JPH0585970U - Opening / closing cam member - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an opening / closing cam member that can be horizontally swiveled. A cam groove 3 having an inlet 3a, a lock portion 3b, and a lead-out passage 3c is formed, and the lead-out passage 3c of the cam groove 3 is formed.
In the cam member 1 having a U-shaped cross section, the cam groove 3
By setting the height dimension of the lead-out passage 3c to be equal to allow the passage of the pin member at a horizontal level, and by providing the elastic piece 4 for preventing the pin member from entering the opening edge portion of the lead-out passage 3c, When passing the pin member, it is not necessary to forcibly swing the cam member 1 in the up and down direction, and a space for allowing the swing of the cam member 1 is not necessary. Therefore, the mounting position of the cam member 1 is small. Can contribute to realization.
Also, a locking leg that rotatably engages with a mounting hole provided on the mounting body side is formed on one surface of the base end portion of the cam member, and a mounting portion for mounting the biasing spring means on the other surface of the base end portion. If formed, the cam member can be attached to the attachment body with one touch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an opening / closing cam member that is used in a push-open type storage device attached to an instrument panel of an automobile, for example, and controls the opening / closing movement of the storage device.

[0002]

[Prior Art]

 As an example of the push-open type storage device described above, as shown in FIG. 9, a storage box B is rotatably supported in a housing H provided on the instrument panel side, and the storage box B is spring-loaded. While constantly urging in the opening direction by pressure (not shown), an opening / closing cam member C is rotatably mounted on the housing H side, and a pin member P for engaging and disengaging the cam member C is provided on the storage box B side. Then, when the pin member P is locked to the cam member C, the storage box B can be locked at the closed position in the housing H against the spring pressure, and in this state, the storage box B is further stored in the housing H. There is a structure in which the lock of the pin member P with respect to the cam member C is released by pushing it into the housing box B so that the storage box B can be automatically moved in the opening direction from the opening of the housing H.

The opening / closing cam member C used in this storage device is provided on the base end side thereof as shown in FIGS. 5 to 9 of Japanese Utility Model Application Laid-Open No. 2-25332. A hole 11 into which the mounting shaft portion 14 provided on the housing H side is fitted is formed, and a cam groove 12 having an inlet 12a, a lock portion 12b, and an outlet passage 12c is continuously formed on the working end side thereof. The pin member P is disengageably moved in the cam groove 12. Particularly, the lead-out passage 12c of the cam groove 12 is formed in an inverted U-shaped cross-section having an opening on the lower surface side. Since the height dimension thereof is gradually lowered toward the opening, when the storage box B is pushed into the housing H, the pin member P provided on the storage box B side is erroneously set. From the opening of the outlet passage 12c to the cam groove 1 It is configured so that it can be prevented from penetrating inside 2.

When the cam member C is actually attached to the housing H side, as shown in FIG. 10, it is rotatably supported by a mounting shaft portion 14 of the housing H via a torsion spring 15 and a washer 16. Until the stopper portion 17 is regulated, the torsion spring 15 is urged in the predetermined direction by the urging spring pressure. Reference numeral 18 in the drawing denotes a locking arm portion provided on the housing H side for locking the other end portion of the torsion spring 15. The one end portion of the torsion spring 15 is on the cam member C side. It is locked by the locking portion Ca provided on the.

Therefore, when the storage box B is pushed into the housing H under the conventional opening / closing cam member C, the pin member P is prevented from accidentally entering the opening of the outlet passage 12c. The cam groove 12 is always brought into contact with the outer peripheral guide surface 13 on the working end side of the cam member C to rotate the cam member C in the opposite direction against the biasing spring pressure of the torsion spring 15. Since it is surely guided in the direction of the inlet 12a, the normal operation is guaranteed.

[0006]

[Problems to be solved by the device]

 However, in the conventional cam member C, it is true that the pin member P can certainly reduce the height dimension of the guide passage 12c having the inverted U-shaped cross section of the cam groove 12 toward the opening. This has the advantage of preventing accidental intrusion into the cam groove 12 from the lead-out passage 12c, but on the other hand, the pin member P provided on the storage box B side comes off from the lock portion 12b of the cam groove 12. When moving outward through the lead-out passage 12c, the working end side of the cam member C is lifted by the tip of the pin member P as shown in FIG. Needless to say, when the pin member P moves completely outward and the cam member C returns to its original position, this time, the cam member C collides with its mounting surface. , Again, the problem that an unpleasant collision sound is generated It was.

Moreover, in order to allow the cam member C to swing in the vertical direction, as shown in the drawing, the mounting shaft portion 14 of the housing H that supports the cam member C so as to be rotatable is made long. Since a torsion spring 15 having a considerable height is interposed between the washer 16 of the long mounting shaft portion 14 and the cam member C, a space allowing vertical movement must be positively defined. It is undeniable that the mounting location of the cam member C naturally increases due to the above. Further, in advance, the cam member C is attached so as to be swingable in the vertical direction. When the storage box B locked at the closed position is strongly pulled, the cam member C is easily swung upward, There was a sufficient risk that the locked state with the pin member P could be unintentionally released.

[0008]

[Means for Solving the Problems]

 The present invention was developed in order to effectively solve the problems of the conventional opening / closing cam member, and the first invention forms a cam groove having an introduction port, a lock portion, and a discharge passage. Then, on the premise of a cam member having an inverted U-shaped cross section in the lead-out passage of the cam groove, the height dimension of the lead-out passage of the cam groove is allowed to pass through a pin member provided on the moving body side at a horizontal level. The same size is adopted, and a structure in which an elastic piece for preventing the pin member from entering is provided flexibly at the opening edge portion of the lead-out passage. The second invention is based on the above-mentioned first invention, and a locking leg rotatably engaged with a mounting hole provided on the mounting body side is formed on one surface of the base end portion, and the base end portion is formed. We adopted a structure that forms a mounting part for mounting the biasing spring means on the other surface.

[0009]

[Action]

 Therefore, in any of the inventions, when the moving body (storage box) is pushed into the mounting body (housing), even if the opening of the outlet passage is opened to the pin member side with the same height dimension. , The pin member first comes into contact with the side surface of the elastic piece to prevent the pin member from entering the opening of the lead-out passage. While turning against pressure, it reaches the inlet of the cam groove and can be securely locked in the lock part of the cam groove.

Further, if the moving body locked in the closed position is further pushed into the mounting body, the pin member is disengaged from the lock portion and guided into the lead-out passage while allowing the cam member to swivel. At times, since the lead-out passage having an inverted U-shaped cross section has the same height dimension that allows the pin member to pass therethrough at the horizontal level, the cam member is not lifted up and the cam member is not lifted up. The pin member is allowed to pass through the lead-in passage by turning the elastic member in a horizontal state at all times, and when the pin member has completely passed through the opening of the lead-out passage, the elastic piece is turned upside down. Since the pin member can be smoothly separated from the cam member while flexing in the direction, even if the elastic piece is present, there is no concern that the movement of the moving body in the opening direction will be obstructed.

Further, particularly in the second invention, even if the mounting shaft portion is not provided on the mounting body side, the mounting hole can be simply bored on the mounting body side and the locking leg can be rotated in the mounting hole. The cam member can be pivotally attached to the attachment body by simply attaching the cam member to the attachment body, and the biasing spring means can be easily attached to the attachment portion, which simplifies the work of attaching the cam member. There is an advantage.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail based on illustrated embodiments. The cam member 1 according to the first embodiment is also an integrally molded product made of synthetic resin, and as shown in FIGS. 1 and 2, a hole into which the mounting shaft portion 14 of the housing H is fitted on the base end side thereof as in the conventional case. The portion 2 is formed, and a cam groove 3 having an inlet 3a, a lock portion 3b and a lead-out passage 3c is continuously formed on the working end side, and the lead-out passage 3c of the cam groove 3 has an inverted U-shaped cross section. However, the characteristic feature is that the height dimension L of the lead-out passage 3c of the cam groove 3 is equal to the height dimension L that allows passage of the pin member P at a horizontal level. On the other hand, an elastic piece 4 for preventing the pin member P from entering is integrally provided at the opening edge portion of the outlet passage 3c. Incidentally, reference numeral 5 in the drawing denotes a locking portion for locking the end of the leaf spring-like biasing spring means.

Therefore, when the opening / closing movement of the storage box B is controlled by using the cam member 1 having such a structure, the cam member 1 is provided in the mounting shaft portion 14 of the housing H as shown in FIG. While supporting the cam member 1 via the portion 2 so as to be rotatable, the end portion of the biasing spring means 9 fixed to the housing H side is locked to the locking portion 5 of the cam member 1 so that the cam member 1 is a stopper portion. When the storage box B is pushed into the housing H after being urged until it receives the regulation of 17, even if the opening of the guide passage 3c is opened to the pin member P side with the same height L, The pin member P first comes into contact with the side surface of the elastic piece 4 to reliably prevent the pin member P from entering the opening of the outlet passage 3c. Therefore, the pin member P contacts the outer peripheral guide surface 6 of the cam member 1 as in the conventional case, and reaches the introduction port 3a of the cam groove 3 while rotating the cam member 1 against the biasing spring pressure. Finally, as shown in FIG. 4, since the lock portion 3b of the cam groove 3 is securely engaged, the storage box B is locked to the closed position in the housing H against the spring pressure. Will be done.

Further, if the storage box B is further pushed into the housing H in this locked state, the pin member P is automatically disengaged from the lock portion 3b this time, and the cam member 1 is allowed to rotate. After being guided into the outlet passage 3c, it passes through the outlet passage 3c to move the storage box B in the opening direction by the spring pressure. At this time, as described above, the outlet passage 3c is opened. Due to the equal height dimension L that allows the passage of the pin member P at the horizontal level, as shown in FIG. 5, the tip of the pin member P does not forcefully lift the working end side of the cam member 1. By rotating the cam member 1 while always keeping the horizontal state, the pin member P can smoothly pass through the lead-out passage 3c. When the pin member P has completely passed through the opening of the outlet passage 3c, this time, as shown in FIG. 6, the elastic member 4 is flexed in the opposite direction by utilizing its flexibility, and Since P can be easily separated from the cam member 1, even if the elastic piece 4 is present, there is no concern that the movement of the storage box B in the opening direction will be obstructed.

Therefore, in the first embodiment, when the storage box B is unlocked and the storage box B is moved in the opening direction, the working end side of the cam member 1 is moved up and down as in the conventional case. Since it is possible to always rotate while maintaining the horizontal state without swinging in the direction, there is no need to worry about rattling of the cam member 1 and causing unpleasant noise or collision noise. As shown in FIG. 5, there is no need to provide a space for allowing the cam member 1 to swing on the side of the mounting shaft portion 14 of the housing H, which greatly contributes to downsizing of the mounting position of the cam member 1. Become. Moreover, the fact that the cam member 1 does not swing in the vertical direction means that the pin member P is inadvertently disengaged from the lock portion 3b of the cam groove 3 even if the storage box B locked at the closed position is strongly pulled. Since it can be completely prevented, it will greatly contribute to malfunction prevention.

Next, the cam member 1 according to the second embodiment will be described. Basically, the cam member 1 according to the second embodiment follows the configuration of the first embodiment as it is, but there is a difference. Paying attention to the fact that the cam member 1 of the first embodiment can horizontally swivel, as shown in FIG. 7, the hole 2 is not provided on the base end side of the cam member 1, and the housing is provided on the lower surface of the base end. An elastically deformable anchor-shaped locking leg 7 rotatably attached to a mounting hole 10 formed on the H side is integrally formed, and a torsion spring 9 serving as a biasing spring means is provided on the upper surface of the base end portion. The ring-shaped mounting portion 8 with a claw for mounting is formed integrally.

Therefore, in the second embodiment, even if the mounting shaft portion 14 is not provided on the housing H side as in the first embodiment, the mounting hole 10 is simply drilled in the bottom portion of the housing H or the like. As shown in FIG. 8, the cam member 1 can be rotatably attached to the housing H by only rotatably attaching the anchor-shaped locking leg 7 to the attachment hole 10. Since the biasing torsion spring 9 can be easily mounted on the mounting portion 8, one end of the torsion spring 9 is locked on the locking portion 5 and the other end is locked on the housing H side. When the cam member 1 is locked to the arm portion 18, the cam member 1 can be attached to the housing H 1 very easily. Therefore, not only the conventional one but also the one according to the first embodiment is advantageous in that the mounting work of the cam member 1 can be greatly simplified and the number of parts can be reduced.

However, since the second embodiment basically follows the configuration of the first embodiment, if the storage box B is pushed into the housing H, the pin member P is first Is abutted against the side surface of the elastic piece 4 and is prevented from entering the opening of the outlet passage 3c. Further, if the storage box B is further pushed into the housing H while the closed lock state is maintained, the pin member P is What is different from the first embodiment in that the cam member 1 can be swung in a normally horizontal state and smoothly passed through the outlet passage 3c without forcibly lifting the working end side of the cam member 1. Absent.

In each of the above embodiments, the elastic piece 4 is formed integrally with the cam member 1. However, the present invention is not limited to this, and the elastic piece 4 has flexibility. It is needless to say that similar effects can be obtained by forming a separate piece of rubber piece or thin metal piece and providing the separately formed elastic piece 4 at a predetermined portion of the cam member 1 later. Yes.

[0020]

[Effect of the device]

 As described above, according to the present invention, by adopting the above-described configuration, it is not necessary to swing the cam member itself in the vertical direction when the pin member provided on the moving body side is passed. Rattles and there is no tendency to generate unpleasant noises or collision noises, and there is no need to provide a space on the mounting body side to allow the swinging of the cam member. It has also contributed greatly to miniaturization. In addition, the fact that the cam member does not swing in the vertical direction can completely prevent the pin member from being accidentally disengaged from the lock portion of the cam groove even if the moving body locked at the closed position is strongly pulled. Therefore, it can also contribute to measures against malfunctions.

Further, in particular, in the second invention, even if the mounting shaft portion is not provided on the mounting body side, the mounting hole is simply bored on the mounting body side, and the locking leg is attached to the mounting hole. The cam member can be pivotally attached to the attachment body and the biasing spring means can be easily attached to the attachment portion, so that in addition to the above advantages, the work of attaching the cam member can be performed. It also has the advantage that it can be simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing an opening / closing cam member according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an explanatory view showing a state in which the pin member moves on the outer peripheral guide surface of the cam member by the action of the elastic piece.

FIG. 4 is an explanatory view showing a state in which the pin member is locked to the lock portion of the cam member.

FIG. 5 is a longitudinal cross-sectional view of a main portion showing a state in which the pin member passes through the lead-out passage of the cam member.

FIG. 6 is an explanatory diagram showing a state in which the pin member is separated from the cam member.

FIG. 7 is a perspective view showing a cam member according to a second embodiment in relation to a mounting hole of a housing and a biasing spring means.

FIG. 8 is a longitudinal sectional view of an essential part showing a mounting state of the cam member.

FIG. 9 is an exploded perspective view showing a conventional cam member in a relationship between a housing and a storage box.

FIG. 10 is a longitudinal sectional view of an essential part showing a mounting state of the cam member.

[Explanation of symbols]

 1 Opening / closing cam member 3 Cam groove 3a Inlet port 3b Lock part 3c Outlet passage 4 Elastic piece 7 Locking leg 8 Mounting part 9 Energizing spring means 10 Mounting hole B Storage box (moving body) P Pin member H Housing (mounting body) )

Claims (2)

[Scope of utility model registration request] 1. An opening / closing cam member in which a cam groove having an introduction port, a lock portion, and a lead-out passage is formed, and the lead-out passage of the cam groove has an inverted U-shaped cross section. The size is set to be equal to allow the passage of the pin member provided on the moving body side at a horizontal level, and an elastic piece for preventing the pin member from entering is provided flexibly at the opening edge portion of the lead-out passage. Opening and closing cam member. 2. A mounting leg for rotatably engaging with a mounting hole provided on the mounting body side is formed on one surface of the base end portion, and a mounting portion for mounting biasing spring means on the other surface of the base end portion. The opening / closing cam member according to claim 1, wherein the opening / closing cam member is formed.