JP2002054612A - Actuator case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an actuator case capable of achieving compactness and extreme simplicity in which a case can be coupled with a cover to provide a water-proofing function. SOLUTION: This actuator case 1 is disposed between the case 2 and the cover 3, and provided with a weld member 4 to be energized to fuse the case 2 and the cover 3 for jointing them with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator case for an actuator used for driving, for example, a power window device or a sunroof device of an automobile.

[0002]

2. Description of the Related Art In this type of actuator case, a cover is fixed to the case by screwing screws.

[0003]

However, in the above-mentioned actuator case, a man-hour for screwing is required, and a screwing portion must be formed on both the cover and the case. There is a problem that the outer shape of the entire actuator case becomes large because it is formed to protrude outside the cover and the case.
Also, in order to provide a waterproof function, rubber packing was inserted between the cover and the case, or butyl rubber was sealed.However, the rubber packing is easily twisted. On the other hand, there is a problem that it is difficult to control the amount of butyl rubber when the butyl rubber is sealed.

[0004]

The object of the present invention is to reduce the size and
An object of the present invention is to provide an actuator case that can be extremely simply combined with a case and a cover, including a waterproof function.

[0005]

Configuration of the Invention

[0006]

According to a first aspect of the present invention, there is provided an actuator case comprising: a case having a flange formed on an outer periphery; and a cover coupled to the case. The flange portion has a case-side welding member housing portion formed in a concave shape over substantially the entire circumference, and a current-carrying portion housing portion connected to the case-side welding member housing portion. A cover-side welding member housing portion formed in a concave shape over substantially the entire periphery of the cover is formed opposite to the member housing portion, and is sandwiched between the case-side welding member housing portion of the case and the cover-side welding member housing portion of the cover. It has a current-carrying part at both ends and is energized to generate heat,
A welding member capable of melting and joining the case-side welding member housing portion and the cover-side welding member housing portion is provided, and a current-carrying portion of the welding member is arranged so as to protrude from the current-carrying portion housing portion when power is supplied. It is characterized in that it is configured to be cut at a position where it can be accommodated in the current-carrying unit accommodating part when it is completed.

The actuator case according to a second aspect of the present invention is characterized in that the enclosing member is sealed in the energizing portion housing after the energizing portion of the welding member is cut.

[0008]

In the actuator case according to the present invention, by energizing the case and the cover, the welding member accommodating portion of the case and the cover-side welding member accommodating portion of the cover are fused to each other. Joined. The current-carrying portion of the welding member is arranged so as to protrude from the current-carrying-portion accommodating portion when current is supplied, and is cut at a position where it can be accommodated in the current-carrying-portion accommodating portion when the current supply is completed. Therefore, the connection including the waterproof function is performed without using the screws, and there is no portion protruding outside the case and the cover, so that the entire outer shape does not become large.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

[0010]

【Example】

FIGS. 1 to 7 show an embodiment of an actuator case according to the present invention.

The illustrated actuator case 1 comprises a case 2, a cover 3, and a welding member 4.

Case 2 is made of thermoplastic resin.
The cross section is formed in a U-shape. This case 2
A flange 2b is formed at the tip of the side plate 2a that is arranged so as to surround the outside. Upper surface 2 of flange portion 2b
b1 abuts on a case connecting portion 3b formed on the lower surface 3a of the cover 3.

On the cover 3 side of the flange portion 2b, a case-side welding member housing portion 2c formed in a concave groove shape and endless is formed. As shown in FIG. 6, the depth dimension L1 of the case-side welding member housing portion 2c is slightly smaller than half the diameter dimension d1 of the welding member 4.

A circuit board 5a provided in the control circuit section 5 is arranged inside the side plate 2a of the case 2.

An energizing portion accommodating portion 2d is formed in a part of the side plate 2a of the case 2. The current-carrying-unit housing 2d is
A current-carrying-portion housing portion 2 which is formed in a rectangular box shape and protrudes outside the side plate 2a and has two notches 2d1 and 2d2.
“d” communicates with the case-side welding member housing portion 2c.

As in the case 2, the cover 3 is formed in a plate shape using a thermoplastic resin as a material. An end of the lower surface 3a of the cover 3 is provided with a case connecting portion 3 made flat.
b is formed.

On the case 2 side of the case connecting portion 3b, a case-side welding member accommodating portion 2c and a pair of cover-side welding member accommodating portions 3c, which are formed in a concave groove and endless, are formed.
As shown in FIG. 6, the cover-side welding member housing 3
The depth L2 of c is slightly smaller than half the diameter d1 of the welding member 4.

As shown in FIG. 4, the welding member 4 is a single conductive wire having a predetermined conduction resistance. The welding member 4 includes a case-side welding-member housing 2c and a cover-side welding member. The welding member housing portion 3c is provided with a welding member main body 4a having substantially the same outer shape. The welding member 4 has a diameter dimension d1 that is larger than the sum of the depth dimension L1 of the case-side welding member housing section 2c and the depth dimension L2 of the cover-side welding member housing section 3c. The welding member 4 may have a polygonal cross section as shown in FIG. 4 or a circular cross section as shown in FIGS.

At the end of the welding member body 4a of the welding member 4, first and second current-carrying portions 4b and 4c are formed, respectively. At the tip of the first and second conducting parts 4b and 4c,
Cut portions 4b1 and 4c1 are formed respectively. The cut portions 4b1 and 4c1 are cut after power is supplied. The first and second energizing portions 4b and 4c from which the cut portions 4b1 and 4c1 have been cut are accommodated in an energizing portion accommodating portion 2d of the case 2, and an enclosing member 7 such as butyl rubber is accommodated in the energizing portion accommodating portion 2d. Enclosed. The enclosing member 7 includes the energizing section housing section 2
By closing d, it has a function of preventing intrusion of water into the actuator case 1 from between the first and second conducting parts 4b and 4c.

The case 2, the cover 3, and the welding member 4 are assembled by the following procedure. First, the welding member 4 is housed in the case-side welding member housing portion 2c of the case 2. At this time, the cut portions 4b1 and 4c1 of the first and second current-carrying portions 4b and 4c are respectively provided by the first and second current-carrying portions 4b and 4c being disposed in the current-carrying portion accommodating portion 2d. It is arranged to protrude outward through the notches 2d1 and 2d2.

Then, the cover 3 is covered with the welding member 4 housed in the case-side welding member housing portion 2c of the case 2 with the cover-side welding member housing portion 3c. At this time, as shown in FIG. 6, the diameter dimension d1 of the welding member 4 is the depth dimension L1 of the case-side welding member housing section 2c and the depth dimension L2 of the cover-side welding member housing section 3c.
Is larger than the sum of
The upper surface 2b1 of b does not contact the case coupling portion 3b of the lower surface 3a of the cover 3.

Next, the cut portions 4b1 and 4c of the first and second conducting portions 4b and 4c projecting from the conducting portion housing portion 2d.
1 is electrically connected to a current-carrying jig (not shown), and a predetermined current flows through the welding member 4 from the current-carrying jig. The welding member 4 to which the current has flowed generates heat due to the internal resistance, and melts the contact portion with the case-side welding member housing portion 2c and the contact portion with the cover-side welding member housing portion 3c. Then, the welding member 4 is moved to the case-side welding member accommodation portion 2c.
And, it penetrates into the cover side welding member housing portion 3c. After that, a predetermined cooling time elapses,
As shown in FIG. 7, the upper surface 2b1 of the flange portion 2b of the case 2 comes into contact with the case coupling portion 3b of the lower surface 3a of the cover 3.

Subsequently, the energizing jig is removed from the cut portions 4b1 and 4c1 of the first and second energized portions 4b and 4c, and the first and second energized portions 4b and 4c are cut in the energized portion accommodating portion 2d. The portions 4b1 and 4c1 are cut off, respectively,
A sealing member 7 such as butyl rubber is sealed in d. First and second energizing portions 4 from which cut portions 4b1 and 4c1 are cut
The b and 4c are housed in the current-carrying-unit housing 2d of the case 2, and the case 2 and the cover 3 are joined together in a firm and watertight manner.

As described above, the case 2 and the cover 3 are melted and joined to each other when the welding member 4 is energized, so that the case 2 and the cover 3 can be extremely easily connected without using a screw, including a waterproof function. When the binding is performed, Case 2,
Since there is no portion protruding outside the cover 3, the entire outer shape does not increase.

[0026]

As described above, according to the actuator case of the present invention, the case and the cover are energized to the welding member, so that the case-side welding-member accommodating portion of the case and the cover-side of the cover. The welding member housing portion is melted and joined to each other. The current-carrying part of the welding member
It is arranged so as to protrude from the current-carrying-portion accommodating portion when power is supplied, and is cut at a position where it can be accommodated in the current-carrying portion-accommodating portion when power supply is completed. Therefore, the connection including the waterproof function is performed without using the screws, and there is no portion protruding outside the case and the cover, so that the entire outer shape does not become large. Therefore, it is possible to achieve an excellent effect that the case and the cover can be joined together, including the waterproof function, while simplifying the size as well as being extremely simple.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of an embodiment of an actuator case according to the present invention.

FIG. 2 is a plan view of a cover used for the actuator case shown in FIG.

FIG. 3 is a plan view of a case used for the actuator case shown in FIG.

FIG. 4 is a plan view of a welding member used for the actuator case shown in FIG.

FIG. 5 is a partially cutaway plan view of the actuator case shown in FIG. 1 during assembly.

6 is a cross-sectional view of the actuator case shown in FIG. 1 during assembly.

FIG. 7 is a cross-sectional view of the actuator case shown in FIG. 1 when assembly is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Actuator case 2 Case 2a (outside plate) side plate 2c Case-side welding member housing part 2d Current-carrying part housing part 3 Cover 3c Cover-side welding member housing part 4 Welding member 4b (Electrification part) First current-carrying part 4b1 Cut part 4c ( Current-carrying part) Second current-carrying part 4c1 Cut part 7 Enclosure member

Continued on the front page F term (reference) 3D127 AA11 AA17 CB01 DF03 DF04 GG08 3J001 FA02 GA06 HA04 HA08 JD11 KA06 KA23 KB01 3J023 EA03 FA01 GA01 4F211 AD03 AD05 AD15 AD24 AH33 TA01 TC13 TC14 TD11 TH18 TN08 TTN13

Claims (2)

[Claims] 1. An actuator case comprising: a case having a flange formed on an outer periphery thereof; and a cover coupled to the case, wherein the flange of the case is formed in a concave shape over substantially the entire circumference. A case-side welding member housing portion and a current-carrying portion housing portion connected to the case-side welding member housing portion are formed, and the cover is substantially opposed to the case-side welding member housing portion of the case. A cover-side welding member accommodating portion formed in a concave shape over the entire circumference is formed, and is disposed between the case-side welding member accommodating portion of the case and the cover-side welding member accommodating portion of the cover. A welding member capable of joining the case-side welding member accommodating portion and the cover-side welding member accommodating portion by energizing the current-carrying portion and generating heat; Energization of is arranged to protrude from said conduction unit accommodating portion when the energization is performed, when the energization is terminated,
An actuator case, wherein the actuator case is cut at a position where it can be housed in the current-carrying unit housing. 2. The actuator case according to claim 1, wherein the enclosing member is sealed in the energizing portion housing after the energizing portion of the welding member is cut.