JPS5965612A - Spring type turning gear - Google Patents

Abstract

PURPOSE:To make a turning gear lockable at an optional position, by installing a fixed cam secured to a bracket centering on a shaft, a movable cam or a roller attached to a turning member being inset in the shaft and a spring energizing to press the movable cam or the roller down to the fixed cam, in the turning gear. CONSTITUTION:A fixed cam 4 is secured to a bracket 2 centering on a shaft 3. A movable cam 6 is attached to a turning member 5. One side face of the fixed cam 4 is made up of a flat surface 4b where concave parts 4a are provided at intervals of 90 deg., while one side face of the movable cam 6 is made up of a plane surface where projections 6a are provided in opposition to each other. The movable cam 6 is pressed against the side of the fixed cam 4 by dint of a spring 7, and with this pressing force, these projections 6a and concave parts 4a are engaged with each other, thus they are positioned right. As turning force acts thereat, the spring 7 yields to some extent and these projections 6a and concave parts 4a are unlocked but again locked at another position. For your information, rollers are available instead of these projections 6a, if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spring-type rotating device, which is used to balance and lock the rotating member at an arbitrary position in a product having a rotating part, and to apply an arbitrary operating force to the rotating member. This relates to a spring rotation device that allows C1 to provide the following functions.

Examples of rotating parts for the above products include car door mirrors, door checks, gun nets, doors, truck bed doors, folding tables, chair reclining devices, copier covers, paper press plates, etc. It will be done.

Conventional rotating devices only have the function of rotating the product. For example, when considering opening and closing the lid of a certain product, it can be balanced, locked (stopped at a certain rotation angle position), and any other operation. In order to apply force, a separate balance, lock, or device for applying operating force is required in addition to the rotation device, which increases cost and stiffness.
There was a problem with the service.

淘、The above-mentioned balance refers to the balance between the rotational moment of the rotating member &J and the spring force of the spring that applies the operating force of the rotating member C2 in a rotating member that has a horizontal co-rotating axis. The rotation of the rotating member stops at the position.

The present invention has been made based on the above-mentioned circumstances, and provides an inexpensive and simple spring-type rotation device that has the above-mentioned functions for providing balance, locking, and operating force. It is.

Hereinafter, a concrete explanation will be given based on an embodiment using the non-inventive automobile Q] door mirror≦2.

In Fig. 1 (A), (B), and (C), the symbol 2 indicates the door is also a U-shaped bracket that is solidly layered with ■ and is made of a rigid body that does not cause deflection. The mirror main body 5 is rotatably supported on the rotating shaft 3 so that no distortion occurs even when subjected to external forces or the like. Then, cams 4 formed into a predetermined shape (-) are fixed to the upper and lower inner sides of the bracket 2 by welding or the like.

1. A cam 6 that engages with the cam 4 is fixed on both upper and lower surfaces of the mirror main body 5, and a portion 5b of the mirror main body 5 to which the cam 6 is fixed is made of phosphor bronze or other flexible material. Since it is made up of a plate having
It is designed to mesh with the

The fixed cam 4 has four concave grooves 4a at 90° intervals as shown in FIG. As shown in b), there are two protrusions 6a arranged 180 degrees opposite each other. Mira body 5 figure 1 (
)→The mirror 8 is attached to the partition wall 5a as a boundary 5c (41 is a rigid body, and the side 5b where the cam 6 is attached is a flexible plate such as a phosphor V copper plate υ) It consists of

Door mirrors for automobiles are used in the conditions shown in Fig. 1 (a) and (b) υ).

Next, a case will be described in which an external force is applied to the mirror body 5 in the above usage state. Figure 3 (a), (b) and Figure 4 (a), (b) are operation diagrams when external force P1 or P2 due to a collision etc. is applied to the mirror body 5, and the external force P
When + or P2 is applied to the mirror body 5, the protrusion 6a of the cam 6 slides on the slope of the groove 4a of the cam 4 and moves to the flat portion 4b as the mirror body 5 rotates. At this time, the protrusion 6a
When the external force P1 or P2 is removed while the is on the slope of s4a, the protrusion 6a of the cam 6 slides in the groove 4a of the cam 4 in the opposite direction (slidingly As a result, the mirror main body 5 returns to its original position.

By this rotation of the mirror body 5, the impact force on the mirror body 5 is alleviated.

1K, when the mirror main body 5 rotates and the protrusion 6a of the cam 6 comes out of the groove 4a of the cam 4 and rides on the flat part 4bt2, if the external force Pl or P2 is removed, the mirror body 5 will rotate in that state. The main body 5 is balanced and stopped.

-If you want to store the mirror body 5 by folding down the door 194111m when the door mirror is not in use, please refer to Figure 4), (
b) The external force P2 is applied to the protrusion 6a of the cutting edge cam 6.
is pulled out from the groove 4a of the cam 4 and passes through the flat part 41) to 90
It is sufficient to rotate the mirror main body 5 until it fits into the groove 4a provided at the rotated position. The stored state of the main unit 7 and main body 5 is shown in Figures 5 (day) and (b). In addition, when raising the door mirror during use, the operation described above can be reversed, and both operations can be easily performed manually.

In the above embodiment, the cam 4 is fixed to the mirror body 5C and used as a fixed cam, and the cam 6 is fixed to the mirror body 5C and used as a movable cam. 6 is fixed to the bracket 2 to form a fixed cam, and the cam 4
Exactly the same effect can be obtained even if the mirror is fixed to the main body 5 and a movable cam is used.

60] mentioned above was a combination of cams and cams,
This is also possible with a combination of a cam and a roller, which is shown in Figures 6 (a) and (b).

That is, the cam 9 is fixed to the cam 9 and used as a fixed cam, and the openings 10 are 81 mm of the cam 9.
9 a - The two mirrors are fixed to the main body 5 and used as a movable part.

In the case of O (2), the cam 9 used is divided into 180° (= 2 parts) and the circumferential surface of the cam 9 is divided into 2 parts by the method shown in Fig. 6 (B).
The roller lO is formed with two oppositely oriented inclined sliding surfaces 9a19a. The roller lO is fixed to two mirror bodies 5 with the rotating shaft 3 in between, and is biased by a spring 7. The two rollers 10 are pressed against the respective inclined sliding surfaces 9a, 9a.

Therefore, the roller 10 is always subjected to the force that causes it to move to the lower part of the inclined sliding surface 9a, and the mirror body 5 itself is affected by the above-mentioned force. In the direction U), the operating force is applied (/J).

In this υJ example as well, even if a human or other object collides with the mirror body 5, the mirror body 5 rotates and warps) to cushion the impact. Returning to position is Q].

The above U] Implementation flow side] See υ) In the case of 5σ, the part 5b that fixes the cam 6 or the roller 10 is formed with an edge as a leaf spring. Even without the spring 7, exactly the same effect can be obtained. Obtainable.

An example is shown in Fig. 7g2.

In FIG. 7C, the fixed cam is the fixed cam 4 shown in FIGS. 1 and 2, and is fixed to the bracket 2 in the same way as in FIG. It is fixed to the connecting plate 11 using the roller 10 shown in FIG. 9(a)C2.

The connecting plate 11 has one end inserted into the auxiliary shaft 12 fixed to the main body 5 of the mirror via a bushing 13, and the other end inserted into the rotating shaft 3, and can freely slide in the direction of the arrow. ing.

In this embodiment as well, the same effects as the cam-cam combination shown in FIG. 1 can be obtained, and the entire mirror body 5 can be made into a rigid body.

Further, still another embodiment is shown in FIG.

In FIG. 8, the fixed cam 14 and the movable cam 15 are engaged in a ratchet manner, and are rotatably movable in one direction f2 and locked in a state close to stepless locking in the other direction. be.

In this embodiment, when the above-mentioned external force acts on the mirror main body 5 in one direction, the movable cam 15 climbs over the knurled protrusion of the fixed cam 14 as the mirror main body 5 rotates C2. If the external force is smaller than the force required to overcome the above, the mirror main body 5 simply slides on the same protruding part (/J slope and rotates, and the external force is removed. If it does, it will slide down the slope in the opposite direction (-) and return to its original position and be locked.

In order to release the locked state and rotate the mirror body 5 in the other direction, the mirror body 5 and the spring 7 may be bent in the direction of the arrow in FIG.

As explained in detail above, the uninvented rotating device is a combination of a fixed cam and a movable cam (or roller), and a combination of a fixed cam and a movable cam (or roller), and
Although it has an extremely simple structure consisting of a J spring, it is possible to balance and lock the rotating member at any position, and to apply any operating force to the rotating member. Because it is equipped with functions, it can be used not only for car door mirrors, but also for car door checks, gun nets, doors, etc.
Or truck bed doors, folding tables, chair reclining locks, or copier lids, etc.
Practical Q: It can be widely used for rotating parts such as paper press plates.
] has an effect.

In addition, since the rotating device of the present invention has an extremely simple structure in accordance with the above-mentioned construction, the entire device can be constructed in 4 parts, which not only solves the space problem but also makes it economical. It is also advantageous.

4. Brief explanation of the drawings Figure 1 (a) is a plan view of an automobile door mirror Q using an uninvented spring-type rotating device, (b) is a cross-sectional view taken along line I-I of the same, and Figure 2 ), (b) are perspective views of the cam with two phases of C as above,
9- Figure 3 (a), middle) and Figure 4 (a), (b) are explanatory diagrams of the operation of the same as above, and Figures 5 (a) and (b) show the retracted state of the same Mira body as above. An explanatory diagram, and FIG. 6 is an embodiment of the same as above, (A) is a plan view of the main part, (B) is a perspective view of the cam, and FIGS. 7 and 8 are still other embodiments. FIG. 2 is a plan view showing the main part.

1... Door, 2... Bracket, 3... Rotating shaft,
4.9.14... Fixed cam, 5... Mira body, 6
．． 15... Movable cam, 7... Spring, 8... Mirror, 10... Roller, ll... Connecting plate, 12... Auxiliary shaft.

Patent applicant NHK Spring Co., Ltd. Agent Patent attorney Hideaki Sato -l 〇- -65- ? -” 8 (Mr. Aio Wakasugi, Director General of the Japan Patent Office, 1. Indication of the case, 1982 Patent Application No. 177189 2, Title of the invention: Spring type circulation device 3, Relationship with the amended person case: Patent applicant 4, Agent 8, Thinning C'J VU Tani (1) Specification page 9 line 20 "Surface view, -1 and "Figure 2 (
(a) and (ii) (c) is a perspective view of the main body of the same mirror,
-1? Add r-calo.

(2)

Claims (1)

[Claims] A fixed member C2 includes a fixed bracket, a rotating member rotatably supported on the bracket, and a fixed cam on the bracket side centered on the above shaft (= a fixed fixed cam, and a rotating member pivoted on the above shaft) Rotating member C2 consists of a movable cam or roller that rotates as a result of rotation, and a spring that presses and biases the movable cam or roller against the solid rectangular cam, and the rotation is caused by the spring force and the shape of the cam. 1. A spring-type rotation device characterized by having a mechanism configured to rotatably hold a member.