JPS58501351A - Solenoid with spring biased pneumatic link - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Field of solenoid technology with spring-biased pneumatic link The present invention relates to electrically actuated solenoids, particularly those adapted to be connected to a load. The present invention relates to a solenoid having a plunger having a spring-biased pneumatic link.

Background technology In this field, there are many types of electromagnetically actuated solenoids. It has been known. Many solenoids that generate power are located inside an electrically energized coil. It is of the type with a plunger arranged and movable in a linear direction. This program The plunger is usually actuated by a mechanical connection that moves the plunger out of the coil. is coupled to the load that is applied. When the coil is energized using a DC power source, the plan A magnetic field is generated around the plunger, which directs the plunger in the direction of the coil. the load, thereby displacing the load.

Some types of prior art solenoids use two types of coils. . One of the coils is of the type with low resistance, and is 1 Ω stronger than the plunger. It is specially designed to generate a magnetic field that applies an initial tension force. The other coil is , which have a large resistance, generate a relatively small tensile force, and are After the plunger has displaced the load, it simply acts to hold the plunger in its working position. use

The above types of solenoids are typically used for engine throttles, chokes, valves, Activating clutches and other devices that require linear stroke used for. In some of these applications, due to starting friction, etc., the solenoid is with a load that exhibits a relatively large initial resistance. These solenoids have their basic Due to its unique design, only minimal tension is exerted when the sylanger is fully extended. Don't let it live. − This is due to the fact that when the syranger is fully extended, the coil The magnetic field generated by the magnetic force has almost no effect on the plunger, which is attracted by the magnetic force. It is.

The above results in a sufficient tensile force at the beginning of the backward stroke, thereby You may rely on a dog, double coil, or oversized solenoid to "unleash" the load. It was necessary until now. Solenoids using double fill or oversized single coils is a simple single coil designed to meet minimum tensile force requirements for specific applications. Due to complexity and size reasons, it is difficult to manufacture compared to standard solenoids. Obviously it will be more expensive.

Disclosure of invention The present invention has the net effect of increasing the initial tensile force applied to the load, thereby Spring-biased pneumatic links for loads that allow minimum capacity coils to be used for specific applications. The disadvantages of the prior art are overcome by providing a plunger with a lock connection.

In more detail, this solenoid

a single electrically excitable coil within the casing and within an opening of the coil; It includes an elongated slidable plunger body. The siransha assembly is elongated The book is adapted to be coupled to a main body and a load and to slide relative to the main body. Contains a pneumatic link attached to one end of the body. provided between the link and the plunger body. The spring typically biases the body toward the link, which typically causes the link to Maintaining the plunger bodies in a retracted working relationship with respect to each other. Abnormally large due to load If there is no starting resistance, the plunger body and link will be fully pulled out of the sylansha assembly. During tension and return strokes, the planar The jaw body does not move relative to the link or load. This link is for the plunger book The image is created by a piston-like member slidably confined within a hole in one end of the body. will be accomplished. If the load imposes an abnormally high starting resistance on the solenoid, the link , the link ρ・et al. (therefore, the load D・et al. ) Move the plunger body into the coil. Special plan for inside the coil g58-5 01351(3) This partial displacement of the plunger body is applied to the plunger body by the coil. Increase the impact and therefore.

The magnitude of the tensile force generated by the plunger means that the solenoid can apply a considerable tensile force to the load. It increases considerably prior to addition. The syranger body is fully extended against the link. The link then bottoms out and the maximum tension is applied by the solenoid against the load. This overcomes the starting resistance of the load. Depending on the momentum of the plunger, The added balancer helps relieve some stuck loads.

As the blanker continues its pulling stroke, the spring connects and plans Returns the plunger bodies to their normal retracted relationship with respect to each other, thereby assembling the plunger. Reset the solid for the next pulling stroke.

Brief description of the drawing Figure 1 shows the link and plunger body in their normal retracted relationship with respect to each other. Parts have been cut away to show the plunger assembly in the fully extended starting position.

An open elevation view of a solenoid forming a preferred embodiment of the invention; FIG. Section showing the silancia assembly partially retracted during the tension stroke with the A diagram similar to Figure 1, Figure 3 shows the silansha assembly in the fully retracted position at the end of the tension stroke. 3D, with the link and plunger body returned to a retracted relationship with respect to each other. Figures similar to Figures 1 and 2; Figure 4 shows a portion of the syringe assembly and the solenoids shown in Figures 1 through 6. An elevational view of one end of the plunger assembly, and FIG. The tensile force of an oversized single coil type solenoid comparable to that of the prior art as a function of 3 is a graph showing the magnitude of the tensile force produced by the solenoid of the present invention in comparison with the solenoid of the present invention.

The best form of implementation of d] Referring to the drawings, a solenoid, designated generally by the number 10, is connected by a connecting rod 11. Activating various types of loads (not shown) connected to solenoid 10 Being given a stroke. The solenoid 10 is a DC type, and It has a pair of terminals 17 suitable for connection to a power source.

Solenoid 10 includes an outer cylindrical housing 12 having an opening 22 at one end. nothing. A single coil 14 of the usual type or a gooseong 12 is provided within which a cylindrical It has a shaped opening 24. Plunger assembly 16 is slidable within opening 24 and extends into the casing 12 through the opening 22. silane The shaft assembly 16 comprises a cylindrical body 1 of the magnetic phase family with a cylindrical cavity 20 at the outer end. Contains 8. An annular concave rim 44 is secured to the periphery of the body 18 near the cavity 20. ing. The holder 38, which has a ring shape and extends radially, is fixed to the sill 44 by welding or the like. and defines a generally circular opening 26 at the end of body 18 . Link member 28 slides in a direction coaxial with the longitudinal axis of both body 18 and solenoid 10. It is slidably confined within the cavity 20 so as to Link member 28 and The retainer 38 moves axially relative to the connecting rod 11 and the syringe body 18. Forms a pneumatic link that makes it possible to

The link member 28 includes a cylindrical portion 30 and a ring-shaped seat portion 32. the link member is located about and radially spaced from the tubular portion 300; An annular groove or passageway 34 is formed in 28. The cylindrical portion 30 is connected to the opening 26 of the main body 18. extending outwardly through the seat portion 32, while the outer end of the seat portion 32 is normally spaced apart from the retainer 38. (If there is no abnormally large starting resistance due to a load), a free moving clearance space 40 is defined. Ru. The clearance space 40 prevents free movement of the link member 28 with respect to the plunger body 18, i.e. Define the degree of axial position displacement. The same type of bias as the helical compression spring 36 The chewing device is fitted into the tubular portion 30 and mounted between the link member 28 and the retainer 38. It is housed in an annular recess 34 so that it can be rotated. The cylindrical portion 30 and the connecting rod 11 It has a longitudinally extending threaded hole 42 located in its center for screw engagement. Ru. An anti-rotation guide defined by a flat portion 46 is provided along the edge of the retainer 38. It is rare. The tubular portion 30 extends from the coil 14 with the plunger assembly 16. and a longitudinally extending chamfer or portion 48 leaving the flat portion 46 .

Industrial applicability As mentioned above, the solenoid 1o has a linear tension stroke to move the load. Suitable for use in operating a variety of mechanical devices requiring arcs.

A suitable DC power supply is connected to terminal 11, and solenoid 10 is turned negative by a suitable device. Installed near the load. Connecting rod 11 is screwed into hole 42 of link 28 This connects the syringe assembly 16 to the load. Energize solenoid 10 Prior to magnetization, the sylansha assembly 16 is in the fully extended position shown in FIG. In the position , the spring 36 swings toward the link member 28 that engages the end wall 41 . It is biased toward the lanyard main body 18, thereby creating a clearance space 4o.

The load is applied by first moving the plunger assembly 16 to the fully extended position shown in FIG. It typically includes a mechanical or hydraulic linkage coupled to a connecting rod 11 that is connected.

When the solenoid 10 is first energized, the magnetic field generated by the coil 14 is a plunger. A suction pulling force is applied to the main body 18, and this force causes the silansha main body 18 to move in the direction indicated by the arrow 43. move back in the direction. However, since the plunger assembly is fully extended, the body 18 is not directly affected by the magnetic field produced by coil 14. This conclusion As a result, when the silancia assembly 16 begins its backward stroke, the minimum tensile force is applied. A stiffness is applied to the load by the solenoid 10.

Under normal conditions where the load does not create abnormally large resistance due to starting friction, etc. The minimum force produced by solenoid 10 is slightly greater than the force required to pull the load. A spring 36 is selected that has a spring preload that is less than the limit tension force.

Now, assuming that the extra weight does not apply an abnormally large resistance to the solenoid 10, The plunger body 18 immediately begins to retreat into the coil 14 upon excitation of the coil. . The force of spring 36 pushing link member 28 toward end wall 41 pulls the load. , the link member 28 remains in contact with the end wall 41 and the coil The tensile force generated by the rod 14 is immediately transmitted to the connecting rod 11 by means of the live link.

The link member 28 and the plunger body 18 are under tension in this ideal loaded condition. are in a retracted relationship with respect to each other throughout the upstroke and return stroke.

However, if the load initially encounters resistance or is stuck due to starting friction, etc. , solenoid 1o operates as follows. When the coil 14 is energized, the plani The camera body 18 begins to retreat. At this point, the coil adds to the silansha main body 18. The force exerted is less than the force required to ``unleash'' the load. Despite this, The tensile force applied to plunger body 18 overcomes the compressive force created by spring 36. Therefore, the sylanger body 18 is retracted under the influence of the coil 14. the As a result, the spring 36 is compressed, which causes the silanger body 1B to move toward the coil 14. while the link member 28 and the connecting rod 11 remain stationary. Plansha The main body 18 has an outer end of the seat portion 32 engaged with the retainer 38 as shown in FIG. Until it hits, the stationary link member 28 is moved by a distance corresponding to the clearance space 401. keep retreating. At this point, the coil 14 applies to the silanger body 18 A considerable tensile force is transmitted through the link member 28 to the load via the connecting rod 11. Ru. At this point in the pulling stroke when link member 28 engages retainer 38 The magnitude of the generated tensile force is determined by the plan when the silansha main body 18 is partially retracted. Most of the jacket body 18 is directly magnetically influenced by the coil 14. It is recognized that the tensile force generated when the plunger body first begins to retreat is much larger. Let's get bored. This increased tensile force transmitted to the load is due to the abnormality caused by the load. larger than enough to overcome large resistances, so that the load is 'unleashed'. Re”.

It is displaced as the shiransha main body 18 continues to move.

Furthermore, the shock applied to the load as a result of the momentum of the syranger body help release.

As soon as the abnormally large resistance caused by the load is overcome, the spring 36 is thereby The resulting compressive force exceeds the force required to pull the load under normal conditions, as described above. The link member 28 is then returned to its normal retracted position where it engages the end wall 41. let The link member 28 is.

before the syringe body completes its pulling stroke as shown in Figure 3. It returns to its normal position where it engages the section wall 41. Link member 28 and plan The plunger body 18 extends the plunger body 18 of the plunger 1 plunger assembly 16 to the fully extended position shown in FIG. During the return stroke, this regressive relationship with respect to each other is reached, and then an abnormally large It remains in this relationship until acted upon during a tension stroke by a load resistance.

The improved performance customization provided by Solenoid 10 replaces conventional technology for the same load. The performance characteristics of a typical oversized solenoid are shown graphically in FIG.

In Figure 5, a high change on the vertical axis indicates an increased tensile force when applied to a load, and a horizontal axis indicates an increased tensile force. The decreasing value of is calculated from the fully extended position to the retracted position during the pulling stroke. The magnitude of the displacement of the jar body 18 is shown. The curve indicated by the number 50 is one of the present invention. The performance of solenoid 10 is shown, and curve 52 shows the performance of a prior art solenoid. .

Dotted line 57 indicates the minimum resistance the load has to its displacement after overcoming starting friction. indicates the minimum force required to pull a load under normal conditions that would result in .

The curved portion 50b represents the force exerted by the spring 36 (i.e.

The curved portion 50a shows the coil after the link member 28 hits the bottom. 14 indicates the force exerted on the load. Spring 36 is negative in normal resistance condition. Since it is necessary to generate sufficient force to pull the load, the lowest point of the curved portion 50b 50C must be slightly above D. which intersects line 57. curved part 5 0b while the link member 28 is at rest, thereby loading the spring 36. This corresponds to the part of the tension seat loaf where the plunger body retreats. In other words, the song The displacement of the silansha main body 18 below the line portion 50b is.

It is equal to the clearance space 40.

When the link member 28 hits the holder 38 at the point 50d, the coil 14 The resulting force is transferred to the load. At point 50d, plunger assembly 16 The amount of force applied to the load from is the maximum force required to pull the load under normal resistance conditions. It turns out that it is more than 10 times the size of the small one. This considerable force is caused by the load. substantially greater than sufficient to overcome the abnormal starting resistance that may occur. What is the magnitude of the force mentioned above?

To some extent 1 the physical properties of the selected spring 36 and the spring 36 during actuation of the plunger. It depends on the distance compressed into.

In contrast, prior art solenoids produce a minimal The force (if its plunger is fully extended) is the starting resistance caused by the load. Define the maximum force available to overcome the This is only about twice the minimum force required to pull a load. therefore, The solenoid 10 of the present invention overcomes starting friction compared to prior art solenoids. It is easily recognized that the force applied to the load is five times or more.

A typical application of the solenoid 10 of the present invention is the actuation of a butterfly valve (not shown). , in which case the valve plate carried by the shirt which can be rotated once is moved towards the closed position. Spring biased. The solenoid of the present invention is generally 1.

A lock adapted to mate with the rotatable valve stem extension to prevent valve closure. It is equipped with a door member. The solenoid is activated by moving the rod from the valve stem extension. the solenoid as described above, which will cause the spring-loaded valve to close. In applications, the rod holding the solenoid is in frictional engagement with an extension of the shaft. .

Therefore, a relatively large tensile force is initially applied to the rod to overcome the starting friction. It is necessary to use the

This initial increased pulling force is provided by the solenoid of the present invention as described above. It will be done.

Other aspects, objects, and advantages of the invention may be learned from a study of the drawings, disclosure, and claims. It can be understood by doing.

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Claims (1)

[Claims] 1. electrically energizable coil (14) and load (11) K to be coupled a magnetically attracted syranger (18); is responsive to actuation of said coil (14) to adjust the first position of the load and the associated plunger. movable between a first position and a second position of the load and an associated second position of the plunger; In a certain solenoid, the plunger (18) and the load (11) connection, and while the load (11) is stationary, release the plunger and move it forward. the first position #h of the plunger and the second position 1 of the plunger; link device (20, 213, 32° 38.40), and the pneumatic link device (2 o. 28.32, 38.40) is the first device n of the plunger (18). The load (11) is moved to the second position of the load in response to the movement to the second position. - A solenoid characterized by having a biasing device (36) for biasing the solenoid. 2. The sylanger (18) has an opening (24) at one end thereof, and the air-moving link device (20, 2B. 32.38.40) is slidably arranged within said opening (24). The i+] link member (28) is held in the link member (28) and the opening (24). Solenoid according to claim 1, characterized in that it comprises a device (38) for holding Do. 6. The biasing device (36) is retained within the opening (24), and the biasing device (36) is a spring (36) extending between the link member (28) and the retaining device (38); The solenoid according to claim 2, characterized in that: 4. The opening (24) has a cylindrical shape, and the holding device (38) an annular element (38) fixed to the plunger (18) and having an n-hole (26); The link member (2nd) passes through the hole and connects to the pneumatic link 1 device (20, 28). , 32, 38, 40) to the second position. The solenoid according to clause 6. 5. The link member (28) is sheathed and fitted with a spring (36), and A cylindrical portion (30) adapted to be laminated with a load (11) and the cylindrical portion (30) a seat portion defining a recess (34) radially spaced from and in which said spring is disposed; (32) The solenoid according to claim 3, characterized in that it includes (32). 6. The plunger (18) and the cylindrical portion (30) each have a cylindrical shape. Claim 5, wherein the cylindrical portion has a screw hole (42). The solenoid described in . Z At least a portion (32) of the link member (28) is attached to the retaining device (38). [Claim No. 1, characterized in that The solenoid according to item 2. 8. The biasing device f (36) moves toward the second position of the load mentioned above. (11) is sufficient to draw and immerse the syringe in the coil (14). Spring (36) with a straight spring constant less than the minimum force exerted on (18) A solenoid according to claim 1, characterized in that it comprises: 9. Generally inhibiting rotational movement of the link member (28) with respect to the plunger. A solenoid according to claim A2, characterized in that the solenoid comprises a device (46, 48). 0 10 Casing (12), located inside the casing (12) and opening inside an electrically energizable coil (14) with a portion (24) and a load (11); an extended position in which the load (11) is in a standby state; The coil (14) is moved between the retracted positions in which the load (11) is pulled to the actuated position. 4 through the opening (24) and moving within the casing (12). A type of solenoid with a magnetically attracted planter (18) capable of the coil is coupled between the plunger (18) and the load (11); (14) is movable from the first position to the second position when the load is energized. (11) moves the syranger (18) to the extended position while in the standby state. a pneumatic linkage device that moves a preselected distance from ρ) toward the retracted position; (20,28・32.38.40), and the air link device (20,28, 32, 3B, 40) from the second position [Direct ρ・ to the first position. A solenoid comprising a biasing device (36). 11, the plunger (18) has an opening (24) at one end thereof, and the plunger (18) has an opening (24) at one end thereof; A dynamic linkage (20° 28.32, 38.40) slides into the opening (24). a link member (28) disposed such that the link member (28) and the link member (28) are Claim 10, further comprising a device (38) for holding the lock member. mounted solenoid. 12, said opening (24) is formed by an end wall (41) in said plunger (18); partially formed and said link device (20, 213, 32, 38, 40) In response to movement in a first position, the link portion (t(28)) seats on the end wall. The solenoid according to claim 11, characterized in that: