CN212342451U - Rotary transformer - Google Patents

Abstract

The utility model discloses a rotary transformer, include: the framework is annular and is provided with a stator; the base is arranged on the periphery of the framework, a guide part and a positioning part are arranged on the side surface of the base, and the guide part extends along the direction parallel to the axis of the framework; and the inner wall of the cover body is provided with a sliding part matched with the guide part, and the inner wall of the cover body is also provided with a clamping part matched with the positioning part. The utility model discloses can guarantee that lid and base are difficult for droing and can dismantle the connection.

Description

Rotary transformer

Technical Field

The utility model relates to the field of electronic technology, in particular to rotary transformer.

Background

A resolver is an electromagnetic sensor, also called a resolver. It is a small AC motor for measuring angle, and is used to measure angular displacement and angular speed of rotating shaft of rotating object. The resolver generally includes a rotor, a stator, and a wiring member for concentrated wiring.

The wiring member generally includes a base and a protective cover. The existing protective cover generally adopts a matching mode of installing along the radial direction of a stator and a base, and when the rotary transformer is used, the rotary transformer is rotated due to vibration of a power device, the whole transformer can be subjected to force along the radial direction of the stator, so that the protective cover has the risk of falling off due to the action of external force in the use process of the rotary transformer.

The problem that the protective cover is separated is solved by a common solution in the industry or by gluing two parts of the base and the protective cover together, and the defect that the parts need to be inspected in the later period to damage the adhesion between the protective cover and the glue; or through structural adjustment, increase the area of contact of joint department, the shortcoming is because the buckle increases the difficult problem of dismantling that leads to the visor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotary transformer, the lid receives exogenic action and the problem that drops when aiming at solving rotary transformer and using, guarantees that lid and base are difficult for droing and can dismantle and be connected.

In order to achieve the above object, the present invention provides a rotary transformer, including: the framework is annular and is provided with a stator; the base is arranged on the periphery of the framework, a guide part and a positioning part are arranged on the side surface of the base, and the guide part extends along the direction parallel to the axis of the framework; and the inner wall of the cover body is provided with a sliding part matched with the guide part, and the inner wall of the cover body is also provided with a clamping part matched with the positioning part.

Optionally, the positioning member extends in a radial direction of the skeleton.

Optionally, the cover comprises: a protection part for covering the upper surface of the base; the two fixing parts are oppositely arranged and positioned on the protection part, sliding parts matched with the guide part are arranged on the two fixing parts, and clamping parts matched with the positioning parts are arranged on the two fixing parts.

Optionally, the cover further comprises: the limiting part is arranged on the protection part and connected between the two fixing parts, and the limiting part is used for abutting against the upper surface of the base.

Optionally, the sliding part is closer to the limiting part than the clamping part, the fixing part is provided with a gap, and the sliding part and the clamping part are respectively located at two sides of the gap.

Optionally, the guide is a sliding chute, and the sliding part is a sliding rail; or the guide part is a slide rail, and the sliding part is a sliding chute; the positioning piece is a clamping groove, and the clamping piece is a clamping block; or the positioning piece is a clamping block, and the clamping piece is a clamping groove.

Optionally, a guide inclined plane convenient for the clamping into the clamping groove is arranged on the clamping block.

Optionally, a coil is arranged on the stator, a PIN needle is arranged on the base, the coil is connected with one end of the PIN needle, and the other end of the PIN needle is connected with a wire.

Optionally, the base is provided with an outlet groove, the lead penetrates out of the outlet groove, and two opposite groove walls of the outlet groove are provided with protrusions which are aligned or staggered; and/or one end of the PIN needle connecting coil extends out of the upper surface of the base, and the upper surface of the base is coated with sealing glue for sealing the PIN needle.

Optionally, a mounting groove matched with the PIN needle is formed in the base, and the PIN needle is inserted into the mounting groove; or the base and the PIN needle are fixed through insert injection molding.

The technical scheme of the utility model guide that the axis direction that is on a parallel with the skeleton extends is set up through the side at the base, the inner wall of lid is equipped with the slider with the guide cooperation, side at the base sets up the setting element, the inner wall of lid is equipped with and holds the piece with setting element complex card, restrict the relative motion of lid and base completely through above-mentioned cooperation, can realize the purpose of fixed lid in order to reach protection PIN needle, effectively solve when resolver uses the lid and receive along the radial exogenic action of skeleton and cause the problem that drops, and the card of lid is held the piece and the setting element of base has realized dismantling of lid and base and is connected, the lid is easily dismantled to the convenience when later stage investigation spare part.

Drawings

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

Fig. 1 is a schematic structural diagram of an embodiment of a rotary transformer according to the present invention;

FIG. 2 is a schematic structural diagram of a base of the rotary transformer in FIG. 1;

FIG. 3 is a schematic structural diagram of a cover of the rotary transformer in FIG. 1;

FIG. 4 is a schematic view of an assembly structure of the base and the cover of the rotary transformer in FIG. 1;

fig. 5 is a schematic structural diagram of an outlet groove of a base of the rotary transformer in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Rotary transformer	32	Cover body
10	Framework	321	Sliding member
				21	Stator core	322	Clamping piece
22	Stator detection tooth	323	Protection part
				31	Base seat	324	Fixing part
311	Guide member	325	Limiting part
				312	Locating piece	326	Gap
313	Wire outlet groove	327	Guide slope
				314	Projection	40	PIN needle

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a resolver 100, resolver 100 are an electromagnetic type sensor, also known as synchroresolver. The small AC motor is used to measure angular displacement and speed of rotating shaft of rotating object and includes stator, rotor, windings and wiring members. The stator winding is used as the primary side of the transformer and receives excitation voltage, and the rotor winding is used as the secondary side of the transformer and obtains induced voltage through electromagnetic coupling.

In the embodiment of the present invention, as shown in fig. 1 to 3, the rotary transformer 100 includes: the framework 10 is annular, and the framework 10 is provided with a stator; the base 31, the base 31 is set on the periphery of the framework 10, the side of the base 31 is set with the guiding element 311 and the positioning element 312, and the guiding element 311 extends along the direction parallel to the axis of the framework 10; and a cover 32, wherein the inner wall of the cover 32 is provided with a sliding member 321 engaged with the guiding member 311, and the inner wall of the cover 32 is further provided with a retaining member 322 engaged with the positioning member 312.

The utility model discloses in, the outer anchor ring of skeleton 10 has cup jointed stator core 21, and stator core 21 is formed with a plurality of stators in the interior anchor ring of skeleton 10 and detects tooth 22, and every stator detects all around having the coil on the tooth 22, and the center of skeleton 10 is equipped with rotor and rotor winding (not shown in the figure), and the rotor is generally connected to power device's output like the spindle of motor. The coils of the stator are collectively connected to a wiring member on the bobbin 10 and electrically connected to the controller through output lines to transmit angle information detected by the resolver 100 to the controller.

Wherein, the wiring component includes base 31 and lid 32, and base 31 locates the periphery of skeleton 10, and lid 32 is used for closing on base 31 in order to cover the part such as PIN needle 40 on base 31, avoids PIN needle 40 on base 31 to expose, thereby protects PIN needle 40 on base 31 from damaging.

The base 31 is substantially plate-shaped and extends outward from the periphery of the frame 10 along the radial direction of the frame 10, the side surface of the base 31 is provided with a guide 311 extending in the direction parallel to the axial direction of the frame 10 and a positioning member 312 for fixing the cover 32, and the inner wall of the cover 32 is correspondingly provided with a sliding member 321 engaged with the guide 311 and a retaining member 322 engaged with the positioning member 312.

In fig. 2, the X-axis direction is a radial direction of the frame 10, the Y-axis direction is an axial direction of the frame 10, and the Z-axis direction is a tangential direction of the frame 10, and the orientation of the other drawings can be referred to as shown in fig. 2.

The cover 32 is mounted with the base 31 along the axial direction parallel to the framework 10 by the cooperation of the sliding member 321 and the guide member 311, i.e. the sliding member 321 and the guide member 311 cooperate to limit the relative movement of the cover 32 and the base 31 in the directions of the X-axis and the Z-axis and the relative rotation in the directions of the X-axis, the Y-axis and the Z-axis; the cover 32 and the base 31 are fixed together by the engagement of the catch 322 and the positioning member 312. Can restrict the relative motion of lid 32 and base 31 through the cooperation of above-mentioned structure, can realize fixing lid 32 in order to reach the purpose of protection PIN needle 40, effectively solve when resolver 100 uses lid 32 and receive along skeleton 10 radial along the X axle direction external force effect promptly and cause the problem that drops, the card of lid 32 is held a piece 322 and base 31's setting element 312 and is realized being connected with dismantling of lid 32 with base 31 in addition, the convenient lid 32 of easily dismantling when later stage investigation spare part.

To sum up, the technical scheme of the utility model guide part 311 through the axis direction extension that sets up along being on a parallel with skeleton 10 in the side of base 31, the inner wall of lid 32 be equipped with guide part 311 complex slider 321, set up setting element 312 in the side of base 31, the inner wall of lid 32 is equipped with the card of holding with setting element 312 complex and is held a 322, the relative motion through above-mentioned structure cooperation restriction lid 32 and base 31, can realize fixed lid 32 in order to reach the purpose of protection PIN needle 40, effectively solve when resolver 100 uses lid 32 and receive along the radial exogenic action of skeleton 10 and cause the problem that drops, and lid 32 and the dismantlement of base 31 have been realized to the card of lid 32 holding a 322 and base 31's setting element 312, the lid 32 is easily dismantled to the convenience when later stage investigation spare part.

Referring to fig. 2, in the present embodiment, the positioning element 312 on the base 31 extends along the radial direction of the framework 10, and correspondingly, the retaining element 322 on the cover 32 also extends along the radial direction parallel to the framework 10, so that the relative movement of the cover 32 and the base 31 along the Y-axis direction is limited by the cooperation of the positioning element 312 and the retaining element 322, and the relative movement of the cover 32 and the base 31 can be completely limited by the cooperation of the guiding element 311 and the sliding element 321 along the axial direction parallel to the framework 10, so as to prevent the cover 32 from being loosened from the base 31 when the cover 32 is vibrated by an external force.

Referring to fig. 3, specifically, the cover 32 includes: a protection part 323, the protection part 323 covering the upper surface of the base 31; two fixing portions 324, the two fixing portions 324 are disposed opposite to each other and located on the protection portion 323, the two fixing portions 324 are both provided with a sliding member 321 engaged with the guiding member 311, and the two fixing portions 324 are both provided with a retaining member 322 engaged with the positioning member 312.

Through the two opposite sliding parts 321 on the two opposite fixing parts 324, both sides of the cover body 32 are matched with the base 31 through the sliding parts 321, and through the matching of the sliding parts 321 on both sides and the guide parts 311, the cover body 32 is ensured to be installed with the base 31 along the axial direction parallel to the framework 10, namely, the two sliding parts 321 and the two guide parts 311 are matched to completely limit the relative movement of the cover body 32 and the base 31 in the directions of the X axis and the Z axis and the relative rotation in the directions of the X axis, the Y axis and the Z axis; through the two opposite retaining members 322 of the two fixing portions 324, the two sides of the cover 32 are both engaged with the base 31 through the retaining members 322, and through the engagement between the sliding members 321 and the guiding members 311, the cover 32 and the base 31 are stably fixed together, i.e., the two retaining members 322 and the two positioning members 312 are engaged to completely limit the relative movement of the cover 32 and the base 31 in the X-axis direction.

Further, the lid 32 further includes: the limiting part 325 is arranged on the protection part 323 and connected between the two fixing parts 324, and the limiting part 325 is used for abutting against the upper surface of the base 31 to limit a preset distance between the protection part 323 and the upper surface of the base 31 so as to prevent the protection part 323 from contacting the PIN PIN 40.

The movement of the cover 32 relative to the base 31 along the negative direction of the Y axis is further limited by the matching of the limiting part 325 and the upper surface of the base 31, therefore, the limiting part 325 can prevent the mounting position of the cover 32 from exceeding a certain limit when the cover 32 and the base 31 are mounted, the damage to the PIN needle 40 due to the contact between the cover 32 and the PIN needle 40 is avoided, and the mounting superiority of the cover 32 and the base 31 is ensured.

Optionally, the sliding element 321 is closer to the limiting portion 325 than the retaining element 322, the fixing portion 324 is provided with a gap 326, and the sliding element 321 and the retaining element 322 are respectively located at two sides of the gap.

In this embodiment, on the fixing portion 324 of the cover 32, the sliding member 321 is closer to the limiting portion 325 than the retaining member 322, and a gap 326 is provided between the sliding member 321 and the retaining member 322, so that the sliding member 321 can maintain the original shape by the limiting portion 325, and the limiting effect generated by the matching of the sliding member 321 and the guiding member 311 on the base 31 is better; meanwhile, the retaining member 322 is more easily deformed through the gap 326, which is beneficial to the retaining member 322 to be retained, fixed, detached and separated from the positioning member 312 on the base 31 through the toughness of the retaining member, and is convenient for the installation and detachment of the cover 32.

Referring to fig. 2 to 3, optionally, the guiding element 311 is a sliding slot, and the sliding element 321 is a sliding rail; or, the guiding element 311 is a sliding rail, and the sliding element 321 is a sliding chute; moreover, the positioning element 312 is a slot, and the retaining element 322 is a block; or, the positioning element 312 is a latch and the retaining element 322 is a slot.

In this embodiment, the guiding element 311 is a sliding groove, the sliding groove extends on the base 31 along the axis direction parallel to the framework 10, the sliding element 321 is a sliding rail adapted to the sliding groove, and accordingly, the sliding rail extends on the inner wall of the cover 32 along the axis direction parallel to the framework 10, when the cover 32 covers the base 31, the sliding groove and the sliding rail are matched with each other, so as to limit the relative movement of the cover 32 and the base 31 in the X-axis and Z-axis directions, and effectively solve the problem that the cover 32 is subject to the external force action along the radial direction of the framework 10, i.e., along the X-axis direction, to cause the falling when the resolver 100 is used. Of course, the guide 311 may be a slide rail, and the slider 321 may be a slide groove, which has the same operational effect.

Meanwhile, the positioning element 312 in this embodiment is a slot, the slot extends on the base 31 along the radial direction of the framework 10, the clamping element 322 is a clamping block matched with the slot, accordingly, the clamping block extends on the inner wall of the cover 32 along the radial direction of the framework 10, when the cover 32 covers the base 31, the clamping block and the slot are matched with each other, so that the relative movement of the cover 32 and the base 31 in the Y-axis direction is limited, and the problem that the cover 32 falls off due to the external force action along the radial direction of the framework 10, i.e. along the Y-axis direction when the rotary transformer 100 is used is avoided. Of course, the positioning element 312 may be a latch, and the retaining element 322 may be a slot, which have the same function and effect.

Referring to fig. 3, optionally, the locking block is provided with a guiding inclined surface 327 for facilitating the locking into the locking groove.

In order to facilitate the cover 32 to be installed on the base 31 with less effort, in this embodiment, the fixture block is provided with the guiding inclined surface 327 for facilitating the clamping of the positioning element 312, that is, the cross-sectional area of the fixture block is gradually reduced from the edge of the fixture block to the fixing portion 324, so that the guiding inclined surface 327 is formed on the fixture block, when the cover 32 is installed on the base 31, the guiding inclined surface 327 of the fixture block contacts with the base 31 first, and then when the cover 32 is gradually installed on the base 31, the fixing portion 324 where the fixture block is located is gradually opened by the guiding inclined surface 327 until the fixture block is clamped with the clamping.

Referring to fig. 1 to 2, specifically, a coil is disposed on the stator, a PIN 40 is disposed on the base 31, the coil is connected to one end of the PIN 40, and the other end of the PIN 40 is connected to a lead.

The coil of stator is connected with the input of PIN needle 40 on the base 31, and the output of PIN needle 40 is connected with the wire, and this wire is the output line, and the output line is connected with the controller, and the angle information that resolver 100 detected passes through the output line and transmits to the controller obtains the rotation information of the motor that links to each other with the rotor, realizes automatic control.

Referring to fig. 4 to 5, optionally, an outlet groove 313 is formed on the base 31, the wires are led out from the outlet groove 313, and two opposite groove walls of the outlet groove 313 are provided with protrusions 314 which are aligned or dislocated.

The terminal surface of base 31 is equipped with a row of a plurality of wire outgoing groove 313, and wire outgoing groove 313 communicates to the output position of PIN needle 40 on base 31, and wire outgoing groove 313's structure includes two relative cell walls and the tank bottom of connecting two cell walls, and the notch is formed to the top of two cell walls, and the output line that PIN needle 40 output is connected all wears out through wire outgoing groove 313, and wire outgoing groove 313 makes base 31 can walk the line in order, avoids the wire confusion to place.

The opposite groove walls of the wire outlet groove 313 are provided with the protrusions 314 which are aligned or staggered, so that the lead is in an S-shaped or thin waist-shaped shape when being installed in the wire outlet groove 313, the lead is convenient to install, and the stress concentration of welding points of the lead in the vibration can be effectively inhibited in the X-axis direction.

Meanwhile, the groove depth of the wire outlet groove 313 can be set to be smaller than the diameter of the lead, when the cover body 32 is mounted on the base 31, the limiting part 325 of the cover body 32 presses the notch of the wire outlet groove 313, the limiting part 325 presses the lead, the lead can be effectively prevented from moving in the Y-axis direction, the protrusion 314 effectively inhibits the movement of the lead in the X-axis direction, and the combination of the two effectively reduces the stress concentration of a welding point when the lead vibrates.

Optionally, one end of the PIN 40 connected to the coil protrudes from the upper surface of the base 31, and the upper surface of the base 31 is coated with a sealing glue for sealing the PIN 40.

In order to improve the shock resistance of the rotary transformer 100 and prolong the service life of a product in a severe environment, the PIN 40 can be sealed by using an organic silicon sealant after being installed and fixed on the base 31, namely after the PIN 40 is installed, the input end of the PIN 40 extends out of the upper surface of the base 31 and is connected with a coil, the organic silicon sealant is coated on the upper surface of the base 31, so that the PIN 40 is in a sealed state, and the shock resistance and the service life of the rotary transformer 100 are improved.

Optionally, a mounting groove adapted to the PIN 40 is formed in the base 31, and the PIN 40 is inserted into the mounting groove; alternatively, the base 31 and the PIN 40 are fixed by insert molding.

The PIN 40 and the base 31 can be fixed by forming a mounting groove on the base 31, inserting the PIN 40 into the mounting groove to fix the PIN 40 to the base 31, or by injection molding to fix the PIN 40 to the base 31. The fixing mode of the PIN 40 can be flexibly selected according to actual needs.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A rotary transformer, comprising:

the framework is annular and is provided with a stator;

the base is arranged on the periphery of the framework, a guide part and a positioning part are arranged on the side surface of the base, and the guide part extends along the direction parallel to the axis of the framework; and

the inner wall of the cover body is provided with a sliding part matched with the guide part, and the inner wall of the cover body is also provided with a clamping part matched with the positioning part.

2. The rotary transformer of claim 1, wherein the positioning member extends in a radial direction of the bobbin.

3. The rotary transformer of claim 1, wherein the cover comprises:

a protection part for covering an upper surface of the base;

the two fixing parts are oppositely arranged and positioned on the protection part, sliding parts matched with the guide part are arranged on the two fixing parts, and clamping parts matched with the positioning parts are arranged on the two fixing parts.

4. The rotary transformer of claim 3, wherein the cover further comprises:

the limiting part is arranged on the protection part and connected between the two fixing parts, and the limiting part is used for abutting against the upper surface of the base.

5. The resolver according to claim 4, wherein the sliding member is closer to the position-limiting portion than the retaining member, a gap is formed on the fixing portion, and the sliding member and the retaining member are respectively located at two sides of the gap.

6. The rotary transformer of claim 1, wherein the guide is a chute and the slide is a slide rail; or, the guide piece is a slide rail, and the sliding piece is a sliding chute; and the number of the first and second electrodes,

the positioning piece is a clamping groove, and the clamping piece is a clamping block; or, the positioning piece is a clamping block, and the clamping piece is a clamping groove.

7. The resolver according to claim 6, wherein the locking piece is provided with a guide slope for facilitating the locking into the locking groove.

8. The rotary transformer according to claim 1, wherein a coil is provided on the stator, a PIN is provided on the base, the coil is connected to one end of the PIN, and a lead is connected to the other end of the PIN.

9. The rotary transformer of claim 8, wherein the base is provided with an outlet slot, the lead wire passes through the outlet slot, and two opposite slot walls of the outlet slot are provided with aligned or staggered protrusions; and/or the presence of a gas in the gas,

one end of the PIN needle connected with the coil extends out of the upper surface of the base, and the upper surface of the base is coated with sealing glue for sealing the PIN needle.

10. The rotary transformer according to claim 8 or 9, wherein the base is provided with a mounting groove adapted to the PIN, and the PIN is inserted into the mounting groove; or the base and the PIN needle are fixed through insert injection molding.

Images