CN107941130B - Scale display device and zeroing adjustment mechanism thereof - Google Patents
Scale display device and zeroing adjustment mechanism thereof Download PDFInfo
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- CN107941130B CN107941130B CN201711425487.8A CN201711425487A CN107941130B CN 107941130 B CN107941130 B CN 107941130B CN 201711425487 A CN201711425487 A CN 201711425487A CN 107941130 B CN107941130 B CN 107941130B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 190
- 230000013011 mating Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 8
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
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Abstract
The invention discloses a scale display device and a zeroing adjustment mechanism thereof, wherein the zeroing adjustment mechanism comprises a power output shaft, an input shaft of the scale display device and a transmission piece, wherein the power output shaft is provided with a clamping part, one end of the transmission piece is provided with a buckling part, and the other end of the transmission piece is in transmission connection with the input shaft and can move back and forth along the axis direction of the input shaft; when the transmission piece is positioned at the first position, the clamping part is in limit fit with the buckling part, so that the power output shaft is in transmission connection with the transmission piece; when the transmission piece is in the second position, the clamping part and the buckling part are staggered, so that the power output shaft and the transmission piece can rotate independently. The scale display device can be mounted on the motor output shaft in advance by utilizing the zeroing adjusting mechanism without being limited by the base station antenna calibration step.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a scale display device and a zeroing adjustment mechanism thereof.
Background
At present, along with the increasing degree of product quality refinement and market demands, the internal electric tuning antenna also can display an electric downtilt angle like the external electric tuning antenna. The traditional zeroing adjustment technology can only be used for zeroing adjustment of the scale display device by using the zeroing adjustment device after the base station antenna is calibrated in place, and then the scale display device is assembled on the motor output shaft after zeroing is completed.
Disclosure of Invention
Accordingly, it is necessary to provide a scale display device and a zeroing adjustment mechanism thereof, which are not limited by the step of calibrating the base station antenna, and further can be mounted on the motor output shaft in advance.
The technical scheme is as follows:
the zeroing adjusting mechanism comprises a power output shaft, an input shaft of a scale display device and a transmission piece, wherein the power output shaft is detachably connected with one end of the transmission piece in a transmission way, and the other end of the transmission piece is connected with the input shaft in a transmission way; when the power output shaft is in transmission connection with one end of the transmission piece, the input shaft and the power output shaft coaxially rotate through the transmission piece; when the power output shaft is separated from one end of the transmission member, the power output shaft and the transmission member can rotate independently.
The use of the scale display device realizes that the scale display device is assembled in any position state of the base station antenna under the un-calibrated state; specifically, the scale display device is installed on the base station antenna through the zeroing adjusting structure and is used for displaying the angle change of the electric downtilt angle, wherein the power output shaft is fixedly connected with the motor in a transmission manner, and the input shaft is connected with the pointer of the dial in a transmission manner. After the base station antenna is calibrated in place, the power output shaft and one end of the transmission piece can be separated, the power output shaft and the transmission piece can respectively and independently rotate, and then the rotatable rotation piece drives the rotation of the input shaft to realize pointer zeroing, and the rotation of the power output shaft is not driven in the process, so that the calibration result of the base station antenna is not influenced; after zeroing, only one end of the transmission piece is in transmission connection with the power output shaft, the input shaft coaxially rotates with the power output shaft through the transmission piece, and further the rotation condition of the synchronous motor is real-time to obtain the angle change of the antenna downtilt angle.
The technical scheme is further described as follows:
in one embodiment, the power output shaft is provided with a clamping part, and one end of the transmission piece is provided with a buckling part; when the transmission piece is in the first position, the clamping part is in limit fit with the buckling part, so that the power output shaft is in transmission connection with the transmission piece; when the transmission piece is in the second position, the clamping part and the buckling part are staggered, so that the power output shaft and the transmission piece can rotate independently.
In one embodiment, the end of the power output shaft is provided with a matching hole, the matching hole comprises a sleeve hole and a first clamping hole which are arranged at intervals along the depth direction of the matching hole, the first clamping hole is the clamping part and is arranged close to the bottom of the matching hole, the buckling part is a first clamping body arranged at one end of the transmission piece, and when the transmission piece is in a first position, the first clamping body is in limit fit with the first clamping hole; when the transmission piece is in the second position, the first clamping body is staggered with the first clamping hole.
In one embodiment, the cross section of the first clamping hole is polygonal, and the cross section of the first clamping body is polygonal; or the first clamp Kong Weixian is provided with a tooth slot, and the first clamp body is a limiting rack matched with the limiting tooth slot.
In one embodiment, the clamping part is a clamping body, and the buckling part is a limiting hole in anti-rotation limiting fit with the clamping body.
In one embodiment, the transmission member is elastically resettable between the power output shaft and the input shaft; when the transmission member is in a natural state, the transmission member is in a first position.
In one embodiment, the input shaft is provided with a second clamping hole, the other end of the transmission member is provided with a second clamping body which is in limiting clamping with the second clamping hole, and the second clamping body can move back and forth along the depth direction of the second clamping hole.
In one embodiment, the power transmission device comprises a connecting shaft, one end of the connecting shaft is rotationally connected with the power output shaft, the other end of the connecting shaft is rotationally connected with the input shaft, the transmission piece is provided with a sleeved through hole, and the transmission piece is sleeved on the connecting shaft through the sleeved through hole and can move back and forth along the axis direction of the input shaft.
In one embodiment, the power output shaft is provided with a sleeve hole sleeved and matched with one end of the transmission piece, the side wall of the sleeve hole is provided with first connecting holes which are spaced along the same circumference, and the circumference side of the first end of the transmission piece is provided with a plurality of second connecting holes which are spaced along the same circumference; or one end of the transmission piece is provided with a sleeve hole which is sleeved and matched with the power output shaft, the side wall of the sleeve hole is provided with first connecting holes which are arranged along the same circumferential interval, and the circumferential side of the power output shaft is provided with a plurality of second connecting holes which are arranged along the same circumferential interval.
In one embodiment, a locking structure is arranged between the power output shaft and one end of the transmission piece, and when the locking structure is in a locking state, the power output shaft is in transmission connection with one end of the transmission piece; when the locking structure is in a release state, the power output shaft and one end of the transmission piece can respectively and independently rotate.
The technical scheme also provides a scale display device, which comprises the zeroing adjusting structure, a dial and a pointer rotatably arranged on the dial, wherein the pointer is in transmission connection with the input shaft.
And the scale display device can be arranged on the base station antenna through the zeroing adjusting structure and is used for displaying the angle of the electric downtilt angle, wherein the power output shaft is fixedly connected with the motor in a transmission way, and the input shaft is connected with the pointer of the dial in a transmission way. Before the calibration of the base station antenna is completed, when the power output shaft is separated from one end of the transmission piece, the power output shaft and the transmission piece can respectively and independently rotate, so that the calibration of the base station antenna can not drive the transmission piece to rotate, can not enable the pointer to rotate, and is in a zeroing state; after the base station antenna calibration is completed, the power output shaft is in transmission connection with one end of the transmission piece, the input shaft coaxially rotates with the power output shaft through the transmission piece, and then the rotation condition of the synchronous motor is synchronized in real time to obtain the angle change of the antenna downtilt angle.
Drawings
FIG. 1 is a schematic diagram of a scale display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the semi-cutaway section of FIG. 1;
FIG. 3 is an enlarged schematic view of the power take-off shaft of FIG. 2 in semi-section;
FIG. 4 is a schematic top view of the input shaft and the driving member of FIG. 1;
fig. 5 is a schematic structural view of a scale display device according to another embodiment (a schematic view of a state in which a clip portion and a buckle portion are staggered);
FIG. 6 is a schematic view illustrating a structure of the engaging portion and the fastening portion in FIG. 5 when the engaging portion is engaged with the fastening portion;
FIG. 7 is a schematic diagram of the driving member of FIG. 5;
fig. 8 is a schematic structural view of the input shaft in fig. 5.
Reference numerals illustrate:
10. 100 parts of zeroing adjusting mechanism, 100 parts of power output shaft, 110 parts of clamping part, 112 parts of matching hole, 102 parts of sleeve hole, 104 parts of first clamping hole, 114 parts of external gear, 200 parts of input shaft, 210 parts of second clamping hole, 220 parts of conductor, 224 parts of limiting groove, 300 parts of transmission piece, 310 parts of first clamping body, 320 parts of second clamping body, 330 parts of inner gear ring, 340 parts of guide groove hole, 350 parts of elastic clamping body, 352 parts of limiting protrusion, 400 parts of connecting shaft, 20 parts of dial, 30 parts of pointer.
Detailed Description
The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is considered to be "in driving connection with" another element, it can rotate synchronously with the other element, either directly or indirectly, or in a fixed connection that is not detachable, or in a detachable synchronous rotation connection that can slide in the same direction. The use of the terms "vertical," "horizontal," "left," "right," and similar expressions in conjunction with centering elements herein are for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
As shown in fig. 1, 2, 5 and 6, a scale display device according to an embodiment of the present invention includes:
the zeroing adjusting mechanism 10 comprises a power output shaft 100, an input shaft 200 of a scale display device and a transmission member 300, wherein the power output shaft 100 is detachably connected with one end of the transmission member 300 in a transmission manner, and the other end of the transmission member 300 is connected with the input shaft 200 in a transmission manner; when the power output shaft 100 is in transmission connection with one end of the transmission member 300, the input shaft 200 coaxially rotates with the power output shaft 100 through the transmission member 300; when the power output shaft 100 is separated from one end of the transmission member 300, the power output shaft 100 and the transmission member 300 can be separately rotated;
the scale display device also comprises a dial 20 and a pointer 30 rotatably arranged on the dial 20, wherein the pointer 30 is in transmission connection with the input shaft 200.
With the above-described zeroing adjustment mechanism 10, it is possible to realize the assembly of the scale display device in any one of the position states in the base station antenna non-calibrated state; specifically, the scale display device is installed on the base station antenna through the zeroing adjustment structure and is used for displaying the angle change of the electric downtilt angle, wherein the power output shaft 100 is fixedly connected with the motor in a transmission manner, and the input shaft 200 is in transmission connection with the pointer 30 of the dial 20. After the base station antenna is calibrated in place, the power output shaft 100 can be separated from one end of the transmission piece 300, the power output shaft 100 and the transmission piece 300 can respectively and independently rotate, and then the rotatable rotating piece drives the input shaft 200 to rotate so as to realize zero setting of the pointer 30, and the power output shaft 100 is not driven to rotate in the process, so that the calibration result of the base station antenna is not influenced; after the zeroing is completed, only one end of the transmission piece 300 is in transmission connection with the power output shaft 100, the input shaft 200 coaxially rotates with the power output shaft 100 through the transmission piece 300, and further the rotation condition of the synchronous motor is real-time to obtain the angle change of the antenna downtilt angle.
Of course, the pointer 30 can be in a zeroing state, and when the power output shaft 100 is separated from one end of the transmission member 300 before the calibration of the base station antenna is completed, the power output shaft 100 and the transmission member 300 can respectively and independently rotate, so that the calibration of the base station antenna can not drive the transmission member 300 to rotate, and the pointer 30 can not rotate and is in a zeroing state; after the base station antenna calibration is completed, only one end of the power output shaft 100 and one end of the transmission piece 300 are in transmission connection, the input shaft 200 coaxially rotates with the power output shaft 100 through the transmission piece 300, and further the rotation condition of the synchronous motor is real-time to obtain the angle change of the antenna downtilt angle.
The power output shaft 100 is detachably connected to one end of the transmission member 300 in a plurality of manners, such as magnetic attraction, electromagnetic attraction, and power-off separation, so as to realize electric separation type transmission connection between the power output shaft 100 and one end of the transmission member 300.
In addition, mechanical manual separation or transmission connection can be adopted. In one embodiment, the power output shaft 100 is provided with a sleeve hole 102 sleeved and matched with one end of the transmission member 300, the side wall of the sleeve hole 102 is provided with first connecting holes which are spaced along the same circumference, and the circumference of the first end of the transmission member 300 is provided with a plurality of second connecting holes which are spaced along the same circumference; or one end of the transmission member 300 is provided with a sleeve hole 102 in sleeve fit with the power output shaft 100, the side wall of the sleeve hole 102 is provided with first connecting holes which are spaced along the same circumference, and the circumference of the power output shaft 100 is provided with a plurality of second connecting holes which are spaced along the same circumference. Further, the fastening pieces such as bolts can be inserted into the first connecting hole and the second connecting hole to realize the transmission connection between the power output shaft 100 and one end of the transmission piece 300; when the power output shaft 100 and the transmission member 300 are separated, the power output shaft 100 and the transmission member 300 can be separated by only disassembling the fastener, and can be independently rotated without interference.
In another embodiment, a locking structure is provided between the power output shaft 100 and one end of the transmission member 300, and when the locking structure is in a locked state, the power output shaft 100 is in transmission connection with one end of the transmission member 300; when the locking structure is in a released state, the power output shaft 100 and one end of the transmission member 300 can be separately rotated; furthermore, a locking structure may be provided to realize the transmission connection or separation of the power output shaft 100 and the transmission member 300, and in particular, may be realized by using a hoop structure.
In yet another embodiment, as shown in fig. 1, 2, 5 and 6, the power output shaft 100 is provided with a clamping portion 110, one end of the transmission member 300 is provided with a buckling portion, and the other end of the transmission member 300 is in transmission connection with the input shaft 200 and can move back and forth along the axial direction of the input shaft 200; when the transmission member 300 is at the first position, the clamping portion 110 is in limit fit with the buckling portion, so that the power output shaft 100 is in transmission connection with the transmission member 300; when the transmission member 300 is at the second position, the clamping portion 110 is staggered from the buckling portion, so that the power output shaft 100 and the transmission member 300 can respectively and independently rotate; in the process of switching the transmission connection state or the separation state of the power output shaft 100 and one end of the transmission member 300 by using the clamping part 110 and the buckling part, the coaxial synchronous rotation of the power output shaft 100 and the transmission member 300 in the transmission connection state can be effectively ensured, the switching operation is convenient, and the angle synchronous display precision of the electric downtilt angle is not influenced.
On the basis of the above embodiment, as shown in fig. 2, the transmission member 300 is elastically resettable between the power output shaft 100 and the input shaft 200; when the transmission member 300 is in the natural state, the transmission member 300 is in the first position, and only when the transmission member is moved by the external force, the clamping portion 110 is separated from the buckle portion, so that the switching operation is convenient, and the transmission connection state is easy to automatically recover. As shown in fig. 2 to 4, further, the end of the power output shaft 100 is provided with a mating hole 112, the mating hole 112 includes a sleeve hole 102 and a first clamping hole 104 which are arranged at intervals along the depth direction, the first clamping hole 104 is a clamping part 110 and is arranged near the bottom of the mating hole 112, the buckling part is a first clamping body 310 arranged at one end of the transmission member 300, and when the transmission member 300 is in the first position, the first clamping body 310 is in limit fit with the first clamping hole 104; when the transmission member 300 is in the second position, the first clamping body 310 is staggered from the first clamping hole 104. Further, in a natural state, the first clamping hole 104 is automatically aligned and clamped with the first clamping body 310, so that the power output shaft 100 is in transmission connection with the transmission piece 300; when the two states need to be changed, the transmission member 300 only needs to move in the direction away from the first card hole 104 when force is applied, so that the first card body 310 and the first card hole 104 can be separated, and the operation is convenient. Further, the cross section of the first card hole 104 is polygonal, and the cross section of the first card body 310 is polygonal; or the first clamping hole 104 is a limiting tooth slot, and the first clamping body 310 is a limiting rack matched with the limiting tooth slot; and then can design according to actual regulation needs, satisfy user's multiple demand. Of course, the clamping portion 110 is a clamping body, the buckling portion is a limiting hole in a rotation stopping and limiting fit with the clamping body, and further the limiting hole structure can be arranged on the transmission member 300, and the clamping body structure is arranged on the power output shaft 100, which constitutes an equivalent scheme of the above embodiment.
On the basis of the above embodiment, as shown in fig. 2 and 4, the input shaft 200 is provided with a second clamping hole 210, the other end of the transmission member 300 is provided with a second clamping body 320 that is in limit clamping with the second clamping hole 210, and the second clamping body 320 can move back and forth along the depth direction of the second clamping hole 210; further, the second clamping hole 210 is in sliding fit with the second clamping body 320, so that the transmission member 300 can drive the input shaft 200 to synchronously rotate, and the transmission member 300 can move relative to the axis direction of the input shaft 200. The specific matching modes of the second clamping hole 210 and the second clamping body 320 are not limited to the one shown in the figure, but also include, for example, the matching of the polygonal hole and the polygonal body, the matching of the limiting tooth slot and the limiting tooth, and the like.
In another embodiment of switching between a transmission connection state and a separation state of the power output shaft 100 and one end of the transmission member 300 based on a fastening structure, as shown in fig. 5 to 8, the transmission member 300 is provided with a guide slot 340, the input shaft 200 is provided with a conductor 220 in a rotationally sliding fit with the guide slot 340, and the transmission member 300 is sleeved on the conductor 220 through the guide slot 340; further, the transmission member 300 can drive the input shaft 200 to rotate synchronously by utilizing the anti-rotation sliding fit of the guide slot 340 and the conductor 220, and the transmission member 300 can move relative to the axis direction of the input shaft 200. The specific matching mode of the guide slot hole 340 and the conductor 220 is not limited to the one shown in the figure, but also includes, for example, the matching of the polygonal hole and the polygonal body, the matching of the limit tooth slot and the limit tooth, etc.
Further, when the transmission member 300 is at the first position, a limiting structure for limiting the transmission member 300 to move along the axial direction of the input shaft 200 is arranged between the other end of the transmission member 300 and the conductor 220; further, when the power output shaft 100 transmits power by using the transmission member 300, the clamping part 110 is separated from the buckle part due to the fact that the transmission member 300 can move along the axial direction, so that inaccurate display of the angle of the electrical downtilt angle is prevented; the limiting structure can ensure that the transmission piece 300 is positioned at the first position, so that the limiting fit of the clamping part 110 and the buckling part is reliable. As shown in fig. 5 to 7, in this embodiment, the other end of the transmission member 300 is provided with an elastic clip, the conductor 220 is provided with a limiting portion, and the limiting portion and the elastic clip are in a limiting fit to form a limiting structure, so that the transmission member 300 is in the first position; and the three-dimensional elastic clip is matched with the limiting part to realize reliable transmission connection between the power output shaft 100 and the transmission piece 300. Further, the elastic clip comprises at least two elastic clips 350 arranged at intervals along the same circumference, the free end of the elastic clip 350 is provided with a limiting protrusion 352 protruding inwards, the limiting part is a limiting groove 224 concavely arranged on the conductor 220, and the limiting groove 224 is in limiting fit with the limiting protrusion 352; therefore, the separation or limit fit of the clamping part 110 and the buckling part can be realized by only moving the transmission piece 300, so that the operation is convenient and the implementation is easy. Of course, the limiting structure may be an elastic reset structure, so that when the transmission member 300 is in the natural state, the transmission member is in the first position, and only when the transmission member is moved by an external force, the clamping portion 110 is separated from the buckle portion.
Further, as shown in fig. 5, the clamping portion 110 is a limiting tooth disposed at an end of the power output shaft 100, and the buckling portion is a transmission tooth disposed at one end of the transmission member 300; when the transmission piece 300 is at the first position, the limiting teeth are in limiting fit with the transmission teeth, and the elastic clips are in limiting fit with the limiting parts; when the transmission member 300 is at the second position, the limiting teeth are separated from the transmission teeth; and then utilize spacing tooth and drive tooth's cooperation to make between power take off shaft 100 and the driving medium 300 spacing block more firm, can place to skid, make the two transmission connection more reliable, the angle display of downward inclination is more accurate, and just also be convenient for spacing tooth and drive tooth's separation simultaneously, make things convenient for operating personnel to operate. In this embodiment, the limiting teeth are external gears 114, and the driving teeth are annular gears 330 in limiting engagement with the internal gears; and further, the external gear 114 is meshed with the annular gear 330 to form a limiting force, so that the stress between the power output shaft 100 and the transmission member 300 is uniform. Of course, in other embodiments, the spacing teeth are annular gears 330 and the driving teeth are external gears 114 in spacing engagement with annular gears 330.
In any of the above embodiments, as shown in fig. 2 and 5, the zeroing adjustment mechanism 10 further includes a connecting shaft 400, one end of the connecting shaft 400 is rotationally connected with the power output shaft 100, the other end is rotationally connected with the input shaft 200, the transmission member 300 is provided with a sleeve through hole, and the transmission member 300 is sleeved on the connecting shaft 400 through the sleeve through hole and can move back and forth along the axial direction of the input shaft 200; and the transmission member 300 is sleeved on the connecting shaft 400, so that the transmission member 300 is prevented from being separated from a preset position in the process of moving the transmission member 300 back and forth, and the transmission member 300 is required to be frequently installed, and the zeroing efficiency is prevented from being influenced.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The zeroing adjustment mechanism of the scale display device is characterized by comprising a power output shaft, an input shaft of the scale display device and a transmission piece, wherein the power output shaft is detachably connected with one end of the transmission piece in a transmission way, and the other end of the transmission piece is connected with the input shaft in a transmission way;
when the power output shaft is in transmission connection with one end of the transmission piece, the input shaft and the power output shaft coaxially rotate through the transmission piece;
when the power output shaft is separated from one end of the transmission member, the power output shaft and the transmission member can rotate independently.
2. The return-to-zero adjustment mechanism according to claim 1, wherein the power output shaft is provided with a clamping portion, and one end of the transmission member is provided with a buckling portion; when the transmission piece is in the first position, the clamping part is in limit fit with the buckling part, so that the power output shaft is in transmission connection with the transmission piece; when the transmission piece is in the second position, the clamping part and the buckling part are staggered, so that the power output shaft and the transmission piece can rotate independently.
3. The zeroing adjustment mechanism according to claim 2, wherein the end portion of the power output shaft is provided with a mating hole, the mating hole comprises a sleeve hole and a first clamping hole which are arranged at intervals along the depth direction of the mating hole, the first clamping hole is the clamping portion and is arranged close to the bottom of the mating hole, the buckling portion is a first clamping body arranged at one end of the transmission member, and when the transmission member is in a first position, the first clamping body is in limit fit with the first clamping hole; when the transmission piece is in the second position, the first clamping body is staggered with the first clamping hole.
4. The return-to-zero adjustment mechanism of claim 3 wherein the first card aperture has a polygonal cross-section and the first card body has a polygonal cross-section; or the first clamp Kong Weixian is provided with a tooth slot, and the first clamp body is a limiting rack matched with the limiting tooth slot.
5. The return-to-zero adjustment mechanism of claim 2, wherein the clamping portion is a clamping body and the buckling portion is a limiting hole in limited-rotation limit fit with the clamping body.
6. The return-to-zero adjustment mechanism of any one of claims 2 to 5 wherein the transmission member is resiliently repositionable between the power output shaft and the input shaft; when the transmission member is in a natural state, the transmission member is in a first position.
7. The zeroing adjustment mechanism according to claim 6, wherein the input shaft is provided with a second clamping hole, the other end of the transmission member is provided with a second clamping body in limiting clamping engagement with the second clamping hole, and the second clamping body can move back and forth along the depth direction of the second clamping hole.
8. The return-to-zero adjustment mechanism according to claim 6, further comprising a connecting shaft, wherein one end of the connecting shaft is rotatably connected with the power output shaft, the other end of the connecting shaft is rotatably connected with the input shaft, the transmission member is provided with a sleeve through hole, and the transmission member is sleeved on the connecting shaft through the sleeve through hole and can move back and forth along the axial direction of the input shaft.
9. The zeroing adjustment mechanism according to claim 1, wherein the power output shaft is provided with a sleeve hole sleeved and matched with one end of the transmission member, the side wall of the sleeve hole is provided with first connecting holes which are spaced along the same circumference, and the circumference side of the first end of the transmission member is provided with a plurality of second connecting holes which are spaced along the same circumference;
or one end of the transmission piece is provided with a sleeve hole which is sleeved and matched with the power output shaft, the side wall of the sleeve hole is provided with first connecting holes which are arranged along the same circumferential interval, and the circumferential side of the power output shaft is provided with a plurality of second connecting holes which are arranged along the same circumferential interval.
10. A scale display device, characterized by comprising the zeroing adjustment mechanism according to any one of claims 1 to 9, a dial and a pointer rotatably arranged on the dial, the pointer being in transmission connection with the input shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425487.8A CN107941130B (en) | 2017-12-25 | 2017-12-25 | Scale display device and zeroing adjustment mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711425487.8A CN107941130B (en) | 2017-12-25 | 2017-12-25 | Scale display device and zeroing adjustment mechanism thereof |
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| CN107941130A CN107941130A (en) | 2018-04-20 |
| CN107941130B true CN107941130B (en) | 2023-10-27 |
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| CN110779429B (en) * | 2019-09-30 | 2021-06-08 | 安徽省儿童医院 | Hospital bed lifting angle measuring device convenient for reading |
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| US4809440A (en) * | 1988-02-11 | 1989-03-07 | Sunnen Products Company | In dial bore gages |
| US5639953A (en) * | 1996-02-26 | 1997-06-17 | Hanson Research Corporation | Alignment verification device for a rotating shaft |
| JP2000241101A (en) * | 1999-02-24 | 2000-09-08 | Chuo Motor Wheel Co Ltd | Dishing amount measuring apparatus for wheel fixing surface for automobile |
| CN207797969U (en) * | 2017-12-25 | 2018-08-31 | 京信通信系统（中国）有限公司 | Scale display device and its zero regulating mechanism |
-
2017
- 2017-12-25 CN CN201711425487.8A patent/CN107941130B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4809440A (en) * | 1988-02-11 | 1989-03-07 | Sunnen Products Company | In dial bore gages |
| US5639953A (en) * | 1996-02-26 | 1997-06-17 | Hanson Research Corporation | Alignment verification device for a rotating shaft |
| JP2000241101A (en) * | 1999-02-24 | 2000-09-08 | Chuo Motor Wheel Co Ltd | Dishing amount measuring apparatus for wheel fixing surface for automobile |
| CN207797969U (en) * | 2017-12-25 | 2018-08-31 | 京信通信系统（中国）有限公司 | Scale display device and its zero regulating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107941130A (en) | 2018-04-20 |
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