Rotary switch
By setting the reinforcement layer and limit structure made of iron material on the positioning gear of the rotary switch, the problem of poor wear resistance of the rotary switch in the prior art is solved, the positioning accuracy and retention performance are improved, and the use is extended life.
Patent Information
- Application Number
- CN202423214557.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-12-25
AI Technical Summary
The wear resistance of the injection molded structure of the existing rotary switch is average and can easily wear after long-term use, resulting in a decrease in positioning accuracy and retention ability, affecting service life.
The reinforcement layer is provided on the positioning gear of the rotary switch. The reinforcement layer is composed of a reinforcement cover tightly placed on the positioning gear. The reinforcement cover is made of iron material, and a limit edge and limit groove are provided on its surface to improve resistance Torsion resistance.
By setting up a reinforcement layer, the wear resistance of the positioning gear is improved, wear prevention, positioning accuracy and retention performance are maintained, and the service life of the rotary switch is extended.
Smart Images
Figure CN222462703U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical switches, and more specifically to a rotary switch. Background Art
[0002] As a key component in the field of electrical control, the rotary switch has a long history of development. With the increasing functions of various mechanical equipment and electronic devices, the traditional simple on-off switch can no longer meet the complex operation requirements. Therefore, the rotary switch came into being. The existing rotary switch generally has its rotating central axis driving the internal moving contact to move, and the movement of the moving contact changes the on-off connection between the corresponding fixed contacts to achieve circuit switching.
[0003] In the prior art, the positioning of the rotation angle of the rotating center axis is related to whether the movement of the moving contact can be accurately positioned and maintained after rotation, so it is very important. Most of the existing rotating center axes adopt simple injection molding parts, which have a toothed structure or a grooved structure, and then cooperate with an elastic telescopic component to offset the toothed or grooved structure for positioning. However, the wear resistance of the injection molded structure is general. After long-term use, its surface is severely worn, and the contour shape of the toothed or grooved structure has errors, and the positioning accuracy and retention ability are greatly reduced, which greatly affects the service life of the rotary switch. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a rotary switch with a simple structure, good wear resistance, accurate and reliable positioning after long-term use, and a long service life.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary switch, comprising a shell, a rotating central axis and side sealing plates, the rotating central axis is rotatably arranged in the shell, the side sealing plates are fixedly installed on both sides of the shell, the rotating central axis is provided with a positioning gear, the side sealing plates are provided with a telescopic mechanism, the end of the telescopic mechanism is inserted into a recessed position on the positioning gear to constrain the rotation of the positioning gear, and the surface of the positioning gear includes a strengthening layer consistent with the contour of the positioning gear.
[0006] The utility model is further configured as follows: the strengthening layer is configured as a strengthening cover tightly sleeved on the positioning gear.
[0007] The utility model is further configured as follows: a limiting edge is arranged at the bottom of the reinforcing cover, a limiting groove is arranged at the bottom of the positioning gear, and the limiting edge is embedded and matched with the limiting groove.
[0008] The utility model is further configured as follows: the limiting edges and limiting grooves are provided in a plurality of groups, and the limiting grooves are located between adjacent recessed positions of the positioning gears.
[0009] The utility model is further configured as follows: the strengthening layer is made of iron material.
[0010] The utility model is further configured as follows: the telescopic mechanism comprises a spring cavity, a telescopic spring and a marble; the telescopic spring is arranged in the spring cavity; and the marble is arranged at the outer end of the telescopic spring.
[0011] The utility model is further configured as follows: the side sealing plate is provided with a pole piece a and a pole piece b, one end of the pole piece a and the pole piece b extending into the inner side of the side sealing plate forms a fixed contact a and a fixed contact b, and a moving contact piece is provided between the fixed contact a and the fixed contact b.
[0012] The utility model is further configured as follows: a flange disk is arranged on the rotating central axis, and the flange disk and the moving contact piece are arranged to abut against each other.
[0013] In summary, the utility model has the following beneficial effects:
[0014] Compared with the prior art, the utility model provides a reinforcement layer on the positioning gear, and the reinforcement layer is composed of a reinforcement cover tightly mounted on the positioning gear, and the reinforcement cover is made of iron material, and low-carbon steel or stainless steel can be selected. After such arrangement, the marbles of the telescopic mechanism are in contact with the reinforcement cover when abutting and rubbing the positioning gear. After long-term use, the surface profile of the positioning gear will basically not be worn, and the wear resistance is good. The rotation positioning accuracy and retention performance are good, and the service life of the rotary switch is long. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the rotary switch.
[0016] Figure 2 It is a schematic diagram of the explosion structure of a rotary switch.
[0017] Figure 3 It is a schematic diagram of the local structure of the positioning gear and the reinforcement cover.
[0018] Figure 4 It is a schematic diagram of the local structure of the rotating central axis and the side sealing plate.
[0019] Figure numerals: 1. Shell; 2. Rotating central axis; 3. Side sealing plate; 301. Pole piece a; 3011. Fixed contact a; 302. Pole piece b; 3021. Fixed contact b; 303. Moving contact piece; 4. Positioning gear; 5. Telescopic mechanism; 501. Spring chamber; 502. Telescopic spring; 503. Marble; 601. Reinforced cover; 7. Limiting edge; 8. Limiting groove; 9. Flange plate; 10. Recessed position. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0021] This embodiment discloses a rotary switch, such as Figure 1-4 As shown, it includes a housing 1, a rotating central axis 2 and a side sealing plate 3. The rotating central axis 2 is rotatably arranged in the housing 1, and the side sealing plates 3 are fixedly installed on both sides of the housing 1. The rotating central axis 2 is provided with a positioning gear 4, and the side sealing plates 3 are provided with a telescopic mechanism 5. The end of the telescopic mechanism 5 is inserted into a recessed position 10 on the positioning gear 4 to constrain the rotation of the positioning gear 4. The surface of the positioning gear 4 includes a strengthening layer consistent with the contour of the positioning gear 4. Among them, the rotating central axis 2 is an integrally formed injection molded part made of plastic, so the wear resistance of the positioning gear itself is general. After the strengthening layer is provided, the wear resistance of the surface is enhanced, and it is not easy to wear, so that the constraint cooperation between the end of the telescopic mechanism 5 and the positioning gear 4 can maintain good positioning accuracy and positioning retention ability after long-term use, and the service life of the rotary switch is long.
[0022] Further, see Figure 3 , the strengthening layer is set as a strengthening cover 601 tightly mounted on the positioning gear 4. The strengthening cover 601 cooperates with the positioning gear 4 by friction and is a detachable structure. In this way, during production, the positioning gear 4 and the rotating central axis 2 are integrally injection molded, and the strengthening cover 601 is manufactured separately, and then the strengthening cover is sleeved on the positioning gear. At the same time, in order to ensure the stable cooperation between the strengthening cover 601 and the positioning gear 4, a limiting rib 7 is also set at the bottom of the strengthening cover 601, and a limiting groove 8 is set at the bottom of the positioning gear 4, and the limiting rib 7 and the limiting groove 8 are embedded and matched. The setting of the limiting rib 7 improves the torsion and deformation resistance of the strengthening cover 601, and the cooperation between the limiting rib 7 and the limiting groove 8 can effectively prevent the strengthening cover 601 and the positioning gear 4 from direct deflection and dislocation, and the cooperation stability of the two is better.
[0023] Furthermore, the limiting edges 7 and the limiting grooves 8 are arranged in several groups, and the arrangement of the several groups increases the matching reliability, and the limiting grooves 8 are located between the adjacent recessed positions 10 of the positioning gear 4, effectively utilizing the raised part of the positioning gear 4, and are easy to process.
[0024] Furthermore, the strengthening layer 6 is preferably made of iron materials such as low carbon steel or stainless steel.
[0025] Further, see Figure 2 The telescopic mechanism 5 includes a spring chamber 501, a telescopic spring 502 and a marble 503. The telescopic spring 502 is arranged in the spring chamber 501, and the marble 503 is arranged at the outer end of the telescopic spring 502. The marble 503 is driven by the elastic force of the telescopic spring 502 to always press against the positioning gear. Every time the positioning gear rotates a concave position, the marble 503 is inserted for positioning. Before the external force overcomes the elastic force of the telescopic spring 502 to drive the rotating central axis 2 to rotate, the telescopic mechanism 5 can ensure that the position of the rotating central axis 2 remains unchanged.
[0026] Further, see Figure 2 and Figure 4 The side sealing plate 3 is provided with a pole piece a301 and a pole piece b302. In this embodiment, the pole piece a301 is provided as one piece, and the pole piece b302 is provided as two pieces. One end of the pole piece a301 and the pole piece b302 extending into the inner side of the side sealing plate 3 is correspondingly formed with a fixed contact a3011 and two fixed contacts b3021. A moving contact piece 303 is provided between the fixed contact a and the fixed contact b, and two moving contact pieces 303 are correspondingly provided.
[0027] Furthermore, a flange plate 9 is provided on the rotating central axis 2, and the flange plate 9 has a flange structure, which is arranged against the moving contact piece 303. When the rotating central axis 2 rotates, the flanges of different shapes and structures contact the moving contact piece 303, thereby controlling the on-off between the fixed contact a and the fixed contact b. For example, referring to Figure 4 The moving contact piece 303 between the fixed contact a and the fixed contact b is in a normally closed state. When it turns to the protruding flange on the flange disk 9, it presses the moving contact piece 303 inward, so that the moving contact piece 303 is separated from the fixed contact b3021, thereby disconnecting the circuit.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.
Claims
1. A rotary switch, comprising a housing (1), a rotating central axis (2) and side sealing plates (3), wherein the rotating central axis (2) is rotatably arranged in the housing (1), and the side sealing plates (3) are fixedly mounted on both sides of the housing (1), characterized in that: The rotating central axis (2) is provided with a positioning gear (4), and the side sealing plate (3) is provided with a telescopic mechanism (5), the end of the telescopic mechanism (5) is inserted into a recessed position on the positioning gear (4) to constrain the rotation of the positioning gear (4), and the surface of the positioning gear (4) includes a strengthening layer that is consistent with the contour of the positioning gear (4).
2. A rotary switch according to claim 1, characterized in that: The strengthening layer is configured as a strengthening cover (601) that is tightly sleeved on the positioning gear (4).
3. A rotary switch according to claim 2, characterized in that: A limiting ridge (7) is provided at the bottom of the reinforcing cover (601), and a limiting groove (8) is provided at the bottom of the positioning gear (4), wherein the limiting ridge (7) and the limiting groove (8) are embedded and matched.
4. A rotary switch according to claim 3, characterized in that: The limiting edges (7) and the limiting grooves (8) are provided in a plurality of groups, and the limiting grooves (8) are located between adjacent recessed positions of the positioning gear (4).
5. A rotary switch according to claim 1, characterized in that: The strengthening layer (6) is made of iron material.
6. A rotary switch according to claim 1, characterized in that: The telescopic mechanism (5) comprises a spring cavity (501), a telescopic spring (502) and a marble (503); the telescopic spring (502) is arranged in the spring cavity (501), and the marble (503) is arranged at the outer end of the telescopic spring (502).
7. A rotary switch according to claim 1, characterized in that: The side sealing plate (3) is provided with a pole piece a (301) and a pole piece b (302); one end of the pole piece a (301) and the pole piece b (302) extending into the inner side of the side sealing plate (3) forms a fixed contact point a (3011) and a fixed contact point b (3021); a moving contact piece (303) is provided between the fixed contact point a and the fixed contact point b.
8. A rotary switch according to claim 7, characterized in that: A flange disk (9) is arranged on the rotating central shaft (2), and the flange disk (9) and the movable contact piece (303) are arranged to abut against each other.