JP2005045625A - Keyless entry receiver and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyless entry receiver whose body size can be made small while securing high antenna gain and to provide its manufacturing method. <P>SOLUTION: This keyless entry receiver 10 is provided with a printed circuit board 40 and an antenna 50 electrically connected to the printed circuit board 40 in a case consisting of an upper case 20 and a lower case 30. The upper case 20 is fixed to the lower case 30, and the end part 50a of the antenna 50 is brought into press-contact with the electrode 41 of the printed circuit board 40 to secure an electrically connected state each other. Since the antenna 50 is formed integrally on the wall surface of the upper case 20 in this way, the body size of the keyless entry receiver 10 can be made small while securing the high antenna gain. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a keyless entry receiver used in a vehicle such as an automobile, a house, and the like, and a manufacturing method thereof.

  2. Description of the Related Art Conventionally, there is a keyless entry system that includes a keyless entry transmitter and a keyless entry receiver as a control system for opening and closing a vehicle door and starting an engine. In the case of this system, when a signal is transmitted from the keyless entry transmitter by the driver's operation, the keyless entry receiver mounted on the vehicle side receives the transmission signal and determines whether the signal is from the paired transmitter. I do. If it is correct, a control signal corresponding to the transmission signal is output to the control ECU to open / close the door, start the engine, and the like.

  In this system, a keyless entry receiver includes a printed circuit board 40 and an antenna 51 electrically connected to the printed circuit board 40 in an internal space composed of an upper case 20 and a lower case 30, as shown in FIG. It is made by storing. The antenna 51 is formed three-dimensionally by bending a metal wire in order to ensure a high antenna gain. The end of the antenna 51 is joined to the electrode 41 of the printed circuit board 40 by solder and disposed on the surface of the printed circuit board 40. The holder 45 is supported and fixed.

  However, in the case of the keyless entry receiver 10 described above, an installation space for the holder 45 is required on the surface of the printed circuit board 40. Further, if a gap is not provided between the antenna 51 and the case 20, there is a problem that the antenna 51 vibrates due to the vibration of the vehicle and a sound is generated due to contact with the case 20. That is, it is difficult to reduce the size of the body while ensuring a high antenna gain (without reducing the antenna height).

  In view of the above problems, an object of the present invention is to provide a keyless entry receiver capable of reducing the size of the body while ensuring a high antenna gain, and a method for manufacturing the same.

  In order to achieve the above object, a keyless entry receiver according to claim 1 is provided with a printed circuit board and an antenna electrically connected to the printed circuit board in a case. The antenna is integrally provided on the wall surface of the case.

  As described above, since the antenna is integrally provided on the wall surface of the case, a holder for supporting and fixing the antenna is not required. Therefore, the installation space for the holder is not required on the surface of the printed board, and the printed board can be made smaller. Moreover, since the antenna is integrally provided on the wall surface of the case, there is no need to provide a gap between the antenna and the case. Therefore, the keyless entry receiver of the present invention can be downsized without reducing the antenna height (that is, while maintaining a high antenna gain).

  In addition, since the holder for supporting and fixing the antenna is unnecessary, the number of parts can be reduced.

  Also, since there is no need to provide a gap between the antenna and the case in the height direction, if the case height is not changed (not downsized in the height direction), the antenna height is increased by the gap. The antenna gain can also be improved.

  According to a second aspect of the present invention, the case is composed of a resin upper case in which an antenna is integrally provided on a wall surface, and a lower case, and the end of the antenna is fixed to the lower case. Is preferably pressed against the printed circuit board.

  The case does not consist of a pair of an upper case and a lower case, but may be a single case when, for example, an antenna is insert-molded into the case. However, if the case consists of an upper case and a lower case, and the antenna is provided on the upper case wall made of resin, the upper case is fixed to the lower case, and the end of the antenna is pressed against the printed circuit board. It can also be electrically connected. Therefore, the electrical connection state between the end of the antenna and the printed board can be easily ensured.

  Further, if the case is divided into an upper case and a lower case, for example, when the antenna is formed on the inner wall surface of the upper case, the inner wall surface is exposed, so that the antenna can be easily formed on the wall surface.

  When the upper case is made of resin, the antenna is integrated with the upper case by using any one of plating, vapor deposition, application of conductive paint, adhesion, heat caulking, and insert molding as described in claim 3. Can be provided.

  As specific means for fixing the upper case to the lower case, as described in claim 4, fitting or screwing can be mentioned.

  In either case, the end of the antenna and the printed circuit board can be electrically connected to each other by press contact with the upper case fixed to the lower case.

  According to a fifth aspect of the present invention, it is preferable that at least one of a connection portion of the printed board with the antenna and a connection portion of the antenna with the printed board has a spring portion as a connection terminal made of a conductive material and elastically deformable. .

  If the connection terminal has an elastically deformable spring portion, the contact pressure between the end portion of the antenna and the printed circuit board is secured by the reaction force of the spring, so that connection reliability can be improved. .

  In addition, as described in claim 6, the case may have a reflector that reflects electromagnetic waves from a specific direction at a predetermined position on the wall surface.

  If the case has a reflector at a predetermined position on the wall surface, the electromagnetic wave from the reflector is reflected, so that the directivity of the antenna can be changed. Therefore, it is possible to adjust the antenna so that it has high directivity in a predetermined direction.

  When the case has a reflecting plate, the reflecting plate may be formed using the same material as the antenna as described in claim 7.

  If the reflector is formed of the same material as the antenna, the reflector and the antenna can be provided in the case in the same process. Therefore, the manufacturing process can be simplified.

  Next, according to a method for manufacturing a keyless entry receiver, an antenna forming step of forming an antenna on a wall surface of an upper case made of resin, and a printed board having an electrode at a connection portion with the antenna as described in claim 8 A fixing step of fixing the upper case to the lower case while being housed in an internal space composed of the upper case and the lower case. In the fixing step, the upper case is fixed to the lower case, and the end portion of the antenna and the electrode of the printed circuit board are pressed and electrically connected.

  Thus, according to the manufacturing method of the keyless entry receiver of the present invention, the antenna is integrally formed on the wall surface of the upper case, so that the installation space for the holder for supporting and fixing the antenna on the printed circuit board surface becomes unnecessary. In addition, a gap between the antenna and the upper case becomes unnecessary. Therefore, the size of the keyless entry receiver can be reduced without reducing the antenna height (that is, while maintaining a high antenna gain).

  In addition, since the holder for supporting and fixing the antenna is unnecessary, the number of parts can be reduced.

  Also, since there is no need to provide a gap between the antenna and the upper case in the height direction, the antenna height should be increased by the gap when the case height is not changed (not downsized in the height direction). In addition, the antenna gain can be improved.

  Further, since the antenna is integrally formed with the upper case, the upper case can be fixed to the lower case, and the end portion of the antenna and the printed board can be electrically connected by pressure contact. That is, the electrical connection state between the end portion of the antenna and the printed board can be easily ensured.

  Further, since the case is divided into the upper case and the lower case, when the antenna is formed on the inner wall surface of the upper case, there is an advantage that the inner wall surface is exposed and the antenna can be easily formed.

  At this time, as a fixing method for fixing the upper case to the lower case, it is preferable that either the fitting or screw tightening is used as described in claim 9.

  In either case, by fixing the upper case to the lower case, the end of the antenna and the electrode of the printed circuit board are pressed against each other, and an electrical connection state can be ensured.

  Moreover, it is preferable that the formation method of an antenna is any one of plating, vapor deposition, application of a conductive paint, adhesion, heat caulking, and insert molding as described in claim 10.

  Whichever is used, the antenna can be integrally formed on the upper case wall surface made of resin.

  The printed circuit board has an elastically deformable spring portion made of a conductive material on the electrode, and the electrode of the printed circuit board and the end of the antenna are interposed through the spring portion in the fixing step. It is preferable to be electrically connected.

  If an elastically deformable spring portion is provided on the electrode, the contact pressure between the antenna end and the printed circuit board electrode can be secured by the reaction force of the spring, and the connection reliability can be improved. .

  According to a twelfth aspect of the present invention, in the antenna forming step, an elastically deformable spring portion made of a conductive material may be formed at the end portion of the antenna connected to the printed circuit board. In this case as well, the contact pressure between the end of the antenna and the electrode of the printed circuit board can be secured by the reaction force of the spring, and the connection reliability can be improved.

  According to a thirteenth aspect of the present invention, it is preferable to provide a reflector forming step of forming a reflector that reflects electromagnetic waves from a specific direction on the wall surface of the case. At that time, as described in claim 14, it is preferable that the reflecting plate forming step is performed as the same step as the antenna forming step.

  Since the operational effects described in claims 13 and 14 are the same as the operational effects described in claims 6 and 7, the description thereof is omitted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is an exploded perspective view showing a configuration of a keyless entry receiver according to the present embodiment. In FIG. 1, for convenience, an antenna formed on the inner wall surface of the upper case is illustrated (shown by hatching). The keyless entry receiver according to the present embodiment is used for door opening / closing control, engine starting control, or entrance door opening / closing control of a vehicle such as an automobile.

  As shown in FIG. 1, the keyless entry receiver 10 includes a pair of an upper case 20 and a lower case 30 as a case, a printed board 40 accommodated in an internal space including the cases 20 and 30, and the printed board 40. And an antenna 50 for receiving a signal transmitted from a keyless entry transmitter (not shown).

  The upper case 20 is made of a synthetic resin material and is provided in a substantially box shape by molding. An antenna 50 having a predetermined pattern is integrally formed on the inner wall surface. Further, a cutout portion 21 is formed on a side surface of the upper case at a portion corresponding to the connector portion 41 mounted on the surface of the printed board 40. The upper case 20 may be made of ceramic in addition to the synthetic resin, but is preferably a synthetic resin from the viewpoint of ease of formation as a case and ease of formation of an antenna.

  Here, the antenna 50 provided in the upper case 20 will be described with reference to FIGS. 2A is a plan view of the upper case 20 shown in FIG. 1 as viewed from the inside, and FIG. 2B is a cross-sectional view of the upper case 20 shown in FIG. In FIG. 2A, the part indicated by the broken line AA is a part corresponding to the AA cross section of FIG.

  As shown in FIG. 2A, contact portions 22 that come into contact with the surface of the printed circuit board 40 when the upper case 20 is fixed to the lower case 30 are provided at the four corners on the inner surface side of the upper case 20. The contact portion 22 is formed so that the contact surface with the printed circuit board 40 is substantially on the same plane, and an end portion 50a of the antenna 50 is formed in one of them. Therefore, the antenna 50 is three-dimensionally formed over the contact portion 22, the side surface 23, and the bottom surface 24, as shown in FIG.

  In addition, among the remaining contact portions 22, two diagonal positions excluding the contact portion 22 where the end portion 50a is formed are provided via a lower case 30 and a printed circuit board 40 as shown in FIG. A screw (not shown) is fastened (only the screw hole 25 is shown in the figure). Therefore, the printed circuit board 40 is fixed between the two contact portions 22 and the lower case 30 while contacting the four contact portions 22 of the upper case 20. In the present embodiment, an example in which the contact portions 22 are provided at the four corners of the upper case 20 is shown, but the present invention is not limited to this example. For example, the contact portions 22 may be provided only at two diagonal positions. In this case, since the screw tightening is performed at the contact portion 22 where the end portion 50a of the antenna 50 is formed, care must be taken so that the formation position of the end portion 50a and the screw fastening position do not overlap.

  The lower case 30 is made of a synthetic resin material similarly to the upper case 20, and is provided with a substantially rectangular base 31 and diagonal positions of the base 31, as shown in FIG. The pair of fixing portions 32 corresponding to the pair of contact portions 22 and the extending portion 33 extending in the vertical direction with respect to the base portion 31. And the fixing | fixed part 32 is located above the base 31 (upper case 20 side) following the base 31, and has the through-hole 34 for fixing with a screw | thread. Therefore, the printed circuit board 40 is disposed on the fixed portion 32 and is held by the extending portion 33. In the present embodiment, the lower case 30 is made of a synthetic resin like the upper case 20. However, as shown in FIG. 1, the fixing portion 32 is located above the base portion 31, and the surface on which the electrode 41 is not formed of the printed circuit board 40 is disposed away from the base portion 31, so It may be formed. Further, even when the fixing portion 32 is not positioned above the surface of the base portion 31, when an electrical connection region is not provided at the contact portion with the lower case 30 of the printed circuit board 40, You may form from a metal. Further, in the present embodiment, the example in which only one pair of the fixing portions 32 is provided at the diagonal positions of the base portion 31 is shown, but the fixing portions 32 may be provided at the four corners of the base portion 31.

  As shown in FIG. 1, the printed circuit board 40 is formed in a substantially rectangular shape, and an electrode 41 for connection with the antenna 50 is provided at a position corresponding to the end 50 a of the antenna 50 formed on the upper case 20. Have. Further, a pair of through holes 43 for fixing with screws are provided at positions corresponding to the through holes 34 of the lower case 30, and a connector 42 for outputting a control signal to the control ECU is mounted on the surface of the substrate. Yes.

  The keyless entry receiver 10 configured as described above is disposed, for example, in the instrument panel of the vehicle or under the rear quarter glass. When a signal transmitted from the keyless entry transmitter is received by the driver's operation, the pairless transmission is first performed. Whether the signal is a signal from the machine is determined. If the signal is correct, a control signal corresponding to the transmission signal is output to the control ECU via the connector 42. Then, the door is opened and closed and the engine is started.

  Next, a manufacturing method of the keyless entry receiver 10 will be described with reference to FIG. In the present embodiment, the lower case 30 and the printed circuit board 40 are prepared in advance.

  First, an antenna forming step for forming the antenna 50 (including the end portion 50a) on the inner wall surface of the upper case 20 made of synthetic resin is performed. As shown in the present embodiment, when the case is composed of the upper case 20 and the lower case 30, when the antenna 50 is formed on the inner wall surface of the upper case 20, the upper case that is the surface on which the antenna 50 is formed. Since the inner wall surface 20 is exposed, it is easy to form the antenna 50 on the inner wall surface.

  Examples of the method for forming the antenna 50 include metal plating, metal vapor deposition, and application of conductive paint. In addition, a conductive foil, metal plate, or metal wire processed into a desired pattern may be bonded to the upper case 20, or the metal plate or metal wire processed into a desired pattern may be bonded by heat caulking. It may be fixed to the case 20. Alternatively, insert molding may be performed simultaneously with the formation of the case 20 using a metal plate or metal wire processed into a desired pattern as an insert part. In any of the methods, the antenna 50 can be integrally provided on the upper case 20, so that a holder is unnecessary and the degree of freedom of the antenna shape is improved. That is, by improving the degree of freedom of the antenna shape, it becomes easy to ensure the antenna shape according to the required antenna directivity. In particular, it is preferable to form the antenna 50 by any one of metal plating, metal vapor deposition, and application of a conductive paint because the processing of the metal wire or the metal plate is unnecessary and the degree of freedom of the antenna shape is further improved. In the present embodiment, the antenna 50 is formed by metal vapor deposition.

  After the antenna 50 is formed, next, a fixing process for fixing the upper case 20, the lower case 30, and the printed circuit board 40 is performed. In the present embodiment, fixing by screw tightening is performed as an example of a fixing method.

  First, the printed circuit board 40 is arranged with respect to the lower case 30 so that the electrode 41 non-formation surface of the printed circuit board 40 is in contact with the pair of fixing portions 32 of the lower case 30. At this time, since the extended portion 33 is provided in the lower case 30, the printed circuit board 40 is held by the extended portion 33 and positioned with respect to the lower case 30. Therefore, the through hole 43 provided in the printed circuit board 40 and the through hole 33 provided in the lower case 30 overlap.

  Then, the upper case 20 is fitted to the lower case 30 from the printed circuit board 40 arrangement side so that the extending portion 33 of the lower case 30 is in contact with the inner wall surface of the upper case 20. In this state, the contact portion 22 of the upper case 20 is in contact with the surface of the printed circuit board 40, but the contact state between the end portion 50a of the antenna 50 and the electrode 41 of the printed circuit board 40 is unstable. Is screwed into the contact portion 22 of the upper case 20 through the through hole 33 and the through hole 43. As a result, the end portion 50a of the antenna 50 provided on the contact portion 22 and the electrode 41 provided on the surface of the printed circuit board 40 are brought into pressure contact with each other, so that an electrical connection state is ensured and the upper case 20 is secured to the lower case. The keyless entry receiver 10 is formed completely fixed to 30.

  Thus, according to the present invention, since the antenna 50 is integrally formed with the upper case 20, the upper case 20 is fixed to the lower case 50, and the end portion 50a of the antenna 50 and the electrode 41 of the printed circuit board 40 are pressed by pressure contact. Can be electrically connected. Conventionally, in order to ensure the electrical connection between the end 50a of the antenna 50 and the electrode 41 of the printed circuit board 40, joining by jet soldering or the like was necessary. Therefore, the electrical connection state between the end portion 50a of the antenna 50 and the printed circuit board 40 can be easily ensured without performing soldering or the like. Therefore, since the jet soldering process can be eliminated, for example, even when a spring portion as a connection terminal to be described later is mounted on the electrode 41 of the printed circuit board 40, mounting in the reflow process is possible.

  Further, since the antenna 50 is integrally formed on the inner wall surface of the upper case 20, a holder for supporting and fixing the antenna 50 as in the conventional case is not necessary. That is, a space for installing the holder on the surface of the printed circuit board 40 is not necessary, and a gap between the antenna 50 and the upper case 20 is not necessary. Therefore, the physique of the keyless entry receiver 10 can be reduced in size (the height direction and the plane direction of the printed circuit board 40) without reducing the height of the antenna 50 (that is, while maintaining a high antenna gain). Further, when the heights of the cases 20 and 30 are not changed (not downsized in the height direction), the height of the antenna 50 can be increased by the gap, and the antenna gain can be improved.

  Furthermore, since a holder for supporting and fixing the antenna 50 is not necessary, the number of parts can be reduced.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made.

  In the present embodiment, an example in which the printed circuit board 40 is arranged on the lower case 30 and then fixed to the upper case 20 has been shown. However, the printed circuit board 40 may be disposed on the upper case 20 and then the lower case 30 may be fitted and fixed.

  Moreover, in this embodiment, the fixing method by screwing was shown as a fixing method of the upper case 20 to the lower case 30. However, the upper case 20 is fixed to the lower case 30 and the end 50a of the antenna 50 is pressed against the electrode 41 of the printed circuit board 40, and the fixing method can secure an electrical connection state. It is not something. For example, an electrical connection state between the end portion 50 a of the antenna 50 and the electrode 41 of the printed circuit board 40 may be ensured while the upper case 20 is fitted to the lower case 30.

  Further, in the present embodiment, an example in which the end portion 50a of the antenna 50 provided in the upper case 20 is in direct contact with the electrode 41 of the printed circuit board 40 to ensure an electrical connection state. However, as shown in FIG. 3, an elastically deformable spring portion 44 made of a conductive material is formed on the electrode 41 of the printed circuit board 40, and the electrode 41 and the end portion 50 a of the antenna 50 are connected via the spring portion 44. Are preferably electrically connected. FIG. 3 is an enlarged side view of the printed circuit board 40 showing a modification of the present embodiment. If the printed circuit board 40 has a spring portion 44 as a connection terminal on the electrode 41, when the case 20 is fixed to the lower case 30, the end portion 50a of the antenna 50 is caused by the reaction force of the elastically deformed spring portion 44. And the contact pressure between the electrodes 41 of the printed circuit board 40 can be ensured, and the connection reliability can be improved. At that time, a plurality of spring portions 44 may be provided. 3 shows an example in which the spring portion 44 is provided on the electrode 41 of the printed board 40, the spring portion 44 may be provided on the end portion 50a of the antenna 50, or the electrode 41 of the printed board 40 may be provided. Spring portions 44 may be provided on both the upper portion and the end portion 50 a of the antenna 50. Also in this case, the contact pressure between the end portion 50a of the antenna 50 and the electrode 41 of the printed circuit board 40 can be secured by the reaction force of the elastically deformed spring portion 44, so that the connection reliability can be improved. it can.

  Further, in the present embodiment, an example in which the antenna 50 is formed only on the inner wall surface of the upper case 20 is shown. However, it may be formed on the outer wall surface. However, considering contact with the outside, insulation, and the like, it is preferable to form the contact surface with the inner wall surface or the lower case 30 as shown in the present embodiment.

  In the present embodiment, an example in which only the antenna 50 is formed on the inner wall surface of the upper case 20 is shown. However, as shown in FIG. 4, a reflector 60 that reflects electromagnetic waves from a specific direction may be formed on the wall surface of the upper case 20 together with the antenna 50. FIG. 4 is a perspective view of the upper case 20 showing a modification of the present embodiment. When the upper case 20 has the reflecting plate 60 at a predetermined position on the side surface, the electromagnetic wave from the reflecting plate 60 side is reflected, so that the directivity of the antenna 50 can be changed. Therefore, the antenna 50 can be adjusted so as to have high directivity in a predetermined direction.

  At that time, the shape and formation position of the reflecting plate 60 are determined according to the required directivity of the antenna 50. Therefore, in FIG. 4, an example in which the solid pattern reflector 60 is formed on the outer wall surface of the side surface 23 of the upper case 20 is shown, but it may be provided on the bottom surface 24 of the upper case 20 or on the inner wall surface. Also good. Further, the lower case 30 may be provided. The shape of the reflecting plate 60 may be a mesh shape or a meandering shape as long as it can reflect electromagnetic waves.

  Further, when the cases 20 and 30 have the reflection plate 60, the reflection plate 60 may be formed using the same material as the antenna 50. If the reflecting plate 60 is formed of the same material as the antenna 50, the reflecting plate forming step and the antenna forming step can be performed in the same step, so that the manufacturing process can be simplified.

  Further, in the present embodiment, an example in which the case is configured by two bodies of the upper case 20 and the lower case 30 is shown. However, the case may be composed of only one body or may be composed of three or more bodies. For example, in the case where the antenna 50 is integrally provided on the inner wall surface of the case that is formed integrally by insert molding, the printed circuit board 40 is inserted along the guide in the case from an opening provided in the case in advance. At the same time, electrical connection between the electrode 41 of the printed circuit board 40 and the end 50a of the antenna 50 can be secured. When it is desired to make the inside of the case airtight, the opening may be sealed with resin or the like after the printed board 40 is inserted.

It is a disassembled perspective view which shows the structure of the keyless entry receiver in the 1st Embodiment of this invention. It is a figure for demonstrating an antenna, (a) is the top view which looked at the upper case inside, (b) is sectional drawing in the AA cross section of FIG. It is an enlarged side view of the printed circuit board for demonstrating a modification. It is a perspective view of the upper case for demonstrating a modification. It is a disassembled perspective view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Keyless entry receiver 20 ... Upper case 30 ... Lower case 40 ... Printed circuit board 41 ... Electrode 50 ... Antenna 50a ... (antenna) edge part

Claims (14)

A keyless entry receiver comprising a printed circuit board and an antenna electrically connected to the printed circuit board in a case,
The keyless entry receiver, wherein the antenna is integrally provided on a wall surface of the case. The case is configured by a resin upper case and a lower case in which the antenna is integrally provided on a wall surface, and the end of the antenna is the printed circuit board with the upper case fixed to the lower case. The keyless entry receiver according to claim 1, wherein the keyless entry receiver is pressed against the keyless entry. 3. The keyless entry receiver according to claim 2, wherein the antenna is provided using any one of plating, vapor deposition, application of conductive paint, adhesion, heat caulking, and insert molding. The keyless entry receiver according to claim 2 or 3, wherein the upper case is fixed to the lower case by fitting or screwing. 2. A spring portion as a connection terminal made of a conductive material and elastically deformable is provided in at least one of a connection portion of the printed circuit board with the antenna and a connection portion of the antenna with the printed circuit board. The keyless entry receiver of any one of -4. The keyless entry receiver according to any one of claims 1 to 5, wherein the case includes a reflector that reflects electromagnetic waves from a specific direction at a predetermined position on the wall surface. The keyless entry receiver according to claim 6, wherein the reflector is formed using the same material as the antenna. An antenna forming step of forming an antenna on the wall surface of the upper case made of resin;
A keyless entry receiver comprising: a fixing step of fixing the upper case to the lower case while housing a printed circuit board having an electrode at a connection portion with the antenna in an internal space composed of the upper case and the lower case. A manufacturing method comprising:
In the fixing step, the upper case is fixed to the lower case, and the end of the antenna and the electrode of the printed circuit board are press-contacted and electrically connected to each other. Method. The method for manufacturing a keyless entry receiver according to claim 8, wherein a method of fixing the upper case to the lower case is one of fitting and screwing. 10. The manufacturing method of the keyless entry receiver according to claim 8, wherein the antenna is formed by any one of plating, vapor deposition, application of conductive paint, adhesion, heat caulking, and insert molding. Method. The printed circuit board has an elastically deformable spring portion made of a conductive material on the electrode, and the electrode and the end of the antenna are electrically connected through the spring portion in the fixing step. The manufacturing method of the keyless entry receiver of any one of Claims 8-10 characterized by these. The elastic forming deformable spring portion made of a conductive material is formed at an end portion of the antenna which is a connection portion with the printed circuit board in the antenna forming step. The manufacturing method of the keyless entry receiver of description. The method of manufacturing a keyless entry receiver according to any one of claims 8 to 12, further comprising a reflecting plate forming step of forming a reflecting plate that reflects electromagnetic waves from a specific direction on a wall surface of the case. The method of manufacturing a keyless entry receiver according to claim 13, wherein the reflecting plate forming step is performed as the same step as the antenna forming step.

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