JP2000089331A - Mounting structure for lens assembly of camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide mounting structure for the lens assembly of a camera capable of attaching a lens to a camera main body through single operation. SOLUTION: As for the mounting structure; the base 17 of a lens barrel unit 11 is inserted and pushed into the guide parts 4 and 5 of a shoe member 2, so that a lens barrel 12 is moved forward against a spring member 14 and the base end face part 12c of the lens barrel 12 runs up onto the bearing surface part 3 of the shoe member 2. In such a state, the unit 11 is pushed in so as to bring a unit side electric contact 19 into contact with a shoe member side electric contact 9, and the base end face part 12c of the lens barrel 12 is aligned with a camera mounting hole part 7, then the base part 12a of the lens barrel 12 is inserted in the hole part 7 by the urging force of the spring member 14, so that the unit 11 is attached to the shoe member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a mounting structure for a lens assembly of a camera such as a CCTV camera.

[0002]

2. Description of the Related Art In a conventional mounting structure of a lens assembly of this type, a screw hole for a camera mount is provided on a front portion of a camera body, and a male screw portion is provided on a holder portion of a lens barrel unit. The lens barrel unit is attached to the camera body by being screwed into the camera mount screw hole, and power is supplied to the automatic aperture driving unit of the lens barrel unit by connector connection. Also,
The posture of the camera body and the lens barrel unit has been adjusted by controlling the thread cutting position.

In a CCTV camera, the back focus of a lens is shortened as the image pickup size is reduced, so that the rear lens of the lens is closer to the CCD focus position.

[0004]

However, in the above-mentioned conventional mounting structure for a lens assembly of a camera,
The lens barrel unit is rotated, and the male screw part of the lens barrel unit is screwed into the screw hole for the camera mount. This lens barrel unit is attached to the camera body, so the lens is attached to the camera body with one touch. There was a problem that it was not possible.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a lens,
An object of the present invention is to provide a mounting structure of a lens assembly of a camera which can be mounted on a camera body with one touch.

[0006]

According to a first aspect of the present invention, there is provided a camera lens assembly mounting structure which is provided on a camera body and is inserted laterally into both sides of a seat surface portion. A possible guide portion is provided to form a lateral insertion portion, and the seat portion has a camera mounting hole, and is connected to a circuit for controlling an aperture of a lens at the end of the lateral insertion portion. A shoe member having a plurality of shoe member-side electrical contacts, and a lens barrel inserted into a lens barrel holder having a hole provided in a base inserted into the lateral insertion portion of the shoe member and a holder body provided in the base. Then, the base side of the lens barrel is inserted so as to be able to enter and exit the hole, and a spring member is interposed between the spring receiver of the lens barrel and the spring receiver of the holder body, Due to the urging force of this spring member, A lens barrel unit having a unit-side electrical contact for pressing the spring receiving portion against the base and connecting to an automatic iris drive source on the base; and And inserting the base side of the lens barrel into the camera mount hole by the spring force of the spring member to bring the unit side electrical contact into contact with the shoe member side electrical contact. It is characterized by.

According to another aspect of the present invention, there is provided a camera lens assembly mounting structure, comprising:
2. The mounting structure for a lens assembly of a camera according to claim 1, wherein the shoe member is rotatable about a center O of a camera mounting hole.

With this configuration, the base of the lens barrel unit is inserted into the guide portion of the shoe member and pushed in while the lens barrel unit is detached from the shoe member, so that the base edge of the lens barrel unit is in the shoe position. The lens barrel moves forward against the spring member against the edge of the seat surface of the member, and the base end surface of the lens barrel rides on the seat surface of the shoe member.

In this state, when the lens barrel unit is further pushed in, the unit-side electrical contact comes into contact with the shoe member-side electrical contact and the base end surface of the lens barrel coincides with the camera mount hole. The base of the lens barrel is inserted into the camera mount hole by the urging force of the spring member, and the lens barrel unit is attached to the shoe member.

As described above, the base edge of the lens barrel abuts on the edge of the seat surface of the shoe member, and the lens barrel moves forward against the spring member, and thereafter, the base end face of the lens barrel. Since the portion coincides with the camera mounting hole and the base of the lens barrel is inserted into the camera mounting hole by the urging force of the spring member, the lens can be attached to the camera body with one touch.

[0011]

A mounting structure for a lens assembly of a camera according to the first aspect of the present invention is provided with guide portions which are provided on a camera body and which can be inserted from both sides of a seat surface from a lateral direction, and are provided with a lateral insertion portion. And a shoe member having a plurality of shoe member-side electrical contacts connected to a circuit for controlling the aperture of a lens at the end of the lateral insertion portion, the camera member having a hole for a camera mount in the seating surface portion. A hole is provided in a base inserted into the lateral insertion portion of the shoe member, and a lens barrel is inserted into a lens barrel holder having a holder body provided in the base, and a base side of the lens barrel is A spring member interposed between the spring receiving portion of the lens barrel and the spring receiving portion of the holder main body, the spring receiving portion being interposed between the spring receiving portion of the lens barrel and the spring receiving portion by the urging force of the spring member; Press against the base A lens barrel unit having a unit-side electrical contact connected to an automatic iris drive source on the base, wherein the lens barrel unit is inserted into the lateral insertion portion of the shoe member by inserting the base into the lens; The base side of the lens barrel is inserted into the camera mount hole by the spring force of the spring member to bring the unit-side electrical contact into contact with the shoe member-side electrical contact.

With this configuration, the base of the lens barrel is inserted into the guide portion of the shoe member and pushed in while the lens barrel unit is detached from the shoe member, so that the base edge of the lens barrel is in the shoe shape. The lens barrel moves forward against the spring member against the edge of the seat surface of the member, and the base end surface of the lens barrel rides on the seat surface of the shoe member.

In this state, when the lens barrel unit is further pushed in, the unit-side electrical contacts come into contact with the shoe member-side electrical contacts, and the base end surface of the lens barrel coincides with the camera mount hole. The base of the lens barrel is inserted into the camera mount hole by the urging force of the spring member, and the lens barrel unit is attached to the shoe member.

As described above, the base edge of the lens barrel comes into contact with the edge of the seat surface of the shoe member, and the lens barrel moves forward against the spring member, and thereafter, the base end face of the lens barrel. Since the portion coincides with the camera mounting hole and the base of the lens barrel is inserted into the camera mounting hole by the urging force of the spring member, the lens can be attached to the camera body with one touch.

Further, the lens barrel can be fitted into the camera mounting hole by the spring force of the spring member, and the optical axis can be aligned by the spring force of the spring member. When the contact comes into contact with the shoe member-side electric contact, the electric contact does not involve rotation, so that the electric contact does not touch another electric contact and is short-circuited.

According to a second aspect of the present invention, there is provided a camera lens assembly mounting structure according to the first aspect, wherein the shoe member is provided at a center of the camera mounting hole. It is rotatable about O.

With this configuration, not only can the same operation and effect as those of the first aspect of the invention be provided, but also by rotating the shoe member about the center O of the camera mounting hole, The mounting direction of the lens barrel unit can be changed.

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

A shoe member 2 is rotatably provided on the front surface of the camera body 1 of the CCTV camera. The shoe member 2 has guides having a U-shaped cross section on both sides of the seating surface 3 as shown in FIG. It has a lateral insertion part 6 formed by forming parts 4 and 5, and a circular camera mounting hole 7 is formed in the seat part 3. An upright wall 8 is formed on the seating surface 3 at the end of the lateral insertion portion 6, and a plurality of shoe member-side electrical contacts 9 are provided on the inner surface of the upright wall 8. These shoe member side electrical contacts 9
Is connected to a circuit built in the camera body 1 for controlling the aperture of the lens.

The shoe member 2 is rotatable about the center O of the camera mounting hole 7.
A CCD 10 is arranged on the camera body 1 so as to face the camera mounting hole 7.

The lens barrel unit 11 is shown in FIGS.
As shown in the figure, the lens barrel 12, the lens barrel holder 13, and the spring member 14 are provided. A ring-shaped spring receiving portion 15 is formed on the outer peripheral portion of the lens barrel 12 toward the base (rear lens) 12a thereof.
Is a lens (not shown) and an automatic iris drive unit (not shown)
Built-in.

The lens barrel holder 13 has a cylindrical holder body 16, and the base of the holder body 16 has a base 1 substantially equal to the seat surface 3 of the shoe member 2.
The base 17 has a circular hole 18.
Is formed. Then, the left end face portion 17a of the base 17
Are provided with a plurality of unit-side electrical contacts 19, and these unit-side electrical contacts 19 are connected to an automatic aperture driving unit. Further, a spring receiving portion 20 is formed at the tip of the holder body 16.

Then, the lens barrel 12 is inserted into the holder body 16 of the barrel holder 13, and the lens barrel 12
The base member 12a is inserted into the hole part 18 of the base 17 so as to be able to enter and exit, and a spring member 14 is interposed between the spring receiving part 15 of the lens barrel 12 and the spring receiving part 20 of the holder body 16. The spring receiving portion 15 is pressed against the base 17 by the urging force of the spring member 14 to form the lens barrel unit 11.

The left end face 17a of the base 17 of the lens barrel unit 11 is directed toward the opening 6a of the lateral insertion portion 6, and both sides of the base 17 are inserted into the guide portions 4 and 5 and pushed. , Base 12a of lens barrel 12
The lens barrel 12 moves forward against the spring member 14, and the base end face 12c of the lens barrel 12 The user rides on the seat 3 of the member 2.

In this state, the lens barrel unit 1
When 1 is pushed in, both electrical contacts 9, 19 come into contact with each other.
In this state, the base 12 a of the lens barrel 12 is biased by the spring member 14 so that the base end surface 12 c of the lens barrel 12 matches the camera mounting hole 7 of the shoe member 2.
Is inserted into the camera mounting hole 7, and the lens barrel unit 11 is attached to the shoe member 2.

As described above, the lens barrel unit 11
By inserting the base 17 of the lens barrel unit 11 into the guide portions 4 and 5 of the shoe member 2 and pushing the base member 17 away from the shoe member 2, the base edge of the lens barrel 12 The lens barrel 12 moves forward against the spring member 14 against the edge of the seating surface 3, and the base end surface 12 c of the lens barrel 12 rides on the seating surface 3 of the shoe member 2.

In this state, the lens barrel unit 1
When the unit 1 is pushed in, the unit-side electric contact 19 comes into contact with the shoe member-side electric contact 9 and the base end surface 12 c of the lens barrel 12 coincides with the camera mounting hole 7. As a result, the base 12a of the lens barrel 12 is inserted into the camera mounting hole 7, and the lens barrel unit 11 is attached to the shoe member 2.

As described above, the base edge of the lens barrel 12 comes into contact with the edge of the seat surface 3 of the shoe member 2, and the lens barrel 12 moves forward against the spring member 14, and thereafter, the lens Since the base end surface 12c of the lens barrel 12 coincides with the camera mount hole 7 and the base 12a of the lens barrel 12 is inserted into the camera mount hole 7 by the urging force of the spring member 14, the lens One-touch camera body 1
Can be attached to

Further, the lens barrel 12 can be fitted into the camera mount hole 7 by the spring force of the spring member 14, and the optical axis can be aligned by the spring force of the spring member 14. Further, when the unit-side electrical contact 19 contacts the shoe member-side electrical contact 9, the electrical contact does not come into contact with another electrical contact and is short-circuited because rotation is not involved.

Further, by rotating the shoe member 2 around the center O of the camera mounting hole 7,
The mounting direction of the lens barrel unit 11 can be changed.

As described above, in the mounting structure of the lens assembly of the camera according to the present invention, the base edge of the lens barrel contacts the edge of the seat surface of the shoe member, and this lens barrel is Move forward against the member, then
The base end of the lens barrel matches the camera mount hole, and the base of the lens barrel is inserted into the camera mount hole by the biasing force of the spring member. be able to.

Further, the lens barrel can be fitted into the camera mount hole by the spring force of the spring member, and the optical axis can be lined by the spring force of the spring member.
When the unit-side electrical contact comes into contact with the shoe member-side electrical contact, the electrical contact does not come into contact with another electrical contact and is short-circuited without rotation.

In the mounting structure of the lens assembly of the camera according to the present invention, since the shoe member is rotatable around the center O of the camera mounting hole, the shoe member is mounted on the camera member. By rotating about the center O of the camera mounting hole, the mounting direction of the lens barrel unit can be changed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a mounting structure of a lens assembly of a camera according to the present invention.

FIG. 2 is an arrow view from the X direction in FIG. 1;

FIG. 3 is a perspective view of a shoe member.

FIG. 4 is a longitudinal sectional view of a lens barrel unit.

FIG. 5 is an arrow view from the Y direction in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera main body 2 Shoe member 3 Seat part 4 Guide part 5 Guide part 6 Lateral insertion part 7 Camera mount hole 9 Shoe member side electrical contact 11 Lens barrel unit 12 Lens barrel 12a Base 12c Base end face 14 Spring member 19 Unit side electrical contacts

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Susumu Kawakami 73, Nanase, Oji, Nakano City, Nagano Prefecture Inside the R & D Headquarters, Kosina Co., Ltd. (72) Masazumi Nakamura 73, Nanase, Oaza, Nakano City, Nagano Prefecture Co., Ltd. Within the Development Division (72) Inventor Hironobu Takekuma 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Masaomi Iizumi 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama, Kanagawa Prefecture No. Matsushita Communication Industrial Co., Ltd. F-term (reference) 2H044 AE07 AJ06 BD16 EC08 HB03 2H101 EE08 EE13 EE25 EE32 EE61 EE93

Claims (2)

[Claims] 1. A laterally inserted portion is formed by providing guide portions provided on a camera body and insertable from both sides of a seating portion on both sides of the seating portion. A shoe member provided with a plurality of shoe member-side electrical contacts connected to a circuit for controlling the aperture of the lens at the end of the direction insertion portion; and a hole in a base inserted into the lateral insertion portion of the shoe member. And a lens barrel inserted into a barrel holder provided with a holder body on the base, a base side of the lens barrel inserted so as to be able to be inserted into and removed from the hole, and a spring receiving portion of the lens barrel. A spring member is interposed between the spring receiving portion of the holder main body and the spring receiving portion is pressed against the base by the urging force of the spring member. With contacts A lens barrel unit, wherein the lens barrel unit is inserted into the lateral insertion portion of the shoe member, and the base side of the lens barrel is inserted into the camera mount hole through the spring. A mounting structure for a lens assembly of a camera, wherein the unit-side electric contact is brought into contact with the shoe member-side electric contact by being inserted by a spring force of a member. 2. The mounting structure for a camera lens assembly according to claim 1, wherein the shoe member is rotatable about a center O of the camera mounting hole.