CN218731877U - Cage leaf spring and leaf spring jack - Google Patents
Cage leaf spring and leaf spring jack Download PDFInfo
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- CN218731877U CN218731877U CN202222419254.XU CN202222419254U CN218731877U CN 218731877 U CN218731877 U CN 218731877U CN 202222419254 U CN202222419254 U CN 202222419254U CN 218731877 U CN218731877 U CN 218731877U
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- leaf spring
- cage
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- retaining ring
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Abstract
The utility model discloses a cage leaf spring and leaf spring jack, the reed between two retaining rings is located to retaining ring and a plurality of that cage leaf spring set up around including two, and a plurality of the reed is followed retaining ring's circumference interval sets up, with the center of reed enclose close be formed with retaining ring intercommunication supplies contact pin male patchhole, the centre of reed is formed with the depressed part that is used for with the contact pin contact to patchhole inside sunken, retaining ring's periphery arch is equipped with the protruding structure that is used for forming point contact or line contact with its casing of external fixation. The utility model discloses a positive pressure of the multiplicable contact position department of protruding structure that sets up to this reduces the contact resistance of cage leaf spring, thereby provides lower temperature rise, higher overload, better electric property.
Description
Technical Field
The utility model relates to an electric connector technical field especially relates to a cage leaf spring and leaf spring jack.
Background
The electric connector is used as a basic component for realizing the transmission and control of electric signals and the connection between the electronic equipment and the electric equipment, is widely applied in the industries of electronics, machinery, aviation and the like and plays an important role, and the general structure of the electric connector mainly comprises three parts: the contact is responsible for completing the transmission function of electric signals, and the status in the electric connector is outstanding, and the contact is divided into two categories: a rigid contact (pin) and a resilient contact (socket).
Elastic contact members are classified into three types: a closed cantilever beam jack (split slot type) directly processed by copper alloy; a single-blade hyperboloid wire spring jack composed of a copper alloy wire and a shell; the single-leaf hyperboloid leaf spring jack (rotary spring, crown spring and torsion spring) is formed by punching and coiling a copper alloy sheet and forming a shell.
The existing single-blade hyperboloid leaf spring jack is connected with a shell through a stainless steel hoop spring (adopting a rotating spring) or a high-precision spring (adopting a torsion spring) through a red copper part riveting press, according to a formula of contact resistance, the contact resistance between the spring and the shell is influenced by contact piece materials, positive pressure (the positive pressure refers to the force generated by surfaces in contact with each other and vertical to the contact surfaces), surface states, use voltage, current and other factors, the existing single-blade hyperboloid leaf spring jack basically adopts a surface contact structure, the problem that the contact resistance is large and the electrical performance is influenced exists, and the leaf spring in the shell is also easily influenced by the insertion and extraction force and the torsional force caused by a contact pin so as to influence the service life and the structural reliability of the single-blade hyperboloid leaf spring jack.
In addition, the closed cantilever beam jack needs to be integrally made of copper alloy materials, and is formed by closing up after integral processing, so that the material cost is high, the processing cost is high, and meanwhile, the thickness of a plating layer cannot be increased aiming at a contact position; the copper alloy wires of the single-blade hyperboloid wire spring jacks need to be precisely arranged and riveted, and no electroplating layer is arranged on the section of each copper wire, so that the single-blade hyperboloid wire spring jacks are not easy to corrode, and the assembly cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the above-mentioned current technical defect, provide a cage leaf spring and leaf spring jack, the positive pressure of the multiplicable contact position department of protruding structure through setting up to this reduces the contact resistance of cage leaf spring, thereby provides lower temperature rise, higher overload, better electrical property.
In order to solve the technical problem, the utility model provides a cage leaf spring, locating the reed between two retaining rings including retaining ring and the a plurality of that two set up around, and a plurality of the reed is followed retaining ring's circumference interval sets up, so the center of reed enclose close be formed with retaining ring intercommunication supplies contact pin male patchhole, the centre of reed is formed with to the inside sunken depressed part that is used for with the contact pin contact of patchhole, retaining ring's periphery arch is equipped with and is used for forming point contact or line contact's protruding structure with its casing of external fixation.
Furthermore, the periphery of the holding ring is provided with at least one circle of protruding structures arranged at intervals in the front and at the back, and each circle of protruding structures comprises a plurality of protruding points arranged on the periphery of the holding ring in an annular array in a protruding mode.
Furthermore, protruding structure includes that a plurality of is the protruding strip of locating of annular array the periphery of holding ring, just protruding strip edge the front and back end slope of holding ring extends the setting.
Furthermore, the convex structure is an annular boss which is radially convex and arranged on the periphery of the holding ring.
Furthermore, a plurality of elastic arms extend outwards from one end, far away from the reed, of the fixing ring, are arranged at intervals along the circumferential direction of the fixing ring, and one protruding structure is arranged on the outer side surface of each elastic arm.
Furthermore, the protruding structure is a boss protruding from the periphery of the movable end of the elastic arm.
In a second aspect, the present invention further provides a leaf spring jack, which includes a housing having a receiving hole, and further includes a cage-type leaf spring according to any one of the first aspect, wherein the cage-type leaf spring is disposed in the receiving hole by interference fit, and the protrusion structure is in point contact or line contact with the inner wall of the receiving hole.
Furthermore, the leaf spring jack also comprises a riveting ring sleeved at the opening end of the accommodating hole and used for pressing the cage-type leaf spring inwards.
A third aspect, the utility model also provides a leaf spring jack, including the casing that has the holding hole, still include as the first aspect second the cage leaf spring, the cage leaf spring is located through interference fit's mode in the holding hole, still be equipped with the suit in the holding hole cage leaf spring periphery compresses tightly inwards the riveting section of thick bamboo of cage leaf spring, and two bump on the immobilization ring respectively with form the point contact between the inner wall in riveting section of thick bamboo and holding hole.
In a fourth aspect, the utility model also provides a leaf spring jack, including the casing that has the holding hole, still include like the fourth item of the first aspect cage leaf spring, the cage leaf spring is located through interference fit's mode in the holding hole, still be equipped with the suit in the holding hole cage leaf spring periphery compresses tightly inwards the riveting section of thick bamboo of cage leaf spring, just cyclic annular boss with form the line contact between the inner wall of riveting section of thick bamboo.
Furthermore, the riveting cylinder is composed of two symmetrically arranged semi-circular cylinder walls.
The utility model discloses following beneficial effect has:
in the utility model, the convex structure is added on the periphery of the fixed ring, so that the cage-type leaf spring and the shell for fixing the cage-type leaf spring externally form point contact or line contact, and when the cage-type leaf spring and the shell are fixed in an interference fit manner, compared with the existing structure in which the cage-type leaf spring and the shell are in contact with each other, the convex structure for forming point contact or line contact can increase the positive pressure at the contact position between the cage-type leaf spring and the shell, and according to a contact resistance formula, under the condition that other parameters are not changed, the increased positive pressure can reduce the contact resistance, thereby providing lower temperature rise, higher overload and better electrical performance; in addition, when the protruding structure adopts the protruding strips which are obliquely arranged, the effect of increasing the torsion angle can be achieved, the torsion force between the cage-type leaf spring and the shell can be further increased, and the influence on the service life and the damage of the cage-type leaf spring due to torsion is reduced; when the annular boss is adopted as the convex structure, the stamping manufacturing process is simple, the strength of the cage-type leaf spring can be enhanced, the contact stress between the cage-type reed and the shell can be kept, and the service life of the cage-type reed can be prolonged; when the protruding structure is arranged on the elastic arm, the elasticity of the elastic arm can be used for adapting to the condition of insufficient processing precision of the shell, so that the applicability is improved, and the processing cost is reduced.
In the leaf spring jack, a riveting ring structure is adopted, so that the protective effect of preventing the cage-type leaf spring from loosening is achieved, and meanwhile, when the riveting ring is inserted into and pulled out of the contact pin, the contact pin can be guided by the riveting ring, the direct stress of the cage-type leaf spring is avoided, and the service life of the cage-type leaf spring is prolonged; and in the structure that adopts the riveting section of thick bamboo, the contact stroke when can reduce cage leaf spring and pack into the casing plays the effect of protection cage leaf spring.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic view of a cage-type leaf spring of example 1;
figure 2 is a schematic view of a cage-type leaf spring according to embodiment 2;
figure 3 is a schematic view of a caged leaf spring of embodiment 3;
FIG. 4 is a schematic view of a cage-type leaf spring according to example 4;
FIG. 5 is an exploded perspective view of a leaf spring jack according to embodiment 5;
fig. 6 is a sectional view of a leaf spring insertion hole in embodiment 6;
fig. 7 is an exploded view of the leaf spring insertion hole in embodiment 7.
Detailed Description
For a fuller understanding of the technical aspects of the present invention, reference should be made to the following detailed description taken together with the accompanying drawings; it should be noted that, if "first" or "second" is described in the text, it is used to distinguish different components, and the like, and does not represent the order of precedence, and does not limit "first" and "second" to be different types.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the cage-type leaf spring 10 shown in this embodiment includes two retaining rings 1 arranged at intervals in a front-back direction and a plurality of leaf springs 2 integrally formed between the two retaining rings 1, and the plurality of leaf springs 2 are arranged at intervals along the circumferential direction of the retaining rings 1, that is, two ends of the leaf springs are respectively connected with the inner side end faces of the retaining rings, so that insertion holes 21 communicated with the retaining rings 1 and used for inserting external pins are formed at the centers of all the leaf springs in an enclosing manner, recessed portions 22 for contacting with the pins are formed in the middle of the leaf springs 2 and recessed into the insertion holes 21, so that the insertion holes are formed in a structure with a small middle and large two ends, and a raised structure for forming point contact with a housing for externally fixing the retaining rings 1 is raised on the periphery of the retaining rings 1; it will be appreciated that to increase the torsional force between the pin and the spring, the spring is inclined or threaded between the retaining rings so that there is a cross angle between the axial direction of the pin and the spring.
In the above, through increasing protruding structure in the periphery of holding ring, make this cage leaf spring and the outside casing of fixing it form the point contact, and when both adopt interference fit's mode to fix when the assembly, relative to the structure of two interfacial contacts among the current, the protruding structure that should form the point contact can increase the positive pressure of contact position department between cage leaf spring and the casing between the two, according to the contact resistance formula, under the unchangeable circumstances of other parameters, increase positive pressure and can reduce contact resistance to provide lower temperature rise, higher overload, better electrical property.
Preferably, the outer periphery of the retaining ring 1 is provided with two circles of protruding structures arranged at intervals in the front-back direction, each circle of protruding structures includes a plurality of protruding points 3 protruding in an annular array and arranged on the outer periphery of the retaining ring 1, and in order to facilitate the cage-type leaf spring to be installed in the housing, the protruding points are designed to be smooth spherical transition surfaces, of course, the protruding points can also be designed to be columnar, conical or other shapes, and the shape is not limited here.
Example 2
As shown in fig. 2, the cage-type leaf spring 10 of the present embodiment includes two retaining rings 1 disposed at intervals in a front-back direction and a plurality of leaf springs 2 integrally disposed between the two retaining rings 1, and the plurality of leaf springs 2 are disposed at intervals along the circumferential direction of the retaining rings 1, that is, two ends of the leaf springs are respectively connected to the inner side end faces of the retaining rings, so that insertion holes 21 communicating with the retaining rings 1 and allowing external pins to be inserted are formed at the centers of all the leaf springs, a concave portion 22 for contacting with the pins is formed in the middle of the leaf springs 2 and concaved into the insertion holes 21, so that the insertion holes are formed in a structure with a small middle and large two ends, and a convex structure for forming line contact with a housing for externally fixing the retaining rings 1 is convexly disposed at the periphery of the retaining rings 1; it will be appreciated that to increase the torsional force between the pin and the spring, the spring is inclined or threaded between the retaining rings so that there is a cross angle between the axial direction of the pin and the spring.
Preferably, the protrusion structure includes a plurality of protrusion strips 4 protruding from the periphery of the retaining ring 1 in an annular array, the protrusion strips are in a strip structure, so that the cage-type leaf spring is in line contact with the housing fixed to the outer portion of the cage-type leaf spring, the protrusion strips can increase the positive pressure at the contact position between the cage-type leaf spring and the housing, and according to the contact resistance formula, under the condition that other parameters are not changed, the increase of the positive pressure can reduce the contact resistance, thereby providing lower temperature rise, higher overload and better electrical performance.
Preferably, the protruding strips 4 extend obliquely along the front end and the rear end of the holding ring 1, namely the protruding strips are not perpendicular to the end face of the holding ring, so that the twisting angle is increased, the twisting force between the cage-type leaf spring and the shell can be increased, and the influence on the service life and the damage of the cage-type leaf spring due to twisting is reduced; of course, the direction of inclination of the raised strip may be the same as or opposite to the direction of inclination of the leaf spring, and the angles of inclination may be the same or different.
Example 3
As shown in fig. 3, the cage-type leaf spring 10 of the present embodiment includes two retaining rings 1 disposed at intervals in a front-back direction and a plurality of leaf springs 2 integrally disposed between the two retaining rings 1, and the plurality of leaf springs 2 are disposed at intervals along the circumferential direction of the retaining rings 1, that is, two ends of the leaf springs are respectively connected to the inner side end surfaces of the retaining rings, so that insertion holes 21 communicating with the retaining rings 1 and allowing external pins to be inserted are formed at the centers of all the leaf springs, a concave portion 22 for contacting with the pins is formed in the middle of the leaf springs 2 and concaved into the insertion holes 21, so that the insertion holes are formed in a structure with a small middle and large two ends, and a convex structure for forming line contact with a housing for externally fixing the retaining rings 1 is convexly disposed at the periphery of the retaining rings 1; it will be appreciated that in order to increase the torsional force between the pin and the spring, the spring is inclined or threaded between the retaining rings so that there is a cross angle between the axial direction of the pin and the spring.
Preferably, the convex structure is an annular boss 5 which is radially convex and arranged on the periphery of the holding ring, namely, the annular boss 5 is in annular line contact with the shell; in this structure, at first can increase the positive pressure of cage leaf spring and casing contact position department between the two through the cyclic annular boss that sets up, according to the contact resistance formula, under the unchangeable circumstances of other parameters, it can reduce contact resistance to increase positive pressure, thereby provide lower temperature rise, higher overload, better electric property, this cyclic annular protruding structure punching press manufacturing process is simple in addition, can strengthen the intensity of cage leaf spring, keep the contact stress between cage leaf spring and the casing, can improve the life of cage leaf spring.
Example 4
As shown in fig. 4, the cage-type leaf spring 10 of the present embodiment includes two retaining rings 1 disposed at intervals in a front-back direction and a plurality of leaf springs 2 integrally disposed between the two retaining rings 1, and the plurality of leaf springs 2 are disposed at intervals along the circumferential direction of the retaining rings 1, that is, two ends of the leaf springs are respectively connected to the inner side end surfaces of the retaining rings, so that insertion holes 21 communicating with the retaining rings 1 and allowing external pins to be inserted are formed at the centers of all the leaf springs, a concave portion 22 for contacting with the pins is formed in the middle of the leaf springs 2 and concaved into the insertion holes 21, so that the insertion holes are formed in a structure with a small middle and large two ends, and a convex structure for forming line contact with a housing for externally fixing the retaining rings 1 is convexly disposed at the periphery of the retaining rings 1; it will be appreciated that to increase the torsional force between the pin and the spring, the spring is inclined or threaded between the retaining rings so that there is a cross angle between the axial direction of the pin and the spring.
Preferably, one end of the holding ring 1, which is far away from the reed 2, extends outwards to form a plurality of elastic arms 6, the elastic arms 6 are arranged at intervals along the circumferential direction of the holding ring 1, the outer side surface of the movable end of each elastic arm 6 is provided with a boss 7 in a protruding manner, and the bosses 7 are used as protruding structures which are in contact with the shell; in this structure, can increase the positive pressure of contact position department between cage leaf spring and the casing between the two through the boss that sets up at first, according to the contact resistance formula, under the unchangeable circumstances of other parameters, increase positive pressure and can reduce contact resistance to provide lower temperature rise, higher overload, better electric property, the elasticity that sets up usable its of elastic arm adapts to the not enough condition of casing machining precision in addition, in order to improve the suitability and reduce the processing cost.
Example 5
As shown in fig. 5, the leaf spring jack of the present embodiment includes a housing 30 having a receiving hole 20, and further includes a cage-type leaf spring 10 according to any one of embodiments 1 to 4, wherein the cage-type leaf spring 10 is inserted into the receiving hole 20 by interference fit, and a point contact or a line contact is formed between a protrusion structure in the cage-type leaf spring 10 and an inner wall of the receiving hole 20; the drawings in this embodiment exemplify the cage-type leaf spring 10 described in embodiment 1.
As the preferred, this leaf spring jack still includes the riveting ring 40 of suit in the open end of holding hole 20 and inwards compressing tightly cage leaf spring 10, through the riveting ring that adopts, firstly plays the guard action who prevents the cage leaf spring pine and take off, simultaneously when with the contact pin plug, the contact pin can be led to the riveting ring, avoids the direct atress of cage leaf spring, increases cage leaf spring's life.
Example 6
As shown in fig. 6, the leaf spring jack shown in this embodiment includes a housing 30 having a receiving hole 20, and further includes a cage leaf spring 10 as described in embodiment 1, the cage leaf spring 10 is disposed in the receiving hole 20 by interference fit, a riveting cylinder 50 sleeved on the outer periphery of the cage leaf spring 10 and pressing the cage leaf spring 10 inward is further disposed in the receiving hole 20, and two protrusions 3 on the two retaining rings 1 respectively form point contacts with the riveting cylinder 50 and the inner wall of the receiving hole 20, that is, the retaining ring 1 at the front end of the cage leaf spring 10 protrudes out of the riveting cylinder 50, and other portions are disposed in the riveting cylinder, so as to fix the cage leaf spring 10 by using both the housing and the riveting cylinder; during the assembly, the riveting cylinder and the cage-type leaf spring are sleeved and fixed in an interference fit mode, and then the riveting cylinder and the cage-type leaf spring are installed in the accommodating hole in an interference fit mode.
Example 7
As shown in fig. 7, the leaf spring jack shown in this embodiment includes a housing 30 having a receiving hole 20, and further includes a cage-type leaf spring 10 as described in embodiment 3, the cage-type leaf spring 10 is disposed in the receiving hole 20 by interference fit, a riveting cylinder 50 sleeved on the outer periphery of the cage-type leaf spring 10 and pressing the cage-type leaf spring 10 inward is further disposed in the receiving hole 20, and a line contact is formed between the annular bosses 5 on the two retaining rings 1 and the inner wall of the riveting cylinder 50; during the equipment earlier with riveting section of thick bamboo and cage leaf spring equipment together, pack into the holding hole through interference fit's mode with both again, at the assembly male in-process, it is the contact of riveting section of thick bamboo with the inner wall in holding hole all the time, consequently cage leaf spring when packing into in the holding hole not with the casing contact, can play the effect of protection cage leaf spring.
Preferably, in order to conveniently install the cage-type leaf spring into the riveting cylinder, the riveting cylinder 50 is composed of two symmetrically arranged semicircular cylinder walls 51, so that the two semicircular cylinder walls 51 can be directly sleeved outside the cage-type leaf spring and then are installed in the accommodating hole together in a half-and-half assembling mode, the semicircular cylinder walls 51 and the cage-type leaf spring 10 form interference fit by using the pressure of the shell on the semicircular cylinder walls 51, and a structure of annular line contact is formed by using an annular boss; in this configuration, the annular boss is subjected to only radial positive pressure, and the cage leaf spring is protected during interference fit.
Preferably, an annular groove 52 matched with the annular boss 5 can be further arranged on the inner wall of the riveting cylinder 50 to play a role in axially positioning the cage-type leaf spring; of course, in order to realize the interference fit between the annular boss and the inner wall of the riveting cylinder, the depth of the annular groove is smaller than the height of the annular boss.
The technical solutions provided by the embodiments of the present invention are introduced in detail, and the principles and embodiments of the present invention are explained by using specific examples, and the explanations of the above embodiments are only applicable to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the contents of the present specification should not be construed as limitations of the present invention.
Claims (10)
1. The utility model provides a cage leaf spring, its characterized in that includes that two fixing ring and the reed between two fixing ring are located to a plurality of that set up around the back, and a plurality of the reed is followed fixing ring's circumference interval sets up, with the center of reed enclose be formed with fixing ring intercommunication and supply the male patchhole of contact pin, the centre of reed is formed with the depressed part that is used for contacting with the contact pin to patchhole inside sunken, fixing ring's periphery arch is equipped with and is used for forming point contact or line contact's protruding structure with its casing of external fixation.
2. The cage leaf spring of claim 1 wherein the retaining ring has at least one ring of raised structures spaced apart from one another, each ring of raised structures comprising a plurality of raised projections extending in an annular array about the periphery of the retaining ring.
3. The cage leaf spring of claim 1 wherein the raised structure comprises a plurality of raised strips raised in an annular array on the outer periphery of the retaining ring, the raised strips extending obliquely along the front and rear ends of the retaining ring.
4. The cage leaf spring of claim 1 wherein the raised structure is an annular boss projecting radially from the outer periphery of the retaining ring.
5. The cage-type leaf spring of claim 1 wherein the retaining ring has a plurality of resilient arms extending outwardly away from the leaf spring, the plurality of resilient arms being spaced circumferentially about the retaining ring, the outer surface of each resilient arm having a projection.
6. The cage leaf spring of claim 5 wherein the raised structure is a projection from the periphery of the free end of the spring arm.
7. A leaf spring jack comprising a housing having a receiving bore, further comprising a cage leaf spring according to any one of claims 1 to 6, said cage leaf spring being disposed within said receiving bore by interference fit, and said projection formation being in point or line contact with the inner wall of said receiving bore.
8. The leaf spring receptacle of claim 7, further comprising a crimp ring that fits over an open end of the receiving hole and compresses the caged leaf spring inwardly.
9. A leaf spring jack, comprising a housing with a containing hole, and further comprising the cage-type leaf spring as claimed in claim 2, wherein the cage-type leaf spring is arranged in the containing hole in an interference fit manner, a riveting cylinder sleeved on the periphery of the cage-type leaf spring and pressing the cage-type leaf spring inwards is further arranged in the containing hole, and salient points on the two retaining rings are respectively in point contact with the riveting cylinder and the inner wall of the containing hole.
10. A leaf spring jack, which comprises a shell with a containing hole, and is characterized by further comprising the cage-type leaf spring as claimed in claim 4, wherein the cage-type leaf spring is arranged in the containing hole in an interference fit manner, a riveting cylinder which is sleeved on the periphery of the cage-type leaf spring and presses the cage-type leaf spring inwards is further arranged in the containing hole, and a line contact is formed between the annular boss and the inner wall of the riveting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222419254.XU CN218731877U (en) | 2022-09-13 | 2022-09-13 | Cage leaf spring and leaf spring jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222419254.XU CN218731877U (en) | 2022-09-13 | 2022-09-13 | Cage leaf spring and leaf spring jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218731877U true CN218731877U (en) | 2023-03-24 |
Family
ID=85634344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222419254.XU Active CN218731877U (en) | 2022-09-13 | 2022-09-13 | Cage leaf spring and leaf spring jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218731877U (en) |
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2022
- 2022-09-13 CN CN202222419254.XU patent/CN218731877U/en active Active
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