Middle cover mechanism applied to multi-gear switch and multi-gear switch

Abstract

The utility model provides a kind of middle cover mechanism and multi-position switch applied to multi-position switch belongs to switch field, and it include: middle cover, multiple gear hole groups are provided on middle cover, the shape of each gear hole group is circular, the central axis of multiple gear hole groups is all collinear with the central axis of middle cover, the diameter of multiple gear hole groups increases gradually from inside to outside;Pivot, rotatably inserted in middle cover;Rotary block, set on pivot;Elastic component, first end is inserted in rotary block;When working, the second end of elastic component is engaged with corresponding gear hole. It aims at solving the problem that the prior art applied to multi-position switch cannot realize a variety of needs of one position switch, and the versatility is poor. The technical effect achieved is: a kind of switch can be applied to the demand of multiple scenes, and has good versatility.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a middle cover mechanism for a multi-position switch, and also to a multi-position switch. Background Technology

[0002] In fields such as smart homes, industrial control, and automotive electronics, multi-position rotary switches are crucial components for achieving precise adjustment. For example, the stable operation of appliances like fan speed control and automotive air conditioning temperature control relies on their stability. Existing multi-position rotary switches primarily consist of a knob body, a middle cover, a base, conductive components, and positioning elements. The middle cover, as a key supporting structure, mostly serves only a single function: connecting the knob to the base and protecting internal components. In terms of position design, the industry generally adopts a single-level rotary position structure. Currently, there are two main types of rotary gear switches. One type has a single row of positioning holes on the base, and the gear switching is achieved by the cooperation of the elastic element at the bottom of the knob with different positioning holes. The other type has a single-layer transmission structure designed inside the knob, which meshes with the corresponding part on the base to determine the gear. Regardless of the structure, it is a single-level gear structure. The gear structure is difficult to meet the needs of complex equipment for multiple gears and fine adjustment. Moreover, most switches can only be used for one gear adjustment requirement, and it is impossible to realize the application of one gear switch for multiple needs, resulting in poor versatility. Utility Model Content

[0003] This utility model provides a middle cover mechanism for multi-position switches, which solves the defects of existing technologies that cannot meet the multiple needs of a single position switch and have poor versatility. It enables a single switch to be used in multiple scenarios and has better versatility.

[0004] The first aspect of this utility model provides a middle cover mechanism for a multi-position switch, comprising: The middle cover has multiple sets of shift holes, each set of holes is circular in shape, and the central axis of the multiple sets of holes is collinear with the central axis of the middle cover. The diameter of the multiple sets of holes increases sequentially from the inside to the outside. A rotating shaft is inserted into the middle cover; A rotating block, which is fitted onto a rotating shaft; The elastic component has its first end inserted into the rotating block. Each gear shift hole group includes: Multiple gear holes are provided, with each gear hole group having multiple gear holes spaced out along the circumference on the middle cover. The number of gear holes in each gear hole group is different. During operation, the second end of the elastic component engages with the corresponding gear hole.

[0005] In addition, the middle cover mechanism of this utility model for multi-position switches may also have the following additional technical features: In some embodiments of this utility model, it further includes: There are multiple gear slots, all of which are formed on the rotating block. Each gear hole group has at least one gear hole that is opposite to the corresponding gear slot. At least one gear slot is fitted with an elastic component.

[0006] In some embodiments of this utility model, the elastic component includes: A spring is inserted into the corresponding gear slot. The ball bearing is located at the end of the spring that is away from the bottom wall of the gear position hole. During operation, the ball bearing engages with the corresponding gear position hole.

[0007] In some embodiments of this utility model, the rotating shaft includes: The first shaft part, the first end of the first shaft part is rotatably inserted into the middle cover, and a rotating block is sleeved on the first shaft part; The second shaft portion is connected to the second end of the first shaft portion.

[0008] In some embodiments of this utility model, it further includes: Connecting strip, the connecting strip is set on the side of the middle cover away from the rotating block.

[0009] In some embodiments of this utility model, it further includes: There are multiple protrusions, and each gear slot has multiple protrusions on its inner sidewall. The spring is inserted into the corresponding gear slot and engages with the corresponding protrusion.

[0010] The second aspect of this utility model provides a multi-position switch, including all the technical features of the middle cover mechanism applied to a multi-position switch in the first aspect, and further including: The lower cover is connected to the middle cover on one side; The top cover is connected to the middle cover on the other side, and the rotating block is rotatably set inside the top cover; The sensor is connected to one side of the middle cover, with one part of the sensor located inside the middle cover and the other part located inside the lower cover. The first end of the rotating shaft passes through the middle cover and is connected to the adjustment component. The sensor is connected to the adjustment component, and the adjustment component is used to adjust the sensor to adjust the gear.

[0011] In some embodiments of this utility model, it further includes: A limiting block is provided on the side wall of the upper cover near the rotating block; The hinge also includes: The locking block is located on the surface of the rotating block away from the middle cover, and the locking block can rotate to abut against the limiting block.

[0012] In some embodiments of this utility model, it further includes: The top cover has multiple adjustment holes, which are spaced apart along the circumference. The adjusting rod can pass through any of the adjusting holes and abut against the surface of the rotating block. The locking block can rotate between the limiting block and the adjusting rod.

[0013] In some embodiments of this utility model, it further includes: Knob cap, which is connected to the second end of the pivot.

[0014] In summary, this application includes the following beneficial technical effects: by having the central axes of multiple gear hole groups collinear with the central axis of the middle cover, and by having the diameters of the multiple gear hole groups increase sequentially from the inside out, the total number of gear adjustments of this middle cover mechanism can be varied. Users can select different gear hole groups to set the corresponding elastic components according to actual needs to meet user requirements, while the switch can still achieve 360-degree gear rotation. Thus, it realizes the requirement that one switch can be applied to multiple scenarios and has good versatility. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 The first perspective view of the middle cover of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention is shown schematically.

[0016] Figure 2 The second perspective view of the middle cover of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention is shown schematically.

[0017] Figure 3 The first perspective view schematically shows a rotating shaft of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention.

[0018] Figure 4 A second perspective view schematically illustrates the rotating shaft of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention.

[0019] Figure 5The third view schematically illustrates a perspective view of the rotating shaft of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention.

[0020] Figure 6 The diagram shows a partially enlarged third view of a perspective view of the rotating shaft of a middle cover mechanism applied to a multi-position switch according to some embodiments of the present invention.

[0021] Figure 7 The fourth perspective view schematically illustrates the rotating shaft of the middle cover mechanism of a multi-position switch according to some embodiments of the present invention.

[0022] Figure 8 A first perspective view of the top cover of a multi-position switch according to some embodiments of the present invention is shown schematically.

[0023] Figure 9 A second perspective view of the top cover of a multi-position switch according to some embodiments of the present invention is shown schematically.

[0024] Figure 10 A perspective view schematically illustrates a multi-position switch according to some embodiments of the present invention, in which a sensor is provided inside the lower cover.

[0025] Figure 11 A first exploded view of a multi-position switch according to some embodiments of the present invention is shown schematically.

[0026] Figure 12 A second exploded view of a multi-position switch according to some embodiments of the present invention is shown schematically.

[0027] Figure 13 A perspective view of a multi-position switch according to some embodiments of the present invention is shown schematically.

[0028] Figure label: 1. Middle cover; 101. First cover body; 102. Connecting socket; 103. Gear hole; 104. Connecting strip; 105. Connecting piece; 2. Rotating shaft; 201. Rotating block; 202. Connecting ring; 203. Locking block; 204. First shaft part; 205. Second shaft part; 206. Gear groove; 207. Adjusting piece; 208. Protrusion; 3. Top cover; 301. Second cover body; 302. Limiting block; 303. Adjusting hole; 304. Connecting groove; 305. Positioning groove; 306. Connecting sleeve; 307. Protruding ring; 4. Bottom cover; 5. Adjusting ring; 6. Adjusting rod; 7. Sensor; 8. Elastic component; 81. Spring; 82. Ball bearing; 9. Screw; 10. Screw rod; 11. Knob cap; 12. Nut; 13. Bushing; 14. Needle roller pin. Detailed Implementation

[0029] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0030] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0031] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0032] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.

[0033] like Figures 1 to 13 As shown, according to an embodiment of the first aspect of this utility model, a middle cover 1 mechanism for a multi-position switch is proposed, including a middle cover 1, a rotating block 201, a set of position holes 103, a rotating shaft 2, and an elastic component 8; the rotating block 201 is sleeved on the rotating shaft 2, and the rotating shaft 2 is rotatably inserted into the middle cover 1. There are multiple sets of position holes 103, each set of position holes 103 is circular in shape, the central axis of the multiple sets of position holes 103 is collinear with the central axis of the middle cover 1, the diameter of the multiple sets of position holes 103 increases sequentially from the inside to the outside, each set of position holes 103 includes multiple position holes 103, the multiple position holes 103 of each set of position holes 103 are spaced apart along the circumferential direction on the middle cover 1, and the number of position holes 103 in each set of position holes 103 is different. The rotating block 201 is sleeved on the rotating shaft 2, and the first end of the elastic component 8 is inserted into the rotating block 201. During operation, the second end of the elastic component 8 engages with the corresponding position hole 103.

[0034] In the above embodiments, it should be noted that the elastic component 8 can be an existing spring 81 column structure; the elastic component 8 is detachably connected to the rotating block 201.

[0035] The technical effect achieved by the above embodiment is as follows: by having the central axis of multiple gear holes 103 groups collinear with the central axis of the middle cover 1, and by setting the diameter of multiple gear holes 103 groups to increase sequentially from the inside to the outside, the total number of gear adjustments of the middle cover 1 mechanism can be multiple. Users can select different gear holes 103 groups to set the corresponding elastic components 8 according to actual needs to meet user needs, and the switch can still achieve 360-degree gear rotation, thereby realizing the need for a switch to be applied to multiple scenarios and having good versatility.

[0036] Optional, such as Figures 3 to 7As shown, it also includes a gear slot 206. There are multiple gear slots 206, and multiple gear slots 206 are opened on the rotating block 201. At least one gear hole 103 on each gear hole 103 group is arranged opposite to the corresponding gear slot 206. At least one gear slot 206 is provided with an elastic component 8.

[0037] In the above optional embodiments, it should be noted that the elastic component 8 is detachably inserted into the corresponding stop slot 206.

[0038] The advantages of the above optional embodiments are that the setting of the gear slot 206 increases the convenience of disassembly and assembly of the elastic component 8 and the reliability of its operation.

[0039] Optional, such as Figure 11 and Figure 12 As shown, the elastic component 8 includes a spring 81 and a ball 82. The spring 81 is inserted into the corresponding gear slot 206. The end of the spring 81 facing away from the bottom wall of the gear hole 103 is provided with a ball 82. During operation, the ball 82 engages with the corresponding gear hole 103.

[0040] The advantages of the above optional embodiments are that the smoothness and reliability of gear shifting are increased by the cooperation of spring 81 and ball 82.

[0041] Optional, such as Figures 4 to 7 As shown, the rotating shaft 2 includes a first shaft portion 204 and a second shaft portion 205. The first end of the first shaft portion 204 is rotatably inserted into the middle cover 1. A rotating block 201 is sleeved on the first shaft portion 204. The second shaft portion 205 is connected to the second end of the first shaft portion 204.

[0042] In the above optional embodiments, it should be noted that the first shaft portion 204 and the second shaft portion 205 are integrally formed.

[0043] Optional, such as Figure 1 and Figure 2 As shown, it also includes a connecting strip 104, which is disposed on the side of the middle cover 1 away from the rotating block 201.

[0044] In the above optional embodiments, it should be noted that the connecting strip 104 is welded, screwed, or integrally formed with the middle cover 1.

[0045] The advantages of the above optional embodiments are: the connection strip 104 allows the middle cover 1 to be pre-positioned when connecting with other parts of the knob, which increases the convenience of connection.

[0046] Optional, such as Figures 3 to 7As shown, each gear slot 206 has multiple protrusions 208 on its inner sidewall. The spring 81 is inserted into the corresponding gear slot 206 and engages with the corresponding protrusion 208.

[0047] In the above optional embodiments, it should be noted that the multiple protrusions 208 on the inner sidewall of each gear slot 206 are arranged in a circumferential array.

[0048] The advantages of the above optional embodiments are as follows: by setting multiple protrusions 208, the spring 81 can be directly snapped and fixed by the protrusions 208 after being inserted into the corresponding stop slot 206, which makes installation and disassembly more convenient and further increases the versatility.

[0049] like Figures 8 to 13 As shown in the second aspect of the present invention, a multi-position switch is provided, including all the technical features of the middle cover 1 mechanism of the first aspect of the present invention applied to the multi-position switch. In addition, it includes an upper cover 3, a lower cover 4, a sensor 7 and an adjusting member 207. The lower cover 4 is connected to one side of the middle cover 1, the upper cover 3 is connected to the other side of the middle cover 1, the sensor 7 is connected to one side of the middle cover 1, the first end of the shaft passes through the middle cover 1 and is connected to the adjusting member 207, a part of the sensor 7 is located inside the middle cover 1, and another part of the sensor 7 is located inside the lower cover 4. The sensor 7 is connected to the adjusting member 207, and the adjusting member 207 is used to adjust the sensor 7 to adjust the position. The rotating block 201 is rotatably disposed inside the upper cover 3.

[0050] In the above optional embodiments, it should be noted that the shaft and the middle cover 1 are rotatably connected, and the first end of the first shaft 204 is provided with an adjusting member 207. The sensor 7 can be a Hall chip or a potentiometer, and the adjusting part can be a plug or a magnet. When the sensor 7 is a Hall chip, the adjusting member 207 is a magnet, and the adjusting member 207 is magnetically connected to the Hall chip. When the sensor 7 is a potentiometer, the adjusting member 207 is a plug, and the adjusting member 207 is inserted into the sensor 7.

[0051] It also includes screws 9 and threaded rods 10. The middle cover 1 includes a first cover body 101 and a connector 105. The upper cover 3 includes a second cover body 301, a connecting sleeve 306, and a convex ring 307. One side of the first cover body 101 is connected to the lower cover 4, and the other side of the first cover body 101 is connected to the upper cover 3. The connector 105 is provided on the side of the first cover body 101 near the lower cover 4 by welding or integral molding. The second cover body 301 is provided with a connecting sleeve 306 and a convex ring 307 on the side away from the first cover body 101. The convex ring 307 is sleeved on the connecting sleeve 306. The adjusting ring 5 is movably connected between the convex ring 307 and the connecting sleeve 306. All the stop holes 103 are opened on the first cover body 101. The connecting strip 104 is connected to the first cover body 101. A cover 101 is integrally formed or welded together, and a connecting strip 104 is inserted into the lower cover 4. A connecting hole 102 is provided on the first cover 101, and a connecting groove 304 is provided on the second cover 301. A screw 9 passes through the lower cover 4 and the connecting hole 102 and is threaded into the connecting groove 304 to realize the connection between the lower cover 4, the middle cover 1 and the upper cover 3. The sensor 7 is connected to the connector 105 through the screw 10. A connecting sleeve 306 is sleeved on the second shaft part 205 of the rotating shaft 2. A bushing 13 is provided between the connecting sleeve 306 and the second shaft part 205. A positioning groove 305 is provided on the second cover 301. A needle roller pin 14 is inserted into the positioning groove 305 on the second cover 301 for positioning the initial point.

[0052] The advantages of the above optional embodiments are that the switch position can be effectively adjusted by setting the adjustment member 207 and the sensor 7.

[0053] Optional, such as Figures 3 to 7 As shown, the rotating shaft 2 also includes a locking block 203 and a limiting block 302. The upper cover 3 is provided with a limiting block 302 on the side wall near the rotating block 201. The locking block 203 is provided on the surface of the rotating block 201 away from the middle cover 1. The locking block 203 can rotate to abut against the limiting block.

[0054] In the above optional embodiments, it should be noted that the shaft also includes a connecting ring 202. The connecting ring 202 is disposed on the rotating block 201 by means of welding, screwing or integral molding, etc., and the locking block 203 is integrally formed with the connecting ring 202.

[0055] The beneficial effects of the above optional embodiments are as follows: by setting the card block 203 and the limit block 302, the limit is achieved when the switch is adjusted to the maximum position, so as to avoid the situation where the switch jumps directly from the maximum position to the minimum position, which would affect the reliability of the switch.

[0056] Optional, as shown in the figure. Figure 9 , Figure 11 and Figure 12As shown, it also includes an adjusting rod 6. The upper cover 3 has multiple adjusting holes 303. The multiple adjusting holes 303 are spaced apart along the circumferential direction. The adjusting rod 6 can pass through any one of the adjusting holes 303 and abut against the surface of the rotating block 201. The locking block 203 can rotate between the limiting block 302 and the adjusting rod 6.

[0057] In the above optional embodiments, it should be noted that an adjustment ring 5 is also included. The adjustment ring 5 is movably connected to the upper cover 3 and sleeved on the first shaft portion 204. The adjustment rod 6 is welded or integrally formed on the adjustment ring 5.

[0058] The advantages of the above optional embodiments are as follows: by setting the adjustment ring 5 and the gear adjustment lever 6 in combination with the setting of the locking block 203 and the limiting block 302, the user can adjust the maximum number of gears according to actual needs without disassembling the switch, which further increases the versatility of the switch.

[0059] Optional, such as Figures 11 to 13 As shown, it also includes a knob cap 11, which is connected to the second end of the rotating shaft 2.

[0060] In the above optional embodiments, it should be noted that the knob cap 11 and the second end of the rotating shaft 2 are connected by welding, screwing, or bonding.

[0061] It also includes a nut 12, which is screwed onto the connecting sleeve 306. Both the nut 12 and the bushing 13 abut against the knob cap 11.

[0062] The advantages of the above optional embodiments are that the setting of the knob cap 11 increases the convenience of shifting gears in this switch.

[0063] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A middle cover mechanism for a multi-position switch, characterized in that, include: The middle cover (1) is provided with a plurality of gear hole (103) groups. Each gear hole (103) group is circular in shape. The central axis of the plurality of gear hole (103) groups is collinear with the central axis of the middle cover (1). The diameter of the plurality of gear hole (103) groups increases sequentially from the inside to the outside. A rotating shaft (2) is rotatably inserted into the middle cover (1); A rotating block (201) is sleeved on the rotating shaft (2); An elastic component (8) is provided, with its first end inserted into the rotating block (201); Each of the aforementioned gear hole (103) groups includes: Multiple gear holes (103) are provided. The multiple gear holes (103) of each gear hole (103) group are spaced apart along the circumferential direction on the middle cover (1). The number of gear holes (103) in each gear hole (103) group is different. During operation, the second end of the elastic component (8) engages with the corresponding gear hole (103).

2. The middle cover mechanism for a multi-position switch according to claim 1, characterized in that, Also includes: The gear slot (206) is provided in multiple ways. All gear slots (206) are provided on the rotating block (201). At least one gear hole (103) in each gear hole (103) group is opposite to the corresponding gear slot (206). At least one gear slot (206) is provided with the elastic component (8).

3. The middle cover mechanism for a multi-position switch according to claim 2, characterized in that, The elastic component (8) includes: A spring (81) is inserted into the corresponding stop slot (206); A ball (82) is disposed at one end of the spring (81) away from the bottom wall of the gear hole (103). During operation, the ball (82) engages with the corresponding gear hole (103).

4. The middle cover mechanism for a multi-position switch according to claim 1, characterized in that, The rotating shaft (2) includes: A first shaft portion (204) is rotatably inserted into the middle cover (1) at its first end, and the rotating block (201) is sleeved on the first shaft portion (204). The second shaft portion (205) is connected to the second end of the first shaft portion (204).

5. The middle cover mechanism for a multi-position switch according to claim 1, characterized in that, Also includes: A connecting strip (104) is provided on the side of the middle cover (1) opposite to the rotating block (201).

6. The middle cover mechanism for a multi-position switch according to claim 3, characterized in that, Also includes: Protrusions (208), there are multiple protrusions (208), and each inner sidewall of the gear slot (206) is provided with multiple protrusions (208); The spring (81) is inserted into the corresponding gear slot (206) and engages with the corresponding protrusion (208).

7. A multi-position switch, characterized in that, Including all the technical features of the middle cover mechanism applied to a multi-position switch as described in any one of claims 1 to 6, and further including: The lower cover (4) is connected to one side of the middle cover (1); The upper cover (3) is connected to the other side of the middle cover (1), and the rotating block (201) is rotatably disposed inside the upper cover (3); Sensor (7), the sensor (7) is connected to one side of the middle cover (1), a part of the sensor (7) is located inside the middle cover (1), and the other part of the sensor (7) is located inside the lower cover (4); Adjustment component (207): The first end of the rotating shaft (2) passes through the middle cover (1) and is connected to the adjustment component (207). The sensor (7) is connected to the adjustment component (207) in cooperation. The adjustment component (207) is used to adjust the sensor (7) to adjust the gear.

8. The multi-position switch according to claim 7, characterized in that, Also includes: A limiting block (302) is disposed on the side wall of the upper cover (3) near the rotating block (201); the rotating shaft (2) further includes: A locking block (203) is disposed on the surface of the rotating block (201) away from the middle cover (1), and the locking block (203) can rotate to abut against the limiting block (302).

9. The multi-position switch according to claim 8, characterized in that, Also includes: Adjustment holes (303): The upper cover (3) is provided with a plurality of adjustment holes (303), and the plurality of adjustment holes (303) are spaced apart along the circumferential direction; The adjusting rod (6) can pass through any one of the adjusting holes (303) and abut against the surface of the rotating block (201). The locking block (203) can rotate between the limiting block (302) and the adjusting rod (6).

10. The multi-position switch according to claim 7, characterized in that, Also includes: A knob cap (11) is connected to the second end of the rotating shaft (2).

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