CN217822511U - Combined cam and cam switch - Google Patents

Abstract

The utility model relates to a modular cam and cam switch, include: the connecting blocks are arranged in a plurality and can be detachably connected along the circumferential direction, and the outer cambered surfaces of the connecting blocks are spliced to form a concave edge surface of the combined cam; the break-off block module is detachably connected with the side part of the break-on block along the circumferential direction, and the outer arc surface of the break-off block module forms a flange surface of the combined cam. The quantity of the combined and matched switch-on block and switch-off block modules is different, parameters such as different lengths of the flange surfaces, the length of the concave edge surfaces, the quantity of the flange surfaces and the quantity of the concave edge surfaces can be obtained, the combined cam rotates for one circle, the flange surfaces with different quantities push the contact assembly to be switched off and the concave edge surfaces with different quantities to avoid the contact assembly to be reset and switched on, different electrical on-off control is realized, the combined cam is suitable for wider electrical control occasions, the combined cam has rich functions, the mode of forming different combined cams is simple, various molds do not need to be prepared, and the combined cam is lower in manufacturing and use cost.

Description

Combined cam and cam switch

Technical Field

The utility model relates to an electrical switch technical field especially relates to a modular cam and cam switch.

Background

Currently, in an electrical system, to realize on-off control of a device, a cam switch is often used, and the working principle of the cam switch is roughly as follows: the cam is driven to rotate by rotating the handle, the flange surface of the cam can push the sliding block or the flange surface can avoid the sliding block, so that the sliding block can move back and forth under the action of pressure or elasticity to drive the contact to be disconnected or closed, and therefore disconnection or connection control of a circuit can be achieved.

Then, cams used in the existing cam switch are all of an integral structure, and are processed by adopting an integral forming manufacturing process, so that the shape and the size of a flange surface and a concave edge surface of the cam are fixed once the cam is manufactured and formed, and the on-off rule (such as an on gear, an off gear, an interval between on-off and the like) of a cam control contact is also fixed, so that the cam with one specification and size can only be suitable for one on-off working condition. When different contact on-off requirements are met, different cams are manufactured by designing various different molds for adaptation, so that the applicable object range of the cams is small, the functions are single, and the manufacturing and using costs are high.

SUMMERY OF THE UTILITY MODEL

Therefore, a need exists for a combined cam and cam switch, which solves the problems of narrow application range, single function, and high manufacturing and using costs of the prior art.

In one aspect, the present application provides a combination cam, comprising:

the connecting blocks are arranged in a plurality and can be detachably connected in a continuous mode along the circumferential direction, and the outer arc surfaces of the connecting blocks are spliced to form the concave edge surface of the combined cam; and

the break-off block module is detachably connected to the side part of the make-up block along the circumferential direction, and the outer arc surface of the break-off block module forms a flange surface of the combined cam.

The combined cam application of the scheme is equipped in a cam switch and used for being matched with a contact assembly to work, on-off control over the contact assembly is achieved, and the combined cam application can be suitable for different electrical on-off requirements. Specifically, the combined cam is formed by detachably assembling the connecting blocks and the disconnecting block modules in a splicing mode, the required number of connecting blocks and disconnecting block modules can be selected to be connected in the circumferential direction to form a closed cam structure according to actual needs, and parameters such as different flange surface lengths, concave edge surface lengths, the number of flange surfaces, the number of concave edge surfaces and the like can be obtained due to the fact that the number of the connecting blocks and the disconnecting block modules which are combined and matched is different, so that when the combined cam rotates for one circle, different numbers of flange surfaces push the contact assemblies to be disconnected and different numbers of concave edge surface avoiding contact assemblies to be reset and connected, different electrical on-off controls are achieved, the combined cam is suitable for wider electrical control occasions, the combined cam is rich in functions, the mode for forming different combined cams is simple, various molds do not need to be prepared, and the manufacturing and using costs of the combined cam are lower.

The technical scheme of the application is further explained as follows:

in one embodiment, the break block module comprises at least two transition blocks, the transition blocks are detachably jointed with the adjacent joint blocks, and the extrados surfaces of the at least two transition blocks are jointed to form the flange surface of the combined cam, or;

the break-off block module comprises at least one transition block and at least one break-off block, at least one break-off block is detachably connected between two adjacent transition blocks in an adjoining mode, and the outer arc surface of the break-off block and the outer arc surface of the transition block are spliced to form a flange surface of the combined cam;

in one embodiment, the breaking block is provided with a first clamping groove and a first clamping hook, the transition block is provided with a second clamping groove and a second clamping hook, the first clamping hook is detachably clamped in the second clamping groove, and the second clamping hook is detachably clamped in the first clamping groove; or

And between two adjacent disconnecting blocks, two first clamping grooves and two first clamping hooks are respectively in one-to-one corresponding separable clamping connection.

In one embodiment, one breaking block is provided with two groups of first clamping grooves and first clamping hooks, and the two groups of first clamping grooves and the first clamping hooks are arranged along the radial center line of the breaking block in a 180-degree rotation symmetric structure.

In one embodiment, the connection block, the transition block and the disconnection block are convexly provided with clamping convex bodies towards one side of the wheel center of the combined cam, and the clamping convex bodies are used for being clamped with clamping grooves formed in the outer peripheral surface of the cam core.

In one embodiment, opposite ends of the clamping convex body respectively extend out of axially opposite sides of the connection block, the transition block and the disconnection block.

In one embodiment, the combined cams are arranged in at least two layers, at least two combined cams are arranged in an axial stacking mode and are used for being fixedly connected with a rotating handle, and the flange surfaces and the concave edge surfaces of the combined cams in two adjacent layers are arranged in a staggered mode in the circumferential direction or in an aligned mode in the axial direction.

In one embodiment, the combined cam comprises at least two flange surfaces and at least two concave surfaces, and the flange surfaces and the concave surfaces are arranged alternately one by one in the circumferential direction.

In another aspect, the present application also provides a cam switch, including:

rotating the handle;

the cam core is connected with the rotating handle;

the combined cam is sleeved outside the cam core;

a housing; and

the combined cam and the reset spring can respectively drive the sliding block to move so as to enable the first contact and the second contact to be disconnected or connected.

In one embodiment, the cam switch further comprises a clamping ring, the clamping ring is sleeved outside the cam core, and the clamping ring is used for fixing the combined cam clamping hoop on the cam core.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

FIG. 1 is a schematic view of a cam switch according to the present application;

FIG. 2 is a structural layout diagram of the two cam switches and the two contact assemblies of FIG. 1 in a stacked arrangement;

FIG. 3 is a view of the structure of the dual cam switch assembly with the cam core and the housing;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic view of the construction of the composite cam of the present application;

FIG. 6 is a schematic diagram of a connection block;

FIG. 7 is a block diagram of another perspective of FIG. 6;

FIG. 8 is a schematic structural diagram of a break-away block;

FIG. 9 is a block diagram of another perspective of FIG. 8;

FIG. 10 is a schematic diagram of a transition block;

FIG. 11 is a block diagram of another perspective of FIG. 10;

fig. 12 is a structural view from another perspective of fig. 11.

Description of the reference numerals:

100. a cam switch; 10. a combination cam; 10a, a flange face; 10b, a concave edge surface; 11. a switch-on block; 12. a transition block; 121. a transition arc surface; 122. a second card slot; 123. a second hook; 13. a breaking block; 131. a first card slot; 132. a first hook; 14. clamping the convex body; 20. a cam core; 21. a clamping groove; 30. a housing; 40. a contact assembly; 41. a static contact piece; 411. a first contact; 42. a movable contact spring; 421. a second contact; 43. a return spring; 44. a slider; 50. a snap ring; 60. a cam cover.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and fig. 2, a cam switch 100 according to an embodiment of the present disclosure is applied to various electrical systems to control on/off of an electrical device. For example, the cam switch 100 may be used in an elevator system to control power on or off control of a power supply circuit.

Specifically, the cam switch 100 includes: a rotating handle (not shown), a cam core 20, a combination cam 10, a housing 30, and a contact assembly 40. The housing 30 is a bearing substrate for loading and fixing functional components such as a rotating handle, the cam core 20, the combined cam 10, the contact assembly 40, and the like, so as to ensure the overall structure of the cam switch 100.

With continued reference to fig. 3 to 5, the cam core 20 is connected to the rotating handle, and the combined cam 10 is sleeved outside the cam core 20. By rotating the rotating handle, the cam core 20 can be driven to rotate, and then the combined cam 10 can be driven to rotate, so that the effect that the flange surface 10a and the concave edge surface 10b of the combined cam 10 are switched to be in contact with the contact assembly 40, and the on-off state of the contact assembly 40 is controlled is achieved.

In this embodiment, in order to enable the rotating handle to effectively drive the cam core 20 to rotate, the rotating handle is designed to have a non-circular cross section, for example, a rectangular cross section, and accordingly a square hole is formed in the middle of the cam core 20, and the rotating handle is just inserted into the square hole, so that the cam core 20 and the rotating handle can be stably and reliably assembled.

The contact assembly 40 includes a fixed contact 41, a movable contact 42, a return spring 43 and a slider 44, the fixed contact 41 and the return spring 43 are respectively disposed on the housing 30, the movable contact 42 is disposed on the slider 44, the slider 44 is connected to the return spring 43, the fixed contact 41 is provided with a first contact 411, the movable contact 42 is provided with a second contact 421, and the combined cam 10 and the return spring 43 can respectively drive the slider 44 to move so as to disconnect or connect the first contact 411 and the second contact 421.

Preferably, in order to ensure the connection and disconnection reliability, the first contact 411 and the second contact 421 are provided in two and are matched to work in a one-to-one correspondence.

When the combined cam 10 rotates to the flange surface 10a and the slider 44 are aligned, the slider 44 is pushed by the flange surface 10a to move backward, so that the movable contact 42 is away from the stationary contact 41, the first contact 411 is out of contact with the second contact 421, and the purpose of opening the cam switch 100 is achieved, and the return spring 43 is compressed. When the combined cam 10 continues to rotate until the concave edge surface 10b is opposite to the slider 44, the slider 44 is no longer pressed, and at this time, the return spring 43 automatically extends and returns to the original position, pushing the slider 44 to extend toward the concave edge surface 10b, driving the movable contact 42 to move close to the stationary contact 41, and making the first contact 411 and the second contact 421 contact again, so as to achieve the purpose of turning on the cam switch 100.

In order to improve the usability and expand the application, the combination cam 10 may be used in combination of several ones. For example, the combined cam 10 is provided in at least two, at least two combined cams 10 are stacked in the axial direction and are both used for being fixedly connected with a rotating handle, and the flange surface 10a and the concave edge surface 10b of the combined cam 10 in two adjacent layers are arranged in a staggered manner in the circumferential direction or in an aligned manner in the axial direction. On the basis, the contact assemblies 40 matched with the combined cams 10 can be configured, and the contact assemblies 40 are ensured to be matched with the combined cams 10 in a one-to-one correspondence mode. Therefore, when the rotating handle rotates for one circle, on-off control between different combined cams 10 and the corresponding contact assemblies 40 can be realized, the effect that one cam switch 100 controls at least two electrical systems at the same time is realized, and the use performance of the cam switch 100 is greatly improved.

In some embodiments, the combined cam 10 includes at least two flange surfaces 10a and at least two concave surfaces 10b, and the flange surfaces 10a and the concave surfaces 10b are arranged alternately one by one in the circumferential direction. Thus being convenient for realizing different electrical on-off functions. For example, when the combination cam 10 has three flange faces 10a and three recess faces 10b, meaning that the combination cam 10 rotates one revolution, the corresponding contacts can be turned off three times and turned on three times; the lengths of the flange surface 10a and the concave surface 10b may be different from each other, which means that the time for opening and closing the contact may be different from each other; the position of the flange surface 10a or the recessed surface 10b and the relative position thereof can be arbitrarily set, meaning that the initial state of the corresponding contact can be set as desired. Or when the combination cam 10 has four flanged surfaces 10a and four recessed surfaces 10b, meaning that the combination cam 10 rotates one revolution, the corresponding contacts can be turned off four times, turned on four times \8230 \ 8230;.

With continued reference to fig. 5-12, a combined cam 10 is shown according to an embodiment of the present application, which includes: a switch-on block 11 and a switch-off block module. The plurality of the connecting blocks 11 are arranged, the plurality of the connecting blocks 11 are detachably connected in a continuous mode along the circumferential direction, and the outer arc surfaces of the plurality of the connecting blocks 11 are spliced to form the concave edge surface 10b of the combined cam 10; the break block module is detachably coupled to a side of the make block 11 in a circumferential direction, and an outer arc surface of the break block module forms a flange surface of the compound cam 10.

In this embodiment, the break block module includes a transition block 12 and a break block 13, the transition block 12 is provided in at least two, the transition block 12 is detachably connected to the adjacent break block 11, and the extrados surfaces of the at least two transition blocks 12 are connected to form the flange surface of the combined cam 10. Or at least one of the break-off blocks 13 is provided, at least one of the break-off blocks is detachably connected in the circumferential direction, all the break-off blocks 13 are detachably connected between two adjacent transition blocks 12, and the cambered outer surfaces of the break-off blocks 13 and the cambered outer surfaces of the transition blocks 12 are spliced to form the flange surface 10a of the combined cam 10.

In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the combined cam 10 of the above scheme is applied to the cam switch 100, and is used for cooperating with the contact assembly 40 to realize on-off control of the contact assembly 40, and can be suitable for different electrical on-off requirements.

Specifically, the combined cam 10 is formed by detachably assembling the connection block 11, the transition block 12 and the disconnection block 13 in a splicing manner, and the required number of the connection block 11, the transition block 12 and the disconnection block 13 can be selected to be continuously connected in the circumferential direction to form a closed cam structure according to actual needs, and parameters such as different lengths of the flange surfaces 10a, lengths of the concave edge surfaces 10b, the number of the flange surfaces 10a, the number of the concave edge surfaces 10b and the like can be obtained due to different numbers of the connection block 11, the transition block 12 and the disconnection block 13 which are combined and matched, so that when the combined cam 10 rotates for one circle, different numbers of the flange surfaces 10a push the contact assembly 40 to be disconnected and different numbers of the concave edge surfaces 10b to be reset and connected with the contact assembly 40, different electrical on-off control is realized, the combined cam is applicable to a wider electrical control occasion, the combined cam has rich functions, the manner of forming different combined cams 10 is simple, a plurality of molds is not required to be prepared, and the manufacturing and using cost of the combined cam 10 is lower.

On the basis of the above embodiment, the transition block 12 is provided with a transition arc surface 121, and the transition arc surface 121 is smoothly connected with the outer arc surface of the connection block 11. Preferably, the side of the slider 44 facing the combination cam 10 is a cambered surface, and the transition cambered surface 121 is configured to facilitate smooth sliding transition of the slider 44 from the flange surface 10a to the concave edge surface 10 b.

In one embodiment, the breaking block 13 is provided with a first slot 131 and a first hook 132, the transition block 12 is provided with a second slot 122 and a second hook 123, the first hook 132 is detachably engaged with the second slot 122, and the second hook 123 is detachably engaged with the first slot 131; or between two adjacent disconnecting blocks 13, the two first clamping grooves 131 and the two first hooks 132 are respectively in one-to-one corresponding separable clamping connection. Therefore, the assembly and disassembly between the two break blocks 13 or between the break block 13 and the transition block 12 are convenient and labor-saving, and the flexible assembly of different numbers of break blocks 13 and transition blocks 12 is facilitated, so that the combined cam 10 can obtain different parameters such as the length of the flange surface 10a, the length of the concave edge surface 10b, the number of the flange surfaces 10a, the number of the concave edge surfaces 10b and the like, and the requirements of different electrical on-off occasions are met.

Further, one of the breaking blocks 13 is provided with two sets of the first locking groove 131 and the first locking hook 132, and the two sets of the first locking groove 131 and the first locking hook 132 are arranged along the radial center line of the breaking block 13 in a 180 ° rotational symmetric structure. Therefore, the direction of the breaking block 13 does not need to be distinguished during assembly, direct assembly is facilitated, and the assembly efficiency is improved.

In some embodiments, clamping protrusions 14 are protruded from the side of the switch-on block 11, the transition block 12, and the switch-off block 13 facing the wheel center of the combined cam 10, and the clamping protrusions 14 are used for clamping with clamping grooves 21 formed on the outer circumferential surface of the cam core 20. Therefore, the connection block 11, the transition block 12 and the disconnection block 13 can be clamped and fixed with the cam core 20, the connection is reliable, and the separation is prevented. The clamping grooves 21 are through grooves formed in the outer peripheral wall of the cam core 20 in an axially concave mode, so that the connection blocks 11, the transition blocks 12 and the disconnection blocks 13 can be conveniently axially inserted or disassembled, the assembling and disassembling operation difficulty is reduced, and the structural change flexibility of the combined cam 10 is improved.

Further, in still other embodiments, the cam switch 100 further includes a snap ring 50, the snap ring 50 is sleeved outside the cam core 20, and the snap ring 50 is used for fixing the combined cam 10 to the cam core 20 in a clamping manner. Opposite ends of the clamping convex body 14 respectively extend out of the two opposite axial sides of the switch-on block 11, the transition block 12 and the switch-off block 13. Therefore, the clamping convex body 14 can be conveniently inserted into the holes of the cam core 20 and the cam cover 60, or the extending part is clamped and fixed by the clamping ring 50, and the assembly structure of all parts is stable and reliable.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A combination cam, comprising:

the connecting blocks are arranged in a plurality and can be detachably connected in a continuous mode along the circumferential direction, and the outer arc surfaces of the connecting blocks are spliced to form the concave edge surface of the combined cam; and

the break-off block module is detachably connected to the side part of the make-up block along the circumferential direction, and the outer arc surface of the break-off block module forms a flange surface of the combined cam.

2. The cam assembly of claim 1, wherein the break block module comprises at least two transition blocks, the transition blocks are detachably connected with the adjacent block, the extrados surfaces of at least two transition blocks are spliced to form the flange surface of the cam assembly, or;

the break-off block module comprises at least one transition block and at least one break-off block, at least one break-off block is detachably connected between two adjacent transition blocks in an adjoining mode, and the outer arc surface of the break-off block and the outer arc surface of the transition block are spliced to form a flange surface of the combined cam;

the transition block is provided with a transition arc surface, and the transition arc surface is smoothly connected with the outer arc surface of the connection block.

3. The combined cam according to claim 2, wherein the breaking block is provided with a first clamping groove and a first clamping hook, the transition block is provided with a second clamping groove and a second clamping hook, the first clamping hook is detachably clamped in the second clamping groove, and the second clamping hook is detachably clamped in the first clamping groove; or

And between two adjacent disconnecting blocks, two first clamping grooves and two first clamping hooks are respectively in one-to-one corresponding separable clamping connection.

4. The cam assembly of claim 3, wherein one of the break-away blocks is provided with two sets of the first engaging groove and the first engaging hook, and the two sets of the first engaging groove and the first engaging hook are arranged in a 180 ° rotational symmetric configuration along a radial center line of the break-away block.

5. The combined cam according to claim 2, wherein the connection block, the transition block and the disconnection block are provided with clamping convex bodies protruding towards one side of the wheel center of the combined cam, and the clamping convex bodies are used for being clamped with clamping grooves formed in the outer peripheral surface of the cam core.

6. The composite cam of claim 5 wherein opposite ends of said snap projection extend beyond axially opposite sides of said make block, said transition block and said break block, respectively.

7. The cam assembly of claim 1, wherein the cam assembly is provided in at least two, at least two cam assemblies are stacked in the axial direction and are both used for being fixedly connected to a rotating handle, and the flange surface and the concave surface of the cam assemblies in two adjacent layers are offset in the circumferential direction or aligned in the axial direction.

8. The combination cam of claim 1, wherein the combination cam includes at least two flange faces and at least two recess faces, the flange faces alternating with the recess faces one-to-one in a circumferential direction.

9. A cam switch, comprising:

rotating the handle;

the cam core is connected with the rotating handle;

the composite cam as claimed in any one of claims 1 to 8, which is fitted around the outside of the cam core;

a housing; and

the combined cam and the reset spring can respectively drive the sliding block to move so as to enable the first contact and the second contact to be disconnected or connected.

10. The cam switch of claim 9, further comprising a snap ring, wherein the snap ring is sleeved on the outer portion of the cam core, and the snap ring is used for fixing the combined cam clip on the cam core.

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