearingSince it moves in the front end direction of the locking portion, it can be engaged without interfering with each other.
[0017]
  Therefore, the protruding wall to which the clamp body is attached issideTherefore, the outer shape of the combined body can be reduced and the appearance is not impaired.
[0018]
  In addition, the amount of protrusion of the clamp body from the side surface of the combined body can be reduced, preventing it from hitting external objects during movementCan.
[0019]
Further, since the urging means for urging the clamp body in a direction in which the engagement claw is pressed against the locking portion is provided, the engagement claw and the engagement claw in the coupled state can be engaged even if the engagement claw is moved. It has the effect | action that the engagement of a stop part can be ensured.
[0021]
  Further, an urging means for urging the clamp body in a direction in which the engagement claw is pressed against the locking portion in the coupled state is formed by an elastically deformable protrusion piece integrally provided on the clamp body. Therefore, it has the effect | action that the structure of an urging means can be simplified.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment when the present invention is applied to a vacuum cleaner will be described with reference to FIGS.
[0023]
FIG. 1 is a side view of a part of the vacuum cleaner 1, in which 10 is a main body case as a joined body, and a dust collection chamber 11 is formed inside the main body case 10. An electric blower chamber 12 is formed on the downstream side of the dust collection chamber 11. A vent hole (not shown) is formed in the rear wall (wall on the electric blower chamber 12 side) 11a of the dust collection chamber 11, and the front wall (wall on the dust collection chamber 11 side) of the electric blower chamber 12 is formed. A ventilation hole 12b is formed in 12a, and a ventilation hole (not shown) is formed in the rear wall 12c.
[0024]
  A dust collection bag 20 is detachably accommodated in the dust collection chamber 11 through an opening 11b formed above the dust collection chamber 11, and an opening (not shown) is opened in the dust collection bag 20. The frame plate 21 is attached to the front wall 11c of the dust collecting chamber 11.Provided not shownBy being attached to the attachment member, the dust collection chamber 11 is accommodated.
[0025]
In addition, a suction port 13 communicating with the dust collecting chamber 11 is formed in the front portion of the main body case 10, and a connection pipe 31 of a suction hose 30 is detachably attached to the suction port 13, In a state where the connection pipe 31 is connected to the suction port 13, the tip 31 a of the connection pipe 31 penetrates into the dust bag 20 through the opening shown in the figure formed on the frame plate 21.
[0026]
The main body case 10 is provided with an opening / closing lid 14 that closes the opening 11b of the dust collecting chamber 11.
[0027]
In the electric blower chamber 12, an electric blower 40 including an electric motor 41 and a blower 42 that is rotationally driven by the electric motor 41 is accommodated via support bodies 43 and 44 made of an elastic body. When the electric blower 40 is housed in the electric blower chamber 12, the suction opening (not shown) formed on the front side of the fan cover 42a of the blower 42 corresponds to the vent hole 12b formed in the front wall 12a. It is.
[0028]
  A vent hole 15a is formed behind the rear wall 12c of the electric blower chamber 12 of the main body case 10 and a partition wall 15 is provided. The partition wall 15 is surrounded by the rear outer wall 16 of the main body case 10. Thus, an exhaust chamber 17 having an opening 17a at the rear is formed. Also,Rear outer wall 16An engaging recess 16b is formed in the bottom wall 16a.
[0029]
1, 2, and 6, the upper surface of the rear end portion of the main body case 10 is formed with a recess 18 into which an engagement claw 73 of a clamp body 71 of a clamp device 70 described later enters. The rear wall of the recess 18 serves as a locking portion 18a, and the locking portion 18a, that is, the wall surface 18b of the rear wall functions as a locking surface for locking the engaging claw 73.
[0030]
  Also,The exhaust chamber 17The opening 17a is normally closed by a lid 50 as a combined body detachably attached. A rib 51 is formed on the inner surface of the lid 50 to form a peripheral wall 51, and a plurality of exhaust holes 52 formed in a slit shape are formed in a region surrounded by the peripheral wall 51.
[0031]
Further, a filter F made of foamed urethane foam or the like having air permeability is detachably attached to the peripheral wall 51, and this filter F supplements fine dust contained in the exhaust air. When F captures a large amount of fine dust, the lid 50 is removed from the main body case 10, and then the filter F is taken out and washed with water, for example, to remove the fine dust, and then attached to the lid 50 again. Is attached to the main body case 10.
[0032]
The lid 50 is used as a combined body because the bonded body in the present invention refers to an object in which a clamp device 70 described later is disposed, that is, attached, and the main body case 10 is connected to the bonded body. This is because it is an object that is coupled to the combined body by the clamping device 70.
[0033]
Further, an engagement protrusion 53 that engages with the engagement recess 16b is formed at the lower end of the lid 50, and a clamp chamber 54 in which the clamp device 70 is disposed is formed at the upper part. Yes. As shown in FIGS. 2, 3 and 4, the clamp chamber 54 includes a bottom wall 55, side walls 56 formed opposite to each other on both sides of the bottom wall 55, a front wall 57 and a rear wall having inclined wall surfaces 57a. In addition to being formed by a space surrounded by 58, a rectangular opening 59 is formed above.
[0034]
Each of the side walls 56 facing each other is formed with bearings 60 facing each other as shown in FIGS. 3 and 4, and the bearings 60 are arranged at both ends as shown in FIGS. Each is formed into a semicircular elongated hole shape centered on P1 and P2, respectively, and the direction of the long axis, that is, the direction of the line passing through both centers P1 and P2 as shown by the one-dot chain line L1 in FIGS. It is set in a direction passing through the tip of the locking portion 18a.
[0035]
  Further, the position where the bearing 60 is formed passes through the distal end portion 73a in a state where an engaging claw 73 of a clamp body 71 described later is engaged with the engaging portion 18a as shown in FIG. Locking surface, that is, the rear wall of the recess 18Wall surface 18b of the locking portion 18aIt is a part below the plane including the line L2 orthogonal to the reference plane C.
[0036]
Accordingly, the position where the bearing 60 is provided can be formed below the upper wall surface 50a of the lid 50 as shown in FIGS. In other words, since it is not necessary to provide the position where the bearing 60 is provided above the outer side surface, that is, the upper wall surface of the lid 50 as in the conventional case, the protruding wall for providing the bearing 60 protrudes from the outer side surface. It is not necessary to form them.
[0037]
Therefore, the outer shape of the lid 50 does not increase, the appearance is not impaired, and the amount of outward protrusion of the clamp body 71 described later can be reduced. It is possible to prevent that.
[0038]
  The width dimension of the short axis of the bearing 60 and the diameter dimension of the semicircular shape areTo be described laterThe diameter of the rotating shaft 72 is set slightly larger so that the rotating shaft 72 formed on the clamp body 71 can slide.
[0039]
Further, the front wall 57 is formed lower than the upper portion of the opening 59, and the inner wall surface is a curved wall surface 57a having a curved surface gradually inclined in the direction of the bearing 60 from the upper end portion, that is, the tip portion toward the base portion. Is formed. The inclined wall surface 57a is provided at a position corresponding to a portion between the rotating shaft 72 and the engaging claw 73 provided on the clamp body 71 of the clamp device 70 described in detail later.
[0040]
  A coil spring 80, which will be described later, is disposed on the rear wall side of the bottom wall 55.one endIs provided with a projection 55a.
[0041]
Next, a clamp device 70 which is disposed in the clamp chamber 54 and puts the lid 50 which is a joined body and the main body case 10 which is a joined body into a coupled state or a non-coupled state is shown in FIGS. 2, 5 and 6. Based on this explanation.
[0042]
The clamp device 70 is composed of a clamp body 71 made of a synthetic resin, and the clamp body 71 is directed downward on the ceiling wall 71a and both longitudinal edges of the ceiling wall 71a as shown in FIGS. The side walls 71b are integrally formed and face each other, and the cross section in the direction orthogonal to the longitudinal direction is formed in a U-shape. Further, each of the both side walls 71b is formed with a pivot shaft 72 (only one is shown in FIG. 5) formed to project outward as shown in FIG. The rotating shaft 72 is slidably fitted to bearings 60 formed on both side walls 56 of the clamp chamber 54.
[0043]
The rotation shaft 72 is fitted into the bearing 60 by elastically deforming the side walls 71b in a direction in which the side walls 71b approach each other.
[0044]
  Further, an engaging claw 73 formed by bending the ceiling wall 71 a at a substantially right angle is formed on one end side of the clamp body 71, that is, the main body case 10 side, and the engaging claw 73 and the rotating shaft 72 are formed. And a projecting piece 74 formed so as to hang downward from the ceiling wall 71a. The projecting piece 74 is elastically deformed, and as shown by a two-dot chain line in FIG. 6, the distal end portion 73a of the engaging claw 73 of the clamp body 71 contacts the distal end portion 18c of the locking portion 18a of the main body case 10. In this state, the tip 74a of the projecting piece 74 is in contact with a portion located above the inclined wall surface 57a of the front wall 57 of the clamp chamber 54, and a solid line in FIG.IndicatedIn the state where the engaging claw 73 is engaged with the locking portion 18a,Projection 74The front end portion 74 a is located at a portion of the inclined wall surface 57 a on the base side of the front wall 57.
[0045]
That is, the protruding piece 74 is elastically deformed in a state where the engaging claw 73 is engaged with the engaging portion 18a, and the elastic force generated by this elastic deformation presses the engaging claw 73 against the engaging portion 18a. Thus, the frictional force between the engaging claw 73 and the locking portion 18a, that is, the wall surface 18b is increased, and the engaging claw 73 can be prevented from being detached from the locking portion 18a.
[0046]
Further, on the other end side of the ceiling wall 71a, that is, on the side opposite to the main body case 10 side, as shown in FIGS. 2 and 6, a projection 75 is fitted inside the coil spring 80 to position the coil spring 80. The ceiling wall 71a around the protrusion 75 functions as a support portion that supports the end portion of the coil spring 80.
[0047]
  Next, the arrangement or attachment of the clamping device 70 to the clamping chamber 54 will be described. First, the clamp body 71 is formed on the ceiling wall 71a.On the protrusion 75One end of the coil spring 80 is fitted. Next, the other end of the coil spring 80 isClamp chamber 54Is fitted to a protrusion 55a formed on the bottom wall 55 of the main body.
[0048]
  In the free state, the coil spring 80 extends downward from the lower edge of the side wall 56.Large protrusionThus, as described above, the projection 55a can be fitted.
[0049]
Next, both side walls 56 of the clamp body 71 are elastically deformed inward so as to approach each other as described above, and inserted into the clamp chamber 54 so that the rotating shaft 72 is fitted to the bearing 60. Thus, the clamp device 70 is disposed in the clamp chamber 54.
[0050]
In the state where the clamp device 70 is disposed in the clamp chamber 54, the clamp body 71 is counterclockwise in FIG. 2, that is, the engagement claw 73 in FIG. 2 by the urging force of the coil spring 80 with the rotation shaft 72 as a rotation fulcrum. Is biased in a direction to engage with the locking portion 18a.
[0051]
  Next, with the clamp device 70 disposed in the clamp chamber 54, the operation is performed when the lid 50 and the main body case 10 are coupled to each other and when they are not coupled, that is, removed.aboutexplain.
[0052]
First, a case where the lid 50 and the main body case 10 are coupled, that is, a case where the lid 50 is attached to the main body case 10 will be described.
[0053]
  In this case, the engaging protrusion 53 of the lid 50 to which the filter F is attached is engaged with the engaging recess 16b, and then the engaging protrusion 53 is rotated counterclockwise in FIG. In this state, the clamp body 71 of the clamp device 70 is offset so that the axis of the rotating shaft 72 is aligned or substantially coincides with the center P1 of the bearing 60. And the engaging claw 73Tip 73aThe trajectory K1 having the radius R to the end passes through the tip 18c of the locking portion 18a.Tip 73aSince it interferes with the front-end | tip part 18c of the latching | locking part 18a, the engaging claw 73 cannot be engaged with the latching | locking part 18a.
[0054]
  Therefore, as shown by a two-dot chain line in FIG. 6, the clamp body 71 is configured such that the axis of the rotating shaft 72 is the other of the bearing 60.Center P2Move until it matches. In this state, the center P2 and the engaging claw 73Tip 73aSince the trajectory K2 having the radius R as the radius passes through the outermost surface of the tip 18c of the locking portion 18a, the engaging claw 73 can be engaged with the locking portion 18a. In this state, that is, in a state where the tip end portion 73a is in contact with the outermost surface of the locking portion 18a, the tip end of the projecting piece 74 is in contact with a portion above the front wall 57 (see FIG. 6).
[0055]
In this state, that is, when the axis of the rotating shaft 72 is made coincident with the center P2 of the bearing 60, the urging force of the coil spring 80 causes the clamp body 71 to rotate counterclockwise around the rotating shaft 72 as a rotation fulcrum. The engaging claw 73 engages with the locking portion 18a in the state shown by the solid line in FIG. In this engaged state, the projecting piece 74 is elastically deformed, and the tip thereof moves along the inclined wall surface 57a of the front wall 57 and comes into contact with the portion on the base side, and the projecting piece 74 is elastically deformed. Due to the generated urging force, the engaging claw 73 engages with the locking surface of the locking portion 18a, that is, the wall surface 18b, and the engaging claw 73 is detached from the locking portion 18a due to vibration or the like. It is to be prevented.
[0056]
Next, when the coupling between the lid 50 and the main body case 10 is released, that is, when the lid 50 is removed from the main body case 10 (a large amount of fine dust is captured in the filter F and removed by washing or a new one) In the case of replacement with the coil spring 80, the fingertip is applied to the rear end of the clamp body 71, that is, the upper surface on the side where the projection 75 is provided, and the lower end of the rotating shaft 72 against the urging force of the coil spring 80. Is pivoted clockwise with the pivot as a pivot. Then, the rotating shaft 72 is disengaged from the locking portion 18a through the locus K2 about the center P2 of the bearing 60.
[0057]
  Next, the lid 50 is rotated by a predetermined amount in the clockwise direction with the engaging protrusion 53 as a rotation fulcrum, and the engaging protrusion 53 is removed from the engaging recess 16b, whereby the lid 50 is removed from the main body case 10.RemovedThereafter, the filter F is removed from the lid 50 and washed.
[0058]
  As described above, the clamp device 70 is formed in a long hole in which the bearing 60 formed on the lid 50 which is a combined body has a semicircular shape at both ends and the long axis thereof is in the direction of the distal end of the locking portion 18a. In addition, the bearing 60 is connected to the engaging claw of the clamp body 71.73 tip 73aThroughLocking portion 18aEven if the engaging claw 73 is provided below the flat surface including the line orthogonal to the locking surface, that is, the wall surface 18b, ie, the reference surface,Tip 73aWhen the engaging claw 73 is engaged with the engaging claw 73 by moving the pivot shaft 72 of the clamp body 71 along the bearing 60.Tip 73aAnd the distal end portion 18c of the locking portion 18a can be engaged with each other without interfering with each other.
[0059]
  Therefore, it is not necessary to form a protruding wall for forming the bearing 60 to which the clamp body 71 is attached as shown in FIG. It can be made small and does not impair the appearance. Moreover, as shown in FIG. 7, the clamp body from the side surface of the lid 5071The amount of protrusion can be reduced so that it can be prevented from hitting and damaging external objects such as furniture during movement.Is a thing.
[0060]
Further, since the projecting piece 74 which is a biasing means for biasing the clamp body 71 in the direction in which the engaging claw 73 is pressed against the locking portion 18a is provided, the engagement claw 73 and the locking portion 18a Engagement can be ensured.
[0061]
  Further, the outer surface of the distal end portion 18c of the locking portion 18a is connected to the locking claw 73.Tip 73aSince the curved surface is formed so as to slide in, the engaging operation can be performed smoothly, and by adjusting the strength of the coil spring 80, the biasing force of the coil spring 80 can be used.The tip 73a of the engaging claw 73The sliding shaft 72 can be moved from the center P1 of the bearing 60 to P2 by sliding it along the curved surface of the distal end portion 18c of the locking portion 18a.
[0062]
In the above embodiment, the bearing 60 is formed on the side wall 56 of the clamp chamber 54 of the lid 50, and the rotation shaft 72 that can slide on the bearing 60 is formed on the clamp body 71. Conversely, a structure having a long hole shape similar to that of the bearing 60 is formed on the side wall 71b of the clamp body 71, and a rotating shaft that slides on the bearing is formed on the side wall 56 of the clamp chamber 54. It ’s good.
[0063]
  In the above embodiment, the urging means for pressing the engaging claw 73 of the clamp body 71 against the locking surface of the locking portion 18a is constituted by the projecting piece 74 formed integrally with the clamp body 71. IsLike the reference example shown in FIG.A plate spring 81 as an urging means bent in a substantially V shape is provided on the front wall 57 of the clamp chamber 54, and the engagement claw 73 is locked by the plate spring 81 via a protruding member 74 a formed on the clamp body 71. Part 18aWall 18bIt is good also as a structure urged | biased in the direction pressed against. When the urging means is constituted by the leaf spring 81 as described above, there is an advantage that the spring force of the leaf spring 81 can be easily set to a desired value by changing the plate thickness. However, when the biasing means is constituted by the projecting piece 74 formed integrally with the clamp body 71 as in the above embodiment, there are advantages that the number of parts is reduced and the assembly is easy.
[0064]
When the urging means is constituted by the leaf spring 81, it is desirable to form a rib 74b for preventing the protrusion member 74a from being deformed in the urging direction.
[0065]
In FIG. 8, since the urging means is a leaf spring 81 and the configuration provided with the projecting member 74a is different from the above embodiment, the other components are the same as those in the above embodiment, and therefore the same components. Are denoted by the same reference numerals.
[0067]
Moreover, although the said embodiment demonstrated the case where this invention was applied to the vacuum cleaner, ie, the case where a coupling body was made into the cover body 50 and the to-be-coupled body was made into the main body case 10, this is limited to this. Of course, it can be applied to other devices.
[0068]
【The invention's effect】
  As described above, the invention according to claim 1 is formed in the bearing or the clamp body formed in the combined body.Bearings in long holesBecause of the formation, pass the pivot shaft or bearing of the clamp body through the tip of the engaging claw.Locking wallEven if it is positioned below the reference plane including the line perpendicular to theUse the tip as a locking partWhen rotating the clamp body to be locked, the rotation shaft or bearing of the clamp body is provided on the coupling bodyAlong the bearingSince it moves in the direction of the distal end of the locking portion, it can be engaged without interfering with each other.sideTherefore, the outer shape of the combined body can be reduced, and the appearance is not impaired. In addition, since the protruding amount of the clamp body from the side surface of the combined body can be reduced, it is possible to prevent damage from hitting an external object during movement.Is a thing.
[0069]
Further, since the urging means for urging the clamp body in a direction in which the engagement claw is pressed against the locking portion is provided, the engagement claw and the engagement claw in the coupled state can be engaged even if the engagement claw is moved. This has the effect of ensuring the engagement of the stop.
[0070]
  Furthermore, the biasing meansIt is provided integrally with the clamp body, and its tip is provided on the combined body from the tip to the base.As you headA biasing force is applied in a direction in which the engaging claw is pressed against the locking portion as it moves along the inclined wall surface inclined in the direction of the rotating shaft or the bearing.ProtrusionConfigured byFrom the biasing meansThe effect is that the configuration can be simplified.
[Brief description of the drawings]
FIG. 1 is a side view of a part of a vacuum cleaner to which a position of a clamping device according to the present invention is applied.
FIG. 2 is a cross-sectional view of the clamp device (a view showing a state where an engaging claw is not engaged with an engaging portion).
FIG. 3 is a perspective view of a clamp chamber in which the clamp device is disposed.
FIG. 4 is a cross-sectional view of the clamp chamber.
FIG. 5 is a perspective view of a clamp body of the clamp device.
FIG. 6 is a cross-sectional view of the clamp device (a view showing a state in which an engaging claw is engaged with a locking portion).
FIG. 7 is a perspective view showing a state in which a coupled body is coupled to a coupled body by the clamp device.
FIG. 8 shows an urging means for urging the locking claw of the clamping device to the locking portion;Reference exampleFIG.
FIG. 9 is a cross-sectional view of a conventional clamping device.
FIG. 10 is a view showing a state in which a coupled body is coupled to a coupled body by the conventional clamping device.
[Explanation of symbols]
  10 Body case (to-be-coupled body)
  18 recess
  18a Locking part
  18c Tip of locking part
  50 Lid (joint part)
  54 Clamping chamber
  55 Clamping chamber bottom wall
  55a Bottom wall protrusion
  56 Side wall of the clamp chamber
  57 Front wall of clamp chamber
  57a Inclined wall surface provided on the lid (combined body)
  58 Rear wall of clamp chamber
  59 Clamping chamber opening
  60 Bearing
  70 Clamping device
  71 Clamp body
  72 Rotating shaft
  73 engaging claw
  73a Tip of engaging claw
  74 Projection (biasing means)
  75 Clamp body protrusion
  80 Coil spring

Claims (1)

The coupling body is formed with an open concave clamp chamber, bearings are formed on opposite side walls of the clamp chamber, and the front wall of the clamp chamber is directed from the front end to the base of the front wall. A rotating shaft that is pivotally supported by the bearing of the combined body in which an inclined wall surface that is inclined as it is formed , or a rotational shaft that is formed on the side wall of the clamp chamber is pivotally supported. A clamp body that has a bearing and has an engaging claw that engages and disengages a locking portion provided on the coupled body coupled to the coupled body, and is disposed in the clamp chamber. On the other hand, in a clamping device that puts the coupled body into a coupled state or a non-coupled state,
The bearing formed on the coupling body or the bearing formed on the clamp body is formed in a long hole, and the long axis is defined as the leading end of the locking portion or the leading end of the engaging claw in the direction in which the long axis extends. Fitting the bearing and the pivot shaft so that the clamp body can move,
An urging means for urging the clamp body in a direction in which the engagement claw is pressed against the locking portion in the coupled state is provided, and the urging means is elastically deformable integrally provided on the clamp body. When the clamp body is moved in the direction of the locking portion by the sliding to be in the coupled state, the tip of the protruding piece comes into contact with the inclined wall surface and the protruding piece To be elastically deformed,
A coil spring which is located on the opposite side of the projecting piece with the bearing and the rotation shaft as a boundary and is arranged with both ends fitted to the bottom wall of the clamp chamber and the clamp body, and the clamp body is The clamping device is biased in a direction in which the engaging claw is engaged with the locking portion .

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