JP4531001B2 - Radio transmitter antenna extraction mechanism - Google Patents

Description

  The present invention relates to an antenna take-out mechanism for easily taking out a housed rod antenna in a radio transmitter capable of housing an attachable / detachable rod antenna inside a housing.

For example, a wireless transmitter body (housing) as disclosed in the following Patent Document 1 or the like is used for a wireless transmitter that transmits wireless radio waves to remotely control a model (steered object) such as an airplane, car, or ship. Some have operation sticks on the left and right sides of the front. The user remotely controls the steered body by tilting the operation stick up and down and left and right with the thumb or the like while holding the casing so as to be sandwiched from both sides with both hands.
The wireless transmitter has a telescopic rod antenna at the top of the housing. Some rod antennas can be attached to and detached from the housing, and some rod antennas are housed inside the housing.

In the wireless transmitter capable of storing an antenna as described above, it is originally desirable to provide a storage unit for storing the rod antenna in the lower part of the housing in order to avoid discomfort by touching the user's hand during operation. .
However, until now, since a battery or the like has been arranged at the lower part of the casing so that the user can stably hold the casing, there is no space for providing a storage section at the lower part of the casing. For this reason, the storage section is provided with a storage opening in the vicinity of the center of the side surface of the casing to store the rod antenna in the width direction of the casing.
However, recently, the use of lithium batteries and the like has led to a reduction in the size of the battery, so that it is possible to secure a space for storing the rod antenna in the lower part of the casing, and the rod antenna is stored in the lower part of the casing. .

  By the way, when removing the rod antenna housed in the housing as described above, the tip of the antenna slightly protruding from the housing opening of the housing has been picked up with fingers until now. Since the rod antenna is telescopic, the rod antenna may be stretched when the antenna tip is pulled, making it difficult to remove.

Therefore, in order to easily extract the antenna, it is conceivable to employ an antenna extraction mechanism as disclosed in Patent Documents 2 and 3 below for the wireless transmitter.
Patent Document 2 below discloses an antenna that can be pushed and moved, an antenna push-out mechanism that pushes out the antenna with a change in volume of a closed space between the slidable movable cylinder and the fixed pipe, and a lock mechanism that locks the push-out of the antenna. The movable cylinder is fitted to the outer side of the fixed cylinder and the engaging portion is formed on the outer peripheral surface, and the locking mechanism engages and locks the engaging portion. In this antenna device, when the antenna is pushed into the portable wireless device and locked, when the lock is released, the antenna is pushed out by the antenna pushing mechanism.

Patent Document 3 below is an antenna retracting mechanism configured to have an antenna that can be retracted into and out of the body, and to project the antenna with a single touch. The antenna is protruded from the body by releasing the holding at the immersion position by pressing the operation protrusion protruding to the side of the body.
Design Registration No. 1327273 JP-A-9-223909 Utility Model Registration No. 3032123

However, the antenna take-out mechanisms disclosed in Patent Documents 2 and 3 are both provided with a compression spring coaxially with the antenna, and a space for providing a spring behind the antenna housed inside the housing. However, since the rod antenna used in the wireless transmitter for remotely controlling the steered object as described above is relatively long, it is difficult to secure further space in the axial direction of the antenna inside the housing. There's a problem.
The inventions in Patent Documents 2 and 3 are antenna extraction mechanisms used for mobile phones. The antenna to be extracted is very light, and a small spring is used to push out the antenna. Can do. However, since the rod antenna used in the above-described wireless transmitter is long and heavy, it may not be reliably pushed out by a small spring. Therefore, it is difficult to provide a spring having an urging force enough to push out the antenna to the extent that a small space is behind the rod antenna inside the housing.

  Accordingly, the present invention has been made in view of the above situation, and even when a space cannot be secured in the axial direction of the rod antenna housed inside the housing, a mechanism for pushing out the rod antenna can be provided and housed. Another object of the present invention is to provide an antenna extraction mechanism that can easily extract a rod antenna with a single touch.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The antenna take-out mechanism 10 of the wireless transmitter according to claim 1 of the present invention has a rod antenna 3 that can be attached to and detached from the housing 2, and the rod antenna 3 removed from the housing 2 is attached to the housing 2. In the wireless transmitter 1 that is inserted from the storage port 4 of the body 2 and can be stored in the housing 2,
A base member 11 provided with a slide rail portion 13 for slidingly guiding the rod antenna 3 inserted from the storage port 4;
An antenna push-out means 21 that contacts the rear end surface of the rod antenna 3 housed in the housing 2 and moves in the axial direction of the rod antenna 3;
A biasing means 31 provided at a position deviating from the axial direction of the rod antenna 3 housed in the housing 2 and biasing the antenna pushing means 21 toward the housing port 4;
Locking means 45 for holding the antenna pushing means 21 pushed by the rod antenna 3 inserted from the storage port 4 at a predetermined position against the biasing of the biasing means 31 and releasing the holding state. When,
It is characterized by comprising.

The antenna take-out mechanism 10 of the wireless transmitter according to claim 2 has a rod antenna 3 that can be attached to and detached from the housing 2, and the rod antenna 3 detached from the housing 2 is attached to the housing 2. In the wireless transmitter 1 that can be inserted into the housing 2 and stored in the housing 2,
A base member 11 provided with a slide rail portion 13 for slidingly guiding the rod antenna 3 inserted from the storage port 4;
A push-out portion 23 that is in contact with the rear end surface of the rod antenna 3 housed in the housing 2 is provided, and is provided in parallel with the housed rod antenna 3 and the axial direction of the rod antenna 3 An antenna push-out means 21 that slides in parallel;
A biasing means 31 provided at a position deviating from the axial direction of the rod antenna 3 housed in the housing 2 and biasing the antenna pushing means 21 toward the housing port 4;
The antenna pushing means 21 pushed through the pushing portion 23 to the rod antenna 3 inserted from the storage port 4 is held at a predetermined position against the urging force of the urging means 31, and the holding Locking means 45 for releasing the state;
It is characterized by comprising.

Furthermore, in the antenna take-out mechanism 10 of the wireless transmitter according to claim 3, the lock means 45 includes a hole portion 14 provided in the base member 11 and a convex portion 22 provided in the antenna push-out means 21. Become
When the antenna pushing means 21 pushed by the rod antenna 3 reaches the predetermined position, the convex portion 22 is fitted into the hole portion 14 and locked.

  The antenna take-out mechanism 10 of the wireless transmitter according to claim 4 is provided with an antenna holding means for holding the rod antenna 3 housed in the housing 2 inside the housing 2. It is said.

Furthermore, in the antenna take-out mechanism 10 of the radio transmitter according to claim 5, the antenna holding means is provided in the groove 6 formed on the outer peripheral surface of the rear end side of the rod antenna 3 and the antenna pushing means 21. A projection 24,
The protrusion 24 is engaged with the groove 6 of the rod antenna 3 to hold the rod antenna 3 inside the housing 2.

According to such a configuration, even when a space cannot be secured in the axial direction of the antenna 3 by providing the antenna pushing means 21 in parallel with the rod antenna 3 housed in the housing 2 (housing portion 5). A mechanism for pushing out the stored rod antenna 3 can be provided.
The rear end surface of the stored rod antenna 3 is in contact with the push-out portion 23 of the antenna push-out means 21 held against the bias of the biasing means 31. Therefore, when this holding state is released, the antenna push-out means 21 slides from the back side to the storage port 4 side along the axial direction of the rod antenna 3, and along with this, the push-out portion 23 moves in the antenna axial direction. The rod antenna 3 can be pushed out.
Further, the rod antenna 3 inserted from the storage port 4 pushes the antenna pushing means 21 toward the back side of the storage portion 5 against the biasing of the biasing means 31. When the antenna pushing means 21 pushed by the rod antenna 3 reaches a predetermined position, the convex portion 22 is fitted into the hole 14 provided in the base member 11 and is locked and held at the predetermined position.
Further, the protrusion 24 provided on the antenna pushing means 21 is engaged with the groove 6 formed on the outer peripheral surface of the rear end portion of the rod antenna 3, whereby the rod antenna 3 can be held in the storage portion 5.
In general, the telescopic rod antenna 3 or the like has an annular groove 6 formed on the outer peripheral surface of the rear end of the antenna for design reasons.

According to the antenna take-out mechanism of the wireless transmitter according to the present invention, the antenna push-out means for pushing out this antenna in parallel with the rod antenna housed inside the housing is provided, so that the antenna is arranged in the axial direction of the housed rod antenna. Even when a space for providing the pushing means cannot be secured, a mechanism for pushing out the rod antenna can be provided.
Moreover, the lock is released by pushing the convex portion constituting the locking means with fingers or the like to release the fitting state with the hole portion, and the rod antenna is pushed out by the sliding movement of the biased antenna pushing means. That is, the rod antenna is automatically pushed out by a simple operation of pushing the convex portion with a finger, and the stored rod antenna can be easily taken out with one touch.

  Further, the protrusion provided on the antenna pushing means engages with the groove formed on the outer peripheral surface of the rear end portion of the rod antenna, whereby the rod antenna can be held inside the casing. Thereby, it is possible to prevent the rod antenna housed inside the housing from dropping off from the housing, and it is possible to prevent the rod antenna pushed out by releasing the locking means from jumping out excessively.

Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a perspective view showing a wireless transmitter having an antenna extraction mechanism of the wireless transmitter according to the present invention, FIG. 2 is a rear view of the wireless transmitter, FIG. 3 is an end view taken along line AA in FIG. It is a disassembled perspective view of an antenna extraction mechanism.

First, a wireless transmitter provided with the antenna extraction mechanism of this embodiment will be briefly described.
As shown in FIG. 1, this wireless transmitter 1 transmits wireless radio waves to remotely control models of airplanes, cars, ships, etc. as steered bodies. A plurality of channels can be controlled by tilting up and down, left and right operation sticks respectively provided on the front and right sides of the body.

  As shown in FIGS. 1 and 2, the wireless transmitter 1 has a telescopic rod antenna 3 that can be attached and detached. The rod antenna 3 is attached to the upper portion of the housing 2 when the radio transmitter 1 is used, and is removed from the housing 2 when not in use and inserted from a storage port 4 provided at the lower portion of the housing 2 to be inside the housing. Is stored in the storage unit 5. In general, an annular groove 6 is formed on the outer peripheral surface of the rear end portion of the rod antenna 3. In addition, since the rod antenna 3 used in such a wireless transmitter 1 is relatively long, it has been difficult to secure a space for the storage unit 5 in the housing 2 until now. Thus, the housing part 5 can be provided in the housing 2.

From here, the antenna extraction mechanism which is the principal part of this invention is demonstrated.
As shown in FIGS. 1 and 3, the antenna take-out mechanism 10 according to the present embodiment is provided at the lower portion of the housing 2 and constitutes the housing portion 5 of the rod antenna 3 described above.
As shown in FIG. 4, the antenna take-out mechanism 10 is roughly constituted by a base member 11, an antenna push-out means 21, an urging means 31, a cover member 41, and a lock means 45.

  The base member 11 is provided with a slide rail portion 13 that constitutes a part of the housing portion 5 that houses the rod antenna 3 in the axial direction while sliding the rod antenna 3 on the upper surface of the bottom portion 12. The rod antenna 3 is disposed on the slide rail portion 13 from the storage opening 4 side to the back side. A substantially rectangular hole 14 is provided at a predetermined position on the storage opening side on the slide rail portion 13. Further, on the back side on the slide rail portion 13, a protruding rail 15 is provided along the longitudinal direction of the slide rail portion 13. A gentle inclined surface continuous from the bottom 12 is formed at the end of the convex rail 15 on the storage opening 4 side (see FIG. 9). Furthermore, the upper surface of the bottom part 12 is provided with a receiving part 16 into which a locking pillar 43 described later is fitted from above.

  The slider 21 as an antenna push-out means is a substantially rectangular long body extending in the longitudinal direction of the slide rail portion 13, and a substantially rectangular convex portion 22 is provided projecting downward on the lower surface of the end portion on the storage port 4 side. It has been. Further, a substantially cylindrical push-out portion 23 projects from the inner side surface at the end on the back side of the slider 21. In the vicinity of the push-out portion 23, a substantially triangular prism-shaped projection 24 that is engaged with the groove 6 of the rod antenna 3 is provided. The protrusion 24 engages with the groove 6 of the rod antenna 3 disposed on the slide rail portion 13 to become antenna holding means. Further, the base end side of the protrusion 24 is a leaf spring 25. Further, a substantially hook-like locking claw 26 for locking the other end of an urging means to be described later is provided at the back end of the slider 21. The slider 21 is provided in parallel with the rod antenna 3 disposed on the slide rail portion 13, and is configured to be slidable in parallel with the axial direction of the rod antenna 3.

  The tension spring 31 as an urging means includes locking rings 32 and 32 at both ends, the one end side ring 32 is locked to a locking column 43 of a cover member 41 described later, and the other end side ring 32 is The slider 21 is locked by the locking claw 26 of the slider 21 and biases the slider 21 toward the storage port 4 side. Further, the tension spring 31 is provided at a position away from the slide rail portion 13 of the base member 11. In the present embodiment, the tension spring 31 is provided in parallel with the rod antenna 3 like the slider 21.

  The cover member 41 described above is provided with a roof portion 42 formed in a curved surface substantially the same as the outer peripheral surface of the rod antenna 3 at the end on the storage port 4 side, and fitted into the receiving portion 16 at the end on the back side. A locking column 43 for locking the locking ring 32 of the tension spring 31 is provided. The cover member 41 is attached to the base member 11 and guides the sliding of the rod antenna 3 in the axial direction together with the sliding rail portion 13 of the base member 11, and forms a storage portion 5 for storing the rod antenna 3. ing.

  The locking means 45 is configured by fitting the hole portion 14 of the base member 11 and the convex portion 22 of the slider 21. The locking means 45 is configured when the slider 21 that slides reaches a predetermined position.

Next, with reference to FIGS. 5 to 8, the operation of each part constituting the extraction mechanism when the rod antenna is housed in the antenna extraction mechanism of the present embodiment will be described.
5 and 7 are plan views showing the operation of each part when the rod antenna is housed in the antenna extraction mechanism of the wireless transmitter according to the present invention, FIGS. 6 and 8 are the bottom views, and FIGS. 9A and 9B. FIG. 10 is a schematic front sectional view showing the locking operation of the locking means, and FIG. 10 is a schematic plan view showing the locking means.

First, as shown in FIG. 5, the rod antenna 3 with the rear end leading is inserted into the back side of the storage portion 5 while sliding on the slide rail portion 13 of the base member 11 in the axial direction. . At this time, the rear end surface of the rod antenna 3 comes into contact with the pushing portion 23 of the slider 21 as an antenna pushing means, and the groove 6 of the rod antenna 3 and the protrusion 24 of the slider 21 are engaged to accommodate the rod antenna 3. Hold at 5.
As shown in FIG. 6, there is a hole portion 14 of the base member 11 in the traveling direction of the convex portion 22 provided on the lower surface of the slider 21.

Next, as shown in FIG. 7, when the rod antenna 3 is further inserted to the back side, the rod antenna 3 pushes the slider 21 to the back side through the pushing portion 23. At this time, since both ends of the tension spring 31 as the biasing means are locked by the locking pillar 43 of the cover member 41 and the locking claw 26 of the slider 21, the rod antenna 3 is biased by the tension spring 31. The slider 21 is pushed in against it.
As shown in FIG. 8, when the slider 21 pushed by the rod antenna 3 reaches a predetermined position, the convex portion 22 of the slider 21 is inserted into the hole portion 14 of the base member 11 constituting the locking means 45. The slider 21 is locked, and the slider 21 is held at this position while being urged toward the storage port 4.

Here, the operation of the slider when locked by the locking means will be described with reference to FIGS.
As shown in FIG. 9A, the slider 21 pushed by the rod antenna 3 is guided by the inclined surface of the ridge rail 15 of the base member 11 and rides on the ridge rail 15. Then, as shown in FIG. 9B, when the convex portion 22 is inserted into the hole portion 14 of the base member 11, that is, when locked, the one end side of the slider 21 is lifted, and the other end of the slider 21 is Stress is applied so that the side (the side on which the convex portion 22 is provided) sinks downward. At this time, as shown in FIG. 10, the convex portion 22 of the slider 21 and the convex rails 15 of the base member 11 are in a positional relationship facing each other, thereby effectively pressing the convex portion 22 downward. Can do.
By adopting such a configuration, it is possible to reliably hold the state in which the convex portion 22 is fitted in the hole portion 14, and to prevent the lock unit 45 from being deteriorated over time. .

Next, a procedure for taking out the rod antenna housed in the housing part and the operation of each part of the antenna take-out mechanism of the present embodiment will be described.
In order to take out the rod antenna 3 stored in the storage unit 5 by the user, the convex part 22 (button) on the bottom surface of the housing 2 is pushed with a finger or the like to be released from the hole 14 and unlocked. As a result, the bias of the slider 21 that has been biased by the tension spring 31 is released, and the slider 21 slides toward the storage port 4. Along with this, the push-out portion 23 pushes the rear end face of the rod antenna 3 toward the storage port 4 to push out the rod antenna 3 from the storage port 4. At this time, the rod antenna 3 is exposed about half of the total length of the antenna from the storage port 4 and is then extracted by the user.

  According to this embodiment, even when the space in the axial direction of the antenna 3 cannot be secured by providing the slider 21 for pushing out the rod antenna 3 in parallel with the rod antenna 3 stored in the storage unit 5. It is possible to provide a mechanism for pushing out the rod antenna 3.

  The rear end surface of the rod antenna 3 housed in the housing part 5 is in contact with the pushing part 23 of the slider 21 that resists the biasing force of the tension spring 31. Therefore, when the lock by the locking means 45 is released, the slider 21 slides from the back side to the storage port 4 side along the axial direction of the rod antenna 3, and accordingly, the pushing portion 23 moves in the axial direction of the rod antenna 3. As a result, the rod antenna 3 can be pushed out of the housing 2.

  Furthermore, by providing such an antenna extraction mechanism 10 at the lower part of the casing 2 of the wireless transmitter 1, the rod antenna 3 having a relatively heavy weight is accommodated in the lower part of the casing 2, so that the wireless transmitter 1 is Stabilize.

  Further, the rod antenna 3 inserted from the storage port 4 pushes the slider 21 into the back side of the storage unit 5, so that the slider 21 pressed by the rod antenna 3 has the convex portion 22 when it reaches a predetermined position. It fits into the hole 14 of the base member 11 and is locked. As a result, the slider 21 can be held at a predetermined position while being urged toward the storage port 4.

  Further, the protrusion 24 of the slider 21 is engaged with the groove 6 at the rear end portion of the rod antenna 3, whereby the stored rod antenna 3 can be held in the storage portion 5.

In the embodiment described above, a tension spring is used as the biasing means 31 provided between the slider 21 and the cover member 41 and biasing the slider 21 toward the storage port 4 side. For example, a compression spring may be provided between the slider 21 and the cover member 41 to bias the slider 21 in a predetermined direction.
Further, even if a locking part (locking column 43 in the present embodiment) on one end side of the tension spring 31 as the biasing means is provided on a member other than the cover member 41, the same as in the above-described embodiment. The slider 31 can be biased toward the storage port 4 side.

  Furthermore, in the above-described embodiment, the slider 21 is configured to slide and push out the rod antenna 3 by the urging of the tension spring 31. For example, the pushing portion that is in contact with the rear end surface of the rod antenna 3 is the antenna 3. It is also conceivable that the rod antenna is provided at the end of the leaf spring disposed at a position deviated from the axial direction of the rod antenna, and the rod antenna is pushed out by urging the leaf spring. In such a configuration, the push-out portion pushed by the rod antenna 3 inserted from the storage port 4 is held by the locking means when it reaches a predetermined position. When the rod antenna 3 is taken out, the pushing portion moves substantially linearly along the axial direction of the antenna 3, and the rod antenna 3 is pushed out toward the storage port 4.

It is a perspective view which shows the radio transmitter provided with one Embodiment of the antenna extraction mechanism of the radio transmitter by this invention. It is a rear view of the same wireless transmitter. FIG. 3 is an AA end view in FIG. 2. It is a disassembled perspective view of the antenna extraction mechanism of the same embodiment. It is a top view which shows operation | movement of each part of the antenna extraction mechanism of the embodiment. It is the bottom view. It is a top view which shows operation | movement of each part of the antenna extraction mechanism of the embodiment. It is the bottom view. (A) It is typical front sectional drawing which shows the locking operation of the locking means which comprises the antenna extraction mechanism of the embodiment. (B) It is typical sectional drawing which shows the locking operation of the locking means which comprises the antenna extraction mechanism of the embodiment. It is a typical top view which shows the locking means which comprises the antenna extraction mechanism of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Radio transmitter 2 ... Housing 3 ... Rod antenna 4 ... Storage port 10 ... Antenna taking-out mechanism 11 ... Slide rail part 21 ... Slider as antenna pushing means 22 ... Convex part 23 ... Extrusion part 24 ... Protrusion 31 ... With Tension spring 45 ... Locking means

Claims (5)

In a wireless transmitter having a rod antenna that can be attached to and detached from a housing, and that can be housed inside the housing by inserting the rod antenna removed from the housing through a housing opening of the housing.
A base member provided with a sliding rail portion for slidingly guiding the rod antenna inserted from the storage port;
An antenna push-out means that contacts the rear end surface of the rod antenna housed in the housing and moves in the axial direction of the rod antenna;
A biasing means provided at a position deviating from the axial direction of the rod antenna housed in the housing, and biasing the antenna pushing means toward the housing opening;
Lock means for holding the antenna pushing means pushed by the rod antenna inserted from the storage port at a predetermined position against the biasing of the biasing means and releasing the holding state;
An antenna extraction mechanism for a wireless transmitter, comprising: In a wireless transmitter having a rod antenna that can be attached to and detached from a housing, and that can be housed inside the housing by inserting the rod antenna removed from the housing through a housing opening of the housing.
A base member provided with a sliding rail portion for slidingly guiding the rod antenna inserted from the storage port;
A push-out portion that is in contact with the rear end surface of the rod antenna housed in the housing is provided, and is provided in parallel with the housed rod antenna and slides in parallel with the axial direction of the rod antenna. Antenna pushing means;
A biasing means provided at a position deviating from the axial direction of the rod antenna housed in the housing, and biasing the antenna pushing means toward the housing opening;
A lock that holds the antenna push-out means pushed through the push-out portion to the rod antenna inserted from the storage port at a predetermined position against the bias of the biasing means and releases the hold state. Means,
An antenna extraction mechanism for a wireless transmitter, comprising: The locking means comprises a hole provided in the base member and a convex part provided in the antenna pushing means,
3. The radio transmitter according to claim 1, wherein when the antenna push-out means pushed by the rod antenna reaches the predetermined position, the convex portion fits into the hole and locks. Antenna extraction mechanism.   4. An antenna extraction mechanism for a radio transmitter according to claim 1, 2 or 3, further comprising an antenna holding means for holding the rod antenna housed in the housing inside the housing. The antenna holding means comprises a groove formed on the outer peripheral surface of the rear end side of the rod antenna, and a protrusion provided on the antenna pushing means,
5. The radio transmitter antenna extraction mechanism according to claim 4, wherein the protrusion engages with the groove of the rod antenna to hold the rod antenna inside the housing.

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