OPERATION APPARATUS

Abstract: An operator is prevented from slipping out when it is pulled, and an operating apparatus equipped with such an operator can be realized at lower production cost. A hole 14 is formed in the operator 11 and a member 12 to be operated is formed with a pawl 16, so that the pawl 16 is caught by the hole 14, whereby the operator 11 is connected with the member 12. Under this connecting condition, if the operator 11 is pulled, the member 12 is also moved integrally, and the pawl 16 is in a raw with and near an inside of a peripheral part of a hole 19 of a case 13, so that an outward bending of the pawl 16, that is, a displacement for the operator 11 to get out from the hole 14 is checked by the peripheral part of the hole 19 of the case 13, and the operator 11 is prevented from slipping out.

Description: TECHNICAL FIELD The invention relates to an operating apparatus improved at a connecting structure between an operator and a member to be operated (hereinafter briefly called as "member"). TECHNICAL BACKGROUND Conventionally, in an operating apparatus to be used to serve to control, for example, lights, wipers, washers, air conditioners and others, as shown in Fig.4, an operator 1 and a member 2 are furnished. The member 2 is held in a case 3, and under this condition the operator 1 which is provided therein with a sleeve 4 is fitted on a shaft part 2a of the member 2 whose one part is projected from the case 3, so that the operator 1 is connected to the member 2. In this state, the sleeve 4 is, as shown in Figs.5 and 6, is cut at both sides into cut portions 6 and is defined with a part 5 which protrudes inward thereof. When the operator 1 is fitted as mentioned onto the shaft part 2a of the member 2, the protruded part 5 is straightened by the shaft 2a from a state shown with a two-dotted line in Fig.5 to a state shown with a solid line. Due to a restoring force from this straightened state to the protruded state, the protruded part 5 is pressed to the shaft 2a, and due to friction thereby the operator 1 is prevented from slipping out. When a user of this apparatus holds the operator 1 to rotate, push or pull, the member 2 is accordingly rotated, pushed or pulled to carry out controllings as mentioned. However, when the user pulls the operator 1, if the friction force at the protruded part 5 of the sleeve 4 effecting to the shaft 2a of the member 2 could not stand against the pulling force, the operator 1 would be probably slipped out. In particular, when a pulling operation is included in operating modes of the operator 1, it is pulled more frequently, so that slipping-out is more possibly. Such a structure particularly wants a part as a sleeve having the protruded part 5 together with the cut portion 6 and invites high producing cost. The document "JP-U-7 030 431" discloses an operating apparatus wherein an operator (3) comprises a part (13B) engaged with an engaging part (13D) of a member. DISCLOSURE OF THE INVENTION In view of these circumstances, the invention has been realized, and accordingly it is an object to offer an operating apparatus which can prevent the operator from slipping out when it is pulled, and can be produced at lower cost. For accomplishing the object, an operating apparatus of the invention is furnished with an operator and a member to be operated by manipulating the operator, and is characterized by providing a part to be engaged furnished at the operator, an engaging part furnished at the member to be operated, the engaging part being engaged with the part to be engaged in a manner that it is returned under being outward bent by pushing the operator hereinto, and being connected with the member such that the member to be operated is moved integrally by an at least pulling operation of the operator, a checking member furnished to stand outside of the engaging member when the operator is pulled so as to check the outside bending of the engaging member at this standing position. According to the present instrument, when the operator is pulled, the checking member stands outside of the engaging part, and the engaging part is prevented from getting out of a part to be engaged in that the checking member checks the engaging part from the outside bending. BRIEF DESCRIPTION OF THE DRAWINGS Fig.1 is cross sectional views of element parts showing one embodiment of the invention; Fig.2 is cross sectional views of the element parts in another operating state; Fig. 3 is a front view of a pawl portion of the member to be operated seen from an arrow B direction of Fig.2; Fig.4 is cross sectional views of element parts of a prior art; Fig.5 is a cross sectional view showing the relation between a shaft part of the member to be operated and a sleeve part; and Fig.6 is a front view of a projecting part of the sleeve seen from an arrow A direction of Fig.5 MOST PREFERRED EMBODIMENT FOR CARRYING OUT THE INVENTION Explanation will be made to one embodiment of the invention with reference to Figs.1 to 3 of the attached drawings. Fig.2 shows the operator 11, the member 12 and a case 13. The operator 11 is made of, e.g., an ABS resin and comprises a main part 11a shaped in a short cylinder having a bottom, a thumb 11b projecting outward (upward in the drawing) from the center of an outer face of the bottom, and a shaft 11c projecting in opposition (downward in the drawing) to the thumb 11b from the center of an inner face of the bottom of the main part 11a. The shaft 11c is hollow and formed with a hole 14 as a part to be engaged in one portion of a peripheral part near a front end thereof. At the lower part than the hole 14 of the shaft 11c, an oblique part 15 is formed which comes near the center as going to the front end. On the other hand, the member 12 is made of, e.g., polybutyleneterephthalete, and comprises a main part 12a and a shaft 12b extending from one end in an axial direction of the main part 12a to this axial direction (upward in the drawing). The shaft 12b of the member 12 is hollow having a larger diameter than that of the shaft 11c of the operator 11 and is formed with a pawl 16 as an engaging part corresponding to the hole 14 in one portion of a peripheral part of an intermediate part. The pawl 16 is, as shown in Fig.3, cut at both right and left sides and a lower side from other parts by a cut part 17, so that an only upper part 16a continues to other parts, and the pawl 16 is bent at the upper part 16a in inner and outer diametrical directions. The pawl 16 is formed with a projection 16b in an inside of the lower part thereof. The case 13 is composed of, e.g., the ABS resin, and has a concave 18 of larger diameter than that of the main part 11a of the operator 11, and has, at the center of the concave 18, a hole 19 of larger diameter than that of the shaft 12b of the member 12, and further has a cylinder 20 at the periphery of the hole 19 (in the concave 18). In the instant structure, as seen in Fig.2, the case 13 holds therein the member 12 which projects a front end of the shaft 12b from the hole 19. On the other hand, the operator 11 is advanced from the front end of the shaft 12b, the circumferential position of the hole 14 is met with that of the pawl 16, and the shaft 11c is pushed into the shaft 12b. Then, an upper part than the oblique part 15 of the shaft 12b contacts the projection 16b of the pawl 16 to push it outside, so that the pawl 16 is projected as shown with the two-dotted-line. When the hole 14 of the shaft 12b comes to a position agreeing to the projection 16b of the pawl 16, the pawl 16 is released from the outward pushing (bending) by the outer face of the shaft 12b, and is returned inward so as to insert the projection 16b into the hole 14 so as to provide the engagement therebetween. In such a manner, the operator 11 is connected with the member 12, and under this connected condition if the operator 11 is pulled, the shaft 12b of the member 12 and, finally, a whole body of the member 12 is pulled integrally and moved to a position shown in Fig.1 (an up-position) through the engaging structure between the pawl 14 and the projection 16b of the pawl 16. The pawl 16 of the shaft 12b is in a row with and near the inside of the hole 19 of the case 13, and in other words, the peripheral part of the hole 19 stands in line with and near the outside of the pawl 16 of the shaft 12b. Therefore, the outward bending of the pawl 16, that is, a displacement for causing the projection 16b to escape from the hole 14 of the shaft 12b of the operator 11, is checked by the peripheral part of the hole 19 of the case 13, so that the pawl 16 is thereby prevented from getting out from the hole 14, and by maintaining the engagement, the operator 11 is avoided from slipping out. Thus, in the present structure, even if the operator 11 is pulled, it is never slipped out as the existing operator 1 is done, and besides the structure therefor is only that the operator 11 is formed with the hole 14 and the member 12 is formed with the pawl 16, and by such a structure only, the inventive apparatus can be realized at lower cost without especially requiring a member such as the sleeve 4 as the prior art. In particular, in the present structure, what checks the outward bending of the pawl 16 when the operator 11 is pulled, is the case 13, namely, the case 13 serves as a checking member of the bending, and not necessitating any special member to be used exclusively for checking, so that the apparatus is provided economically. If the operator 11 is pushed from the instant pulling condition, the member 12 is pushed by the front end of the shaft 11c of the operator 11 and returned to the position shown in Fig.2 (the down position). At this position, the pawl 16 of the shaft 12b separates from the hole 19 of the case 13 and is released from the checking, so that the pawl 16 can be freely bent outward, and the connection of the operator 11 is made at this position. The positions of pushing and pulling operations are kept by a moderation mechanism (not shown). In each position of pushing and pulling operations, when the operator 11 is rotated, the shaft 12b of the member 12 and, finally, a whole body of the member 12 is pulled integrally through the engaging structure between the pawl 14 and the projection 16b of the pawl 16. In a case of the present embodied example, the rotating operation of the member 12 by the operator 11 is divided into three steps. At the first step, for example, a small lamp of an automobile is lighted, in addition at the second step, a head lamp is turned on, at the three step, in addition thereto, a rear fog lamp is lighted, and at the inside of the case 13, a point of contact mechanism therefor is arranged. A position for rotating operation is kept by the moderation mechanism (not shown). A front fog lamp is lighted by pulling the member 12 by the operator 11, and at the inside of the case 13, a connection mechanism therefor is arranged. Note that the invention is not limited only to the above mentioned and shown embodiments, and in particular the concrete content of the operation is not limited to the light control of the automobile, but applied to wipers, washers, air conditioners and other controls, and to control of other than automobiles. The controls may depend upon the pushing operation only of the operator 11 or the rotating operation. Further, it is allowed that the part to be engaged of the operator 11 may be a convex, not the hole 14, and the engaging part of the member to be operated may have a concave, not the pawl 16 with the projection 16b. The invention is as explained above and has the following effects. According to an operating apparatus of claim 1, when the operator is pulled, the checking member positions outside of the part engaging the part to be engaged of the operator so as to limit the bending of the engaging part for preventing the engaging part from getting out from the part to be engaged, whereby it is possible to securely avoid the slipping-out of the operator when pulling the operator, and this measuring can be provided without requiring any special members and the present apparatus can be provided at low cost. According to an operating apparatus of claim 2, the case holding therein the member to be operated can be utilized as the checking member and this measuring can be provided without requiring any special members, and the present apparatus can be provided at low cost.

Claims: An operating apparatus comprising: an operator (11), a member (12), and a checking member (13), wherein the operator (11) comprises a part (14) engaged with an engaging part (16) of said member (12) such that said member is adapted to be moved integrally with said operator (11) by an at least pulling operation of said operator (11), said engaging part (16) being adapted to be bend away from said part (14) by pushing the operator (11) into the member (12), and being adapted to be returned from its bent condition when it comes into engagement with said part being (14) following further pushing of the operator (11) wherein when the operator (11) is pulled said checking member (13) being arranged adjacent to the engaging part (16) to limit its bending to prevent disengagement of part (14) and engaging part (16). The operating apparatus according to claim 1, characterized in that the checking member (13) is a case holding therein the member (12) to be operated. The operating apparatus according to claim 1 or 2, characterized in that an engaging part (16) is a hole and said part (14) is a pawl. The operating apparatus according to one of the previous claims, characterized in that said member (12) comprises a main part (12a) and a hollow shaft (12b) in which a hollow shaft (11c) of the operator (11) is introduced, wherein the pawl (16) is formed as a peripheral part of said hollow shaft (12b). The operating apparatus according to one of the previous claims, characterized in that said pawl (16) is formed with a projection (16b) to be inserted into said hole (14) to provide said engagement therebetween. The operating apparatus according to one of the previous claims, characterized in that said hollow shaft (11c) of said operator (11) comprises an oblique part (15) at a part lower than the hole (14).

Inventors: MORI YOSHIKI, MORI, YOSHIKI, MORI, Yoshiki, K.K. Tokai-Rika-Denki-Seisakusho
Applicants: TOKAI RIKA CO LTD, KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO
Application year: 1998
Main classification: H01H3
IPC codes: H01H25, H01H3