JP7107721B2 - Fixing device - Google Patents

Description

The present invention relates to a fixing device for fixing a base member and an object to be fixed.

2. Description of the Related Art Conventionally, there has been known a fixing device for fixing a base member and an object to be fixed such as a predetermined jig or substrate.

As an example, this type of fixing device includes, for example, a driver having a pin provided on a member to be fixed and biased upward by a spring member, and an engaging member provided on a base member that can be engaged with the pin. a cam case having a hole, wherein the driving body is axially pushed against the biasing force of the spring member to insert the pin into the engagement hole of the cam case, and then the driving body is rotated to push the pin into the engagement hole. to engage and fix. On the other hand, in the fixing device, the driving body is removed from the cam case by rotating the driving body in the reverse direction to disengage the pin from the engagement hole.

Also known is a fixing device that controls the sphere to retract inside the main body only while the operation member is operated from a position where the sphere physically protrudes to the outside of the main body (see Patent Document 1).

This fixing device includes a driving body for projecting a sphere to the outside of the main body, an operating body for moving the driving part, and a cam for retracting the sphere to the inside of the main body only while the operating body is being operated. Fixation devices are known. In this fixing device, the driving body is urged toward one end in the axial direction by a spring member, and the sphere is moved to the retracted position by the action of the cam only while the operating body is being operated.

Japanese Patent No. 56-42514

The former conventional fixing device is a device that fixes by combining a pair of components, and processing is required to attach the cam case to the fixed object, which increases the number of parts and manufacturing processes, resulting in an increase in production costs. is concerned.

Further, this type of fixing device is to be fixed in two steps of pushing operation and rotating operation, but the latter fixing device is convenient because it can be fixed only by pushing operation.

However, in the latter fixing device, since the ball member cannot be maintained at the retracted position, the fixation cannot be released unless the state of pressing the driving body is maintained, resulting in poor workability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing device that can reduce the production cost, has good workability, and can be fixed or released by a simple operation. and

A fixing device (10) according to the present invention has an axially movable drive body (30), an operating body (40) for moving and operating the drive body, and a plurality of through holes (15a) in the circumferential direction. a main body (15) covering at least the outer peripheral surface of the driving body; A rolling body (20) that moves between a position (H) and a retracted position (L) that is retracted inside the through hole, and the rolling body is arranged at the protruded position or the retracted position in conjunction with the operation of the operating body. a moving mechanism (50) for relatively moving the main body and the driving body so as to maintain the rolling body, wherein the rolling body has a cylindrical body, and the body has a circumferential characterized in that a protruding portion that protrudes with an enlarged diameter is formed .

According to the present invention, the fixing device can be attached and detached with one action when attachment and detachment are frequently required. In addition, since the fixing device can be attached and detached by a simple operation, the time required for attachment and detachment can be easily shortened, and the work efficiency can be improved. In addition, the receiving side of the fixing device does not need to be subjected to any special processing other than drilling, so that the production cost can be reduced and versatility is high.

It is a schematic diagram which shows the example of mounting|wearing of the fixing device which concerns on 1st Example. It is a schematic diagram which shows the structural example of the fixing device which concerns on 1st Example. FIG. 2 is a transparent view showing a configuration example of a fixing device according to the first embodiment; It is a schematic diagram for demonstrating the positional relationship of the 1st engaging part and 2nd engaging part which were formed in the inner surface of the main body of the fixing device which concerns on 1st Example. FIG. 4 is a schematic diagram showing a rotation driving mechanism of the rotor of the fixing device according to the first embodiment; FIG. 5 is a schematic diagram for explaining the basic operation of the moving mechanism of the fixing device according to the first embodiment; FIG. 6 is a schematic diagram showing a configuration example of a fixing device according to a second embodiment; FIG. 11 is a transparent view showing a configuration example of a fixing device according to a second embodiment; FIG. 11 is a schematic diagram for explaining the basic operation of the moving mechanism of the fixing device according to the second embodiment;

Hereinafter, embodiments of a fixing device according to the present invention will be described with reference to the drawings. In addition, the following examples do not limit the invention according to each claim, and not all combinations of features described in the examples are essential to the solution of the invention. .

(First embodiment)
First, a fixing device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG. 1A and 1B are schematic diagrams showing an example of attachment of the fixing device according to the present embodiment, FIG. 1A is a diagram for explaining an example of attachment of the fixing device, and FIG. A state diagram is shown. 2 is a schematic diagram showing a configuration example of the fixing device according to this embodiment, FIG. 3 is a transparent view showing a configuration example of the fixing device according to this embodiment, and FIG. FIG. 5 is a schematic diagram for explaining the positional relationship between the first engaging portion and the second engaging portion, and FIG. 5 is a schematic diagram showing the rotational driving mechanism of the rotor of the fixing device according to the present embodiment. 6A and 6B are schematic diagrams for explaining the basic operation of the moving mechanism of the fixing device according to the present embodiment, and FIG. 6(b) is a partially enlarged view showing a fixed state by the fixing device.
Further, in the following description, the up-down direction in FIG. 2 is the up-down direction of the fixing device, and the left-right direction in FIG. 3 is the left-right direction of the fixing device.

This embodiment is an example of a fixing device 10 for fixing a base member 2 and a member 4 to be fixed, as shown in FIG. It is fixed to the four corners of the member 4 for use.

As shown in FIG. 1, the fixing device 10 includes a main body 15 having a shaft portion 13 that can be inserted into the base member 2 and a head portion 11 having a larger diameter than the shaft portion 13, and a main body 15, as indicated by the solid line in FIG. A rolling element 20 that moves between a protruding position H that protrudes outward from the surface of the shaft portion 13 and a retracted position L that retreats inward from the surface of the shaft portion 13 as shown by the broken line in FIG. , and the rolling element 20 is maintained at the projecting position H or the retracted position L.

In the fixing device 10, the shaft portion 13 of the main body 15 is inserted into the holes 2a and 4a formed coaxially in the base member 2 and the member to be fixed 4, respectively, while the rolling element 20 is maintained at the retracted position L. After being inserted, the rolling element 20 is switched from the retracted position L to the projecting position H and maintained, whereby the rolling element 20 presses the inner surface of the hole 2a formed in the base member 2 and is fixed to the base member 2. be done. Further, the fixing device 10 fixes the member to be fixed 4 to the base member 2 by holding the member to be fixed 4 between itself and the base member 2 with the head portion 11 of the main body 15 .

Further, the fixing device 10 is removed from the base member 2 by switching the rolling element 20 from the projecting position H to the retracted position L and maintaining it.

As shown in FIGS. 1 to 3, the fixing device 10 moves an inclined surface 31 of a driving body 30, which will be described later, from a rolling retraction position L to a protruding position H, and moves the inner surface of the hole 2a formed in the base member 2. A cylindrical main body 15 having a rolling element 20 that can be engaged, a through hole 15a in which the rolling element 20 can be arranged, a driving body 30 that is housed inside the main body 15 so as to be axially movable, and a pushing operation. An operating body 40 for moving the driving body 30 with respect to the main body 15, and the main body 15 and the driving body so as to arrange and maintain the rolling body 20 at the projecting position H or the retracted position L in conjunction with the operation of the operating body 40. and a moving mechanism unit 50 that relatively moves 30 .

As shown in FIGS. 2 and 3, the rolling element 20 has a cylindrical main body having two projections 20a, 20a which are enlarged in diameter along the circumferential direction to the right and left of the central portion and project at an acute angle. The diameters of the projecting portions 20a, 20a are formed to be larger than the size of the opening on the outside of the through hole 15a, and are prevented from coming off from the through hole 15a to the outside. Note that the number and positions of the projecting portions 20a are not particularly limited.

In the fixing device 10, the fixing force is enhanced by bringing the projecting portion 20a into line contact with the hole portion 2a of the base member 2. As shown in FIG.

As shown in FIGS. 1 to 3, the main body 15 includes a shaft portion 13 that can be inserted through a hole portion 2a formed in the base member 2 and a through hole portion 4a formed in the member to be fixed 4, respectively; a head portion 11 having a larger diameter than the shaft portion 13 and having a step 11a for sandwiching the member to be fixed 4 between itself and the base member 2; 11a and integrally formed.

The main body 15 has a space portion 16 inside, and this space portion 16 communicates with a first space 16a formed inside the shaft portion 13 with a step 17, and a second space 16b formed inside the head 11 and having a larger diameter than the first space 16a.

In addition, a plurality of through holes 15a that connect the second space 16b and the outside and that can accommodate the rolling elements 20 are formed in the lower end side of the shaft portion 13 along the circumferential direction.

As shown in FIGS. 2 and 6, the driving body 30 is formed in a substantially columnar shape and arranged so as to be axially movable in the first space 16a in conjunction with the operation of the operating body 40. As shown in FIGS. A tapered inclined surface 31 gradually increasing in diameter toward the lower end is provided on the lower end side outer peripheral surface of the driving body 30 , and the inclined surface 31 is engaged with the rolling element 20 .

Further, by providing the inclined surface 31, the gap between the rolling element 20 and the driving element 30 can be adjusted so that the rolling element 20 can project properly when being inserted into the hole 2a of the base member 2 or fixed to the hole 2a. It can be adjusted to be positioned at position H or retracted position L.

As shown in FIG. 6(a), the rolling element 20 moves while rolling from the enlarged diameter side of the inclined surface 31 to the reduced diameter side by the downward movement of the driving body 30 with respect to the main body 15, and reaches the retracted position L. placed in On the other hand, as shown in FIG. 6(b), the rolling element 20 moves while rolling from the reduced diameter side of the inclined surface 31 to the enlarged diameter side by the upward movement of the driving body 30 with respect to the main body 15, and reaches the projecting position. H.

In this embodiment, the inclined surface 31 provided on the outer peripheral surface of the lower end of the driving member 30 is continuously inclined. The planes may be connected by inclined planes.

As shown in FIGS. 2 and 3, the operation body 40 is formed in a substantially cylindrical shape and includes a shaft 41 that can be inserted into the space 16 of the main body 15 and a diameter larger than that of the shaft 41. and a head 42 arranged axially movably in the space 16 of the main body 15 .

Although not shown, the operating body 40 is attached to the main body 15 so that the head 42 does not come off from the upper end of the space 16 of the main body 15 .

Further, as shown in FIG. 3, a coil-shaped spring member 44 is arranged in the second space 16b of the main body 15. The spring member 44 is arranged around the shaft 41 and and the step 17 to be retained in the main body 15 .

Therefore, the operating body 40 is held by the main body 15 in a state of being constantly urged upward by the elastic force of the spring member 44, and after the operating body 40 is pushed, the operating body 40 returns to its original state by the elastic force of the spring member 44. return to position.

As shown in FIGS. 2 to 5, the movement mechanism 50 is interlocked with the pushing operation of the operation body 40 and moves relative to the main body 15 in order to arrange and maintain the rolling bodies 20 at the protruded position H and the retracted position L. to control the movement of the driving body 30 .

As an example, as shown in FIGS. 3 and 4, the movement mechanism 50 is formed in a groove 51a and sawtooth shape continuously along the circumferential direction of the inner peripheral surface of the first space 16a of the main body 15. A first engaging portion 51 in which the first cam surfaces 51b are alternately arranged is opposed to the lower portion of the first engaging portion 51 along the circumferential direction of the inner peripheral surface of the first space 16a of the main body 15. A second engaging portion 53 having a second cam surface 53a continuously formed in a serrated shape and a second engaging portion 53 provided rotatably between the operating body 40 and the driving body 30. and a cylindrical rotor 55 having a plurality of projections 55a that engage with the engaging portions 51, 53 or the grooves 51a on the outer peripheral surface thereof.

In addition, the first cam surface 51b and the second cam surface 53a are set so as to have a relationship of being out of pitch with respect to one tooth of the cam in the axial direction. As a result, the projections 55a of the rotor 55 engage with the first and second engaging portions 51 and 53 and rotate.

Here, the operation of the moving mechanism section 50 will be described with reference to FIG. FIG. 5(a) shows the positional relationship between the projection 55a of the rotor 55 and the first or second engaging portions 51, 53 when the operating body 40 is not operated in the fixed state. FIG. 5(d) shows the positional relationship between the projection 55a of the rotor 55 and the first or second engaging portions 51, 53 when the operating body 40 is pushed in the fixed state, and FIG. ) shows the positional relationship between the projection 55a of the rotor 55 and the first or second engaging portions 51, 53 when the operating body 40 is not operated in the unlocked state, and FIG. 5(f) to FIG. 5(h). shows the positional relationship between the projection 55a of the rotor 55 and the first or second engaging portions 51 and 53 when the operating body 40 is pushed in the unlocked state.

In this embodiment, the fixed state refers to a state in which the rolling element 20 is arranged at the projecting position H and a part of the rolling element 20 protrudes to the outside, and the unfixed state refers to the state in which the rolling element 20 is retracted. A state in which the rolling elements 20 are arranged at the position L and can be retracted inside the main body 15 .

First, in the fixed state by the fixing device 10, the rolling element 20 is arranged at the projecting position H, and the protrusion 55a of the rotor 55 is engaged with the groove 51a of the first engaging portion 51 as shown in FIG. 5(a). match.

Next, when the spring member 44 is compressed and the operating body 40 is pushed down by the pushing operation of the operating body 40, the rotor 55 is pushed down and the protrusion 55a moves downward as shown in FIG. 5(b). After engaging with the second cam surface 53a, as shown in FIG. 5(c), the protrusions 55a move along the inclined surfaces formed on the cam surface 53a to the valleys of the recesses, thereby rotating the rotor 55. receives a rotational drive corresponding to the pitch of one tooth of the cam surface, and the rotor 55 rotates by that pitch.

When the pushing operation of the operating body 40 is released and the operating body 40 is pushed up by the restoring force of the spring member 44 to return to its original position as shown in FIG. 5(d), the rotor 55 is pulled up. , the protrusion 55a moves upward to engage with the first cam surface 51b facing the second cam surface 53a, and as shown in FIG. By moving along the inclined surface to the valley, the rotor 55 is further rotated by the pitch of one tooth of the cam surface.

At this time, the projections 55a of the rotor 55 are held in the valleys of the recesses of the first cam surface 51b, and the rotor 55 is held below the position in which the fixing device 10 is fixed. Therefore, the driving body 30 is held in a state moved downward from the position in which it is fixed with respect to the main body 15, and the rolling body 20 is arranged at the reduced diameter portion of the inclined surface of the driving body 30 at the retracted position L. Since it is held, the fixing device 10 is in the unlocked state.

Next, when the operating body 40 is pushed down again by the pushing operation of the operating body 40 in the unlocked state by the fixing device 10, the projection 55a of the rotor 55 moves downward as shown in FIG. 5(f). to engage with the second cam surface 53a facing the first cam surface 51b, and then move along the inclined surface formed on the second cam surface 53a as shown in FIG. 5(g). As a result, the rotor 55 rotates by the pitch of one tooth of the cam surface.

When the pushing operation of the operating body 40 is released and the operating body 40 is pushed up by the restoring force of the spring member 44 to return to its original position as shown in FIG. 5(h), the rotor 55 is pulled up. , the protrusion 55a moves upward to the side of the first cam surface 51b facing the second cam surface 53a, and moves along the inclined surface of the cam surface 51b into the groove 51a, thereby rotating the rotor 55. It rotates by the pitch of one tooth on the cam surface.

At this time, the projections 55a engage with the grooves 51a provided between the adjacent cams of the first cam surface 51b, and the rotor 55 is held in a state of being moved upward from the unlocked position. Therefore, the driving body 30 is held in a state in which it is moved upward from the position of the unlocked state by the fixing device 10 with respect to the main body 15, and the rolling elements 20 are arranged on the enlarged diameter portion of the inclined surface of the driving body 30. Since the fixing device 10 is held at the projecting position H, the fixing device 10 is in a fixed state. The fixing device 10 is fixed to the hole 2a of the base member 2 at the projecting position H. As shown in FIG.

By repeatedly operating the operating body 40 again, the rolling body 20 is operated to move between the retracted position L and the projecting position H. As shown in FIG.

In this manner, the moving mechanism unit 50 moves the projections 55a of the rotor 55 in conjunction with the pressing operation of the operating body 40, and the rotor 55 is rotationally driven by the movement of the projections 55a to achieve the first or second engagement. Engagement with portions 51, 53 or groove 51a moves driver 30 relative to body 15 so that rolling element 20 is located in extended position H or retracted position L. FIG.

The fixing device 10 of the present embodiment rotates the rotor 55 by the movement mechanism 50 each time the operation body 40 is pressed, and the protrusion 55a engages the first cam surface 51b. , the engagement with the groove 51a is repeated.

In addition, due to the engagement of the projection 55a with the first cam surface 51b, the driving member 30 moves downward with respect to the main body 15, and the rolling member 20 moves from the projecting position H to the retracted position L and then moves to the retracted position L. maintained at On the other hand, due to the engagement of the projection 55a with the groove 51a, the driving member 30 moves upward with respect to the main body 15, and the rolling member 20 moves from the retracted position L to the projecting position H and is maintained at the projecting position H. .

Therefore, in the fixing device 10, the rolling element 20 can be easily switched (moved) between the retracted position L and the projecting position H in conjunction with the pressing operation of the operating body 40. that state can be maintained.

The shape and pitch of the first cam surface 51b and the second cam surface 53a are appropriately set. Its shape and pitch are designed to engage with the cam surface 51b or to be inserted into the groove 51a. Further, one pressing operation of the operating body 40 refers to an operation in which the operating body 40 is reciprocated up and down once.

(Second embodiment)
Next, a fixing device according to a second embodiment will be described with reference to FIGS. 7 to 9. FIG.

FIG. 7 is a schematic diagram showing a configuration example of the fixing device according to this embodiment, FIG. 8 is a transparent view showing a configuration example of the fixing device according to this embodiment, and FIG. and FIG. 8B is a transparent view showing a fixed state by the fixing device. 9A and 9B are schematic diagrams for explaining the basic operation of the moving mechanism of the fixing device according to the present embodiment, and FIG. 9(b) is a partially enlarged view showing a fixed state by the fixing device.

Further, in the following description, the up-down direction in FIG. 8 is the up-down direction of the fixing device, and the left-right direction in FIG. 3 is the left-right direction of the fixing device.

In the first embodiment, the driving body 30 moves relative to the main body 15 in conjunction with the pushing action of the operating body 40. is moved with respect to the driving body 130 .

This embodiment, like the first embodiment, is an example of a fixing device 100 for fixing a plate-shaped member 4 to be fixed on the upper surface of a base member 2 . As shown in FIG. 9(b), the fixing device 100 has a projecting position H that projects outward from the surface of the main body 115, and a retracted position that retreats inward from the surface of the main body 115, as shown in FIG. 9(a). A rolling element 120 is provided that moves between L, and the rolling element 120 is maintained at the protruded position H or the retracted position L.

In the fixing device 100, the main body 115 is inserted into the coaxially formed holes 2a and 4a of the base member 2 and the member to be fixed 4, respectively, and then the rolling elements 120 are maintained at the projecting position H. Then, the rolling element 120 is fixed to the base member 2 by pressing the inner surface of the hole 2 a formed in the base member 2 . Further, the fixing device 10 is removed from the base member 2 by switching the rolling element 120 from the projecting position H to the retracted position L and maintaining it.

As shown in FIGS. 7 and 8, the fixing device 100 of the present embodiment moves an inclined surface 132 of a driving body 130, which will be described later, from a rolling retraction position L to a projection position H, and a hole formed in the base member 2 is mounted. 2a, a cylindrical body 115 having a through hole 115a in which the rolling body 120 can be arranged, and a driving body 130 housed inside the body 115 so as to be axially movable. , an operating body 140 for moving the main body 15 relative to the driving body 130 by rotating, and operating the operating body 140 to relatively move the main body 115 and the driving body 130 so that the rolling body 120 is moved to the projecting position H and the retracted position. and a moving mechanism unit 150 arranged and maintained at L.

As shown in FIGS. 7 and 8, the rolling element 120 has a spherical body, the diameter of which is larger than the opening of the outer end of the through hole 115a. It is held so as not to leave.

As shown in FIGS. 7 and 8, the main body 115 has a cylindrical portion with a space portion 116 therein, and this cylindrical portion is disposed around the lower portion of the driver 130 and formed on the base member 2. It can be inserted through the hole 2a and the through hole 4a formed in the member 4 to be fixed.

A pair of through-holes 115 b , 115 b are formed above the body 115 so as to cross the space 116 and allow the ends of a pin-shaped connecting body 160 connected to the operation body 140 to be inserted therethrough. A plurality of through-holes 115a that connect the space 116 and the outside and can accommodate the rolling elements 120 are formed along the circumferential direction and the vertical direction.

The shape of the through hole 115a is appropriately set according to the shape of the rolling element 120. As shown in FIG. Furthermore, the number and arrangement of the through-holes 115a are not particularly limited, and are appropriately set according to the fixing force required for the fixing device 100, the size of the main body 115, and the like.

As shown in FIG. 7, the driver 130 has a cylindrical portion with a space 130a therein. The driving body 130 is formed with a shaft portion 131 that can be inserted into the cylindrical portion of the main body 115 and a diameter larger than that of the shaft portion 131 , and is used to clamp the member to be fixed 4 between itself and the base member 2 . a head portion 133 having a step 136 , and the head portion 133 and the shaft portion 131 are integrally formed with the step 136 .

The shaft portion 131 has a lower end portion 131a to be inserted into the cylindrical portion of the main body 115, and a larger diameter than the lower end portion 131a. As shown in FIG. an upper end 131b integrally formed with the lower end 131a through a step 135 for engaging the member 44;

The spring member 44 is held by the upper end portion 131b of the shaft portion 131 and the main body 115, and the main body 115 is held in a state of being constantly urged downward by the elastic force of the spring member 44. As shown in FIG.

8 and 9, the outer periphery of the lower end of the shaft portion 131 has a plurality of tapered inclined surfaces 132 that gradually increase in diameter toward the lower end corresponding to the rolling elements 120. Surface 132 engages each rolling element 120 .

In addition, by providing this inclined surface 132, the gap between the rolling element 120 and the driving element 130 can be adjusted so that the rolling element 120 can project properly when being inserted into the hole 2a of the base member 2 or fixed to the hole 2a. It can be adjusted to be positioned at position H or retracted position L.

Then, as shown in FIG. 9A, the rolling element 120 moves while rolling from the enlarged diameter side of the inclined surface 132 to the reduced diameter side by the upward movement of the main body 115 with respect to the driving body 130, and reaches the retracted position L. placed in On the other hand, as shown in FIG. 9(b), the rolling element 120 rolls from the reduced diameter side of the inclined surface 132 to the enlarged diameter side due to the downward movement of the main body 115 with respect to the driving member 130, and the inclined surface is formed. Since it is arranged on the enlarged diameter side of 132, it is arranged at the projecting position H.

A through hole 138 is formed above the lower end portion 131 a of the shaft portion 131 , and a connector 160 attached to the main body 115 is inserted into the through hole 138 .

As shown in FIGS. 7 and 8, the operating body 140 includes a shaft portion 141 inserted into the space 130a of the driving body 130, and a head portion 133 of the driving body 130 having a larger diameter than the shaft portion 141. A head portion 142 is rotatably arranged on the upper surface, and the head portion 142 and the shaft portion 141 are integrally formed.

A protrusion 143 that protrudes in the vertical direction and extends in the horizontal direction is formed on the upper surface of the head 142 , and the user can grip the protrusion 143 to rotate the operation body 140 .

A through hole 145 for inserting a connecting body 160 attached to the main body 115 is formed at the lower end of the shaft part 141 , and the main body 115 and the operating body 140 are connected via the connecting body 160 .

The connecting body 160 is also inserted into the through-hole 138 of the driving body 130, and both ends thereof are caulked into the through-hole 115b of the main body 115 to be fixed.

As shown in FIGS. 8 and 9, the movement mechanism 150 is interlocked with the rotation of the operating body 140 and moves the driving body 130 to maintain the rolling body 120 at the protruded position H and the retracted position L. In contrast, the movement of the main body 115 is controlled.

For example, the moving mechanism section 150 includes a through hole 138 formed in the driving body 130 and a connecting body 160 inserted through the through hole 138 .

A through-hole 138 formed in the driving body 130 includes a cam surface 138a formed in a substantially V-shape so that a substantially central portion protrudes upward, and a connecting body 160 formed at both ends of the cam surface 138a. and first and second holding portions 139a and 139b.

The moving mechanism 150 moves the main body 115 vertically with respect to the driving body 130 by moving the connecting body 160 along the cam surface 138a to the first or second holding parts 139a and 139b by rotating the operating body 140. move to

In addition, the cam surface 138a has an upwardly inclined surface that pushes up the connecting member 160 against the biasing force of the spring member 44 between the first holding portion 139a and the second holding portion 139b. In the vertical movement control of the main body 115 by the rotating operation of 140, the main body 115 is pulled up once and then pulled down to a predetermined position. This makes it possible to easily prevent malfunction of the operating body 140 caused by the natural movement of the connecting body 160 .

Here, the operation of the moving mechanism section 150 will be described with reference to FIGS. 8 and 9. FIG.
First, in the fixed state by the fixing device 100, as shown in FIGS. 8(b) and 9(b), the rolling element 120 is arranged at the projecting position H, and the coupling body 160 is arranged at the first holding portion 139a. be.

Next, when the connecting body 160 is moved from the first holding portion 139a to the second holding portion 139b as shown in FIG. 8(a) by rotating the operating body 140, as shown in FIG. 9(a). , the main body 115 is pushed up and held with respect to the driving body 130, and the rolling elements 120 are arranged on the reduced diameter portion of the inclined surface of the driving body 130 and held at the retracted position L, so that the fixing device 10 is released. state.

Next, in the state of releasing the fixation by the fixing device 100, the operation body 140 is reversely rotated, and as shown in FIG. 9(b), the main body 115 is pushed down and held against the driving body 130, and the rolling elements 120 are arranged on the enlarged diameter portion of the inclined surface of the driving body 130 to reach the projecting position H , the fixing device 100 is in a fixed state.

The rolling element 120 is operated to move between the retracted position L and the projecting position H by repeatedly rotating the operating body 140 again.

As described above, the moving mechanism 150 rotates the operating body 140 to move the connecting body 160 from the second holding part 139b to the first holding part 139a along the cam surface 138a, thereby causing the rolling element 120 to move. The main body 115 is moved with respect to the driver 130 so as to be positioned at the projecting position H or the retracted position L.

The fixing device 100 of the present embodiment can easily switch (move) the rolling element 120 between the projecting position H and the retracted position L in conjunction with the rotating operation of the operating body 140 by the moving mechanism 150. At the same time, the state can be maintained until the next rotation operation of the operation body 140 .

Further, in the fixed state or the fixed release state, the main body 115 can reliably maintain the rolling element 120 at the projecting position H or the retracted position L by the biasing force of the spring member 44 .

The shape of the through-hole and the cam surface is not limited to the present embodiment, and can be appropriately set according to the size of each component.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present invention. For example, in the present embodiment, the bodies 15 and 115 are inserted into the holes 2a and 4a of the member to be fixed 4 and the base member 2 to fix the two members 2 and 4. A screw hole is formed on the 4 side, and a screw to be screwed into the screw hole is formed in the main body 15 or the upper end portion 131b of the shaft portion 131 of the driving body 130 so that the fixing device 100 is attached to the member to be fixed 4 in advance. I don't mind. In this way, the member to be fixed 4 can be attached to the base member 2 with one touch without positioning the member to be fixed 4 and the holes 2a, 4a of the base member 2. FIG. In this case, the step 11a formed at the boundary between the head portion 11 and the shaft portion 13 of the main body 15 shown in the first embodiment is not required.

It is also possible to combine the first embodiment and the second embodiment as appropriate. For example, first
In the embodiment, the rolling element 120 shown in the second embodiment may be used as appropriate.

Also, the configurations of the moving mechanism units 50 and 150 shown in the above examples are examples, and other well-known moving mechanism units may be used as appropriate.

H: protruding position, L: retracted position, 10: fixing device, 15a: through hole, 15: main body, 20: rolling element, 30: driver, 40: operating body, 50: moving mechanism

Claims (3)

an axially movable driver;
an operating body for moving and operating the driving body;
a main body having a plurality of through holes in the circumferential direction and covering at least the outer peripheral surface of the driving body;
It is held in the through hole and moves between a projecting position where it is pushed by the outer peripheral surface of the driving body and protrudes outward from the through hole as the driving body moves, and a retracted position where it retreats inside the through hole. a rolling element;
a moving mechanism that relatively moves the main body and the driving body so as to arrange and maintain the rolling body at the protruded position or the retracted position in conjunction with the operation of the operating body;
with
The fixing device , wherein the rolling element has a columnar body, and the body is formed with a protruding portion that expands in diameter along a circumferential direction and protrudes . 2. The fixing device according to claim 1, wherein the outer peripheral surface of the driving body has an inclined surface whose diameter gradually increases toward one end in the axial direction. The moving mechanism unit
a rotor rotatably arranged between the operating body and the driving body and having projections in the circumferential direction;
a cam surface formed on the body for engaging the projection and for moving the driver relative to the body to place the rolling element in the retracted position; and a cam surface for placing the rolling element in the extended position. A first engaging portion in which grooves for performing are alternately arranged;
The first engaging portion formed on the main body engages with the projection in conjunction with the pushing action of the operating body, drives the rotor to rotate, and interlocks with releasing the pushing action of the operating body. a second engaging portion that moves the protrusion to the cam surface or the groove between
3. A fixation device according to claim 1 or 2 , characterized in that it comprises:

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