JPH0430587Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a retractable camera in which a lens barrel is moved forward and backward at the front of the camera body, and the front cover is provided to be openable and closable with respect to the camera body. The present invention relates to an improvement in a lever connection structure suitable for use when rotatably connecting a side lever and a body side lever via a connection shaft.

[Conventional technology]

In the case of retractable cameras, by opening and closing the front cover that is rotatably attached to the camera body that makes up the main body, the lens barrel for photography can be moved forward and backward from inside the body. It is said to be composed of

By the way, in such a retractable camera,
A drawer lever extending from the lens barrel side within the camera body and an arm, which is a support lever extending from the front cover, are rotatably connected to each other. There are some problems with the connection structure. In other words, the conventional connection structure for such a lever is to assemble the lever and the arm with the shaft holes bored overlapping each other, and then fit the connecting shaft into the shaft hole, and use a mechanism to prevent it from coming off. Generally, a structure was adopted in which an E-ring or the like was set on the shaft. However, with such a conventional structure, it is troublesome and complicated to attach and detach the locking device such as the E-ring, and especially for small devices such as retractable cameras, the assembly process is troublesome and takes a lot of time. In addition, there is a risk of causing problems such as accidentally damaging other parts, etc. Furthermore, when removing the connecting shaft for maintenance such as maintenance, inspection, and various repairs, Its removal and reassembly is troublesome,
The drawback was that it took a long time to complete the work.

For this reason, it has been used since the 1970s as a device that allows for relatively easy assembly and disassembly of the lever and arm mentioned above through the connection shaft and disassembly for maintenance. - A configuration as shown in Publication No. 105426 has already been proposed, but in this case, the structure of each part is complicated, so the molding and assembly work is troublesome and complicated, and the operation in the connected state is difficult. This caused problems such as a lack of reliability.

That is, in the above-mentioned conventional example, when connecting and pivotally supporting the lever to the arm, a spring material is used in which a groove having a slot that opens toward the longitudinal end of the lever is formed in the lever. This is fixed and prepared inside the lever, and with the arm assembled to this lever, the connecting shaft is inserted into each shaft hole, and this shaft is inserted into the slot of the spring material. This structure was able to meet the above-mentioned requirements to a certain extent because it was inserted into the body and held by its elastic force. In this conventional example, by forming a tapered surface on the above-mentioned connecting shaft, it is configured to fit into the slot of the spring material, so that the shaft can be simply pressed from one side. It had the advantage that the shaft could be easily attached and detached.

[The problem that the idea aims to solve]

However, the above-mentioned conventional structure not only requires troublesome work such as fixing a spring material with longitudinal slots in the lever in advance, but also requires the slots to be fixed when pushing the connecting shaft into place. If the width of the spring is too large, the locked state tends to become unstable, and if it is too small, a large force is required to deflect the spring material, which poses a problem in terms of workability and operational reliability. In addition, in the conventional structure described above, it is necessary to form a tapered surface on the tip of the connecting shaft and one side edge of the neck in order to obtain a state of engagement with the spring material, which poses a major problem from a processing perspective. In particular, due to the presence of a tapered surface in the neck forming part, if the neck width is large due to the relationship with the thickness of the spring material, it is easy to wobble, and it is difficult to obtain a reliable pivoting state during use. This led to further problems.

The present invention was developed in view of the above-mentioned circumstances, and it is possible to connect the arm on the lid side and the lever on the camera body side with a simple structure, and
It is an inexpensive collapsible type that can be easily separated for maintenance, has excellent workability, and has the advantage of being able to strengthen the connection between the arm and the lever. The purpose is to obtain a lever connection structure for a camera.

[Means to solve the problem]

The lever connection structure of the collapsible camera according to the present invention includes a support lever protruding from the back side of the front cover that can be opened and closed on the front side of the camera body, and a guide groove on the camera body side, so that the base end side of the camera When rotatably connecting the drawer lever guided in the front-rear direction of the body with the connecting shaft, one of the connecting ends of each of these levers is inserted into the connecting shaft from the side of the lever. A pair of side plates each having a shaft hole to be held in a penetrating state are placed opposite to each other at a predetermined interval, and the other side plate has a shaft hole through which a connecting shaft passes through and is inserted between the opposite side plates of the other side. It is configured to be connected by the connecting shaft, and one end is rotatably supported between opposing side plates on the base end side of one lever, and the other end extends to the shaft hole position. A locking groove that is open toward the rotation direction and has a narrow opening end, and an externally operable protrusion that is bent toward the side of the lever from the side edge opposite to the rotation direction. A locking spring piece is provided between the opposing side plates, and a neck portion into which the locking groove of the spring piece is selectively engaged is formed in a portion of the connecting shaft corresponding to the spring piece, so that the locking groove of the spring piece is selectively engaged. By rotating the spring piece on the neck of the connecting shaft passed through the shaft hole and engaging it in the locking groove, the connecting shaft can be connected in a removable state and prevented from coming off.

[Effect]

According to the present invention, the connecting ends of both levers are combined together, and the connecting shafts inserted from the sides of the levers are combined with the shaft holes of both levers passing through, and the connecting ends of the levers are combined with each other, and the connecting shafts are inserted into the shaft holes of both levers and rotated to the side of one lever. Both levers can be freely rotated by rotating a locking spring piece that is pivotably supported, and by engaging the neck formed on the connecting shaft into the locking groove on the tip side to prevent it from coming off. In addition, during maintenance, etc., the spring piece can be externally rotated in the locking direction of the locking groove using a protrusion bent to the side of the lever, thereby making it possible to pull out the connecting shaft. , both levers can be easily separated.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

Figures 1 to 5 show an embodiment of the lever connection structure of a retractable camera according to the present invention. Figures 4 and 5
To explain briefly using figures a and b, numeral 1 is a camera body, 2 is a front cover that opens and closes an opening 1a provided at the center of the front part, and the lower end of the front cover 2 is connected to the camera body by a pivot 3. It is rotatably supported on the body 1 side. Further, an opening 1 is provided within the body 1.
In the part corresponding to a, there is a dark box 4 having a substantially housing shape.
A lens barrel 5 is housed in the dark box 4 so that it can move forward and backward from the opening 1a in front of the camera. This lens barrel 5 is
A pair of left and right lens barrel guide plates 6 forming the dark box 4
It is connected to the front cover 2 side by guide grooves 7 formed in holes a and 6b, and is configured to advance and retreat in the front and rear directions of the camera body 1 in accordance with opening and closing operations thereof.

In FIG. 4, film chambers (not shown) are formed in the left and right vacancies of the dark box 4, and the film 8 is configured to run along the back surface of the dark box 4. Further, 2a in the figure is a recess formed on the back surface of the front cover 2 facing the lens barrel 5, and furthermore, the body 1 described above has various other necessary mechanisms built therein, and the film 8. Needless to say, the camera is equipped with a back cover (not shown) for attaching and detaching the camera.

Further, in the figure, reference numeral 5a denotes a lens barrel holder having a built-in shutter mechanism, etc., and an arm 9 which is a supporting lever that engages with an engagement pin 10a of a drawer lever 10 within the body 1 and is connected to this lever 10. It is designed to be able to operate in conjunction with the front cover 2 via the front cover 2.

That is, in the collapsible camera having the above-mentioned configuration, the front cover 2 moves the lens barrel 5 forward and backward.
In order to give a click feeling to the opening/closing operation, an arm 9 is provided protruding from the back surface of the front cover 2 for support, and an engaging pin 10a and a roller that engage the arm 9 in the guide groove 7 of the lens barrel guide plate 6 are provided. Front and rear cam surfaces 12a and 12b are connected to and pivotally supported by a pull-out lever 10 having a roller 11, etc., and engage with this roller 11.
a pressing cam 1 having a
2 are arranged. In addition, 13a and 13b in the figure
1 is a pin protruding from the lens barrel guide plate 6 that guides the pressing cam 12 upward and downward; 14a and 14b are springs that bias the pressing cam 12 toward the roller 11; , the front lid 2
The roller 11 of the drawer lever 10, which moves as the drawer lever 10 opens and closes, swings around one of the pins 13a and 13b as a pivot point, and at this time, the urging force of the springs 14a and 14b provides an appropriate click feeling. It is given to the operator. Here, the specific structure of such a collapsible camera is substantially the same as that shown in, for example, Japanese Utility Model Application Publication No. 59-87034, and a detailed description thereof will be omitted.

Now, according to the present invention, the drawer lever 1 on the body 1 side of the retractable camera configured as described above is provided.
0 and the arm 9 on the side of the front cover 2, the structure described below is adopted to simplify the connection structure and facilitate the work of disassembly and reassembly during assembly and maintenance. The feature is that it can be done easily.

To explain this in detail, the drawer lever 10 is
As shown in FIGS. 1 and 2, it is composed of a pair of side plates 20a and 20b facing each other at a predetermined distance and a spacer 21 interposed in the longitudinal center of the side plates, and these members are connected to a caulking pin. 22
It is assembled and fixed at a and 22b. In addition, in such a lever 10, at the end (connection end) on the side connected to the arm 9, there are plates 20a, 20b on both sides.
Shaft holes 23a, 23b are bored through the lever 10, and both side plates 20a, 20 are formed at the connecting end of the lever 10.
A shaft hole 24 is also formed in the connecting end 9a portion of the arm 9 that is fitted into the space between the arms 0b.

A connecting shaft 25 for rotatably connecting the lever 10 and the arm 9 is fitted into these shaft holes 23a, 23b; 24 from the side of the lever 10 to connect the two. In this case, preventing the connecting shaft 25 from coming off in the axial direction is a problem.

The present invention is a component for preventing the connecting shaft 25 from coming off, as shown in an enlarged view in FIG. A locking spring piece 26 is used, the other end 26b of which extends to the shaft holes 23, 24 position, is opened toward the rotation direction, and the opening end portion is formed with a narrow locking groove 27, and By engaging the neck 25a formed on the connecting shaft 25 in the locking groove 27 of the spring piece 26 and locking it, the connecting shaft 25 can be easily and reliably assembled and fixed. . In the figure, 21a is a recess for rotatably arranging the spring piece 26 within the lever 10, and 27a is a recess formed at the base side of the locking groove 27 to determine the amount of elastic deformation of both side edges forming this groove 27. This is a notch to ensure that the shaft 25 is held in place.

Here, the above-mentioned connecting shaft 25 has shaft holes 23a, 2
3b; It is loosely inserted into the shaft 24, and is prevented from coming off in the axial direction by locking the shaft 25 with the locking spring piece 26 that characterizes the present invention as described above. Along with doing this,
By clamping the neck portion 25a of the connecting shaft 25 with the elastic force of the opening edge of the locking groove 27 of the spring piece 26, it is possible to obtain an assembled state in which rotation of the spring piece 26 is restricted.

Further, in this embodiment, the spring piece 26 is fixed by caulking the shaft hole portion of its one end 26a with the spacer 21 interposed between the pair of side plates 20a and 20b that constitute the lever 10. It is rotatably supported by being fitted onto one of the pins 22a and 22b (22b),
If such a configuration is adopted, the number of parts can be reduced, which has great practical advantages.

Furthermore, as shown in FIGS. 1 and 3, the spring piece 26 described above is bent laterally from the lower edge corresponding to the side edge opposite to the direction of rotation when the spring piece 26 is locked. It has a protrusion 28 that can be operated externally, and by pushing the protrusion 28 downwards on the lever using, for example, tweezers, the spring piece 26 is attached to the support shaft (22).
By rotating it around b), it can be detached from the neck 25a of the connecting shaft 25 due to its own elasticity, and can be easily removed in the unlocking direction.In this case, avoid damaging other parts. There are advantages such as no problems with damage, and since it is integrated with the lever 10, parts management is easy.

Further, according to the present invention, the connecting shaft 25 does not require a tapered surface for extruding the connecting shaft as in the conventional example described above, and thus the forming process of the connecting shaft 25 can be easily performed. It is also possible to use the parts provided as is.

According to the above-described configuration, the connecting shaft 25 with the supporting lever (arm 9) on the other side can be easily and reliably engaged by the rotation operation by the spring piece 26 that is integrally assembled with the lever 10. Since it can be assembled without stopping, it is easy to assemble and can be easily removed, making it especially effective when applied to retractable cameras that are desired to be downsized.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate. For example, in the embodiment described above, the locking spring piece 26 has a locking groove 27 with a narrow opening end that can lock and hold the connecting shaft 25.
Although a case has been described in which the lever 10 is rotatably supported inside one of the side plates 20b between a pair of side plates, the present invention is not limited to this.
It is sufficient to rotatably support the lever 10 at a required location, and various modifications can be considered as the supporting position, including the support shaft of the lever 10.
It is sufficient that one end is pivotally supported on the proximal end side in the longitudinal direction of 0. Of course, the shape of this lever etc. can also be modified as appropriate.

Furthermore, various modifications can be considered for the locking groove 27 formed at the tip of the spring piece 26 as long as it has a shape that opens in the rotational direction of the spring piece 26. The spring piece 26 is not limited to a plate spring, and may be made of various elastic materials.The spring piece 26 is not limited to a plate spring, and may be formed of various elastic materials. Any material that can be slightly elastically deformed may be used.

Furthermore, in the embodiment described above, the lever 10 on the camera body 1 side and the arm 9 on the front cover 2 side are connected to the connecting shaft 2.
5 shows the case where they are connected, but it is sufficient that one of these lever members is formed by a pair of side plates, and the other has a connecting end that fits between them. Needless to say.

[Effect of idea]

As explained above, according to the lever connection structure in the collapsible camera according to the present invention, the support lever on the front lid side and the pull-out lever 10 on the camera body side
One of the connecting ends with the lever is constructed by opposing a pair of side plates at a predetermined interval, each having a shaft hole through which a connecting shaft for both lever pivots is inserted from the side of the lever and held in a penetrating state. , the other has a shaft hole through which a connecting shaft passes through, and is configured to be inserted between opposing side plates of the other side and connected by the connecting shaft, and between the opposing side plates on the base end side of one lever. One end is rotatably supported and extended to the shaft hole position, and the other end is opened toward the rotation direction, and the open end has a narrow locking groove and a locking groove on the opposite side to the rotation direction. A locking spring piece formed with an externally operable protrusion bent from the side edge portion toward the side of the lever is provided between the opposing side plates, and a portion of the connecting shaft corresponding to the spring piece is provided. , the locking groove of the spring piece forms a neck portion into which it is selectively engaged, and the spring piece is rotated to lock the locking groove with respect to the neck portion of the connecting shaft passed through the shaft holes of both levers. By inserting the levers into the levers, the levers are connected in a removable state and prevented from coming off, so even though the structure is simple, the levers can be inserted through the shaft hole when the connecting ends of both levers are combined. By inserting the connecting shaft from the side and rotating the spring piece, the locking groove is engaged with the neck formed on the connecting shaft to prevent it from coming off, so both levers can be freely rotated. It can be connected easily, reliably, and firmly, and the spring pieces can be easily and firmly connected during maintenance, inspection, repair, etc.
By rotating the locking groove in the unlocking direction using the protrusion bent to the side, it is extremely easy to pull out the connecting shaft and separate and disassemble both levers. It has various excellent practical effects.

[Brief explanation of the drawing]

The figures show an embodiment of the lever connection structure in a collapsible camera according to the present invention, and FIG. 1 is a schematic side sectional view showing an enlarged main part thereof, and FIG. 2 is an enlarged sectional view of the lever connection part. Figure 3 is a schematic perspective view of a spring piece that is a feature of the present invention, Figure 4 is a schematic sectional view of the entire retractable camera to which the present invention is applied, viewed from the plane, and Figures 5a and 5b are FIG. 7 is a side sectional view showing the link mechanism of the front lid when the lid is opened and when the lid is closed. 1... Camera body, 2... Front lid, 9... Arm (supporting lever), 10... (drawer) lever, 20a, 20b... Side plate, 21... Spacer, 22a, 22b... Caulking pin , 23a, 2
3b; 24...Shaft hole, 25...Connection shaft, 25a...
... Neck, 26 ... Locking spring piece, 26a ... Rotating base end, 26b ... Rotating end, 27 ... Locking groove, 27
a...Notch, 28...Protrusion.

Claims (1)

[Scope of utility model registration request] A support lever protrudes from the back side of the front cover that is opened and closed when the lens barrel is moved forward and backward from the camera body, and a guide groove on the camera body side that allows the proximal end to move forward and backward from the camera body. In a retractable camera in which a pull-out lever guided in a direction is rotatably connected by a connecting shaft, one of the connecting ends of each lever is inserted into the connecting shaft from the side of the lever. A pair of side plates each having a shaft hole for holding the connecting shaft in a penetrating state are arranged to face each other at a predetermined interval, and the other side plate has a shaft hole for passing the connecting shaft therethrough and faces the other side. one end of the lever is rotatably supported between the opposing side plates on the proximal end side of the one lever, and the shaft hole A locking groove with a narrow width at the other end that extends toward the rotation direction and an external operation that is bent to the side of the lever from the side edge portion on the opposite side to the rotation direction. A locking spring piece formed with a flexible protrusion is provided between the pair of side plates, and a locking groove of the spring piece is selectively formed in a portion of the connecting shaft corresponding to the spring piece. A neck part is formed to be engaged, and the spring piece is rotated to the neck part of the connecting shaft passed through the shaft holes of both levers and engaged in the locking groove, so that the spring piece can be attached and detached. A lever connection structure for a collapsible camera characterized by being connected in a way that prevents it from coming off.