Push switch base of optical encoder

Abstract

The invention discloses a push switch seat of an optical encoder. The push switch seat comprises a switch contact component and a switch metal dome above the switch contact component. The switch contact component is provided with a switch contact seat, a switch movable contact and a switch static contact. The switch metal dome abuts against the switch static contact, when the switch metal dome is pressed downwards, the middle portion of the switch metal dome gradually sinks downwards until the switch metal dome abuts against the switch movable contact, and at the moment, the switch movable contact and the switch static contact are conducted through the switch metal dome. The push switch has the beneficial effects that the switch metal dome is used as a mechanism for providing force and displacement in the push switch seat, and the push switch has the characteristics of reliability and long service life.

Description

Technical Field

[0001] The invention relates to an optical encoder, in particular to an optical encoder push switch seat. Background Art

[0002] An optical encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities through photoelectric conversion. It is currently the most widely used sensor. In the civilian field, it is mainly used in computers, radios, global positioning systems, televisions, game systems and other equipment. In the military field, it is widely used in aircraft, ships, weapons, individual equipment and other systems.

[0003] The existing optical encoders with push switch function mostly directly use a micro switch structure or a button switch structure for the push switch seat, which is large in size and has a long push life that is greatly restricted by the life of the micro switch or the button switch, and cannot meet the growing push life requirements. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a novel optical encoder push switch seat.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a technical solution: a push switch seat of an optical encoder, comprising: a switch contact component and a switch pot piece above the switch contact component; the switch contact component has a switch contact seat, a switch moving contact and a switch static contact; the switch pot piece abuts against the switch static contact, and the switch pot piece is pressed downward, and the middle part of the switch pot piece gradually sinks downward until it abuts against the switch moving contact, at which time the switch moving contact and the switch static contact are connected through the switch pot piece.

[0006] As a preferred solution of the push switch seat of the optical encoder, the switch contact seat has a contact seat accommodating groove, the bottom surface of the contact seat accommodating groove has a groove moving contact positioning hole and a groove static contact positioning hole, and the peripheral surface of the contact seat groove has a groove moving contact through hole and a groove static contact through hole; the switch moving contact is placed on the bottom surface of the contact seat accommodating groove, the switch moving contact has a moving contact main body and a moving contact extension, the moving contact main body has a main body positioning foot corresponding to the groove moving contact positioning hole, and the main body positioning foot enters downward into the groove moving contact positioning hole; the moving contact extension extends from the moving contact main body to the groove moving contact through hole, and the part of the moving contact extension passing through the groove moving contact through hole is bent to form one of the switch pins of the push switch seat; the switch static contact is placed on the bottom surface of the contact seat accommodating groove The switch static contact comprises a static contact body and a static contact extension, the static contact body surrounds the outside of the moving contact body, the static contact body has a body through hole corresponding to the groove static contact positioning hole, the static contact extension extends from the static contact body to the groove static contact through hole, the portion of the static contact extension passing through the groove static contact through hole is bent to form another switch pin of the push switch seat; the switch pot piece has a pot piece supporting foot, the pot piece supporting foot is supported on the static contact body, part of the pot piece supporting foot has a convex portion under the supporting foot, the convex portion under the supporting foot corresponds to the body through hole of the static contact body, and the convex portion under the supporting foot passes downward through the body through hole of the static contact body to enter the inside of the groove static contact positioning hole of the contact seat accommodating groove.

[0007] As a preferred solution of the push switch seat of the optical encoder, the main body of the movable contact is in a truncated cone shape.

[0008] As a preferred solution of the push switch seat of the optical encoder, the static contact body is in the shape of the English letter C, the static contact extension extends from one end of the static contact body, and the static contact extension is tangent to the static contact body.

[0009] As a preferred solution for the push switch seat of the optical encoder, there are four pot-shaped supporting feet, which are evenly arranged along the circumferential direction, wherein one group of relative pot-shaped supporting feet has a shorter extension length and arc-shaped ends, and another group of relative pot-shaped supporting feet has a longer extension length and trident-shaped ends, wherein the middle one of the tridents has a downwardly folded sharp corner, which is the lower convex part of the supporting feet.

[0010] As a preferred solution of the push switch seat of the optical encoder, the push switch seat structure further includes: a pot piece fixing ring above the switch pot piece, the pot piece fixing ring has a fixing ring positioning protrusion, the switch contact seat further has a contact seat positioning groove formed on the periphery of the contact seat accommodating groove and corresponding to the fixing ring positioning protrusion, the fixing ring positioning protrusion is inside the contact seat positioning groove, and the pot piece fixing ring is against the switch pot piece.

[0011] As a preferred solution for the push switch seat of the optical encoder, the pot fixing ring has a notch.

[0012] As a preferred solution for the push switch seat of the optical encoder, the number of the fixing ring positioning protrusions is 4, which are evenly arranged along the circumferential direction; preferably, the fixing ring positioning protrusions and the contact seat positioning grooves are petal-shaped.

[0013] Compared with the prior art, the beneficial effects of the present invention are at least as follows: 1. The switch pot piece is used as a mechanism for providing force and displacement in the push switch seat, which has the characteristics of reliability and long life. 2. The switch contact component, the switch pot piece and the pot piece fixing ring are integrated together, which greatly reduces the overall volume of the push switch seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention (assembled state).

[0015] Figure 2 It is a schematic diagram of the structure of the present invention (decomposed state).

[0016] Figure 3 It is a schematic diagram of the structure of the switch contact component in the present invention.

[0017] Figure 4 It is a schematic diagram of the structure of the static contact of the switch in the present invention.

[0018] Figure 5 It is a structural schematic diagram of the movable contact of the switch in the present invention. Implementation

[0019] The present invention is further described in detail below by means of specific embodiments in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] See also Figure 1 and Figure 2, the figure shows a push switch seat of an optical encoder. The push switch seat is placed inside the optical encoder and cooperates with the push shaft of the optical encoder to realize the switch signal output of the optical encoder.

[0021] The push switch seat comprises: a switch contact component 1 and a switch pot piece 2.

[0022] The switch contact component 1 comprises a switch contact seat 11 , a switch movable contact 12 and a switch stationary contact 13 .

[0023] Recombination Figure 3 The switch contact seat 11 has a contact seat accommodating groove 111. The bottom surface of the contact seat accommodating groove 111 has a groove moving contact positioning hole and a groove static contact positioning hole. The contact seat groove peripheral surface has a groove moving contact through hole and a groove static contact through hole.

[0024] Recombination Figure 4 , the switch moving contact 12 is placed on the bottom surface of the contact seat accommodating groove 111. The switch moving contact 12 has a moving contact main body 121 and a moving contact extension 122. The moving contact main body 121 has a main body positioning foot 1211 corresponding to the groove moving contact positioning hole. The main body positioning foot 1211 goes downward into the groove moving contact positioning hole to realize the positioning of the moving contact main body 121 inside the contact seat accommodating groove 111. The moving contact extension 122 is an integral structure with the moving contact main body 121. The moving contact extension 122 extends from the moving contact main body 121 to the groove moving contact through hole. The part of the moving contact extension 122 that passes through the groove moving contact through hole is bent to form one of the switch pins of the push switch seat.

[0025] In some embodiments, the movable contact body 121 is in a truncated cone shape.

[0026] In some embodiments, the number of the main body positioning feet 1211 is 3.

[0027] Recombination Figure 5, the switch static contact 13 is placed on the bottom surface of the contact seat accommodating groove 111. The switch static contact 13 has a static contact body 131 and a static contact extension 132. The static contact body 131 surrounds the outside of the moving contact body 121. The static contact body 131 has a body through hole 1311 corresponding to the static contact positioning hole of the groove. The static contact extension 132 and the static contact body 131 are an integral structure. The static contact extension 132 extends from the static contact body 131 to the static contact through hole of the groove. The portion of the static contact extension 132 that passes through the static contact through hole of the groove is bent to form another switch pin of the push switch seat.

[0028] In some embodiments, the static contact body 131 is in the shape of the English letter C. Further, the static contact extension 132 extends from one end of the static contact body 131 and is tangent to the static contact body 131 to save space.

[0029] The switch pot piece 2 is inside the contact seat accommodating groove 111 and is located above the switch contact component 1. The switch pot piece 2 has a pot piece support foot 21. The pot piece support foot 21 is supported on the static contact body 131. Some of the pot piece support feet 21 have a lower convex portion 211 under the support foot. The convex portion 211 under the support foot corresponds to the main body through hole 1311 of the static contact body 131. The convex portion 211 under the support foot passes downward through the main body through hole 1311 of the static contact body 131 and enters the inside of the groove static contact positioning hole of the contact seat accommodating groove 111, thereby realizing the positioning of the switch pot piece 2 and the static contact body 131 inside the contact seat accommodating groove 111.

[0030] In some embodiments, there are four pot support legs 21, which are evenly arranged along the circumferential direction. One set of the pot support legs 21 relative to each other has a shorter extension length and an arc-shaped end. Another set of the pot support legs 21 relative to each other has a longer extension length and a trident-shaped end, wherein the middle trident has a downwardly folded sharp corner, i.e., the lower convex portion 211 of the support leg.

[0031] The switch pot piece 2 is pressed downward, and the middle part of the switch pot piece 2 gradually sinks downward until it contacts the moving contact body 121. Since the pot piece support foot 21 of the switch pot piece 2 is always connected to the static contact body 131, the switch moving contact 12 and the switch static contact 13 are connected through the switch pot piece 2, thus realizing the press switch seat passage.

[0032] Preferably, the push switch seat structure further includes: a pot fixing ring 3 above the switch pot 2. The pot fixing ring 3 has a fixing ring positioning protrusion 31. The switch contact seat 11 further has a contact seat positioning groove 112 formed on the periphery of the contact seat accommodating groove 111 and corresponding to the fixing ring positioning protrusion 31. The fixing ring positioning protrusion 31 is inside the contact seat positioning groove 112 to achieve the positioning of the pot fixing ring 3 in the switch contact seat 11. The pot fixing ring 3 abuts against the switch pot 2 to further position the switch pot 2.

[0033] In some embodiments, the number of the fixing ring positioning protrusions 31 is 4 and they are evenly arranged along the circumferential direction. Preferably, the fixing ring positioning protrusions 31 and the contact seat positioning grooves 112 are in a petal shape.

[0034] In some embodiments, the pot piece fixing ring 3 has a notch. By compressing the notch, the diameter of the pot piece fixing ring 3 can be reduced.

[0035] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A push switch seat for an optical encoder, characterized in that: include: A switch contact component and a switch pot piece above the switch contact component; The switch contact component comprises a switch contact seat, a switch moving contact and a switch static contact; The switch pot piece abuts against the switch static contact, and the switch pot piece is pressed downward, so that the middle part of the switch pot piece gradually sinks downward until it abuts against the switch moving contact. At this time, the switch moving contact and the switch static contact are connected through the switch pot piece.

2. The push switch base of the optical encoder according to claim 1, characterized in that: The switch contact seat has a contact seat accommodating groove, the bottom surface of the contact seat accommodating groove has a groove moving contact positioning hole and a groove static contact positioning hole, and the peripheral surface of the contact seat groove has a groove moving contact through hole and a groove static contact through hole; the switch moving contact is placed on the bottom surface of the contact seat accommodating groove, the switch moving contact has a moving contact main body and a moving contact extension, the moving contact main body has a main body positioning foot corresponding to the groove moving contact positioning hole, and the main body positioning foot enters downward into the groove moving contact positioning hole; The moving contact extension portion extends from the moving contact main body portion to the moving contact through hole of the groove, and the portion of the moving contact extension portion passing through the moving contact through hole of the groove is bent to form one of the switch pins of the push switch seat; the switch static contact is placed on the bottom surface of the contact seat accommodating groove, and the switch static contact has a static contact main body portion and a static contact extension portion, the static contact main body portion surrounds the outside of the moving contact main body portion, the static contact main body portion has a main body through hole corresponding to the static contact positioning hole of the groove, and the static contact extension portion extends from the static contact main body portion to the moving contact through hole of the groove. The groove static contact extends through the hole, and the part of the static contact extension part passing through the groove static contact through the hole is bent to form another switch pin of the push switch seat; the switch pot piece has a pot piece supporting foot, and the pot piece supporting foot is supported on the static contact main body, and part of the pot piece supporting foot has a convex part under the supporting foot, and the convex part under the supporting foot corresponds to the main body through hole of the static contact main body, and the convex part under the supporting foot passes downward through the main body through hole of the static contact main body to enter the groove static contact positioning hole of the contact seat accommodating groove.

3. The push switch base of the optical encoder according to claim 2, characterized in that: The movable contact body is in a truncated cone shape.

4. The push switch base of the optical encoder according to claim 2, characterized in that: The static contact main body is in the shape of the English letter C, the static contact extension portion extends from one end of the static contact main body portion, and the static contact extension portion is tangent to the static contact main body portion.

5. The push switch base of the optical encoder according to claim 2, characterized in that: There are four pot-piece supporting feet, which are evenly arranged along the circumferential direction, wherein one group of opposite pot-piece supporting feet has a shorter extension length and an arc-shaped end, and another group of opposite pot-piece supporting feet has a longer extension length and a trident-shaped end, wherein the middle trident has a downwardly folded sharp corner, which is the lower convex part of the supporting feet.

6. The push switch base of the optical encoder according to any one of claims 1 to 5, characterized in that: The push switch seat structure further includes: a pot piece fixing ring above the switch pot piece, the pot piece fixing ring has a fixing ring positioning protrusion, the switch contact seat further has a contact seat positioning groove formed on the periphery of the contact seat accommodating groove and corresponding to the fixing ring positioning protrusion, the fixing ring positioning protrusion is inside the contact seat positioning groove, and the pot piece fixing ring abuts against the switch pot piece.

7. The push switch base of the optical encoder according to claim 6, characterized in that: The pot piece fixing ring has a notch.

8. The push switch base of the optical encoder according to claim 6, characterized in that: The number of the fixing ring positioning protrusions is 4 and they are evenly arranged along the circumferential direction; preferably, the fixing ring positioning protrusions and the contact seat positioning grooves are in a petal shape.

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