JP2564590Y2 - Opening / closing cam member - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an opening / closing cam member which is used in, for example, a push-open type storage device attached to an instrument panel of an automobile and controls opening and closing movement of the storage device. It is.

[0002]

2. Description of the Related Art As an example of the above push-open type storage device, as shown in FIG. 9, a storage box B is supported in a housing H provided on an instrument panel side so as to be openable and closable. B is always urged in the opening direction by a spring pressure (not shown), while a cam member C for opening and closing is pivotably mounted on the housing H side, and a pin member P which engages and disengages with the cam member C on the storage box B side. 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. In this state, the storage box B is further moved to the housing H. When the storage box B is pushed into the housing H, the locking of the pin member P with respect to the cam member C is released, and the storage box B can be automatically moved from the opening of the housing H in the opening direction.

The opening / closing cam member C used in this storage device is the fifth opening / closing cam member disclosed in Japanese Utility Model Laid-Open No. 25332/1990.
As shown in FIGS. 9 to 11, a hole 11 is formed at the base end of the housing 11 so as to receive the mounting shaft 14 provided on the housing H side. The cam groove 12 having the portion 12b and the lead-out passage 12c is formed continuously, and the pin member P is removably moved in the cam groove 12. In particular, the lead-out of the cam groove 12 is performed. Regarding the passage 12c, a cross section inverted U whose lower surface side is open
Since the storage box B is pushed into the housing H when the storage box B is pushed into the housing H, a pin provided on the storage box B side is formed. The structure is such that the member P can be prevented from inadvertently entering the cam groove 12 from the opening of the lead-out passage 12c.

The cam member C is actually connected to the housing H
10, as shown in FIG. 10, as shown in FIG. 10, the torsion spring 1 is pivotally supported on the mounting shaft 14 of the housing H via a torsion spring 15 and a washer 16, and the torsion spring 1
It is urged in a predetermined direction by the urging spring pressure of 5.
In the figure, reference numeral 18 denotes a locking arm provided on the housing H side for locking the other end of the torsion spring 15. One end of the torsion spring 15 is
It is locked by a locking portion Ca provided on the cam member C side.

Accordingly, under the conventional opening / closing cam member C,
When the storage box B is pushed into the housing H, the pin member P
Is prevented from inadvertently intruding into the opening of the outlet passage 12c, and always comes into contact with the outer peripheral guide surface 13 on the working end side of the cam member C, thereby urging the cam member C by the urging of the torsion spring 15. Since it is reliably guided toward the inlet 12a of the cam groove 12 while turning in the opposite direction against the spring pressure, a normal operation is thereby ensured.

[0006]

However, in the conventional cam member C, it is necessary to gradually reduce the height dimension of the lead-out passage 12c having an inverted U-shaped cross section of the cam groove 12 toward the opening. Indeed, the pin member P is incorrectly
c has the advantage that it can be prevented from entering the cam groove 12, but on the other hand, the pin member P provided on the storage box B side comes off the lock portion 12 b of the cam groove 12, and When moving outward through the inside 12c, as shown in FIG. 10, the working end side of the cam member C is lifted by the tip of the pin member P.
Needless to say, an unpleasant noise is generated, but when the pin member P completely moves outward and the cam member C returns to the original position, the cam member C collides with the mounting surface. However, there is a problem that an unpleasant collision sound is generated.

Further, in order to enable the cam member C to swing in the vertical direction, the mounting shaft portion 14 of the housing H that supports the cam member C so as to be pivotable is made long, as shown in FIG. Since a torsion spring 15 having a considerable height must be interposed between the washer 16 of the long mounting shaft portion 14 and the cam member C to positively define a space allowing vertical movement. For this reason, it could not be denied that the mounting location of the cam member C naturally became large. In addition, the mounting of the cam member C so as to be swingable in the vertical direction in advance is performed by strongly pulling the storage box B locked in the closed position, whereby the cam member C easily swings upward, There was also a sufficient risk that the locked state with the pin member P might be released carelessly.

[0008]

SUMMARY OF THE INVENTION The present invention has been developed in order to effectively solve the problems of the conventional opening / closing cam member. A cam groove having a passage is formed, and the height dimension of the cam groove lead-out passage is set to the height of the pin member provided on the movable body side, assuming that the cam groove has a lead-out passage having an inverted U-shaped cross section. The passages are made equal in size to allow the passage at a horizontal level, and an elastic piece for preventing the intrusion of the pin member is provided at the opening edge of the outlet passage so as to be able to bend. The second idea is
Following the first invention, 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 a biasing spring means is provided on the other surface of the base end portion. A configuration for forming a mounting portion for mounting is adopted.

[0009]

Therefore, in any of the inventions, when the moving body (storage box) is pushed into the mounting body (housing), for example,
Even if the opening of the lead-out 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 and is prevented from entering the opening of the lead-out passage. Therefore, as in the conventional case, the pin member reaches the inlet of the cam groove while rotating the cam member against the urging spring pressure, and can be securely locked to the lock portion of the cam groove.

Further, when the movable body locked at the closing position is further pushed into the mounting body, the pin member comes off from the lock portion and is guided into the lead-out passage while allowing the cam member to turn. Since the lead-out passage having an inverted U-shaped cross section has the same height dimension that allows the passage of the pin member at a horizontal level, the cam member is always kept horizontal without lifting the working end side of the cam member. While rotating in the state, allowing the pin member to pass through the lead-out passage, and when the pin member completely passes through the opening of the lead-out passage, this time, while bending the elastic piece in the opposite direction, ,
Since the pin member is smoothly separated from the cam member, there is no concern that the movement of the moving body in the opening direction is hindered even if the elastic piece is present.

In the second aspect of the present invention, it is possible to simply form a mounting hole on the mounting body side and to rotate the locking leg in the mounting hole without providing a mounting shaft on the mounting body side. , 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 the operation of attaching the cam member can be greatly simplified. There are advantages.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments illustrated in the drawings. The cam member 1 according to the first embodiment is also an integrally molded product of a synthetic resin, as shown in FIGS.
A hole 2 for fitting the mounting shaft 14 of the housing H is formed on the base end thereof, and a cam groove 3 having an inlet 3a, a lock 3b, and a lead-out passage 3c is continuously formed on the working end thereof. Therefore, it is assumed that the outlet passage 3c of the cam groove 3 is formed to have an inverted U-shaped cross section. The feature is that the height L of the outlet passage 3c of the cam groove 3 is Member P
With equal dimensions allowing horizontal level
The point is that an elastic piece 4 for preventing the intrusion of the pin member P is provided integrally with the opening edge of the lead-out passage 3c. In the figure, 5
Is a locking portion for locking the end of the leaf spring-shaped biasing spring means.

Therefore, using the cam member 1 having such a configuration,
In order to control the opening and closing movement of the storage box B, as shown in FIG. 3, the cam member 1 is rotatably supported on the mounting shaft portion 14 of the housing H through the hole 2 while the cam member 1 is turned. Urging spring means 9 fixed to the locking portion 5 on the housing H side
When the storage box B is pushed into the housing H after the cam member 1 is urged until it is restricted by the stopper portion 17, the opening size of the opening of the lead-out passage 3c is equal. Even if L is opened to the pin member P side, the pin member P first contacts the side surface of the elastic piece 4,
Intrusion into the opening of the outlet passage 3c is reliably prevented. Therefore, the pin member P contacts the outer peripheral guide surface 6 of the cam member 1 and reaches the inlet 3a of the cam groove 3 while rotating the cam member 1 against the urging spring pressure, as in the related art. Finally, as shown in FIG.
Therefore, the storage box B is locked at the closed position in the housing H against the spring pressure.

Further, when the storage box B is further pushed into the housing H in the locked state, the pin member P is automatically disengaged from the lock portion 3b, and is pulled out while allowing the cam member 1 to turn. After being guided into the passage 3c, the storage box B is moved in the opening direction by spring pressure after passing through the lead-out passage 3c. At this time, as described above, the lead-out passage 3c is As shown in FIG. 5, since the height of the cam member 1 is equal to the height L which allows the member P to pass through at the horizontal level, the cam end of the cam member 1 is not forcibly lifted by the tip end of the pin member P. By rotating the member 1 in a horizontal state at all times, the pin member P can smoothly pass through the inside of the lead-out passage 3c. At the time when the pin member P has completely passed through the opening of the lead-out passage 3c, as shown in FIG. 6, the elastic member 4 is flexed in the opposite direction by utilizing its flexibility. Since P is easily separated from the cam member 1, there is no concern that the movement of the storage box B in the opening direction is hindered even if the elastic piece 4 is present.

Therefore, in the first embodiment, the storage box B
When the storage box B is moved in the opening direction by releasing the locked state of, the working end side of the cam member 1 does not swing up and down as in the related art, and always keeps the horizontal state while turning. As a result, the cam member 1 does not rattle and generate unpleasant abnormal noise or collision noise, and the cam member 1 is attached to the mounting shaft portion 14 side of the housing H as shown in FIG. Therefore, there is no need to prepare a space that allows the swing of the cam member 1, which can greatly contribute to downsizing of the mounting portion of the cam member 1. In addition, the fact that the cam member 1 does not swing up and down prevents the pin member P from being inadvertently disengaged from the lock portion 3b of the cam groove 3 even if the storage box B locked in the closed position is strongly pulled. Can also be completely prevented, which can greatly contribute to countermeasures against malfunction.

Next, a description will be given of a cam member 1 according to a second embodiment. The cam member 1 of the second embodiment basically follows the configuration of the first embodiment, but differs therefrom. Focusing on the fact that the cam member 1 of the first embodiment can be turned horizontally, as shown in FIG. 7, a hole 2 is not provided on the base end side of the cam member 1, and a housing is provided on the lower surface of the base end. An elastically deformable anchor-shaped locking leg 7 rotatably engaged with a mounting hole 10 formed on the H side is integrally formed, and a torsion spring 9 as a biasing spring means is provided on the upper surface of the base end. An annular mounting portion 8 with claws to be mounted is formed integrally.

Accordingly, in the second embodiment, unlike the first embodiment, the mounting hole 10 is simply formed at the bottom of the housing H without providing the mounting shaft 14 on the housing H side. Thus, the cam member 1 can be pivotally attached to the housing H as shown in FIG. , The biasing torsion spring 9 can be easily mounted on the mounting portion 8.
Is locked to the locking portion 5 and the other end is connected to the housing H.
By locking the cam member 1 to the housing H, the cam member 1 can be extremely easily attached to the housing H. Therefore, as compared with the conventional one and the first embodiment, there is an advantage that the mounting operation of the cam member 1 can be greatly simplified and the number of parts can be reduced.

However, in the case of the second embodiment, the storage box B is basically related to the structure of the first embodiment.
Is pushed into the housing H, the pin member P first contacts the side surface of the elastic piece 4 and is prevented from entering the opening of the lead-out passage 3c.
When the storage box B is further pushed into the housing H, the pin member P turns the cam member 1 in a horizontal state at all times without forcibly lifting the working end side of the cam member 1, thereby moving the inside of the lead-out passage 3c. There is no difference from the first embodiment in that it can pass smoothly.

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 the same function and effect can be obtained even if the elastic piece 4 formed separately from the rubber piece or the thin metal piece is provided at a predetermined portion of the cam member 1 later. No.

[0020]

As described above, the present invention adopts the above-described structure, so that the cam member itself does not need to be swung up and down when passing through the pin member provided on the moving body side. As described above, not only is there no concern that the cam member will rattle and generate unpleasant abnormal noise or collision noise, but also there is no need to provide a space on the mounting body that allows the cam member to swing. This has also contributed greatly to miniaturization of individual parts. In addition, the fact that the cam member does not swing in the vertical direction can completely prevent the pin member from being accidentally detached from the lock portion of the cam groove even if the moving body locked in the closed position is strongly pulled. Therefore, it can contribute to malfunction prevention.

In particular, in the second invention, even if the mounting shaft is not provided on the mounting body side, a mounting hole is simply formed on the mounting body side, and the locking leg is engaged with the mounting hole. By simply doing so, the cam member can be pivotally attached to the attachment body, and the biasing spring means can be easily attached to the attachment portion. It also has an advantage that can be greatly simplified.

[Brief description of the drawings]

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

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

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

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

FIG. 5 is a vertical cross-sectional view of a main part showing a state where a pin member passes through an outlet passage of a cam member.

FIG. 6 is an explanatory diagram showing a state where a pin member is separated from a 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 an urging spring means.

FIG. 8 is a vertical cross-sectional view of a main part showing an attached state of the cam member.

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

FIG. 10 is a vertical cross-sectional view of a main part showing a mounting state of the cam member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening / closing cam member 3 Cam groove 3a Inlet 3b Lock part 3c Outgoing 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)

(57) [Scope of request for utility model registration] 1. An opening / closing cam member having a cam groove having an inlet, a lock portion, and a lead-out passage, the lead-out passage of the cam groove having an inverted U-shaped cross section. An elastic piece for preventing the intrusion of the pin member is provided at the opening edge of the lead-out passage by making the length equal to allow the passage of the pin member provided on the moving body side at a horizontal level. Opening and closing cam member. 2. A mounting part for rotatably engaging a mounting hole provided on the mounting body side on one surface of a base end portion, and mounting a biasing spring means on another surface of the base end portion. The opening / closing cam member according to claim 1, wherein the cam member is formed.