JP3131212B2 - Shoe adapter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shoe adapter used for attaching a video light, a microphone, and the like to a camera, for example, a portable video camera.

[Summary of the Invention]

The shoe adapter according to the present invention raises the arm member to which the shoe is attached from substantially the same plane position of the base member via a rotation locking member which is locked at a predetermined raised and lowered position to a base member detachably mounted to the camera body. The arm member to which the shoe is attached is locked and held at a predetermined upright position when used, and can be stored by falling down to the base member side when not in use by configuring it to be pivotally locked at the position. Even if the camera body is attached to the camera body irrespective of whether the camera body is not used, the camera body can be used without any trouble in carrying and photographing.

[Conventional technology]

Conventionally, in this type of shoe adapter, the base member attached to the camera body and the arm member attached to the shoe are separately formed by sheet metal and connected by screws, and the screws are used when carrying or storing when not in use. It was designed to be removed and disassembled.

[Problems to be solved by the invention]

In the conventional base adapter, the base member and the arm member are assembled by tightening the screws.When not in use, the screws are removed and the base member and the arm member are separated, so assembling and disassembling when not in use. It takes time and effort, and in addition to the incomplete tightening of the screw to the base member of the arm member, by attaching a heavy video light, microphone, etc. to the shoe of the arm member, the arm member easily swings, This swing loosens the screws and changes the mounting angle of the arm member with respect to the base member, turning the video light, microphone, etc. in a direction deviating from the predetermined direction, reducing the lighting effect and causing unstable recording. Could be.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can easily set an arm member to which a shoe is attached without using an attaching operation to a base member, and can be folded while being attached to a camera body when not in use. It is an object of the present invention to provide a shoe adapter capable of performing the following.

[Means for solving the problem]

In order to achieve the above object, a shoe adapter according to the present invention provides a base member detachably attached to a camera body, a bearing portion having a required engaging portion formed in a rotation direction in a side direction, and a shoe at a tip end. At the base end of the attached arm member of a required length, a clutch shaft which is axially supported by the bearing portion and is engaged and disengaged by sliding in the axial direction with respect to the engaging portion is fixed. The base member is rotatably supported in the upright direction from the substantially same surface side via the clutch shaft and the bearing portion via the bearing portion, and is locked and held at least at the substantially same surface position and the upright position. It is.

[Action]

With this configuration, in use, the arm member with the shoe attached thereto is moved relative to the base member, and the clutch shaft with the arm member is slid with respect to the bearing portion of the base member. Is disengaged from the base member, and is turned upright. In this upright position, the bearing is engaged with the clutch shaft to hold and hold the arm member. When not in use, the arm member is turned down on the substantially same surface side of the base member. It is stored in a folded shape by locking and holding.

As described above, the arm member can be set in the use or non-use state only by the up-and-down rotation of the arm member with respect to the base member attached to the camera body.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, (1) shows the entire shoe adapter,
(2) is a base member attached to the camera body C,
A substantially rectangular plate that is long in the front-rear direction and formed of a synthetic resin material having a required thickness, and a rear half of the camera screw (4) provided with a dial (3) in a lower half thereof has an insertion hole (5). ) Is vertically formed, and a positioning projection (6) of the camera body C is protruded near the front side of the insertion hole (5).
A non-slip sheet (7) is adhered to the upper surface, and a bearing cylinder (8) is integrally provided on the front end surface of the base member (2) in the left-right direction.

(9) is an arm member, which is a substantially U-shaped metal having a required length,
An end cover (10) is inserted into the upper horizontal portion (9a), and a shoe (11) is placed on the upper surface of the upper horizontal portion (9a), and the upper horizontal portion (9a) is placed together with the end cover (10). ) Is tightened and fixed with screws (12).

The arm member (9) is bearing-connected to the base member (2) at the lower horizontal portion (9b) by a rotation locking mechanism (13) inserted into the bearing cylinder (8).

The rotation locking mechanism (13) includes a clutch shaft (15) having a locking claw (14) formed on a peripheral surface, a coil spring (16), and a spring pressing shaft (17) formed of a slippery resin material. The clutch shaft (15) has an outer diameter in the direction from the outer end to the inner end, the outer part (15a), the middle part (15b), and the inner part (15).
This middle part (15b) has a three-step smaller diameter in the order of c)
A locking claw portion (14) is formed at the same height as the outer portion (15a) and narrower in the inner end direction. The lower claw portion (14) of the arm member (9) extends axially from the outer end surface. An insertion hole (18) into which the 9b) is inserted is formed substantially in the same shape as the lower horizontal portion (9b),
Bolt insertion hole (19) in the direction orthogonal to this insertion hole (18)
Are formed in the outer part (15a) and the intermediate part (15b) in a stepped manner. Further, an insertion hole (20) into which the inner half small diameter portion (17a) of the spring holding shaft (17) is inserted in the axial direction from the inner end surface of the clutch shaft (15) is formed. An insertion hole (21) is formed, and a nut insertion hole (22) is formed in a direction perpendicular to the insertion hole (21).

On the other hand, a spiral step surface portion (23) is formed on one end opening side of the bearing cylinder portion (8) of the base member (2), that is, on the inner periphery on the side where the clutch shaft (15) is inserted. This step (23)
Are provided with two engagement grooves (24) and (25) with which the engagement claws (14) of the clutch shaft (15) are engaged. The engagement grooves (24) and (25) are One engaging groove (24) is formed at an interval of approximately 90 °, and both edges are tapered at the same angle (24).
a) and (24b), and the other engaging groove (25) is formed as a tapered surface (25a) with a gentle oblique angle at the edge on the one engaging groove (24) side. In addition, an engagement projection (26) with which the edge of the intermediate portion (15b) of the clutch shaft (15) is engaged is formed on the inner end side of the step surface portion (23). The outer half-large-diameter portion (17b) of the spring holding shaft (17) is formed to have an inner diameter in which the outer half-large-diameter portion (17b) of the spring holding shaft (17) is slidably fitted from the engagement projection (26) to the other end.

The connection between the base member (2) and the arm member (9) thus configured is performed by first inserting the arm member (9) into the lower horizontal portion (9b) through the insertion hole (18) of the clutch shaft (15). )
The clutch shaft (15) is fixed to the arm member (9) by inserting the bolt (27) through the bolt insertion hole (19) and tightening the nut (28) inserted into the stepped part. The nut (29) is inserted into the nut insertion hole (22). Then, this clutch shaft (15) is inserted into the bearing cylinder portion (8) of the base member (2) from one end side thereof, and one engagement groove portion (24) or (25) of the step surface portion (23) is formed. The locking claw (14) is inserted into. In this state the inner part (15c)
The insertion hole (20) on the side is open to the other end side.

Next, a coil spring (1) is applied to the outer peripheral portion of the inner portion (15c) of the clutch shaft (15) from the other end of the bearing cylinder portion (8).
6), and the inner end of the coil spring (16) is brought into contact with the other side of the engaging projection (26) of the bearing cylinder (8). In this state, the spring holding shaft (17) From the other end side, and the inner half small diameter portion (17a) is inserted into the insertion hole (20) of the clutch shaft (15).

Then, the inner space (17) of the spring holding shaft (17)
c) Insert the bolt (30) into the bolt insertion hole (21), screw it into the nut (29) inserted in the nut insertion hole (22), and tighten it. The stepped surface (17d) between the small diameter portion (17a) and the large diameter portion (17b) is entirely immersed in (8), and the clutch shaft (15)
And an outer end of the coil spring (16). In this state, a cap (31) is fitted to the other end of the bearing cylinder (8) to close it.

As a result, the coil spring (16) becomes the bearing cylinder (8)
The clutch shaft (15) is elastically interposed between the engaging projection (26) of the spring and the step surface (17d) of the spring holding shaft (17).
Is constantly biased inwardly of the bearing cylinder (8) so that the locking claw (14) is engaged with the engagement groove (24) or (25), and the clutch shaft (15) is engaged. Is stopped, and the arm member (9) is fixed to the base member (2).

In this state, by holding the arm member (9) and pulling the rotation locking mechanism (13) outward with respect to the bearing cylinder (8) of the base member (2), the clutch shaft (15) and the spring holding shaft ( 1
7) integrally compresses the coil spring (16) in the direction of the one end opening of the bearing cylinder (8), that is, slides against this elastic biasing force, and the locking claw (14) moves the bearing cylinder ( 8) Pull out from the coupling groove (24) or (25) on the side. When the arm member (9) is rotated forward or backward in this state, the clutch shaft (15)
Is also integrally rotated with respect to the bearing cylinder portion (8), and this rotation is performed in a state where the tip of the locking claw portion (14) rides on the step surface portion (23) and abuts on the stepped portion (23). The claw (14) is connected to the other engagement groove (2
According to (5) or (24), the clutch shaft (15) is returned and slid inward by the elastic biasing force of the coil spring (16) via the spring holding shaft (17), and the locking claw (14) is Clutch shaft (15) engaged with the engaging groove (25) or (24)
The arm member (9) is locked by the base member (2).
Is locked again at this rotational position.

Thus, the clutch shaft (15) of the rotation locking mechanism (13)
The engaging claw portion (14) of the bearing cylinder portion (8) engages with the engaging groove portion (24),
By being engaged with (25), the arm member (9) is locked and held with respect to the base member (2). In the illustrated example, when the arm member (9) is turned upright at a substantially right angle with respect to the base member (2), the locking claw (14) is brought into one engagement groove (2).
4), the arm member (9) is held in the used state, and when the arm member (9) is turned to the base member (2) side, the locking claw (14) is engaged with the other. The arm member (9) is held in the lying state, that is, in the housed state by being engaged with the groove (25).

Therefore, the base member (2) is brought into contact with the bottom surface side of the camera body C by engaging the positioning projection (6), and is fixed by tightening the camera screw (4) with the dial (3). When a light, a microphone M, or the like is used, the arm member (9) is raised and rotated to stand at the front side of the camera body C and is fixed to the front side thereof, and the shoe (11) attached to the one end horizontal portion (9a). , A video light, a microphone M, etc. are attached.

When not used, the arm member (9) is attached to the base member (2) with the microphone M and the like removed from the shoe (11).
When the camera body C is turned to the side, it is stored fixedly on the same plane as the base member (2), so that use of the camera body C alone is not hindered at all.

In this configuration, the locking claw portion (14) of the clutch shaft (15) in the used and non-used states, that is, in the upright state and the fall-down locking state of the arm member (9) with respect to the base member (2).
The engagement position between the engagement groove portions (24) and (25) of the bearing cylinder portion (8) is in an obtuse direction with respect to the longitudinal direction of the arm member (9).
In the illustrated example, the angle is set to 135 °, so that the clutch shaft (15) receives the force acting on the arm member (9) in the orthogonal direction on the cylindrical surface of the bearing cylinder (8). The force acting in the rotation direction is dispersed and the force acting on the engaging portion is reduced, and the arm member (9) is prevented from rattling against the base member (2) and swinging, so that the video light, the microphone, etc. can be reliably mounted. And can generate unpleasant noise due to rattling etc.
It does not become unstable even with the camera body.

The engagement claw (14) engages with the spiral groove (24) in the upright state of the arm member (9) with the engagement grooves (24) and (25) of the bearing cylinder (8). Engagement groove (24)
Is in the high part (23a) and the locking claw (14)
The engagement groove (25) with which the groove is engaged is formed in the low portion (23b), and the engagement groove (24) on the high portion (23a) side.
As described above, the rim of the symmetrically tapered surface (24a), (24a)
b) formed as the engagement groove (25) on the low portion (23b) side
Is formed such that the edge of the engaging groove (24) at the high portion is gentle and oblique and has a large tapered surface (25a).

Accordingly, when the arm member (9) is in the upright state, the locking claw (14) has the engaging groove (2) on the high portion (23a) side of the step surface portion (23).
4), the rotation is almost completely prevented, and as described above, the clutch shaft (15) resists the biasing force of the coil spring (16) in the axial direction with respect to the bearing cylinder (8). Unless the engagement of the locking claw (14) is released by pulling out and pulling it out, it will not be possible to fall down and turn, and it will be possible to reliably hold it in the use state.

In addition, even when the arm member (9) is in the down state, the locking claw (1)
4) is engaged with the engaging groove (25) of the low portion (23b) to prevent the rotation, but if it is slightly rotated, the locking claw (14) climbs over the engaging groove (25). That is, the engagement groove (25) has a low end portion (23b) of the spiral step surface (23) on one side of the mouth edge, and the other side has a gentle slope and a large taper surface (25a). The user can get over the vehicle and can rotate in the upright direction, so that the user can easily set the operating state.

As mentioned above, although one Example of this invention was described, this invention is not limited to this Example, It can change variously in the range which does not deviate from the summary of this invention.

For example, the engaging claw portion (14) is engaged with the engaging groove portions (24) and (25) formed in the bearing cylinder portion (8) of the base member (2) when the arm member (9) is in the standing state and the falling state. By forming one or more engagement grooves between the engagement grooves (24) and (25), the arm member (9) can be held in an inclined state, Lights and microphones can be used at different angles.

In the above-described embodiment, a groove (3a) is formed in the lower surface side of the dial (3) of the camera screw (4) attached to the base member (2) in the circumferential direction. When the camera is mounted on a tripod head (not shown), a positioning pin protruding from the head is escaped.

〔The invention's effect〕

As described above, the shoe adapter according to the present invention is provided at the base end of the arm member to which the shoe is attached, in the direction substantially orthogonal to the front-rear direction of the base member attached to the camera body, and The clutch shaft, which is supported by the bearing portion forming the portion and is disengaged and engaged by sliding in the axial direction with respect to the engaging portion, is fixed, and the arm member is disposed on the side of the base member relative to the base member. Since it is configured to be rotatable and locked and held at the standing use position and the storage position on the substantially same plane as the base member, the rotation operation of the arm member can be easily performed with one hand while attached to the camera body, and It can be done smoothly, can be set to the use state where a light, microphone, etc. are attached, and when not in use, it can be folded and stored by folding down the arm member without removing it from the camera body So-called one-touch operation can be stored compactly can be used without trouble in any way the camera body, the effect is large with a small portable video camera that is not particularly shoe is provided in the intensity Choice of the camera body.

[Brief description of the drawings]

1 is a perspective view of an example of a shoe adapter according to the present invention, FIG. 2 is an exploded perspective view, FIG. 3 is a plan view of a folded state, FIG. 4 is an enlarged cross-sectional view of a part, and FIG. FIG. 6 is a cross-sectional view of a part of the cylindrical portion, and FIG. 6 is a side view of the bearing cylindrical portion. In the figure, (2) is a base member, (4) is a camera screw,
(8) is a bearing cylinder, (9) is an arm member, (11) is a shoe, (14) is a locking claw, (15) is a clutch shaft, (16) is a coil spring, and (17) is a spring retainer. Axis, (2
4) and (25) are engagement grooves.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-113197 (JP, A) JP-A-63-210485 (JP, A) JP-A 1-125435 (JP, U) JP-A 2-125 20473 (JP, U) Jikai Sho 62-160432 (JP, U) Photographic Industry, Showa 46, Vol. 29, No. 5, 231, pp. 102, Stay Super Bracket (Showa 46) (June 29, 2016) Accepted by the Patent Office Archives) 1984 Photo Supplies Catalog No. 14, Asanuma Shokai Co., Ltd., QS Arm Shoe Head (Quick Set Type) and Action QS Grip, Nikko Photo Supplies Co., Ltd. Bracket E-196

Claims (1)

(57) [Claims] A base member detachably attached to the camera body, a bearing having a required engaging portion formed on an inner periphery of a bearing cylinder is provided in a direction substantially orthogonal to the front-rear direction of the base member; At the base end of an arm member of a required length having a shoe attached thereto, the arm is pivotally supported by the bearing portion, disengaged and engaged with the engaging portion by sliding in the axial direction, and elastically biased in the engaging direction. The arm member is fixed to the side of the base member via the clutch shaft and the bearing portion on the side surface side of the base member. When the bearing portion is disengaged from the engagement portion, the bearing portion is rotatable between a storage position and a standing use position on substantially the same plane as the base member, and is locked and held at each position. Featured shoe adapter .