JP2514166Y2 - Electromagnetic solenoid - Google Patents

Description

[Detailed description of the device] [The purpose of the device]

(Field of industrial application) The present invention relates to an electromagnetic solenoid used for opening and closing various doors and door locks of automobiles. (Prior Art) Conventionally, as an electromagnetic solenoid used for opening and closing various doors and doors of automobiles, there is one shown in FIG. 3, for example. The electromagnetic solenoid 100 shown in the figure has a cylindrical portion 102 for inserting a plunger approximately at the center of a bobbin 102 provided in an exciting coil 101.
a is provided, one end of the lead wire 101a wound around the bobbin 102 is connected to the power supply 104 via the switch 103,
The other end of the lead wire 101a is connected to the ground. Further, the bobbin 102 is provided with a top wall 102b and a bottom wall 102c on the upper side and the lower side in FIG. 3, respectively.
The end surfaces 102d and 102e of the bottom wall 102c are flat. The frame 105 is in contact with the top wall 102b and the bottom wall 102c. The frame 105 is composed of a lower frame 105a having a substantially U-shaped longitudinal section and an upper frame 105b fixed to the lower frame 105a. Both the lower frame 105a and the upper frame 105b are made of a magnetic material. In the lower frame 105a, a plunger insertion hole 105d is formed at the center of the bottom 105c that is brought into contact with the bottom wall 102c of the bobbin 102.
Is provided, and the rising pieces are placed on both sides of the bottom 105c.
105e, 105f are provided respectively, these rising pieces 105e,
Near the tip of 105f, upper frame fixing projections 105i projecting upward in FIG. 2 from end edges 105g and 105h,
105j is prepared for each. The upper frame 105b has a spring accommodating portion 105k for accommodating the return spring and a circular hole 105l at a position corresponding to the plunger insertion hole 102a provided in the bobbin 102 at substantially the center, and both sides of the spring accommodating portion 105k are provided. Insertion holes 105p and 105q for inserting the upper frame fixing protrusions 105i and 105j provided in the lower frame 105a are provided in each of these. On the other hand, the bobbin 102 is provided with a plunger insertion tube portion 102.
A plunger 106 made of a magnetic material is inserted in a, and a return spring 107 stored in a spring storage portion 105k provided in the upper frame 105b is provided at an end of a plunger body 106a provided in the plunger 106. Are in contact. The plunger body 106a is connected to a shaft portion 106b which is inserted through the inside of the return spring 107, and the output member 106c is fixed to an outer portion of the shaft portion 106b which is inserted through a round hole 105l provided in an upper frame 105b. There is. Then, while inserting the upper frame fixing projections 105i and 105j provided in the lower frame 105a into the insertion holes 105p and 105q provided in the upper frame 105b, the upper frame is fixed.
Bobbin bottom 105c for 105b and lower frame 105a
Upper wall 102b and bottom wall 102c of 102 are respectively brought into contact with each other, and the upper frame fixing projections 105i, 105j of the upper frame 105b are protruded upward in FIG.
The exciting coil 101 is supported by the upper frame 105b and the lower frame 105a by bending and tightening to the upper frame 105b side. In the returning state shown in FIG. 3, the plunger 106
Is urged downward in the figure by the elastic repulsive force of the return spring 107, and when the power supply 104 is connected to the exciting coil 101 by turning on the switch 103 from this state, the exciting coil 101 is excited. , Plunger 106, upper frame 105b, lower frame 105a rising piece 10
A magnetic flux Φ passing through 5e and 105f, the bottom 105c of the lower frame 105a, and the plunger 106 is generated, so that the plunger 106 is attracted and moved upward in the figure against the elastic repulsive force of the return spring 107. When the plunger 106 is suction-moved upward in the drawing, the output member 106c is output-moved upward together with the plunger 106, so that a load such as a door lock connected to the output member 106c is operated. Then, when the switch 103 is turned off from this state, the exciting coil 101 is demagnetized, so that the plunger 1
06 is no longer attracted, and the plunger 106 returns and moves downward in the figure by the elastic restoring force of the return spring 107, and returns to the state shown in FIG. (Problems to be solved by the invention) However, in the above-described conventional electromagnetic solenoid 100, the ceiling wall of the bobbin 102 provided on the exciting coil 101 supported by the upper frame 105b and the lower frame 105a.
Since both 102b and the bottom wall 102c are flat on the upper frame 105b side and the lower frame 105a side, the upper frame 105b is caulked by the upper frame fixing protrusions 105i and 105j provided in the lower frame 105a. It is hard to say that there is no gap between the bobbin 102 and each of the frames 105b and 105a. If there is a gap, the exciting coil 101 may shift with respect to each of the frames 105b and 105a. However, there is a problem in that there is a possibility that it may cause malfunction and malfunction, and it has been an issue to solve this problem. (Object of the Invention) Therefore, the present invention has been made in view of the above-mentioned conventional problems, and by assembling the exciting coil so as not to be displaced from the frame without providing protrusions or holes in the frame, It is an object of the present invention to provide an electromagnetic solenoid that can operate. (Means for Solving the Problem) In the electromagnetic solenoid according to the present invention, a plunger having a plunger shaft, a plunger insertion cylinder part through which the plunger is inserted, and a plunger insertion cylinder part of the plunger insertion cylinder part are provided. A magnetic material comprising a bobbin having a top wall and a bottom wall, which are respectively coupled to both ends, an exciting coil wound around the bobbin, a pair of rising pieces and a bottom connecting the rising pieces, has a cross section of approximately U. The lower frame is formed in a V shape and has a plunger insertion hole through which the plunger is inserted, and the lower wall against which the bottom wall of the bobbin abuts, and a substantially flat magnetic material. Of the upper frame with a hole through which the plunger shaft of In the electromagnetic solenoid that is abutted against the upper end of the bobbin, a pair of rising pieces of the lower frame and the upper frame are fastened to each other by a return spring that applies a biasing force to the plunger. , A plurality of support protrusions are formed facing the upper frame, and in a state where the plurality of support protrusions are in contact with the upper frame, the upper frame and the lower frame are swaged to each other, and the plurality of support protrusions are slightly crushed. In this state, the bobbin is supported by the upper frame and the lower frame. (Effect of the Invention) In the electromagnetic solenoid according to the present invention, the upper frame and the lower frame are arranged so that the upper frame and the lower frame are in contact with each other while the plurality of supporting protrusions formed on the top wall of the bobbin are in contact with the upper frame. Since the bobbin is supported by the upper frame and the lower frame in a state where it is crimped and the plurality of support protrusions are slightly crushed,
The slightly crushed support projections give a reaction force to the upper frame to firmly support it. Therefore, there is an effect that a gap is less likely to be formed between the bobbin and the frame without forming a recess or a hole into which the plurality of protrusions are inserted in the upper frame. (Embodiment) An embodiment of an electromagnetic solenoid according to the present invention will be described below with reference to FIGS. 1 and 2. The electromagnetic solenoid 1 shown in the drawing is provided with a bobbin 4 made of a synthetic resin in which a lead wire 3 is wound around an exciting coil 2, and a bobbin 4 is provided with a plunger insertion tubular portion 4a at substantially the center thereof. . Further, the bobbin 4 has a ceiling wall 4b on the upper side in FIG.
However, bottom walls 4c are provided on the lower side, respectively, and on the top wall 4b, at four locations on the outer peripheral side of the cylinder portion 4a for inserting a plunger, there are columnar support protrusions slightly protruding upward in the figure. 4d, 4d,
4d and 4d are provided respectively. Upper frame provided on frame 5 for supporting protrusion 4d
The lower frame 5b provided on the frame 5 is brought into contact with the bottom wall 4c. The lower frame 5b provided in the frame 5 is made of a magnetic material and has a substantially U-shaped vertical cross section, and the upper frame 5a provided in the frame 5 is made of a magnetic material and has a flat plate shape. The lower frame 5b is provided with a bottom 5c which is brought into contact with the bottom wall 4c of the bobbin 4, and the bottom 5c is provided substantially at the center thereof.
Plunger insertion holes 5d are provided, and a pair of rising pieces 5e, 5f, which are long on the upper frame 5a side in FIG. 1 are provided on both sides of the bottom 5c. Then, near the tips of the rising pieces 5e and 5f, the edge 5g,
Upper frame supporting projections 5i and 5j projecting upward from 5h in FIG. 1 are provided respectively. The upper frame 5a has a spring accommodating portion 5k for accommodating a return spring and a round hole 5l at a position corresponding to the plunger insertion cylinder portion 4a provided on the bobbin 4 at the substantially center thereof. Insertion holes 5p and 5q into which the upper frame fixing protrusions 5i and 5j provided in the lower frame 5b are inserted are provided on both sides of the above. A plunger 6 made of a magnetic material is inserted into the plunger insertion cylinder portion 4a of the bobbin 4, and the upper frame is attached to the end of the cylindrical plunger body 6a of the plunger 6. Spring storage for 5a
The return spring 7 stored in 5k is in contact. A plunger shaft 6b, which is inserted through the inside of the return spring 7, is coupled to the plunger body 6a. An outer portion of the plunger shaft 6b is inserted through a round hole 51 provided in the upper frame 5a. The output member 6c is fixed to. And the insertion holes provided in the upper frame 5a with the upper frame fixing projections 5i and 5j provided in the lower frame 5b.
While inserting into 5p, 5q, upper frame 5a bobbin 4
In the state shown in FIG. 1 from the upper frame 5a in a state in which the support projections 4d, 4d, 4d, 4d provided on the lower end of the bobbin 4 are brought into contact with the bottom 5c provided on the lower frame 5b. In the upper frame fixing projection 5i protruding upward in
5j is bent to the upper frame 5a side and crimped. At this time, the upper frame fixing protrusions 5i, 5j are bent toward the upper frame 5a side and caulked, so that the upper frame 5a and the lower frame 5b abut, and at the same time, the supporting protrusions 4d, 4d, 4d, 4d is crushed slightly by the pressing force of the upper frame 5a, and the support protrusions 4d, 4d,
Since 4d and 4d give a reaction force to the upper frame 5a, the bobbin 4 is firmly supported by the upper frame 5a and the lower frame 5b without backlash. In the return state shown in FIG. 1, the plunger 6 is urged downward in the figure by the elastic repulsive force of the return spring 7, and from this state, the switch 8 connected in the same manner as in FIG. 3 is turned on. When the power source 9 is connected to the exciting coil 2 by switching, the exciting coil 9 is excited,
Plunger 6, upper frame 5a, lower frame
5b rising pieces 5e and 5f, lower frame 5b bottom
5c, a magnetic flux Φ passing through the plunger 6 is generated, and this magnetic flux Φ
As a result, the plunger 6 is attracted and moved upward in the figure against the elastic repulsive force of the return spring 7, so that the output member 6c is output-moved from the position A to the position B, and is connected to the output member 6c. Activate the load such as the lock. When the switch 8 is turned off from this state, the exciting coil 2 is demagnetized and the plunger 6 is no longer attracted, so that the plunger 6 moves back downward in the figure by the elastic restoring force of the return spring 7. As the output member 6c returns from the position B to the position A, the state shown in FIG. 1 is restored. During the suction movement and the return movement of the plunger 6, the excitation coil 2 is firmly supported between the upper frame 5a and the lower frame 5b by the support protrusions 4d, 4d, 4d, 4d, so that the bobbin 4 and each frame are supported. The plunger 6 operates reliably without a gap between the plungers 5a and 5b.

[Effect of device]

As described above, according to the electromagnetic solenoid according to the present invention, the upper frame and the lower frame are contacted with each other while the plurality of support protrusions formed on the top wall of the bobbin are in contact with the upper frame so as to face the upper frame. Since the bobbin is supported by the upper frame and the lower frame in a state where the frame and the frame are crimped to each other and the plurality of support protrusions are slightly crushed, the slightly crushed support protrusions give a reaction force to the upper frame. It is excellent in that it does not form a recess or hole into which a plurality of protrusions are inserted in the upper frame, so that a gap is less likely to occur between the bobbin and the frame, and a reliable operation can be performed. Produce an effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway side view of an embodiment of an electromagnetic solenoid according to the present invention, and FIG. 2 is an external perspective view around a bobbin in the electromagnetic solenoid shown in FIG. FIG. 3 is a partially cutaway side view of a conventional electromagnetic solenoid. 1 ... Electromagnetic solenoid 2 ... Exciting coil 4 ... Bobbin 4a ... Plunger insertion cylinder 4b ... Top wall 4c ... Bottom wall 4d ... Support protrusion 5 ... Frame 5a ... Upper frame 5b ... … Lower frame 5c …… Bottom 5d …… Plunger insertion hole 5e …… Rise piece 5f …… Rise piece 5l …… (hole) Round hole 6 …… Plunger 6b …… Plunger shaft 7 …… Return spring

Claims (1)

(57) [Scope of utility model registration request] 1. A plunger provided with a plunger shaft, a plunger insertion cylinder into which the plunger is inserted, and a top wall and a bottom wall which are respectively coupled to both ends of the plunger insertion cylinder. A bobbin having a magnet, an exciting coil wound around the bobbin, and a pair of rising pieces and a bottom connecting the rising pieces, the magnetic material having a substantially U-shaped cross section. A plunger insertion hole through which a jar is inserted is formed, and a lower frame with which the bottom wall of the bobbin abuts and a substantially flat magnetic material are inserted, and the plunger shaft of the plunger is inserted. A frame comprising an upper frame having a hole formed therein, and arranged around the plunger shaft of the plunger,
An electromagnetic solenoid that is in contact with the upper frame and that includes a return spring that applies an urging force to the plunger, and is joined to each other by swaging the pair of rising pieces of the lower frame and the upper frame. A plurality of support protrusions are formed on the top wall of the bobbin so as to face the upper frame, and the plurality of support protrusions are in contact with the upper frame. The solenoid is characterized in that the bobbin is supported by the upper frame and the lower frame in a state in which the supporting projections of 1. are slightly crushed.