JP4690282B2 - Shock absorber for switchgear and switchgear - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock-absorbing member for an opening / closing device that opens and closes by rotation, slide, and the like, and more particularly to a shock-absorbing member for opening / closing device that can realize a reduction in collision noise and height position accuracy when stopped. About.

  It has been difficult for a stopper used in a conventional opening / closing device that performs an opening / closing operation to achieve both the effect of reducing the impact noise (buffer effect) and ensuring the height position accuracy when stopping. In order to increase the buffering effect, it is necessary to use a soft material. However, if the material is soft, the amount of crushing becomes large, and it becomes difficult to ensure the accuracy of the height position when stopping. On the contrary, in order to increase the accuracy of the height position at the time of stopping, it is necessary to use a hard material, but if the material is hard, the buffering effect is weakened and the collision sound is not reduced.

  Patent Document 1 describes a rubber door stopper that restricts a vehicle door to a predetermined closed position. The door stopper described in Patent Document 1 includes a main body portion attached to one of a vehicle body and one of the doors, and a receiving portion that receives the other of the body or the door when the door is closed, and includes at least one of the receiving portions. A buffer portion made of a softer rubber than the rubber forming the main body portion is provided at the tip portion. It is described that it is possible to prevent the hitting sound from being generated between the door and the body by such a configuration.

  Patent Document 2 describes a buffer member that is applied to an elevator door. The cushioning member described in Patent Document 2 uses a cushioning material with different hardness in the cushioning material to be attached to the door end side measuring portion of the central side door, and the soft cushioning material collides first, It then functions by being configured to collide with a hard cushioning material.

JP 2004-353183 A (paragraphs 0019-0023) JP-A-5-319754 (paragraphs 0010-0015)

  FIG. 6 is an explanatory diagram showing an example of a stopper used in a display mechanism that opens and closes. The example shown in FIG. 6 is an example in which the stopper 92 is formed of a single material. As shown in FIG. 6, for example, in a display device attached to a ceiling, a display unit 1 that is a casing that is opened and closed is rotatably attached to a main body unit 3 that is a casing on the main body side by a shaft 4. ing. The main body 3 is provided with a stopper 92 for stopping the rotation operation of the display unit 1 accompanying the closing operation at a predetermined height position. Further, the main body part 3 is provided with a lock part 5 for fixing the display part 1 at a height position when the display part 1 is closed. The stopper 92 is produced by molding an elastic member.

  In the display device shown in FIG. 6, for example, if the stopper 92 is made of soft (low hardness) rubber, it is possible to reduce the impact sound by absorbing the impact at the time of collision. Therefore, it becomes difficult to ensure the height position accuracy when stopping. In particular, in the case of a display device attached to the ceiling as shown in FIG. 5, if the height position accuracy cannot be ensured, the fixing force of the lock unit 5 is also affected. In addition, for example, if the stopper 92 is made of hard (high hardness) rubber to ensure the height position accuracy, it is difficult to absorb the impact at the time of collision, so an harsh collision sound may be generated. There is. In other words, with the stopper 92 manufactured using a single material, it is difficult to achieve both the effect of reducing the impact sound and ensuring the height position accuracy when stopping.

  Here, the door stopper described in Patent Document 1 is a door stopper used for a slide door, and prevents a beating sound due to vibrations acting on a surface different from a receiving portion for receiving the door. Therefore, it is not considered to achieve both reduction in impact sound due to impact during opening and closing and height position accuracy when stopping. For example, Patent Document 1 describes that the roller receiving portion may be formed of a softer rubber than the main body, thereby providing a buffer function when receiving the guide roller. However, there is no description about the point that the stop position accuracy is lowered by the buffer function.

  Moreover, the buffer member described in Patent Document 2 can make the gap at the time of closing the door constant by tapering the soft buffer material and making the direction of deformation opposite to the relatively hard buffer material. However, a separate region for releasing the soft cushioning material is necessary so as not to be sandwiched between relatively hard cushioning materials. Further, when the cushioning material used in combination is deformed in a direction away from the cushioning material, it causes peeling or the like, resulting in a problem of deterioration in reliability.

  Accordingly, the present invention provides a shock-absorbing member for a switchgear that can reduce the collision sound when colliding with a certain member without increasing the mounting area, and can ensure the height position accuracy of the member at the time of stopping, and An object is to provide a switchgear.

The shock-absorbing member of the switchgear according to the present invention can be used for a switching operation in a switchgear (for example, a mobile phone terminal or a notebook personal computer) in which the first casing and the second casing are connected to be freely opened and closed. A buffer member (for example, a stopper 2) for buffering the accompanying collision of the housing portion, and is attached to the first housing portion to stop the second housing portion at a predetermined height position. A base portion (for example, the base portion 21) and a tip portion (for example, the tip portion 22) that collides with the second housing portion before the base portion are provided, and an outer edge (for example, the outer edge 21-1) of the base portion is provided. ) Is formed at a height that can stop the second housing portion at a desired height, and the tip portion protrudes inside the outer edge of the base portion with an elastic member having a hardness lower than that of the base portion. It is formed in a shape, the base portion, the distal end inside of the outer edge of the base portion A tip support portion (for example, tip support portion 21-2), and the tip support portion supports the bottom surface of the tip portion at a position lower than the outer edge of the base portion. , Projecting to a position higher than the outer edge of the base part, and collapsing to at least the height of the outer edge of the base part when colliding with the second housing part, a hollow space is formed between the tip part and the tip part support part, A hole for allowing the gas in the hollow space to pass through is formed in the distal end support portion .

  Moreover, the front-end | tip part may be formed in the hollow dome shape.

  Moreover, the base part and the front-end | tip part may be integrally molded.

  Further, the base portion may be formed of a hard elastomer or resin having a hardness higher than that of rubber.

An opening / closing device according to the present invention is an opening / closing device in which a first housing portion and a second housing portion are connected in an openable / closable manner. The first housing portion includes a second housing. A buffer member for buffering a collision with the base portion is attached. The buffer member includes a base portion for stopping the second housing portion at a predetermined height position, and a second housing before the base portion. A front end portion that collides with the body portion, and the outer edge of the base portion is formed to a height that can stop the second housing portion at a desired height, and the front end portion is located inside the outer edge of the base portion. The base part is formed in a convex shape with an elastic member having a lower hardness than the base part, and the base part has a tip part support part for supporting the tip part inside the outer edge of the base part, and the tip part support part Supports the bottom surface of the tip at a position lower than the outer edge of the base, and the tip is stretched to a position higher than the outer edge of the base. When it collides with the second housing part, it collapses at least to the height of the outer edge of the base part, and a hollow space is formed between the tip part and the tip part support part. A hole for allowing a gas to pass therethrough is formed .

  According to the present invention, a base portion formed by using a relatively hard elastic member as a buffer member and having an outer edge at a height at which the second casing portion can be stopped at a desired height, and the base portion Is formed in a convex shape with an elastic member that is softer than the base portion, and is combined with a tip portion that collides with the second housing portion before the base portion and collapses at least to the height of the base portion. Therefore, in the switchgear, it is possible to achieve both the effect of reducing the collision noise and ensuring the height position accuracy at the time of stopping without increasing the number of parts and the mounting area.

Embodiment 1 FIG.
Hereinafter, the present embodiment will be described with reference to the drawings. FIG. 1 is an explanatory view showing an example of a stopper which is a buffer member used in the opening / closing device according to the present embodiment. In FIG. 1, the display apparatus attached to a ceiling as an opening / closing apparatus is shown as an example. In the display device shown in FIG. 1, a display unit 1 that is a casing on the side that is opened and closed is rotatably attached to a main body unit 3 that is a casing on the main body side by a shaft 4. In addition, the main body 3 is provided with a stopper 2 for stopping the rotation operation of the display unit 1 accompanying the closing operation and for determining the height position when the display unit 1 is stopped (when closed). Further, the main body part 3 is provided with a lock part 5 for fixing the display part 1 at a height position when the display part 1 is closed.

  Note that the opening / closing device to which the buffer member according to the present invention is applied is not limited to a display device, but has a structure in which a housing (or part) can be opened and closed by rotation, sliding, etc. Any device may be used as long as the device has a positional relationship such that the part is in contact with another housing (or part) in a stopped state (predetermined closed position or open position).

  FIG. 2 is an explanatory diagram showing a configuration example of the stopper 2 in the present embodiment. 2A is a plan view of the stopper 2, and FIG. 2B is a sectional view of the stopper 2 (A-A 'sectional view in FIG. 2A). 2, the stopper 2 is formed using two types of elastic members having different hardnesses. Specifically, the stopper 2 is formed by combining a base portion 21 formed using a relatively hard elastic member and a tip portion 22 formed using a relatively soft elastic member.

  The stopper 2 is produced as one component by, for example, bonding the members of the base portion 21 and the tip portion 22 and then bonding them. Further, for example, when two-color molding is possible by a combination of members, the two-color molding may be performed to integrate the parts. In the case of two-color molding, it is possible to prevent peeling and the like without increasing the time and effort of assembling, and the reliability can be improved.

  The member of the base portion 21 is, for example, hard rubber or elastomer. Specifically, the hardness of the base portion 21 is preferably a hardness that can support the display portion 1 at a desired height position in a stopped state without being deformed. On the other hand, the member of the tip portion 22 is, for example, a soft rubber or elastomer. Specifically, the hardness of the distal end portion 22 is a hardness that can be easily deformed, and the collision energy can be mitigated by the deformation, and can be restored to the original shape when the collision object (the display portion 1) disappears. Preferably there is. Note that the hardness of the tip 22 is not limited to being crushed without absorbing the impact, but is required to have a hardness suitable for the collision object that can mitigate the collision energy. Note that the hardness of the distal end portion 22 may be adjusted in consideration of the shape and thickness of the distal end portion 22. In addition, it is also possible to use hard elastomer and resin harder than rubber | gum as a member of the base part 21 by raising the absorption power of the collision energy by the front-end | tip part 22. FIG.

  The stopper 2 is produced as one component by, for example, bonding the members of the base portion 21 and the tip portion 22 and then bonding them. Further, for example, when two-color molding is possible by a combination of members, the two-color molding may be performed to integrate the parts. In the case of two-color molding, it is possible to prevent peeling and the like without increasing the time and effort of assembling, and the reliability can be improved.

  The tip portion 22 is formed in a convex shape at the center of the surface (impact surface) of the stopper 2 so as to come into contact with the display portion 1 before the base portion 21. Specifically, the tip 22 is formed in a hollow dome shape so that more collision energy can be absorbed. And the outer edge of the base part 21 surrounding the front-end | tip part 22 is a height slightly lower than the front-end | tip part 22 so that it may contact with the display part 1 after the front-end | tip part 22, and it is the height which wants to stop the display part 1 Is formed by h. That is, the outer edge portion of the base portion 21 (for example, the outer edge 21-1 in FIG. 2) not only supports the impact object at a desired height, but also an enclosure for denting the tip portion 22 along the collision direction. Also serves as a role.

  Further, the base portion 21 is formed with a tip support portion 21-2 for supporting the tip portion 22 inside the outer edge thereof, and the bottom surface of the dome-shaped tip portion 22 with respect to the tip portion support portion 21-2. Are superimposed. A hollow space is formed between the base portion 21 and the tip portion 22 so as to dent (crush) the tip portion 22 inward. Note that the tip support portion 21-2 not only supports the tip portion 21 so as to collide with the display portion 1 first, but also the outer edge of the base portion 21 directly contacts the display portion 1 when the display portion 1 is closed. Support so that it can be supported in contact. Specifically, the distal end portion 22 protrudes to a position higher than the outer edge of the base portion 21 and is supported at a position where the distal end portion 22 can be crushed to the height of the outer edge at the time of collision.

  In addition, it is also possible to combine the front-end | tip part 22 of a convex shape directly inside the outer edge of the base part 21, without providing the front-end | tip part support part 21-2 in the base part 21. FIG. In such a case, the height of the tip 22 may be adjusted.

  Next, the buffering effect by the stopper 2 in the present embodiment will be described with reference to FIG. FIG. 3 is an explanatory diagram for explaining the buffering effect of the stopper 2 in the present embodiment. As shown in FIG. 3A, when the display unit 1 rotates toward the main body unit 3 with the closing operation, the display unit 1 collides with the stopper 2. Here, the display unit 1 first collides with the tip 22 of the stopper 2. At this time, the dome-shaped tip portion 22 formed of a soft material is deformed (collapsed) by the collision energy. Since the collision energy is absorbed when the tip 22 is crushed, the collision noise between the tip 22 and the display unit 1 is suppressed.

  As shown in FIG. 3B, the display unit 1 further rotates and collides with the base unit 21. At this time, the distal end portion 22 is crushed to the height of the outer edge of the base portion 21 in accordance with the rotation of the display portion 1. The base portion 21 formed of a hard material supports the display portion 1 without being deformed (or returns after being slightly deformed at the moment of collision), and stops the display portion 1 at the height of the outer edge. In addition, since the rotational speed of the display part 1 is decelerated by the previous collision with the front-end | tip part 22, even if it is a hard material, the collision sound of the base part 21 and the display part 1 is suppressed. Finally, the lock unit 5 is rotated to fix the display unit 1 supported by the base unit 21.

  As described above, according to the present embodiment, the tip portion 22 formed using a relatively soft elastic member and the base portion 21 formed using a relatively hard elastic member are combined, In the opening / closing device, the shock absorber is made to collide with the base portion 21 without pinching the tip portion 22 after the tip portion 22 is crushed and the tip portion 22 is crushed to reduce the collision energy. Without increasing the area, it is possible to achieve both the effect of reducing the impact sound and ensuring the height position accuracy when stopping.

  In addition, according to this Embodiment, it is not necessary to provide the member for buffering, and the member for ensuring height position accuracy separately, and the said effect can be acquired, without increasing a number of parts.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a cross-sectional view of the stopper 2 according to the present embodiment (AA ′ cross-sectional view in FIG. 2A). In the present embodiment, the hollow space formed between the base portion 21 and the tip portion 22 has a semi-sealed structure. Specifically, an opening 23 for slowly taking in and out of air in the hollow space is provided in the tip support portion 21-2 that is overlapped with the bottom surface of the dome-shaped tip portion 22. The number of the opening holes 23 may be any number as long as the hollow space can have a semi-sealed structure. Specifically, the air pressure in the hollow space may be adjusted so that the tip 22 can sufficiently reduce the collision energy, taking into account the hardness and thickness of the tip 22.

  Next, the buffer effect by the stopper 2 in the present embodiment will be described with reference to FIG. FIG. 5 is an explanatory diagram for explaining the buffering effect of the stopper 2 according to the present embodiment. As shown in FIG. 5A, when the display unit 1 rotates toward the main body unit 3 along with the closing operation, the display unit 1 collides with the stopper 2. Here, the display unit 1 first collides with the tip 22 of the stopper 2. At this time, the dome-shaped tip portion 22 formed of a soft material is deformed (collapsed) by the collision energy. In the present embodiment, when the display unit 1 collides with the distal end portion 22, the dome-shaped distal end portion 22 is crushed and air in the hollow space of the semi-sealed structure slowly escapes from the opening hole 23. That is, the effect of an air spring is also added to the tip portion 22 by the semi-sealed hollow space. Therefore, even if sufficient collision energy cannot be absorbed at the moment of collision, the collision energy can be gradually reduced by acting as an air spring. For example, the tip 22 can be made of a softer material, the amount of collision energy absorbed at the moment of collision can be increased, and the overall amount of collision energy absorption can be adjusted by the air pressure from the opening hole 23. Since the collision energy is absorbed when the tip 22 is crushed, the collision noise between the tip 22 and the display unit 1 is suppressed.

  As shown in FIG. 5B, the display unit 1 further rotates and collides with the base unit 21. At this time, the distal end portion 22 is crushed to the height of the outer edge of the base portion 21 in accordance with the rotation of the display portion 1. The base portion 21 formed of a hard material supports the display portion 1 without being deformed, and stops the display portion 1 at the height of the outer edge. Since the rotation speed of the display unit 1 is decelerated due to the previous collision with the tip 22, the collision sound between the base unit 21 and the display unit 1 can be suppressed. Finally, the lock unit 5 is rotated to fix the display unit 1 supported by the base unit 21.

  As described above, according to the present embodiment, by combining the tip portion 22 with a semi-sealed structure, it can be made to act as an air spring, and the buffering effect can be further enhanced.

  The present invention has a structure in which a casing (or part) such as a foldable mobile phone terminal or a notebook personal computer can be opened and closed by rotation or slide, and the casing (or part) to be opened and closed is The present invention can be suitably applied to an apparatus that may be damaged or generate a collision sound by colliding with another casing (or part) in a stopped state (predetermined closed position or open position).

It is explanatory drawing which shows an example of the buffer structure used for the switchgear by 1st Embodiment. It is explanatory drawing which shows the structural example of the stopper 2 in 1st Embodiment. It is explanatory drawing for demonstrating the buffer effect of the stopper 2 in 1st Embodiment. It is sectional drawing of the stopper 2 in 2nd Embodiment. It is explanatory drawing for demonstrating the buffer effect of the stopper 2 in 2nd Embodiment. It is explanatory drawing which shows an example of the stopper used for the display mechanism which opens and closes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display part 2 Stopper 21 Base part 21-1 Outer edge 21-2 Tip part support part 22 Tip part 23 Opening hole 3 Body part 4 Shaft 5 Lock part

Claims (5)

A shock-absorbing member for buffering a collision of the housing part accompanying an opening / closing operation in an opening / closing device in which the first housing part and the second housing part are connected to be freely opened and closed,
A base portion that is attached to the first housing portion and stops the second housing portion at a predetermined height position, and collides with the second housing portion before the base portion. With a tip,
The outer edge of the base portion is formed at a height that can stop the second housing portion at a desired height,
The tip portion is formed in a convex shape with an elastic member having a hardness lower than that of the base portion inside the outer edge of the base portion ,
The base portion has a tip portion support portion for supporting the tip portion inside the outer edge of the base portion,
The tip portion support portion supports the bottom surface of the tip portion at a position lower than the outer edge of the base portion,
The tip portion projects to a position higher than the outer edge of the base portion, and collapses at least to the height of the outer edge of the base portion when colliding with the second housing portion.
A hollow space is formed between the tip portion and the tip support portion,
A buffer member for an opening / closing device , wherein a hole for allowing the gas in the hollow space to pass through is formed in the tip support portion . The shock-absorbing member for the switchgear according to claim 1, wherein the distal end portion is formed in a hollow dome shape. The buffer member of the switchgear according to claim 1 or 2 , wherein the base portion and the tip portion are integrally formed. The shock-absorbing member for a switchgear according to any one of claims 1 to 3 , wherein the base portion is formed of a hard elastomer or resin having a hardness higher than that of rubber. An opening / closing device in which a first housing part and a second housing part are connected to be freely opened and closed,
A buffer member for buffering a collision with the second housing portion is attached to the first housing portion,
The buffer member includes a base part for stopping the second housing part at a predetermined height position, and a tip part that collides with the second housing part before the base part,
The outer edge of the base portion is formed at a height that can stop the second housing portion at a desired height,
The tip portion is formed in a convex shape with an elastic member having a hardness lower than that of the base portion inside the outer edge of the base portion ,
The base portion has a tip portion support portion for supporting the tip portion inside the outer edge of the base portion,
The tip portion support portion supports the bottom surface of the tip portion at a position lower than the outer edge of the base portion,
The tip portion projects to a position higher than the outer edge of the base portion, and collapses at least to the height of the outer edge of the base portion when colliding with the second housing portion.
A hollow space is formed between the tip portion and the tip support portion,
An opening / closing device in which a hole for allowing the gas in the hollow space to pass through is formed in the tip support portion .

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