Compressed spring of push rod type subminiature electromagnetic relay
By setting protrusions in the through holes of the compression springs, the through holes are separated into anti-embedding spaces, and the problem of multiple compression springs nesting each other is solved, achieving an anti-embedding effect that does not affect the pressure of the compression spring.
Patent Information
- Application Number
- CN202421250872.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The compression springs of the existing push rod type ultra-small electromagnetic relay are easily nested with each other when multiple compression springs vibrate together, resulting in the inability to separate the material.
At least one protrusion is provided in the through hole of the compression spring in the first direction, one end of the protrusion is fixed to the inner wall of the through hole, and the gap between the other end and the opposite hole wall is used to separate the through hole into an inner pair. The anti-embedded spaces with both corner lines smaller than L2 and L3.
By setting up a projection, the pressure springs are prevented from nesting each other, keeping the structure simple and not affecting the pressure of the pressure spring itself, ensuring that the pressure spring can be dispensed normally.
Smart Images
Figure CN222530331U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of push rod type ultra-small electromagnetic relays, in particular to a compression spring of a push rod type ultra-small electromagnetic relay. Background Art
[0002] like Figure 1 As shown, the working principle of the existing push rod type ultra-small electromagnetic relay is that when current is applied to both ends of the coil lead pin, the coil excitation current will generate magnetic flux, which passes through the magnetic circuit composed of the iron core, armature 3, yoke 4, compression spring 2 and working air gap, and generates electromagnetic attraction in the working air gap. When the excitation current rises to a certain value, the electromagnetic attraction torque will overcome the counter torque of the moving spring to rotate the armature 3, drive the push card 5 to push the moving spring, and close the moving contact and the normally open static contact; when the excitation current decreases to a certain value, the counter torque of the moving spring is greater than the electromagnetic attraction torque, the armature 3 returns to the initial state, and the moving contact is disconnected from the normally open static contact.
[0003] Among them, the compression spring 2 in the relay plays the role of pressing the armature 3 to prevent it from moving up and down. Since the armature 3 is relatively large in width, in order to ensure that the armature 3 can be neither separated from the yoke 4 nor separated from the left and right sides during the process of attraction and release, the compression spring 2 is pressed not too far from the two ends of the armature 3. Therefore, the compression spring 2 must have sufficient width, but too large a width will lead to excessive pressure, resulting in excessive force on the armature 3, inflexible rotation, and increased wear. Therefore, a hole is opened in the middle of the compression spring 2, such as Figure 2 , Figure 3 As shown, a through hole 23 is provided in the middle of the compression spring 2 to ensure that both ends of the armature 3 are pressed and the pressure of the compression spring 2 is reduced.
[0004] Specifically, the compression spring 2 includes a free section 22 for positioning the free armature 3 and a fixed section 21 for connecting with the base 1. The fixed section 21 is in the shape of a long strip, and has two ends with connecting sections 211 bent downward. The free section 22 includes a parallel section 221 and an inclined section 222. One end of the parallel section 221 is connected to the fixed section 21, and the other end is connected to the inclined section 222 inclined downward. The free section 22 is provided with a through hole 23 running through the upper and lower ends thereof. The through hole 23 corresponds to the shape of the free section 22, and the through hole 23 includes a parallel section through hole 231 and an inclined section through hole 232.
[0005] like Figure 1 — Figure 5 As shown, the first direction corresponds to the X-axis direction in the figure, and also corresponds to the left-right direction in the figure. The second direction corresponds to the Y-axis direction in the figure, and also corresponds to the front-back direction in the figure. The third direction corresponds to the Z-axis direction in the figure, and also corresponds to the up-down direction in the figure.
[0006] In actual use, the through hole is a long hole, and the straight-line distance between its farthest two ends is L1; the size of the connecting section in the first direction is L2, and the size of the free section in the second direction is L3. L2 is smaller than L1, and L3 is also smaller than L1;
[0007] When many compression springs 2 are put together for vibration feeding, the end of the connecting section 211 or the free section 22 of the fixed section 21 will be embedded in the through hole 23 in the middle of another compression spring 2; Figure 6 As shown, when many compression springs 2 are put together for vibration feeding, the connecting section 211 of the fixed section 21 will be embedded in the middle through hole 23 of another compression spring 2, causing many compression springs 2 to be entangled with each other, making it impossible to separate the materials. Summary of the invention
[0008] The utility model aims to provide a push rod type subminiature electromagnetic relay compression spring which has a simple structure, does not affect the pressure of the compression spring itself and can prevent the compression springs from being nested with each other, in view of the shortcomings of the prior art.
[0009] The technical purpose of the utility model is achieved through the following technical solutions:
[0010] A compression spring of a push rod type ultra-small electromagnetic relay, comprising a free section for positioning a free armature and a fixed section for connecting to a base, wherein both ends of the fixed section are provided with connecting sections bent downward; the free section is provided with a through hole running through its upper and lower ends; the through hole is a long hole, and the straight-line distance between its farthest ends is L1; the size of the connecting section in the first direction is L2; the size of the free section in the second direction is L3; the size of the connecting section in the second direction is H1; the size of the free section in the third direction is H2; at least one protrusion is provided in the through hole along the first direction; one end of the protrusion is fixed on the inner wall of the through hole, and the other end thereof is gap-fitted with the opposite hole wall; the protrusion is used to divide the through hole into anti-embedding spaces whose inner diagonal length dimensions are both smaller than L2 and L3.
[0011] The gap distance between the protrusion and the opposite hole wall is smaller than H1 and H2; when L1 is larger than L2 and L3, and smaller than twice L2 and L3, there is at least one protrusion; the protrusion divides the through hole into at least two anti-embedding spaces and the inner diagonal lengths of the anti-embedding spaces are smaller than L2 and L3.
[0012] The gap distance between the protrusion and the opposite hole wall is smaller than H1 and H2; when L1 is greater than twice L2 and L3, there are multiple protrusions, which divide the through hole into multiple anti-embedding spaces and the inner diagonal lengths of the anti-embedding spaces are smaller than L2 and L3.
[0013] The gap distance between the protrusion and the opposite hole wall is greater than H1 and H2; when L1 is greater than H1 and H2, and less than twice H1 and H2, the protrusions are grouped in two, and the two protrusions are arranged opposite and adjacent to each other;
[0014] At least one group of protrusions is arranged in the through hole, and the group of protrusions divides the through hole into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are both smaller than L2 and L3.
[0015] When L1 is greater than twice H1 and H2, the protrusions are in multiple groups, and the multiple groups of protrusions divide the through hole into multiple anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all smaller than L2 and L3.
[0016] The protrusion is in the shape of an elongated strip.
[0017] The free section includes a parallel section and an inclined section. The through hole of the free section corresponds to the shape of the free section. The through hole includes a parallel section through hole and an inclined section through hole. The protrusion is arranged in the parallel section through hole and / or the inclined section through hole.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] 1. The utility model provides at least one protrusion in the through hole of the compression spring along the first direction, one end of the protrusion is fixed on the inner wall of the through hole, and the other end thereof is in clearance fit with the opposite hole wall; the protrusion is used to divide the through hole into anti-embedding spaces whose inner diagonal lengths are both smaller than L2 and L3. The utility model has the advantages of simple structure, no influence on the pressure of the compression spring itself, and can prevent the compression springs from being nested with each other.
[0020] 2. The gap distance between the protrusion and the opposite hole wall of the utility model is smaller than H1 and H2; when L1 is larger than L2 and L3, and smaller than twice L2 and L3, there is at least one protrusion; the protrusion divides the through hole into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are smaller than L2 and L3. This technical measure has the advantages of simple structure, no influence on the pressure of the compression spring itself, and can prevent the compression springs from being nested with each other.
[0021] 3. The gap distance between the protrusion and the opposite hole wall of the utility model is greater than H1 and H2; when L1 is greater than L2 and L3, and less than twice L2 and L3, two protrusions form a group, and the two protrusions are arranged opposite and adjacent to each other; at least one group of protrusions is arranged in the through hole, and the protrusions divide the through hole into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all less than L2 and L3. With this technical measure, when the gap distance between the protrusion and the opposite hole wall is greater than H1 and H2; the two protrusions are arranged opposite and adjacent to each other to form a staggered structure, which can mutually close the gap between the protrusion and the opposite hole wall, thereby preventing the ends of the connecting section and the free section from being stuck in the gap between the protrusion and the opposite hole wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of an existing push rod type ultra-small electromagnetic relay;
[0023] Figure 2 yes Figure 1 A top view of
[0024] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle compression spring;
[0025] Figure 4 yes Figure 3 Top view;
[0026] Figure 5 yes Figure 4 Middle AA view;
[0027] Figure 6 It is a schematic diagram of two compression springs intertwined with each other;
[0028] Figure 7 It is a structural schematic diagram of the utility model;
[0029] Figure 8 yes Figure 7 Middle BB view;
[0030] Fig. 9 yes Figure 7 Another structural diagram of ;
[0031] Fig.10 It is another structural schematic diagram of the utility model;
[0032] Fig.11 yes Fig.10 Middle CC view;
[0033] Fig.12 yes Fig.10 Another structural diagram of ;
[0034] Figure numerals: 1—base; 2—compression spring; 21—fixed section; 211—connecting section; 22—free section; 221—parallel section; 222—inclined section; 23—through hole; 231—parallel section through hole; 232—inclined section through hole; 241—first protrusion; 242—second protrusion; 3—armature; 4—yoke; 5—push card. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0038] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0039] Example 1
[0040] like Figure 1 — Fig. 9As shown, a compression spring of a push rod type subminiature electromagnetic relay includes a free section 22 for positioning a free armature 3 and a fixed section 21 for connecting with a base 1, and the two ends of the fixed section 21 are provided with a downwardly bent connecting section 211; the free section 22 is provided with a through hole 23 penetrating the upper and lower ends thereof; the through hole 23 is a long hole, and the straight-line distance between the farthest two ends thereof is L1; the size of the connecting section 211 in the first direction is L2; the size of the free section 22 in the second direction is L3; the size of the connecting section 211 in the second direction is H1; the size of the free section 22 in the third direction is H2; at least one protrusion is provided in the through hole 23 along the first direction; one end of the protrusion is fixed on the inner wall of the through hole 23, and the other end thereof is in clearance fit with the opposite side hole wall; the protrusion is used to divide the through hole 23 into an anti-embedding space whose inner diagonal length dimensions are both smaller than L2 and L3. In actual use, the through hole 23 is a long hole, and the anti-embedding space formed after the protrusion is provided is square, and the maximum length in the anti-embedding space is the inner diagonal length of the anti-embedding space. By providing the protrusions, the through hole 23 is divided into anti-embedding spaces whose inner diagonal lengths are smaller than L2 and L3. This technical measure has the advantages of simple structure, no influence on the pressure of the compression spring 22 itself, and preventing the compression springs 22 from being nested with each other.
[0041] like Figure 1 — Fig. 9 As shown, the first direction corresponds to the X-axis direction in the figure, and also corresponds to the left-right direction in the figure. The second direction corresponds to the Y-axis direction in the figure, and also corresponds to the front-back direction in the figure. The third direction corresponds to the Z-axis direction in the figure, and also corresponds to the up-down direction in the figure.
[0042] In actual use, the gap distance between the first protrusion 241 and the opposite hole wall is smaller than H1 and H2. The size of the connecting section 211 in the second direction is H1; the size of the free section 22 in the third direction is H2. One end of the first protrusion 241 is fixed on the inner wall of the through hole 23, and the other end thereof is fitted with a gap between the opposite hole wall, and the gap distance is smaller than H1 and H2. The use of this technical measure does not affect the pressure of the compression spring 2 itself, and can prevent the ends of the connecting section 211 and the free section 22 of the compression spring 2 from entering the gap.
[0043] like Figure 7 — Fig. 9As shown; when L1 is greater than L2 and L3, and less than twice L2 and L3, there is at least one protrusion. In this embodiment, the protrusion is a first protrusion 241, and there is at least one first protrusion 241; the first protrusion 241 divides the through hole 23 into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are both less than L2 and L3. The main body of the fixed section 21 is in the shape of a long strip, and a downwardly bent connecting section 211 is provided at both ends thereof. The straight-line distance between the farthest ends of the through hole 23 on the free section 22 is L1; the size of the connecting section 211 in the first direction is L2; and the size of the free section 22 in the second direction is L3. L1 is greater than L2 and L3. In order to reduce the length of L1, that is, to reduce the length of the space that can be inserted by the ends of the connecting section 211 and the free section 22, while not affecting the pressure of the compression spring 2 itself, at least one protrusion is added to the original through hole 23 to divide the through hole 23 into two anti-embedding spaces, each of which has an inner diagonal length less than L2 and L3. This technical measure can prevent the compression springs 2 from being nested with each other.
[0044] Specifically, the free section 22 includes a parallel section 221 and an inclined section 222. One end of the parallel section 221 is connected to the fixed section 21, and the other end thereof is connected to the inclined section 222 which is inclined downwardly arranged. The through hole 23 of the free section 22 corresponds to the shape of the free section 22, and the through hole 23 includes a parallel section through hole 231 and an inclined section through hole 232. The protrusion includes a long strip-shaped first protrusion 241 arranged in the parallel section through hole 231. One end of the first protrusion 241 is fixed on the inner wall of the parallel section through hole 231; the end of the other end thereof extends in the second direction, and the end is gap-matched with the opposite side hole wall, and the gap distance is less than H1 and H2. The size of the connecting section 211 in the second direction is H1, and the size of the free section 22 in the third direction is H2. The first protrusion 241 divides the through hole 23 into a first anti-embedding space near the fixed section 21 and a second anti-embedding space near the inclined section through hole 232; the inner diagonal lengths of the first anti-embedding space and the second anti-embedding space are smaller than L2 and L3. In actual use, the first protrusion 241 can also be set in the inclined section through hole 232. There can also be multiple protrusions, and by setting multiple protrusions, the through hole 23 is further divided into anti-embedding spaces with smaller inner diagonal lengths.
[0045] In actual use, the protrusion is a long strip as a whole, and may also be an arch or trapezoid, etc. The protrusion structure is small and does not affect the pressure of the compression spring 22 itself.
[0046] like Fig. 9 As shown, the gap distance between the protrusion and the opposite hole wall is smaller than H1 and H2; when L1 is greater than twice H1 and H2; there are multiple protrusions, the protrusions divide the through hole 23 into multiple anti-embedding spaces and the inner diagonal lengths of the anti-embedding spaces are all smaller than H1 and H2.
[0047] Specifically, the protrusion includes two first protrusions 241, and the first protrusions 241 are respectively arranged in the parallel section through hole 231 and the inclined section through hole 232. The two first protrusions 241 divide the through hole 23 into three anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all smaller than H1 and H2. In actual use, the first protrusions 241 can be staggered, parallel, etc., and the number thereof can be three, four or more according to the actual length of the through hole 23; at the same time, the first protrusions 241 are arranged according to the overall length of the through hole 23, the length of the parallel section through hole 231, and the length of the inclined section through hole 232. The positions of the above-mentioned multiple first protrusions 241 are thereby divided into multiple anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all smaller than H1 and H2. The adoption of this technical measure has the advantages of simple structure, low manufacturing cost, no influence on the pressure of the compression spring 2 itself, and the ability to prevent the compression springs 2 from being nested with each other.
[0048] Example 2
[0049] like Fig.10 — Fig.12 As shown, the other contents of this embodiment are the same as those of the embodiment 1, except that: the gap distance between the protrusion and the opposite hole wall is greater than H1 and H2. When L1 is greater than L2 and L3, and less than twice L2 and L3, two protrusions form a group, and the two protrusions are arranged oppositely and adjacently; at least one group of protrusions is arranged in the through hole 23, and one group of protrusions divides the through hole 23 into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all less than L2 and L3.
[0050] In actual use, due to problems such as manufacturing precision, the gap distance between the protrusion and the opposite hole wall may be greater than H1 and H2, resulting in the end of the connecting section 211 and the free section 22 being stuck in the gap between the protrusion and the opposite hole wall. With this technical measure, when the gap distance between the protrusion and the opposite hole wall is greater than H1 and H2, the two protrusions are arranged opposite and adjacent to each other to form a staggered structure, which can mutually close the gap between the protrusion and the opposite hole wall, thereby preventing the end of the connecting section 211 and the free section 22 from being stuck in the gap between the protrusion and the opposite hole wall.
[0051] Specifically, the protrusions are composed of a first protrusion 241 and a second protrusion 242, and the first protrusion 241 and the second protrusion 242 are arranged opposite to and adjacent to each other. The first protrusion 241 and the second protrusion 242 are arranged in the parallel section through hole 231, and the above group of protrusions divides the through hole 23 into two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are both smaller than L2 and L3. Among them, the first protrusion 241 and the second protrusion 242 can also be arranged opposite to each other with a gap or opposite to each other with an interval. The first protrusion 241 and the second protrusion 242 can also be arranged in the inclined section through hole 232 or between the parallel section through hole 231 and the inclined section through hole 232, etc. In actual use, the number of protrusions can be increased according to actual needs.
[0052] In actual use, the gap distance between the protrusion and the opposite hole wall is greater than H1 and H2; when L1 is greater than twice L2 and L3, the protrusions are multiple groups, and the multiple groups of protrusions divide the through hole 23 into multiple anti-embedding spaces and the inner diagonal lengths of the anti-embedding spaces are all smaller than L2 and L3.
[0053] like Fig.12 As shown, the protrusions are two groups of protrusions respectively arranged in the parallel section through hole 231 and the inclined section through hole 232; the two groups of protrusions divide the through hole 23 into a first anti-embedding space close to the side of the fixed section 21, a second anti-embedding space close to the side of the inclined section through hole 232, and a third anti-embedding space between the first anti-embedding space and the second anti-embedding space; the inner diagonal lengths of the first anti-embedding space, the second anti-embedding space and the third anti-embedding space are smaller than L2 and L3.
[0054] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A compression spring of a push rod type ultra-small electromagnetic relay, characterized in that: It includes a free section for positioning the free armature and a fixed section for connecting with the base, and the two ends of the fixed section are provided with connecting sections bent downward; the free section is provided with through holes penetrating the upper and lower ends thereof, The through hole is a long hole, and the straight-line distance between its farthest two ends is L1; The size of the connecting section in the first direction is L2, and the size of the free section in the second direction is L3. The size of the connecting section in the second direction is H1, and the size of the free section in the third direction is H2; At least one protrusion is arranged in the through hole along the first direction; One end of the protrusion is fixed on the inner wall of the through hole, and the other end thereof is in clearance fit with the opposite hole wall; The protrusions are used to divide the through hole into anti-embedding spaces whose inner diagonal lengths are smaller than L2 and L3.
2. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 1, characterized in that: The gap distance between the protrusion and the opposite hole wall is smaller than H1 and H2; When L1 is greater than L2 and L3, and less than twice L2 and L3, There is at least one protrusion; the protrusion divides the through hole into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are both smaller than L2 and L3.
3. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 1, characterized in that: The gap distance between the protrusion and the opposite hole wall is smaller than H1 and H2; When L1 is greater than twice L2 and L3, There are multiple protrusions, and the protrusions divide the through hole into multiple anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all smaller than L2 and L3.
4. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 1, characterized in that: The gap distance between the protrusion and the opposite hole wall is greater than H1 and H2; When L1 is greater than H1 and H2, and less than twice H1 and H2, The protrusions are grouped into two, and the two protrusions are arranged opposite and adjacent to each other; At least one group of protrusions is arranged in the through hole, and the group of protrusions divides the through hole into at least two anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are both smaller than L2 and L3.
5. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 4, characterized in that: The L1 is greater than twice H1 and H2, The protrusions are in multiple groups, and the multiple groups of protrusions divide the through hole into multiple anti-embedding spaces, and the inner diagonal lengths of the anti-embedding spaces are all smaller than L2 and L3.
6. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 1, characterized in that: The protrusion is in the shape of an elongated strip.
7. The compression spring of the push rod type ultra-small electromagnetic relay according to claim 1, characterized in that: The free section includes a parallel section and an inclined section. The through hole of the free section corresponds to the shape of the free section. The through hole includes a parallel section through hole and an inclined section through hole. The protrusion is arranged in the parallel section through hole and / or the inclined section through hole.