Electromagnet and color change seat

Abstract

The present application discloses an electromagnet and a color-changing seat, wherein the electromagnet includes a shell and a driving rod movably mounted in the shell, wherein the shell is provided with: a permanent magnet, a first winding and a second winding, which are used to form a corresponding magnetic field and are mutually connected to form a motion channel; a force-applying member, which is movably mounted in the motion channel, at least a part of which is magnetized by the permanent magnet and moves under the action of the first winding and / or the second winding; an upper limit seat and a lower limit seat, wherein the force-applying member has a first position that is against the upper limit seat and a second position that is against the lower limit seat; when the electromagnet is de-energized, the force-applying member can maintain its position under the action of the magnetic field of the permanent magnet, and the driving rod is movably mounted in the force-applying member, the force-applying member located in the first position allows the driving rod to move freely, and the force-applying member located in the second position limits the maximum upward stroke of the driving rod. The technical solution disclosed in the present application improves production efficiency by optimizing the internal structure of the electromagnet.

Description

Technical Field

[0001] The present application relates to the field of automation equipment, and in particular to an electromagnet and a color changing seat. Background Art

[0002] Flat knitting machines are a type of knitting machinery, generally referring to flat knitting machines, that is, machines that use horizontal knitting needle beds for knitting. Flat knitting machines include hand-cranked flat knitting machines, semi-automatic flat knitting machines, and computerized flat knitting machines according to their development. The color changer is one of the important accessories of the flat knitting machine.

[0003] The color-changing base is installed on the head part of the computerized flat knitting machine, and is used to select the required color of the yarn when the machine is weaving. Normally, when the head is running, the color-changing top rod extends downward to drive the required set of Usse seats for weaving, and when changing colors, the color-changing top rod retracts to release the set of Usse seats. Therefore, the working process of the color-changing base is the process of wear of the color-changing top rod and the color-changing base.

[0004] For example, a Chinese patent document with publication number CN208829863U discloses a new color-changing device, including an assembly block, an installation positioning block, a color-changing seat top block, a color-changing top rod, a bottom plate, a guide block, a tilting lever mechanism, an electromagnet assembly, a fixing frame and a fixing clamping plate. The bottom plate is provided with a movable groove, one end of the tilting lever mechanism is connected to the color-changing base, and the other end of the tilting lever mechanism is connected to the bottom end of the electromagnet assembly.

[0005] The inventors found that the existing color-changing seats usually include multiple color-changing mechanisms, which have complex structures, many exposed parts, and a bulky and unsightly appearance. At the same time, due to the large number of spare parts, the manufacturing cost is also high, and it is difficult and inconvenient to assemble and disassemble, resulting in a large amount of manpower waste. The movable connection structure is easily stuck, and it often needs to be shut down for maintenance, which reduces work efficiency. Summary of the invention

[0006] In order to solve the above technical problems, the present application discloses an electromagnet, comprising a housing and a driving rod movably mounted in the housing, wherein the housing is provided with:

[0007] The permanent magnet, the first winding and the second winding are used to form a corresponding magnetic field and are interconnected to form a motion channel;

[0008] A force applying member, movably installed in the motion channel, at least a portion of which is magnetized by the permanent magnet and moves under the action of the first winding and / or the second winding;

[0009] An upper limit seat and a lower limit seat, wherein the force applying member has a first position abutting against the upper limit seat and a second position abutting against the lower limit seat;

[0010] When the electromagnet is de-energized, the force-applying member can maintain its position under the action of the magnetic field of the permanent magnet, and the drive rod is movably installed in the force-applying member. The force-applying member located at the first position allows the drive rod to move freely, and the force-applying member located at the second position limits the maximum upward stroke of the drive rod.

[0011] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0012] Optionally, the top end of the driving rod protrudes out of the shell and is connected to an external device, and a reset member is provided between the top end and the shell, and the reset member drives the driving rod upward by its own elastic force.

[0013] Optionally, the shell includes an upper half shell and a lower half shell that are interlocked, the lower half shell at least wraps the permanent magnet, the first winding and the second winding, and the reset member is installed on the upper half shell.

[0014] Optionally, the bottom end of the driving rod protrudes out of the force-applying member and expands to form a limiting step. The bottom of the force-applying member is provided with a limiting edge that cooperates with the limiting step. The force-applying member is located in the second position, and the limiting edge is offset from the limiting step to limit the maximum upward stroke of the driving rod.

[0015] Optionally, the electromagnet further includes a winding support disposed in the shell, the winding support includes a cylinder for forming the movement channel, and in the axial direction, the first winding, the permanent magnet and the second winding are sequentially arranged on the outer circumferential surface of the cylinder.

[0016] Optionally, the upper limit seat and the lower limit seat are respectively arranged at two ends of the cylinder, and both protrude from the cylinder and cooperate with the shell; the driving rod passes through the upper limit seat, the force applying member and the lower limit seat.

[0017] Optionally, an upper through hole is opened at a position corresponding to the upper limit seat, and the top end of the driving rod cooperates with the reset member from the upper through hole; a lower through hole is opened at a position corresponding to the lower limit seat, and the bottom end of the driving rod is exposed to the lower through hole.

[0018] Optionally, one end of the lower limit seat is provided with a first clamping portion that cooperates with the lower through hole, and the other end extends to cooperate with the inner side wall of the cylinder; one end of the upper limit seat is provided with a second clamping portion that cooperates with the upper through hole, and the other end extends to cooperate with the inner side wall of the cylinder.

[0019] Optionally, the reset member is a compression spring wound around the drive rod, and an assembly chamber for accommodating at least a portion of the compression spring is provided in the second clamping portion.

[0020] The present application also discloses a color changing seat, comprising a plurality of electromagnets according to the above technical solution and a bracket for installing each electromagnet, the bracket being provided with a plurality of guide openings for sliding a driving block, the driving block being used to cooperate with a head component of a computer flat knitting machine to achieve color changing, and the top end of the driving rod of the electromagnet being directly connected to the driving block.

[0021] The technical solution disclosed in the present application realizes functions that cannot be realized by electromagnets in the prior art by optimizing the internal structure of the electromagnet, while optimizing the structure of the color-changing seat and improving production efficiency.

[0022] The specific beneficial technical effects will be further explained in the specific implementation methods in combination with specific structures or steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1a A schematic diagram of an electromagnet in an embodiment;

[0024] Figure 1b Schematic diagram of the internal structure of the electromagnet in 1a;

[0025] Figure 2a This is an internal assembly diagram of an electromagnet in one embodiment;

[0026] Figure 2b It is a schematic diagram of the coordination of the various parts of the electromagnet in 2a;

[0027] Figure 3a A schematic diagram of a bracket in an embodiment;

[0028] Figure 3b It is a schematic diagram of the local structure of the bracket in 3a;

[0029] Figure 3c A schematic diagram of the bracket in 3a from another perspective;

[0030] Figure 3d Schematic diagram of the relationship between the stent dimensions in 3a;

[0031] Figure 4a A schematic diagram of a color changing seat in an embodiment;

[0032] Figure 4b This is a schematic diagram of another corner of the color change seat in 4a.

[0033] The reference numerals in the figures are described as follows:

[0034] 1. Shell; 11. Upper half shell; 111. Upper through hole; 12. Lower half shell; 121. Lower through hole;

[0035] 2. driving rod; 21. driving block; 22. force application groove; 23. limiting step;

[0036] 3. Permanent magnet;

[0037] 4. Sports channel;

[0038] 5. Force applying member; 51. Limiting edge;

[0039] 6. Upper limit seat; 61. First guide portion; 62. Second clamping portion; 63. Assembly chamber;

[0040] 7. Lower limit seat; 71. First clamping portion; 72. Second guide portion;

[0041] 8. Reset parts;

[0042] 9. Winding support; 91. Cylinder; 92. First chamber; 93. Second chamber;

[0043] 10. Bracket; 101. Base plate; 102. Support plate; 103. Working surface; 104. Installation area; 105. Guide port; 1051. Stress dispersion hole; 106. Fixing ear. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0047] The concepts of up and down in this article are relative concepts and should be understood as the first direction and the second direction. Figure 1a , understood as attached Figure 1aThe upper and lower parts of the .

[0048] Reference Figure 1a To Attachment Figure 2b The present application discloses an electromagnet, comprising a housing 1 and a driving rod 2 movably mounted in the housing 1, wherein the housing 1 is provided with:

[0049] The permanent magnet 3, the first winding (not shown) and the second winding (not shown) are used to form a corresponding magnetic field and are interconnected to form a motion channel 4;

[0050] A force applying member 5 is movably installed in the motion channel 4, at least a part of the force applying member 5 is magnetized by the permanent magnet 3 and moves under the action of the first winding and / or the second winding;

[0051] The upper limit seat 6 and the lower limit seat 7, the force applying member 5 has a first position against the upper limit seat 6 (reference Figure 1b As shown) and a second position against the lower limit seat 7;

[0052] When the electromagnet is de-energized, the force-applying member 5 can maintain its position under the action of the magnetic field of the permanent magnet 3. The driving rod 2 is movably installed in the force-applying member 5. The force-applying member 5 in the first position allows the driving rod 2 to move freely, and the force-applying member 5 in the second position limits the maximum upward stroke of the driving rod 2.

[0053] The force applying member 5 is the main active driving component of the electromagnet, which responds to the change of the magnetic field and moves or maintains its own position according to the different superposition forms of the magnetic field under the cooperation of the first winding, the second winding and the permanent magnet.

[0054] In terms of holding, the parts corresponding to the force-applying member 5 and the permanent magnet will be magnetized and attracted by the permanent magnet, thereby achieving a certain holding torque. In terms of movement, the parts corresponding to the force-applying member 5 and the permanent magnet will be magnetized to correspond to the magnetic field changes of the first winding or the second winding, generate a movement trend and overcome the holding torque mentioned above.

[0055] It is not difficult to understand that in order to achieve the above functions, the force-applying member 5 at least has the physical and chemical properties of being easily magnetized and easily demagnetized. In this field, the common material is iron alloy. Similarly, in this embodiment, the drive rod 2 and the force-applying member 5 are movable assembly components. Therefore, in terms of material, the drive rod 2 should be made of at least a material that is not easily magnetized (preferably not magnetized) to reduce the influence of the magnetic field of the first winding, the second winding and the permanent magnet on the movement of the drive rod 2.

[0056] The working conditions of the electromagnet are often related to the requirements of the equipment in which it is located. Referring to an embodiment, the top end of the driving rod 2 protrudes out of the shell 1 and is connected to the external equipment. A reset member 8 is provided between the top end and the shell 1, and the reset member 8 drives the driving rod 2 upward by its own elastic force. In this embodiment, the reset action of the driving rod 2 is realized by the reset member 8, and the driving effect of the reset member 8 will be constrained by the force member 5. When the force member 5 is in the second position, the driving effect of the reset member 8 will be restrained by the force member 5; when the force member 5 is in the first position, the movement stroke of the driving rod 2 is released, and the driving effect of the reset member 8 can be realized. Compared with the setting in which the winding realizes the reset of the driving elastic member in the conventional electromagnet, the difference of the technical solution in this embodiment is that it can maintain a certain state in the power-off state. In the prior art, in order to realize the reset of the electromagnet by the elastic member, the core assembly needs to be able to move freely after the power is lost. The technical solution in this embodiment cleverly separates the two components of the core assembly, namely the force-applying member 5 and the driving rod 2, so that a certain degree of free movement of the driving rod 2 can be achieved while maintaining positioning when power is off (the free movement range of the driving rod 2 depends on the position of the force-applying member 5).

[0057] If the electromagnet in this embodiment is understood in conjunction with the reset member 8, it can also be understood from the perspective of the core assembly alone. The present application also discloses the core assembly of the electromagnet, including a lower limit seat 7, a force member 5, an upper limit seat 6 and a reset member 8, through which the driving rod 2 and the driven rod 2 pass in sequence; the upper limit seat 6 and the lower limit seat 7 limit the movement stroke of the force member 5, and the force member 5 moves under the action of the winding of the electromagnet, and the force member 5 acts on the bottom end of the driving rod 2 to drive the driving rod 2 downward; the reset member 8 is arranged between the top of the force member 5 and the upper limit seat 6 and is used to drive the driving rod 2 upward.

[0058] Compared with the prior art, the core structure in this embodiment separates the components that act on the magnetic field from the components connected to external devices, thereby forming a unidirectional transmission structure inside the electromagnet, thereby better adapting to the usage requirements under specific working conditions.

[0059] In the specific transmission structure setting, referring to one embodiment, a driving block 21 that cooperates with an external device is installed at the top of the driving rod 2, and the reset member 8 is a compression spring wound around the driving rod 2, which is pressed between the driving block 21 and the upper limit seat 6 respectively.

[0060] The setting of the compression spring can ensure the stable reset of the driving rod 2, thereby improving the stability of the operation of the core assembly. The driving block 21 and the driving rod 2 can be an integral part, for example, formed by the expansion of the top end of the driving rod 2. As shown in the accompanying drawings, the top end of the driving rod 2 and the driving block 21 are threadedly matched, and the bottom end of the driving rod 2 is provided with a force application groove 22 for driving its own rotation, and the force application groove 22 is connected to the external environment through the lower limit seat 7.

[0061] The force-applying groove 22 can realize multiple functions. During the assembly of the drive rod 2, the force-applying groove 22 can realize the rotation of the drive rod 2 to achieve threaded cooperation with the drive block 21; during use, the force-applying groove 22 can be used to reversely drive the force-applying member 5 through the drive rod 2 to change the holding position of the force-applying member 5, thereby realizing manual change of the operating state of the electromagnet. The main reason for this setting is that the holding position of the force-applying member 5 affects the movement stroke of the drive rod 2. Referring to an embodiment, the force-applying member 5 has a first position that is against the upper limit seat 6 and a second position that is against the lower limit seat 7; the bottom end of the drive rod 2 protrudes out of the force-applying member 5 and expands to form a limit step 23, and the bottom of the force-applying member 5 is provided with a limit edge 51 that cooperates with the limit step 23, and the force-applying member 5 is located at the second position, and the limit edge 51 is against the limit step 23 to limit the maximum upward stroke of the drive rod 2.

[0062] In conjunction with the above description of the function of the force-applying groove 22, it is not difficult to understand that the force-applying member 5 and the driving rod 2 have the following matching relationship:

[0063] When the electromagnetic power is off and there is no external force:

[0064] The force-applying member 5 can self-maintain its position due to the magnetism of the permanent magnet 3. When the force-applying member 5 is located at the first position, the driving rod 2 can move through the entire stroke and move to the uppermost position under the action of the reset member 8. When the force-applying member 5 is located at the second position, the driving rod 2 is maintained at the lower position under the action of the limiting edge 51, especially at the corresponding position where the force-applying member 5 and the lower limiting seat 7 are against each other, and the reset member 8 is compressed at the same time.

[0065] The electromagnetic is de-energized but under the action of external force: when the external force drives the driving rod 2 to move upward and the torque is greater than the holding torque of the force-applying member 5, the force-applying member 5 moves upward to release the movement stroke of the driving rod 2; when the external force drives the driving rod 2 to move downward, the driving rod 2 will overcome the elastic movement of the reset member 8 until the driving block 21 abuts against the upper limit seat 6;

[0066] When the electromagnetic is energized and there is no external force: the force-applying member 5 moves accordingly under the action of the magnetic field of the first winding or the second winding, thereby entering the first position or the second position, and correspondingly releasing or limiting the movement stroke of the driving rod 2.

[0067] On the basis of ensuring the above functions, the coordination of each component can be reasonably optimized. Referring to an embodiment, the cavity diameter of the through hole in the force member 5 for the driving rod 2 to pass through is smaller than the cavity diameter of the through hole in the lower limit step 23 for the driving rod 2 to pass through. In actual products, the spatial difference between the two is expressed as the limit edge 51, and the limit edge 51 should be expressed as a direction perpendicular to the cloud top of the driving rod 2 or the force member 5 in design principle to obtain a better limit coordination effect.

[0068] It is not difficult to understand that the movement stroke of the driving rod 2 is affected by the force member 5, and the movement stroke of the force member 5 is limited by the upper limit seat 6 and the lower limit seat 7. In terms of the matching relationship between the force member 5 and the upper limit seat 6, referring to one embodiment, a first guide portion 61 is provided on the side of the upper limit seat 6 facing the force member 5, and the upper end of the force member 5 cooperates with the first guide portion 61 and abuts against the upper limit seat 6. The function of the first guide portion 61 is to optimize the matching effect between the force member 5 and the upper limit seat 6. Specifically, the first guide portion 61 is truncated cone-shaped and the demolding direction is toward the force member 5. The shape of the upper end of the force member 5 is complementary to the shape of the first guide portion 61. In a specific position, at least a portion of the first guide portion 61 is located inside the upper end of the force member 5. The complementary shape structure can achieve stable matching between the two, thereby ensuring the overall stability of the operation of the core structure.

[0069] Similar to the force-applying member 5 and the upper limit seat 6, a guide structure may also be provided between the force-applying member 5 and the lower limit seat 7. Referring to one embodiment, a second guide portion 72 is provided on the side of the lower limit seat 7 facing the force-applying member 5, and the upper end of the force-applying member 5 cooperates with the second guide portion 72 to abut against the lower limit seat 7. Similarly, the lower end of the force-applying member 5 is truncated cone-shaped and the demolding direction faces the second guide portion 72. The shape of the second guide portion 72 is complementary to the shape of the lower end of the force-applying member 5. At a specific position, at least a portion of the lower end of the force-applying member 5 is located in the second guide portion 72.

[0070] The draft setting parameters of the first guide portion 61 and the second guide portion 72 may be the same or different to achieve different effects.

[0071] In terms of the specific matching relationship of the motion stroke, referring to an embodiment, the gap between the driving block 21 and the upper limit seat 6 is the maximum downward stroke of the driving rod 2, and the motion stroke of the force-applying member 5 is less than the maximum downward stroke. The downward motion stroke of the force-applying member 5 is the downward stroke of the driving rod 2, and the maximum downward stroke of the driving rod 2 affects the setting of the reset member 8. The matching relationship in this embodiment can structurally avoid mutual interference between components, and at the same time, the motion stroke gap between the components can be overcome by the elasticity of the reset member 8 to avoid gaps or shaking.

[0072] In addition to optimizing the core structure, the electromagnet in the present application also has highlights from the overall perspective of the electromagnet. Referring to an embodiment, the housing 1 includes an upper half shell 11 and a lower half shell 12 that are interlocked, the lower half shell 12 at least encloses the permanent magnet 3, the first winding and the second winding, and a reset member 8 is installed on the upper half shell 11.

[0073] The lower half shell 12 of the semi-enclosed structure can provide a stable working environment and is easy to assemble. In a specific product, the side of the lower half shell 12 is open to facilitate the installation of the core assembly and the winding, and is conducive to heat dissipation.

[0074] In terms of the winding setting, referring to one embodiment, the electromagnet also includes a winding bracket 9 arranged in the shell 1, and the winding bracket 9 includes a cylinder 91 for forming a movement channel 4. In the axial direction, the outer peripheral surface of the cylinder 91 is sequentially arranged with a first winding, a permanent magnet 3 and a second winding.

[0075] The two ends of the winding bracket 9 are against the shell 1 to form a relatively closed first chamber 92 and a second chamber 93. The first chamber 92 is used to accommodate the first winding, and the second chamber 93 is used to accommodate the second winding. A relatively closed third chamber is provided between the first chamber 92 and the second chamber 93, and the third chamber is used to accommodate the permanent magnet 3. The first chamber 92, the second chamber 93 and the third chamber are independent of each other to ensure the stable operation of each winding.

[0076] In assembly, referring to one embodiment, the upper limit seat 6 and the lower limit seat 7 are respectively arranged at the two ends of the cylinder 91, and both protrude from the cylinder 91 and cooperate with the shell 1; the driving rod 2 passes through the upper limit seat 6, the force applying member 5 and the lower limit seat 7.

[0077] The upper limit seat 6 and the lower limit seat 7 can improve the positioning effect of the winding support 9 and the housing 1 in the radial direction of the movement direction of the driving rod 2, ensure the concentricity of the movement channel 4, and the smooth and stable operation of the core assembly. Further, the housing 1 and the upper limit seat 6 are provided with an upper through hole 111 at the corresponding position, and the top end of the driving rod 2 cooperates with the reset member 8 from the upper through hole 111; the housing 1 and the lower limit seat 7 are provided with a lower through hole 121 at the corresponding position, and the bottom end of the driving rod 2 is exposed to the lower through hole 121.

[0078] The upper through hole 111 and the lower through hole 121 allow the driving rod 2 to move, while also realizing the assembly of the upper limit seat 6 and the lower limit seat 7 with the housing 1. In the axial direction, the components are mutually engaged, and the structure is stable. Under the encirclement and wrapping of the housing 1, the components can limit each other to avoid unnecessary misalignment, and further improve the concentricity of the motion channel 4. In terms of specific settings, referring to an embodiment, one end of the lower limit seat 7 is provided with a first engaging portion 71 that cooperates with the lower through hole 121, and the other end extends to the inner side wall of the cylinder 91 for cooperation; one end of the upper limit seat 6 is provided with a second engaging portion 62 that cooperates with the upper through hole 111, and the other end extends to the inner side wall of the cylinder 91 for cooperation.

[0079] In the assembly of the reset member 8, referring to an embodiment, the reset member 8 is a compression spring wound around the driving rod 2, and an assembly chamber 63 for accommodating at least a part of the compression spring is provided in the second clamping portion 62. The assembly chamber 63 can improve the assembly effect of the reset member 8 and improve stability.

[0080] In terms of the specific driving form, referring to one embodiment, the bottom end of the driving rod 2 protrudes out of the force-applying member 5 and expands to form a limiting step 23. The bottom of the force-applying member 5 is provided with a limiting edge 51 that cooperates with the limiting step 23. When the force-applying member 5 is located in the second position, the limiting edge 51 is abutted against the limiting step 23 to limit the maximum upward stroke of the driving rod 2.

[0081] As for the specific position and matching relationship, please refer to the detailed description of the matching relationship between the force applying member 5 and the driving rod 2 above, which will not be repeated here.

[0082] The electromagnet of the present application is originally designed to be used on a color changing seat. In order to realize its function, a bracket 10 matching the application scenario is required to realize the installation of the electromagnet. Figure 3a To Attachment Figure 3d The present application also discloses a bracket 10 applied to a color changing seat, wherein the bracket 10 includes a base plate 101 and a support plate 102 which is arranged non-coplanar with the base plate 101, wherein the upper end of the support plate 102 is folded to form a working surface 103, and the working surface 103 and the base plate 101 are enclosed to form an electromagnet installation area 104, and a plurality of guide openings 105 for sliding a driving block 21 are provided on the working surface 103, and the driving block 21 is used to cooperate with the head component of the computer flat knitting machine to realize color changing, and the top end of the driving rod 2 of the electromagnet is directly connected to the driving block 21.

[0083] The arrangement of directly connecting the driving rod 2 of the electromagnet with the driving block 21 avoids the complicated transmission relationship in the prior art, greatly improves the transmission efficiency and effectively reduces the failure rate, and has extremely high promotion value.

[0084] In the specific configuration of the bracket 10, referring to an embodiment, the side of the installation area 104 facing away from the working surface 103 is open. The open installation area 104 is convenient for the installation of the electromagnet, and the open space is also an operation port, which is convenient for the operator to operate the driving rod 2 through this position to realize manual operation of the electromagnet.

[0085] Regarding the specific form of the installation area 104 , referring to one embodiment, in the cross section, the substrate 101 , the support plate and the working surface 103 together form a C-shape and the opening of the C-shape is the installation area 104 , and the driving block 21 passes through the guide opening 105 through the working surface 103 and extends to the outside of the installation area 104 .

[0086] The semi-enclosed installation area 104 can facilitate installation while preventing foreign matter from causing unnecessary influence on the operation of the electromagnet.

[0087] To improve the stability of the installation, refer to the attached Figure 3dIn the disclosed embodiment, the base plate 101 is provided with fixing ears 106 extending to both sides of the mounting area 104 . Compared with the plane where the support plate 102 is located, the extension length D1 of the fixing ears 106 is approximately equal to the extension length D2 of the working surface 103 .

[0088] The support plate 102 may vibrate due to the operation of the electromagnet, and the provision of the fixing ears 106 can effectively overcome this problem.

[0089] It is not difficult to understand from the above that, referring to one embodiment, the bracket 10 is an integral structure and includes at least two bending parts, one of which is located between the support plate 102 and the working surface 103 , and the other is located between the support plate 102 and the substrate 101 .

[0090] The bracket 10 can be formed by bending an integral plate material, thereby reducing production costs.

[0091] In terms of specific proportional relationship, referring to an embodiment, the ratio of the width L1 of the mounting area 104 to the width L2 of the substrate 101 is 0.2 to 0.5. If the ratio is too large, the supporting effect of the substrate 101 for the electromagnet will be reduced, and if the ratio is too small, the size of the mounting area 104 will be limited. Therefore, the values ​​in this embodiment provide a reasonable preferred range.

[0092] Referring to an embodiment, the ratio of the width L1 to the height H1 of the installation area 104 is 0.2 to 0.5. If the ratio is too large, the installation area 104 will be too large, which is not conducive to the miniaturization of the entire device. If the ratio is too small, the size of the installation area 104 will be limited, which is not conducive to the setting of the electromagnet. Therefore, the values ​​in this embodiment provide a reasonable preferred range.

[0093] In terms of installation details, referring to an embodiment, a mounting position for installing the electromagnet is provided on the support plate 102, and the support plate 102 is perpendicular or nearly perpendicular to the base plate 101. The connection between the support plate 102 and the electromagnet can be achieved by fasteners to achieve the installation of the housing 1 and the support plate 102. In terms of the specific installation method, referring to an embodiment, the electromagnet is connected to the mounting position by fasteners, and the fasteners are installed via the side of the support plate 102 facing away from the installation area 104. The side facing away from the installation area 104 has ample space, which is convenient for operation and is conducive to improving production and assembly efficiency.

[0094] Regarding the details of the guide opening 105, referring to an embodiment, the guide opening 105 is rectangular and the four corners of the rectangle are provided with stress dispersion holes 1051. The stress dispersion holes 1051 can prevent the movement of the driving block 21 from causing stress concentration in the guide opening 105, thereby improving the overall life of the product.

[0095] Based on the above, it is not difficult to understand. Figure 4a To Attachment Figure 4bThe present application also discloses a color changing seat, including a plurality of electromagnets in the above technical solution and a bracket 10 for mounting each electromagnet. The bracket 10 is provided with a plurality of guide openings 105 for sliding a driving block 21. The driving block 21 is used to cooperate with the head component of the computer flat knitting machine to achieve color changing. The top end of the driving rod 2 of the electromagnet is directly connected to the driving block 21.

[0096] The color-changing seat disclosed in the present application can be formed by combining the features of the various technical solutions described above. The specific technical effects can be found in the specific description above and will not be repeated here.

[0097] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0098] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. An electromagnet, comprising a housing and a driving rod movably mounted in the housing, characterized in that: The housing is provided with: The permanent magnet, the first winding and the second winding are used to form a corresponding magnetic field and are interconnected to form a motion channel; A force applying member, movably installed in the motion channel, at least a portion of which is magnetized by the permanent magnet and moves under the action of the first winding and / or the second winding; An upper limit seat and a lower limit seat, the force-applying member has a first position abutting against the upper limit seat and a second position abutting against the lower limit seat, the bottom end of the driving rod protrudes out of the force-applying member and expands to form a limit step, the bottom of the force-applying member is provided with a limit edge cooperating with the limit step, the force-applying member is located below the second position, and the limit edge abuts against the limit step to limit the maximum upward travel of the driving rod; A winding support is arranged in the shell, the winding support includes a cylinder for forming the movement channel, the first winding, the permanent magnet and the second winding are arranged in sequence on the outer circumferential surface of the cylinder in the axial direction, the upper limit seat and the lower limit seat are respectively arranged at both ends of the cylinder, and both protrude from the cylinder and cooperate with the shell; the driving rod passes through the upper limit seat, the force applying member and the lower limit seat; When the electromagnet is de-energized, the force-applying member can maintain its position under the action of the magnetic field of the permanent magnet, and the drive rod is movably installed in the force-applying member. The force-applying member located at the first position allows the drive rod to move freely, and the force-applying member located at the second position limits the maximum upward stroke of the drive rod.

2. The electromagnet according to claim 1, characterized in that The top end of the driving rod protrudes out of the shell and is connected to an external device. A reset member is provided between the top end and the shell. The reset member drives the driving rod upward by its own elastic force.

3. The electromagnet according to claim 2, characterized in that The shell includes an upper half shell and a lower half shell that are buckled with each other, the lower half shell at least wraps the permanent magnet, the first winding and the second winding, and the reset member is installed on the upper half shell.

4. The electromagnet according to claim 3, characterized in that An upper through hole is opened at the corresponding position between the shell and the upper limit seat, and the top end of the driving rod cooperates with the reset member from the upper through hole; a lower through hole is opened at the corresponding position between the shell and the lower limit seat, and the bottom end of the driving rod is exposed to the lower through hole.

5. The electromagnet according to claim 4, characterized in that One end of the lower limit seat is provided with a first clamping portion that cooperates with the lower through hole, and the other end extends to cooperate with the inner side wall of the cylinder; one end of the upper limit seat is provided with a second clamping portion that cooperates with the upper through hole, and the other end extends to cooperate with the inner side wall of the cylinder.

6. The electromagnet according to claim 5, characterized in that The reset member is a compression spring wound around the driving rod, and an assembly chamber for accommodating at least a part of the compression spring is provided in the second clamping portion.

7. Color changing seat, characterized in that, It comprises a plurality of electromagnets according to any one of claims 1 to 6 and a bracket for mounting each electromagnet, the bracket being provided with a plurality of guide openings for sliding a driving block, the driving block being used to cooperate with a head component of a computer flat knitting machine to achieve color changing, and the top end of the driving rod of the electromagnet being directly connected to the driving block.

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